2018-09-14 Richard Biener <rguenther@suse.de>

[official-gcc.git] / gcc / ChangeLog

2018-09-14  Richard Biener  <rguenther@suse.de>

        PR middle-end/63155
        * tree-ssa-coalesce.c (ssa_conflicts_merge): Remove conflict
        bits for the merged partition.

2018-09-13  Martin Sebor  <msebor@redhat.com>
            Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * builtins.h (c_srlen): Add argument.
        * builtins.c (warn_string_no_nul): New function.
        (c_strlen): Add argument and use it.  Update recursive calls.
        Pass DECL argument to string_constant to get info on non
        terminated strings.  Update *NONSTR as needed.
        (fold_builtin_strlen): Add argument to calls to c_strlen.
        Warn for unterminated arrays.
        (warn_string_no_null): Add prototype.
        * expr.c (string_constant): Update arguments.  Update recursive
        calls appropriately.  Detect missing NUL terminator and outermost
        declaration its missing in.
        Improve checks for arrays with nonzero lower bound or elements
        that are not a single byte.  Simplify offset computation.
        Simplify checks for non-NUL terminated strings.
        * gimple-fold.c (get_range_strlen): Add argument to c_strlen call.
        * gimple-ssa-sprintf.c (get_string_length): Remove unnecessary code.

2018-09-13  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * builtins.c (c_strlen): Handle not zero terminated STRING_CSTs
        correctly.
        * fold-const.c (c_getstr): Fix function comment.  Remove unused third
        argument.  Fix range checks.
        * fold-const.h (c_getstr): Adjust protoype.
        * gimple-fold.c (gimple_fold_builtin_memory_op): Avoid folding when
        string is constant but contains no NUL byte.

        * expr.c (string_constant): Adjust function comment.
        Remove bogus check for zero termination.

        * fold-const.c (c_getstr): Clamp STRING_LENGTH to STRING_SIZE.

        * varasm.c (compare_constant): Compare type size of STRING_CSTs.
        (get_constant_size): Don't make STRING_CSTs larger than they are.
        (check_string_literal): New check function for STRING_CSTs.
        (output_constant): Use it.

2018-09-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/86812
        * config/visium/visium.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define.

2018-09-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87263
        * tree-ssa-sccvn.c (visit_phi): Revert some earlier changes.
        (struct unwind_state): Add max_rpo field.
        (do_rpo_vn): Allow up-to-date loop state to be used when not iterating.
        Compute max_rpo, the max RPO number a block can be backwards reached
        from.  Re-write non-iterating mode to a RPO ordered worklist approach,
        separating it from the iterating mode.

2018-09-13  Vlad Lazar  <vlad.lazar@arm.com>

        * haifa-sched.c (rank_for_schedule): Schedule by INSN_COST.
        (rfs_decision): New scheduling decision.

2018-09-13  Richard Biener  <rguenther@suse.de>

        PR bootstrap/87134
        * tree-ssa-sccvn.c (vn_nary_op_insert_into): Fix assert.
        (vn_nary_op_insert_pieces_predicated): Do not write useless
        valid_dominated_by_p entry outside of the allocated storage.

2018-09-13  Omar Sandoval  <osandov@osandov.com>
            Tom de Vries  <tdevries@suse.de>

        PR debug/86985
        * dwarf2out.c (is_c): New function.
        (add_subscript_info): Add DW_AT_count of 0 for C zero-length arrays.

2018-09-13  Sam Tebbs  <sam.tebbs@arm.com>

        PR target/85628
        * config/aarch64/aarch64.md (*aarch64_bfxil):
        Define.
        * config/aarch64/constraints.md (Ulc): Define.
        * config/aarch64/aarch64-protos.h (aarch64_high_bits_all_ones_p):
        Define.
        * config/aarch64/aarch64.c (aarch64_high_bits_all_ones_p):
        New function.

2018-09-13  Vlad Lazar  <vlad.lazar@arm.com>

        * config/aarch64/aarch64.h (TARGET_COMPUTE_FRAME_LAYOUT): Define.
        * config/aarch64/aarch64.c (aarch64_expand_prologue): Remove
        aarch64_layout_frame call. 
        (aarch64_expand_epilogue): Likewise.
        (aarch64_initial_elimination_offset): Likewise.
        (aarch64_get_separate_components): Likewise.
        (aarch64_use_return_insn_p): Likewise.
        (aarch64_layout_frame): Remove unneeded check.

2018-09-13  Jakub Jelinek  <jakub@redhat.com>

        * configure.ac: Only append
        " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" to
        gcc_config_arguments if it was never reconfigured or last reconfigure
        was with different arguments.
        * configure: Regenerated.

2018-09-13  Jakub Jelinek  <jakub@redhat.com>
            Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR middle-end/87290
        * expr.c (maybe_optimize_pow2p_mod_cmp): New function.
        (maybe_optimize_mod_cmp): Use it if integer_pow2p treeop1.

2018-09-13  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/87287
        * fold-const.c (fold_binary_loc) <case EQ_EXPR>: Move signed modulo
        X % C == 0 to X % (unsigned) C == 0 optimization to ...
        * match.pd (X % C == 0): ... here.  New optimization.

2018-09-12  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/82853
        * expr.h (maybe_optimize_mod_cmp): Declare.
        * expr.c (mod_inv): New function.
        (maybe_optimize_mod_cmp): New function.
        (do_store_flag): Use it.
        * cfgexpand.c (expand_gimple_cond): Likewise.

2018-09-09  Cesar Philippidis  <cesar@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>

        PR middle-end/86336
        * gimplify.c (gimplify_scan_omp_clauses): Set
        target_firstprivatize_array_bases in OpenACC parallel and kernels
        region contexts.  Remove GOMP_MAP_FIRSTPRIVATE_REFERENCE clauses from
        OpenACC data regions.

2018-09-12  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (sqrt_extend<mode>xf3_i387): Remove.
        (sqrt<mode>2): Extend operand 1 to XFmode and generate sqrtxf3 insn.

2018-09-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87280
        * tree-ssa-sccvn.c (process_bb): Handle the case of executable
        edge but unreachable target.
        (do_rpo_vn): For conservatively handling a PHI only mark
        the backedge executable but not the block reachable.

2018-09-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87266
        * tree-ssa-sccvn.c (do_rpo_vn): Always iterate to not yet
        visited blocks.

2018-09-12  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.md (PFPO_RND_MODE_DFP, PFPO_RND_MODE_BFP): New
        constants.
        ("trunc<BFP:mode><DFP_ALL:mode>2")
        ("trunc<DFP_ALL:mode><BFP:mode>2")
        ("extend<BFP:mode><DFP_ALL:mode>2")
        ("extend<DFP_ALL:mode><BFP:mode>2"): Set proper rounding mode
        according to the target operand type.

2018-09-12  Jakub Jelinek  <jakub@redhat.com>
            Andreas Krebbel  <krebbel@linux.ibm.com>

        PR tree-optimization/86844
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::coalesce_immediate): For overlapping stores, if
        there are any overlapping stores in between them, make sure they are
        also coalesced or we give up completely.

2018-09-12  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87248
        * fold-const.c (fold_ternary_loc) <case COND_EXPR>: Verify also that
        BIT_AND_EXPR's second operand is a power of two.  Formatting fix.

2018-09-12  Tom de Vries  <tdevries@suse.de>

        * common.opt (gdescribe-dies): Add option.
        * dwarf2out.c (add_name_and_src_coords_attributes): Add description
        attribute for artifical and nameless decls.
        (dwarf2out_register_external_die): Add description attribute to
        external reference die.
        (add_desc_attribute): New functions.
        (gen_subprogram_die): Add description attribute to
        DW_TAG_call_site_parameter.
        * tree-pretty-print.c (print_generic_expr_to_str): New function.
        * tree-pretty-print.h (print_generic_expr_to_str): Declare.
        * doc/invoke.texi (@item Debugging Options): Add -gdescribe-dies and
        -gno-describe-dies.
        (@item -gdescribe-dies): Add.

2018-09-12  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (vrp_shift_undefined_p): Remove.
        (extract_range_from_binary_expr_1: Call
        wide_int_range_shift_undefined_p instead of vrp_shift_undefined_p.
        * wide-int-range.h (wide_int_range_shift_undefined_p): Do not
        depend on sign.

2018-09-12  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-warn-alloca.c
        (alloca_type_and_limit::alloca_type_and_limit): Initialize limit
        field for ALLOCA_BOUND_*_LARGE.

2018-09-11  Nathan Sidwell  <nathan@acm.org>

        * gcc.c (load_specs, execute, run_attempt): Use %qs not '%s'.

2018-09-11  Uros Bizjak  <ubizjak@gmail.com>

        * reg-stack.c (subst_asm_stack_regs): Call replace_reg also
        for clobbers.  Remove obsolete comment.

2018-09-11  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (define_attr "type"): Remove mpxmov, mpxmk,
        mpxchk, mpxld and mpxst types.
        (define_attr length_immediate): Remove all processing of mpx types.
        (define_attr prefix_0f): Ditto.
        (define_attr memory): Ditto.

2018-09-11  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (fyl2x_extend<mode>xf3_i387): Remove.
        (log<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate logxf3 insn.
        (log10<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate log10xf3 insn.
        (log2<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate log2xf3 insn.
        (fyl2xp1_extend<mode>xf3_i387): Remove.
        (log1p<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate log1pxf3 insn.
        (fxtract_extend<mode>xf3_i387): Remove.
        (logb<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate logbxf3 insn.
        (ilogb<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate fxtractxf3_i387 insn.
        (significand<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate significandxf3 insn.

2018-09-11  Nathan Sidwell  <nathan@acm.org>

        * gcc.c (perror_with_name, pfatal_with_name): Delete.
        (load_specs): Use fatal_error.
        (DELETE_IF_ORDINARY, process_command): Use error.
        (execute, run_attempt): Use fatal_error.

2018-09-11  Andrew Stubbs  <ams@codesourcery.com>

        * diagnostic-core.h (sorry_at): New prototype.
        * diagnostic.c (sorry_at): New function.

2018-09-11  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (extract_range_from_binary_expr_1): Treat all divisions
        by zero as VR_UNDEFINED.

2018-09-10  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (<sincos>xf2): Rename from *<sincos>xf2_i387.
        (*<sincos>_extend<mode>xf2_i387): Remove insn pattern.
        (<sincos>mode2): New expander.
        (sincos_extend<mode>xf3_i387): Remove insn pattern.
        (sincos -> sin, cos splitters): Remove splitter patterns.
        (sincos<mode>3): Change operand 2 predicate to general_operand.
        Extend operand 2 to XFmode and generate sincosxf3 insn.
        (fptanxf4_i387): Change mode of operands 0 and 3 to SFmode.
        Change operand 3 predicate to const1_operand.
        (fptan_extend<mode>xf4_i387): Remove insn pattern.
        (tanxf2): Update operands in the call to fptanxf4_i387.
        (tan<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate tanxf3 insn.
        (atan2xf3): Rename from *fpatanxf3_i387.
        (fpatan_extend<mode>xf3_i387): Remove insn pattern.
        (atan2xf3): Remove expander.
        (atan2<mode<3):  Change operand 1 and 2 predicates to general_operand.
        Extend operands 1 and 2 to XFmode and generate atan2xf3 insn.
        (atan<mode>2): Change operand 1 predicate to general_operand.
        Extend operand 1 to XFmode and generate atanxf3 insn.

2018-09-10  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (x87/SSE constant load splitter): Use
        memory_operand instead of nonimmediate_operand for input operand
        predicate.

2018-09-09  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (float partial SSE register stall splitter): Move
        splitter near its instruction pattern.
        (float_extend partial SSE register stall splitter): Ditto.
        (float_truncate partial SSE register stall splitter): Ditto.

2018-09-09  Hans-Peter Nilsson  <hp@bitrange.com>

        PR target/86794
        * config/mmix/mmix.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Redefine
        to speculation_safe_value_not_needed.

        PR target/85666
        * config/mmix/mmix.c (mmix_assemble_integer): Handle byte-size
        non-CONST_INT rtx:es using assemble_integer_with_op ".byte".
        (MMIX_CFUN_NEEDS_SAVED_EH_RETURN_ADDRESS): Don't call
        leaf_function_p, instead use has_hard_reg_initial_val.

2018-09-09  Nathan Sidwell  <nathan@acm.org>

        * gcc.h (pfatal_with_name): Don't declare here.
        * gcc.c (pfatal_with_name): Make static.

2018-09-09  Xianmiao Qu  <xianmiao_qu@c-sky.com>

        * config/csky/csky.md (*cskyv2_adddi3, *cskyv2_subdi3): Add
        earlyclobber.

2018-09-08  John David Anglin  <danglin@gcc.gnu.org>

        PR rtl-optimization/85458
        * sel-sched.c (sel_target_adjust_priority): Allow backend adjust
        priority hook to reduce the priority of EXPR.

2018-09-07  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (float<SWI48x:mode><MODEF:mode>2) Enable
        DImode for x87 on 32bit targets.  Conditionally disable x87 modes
        with X87_ENABLE_FLOAT.  Remove preparation code.
        (*float<SWI48:mode><MODEF:mode>2): Rename from
        *float<SWI48:mode><MODEF:mode>2_mixed.  Handle x87, SSE and mixed
        math using "enabled" attribute.
        (*floatdi<MODEF:mode>2_i387): Rename from
        *float<SWI48x:mode><MODEF:mode>2_i387.  Handle only DImode and
        enable for 32bit targets only.
        (floatdi<X87MODEF:mode>2_i387_with_xmm pre-reload splitter): New
        splitter.
        (floatdi<X87MODEF:mode>2_i387_with_xmm): Use register_operand
        as operand 1 predicate.  Rewrite as define_insn_and_split.
        (floatdi<X87MODEF:mode>2_i387_with_xmm memory input splitter): Remove.

2018-09-06  Uros Bizjak  <ubizjak@gmail.com>

        * reg-stack.c (get_true_reg) <case FLOAT_TRUNCATE>: Reorder
        to fallthru to FLOAT case.

2018-09-06  Will Schmidt  <will_schmidt@vnet.ibm.com>

        PR target/86731
        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Update logic
        around folding of vec_sl to handle out of range shift values.

2018-09-06  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (fix_trunc<mode>_fisttp_i387_1): Remove.
        Update callers to gen_fix_trunc<mode>_i387_fisttp
        (fix_trunc<mode>_i387_fisttp): Change operand 0 predicate to
        nonimmediate_operand.
        (fix_trunc<mode>_i387_fisttp_with_temp): Remove insn pattern
        and corresponding splitters.
        (*fix_trunc<mode>_i387_1): Always expand with fix_trunc<mode>_i387.
        (fix_truncdi_i387): Change operand 0 predicate to nonimmediate_operand.
        (fix_truncdi_i387_with_temp): Remove insn pattern
        and corresponding splitters.
        (fix_trunc<mode>_i387): Change operand 0 predicate to
        nonimmediate_operand.
        (fix_trunc<mode>_i387_with_temp): Remove insn pattern
        and corresponding splitters.
        (*fistdi2_1): Remove.
        (fistdi2): Ditto.
        (fistdi2_with_temp): Remove insn pattern and corresponding splitters.
        (lrintxfdi2): Remove expander.  Reimplement as define_insn.
        (*fist<mode>2_1): Remove.
        (fist<mode>2): Ditto.
        (fist<mode>2_with_temp): Remove insn pattern and corresponding
        splitters.
        (lrintxf<mode>2): Remove expander.  Reimplement as define_insn.
        (*fist<mode>2_<rounding>_1): Always expand with fist<mode>2_<rounding>.
        (fistdi2_<rounding>): Change operand 0 predicate to
        nonimmediate_operand.
        (fistdi2_<rounding>_with_temp): Remove insn pattern
        and corresponding splitters.
        (fist<mode>2_<rounding>): Change operand 0 predicate to
        nonimmediate_operand.
        (fist<mode>2_<rounding>_with_temp): Remove insn pattern
        and corresponding splitters.

        (*fixuns_trunc<mode>si2_avx512f_zext): Depend on TARGET_SSE_MATH.

2018-09-06  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * varasm.c (output_constructor_regular_field): Check TYPE_SIZE_UNIT of
        the init value.

2018-09-06  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add support for
        early gimple folding of vec_splat().
        * tree-vect-generic.c: Remove static from tree_vec_extract() definition.
        * gimple-fold.h: Add an extern define for tree_vec_extract().

2018-09-06  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000.c (fold_mergehl_helper): Add types_compatible_p
        wrappers around TREE_TYPE comparisons.

2018-09-06  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/80080
        * config/s390/predicates.md: Add nonsym_memory_operand.
        * config/s390/s390.c (s390_legitimize_cs_operand): If operand
        contains a SYMBOL_REF, load it into an intermediate pseudo.
        (s390_emit_compare_and_swap): Legitimize operand.
        * config/s390/s390.md: Use the new nonsym_memory_operand
        with UNSPECV_CAS patterns.

2018-09-06  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/80080
        * config/s390/s390-passes.def: New file.
        * config/s390/s390-protos.h (class rtl_opt_pass): Add forward
        declaration.
        (make_pass_s390_early_mach): Add declaration.
        * config/s390/s390.c (make_pass_s390_early_mach):
        (s390_option_override): Remove dynamic registration.
        * config/s390/t-s390: Add s390-passes.def.

2018-09-06  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_decompose_constant_pool_ref):
        Remove UNSPEC_LTREL_BASE check.
        (annotate_constant_pool_refs): Likewise.
        (find_constant_pool_ref): Likewise.
        (find_ltrel_base): Removed.
        (replace_ltrel_base): Removed.
        (s390_mainpool_finish): Remove replace_ltrel_base call.
        (s390_chunkify_start): Remove pending LTREL_BASE logic.
        (s390_chunkify_finish): Remove replace_ltrel_base call.
        * config/s390/s390.md: Remove UNSPEC_LTREL_BASE.

2018-09-06  Hans-Peter Nilsson  <hp@axis.com>

        PR target/86779
        * config/cris/cris.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Redefine
        to speculation_safe_value_not_needed.

2018-09-05  Cesar Philippidis  <cesar@codesourcery.com>
            Bernd Schmidt  <bernds_cb1@t-online.de>

        * config/nvptx/nvptx-opts.h: New file.
        * config/nvptx/nvptx.c (nvptx_file_start): Print the correct .target.
        * config/nvptx/nvptx.h: Include "nvptx-opts.h".
        (ASM_SPEC): Define.
        (TARGET_SM35): New macro.
        * config/nvptx/nvptx.md (atomic_fetch_<logic><mode>): Enable with the
        correct predicate.
        * config/nvptx/nvptx.opt (ptx_isa, sm_30, sm_35): New enum and its
        values.
        (misa=): New option.
        * doc/invoke.texi (Nvidia PTX Options): Document -misa.

2018-09-05  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (truncdfsf2): Remove expander.
        (truncdfsf2_with_temp): Ditto.
        (truncxf<mode>2): Ditto.
        (*truncdfsf_fast_mixed): Remove insn pattern.
        (*truncdfsf_fast_i387): Ditto.
        (*truncdfsf_mixed): Ditto.
        (*truncdfsf_i387): Ditto.
        (*truncdfsf2_i387_1): Ditto.
        (*truncxfsf2_mixed): Ditto.
        (*truncxfdf2_mixed): Ditto.
        (*truncxf<mode>2_i387_noop): Ditto. Update callers
        to call gen_truncxf<mode>2 instead.
        (*truncxf<mode>2_i387): Remove.
        (reg->reg splitters): Remove splitter pattern.
        (reg->mem splitters): Ditto.

        (truncdfsf2): New insn pattern.
        (truncxf<mode>2): Ditto.

2018-09-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * tree-ssa-math-opts.c (is_mult_by): New function.
        (is_square_of): Use the above.
        (optimize_recip_sqrt): New function.
        (pass_cse_reciprocals::execute): Use the above.

2018-09-05  Richard Biener  <rguenther@suse.de>

        PR bootstrap/87134
        * tree-ssa-sccvn.c (rpo_elim::eliminate_push_avail): Make sure
        to zero-init the emplaced vec.

2018-09-05  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/87205
        * tree-switch-conversion.c (pass_lower_switch::execute):
        Group cases for switch statements.

2018-09-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87217
        * tree-ssa-sccvn.c (vuse_valueize): New.
        (vn_reference_lookup_pieces): Use it.
        (vn_reference_lookup): Likewise.

2018-09-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/87137
        * stor-layout.c (place_field): Scan forwards to check last
        bitfield when ms_bitfield_placement is in effect.

2018-09-05  Richard Biener  <rguenther@suse.de>

        PR bootstrap/87225
        * tree-vect-stmts.c (vectorizable_simd_clone_call): Fix bogus
        return.

2018-09-05  Siddhesh Poyarekar  <siddhesh@sourceware.org>
            Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

        * config/aarch64/falkor-tag-collision-avoidance.c: New file.
        * config.gcc (extra_objs): Build it.
        * config/aarch64/t-aarch64 (falkor-tag-collision-avoidance.o):
        Likewise.
        * config/aarch64/aarch64-passes.def
        (pass_tag_collision_avoidance): New pass.
        * config/aarch64/aarch64.c (qdf24xx_tunings): Add
        AARCH64_EXTRA_TUNE_RENAME_LOAD_REGS to tuning_flags.
        (aarch64_classify_address): Remove static qualifier.
        (aarch64_address_info, aarch64_address_type): Move to...
        * config/aarch64/aarch64-protos.h: ... here.
        (make_pass_tag_collision_avoidance): New function.
        * config/aarch64/aarch64-tuning-flags.def (rename_load_regs):
        New tuning flag.

2018-09-05  Martin Liska  <mliska@suse.cz>

        * doc/gcov.texi: Update documentation of humar
        readable mode.
        * gcov.c (format_count): Print one decimal place, it provides
        more fine number of situations like '1G' vs. '1.4G'.

2018-09-05  Martin Liska  <mliska@suse.cz>

        PR target/87164
        * config/rs6000/rs6000.opt: Mark the option as Deprecated.
        * optc-gen.awk: Allow 'Var' for Deprecated options in order
        to generate a MASK value.

2018-09-04  H.J. Lu  <hongjiu.lu@intel.com>

        PR debug/86593
        * dwarf2out.c (based_loc_descr): Allow hard frame pointer even
        if frame pointer isn't used.
        (compute_frame_pointer_to_fb_displacement): Likewise.

2018-09-04  Jakub Jelinek  <jakub@redhat.com>

        PR target/87198
        * common/config/i386/i386-common.c (OPTION_MASK_ISA_XSAVEOPT_SET,
        OPTION_MASK_ISA_XSAVES_SET, OPTION_MASK_ISA_XSAVEC_SET): Use
        OPTION_MASK_ISA_XSAVE_SET instead of OPTION_MASK_ISA_XSAVE.
        (OPTION_MASK_ISA_XSAVE_UNSET): Add OPTION_MASK_ISA_XSAVES_UNSET
        and OPTION_MASK_ISA_XSAVEC_UNSET.

2018-09-04  Max Filippov  <jcmvbkbc@gmail.com>

        * config/xtensa/xtensa.c (xtensa_expand_atomic): Reorder AND and
        XOR operations in NAND case.

2018-09-04  Aldy Hernandez  <aldyh@redhat.com>

        * wide-int-range.cc (wide_int_range_convert): New.
        * wide-int-range.h (wide_int_range_convert): New.
        * tree-vrp.c (extract_range_from_unary_expr): Abstract wide int
        code into wide_int_range_convert.
        (extract_range_into_wide_ints): Do not munge anti range constants
        into the entire domain.  Just return the range back.

2018-09-04  Martin Liska  <mliska@suse.cz>

        * genmatch.c (output_line_directive): Add new argument
        fnargs.
        (dt_simplify::gen_1): Encapsulate dump within __builtin_expect.

2018-09-04  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (Option Summary): Add whitespace.

        * doc/invoke.texi (Option Summary): Add -Waligned-new.

2018-09-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87211
        * tree-ssa-sccvn.c (visit_phi): When value-numbering to a
        backedge value we're supposed to treat as VARYING also number
        the PHI to VARYING in case it got a different value-number already.

2018-09-04  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (vrp_can_optimize_bit_op): Remove.
        (extract_range_from_binary_expr_1): Do not call
        vrp_can_optimize_bit_op.
        * wide-int-range.cc (wide_int_range_can_optimize_bit_op): Make
        static.
        (wide_int_range_get_mask_and_bounds): New.
        (wide_int_range_optimize_bit_op): New.
        (wide_int_range_bit_ior): Call wide_int_range_optimize_bit_op.
        (wide_int_range_bit_and): Same.
        * wide-int-range.h (wide_int_range_can_optimize_bit_op): Remove.
        (wide_int_range_optimize_bit_op): New.
        (wide_int_range_get_mask_and_bounds): New.

2018-09-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87176
        * tree-ssa-sccvn.c (visit_phi): Remove redundant allsame
        variable.  When value-numbering a virtual PHI node make sure
        to not value-number to the backedge value.

2018-09-04  Jonathan Wakely  <jwakely@redhat.com>

        * doc/extend.texi (Long Long, Hex Floats): Document support for
        long long and hex floats in more recent versions of ISO C++.

2018-09-03  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87177
        * tree-ssa-sccvn.c (vuse_ssa_val): Revert previous change, keep
        cleanup.

2018-09-03  Alexander Monakov  <amonakov@ispras.ru>

        * bb-reorder.c (edge_order): Convert to C-qsort-style
        tri-state comparator.
        (reorder_basic_blocks_simple): Change std::stable_sort to gcc_stablesort.

2018-09-03  Alexander Monakov  <amonakov@ispras.ru>

        * tree-loop-distribution.c (offset_cmp): Convert to C-qsort-style
        tri-state comparator.
        (fuse_memset_builtins): Change std::stable_sort to gcc_stablesort.

2018-09-03  Alexander Monakov  <amonakov@ispras.ru>

        * sort.cc (struct sort_ctx): New field 'nlim'.  Use it...
        (mergesort): ... here as maximum count for using netsort.
        (gcc_qsort): Set nlim to 3 if stable sort is requested.
        (gcc_stablesort): New.
        * system.h (gcc_stablesort): Declare.

2018-09-03  Alexander Monakov  <amonakov@ispras.ru>

        * sort.cc (gcc_qsort) [CHECKING_P]: Call qsort_chk.
        * system.h (qsort): Always redirect to gcc_qsort.  Update comment.
        * vec.c (qsort_chk): Do not call gcc_qsort.  Update comment.

2018-09-03  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (*mov<mode>_hardfloat32): Remove %U from the
        lxsdx and stxsdx alternatives.
        (*mov<mode>_hardfloat64): Ditto.
        * config/rs6000/vsx.md (*vsx_extract_<mode>_store): Ditto.

2018-09-03  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87200
        * tree-ssa-sccvn.c (vn_nary_build_or_lookup_1): Valueize a
        simplify result.

2018-09-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/87201
        * tree-switch-conversion.c (switch_decision_tree::balance_case_nodes):
        Fix parenthesis in an expression.

2018-09-03  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87197
        * tree-ssa-sccvn.c (vn_nary_build_or_lookup_1): Mark the new def
        visited.  CSE the VN_INFO hashtable lookup.

        PR tree-optimization/87169
        * tree-ssa-sccvn.c (do_rpo_vn): When marking loops for not
        iterating make sure there's no extra backedges from irreducible
        regions feeding the header.  Mark the destination block
        executable.

2018-09-03  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * common/common-target.def: Add TARGET_GET_VALID_OPTION_VALUES.
        * common/common-targhooks.c (default_get_valid_option_values):
        New function.
        * common/common-targhooks.h (default_get_valid_option_values):
        Likewise.
        * common/config/i386/i386-common.c: Move processor_target_table
        from i386.c.
        (ix86_get_valid_option_values): New function.
        (TARGET_GET_VALID_OPTION_VALUES): New macro.
        * config/i386/i386.c (struct ptt): Move to i386-common.c.
        (PTA_*): Move all defined masks into i386-common.c.
        (ix86_function_specific_restore): Use new processor_cost_table.
        * config/i386/i386.h (struct ptt): Moved from i386.c.
        (struct pta): Likewise.
        * doc/tm.texi: Document new TARGET_GET_VALID_OPTION_VALUES.
        * doc/tm.texi.in: Likewise.
        * opt-suggestions.c (option_proposer::suggest_option):
        Pass prefix to build_option_suggestions.
        (option_proposer::get_completions): Likewise.
        (option_proposer::build_option_suggestions): Use the new target
        hook.
        * opts.c (struct option_help_tuple): New struct.
        (print_filtered_help): Use the new target hook.

2018-09-03  Martin Liska  <mliska@suse.cz>

        PR middle-end/59521
        * predict.c (set_even_probabilities): Add likely_edges
        argument and handle cases where we have precisely one
        likely edge.
        (combine_predictions_for_bb): Catch also likely_edges.
        (tree_predict_by_opcode): Handle gswitch statements.
        * tree-cfg.h (find_case_label_for_value): New declaration.
        (find_taken_edge_switch_expr): Likewise.
        * tree-switch-conversion.c (switch_decision_tree::balance_case_nodes):
        Find pivot in decision tree based on probabily, not by number of
        nodes.

2018-09-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/standards.texi (Standards): Update Objective-C reference.

2018-09-01  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/install.texi (Prerequisites): Update link for MPC.

2018-09-01  Michael Matz  <matz@suse.de>

        PR tree-optimization/87074
        * gimple-loop-jam.c (unroll_jam_possible_p): Check loop exit
        PHIs for outer-loop uses.

2018-09-01  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/generic.texi (OpenMP): Adjust link to openmp.org.
        * doc/invoke.texi (C Dialect Options): Ditto.

2018-09-01  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/install.texi (Prerequisites): Adjust link mpfr.org.

2018-08-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87168
        * tree-ssa-sccvn.c (SSA_VAL): Add visited output parameter.
        (rpo_elim::eliminate_avail): When OP was not visited it must
        be available.

2018-08-31  David Malcolm  <dmalcolm@redhat.com>

        * tree-vrp.c (copy_value_range): Convert param "from" from
        "value_range *" to "const value_range *".
        (range_is_null): Likewise for param "vr".
        (range_int_cst_p): Likewise.
        (range_int_cst_singleton_p): Likewise.
        (symbolic_range_p): Likewise.
        (value_ranges_intersect_p): Likewise for both params.
        (value_range_nonnegative_p): Likewise for param "vr".
        (value_range_constant_singleton): Likewise.
        (vrp_set_zero_nonzero_bits): Likewise for param "ar".
        (extract_range_into_wide_ints): Likewise for param "vr".
        (extract_range_from_multiplicative_op): Likewise for params "vr0"
        and "vr1".
        (vrp_can_optimize_bit_op): Likewise.
        (extract_range_from_binary_expr_1): Likewise for params "vr0_" and
        "vr1_".
        (extract_range_from_unary_expr): Likewise.
        (debug_value_range): Likewise for param "vr".
        (value_range::dump): Add "const" qualifier.
        (vrp_prop::check_array_ref): Convert local "vr" from
        "value_range *" to "const value_range *".
        (vrp_prop::check_mem_ref): Likewise.
        (vrp_prop::visit_stmt): Likewise for local "old_vr".
        (vrp_intersect_ranges_1): Likewise for param "vr_1".
        (vrp_intersect_ranges): Likewise.
        (simplify_stmt_for_jump_threading): Likewise for local "vr".
        (vrp_prop::vrp_finalize): Likewise.
        * tree-vrp.h (value_range::dump): Add "const" qualifier.
        (vrp_intersect_ranges): Add "const" qualifier to params as above.
        (extract_range_from_unary_expr): Likewise.
        (value_range_constant_singleton): Likewise.
        (symbolic_range_p): Likewise.
        (copy_value_range): Likewise.
        (extract_range_from_binary_expr_1): Likewise.
        (range_int_cst_p): Likewise.
        (vrp_set_zero_nonzero_bits): Likewise.
        (range_int_cst_singleton_p): Likewise.

2018-08-31  Vlad Lazar  <vlad.lazar@arm.com>

        * config/aarch64/arm_neon.h (vabsd_s64): New.
        (vnegd_s64): Likewise.

2018-08-31  Martin Jambor  <mjambor@suse.cz>

        * ipa-cp.c (estimate_local_effects): Replace wrong MAX with MIN.

2018-08-31  Martin Liska  <mliska@suse.cz>

        * ipa-icf.c (sem_item::add_type): Use
        sem_item::m_type_hash_cache.
        * ipa-icf.h: Move the cache from sem_item_optimizer
        to sem_item.

2018-08-31  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Backwards Compatibility): Remove implicit
        extern C leeway of () being (...).

2018-08-31  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * ipa-inline.c (can_inline_edge_by_limits_p): Fix typos in comment.

2018-08-31  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86684
        PR target/87149
        * config/rs6000/rs6000.md (lround<mode>di2): Gate on TARGET_FPRND.

2018-08-31  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87138
        * expmed.c (expand_mult_const): Use immed_wide_int_const instead of
        gen_int_mode.  Formatting fixes.

2018-08-30  Sandra Loosemore  <sandra@codesourcery.com>

        * target.def (custom_function_descriptors): Improve documentation.
        * doc/tm.texi.in (Trampolines): Expand discussion of function
        descriptors and move TARGET_CUSTOM_FUNCTION_DESCRIPTORS to the
        beginning of the section.
        * doc/tm.texi: Regenerated.

2018-08-30  Jose E. Marchesi  <jose.marchesi@oracle.com>

        * cfg.h (class auto_edge_flag): Spell out the template-id of the
        base class in the initializer list.  This is a workaround for
        building with older GCC.
        (class auto_bb_flag): Likewise.

2018-08-30  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/altivec.md (altivec_eq<mode>): Remove star.
        (altivec_vcmpequ<VI_char>_p): Remove star.
        * config/rs6000/rs6000-string.c (do_load_for_compare): Support
        vector load modes.
        (expand_strncmp_vec_sequence): New function.
        (emit_final_str_compare_vec): New function.
        (expand_strn_compare): Add support for vector strncmp.
        * config/rs6000/rs6000.opt (-mstring-compare-inline-limit): Change
        length specification to bytes.
        * config/rs6000/vsx.md (vsx_ld_elemrev_v16qi_internal): Remove star.
        (vcmpnezb_p): New pattern.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Update documentation
        for option -mstring-compare-inline-limit.

2018-08-30  Thiago Macieira  <thiago.macieira@intel.com>

        * config/i386/i386.c (PTA_WESTMERE): Remove PTA_AES.
        (PTA_SKYLAKE): Add PTA_AES.
        (PTA_GOLDMONT): Likewise.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        PR lto/86517
        * lto-opts.c (lto_write_options): Always stream PIC/PIE mode.
        * lto-wrapper.c (merge_and_complain): Fix merging of PIC/PIE.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Do not follow
        TYPE_STUB_DECL.
        (hash_tree): Do not visit TYPE_STUB_DECL.
        * tree-streamer-out.c (write_ts_type_common_tree_pointers): Do not
        stream TYPE_STUB_DECL.
        * tree-streamer-in.c (lto_input_ts_type_common_tree_pointers): Likewise.
        * ipa-utils.h (type_with_linkage_p): Do not rely on TYPE_STUB_DECL
        after free_lang_data.
        (type_in_anonymous_namespace_p): Likewise.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * sreal.h (SREAL_PART_BITS): Change to 31; remove seemingly unnecessary
        comment that it has to be even number.
        (class sreal): Change m_sig type to int32_t.
        * sreal.c (sreal::dump, sreal::to_int, opreator+, operator-): Use
        int64_t for temporary calculations.
        (sreal_verify_basics): Drop one bit from minimum and maximum.

2018-08-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87147
        * tree-ssa-sccvn.c (SSA_VISITED): New function.
        (visit_phi): When the degenerate result is from the backedge and
        we didn't visit its definition yet drop to VARYING.
        (do_rpo_vn): Properly mark blocks with incoming backedges as executable.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Do not walk
        DECL_VINDEX.
        (hash_tree): Likewise.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * tree.c (find_decls_types_r): Walk also TYPE_NEXT_PTR_TO
        and TYPE_NEXT_REF_TO.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * sreal.h (SREAL_PART_BITS): Change to 31; remove seemingly unnecessary
        comment that it has to be even number.
        (class sreal): Change m_sig type to int32_t.
        * sreal.c (sreal::dump, sreal::to_int, opreator+, operator-): Use
        int64_t for temporary calculations.
        (sreal_verify_basics): Drop one bit from minimum and maximum.

2018-08-30  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64.c (aarch64_expand_movmem): Set TImode max.

2018-08-30  Vlad Lazar  <vlad.lazar@arm.com>

        PR middle-end/86995
        * expmed.c (canonicalize_comparison): Use wi::sub instead of wi::add
        if to_add is negative.

2018-08-29  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/87053
        * builtins.c (c_strlen): Improve range checks.

2018-08-29  Martin Sebor  <msebor@redhat.com>
            Jeff Law  <law@redhat.com>

        PR tree-optimization/86714
        PR tree-optimization/86711
        * builtins.c (c_strlen): Add arguments to call to string_constant.
        * expr.c (string_constant): Add argument.  Detect missing nul
        terminator and outermost declaration it's missing in.
        * expr.h (string_constant): Add argument.
        * fold-const.c (read_from_constant_string): Add arguments to call to
        string_constant.
        (c_getstr): Likewise.
        * tree-ssa-forwprop.c (simplify_builtin_call): Likewise.
        to string_constant.
        * tree-ssa-strlen.c (get_stridx): Likewise.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * tree-streamer-in.c (lto_input_ts_function_decl_tree_pointers):
        Do not stream DECL_VINDEX.
        * tree-streamer-out.c (write_ts_function_decl_tree_pointers): Likewise.
        * tree.c (free_lang_data_in_decl): Clear DECL_VINDEX.
        (decl_function_context): Use DECL_VIRTUAL_P rather than DECL_VINDEX.

2018-08-29  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vuse_ssa_val): Return NULL for unvisited
        virtual operands that are not default defs to honor region
        boundaries.
        (rpo_vn_valueize): Remove ineffective code here.

2018-08-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87132
        * tree-ssa-alias.c (get_continuation_for_phi): Do not translate
        when skipping defs reachable over backedges.

2018-08-29  Richard Biener  <rguenther@suse.de>

        * tree-core.h: Document use of deprecated_flag in SSA_NAME.
        * tree.h (SSA_NAME_POINTS_TO_READONLY_MEMORY): Define.
        * tree-into-ssa.c (pass_build_ssa::execute): Initialize
        function parameters SSA_NAME_POINTS_TO_READONLY_MEMORY from fnspec.
        * tree-ssa-sccvn.c (const_parms, init_const_parms): Remove.
        (vn_reference_lookup_3): Remove use of const_parms.
        (free_rpo_vn): Do not free const_parms.
        (do_rpo_vn): Do not call init_const_parms.
        * tree-ssa-alias.c (refs_may_alias_p_1): Honor
        SSA_NAME_POINTS_TO_READONLY_MEMORY.
        (call_may_clobber_ref_p_1): Likewise.

2018-08-29  Alexander Monakov  <amonakov@ispras.ru>

        PR other/86726
        * invoke.texi (Optimization Options): List -ftree-scev-cprop.
        (-O): Ditto.
        (-ftree-scev-cprop): Document.

2018-08-29  Jan Hubicka  <jh@suse.cz>

        * sreal.h (normalize, normalize_up, normalize_down): Add new_sig/new_exp
        parameters.
        (sreal constructor): Update.
        * sreal.c (sreal:operator+, sreal:operator-, sreal:operator*,
        sreal:operator/): Update.

2018-08-29  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (switch_conversion::expand):
        Strenghten assumption about gswitch statements.

2018-08-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87117
        * tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_stmt): Only
        re-value-number released SSA VDEFs.

2018-08-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87126
        * tree-ssa-sccvn.c (vn_reference_insert): Remove assert.

2018-08-28  Jim Wilson  <jimw@sifive.com>

        * config/riscv/pic.md: Rewrite.
        * config/riscv/riscv.c (riscv_address_insns): Return cost of 3 for
        invalid address.
        * config/riscv/riscv.md (ZERO_EXTEND_LOAD): Delete.
        (SOFTF, default_load, softload, softstore): New.

2018-08-28  Jeff Law  <law@redhat.com>

        * fold-const.c (fold_binary_loc): Remove recently added assert.

2018-08-28  Joern Rennecke  <joern.rennecke@riscy-ip.com>

        * genpreds.c (write_predicate_subfunction): Also add ATTRIBUTE_UNUSED
        to OP parmeter of generated function.

2018-08-28  MCC CS  <deswurstes@users.noreply.github.com>

        PR tree-optimization/87009
        * match.pd: Add boolean optimizations.

2018-08-28  Martin Sebor  <msebor@redhat.com>

        PR middle-end/86631
        * calls.c (alloc_max_size): Treat HOST_WIDE_INT special.
        * gimple-ssa-warn-alloca.c (adjusted_warn_limit): New function.
        (pass_walloca::gate): Use it.
        (alloca_call_type): Same.
        (pass_walloca::execute): Same.
        * stor-layout.c (layout_decl): Treat HOST_WIDE_INT special.

2018-08-28  David Malcolm  <dmalcolm@redhat.com>

        * dumpfile.h (ATTRIBUTE_GCC_DUMP_PRINTF): Change version check on
        GCC_VERSION for usage of "__gcc_dump_printf__" format from
        >= 3005 to >= 9000.

2018-08-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87124
        * tree-ssa-sccvn.c (vn_lookup_simplify_result): Guard against
        constants before looking up avail.

2018-08-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87099
        * calls.c (maybe_warn_nonstring_arg): Punt early if
        warn_stringop_overflow is zero.  Don't call get_range_strlen
        on 3rd argument, keep iterating until lenrng[1] is INTEGER_CST.
        Swap comparison operands to have constants on rhs.  Only use
        lenrng[1] if non-NULL and INTEGER_CST.  Don't uselessly
        increment lenrng[0].

2018-08-28  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-ssa-sccvn.c (fully_constant_vn_reference_p): Fix unguarded
        use of tree_to_shwi.  Remove duplicated test for the size being
        a whole number of bytes.

2018-08-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87117
        * tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup):
        Handle removed stmt without LHS (GIMPLE_NOP).

2018-08-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87117
        * tree-ssa-sccvn.c (fully_constant_vn_reference_p): Exclude
        void which is is_gimple_reg_type by checking for COMPLETE_TYPE_P.

2018-08-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87117
        * tree-ssa-pre.c (compute_avail): Do not make expressions
        with predicated values available.
        (get_expr_value_id): Assert we do not run into predicated value
        expressions.

2018-08-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87117
        * tree-ssa-operands.c (add_stmt_operand): STRING_CST may
        get virtual operands.
        (get_expr_operands): Handle STRING_CST like other decls.

2018-08-28  Martin Liska  <mliska@suse.cz>

        * tree.h: Update documentation of fndecl_built_in_p
        functions.


2018-08-27  Jeff Law  <law@redhat.com>
        PR tree-optimization/87110
        * tree-ssa-dse.c (compute_trims): Handle non-constant
        TYPE_SIZE_UNIT.

2018-08-27  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86914
        * tree-ssa-strlen.c (maybe_set_strlen_range): Avoid MEM_REF.

2018-08-27  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/87112
        * builtins.c (expand_builtin_strnlen): Convert c_strlen result to
        the type of the bound argument.

2018-08-27  Jeff Law  <law@redhat.com>

        * tree-ssa-dse.c (compute_trims): Handle case where the reference's
        type does not have a TYPE_SIZE_UNIT.

2018-08-27  Steve Ellcey  <sellcey@cavium.com>

        * config/aarch64/aarch64-speculation.cc: Replace include of cfg.h
        with include of backend.h.

2018-08-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86927
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Properly
        use const cond reduction code.

2018-08-27  Alexander Monakov  <amonakov@ispras.ru>

        PR tree-optimization/85758
        * match.pd ((X & Y) ^ Y): Add :s qualifier to inner expression.

2018-08-27  David Malcolm  <dmalcolm@redhat.com>

        PR c++/87091
        * diagnostic-show-locus.c (class layout_range): Update for
        conversion of show_caret_p to a tri-state.
        (layout_range::layout_range): Likewise.
        (make_range): Likewise.
        (layout::maybe_add_location_range): Likewise.
        (layout::should_print_annotation_line_p): Don't show annotation
        lines for ranges that are SHOW_LINES_WITHOUT_RANGE.
        (layout::get_state_at_point): Update for conversion of
        show_caret_p to a tri-state.  Bail out early for
        SHOW_LINES_WITHOUT_RANGE, so that such ranges don't affect
        underlining or source colorization.
        (gcc_rich_location::add_location_if_nearby): Update for conversion
        of show_caret_p to a tri-state.
        (selftest::test_one_liner_multiple_carets_and_ranges): Likewise.
        (selftest::test_one_liner_fixit_replace_equal_secondary_range):
        Likewise.
        (selftest::test_one_liner_labels): Likewise.
        * gcc-rich-location.c (gcc_rich_location::add_expr): Update for
        conversion of show_caret_p to a tri-state.
        * pretty-print.c (text_info::set_location): Likewise.
        * pretty-print.h (text_info::set_location): Likewise.
        * substring-locations.c (format_warning_n_va): Likewise.
        * tree-diagnostic.c (default_tree_printer): Likewise.
        * tree-pretty-print.c (newline_and_indent): Likewise.

2018-08-27  David Malcolm  <dmalcolm@redhat.com>

        PR c++/87091
        * diagnostic-show-locus.c (get_line_span_for_fixit_hint): Show the
        line above for line-insertion fix-it hints.
        (selftest::test_fixit_insert_containing_newline): Update the
        expected results, and add a test with line-numbering enabled.

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR sanitizer/86962
        * sanopt.c (sanitize_rewrite_addressable_params): Ignore
        params with DECL_HAS_VALUE_EXPR_P.

2018-08-27  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.c (ix86_expand_set_or_movmem): Dump
        selected expansion strategy.

2018-08-27  Martin Liska  <mliska@suse.cz>

        * builtins.h (is_builtin_fn): Remove and fndecl_built_in_p.
        * builtins.c (is_builtin_fn): Likewise.
        * attribs.c (diag_attr_exclusions): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
        (builtin_mathfn_code): Likewise.
        (fold_builtin_expect): Likewise.
        (fold_call_expr): Likewise.
        (fold_builtin_call_array): Likewise.
        (fold_call_stmt): Likewise.
        (set_builtin_user_assembler_name): Likewise.
        (is_simple_builtin): Likewise.
        * calls.c (gimple_alloca_call_p): Likewise.
        (maybe_warn_nonstring_arg): Likewise.
        * cfgexpand.c (expand_call_stmt): Likewise.
        * cgraph.c (cgraph_update_edges_for_call_stmt_node): Likewise.
        (cgraph_edge::verify_corresponds_to_fndecl): Likewise.
        (cgraph_node::verify_node): Likewise.
        * cgraphclones.c (build_function_decl_skip_args): Likewise.
        (cgraph_node::create_clone): Likewise.
        * config/arm/arm.c (arm_insert_attributes): Likewise.
        * config/i386/i386.c (ix86_gimple_fold_builtin): Likewise.
        * dse.c (scan_insn): Likewise.
        * expr.c (expand_expr_real_1): Likewise.
        * fold-const.c (operand_equal_p): Likewise.
        (fold_binary_loc): Likewise.
        * gimple-fold.c (gimple_fold_stmt_to_constant_1): Likewise.
        * gimple-low.c (lower_stmt): Likewise.
        * gimple-pretty-print.c (dump_gimple_call): Likewise.
        * gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call): Likewise.
        * gimple.c (gimple_build_call_from_tree): Likewise.
        (gimple_call_builtin_p): Likewise.
        (gimple_call_combined_fn): Likewise.
        * gimplify.c (gimplify_call_expr): Likewise.
        (gimple_boolify): Likewise.
        (gimplify_modify_expr): Likewise.
        (gimplify_addr_expr): Likewise.
        * hsa-gen.c (gen_hsa_insns_for_call): Likewise.
        * ipa-cp.c (determine_versionability): Likewise.
        * ipa-fnsummary.c (compute_fn_summary): Likewise.
        * ipa-param-manipulation.c (ipa_modify_formal_parameters): Likewise.
        * ipa-split.c (visit_bb): Likewise.
        (split_function): Likewise.
        * ipa-visibility.c (cgraph_externally_visible_p): Likewise.
        * lto-cgraph.c (input_node): Likewise.
        * lto-streamer-out.c (write_symbol): Likewise.
        * omp-low.c (setjmp_or_longjmp_p): Likewise.
        (lower_omp_1): Likewise.
        * predict.c (strip_predict_hints): Likewise.
        * print-tree.c (print_node): Likewise.
        * symtab.c (symtab_node::output_to_lto_symbol_table_p): Likewise.
        * trans-mem.c (is_tm_irrevocable): Likewise.
        (is_tm_load): Likewise.
        (is_tm_simple_load): Likewise.
        (is_tm_store): Likewise.
        (is_tm_simple_store): Likewise.
        (is_tm_abort): Likewise.
        (tm_region_init_1): Likewise.
        * tree-call-cdce.c (gen_shrink_wrap_conditions): Likewise.
        * tree-cfg.c (verify_gimple_call): Likewise.
        (move_stmt_r): Likewise.
        (stmt_can_terminate_bb_p): Likewise.
        * tree-eh.c (lower_eh_constructs_2): Likewise.
        * tree-if-conv.c (if_convertible_stmt_p): Likewise.
        * tree-inline.c (remap_gimple_stmt): Likewise.
        (copy_bb): Likewise.
        (estimate_num_insns): Likewise.
        (fold_marked_statements): Likewise.
        * tree-sra.c (scan_function): Likewise.
        * tree-ssa-ccp.c (surely_varying_stmt_p): Likewise.
        (optimize_stack_restore): Likewise.
        (pass_fold_builtins::execute): Likewise.
        * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Likewise.
        (mark_all_reaching_defs_necessary_1): Likewise.
        * tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Likewise.
        * tree-ssa-forwprop.c (simplify_builtin_call): Likewise.
        (pass_forwprop::execute): Likewise.
        * tree-ssa-loop-im.c (stmt_cost): Likewise.
        * tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
        * tree-ssa-sccvn.c (fully_constant_vn_reference_p): Likewise.
        * tree-ssa-strlen.c (get_string_length): Likewise.
        * tree-ssa-structalias.c (handle_lhs_call): Likewise.
        (find_func_aliases_for_call): Likewise.
        * tree-ssa-ter.c (find_replaceable_in_bb): Likewise.
        * tree-stdarg.c (optimize_va_list_gpr_fpr_size): Likewise.
        * tree-tailcall.c (find_tail_calls): Likewise.
        * tree.c (need_assembler_name_p): Likewise.
        (free_lang_data_in_decl): Likewise.
        (get_call_combined_fn): Likewise.
        * ubsan.c (is_ubsan_builtin_p): Likewise.
        * varasm.c (incorporeal_function_p): Likewise.
        * tree.h (DECL_BUILT_IN): Remove and replace with
        fndecl_built_in_p.
        (DECL_BUILT_IN_P): Transfort to fndecl_built_in_p.
        (fndecl_built_in_p): New.

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86847
        * tree-switch-conversion.c (switch_decision_tree::dump_case_nodes):
        Dump also subtree probability.
        (switch_decision_tree::do_jump_if_equal): New function.
        (switch_decision_tree::emit_case_nodes): Handle special
        situations in balanced tree that can be emitted much simpler.
        Fix calculation of probabilities that happen in tree expansion.
        * tree-switch-conversion.h (struct cluster): Add
        is_single_value_p.
        (struct simple_cluster): Likewise.
        (struct case_tree_node): Add new function has_child.
        (do_jump_if_equal): New.

2018-08-27  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (bit_test_cluster::find_bit_tests):
        Add new argument to bit_test_cluster constructor.
        (bit_test_cluster::emit): Set bits really number of values
        handlel by a test.
        (bit_test_cluster::hoist_edge_and_branch_if_true): Add
        probability argument.
        * tree-switch-conversion.h (struct bit_test_cluster):
        Add m_handles_entire_switch.

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86702
        * tree-switch-conversion.c (jump_table_cluster::emit):
        Make probabilities even for values in jump table
        according to number of cases handled.
        (switch_decision_tree::compute_cases_per_edge): Pass
        argument to reset_out_edges_aux function.
        (switch_decision_tree::analyze_switch_statement): Likewise.
        * tree-switch-conversion.h (switch_decision_tree::reset_out_edges_aux):
        Make it static.

2018-08-27  Martin Liska  <mliska@suse.cz>

        * cfgexpand.c (expand_asm_stmt): Use label_to_block and pass
        cfun argument explicitly.
        * gimple-pretty-print.c (dump_gimple_switch): Likewise.
        * hsa-gen.c (gen_hsa_insns_for_switch_stmt): Use new
        function gimple_switch_default_bb.
        (convert_switch_statements):
        (expand_builtins):
        * ipa-fnsummary.c (set_switch_stmt_execution_predicate):
        * stmt.c (label_to_block_fn): Use label_to_block and pass
        cfun argument explicitly and use gimple_switch_label_bb.
        (expand_case): Likewise.
        * tree-cfg.c (lower_phi_internal_fn): Use label_to_block and pass
        cfun argument explicitly. Likewise.
        (make_edges_bb): Likewise.
        (make_cond_expr_edges): Likewise.
        (get_cases_for_edge): Likewise.
        (make_gimple_switch_edges): Likewise.
        (label_to_block_fn): Likewise.
        (label_to_block): Likewise.
        (make_goto_expr_edges): Likewise.
        (make_gimple_asm_edges): Likewise.
        (main_block_label): Likewise.
        (group_case_labels_stmt): Likewise.
        (find_taken_edge_computed_goto): Likewise.
        (find_taken_edge_switch_expr): Likewise.
        (gimple_verify_flow_info): Likewise.
        (gimple_redirect_edge_and_branch): Likewise.
        (gimple_switch_label_bb): New function.
        (gimple_switch_default_bb): Likewise.
        (gimple_switch_edge): Likewise.
        (gimple_switch_default_edge): Likewise.
        * tree-cfg.h (label_to_block_fn): Remove and replace ...
        (label_to_block): ... with this.
        (gimple_switch_label_bb): New.
        (gimple_switch_default_bb): Likewise.
        (gimple_switch_edge): Likewise.
        (gimple_switch_default_edge): Likewise.
        * tree-cfgcleanup.c (convert_single_case_switch): Use
        new gimple functions and pass new argument to label_to_block.
        (cleanup_control_flow_bb):
        * tree-eh.c (make_eh_dispatch_edges): Use label_to_block and pass
        cfun argument explicitly.
        (make_eh_edges): Likewise.
        (redirect_eh_dispatch_edge): Likewise.
        (lower_resx): Likewise.
        (lower_eh_dispatch): Likewise.
        (maybe_remove_unreachable_handlers): Likewise.
        (unsplit_eh): Likewise.
        (cleanup_empty_eh): Likewise.
        (verify_eh_edges): Likewise.
        (verify_eh_dispatch_edge): Likewise.
        * tree-ssa-dom.c (record_edge_info): Likewise.
        * tree-ssa-forwprop.c (simplify_gimple_switch_label_vec): Likewise.
        * tree-ssa-threadedge.c (thread_around_empty_blocks): Likewise.
        (thread_through_normal_block): Likewise.
        * tree-ssa-uncprop.c (associate_equivalences_with_edges): Likewise.
        * tree-ssa-uninit.c (convert_control_dep_chain_into_preds):
        * tree-switch-conversion.c (switch_conversion::collect): Use new
        gimple functions.
        (switch_conversion::check_final_bb): Likewise.
        (switch_conversion::gather_default_values): Pass new argument
        to label_to_block.
        (switch_conversion::build_constructors): Likewise.
        (switch_decision_tree::compute_cases_per_edge): Use new
        gimple_switch_edge function.
        (switch_decision_tree::analyze_switch_statement): Pass new argument
        to label_to_block.
        (switch_decision_tree::try_switch_expansion): Use
        gimple_switch_default_edge.
        * tree-vrp.c (find_switch_asserts): Pass new argument
        to label_to_block.
        * vr-values.c (vr_values::vrp_visit_switch_stmt): Likewise.
        (vr_values::simplify_switch_using_ranges): Likewise.

2018-08-27  Richard Biener  <rguenther@suse.de>

        * cfganal.h (rev_post_order_and_mark_dfs_back_seme): Declare.
        * cfganal.c (rev_post_order_and_mark_dfs_back_seme): New function.

        * tree-ssa-sccvn.h (struct vn_pval): New structure.
        (struct vn_nary_op_s): Add unwind_to member.  Add
        predicated_values flag and put result into a union together
        with a linked list of vn_pval.
        (struct vn_ssa_aux): Add name member to make maintaining
        a map of SSA name to vn_ssa_aux possible.  Remove no longer
        needed info, dfsnum, low, visited, on_sccstack, use_processed
        and range_info_anti_range_p members.
        (run_scc_vn, vn_eliminate, free_scc_vn, vn_valueize): Remove.
        (do_rpo_vn, run_rpo_vn, eliminate_with_rpo_vn, free_rpo_vn):
        New functions.
        (vn_valueize): New global.
        (vn_context_bb): Likewise.
        (VN_INFO_RANGE_INFO, VN_INFO_ANTI_RANGE_P, VN_INFO_RANGE_TYPE,
        VN_INFO_PTR_INFO): Remove.
        * tree-ssa-sccvn.c: ... (rewrite)
        (pass_fre::execute): For -O2+ initialize loops and run
        RPO VN in optimistic mode (iterating).  For -O1 and -Og
        run RPO VN in non-optimistic mode.
        * params.def (PARAM_SCCVN_MAX_SCC_SIZE): Remove.
        (PARAM_RPO_VN_MAX_LOOP_DEPTH): Add.
        * doc/invoke.texi (sccvn-max-scc-size): Remove.
        (rpo-vn-max-loop-depth): Document.
        * tree-ssa-alias.c (walk_non_aliased_vuses): Stop walking
        when valuezing the VUSE signals we walked out of the region.
        * tree-ssa-pre.c (phi_translate_1): Ignore predicated values.
        (phi_translate): Set VN context block to use for availability
        lookup.
        (compute_avail): Likewise.
        (pre_valueize): New function.
        (pass_pre::execute): Adjust to the RPO VN API.

        * tree-ssa-loop-ivcanon.c: Include tree-ssa-sccvn.h.
        (propagate_constants_for_unrolling): Remove.
        (tree_unroll_loops_completely): Perform value-numbering
        on the unrolled bodies loop parent.

2018-08-27  Richard Biener  <rguenther@suse.de>

        * tree-ssa-pre.c (compute_antic): Re-use inverted postorder
        for partial antic compute.

2018-08-27  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/87065
        * combine.c (simplify_if_then_else): Formatting fix.
        (if_then_else_cond): Guard MULT optimization with SCALAR_INT_MODE_P
        check.
        (known_cond): Don't return const_true_rtx for vector modes.  Use
        CONST0_RTX instead of const0_rtx.  Formatting fixes.

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/87069
        * gcov.c (process_file): Record files already processed
        and warn about a file being processed multiple times.

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/aarch64/aarch64.c (aarch64_override_options_internal):
        Set default values for x_aarch64_*_string strings.
        * config/aarch64/aarch64.opt: Remove --{march,mcpu,mtune}==
        prefix.  For -mabi do not print '=ABI' in help and use
        <option_value> format for -msve-vector-bits and -moverride
        options.

2018-08-26  Jeff Law  <law@redhat.com>

        * config/mips/frame-header-opt.c: Include "backend.h" rather than
        "cfg.h"

2018-08-26  Marek Polacek  <polacek@redhat.com>

        PR c++/87029, Implement -Wredundant-move.
        * doc/invoke.texi: Document -Wredundant-move.

2018-08-25  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/87059
        * builtins.c (expand_builtin_strncmp): Convert MIN_EXPR operand
        to the same type as the other.
        * fold-const.c (fold_binary_loc): Assert expectation.

2018-08-25  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (machopic_legitimize_pic_address): Clean up
        extraneous parentheses, dead code section and formatting.

2018-08-24  David Malcolm  <dmalcolm@redhat.com>

        PR c++/87091
        * diagnostic-show-locus.c (layout::layout): Ensure the margin is
        wide enough for jumps in the line-numbering to be visible.
        (layout::print_gap_in_line_numbering): New member function.
        (layout::calculate_line_spans): When using line numbering, merge
        line spans that are only 1 line apart.
        (diagnostic_show_locus): When printing line numbers, show gaps in
        line numbering directly, rather than printing headers.
        (selftest::test_diagnostic_show_locus_fixit_lines): Add test of
        line-numbering with multiple line spans.
        (selftest::test_fixit_insert_containing_newline_2): Add test of
        line-numbering, in which the spans are close enough to be merged.

2018-08-24  Aldy Hernandez  <aldyh@redhat.com>

        * gimple-ssa-evrp-analyze.c (set_ssa_range_info): Pass value_range
        to range_includes_zero_p.  Do not special case VR_ANTI_RANGE.
        * tree-vrp.c (range_is_nonnull): Remove.
        (range_includes_zero_p): Accept value_range instead of min/max.
        (extract_range_from_binary_expr_1): Do not early bail on
        POINTER_PLUS_EXPR.
        Use range_includes_zero_p instead of range_is_nonnull.
        (extract_range_from_unary_expr): Use range_includes_zero_p instead
        of range_is_nonnull.
        (vrp_meet_1): Pass value_range to range_includes_zero_p.  Do not
        special case VR_ANTI_RANGE.
        (vrp_finalize): Same.
        * tree-vrp.h (range_includes_zero_p): Pass value_range as argument
        instead of min/max.
        (range_is_nonnull): Remove.
        * vr-values.c (vrp_stmt_computes_nonzero): Use
        range_includes_zero_p instead of range_is_nonnull.
        (extract_range_basic): Pass value_range to range_includes_zero_p
        instead of range_is_nonnull.

2018-08-24  Uros Bizjak  <ubizjak@gmail.com>

        * emit-rtl.c (init_emit_once): Do not emit MODE_POINTER_BOUNDS RTXes.
        * emit-rtl.h (rtl_data): Remove return_bnd.
        * explow.c (trunc_int_for_mode): Do not handle POINTER_BOUNDS_MODE_P.
        * function.c (diddle_return_value): Do not handle crtl->return_bnd.
        * genmodes.c (complete_mode): Do not handle MODE_POINTER_BOUNDS.
        (POINTER_BOUNDS_MODE): Remove definition.
        (make_pointer_bounds_mode): Remove.
        (get_mode_class): Do not handle MODE_POINTER_BOUNDS.
        * machmode.h (POINTER_BOUNDS_MODE_P): Remove definition.
        (scalare_mode::includes_p): Do not handle MODE_POINTER_BOUNDS.
        * mode-classes.def: Do not define MODE_POINTER_BOUNDS.
        * stor-layout.c (int_mode_for_mode): Do not handle MODE_POINTER_BOUNDS.
        * tree-core.h (enum tree_index): Remove TI_POINTER_BOUNDS_TYPE.
        * varasm.c (output_constant_pool_2): Do not handle MODE_POINTER_BOUNDS.

        * config/i386/i386-modes.def (BND32, BND64): Remove.
        * config/i386/i386.c (dbx_register_map): Remove bound registers.
        (dbx64_register_map): Ditto.
        (svr4_dbx_register_map): Ditto.
        (indirect_thunk_bnd_needed): Remove.
        (indirect_thunks_bnd_used): Ditto.
        (indirect_return_bnd_needed): Ditto.
        (indirect_return_via_cx_bnd): Ditto.
        (enum indirect_thunk_prefix): Remove indirect_thunk_prefix_bnd.
        (indirect_thunk_name): Remove handling of indirect_thunk_prefix_bnd.
        (output_indirect_thunk): Ditto.  Remove need_prefix argument.
        (output_indirect_thunk_function): Remove handling of
        indirect_return_bnd_needed, indirect_return_via_cx_bnd,
        indirect_thunk_bnd_needed and indirect_thunks_bnd_used variables.
        (ix86_save_reg): Remove handling of crtl->return_bnd.
        (ix86_legitimate_constant_p): Remove handling of POINTER_BOUNDS_MODE_P.
        (ix86_print_operand_address_as): Remove handling of UNSPEC_BNDMK_ADDR
        and UNSPEC_BNDLX_ADDR.
        (ix86_output_indirect_branch_via_reg): Remove handling of
        indirect_thunk_prefix_bnd.
        (ix86_output_indirect_branch_via_push): Ditto.
        (ix86_output_function_return): Ditto.
        (ix86_output_indirect_function_return): Ditto.
        (avoid_func_arg_motion): Do not handle UNSPEC_BNDSTX.
        * config/i386/i386.h (FIXED_REGISTERS): Remove bound registers.
        (CALL_USED_REGISTERS): Ditto.
        (REG_ALLOC_ORDER): Update for removal of bound registers.
        (HI_REGISTER_NAMES): Ditto.
        * config/i386/i386.md (UNSPEC_BNDMK, UNSPEC_BNDMK_ADDR, UNSPEC_BNDSTX)
        (UNSPEC_BNDLDX, UNSPEC_BNDLDX_ADDR, UNSPEC_BNDCL, UNSPEC_BNDCU)
        (UNSPEC_BNDCN, UNSPEC_MPX_FENCE): Remove.
        (BND0_REG, BND1_REG, BND2_REG, BND3_REG): Remove
        (FIRST_PSEUDO_REG): Update.
        (BND): Remove mode iterator.
        * config/i386/predicates.md (bnd_mem_operator): Remove.

2018-08-24  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-stmts.c (vectorizable_bswap): Handle variable-length
        vectors.

2018-08-24  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-slp.c (vect_transform_slp_perm_load): Separate out
        the case in which the permute needs only a single element and
        repeats for every vector of the result.  Extend that case to
        handle variable-length vectors.
        * tree-vect-stmts.c (vectorizable_load): Update accordingly.

2018-08-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR debug/79342
        * dwarf2out.c (save_macinfo_strings): Call set_indirect_string
        on DW_MACINFO_start_file for -gsplit-dwarf -g3.

2018-08-24  Richard Biener  <rguenther@suse.de>

        * cfg.h (struct control_flow_graph): Add edge_flags_allocated and
        bb_flags_allocated members.
        (auto_flag): New RAII class for allocating flags.
        (auto_edge_flag): New RAII class for allocating edge flags.
        (auto_bb_flag): New RAII class for allocating bb flags.
        * cfgloop.c (verify_loop_structure): Allocate temporary edge
        flag dynamically.
        * cfganal.c (dfs_enumerate_from): Remove use of visited sbitmap
        in favor of temporarily allocated BB flag.
        * hsa-brig.c: Re-order includes.
        * hsa-dump.c: Likewise.
        * hsa-regalloc.c: Likewise.
        * print-rtl.c: Likewise.
        * profile-count.c: Likewise.

2018-08-24  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86989
        * config/rs6000/rs6000.c (toc_relative_expr_p): Check that the base is
        the TOC register.

2018-08-24  Aldy Hernandez  <aldyh@redhat.com>

        PR 87073/bootstrap
        * wide-int-range.cc (wide_int_range_div): Do not ignore result
        from wide_int_range_multiplicative_op.

2018-08-23  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        * tree-vect-data-refs.c (vect_grouped_store_supported): Fix typo
        "permutaion".

2018-08-23  Giuliano Belinassi  <giuliano.belinassi@usp.br>

        * genmatch.c (parser::parse_operation): Fix typo 'exapnded'
        to 'expanded'.

2018-08-23  Alexander Monakov  <amonakov@ispras.ru>

        * tree-scalar-evolution.c (final_value_replacement_loop): Dump
        full GENERIC expression used for replacement.

2018-08-23  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (abs_extent_range): Remove.
        (extract_range_into_wide_ints): Pass wide ints by reference.
        (extract_range_from_binary_expr_1): Rewrite the *DIV_EXPR code.
        Pass wide ints by reference in all calls to
        extract_range_into_wide_ints.
        * wide-int-range.cc (wide_int_range_div): New.
        * wide-int-range.h (wide_int_range_div): New.
        (wide_int_range_includes_zero_p): New.
        (wide_int_range_zero_p): New.

2018-08-23  Matthew Malcomson  <matthew.malcomson@arm.com>

        * config/aarch64/aarch64.md (arches): New enum.
        (arch): New enum attr.
        (arch_enabled): New attr.
        (enabled): Now uses arch_enabled only.
        (simd, sve, fp16): Removed attribute.
        (fp): Attr now defined in terms of 'arch'.
        (*mov<mode>_aarch64, *movsi_aarch64, *movdi_aarch64, *movti_aarch64,
        *movhf_aarch64, <optab><fcvt_target><GPF:mode>2,
        <FCVT_F2FIXED:fcvt_fixed_insn><GPF:mode>3,
        <FCVT_FIXED2F:fcvt_fixed_insn><GPI:mode>3): Merge 'fp' and 'simd'
        attributes into 'arch'.
        (*movsf_aarch64, *movdf_aarch64, *movtf_aarch64, *add<mode>3_aarch64,
        subdi3, neg<mode>2, <optab><mode>3, one_cmpl<mode>2,
        *<NLOGICAL:optab>_one_cmpl<mode>3, *xor_one_cmpl<mode>3,
        *aarch64_ashl_sisd_or_int_<mode>3, *aarch64_lshr_sisd_or_int_<mode>3,
        *aarch64_ashr_sisd_or_int_<mode>3, *aarch64_sisd_ushl): Convert use of
        'simd' attribute into 'arch'.
        (load_pair_sw_<SX:mode><SX2:mode>, load_pair_dw_<DX:mode><DX2:mode>,
        store_pair_sw_<SX:mode><SX2:mode>, store_pair_dw_<DX:mode><DX2:mode>):
        Convert use of 'fp' attribute to 'arch'.
        * config/aarch64/aarch64-simd.md (move_lo_quad_internal_<mode>,
        move_lo_quad_internal_<mode>): (different modes) Merge 'fp' and 'simd'
        into 'arch'.
        (move_lo_quad_internal_be_<mode>, move_lo_quad_internal_be_<mode>):
        (different modes) Merge 'fp' and 'simd' into 'arch'.
        (*aarch64_combinez<mode>, *aarch64_combinez_be<mode>): Merge 'fp' and
        'simd' into 'arch'.

2018-08-23  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/87026
        * expmed.c (canonicalize_comparison): If we can no longer create
        pseudoregisters, don't.

2018-08-23  Richard Earnshaw  <rearnsha@arm.com>

        PR target/86951
        * config/arm/arm-protos.h (arm_emit_speculation_barrier): New
        prototype.
        * config/arm/arm.c (speculation_barrier_libfunc): New static
        variable.
        (arm_init_libfuncs): Initialize it.
        (arm_emit_speculation_barrier): New function.
        * config/arm/arm.md (speculation_barrier): Call
        arm_emit_speculation_barrier for architectures that do not have
        DSB or ISB.
        (speculation_barrier_insn): Only match on Armv7 or later.

2018-08-23  Richard Biener  <rguenther@suse.de>

        PR middle-end/87024
        * tree-inline.c (copy_bb): Drop unused __builtin_va_arg_pack_len
        calls.

2018-08-23  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_evpc_sve_tbl): Fix handling
        of single-vector TBLs.
        (aarch64_vectorize_vec_perm_const): Set one_vector_p when only
        one input is given.

2018-08-23  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/85910
        * config/aarch64/aarch64.c (aarch64_expand_vec_perm_const_1): Fix
        aarch64_evpc_tbl guard.

2018-08-22  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * tree-ssa-dse.c (compute_trims): Avoid folding away undefined
        behaviour.

2018-08-22  Martin Sebor  <msebor@redhat.com>

        PR middle-end/87052
        * tree-pretty-print.c (pretty_print_string): Add argument.
        (dump_generic_node): Call to pretty_print_string with string size.

2018-08-22  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/86771
        * combine.c (try_combine): Do not allow splitting a resulting PARALLEL
        of two SETs into those two SETs, one to be placed at i2, if that SETs
        destination is modified between i2 and i3.

2018-08-22  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86725
        * tree-vect-loop.c (vect_inner_phi_in_double_reduction_p): New
        function.
        (vect_analyze_scalar_cycles_1): Check it.

2018-08-22  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86725
        * tree-vect-loop.c (vect_is_simple_reduction): When treating
        an outer loop phi as a double reduction, make sure that the
        single user of the phi result is an inner loop phi.

2018-08-22  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_analyze_group_access_1): Convert
        grouped stores with gaps to a strided group.

2018-08-22  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-stmts.c (get_group_load_store_type)
        (get_load_store_type): Only test STMT_VINFO_STRIDED_P for the
        first statement in a group.

2018-08-22  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.h (LINK_COMMAND_SPEC_A): Sync LTO options with
        the sequence used in gcc/gcc.c.

2018-08-22  Iain Sandoe  <iain@sandoe.co.uk>

        PR other/704
        * gcc-ar.c (main): Don’t try to invoke the plug-in if we’re not
        building it.

2018-08-22  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Adjust to use the
        Darwin10-specific unwinder-shim.
        * config/darwin12.h (LINK_GCC_C_SEQUENCE_SPEC): Remove.
        * config/rs6000/darwin.h (DARWIN_CRT1_SPEC, DARWIN_DYLIB1_SPEC): 
        New to cater for Darwin10 Rosetta.

2018-08-22  Iain Sandoe  <iain@sandoe.co.uk>

        * config/i386/i386.c (ix86_output_addr_diff_elt): Move the MACH-O
        specific test before the one for HAVE_AS_GOTOFF_IN_DATA.

2018-08-22  Iain Sandoe  <iain@sandoe.co.uk>

        PR bootstrap/81033
        PR target/81733
        PR target/52795
        * gcc/dwarf2out.c (FUNC_SECOND_SECT_LABEL): New.
        (dwarf2out_switch_text_section): Generate a local label for the
        second function sub-section and apply it as the second FDE start
        label.
        * gcc/final.c (final_scan_insn_1): Emit second FDE label after the
        second sub-section start.

2018-08-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86988
        * tree-vrp.c (vrp_prop::check_mem_ref): Bail out on VLAs.

2018-08-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86945
        * tree-cfg.c (generate_range_test): Use unsigned arithmetic.

2018-08-22  Alexandre Oliva <oliva@adacore.com>

        * config/rs6000/rs6000.c (SMALL_DATA_RELOC, SMALL_DATA_REG): Add
        a comment about how uses of r2 for .sdata2 come about.

2018-08-22  Alexandre Oliva <aoliva@redhat.com>

        * tree-ssa-reassoc.c (is_reassociable_op): Fix cut&pasto.

2018-08-21  Marek Polacek  <polacek@redhat.com>

        PR c++/86981, Implement -Wpessimizing-move.
        * doc/invoke.texi: Document -Wpessimizing-move.

2018-08-21  Jan Hubicka  <jh@suse.cz>

        * tree.c (find_decls_types_r): Do not check for redundant typedefs.
        * tree.h (is_redundant_typedef): Remove.
        * dwarf2out.c (is_redundant_typedef): Turn into static function.

2018-08-21  Jan Hubicka  <jh@suse.cz>

        * tree.c (free_lang_data_in_decl): Remove types from DECL_CONTEXT
        when possible.

2018-08-21  Tamar Christina  <tamar.christina@arm.com>

        * expmed.c (extract_low_bits): Reject invalid subregs early.

2018-08-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/86121
        * tree-ssa-strlen.c (adjust_last_stmt): Avoid folding away undefined
        behaviour.

2018-08-21  Rasmus Villemoes  <rv@rasmusvillemoes.dk>

        * config/vxworks.h: Guard vxworks_asm_out_constructor and
        vxworks_asm_out_destructor by !HAVE_INITFINI_ARRAY_SUPPORT
        * config/vxworks.c: Likewise.

2018-08-21  Rasmus Villemoes  <rv@rasmusvillemoes.dk>

        * config/vxworks.c: Set targetm.have_ctors_dtors
        if HAVE_INITFINI_ARRAY_SUPPORT.
        * config/vxworks.h: Set SUPPORTS_INIT_PRIORITY
        if HAVE_INITFINI_ARRAY_SUPPORT.

2018-08-21  Rasmus Villemoes  <rv@rasmusvillemoes.dk>

        * config/vxworks.h: Add $(WIND_BASE)/target/h/wrn/coreip to
        default search path for VxWorks < 7.

2018-08-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gimple-ssa-sprintf.c (decl_constant_value): Remove.
        (get_format_string): Refer to c_getstr.

2018-08-21  Tom de Vries  <tdevries@suse.de>

        * cgraph.h (debuginfo_early_init, debuginfo_init, debuginfo_fini)
        (debuginfo_start, debuginfo_stop, debuginfo_early_start)
        (debuginfo_early_stop): Declare.
        * cgraphunit.c (debuginfo_early_init, debuginfo_init, debuginfo_fini)
        (debuginfo_start, debuginfo_stop, debuginfo_early_start)
        (debuginfo_early_stop): New function.
        (symbol_table::finalize_compilation_unit): Call debuginfo_early_start
        and debuginfo_early_stop.
        * dwarf2out.c (dwarf2out_finish, dwarf2out_early_finish): Dump dwarf.
        * toplev.c (compile_file): Call debuginfo_start and debuginfo_stop.
        (general_init): Call debuginfo_early_init.
        (finalize): Call debuginfo_fini.
        (do_compile): Call debuginfo_init.
        * doc/invoke.texi (@gccoptlist): Add -fdump-debug and
        -fdump-early-debug.
        (@item -fdump-debug, @item -fdump-earlydebug): Add.

2018-08-21  Tom de Vries  <tdevries@suse.de>

        * dwarf2out.c (print_dw_val, print_loc_descr, print_die): Handle
        flag_dump_noaddr and flag_dump_unnumbered.

2018-08-21  Aldy Hernandez  <aldyh@redhat.com>

        * wide-int-range.cc (wide_int_range_abs): New.
        (wide_int_range_order_set): Rename from wide_int_range_min_max.
        * wide-int-range.h (wide_int_range_abs): New.
        (wide_int_range_min_max): New.
        * tree-vrp.c (extract_range_from_unary_expr): Rewrite ABS_EXPR
        case to call wide_int_range_abs.
        Rewrite MIN/MAX_EXPR to call wide_int_range_min_max.
        (extract_range_from_abs_expr): Delete.

2018-08-20  Michael Meissner  <meissner@linux.ibm.com>

        PR target/87033
        * config/rs6000/rs6000.md (extendsi<mode>2): Change constraints
        from 'Y' to 'YZ' to enable the LWAX instruction to be generated
        for indexed loads.

2018-08-20  Nathan Sidwell  <nathan@acm.org>
            Jeff Law <law@redhat.com>

        * config/s390/s390-c (s390_macro_to_expand): Use cpp_macro_p.
        * config/spu/spu-c.c (spu_macro_to_expand): Likewise.

2018-08-20  David Malcolm  <dmalcolm@redhat.com>

        PR other/84889
        * attribs.c (diag_attr_exclusions): Add auto_diagnostic_group instance.
        (decl_attributes): Likewise.
        * calls.c (maybe_warn_nonstring_arg): Add auto_diagnostic_group
        instance.
        * cgraphunit.c (maybe_diag_incompatible_alias): Likewise.
        * diagnostic-core.h (class auto_diagnostic_group): New class.
        * diagnostic.c (diagnostic_initialize): Initialize the new fields.
        (diagnostic_report_diagnostic): Handle the first diagnostics within
        a group.
        (emit_diagnostic): Add auto_diagnostic_group instance.
        (inform): Likewise.
        (inform_n): Likewise.
        (warning): Likewise.
        (warning_at): Likewise.
        (warning_n): Likewise.
        (pedwarn): Likewise.
        (permerror): Likewise.
        (error): Likewise.
        (error_n): Likewise.
        (error_at): Likewise.
        (sorry): Likewise.
        (fatal_error): Likewise.
        (internal_error): Likewise.
        (internal_error_no_backtrace): Likewise.
        (auto_diagnostic_group::auto_diagnostic_group): New ctor.
        (auto_diagnostic_group::~auto_diagnostic_group): New dtor.
        * diagnostic.h (struct diagnostic_context): Add fields
        "diagnostic_group_nesting_depth",
        "diagnostic_group_emission_count", "begin_group_cb",
        "end_group_cb".
        * gimple-ssa-isolate-paths.c (find_implicit_erroneous_behavior):
        Add auto_diagnostic_group instance(s).
        (find_explicit_erroneous_behavior): Likewise.
        * gimple-ssa-warn-alloca.c (pass_walloca::execute): Likewise.
        * gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Likewise.
        * gimplify.c (warn_implicit_fallthrough_r): Likewise.
        (gimplify_va_arg_expr): Likewise.
        * hsa-gen.c (HSA_SORRY_ATV): Likewise.
        (HSA_SORRY_AT): Likewise.
        * ipa-devirt.c (compare_virtual_tables): Likewise.
        (warn_odr): Likewise.
        * multiple_target.c (expand_target_clones): Likewise.
        * opts-common.c (cmdline_handle_error): Likewise.
        * reginfo.c (globalize_reg): Likewise.
        * substring-locations.c (format_warning_n_va): Likewise.
        * tree-inline.c (expand_call_inline): Likewise.
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Likewise.
        * tree-ssa-loop-niter.c
        (do_warn_aggressive_loop_optimizations): Likewise.
        * tree-ssa-uninit.c (warn_uninit): Likewise.
        * tree.c (warn_deprecated_use): Likewise.

2018-08-20  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/87014
        * config/i386/i386.md (eh_return): Always update EH return
        address in word_mode.

2018-08-20  Chung-Lin Tang  <cltang@codesourcery.com>

        * targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when
        TARGET_SPLIT_COMPLEX_ARG is defined.

2018-08-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * expr.c (store_field): Change gcc_assert to gcc_checking_assert.

2018-08-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR target/86984
        * expr.c (expand_assignment): Assert that bitpos is positive.
        (store_field): Likewise
        (expand_expr_real_1): Make sure that bitpos is positive.
        * config/alpha/alpha.h (CONSTANT_ADDRESS_P): Avoid signed
        integer overflow.

2018-08-20  Nathan Sidwell  <nathan@acm.org>

        * Makefile.in (CPP_ID_DATA_H): Delete.
        (CPP_INTERNAL_H): Don't add it.
        (GTFILES): Replace CPP_ID_DATA_H with CPPLIB_H.
        * gengtype.c (open_base_files): Replace cpp-id-data.h with cpplib.h

2018-08-20  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/78655
        * tree-vrp.c (extract_range_from_binary_expr_1): Make
        pointer + offset nonnull if either operand is nonnull work.

2018-08-20  Tom de Vries  <tdevries@suse.de>

        * dwarf2out.c (add_scalar_info): Don't add reference to existing die
        unless the referenced die describes the added property using
        DW_AT_location or DW_AT_const_value.  Fall back to exprloc case.
        Otherwise, add a DW_AT_location to the referenced die.

2018-08-19  Uros Bizjak  <ubizjak@gmail.com>

        PR target/86994
        * config/i386/i386.c (ix86_rtx_costs) [case SET]: Check source for
        register_operand when calling ix86_set_reg_reg_cost.
        [case CONST_INT, case CONST, case LABEL_REF, case SYMBOL_REF]:
        Set *total to 0 for operands that satisfy x86_64_immediate_operand
        predicate and to 1 otherwise.

2018-08-18  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (darwin_override_options): If -gsplit-dwarf is set,
        emit a diagnostic that it is not supported and reset the option.
        * config/darwin.h (DRIVER_SELF_SPECS): Note that gsplit-dwarf is not
        supported and consume the option.  (ASM_FINAL_SPEC): New.

2018-08-17  Segher Boessenkool  <segher@kernel.crashing.org>

        * doc/md.texi (Patterns): Use @ref instead of @xref in the middle of
        a sentence.

2018-08-17  Sandra Loosemore  <sandra@codesourcery.com>

        C-SKY port: Documentation

        * doc/extend.texi (C-SKY Function Attributes): New section.
        * doc/invoke.texi (Option Summary): Add C-SKY options.
        (C-SKY Options): New section.
        * doc/md.texi (Machine Constraints): Document C-SKY constraints.

2018-08-17  Jojo  <jijie_rong@c-sky.com>
            Huibin Wang  <huibin_wang@c-sky.com>
            Sandra Loosemore  <sandra@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>

        C-SKY port: Backend implementation

        * config/csky/*: New.
        * common/config/csky/*: New.

2018-08-17  Jojo  <jijie_rong@c-sky.com>
            Huibin Wang  <huibin_wang@c-sky.com>
            Sandra Loosemore  <sandra@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>
            Andrew Jenner  <andrew@codesourcery.com>

        C-SKY port: Configury

        * config.gcc (csky-*-*): New.
        * configure.ac: Add csky to targets for dwarf2 debug_line support.
        * configure: Regenerated.

2018-08-17  David Malcolm  <dmalcolm@redhat.com>

        * dump-context.h: Include "dumpfile.h".
        (dump_context::dump_printf_va): Convert final param from va_list
        to va_list *.  Convert from ATTRIBUTE_PRINTF to
        ATTRIBUTE_GCC_DUMP_PRINTF.
        (dump_context::dump_printf_loc_va): Likewise.
        * dumpfile.c: Include "stringpool.h".
        (make_item_for_dump_printf_va): Delete.
        (make_item_for_dump_printf): Delete.
        (class dump_pretty_printer): New class.
        (dump_pretty_printer::dump_pretty_printer): New ctor.
        (dump_pretty_printer::emit_items): New member function.
        (dump_pretty_printer::emit_any_pending_textual_chunks): New member
        function.
        (dump_pretty_printer::emit_item): New member function.
        (dump_pretty_printer::stash_item): New member function.
        (dump_pretty_printer::format_decoder_cb): New member function.
        (dump_pretty_printer::decode_format): New member function.
        (dump_context::dump_printf_va): Reimplement in terms of
        dump_pretty_printer.
        (dump_context::dump_printf_loc_va): Convert final param from va_list
        to va_list *.
        (dump_context::begin_scope): Reimplement call to
        make_item_for_dump_printf.
        (dump_printf): Update for change to dump_printf_va.
        (dump_printf_loc): Likewise.
        (selftest::test_capture_of_dump_calls): Convert "stmt" from
        greturn * to gimple *.  Add a test_decl.  Add tests of dump_printf
        with %T, %E, and %G.
        * dumpfile.h (ATTRIBUTE_GCC_DUMP_PRINTF): New macro.
        (dump_printf): Replace ATTRIBUTE_PRINTF_2 with
        ATTRIBUTE_GCC_DUMP_PRINTF (2, 3).
        (dump_printf_loc): Replace ATTRIBUTE_PRINTF_3 with
        ATTRIBUTE_GCC_DUMP_PRINTF (3, 0).
        * tree-vect-data-refs.c (vect_lanes_optab_supported_p): Convert
        use of HOST_WIDE_INT_PRINT_DEC on unsigned HOST_WIDE_INT "count"
        within a dump_printf_loc call to "%wu".
        (vector_alignment_reachable_p): Merge two dump_printf[_loc] calls,
        converting a use of HOST_WIDE_INT_PRINT_DEC to "%wd".  Add a
        missing space after "=".
        * tree-vect-loop.c (vect_analyze_loop_2) Within a dump_printf
        call, convert use of HOST_WIDE_INT_PRINT_DEC to "%wd".
        * tree-vect-slp.c (vect_slp_bb): Within a dump_printf_loc call,
        convert use of HOST_WIDE_INT_PRINT_UNSIGNED to "%wu".
        * tree-vectorizer.c (try_vectorize_loop_1): Likewise.  Remove
        duplicate "vectorized" from message.

2018-08-17  Szabolcs Nagy  <szabolcs.nagy@arm.com>

        * config/arm/arm-builtins.c (arm_init_simd_builtin_types): Clear
        polyNxK_t element's TYPE_STRING_FLAG.

2018-08-17  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (*cbranch, *creturn): Name these patterns
        (they were unnamed before).  Fix comments.

2018-08-17  Nathan Sidwell  <nathan@acm.org>

        * cppbuiltin.c: Include "cpplib.h", not "cpp-id-data.h".

2018-08-17  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86841
        * wide-int-range.cc (wide_int_range_lshift): Use to_uhwi.

2018-08-17  Martin Liska  <mliska@suse.cz>

        * common.opt: Remove Warn, Init and Report for options with
        Ignore/Deprecated flag. Warning is done automatically for
        Deprecated flags.
        * config/i386/i386.opt: Likewise.
        * config/ia64/ia64.opt: Likewise.
        * config/rs6000/rs6000.opt: Likewise.
        * cppbuiltin.c (define_builtin_macros_for_compilation_flags):
        Remove usage of flag_check_pointer_bounds.
        * lto-wrapper.c (merge_and_complain): Do not handle
        OPT_fcheck_pointer_bounds.
        (append_compiler_options): Likewise.
        * opt-functions.awk: Do not handle Deprecated.
        * optc-gen.awk: Check that Var, Report and Init are not
        used for an option with Ignore/Deprecated flag.
        * opts-common.c (decode_cmdline_option): Do not report
        CL_ERR_DEPRECATED.
        (read_cmdline_option): Report warning for OPT_SPECIAL_deprecated
        options.
        * opts.h (struct cl_option): Remove cl_deprecated flag.
        (CL_ERR_DEPRECATED): Remove error enum value.

2018-08-17  Richard Biener  <rguenther@suse.de>

        PR middle-end/86505
        * tree-inline.c (copy_bb): When inlining __builtin_va_arg_pack_len ()
        across a va-arg-pack using call adjust its return value accordingly.

2018-08-16  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86853
        * gimple-ssa-sprintf.c (struct format_result): Rename member.
        (struct fmtresult): Add member and initialize it in ctors.
        (format_character): Handle %C.  Extend range to NUL.  Set MAYFAIL.
        (format_string): Handle %S the same as %ls.  Set MAYFAIL.
        (format_directive): Set POSUNDER4K when MAYFAIL is set.
        (parse_directive): Handle %C same as %c.
        (sprintf_dom_walker::compute_format_length): Adjust.
        (is_call_safe): Adjust.

2018-08-16  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * builtins.c (c_strlen): Add new parameter eltsize.  Use it
        for determining how to count the elements.
        * builtins.h (c_strlen): Adjust prototype.
        * expr.c (string_constant): Add new parameter mem_size.
        Set *mem_size appropriately.
        * expr.h (string_constant): Adjust protoype.
        * gimple-fold.c (get_range_strlen): Add new parameter eltsize.
        * gimple-fold.h (get_range_strlen): Adjust prototype.
        * gimple-ssa-sprintf.c (get_string_length): Add new parameter eltsize.
        (format_string): Call get_string_length with eltsize.

2018-08-16  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic.c (default_diagnostic_start_span_fn): Call pp_string
        to emit the span, rather than setting it as the prefix.

2018-08-16  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic-show-locus.c (layout::start_annotation_line): Add
        "margin_char" parameter, defaulting to space.  Use it in place
        of pp_space for the initial part of the margin.
        (layout::print_leading_fixits): Use '+' when filling the margin
        of line-insertion fix-it hints.

2018-08-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (two unnamed define_insn and define_split):
        Delete.

2018-08-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md: Don't set length attribute to the default
        value.
        * config/rs6000/darwin.md: Ditto.
        * config/rs6000/dfp.md: Ditto.
        * config/rs6000/htm.md: Ditto.
        * config/rs6000/rs6000.md: Ditto.
        * config/rs6000/sync.md: Ditto.
        * config/rs6000/vsx.md: Ditto.

2018-08-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md: Don't set length attribute to the default
        value, for branch instructions.
        * config/rs6000/darwin.md: Ditto.
        * config/rs6000/rs6000.md: Ditto.

2018-08-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (length): Always define as const_int 4.
        (unnamed conditional branch define_insn): Set length to 4 or 8
        depending on offset.
        (<bd>_<mode>): Similar, for alternative 0.
        (<bd>tf_<mode>): Ditto.

2018-08-16  Tamar Christina  <tamar.christina@arm.com>

        * expr.c (copy_blkmode_to_reg): Perform larger copies when safe.

2018-08-16  Matthew Malcomson  <matthew.malcomson@arm.com>

        * doc/rtl.texi: Replace old RTX class names with new names.


2018-08-16  Vlad Lazar  <vlad.lazar@arm.com>

        * expmed.h (canonicalize_comparison): New declaration.
        * expmed.c (canonicalize_comparison, equivalent_cmp_code): New function.
        * expmed.c (emit_store_flag_1): Add call to canonicalize_comparison.
        * optabs.c (prepare_cmp_insn): Likewise.
        * rtl.h (unsigned_condition_p): New function which checks if a
        comparison operator is unsigned.

2018-08-16  Nathan Sidwell  <nathan@acm.org>

        * config/rs6000/rs6000-c.c (rs6000_macro_to_expend): Use cpp_macro_p.
        * config/powerpcspc/powerpcspe-c.c (rs6000_macro_to_expend): Likewise.

2018-08-16  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/arm.c (arm_can_change_mode_class): Disallow subreg.
        * config/arm/neon.md (movv4hf, movv8hf): Refactored to..
        (mov<mov>): ..this and enable unconditionally.

2018-08-16  Tamar Christina  <tamar.christina@arm.com>

        * config/arm/neon.md (*neon_mov<mode>): Remove reg-to-reg alternative.

2018-08-16  Sam Tebbs  <sam.tebbs@arm.com>

        * config/aarch64/aarch64.opt (mlow-precision-recip-sqrt)
        (mlow-precision-sqrt, mlow-precision-div, mverbose-cost-dump): Replace
        "Common" with "Target".

2018-08-15  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.opt (mmitigate-rop): Mark as deprecated.
        * doc/invoke.texi (mmitigate-rop): Remove.
        * config/i386/i386.c: Do not include "regrename.h".
        (ix86_rop_should_change_byte_p, reg_encoded_number)
        (ix86_get_modrm_for_rop, set_rop_modrm_reg_bits, ix86_mitigate_rop):
        Remove.
        (ix86_reorg): Remove call to ix86_mitigate_rop.
        * config/i386/i386.md (attr "modrm_class"): Remove.
        (cmp<mode>_ccno_1, mov<mode>_xor, movstrict<mode>_xor)
        (x86_mov<mode>cc_0_m1. x86_mov<mode>cc_0_m1_se)
        (x86_mov<mode>cc_0_m1_neg): Remove modrm_class attribute override.

2018-08-15  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs600.c (rs6000_gimple_fold_builtin): Add entries to
        allow folding of mergeh() and mergel() for the float and double types.
        (fold_mergehl_helper): Rework to handle building a permute tree
        for float vectors.

2018-08-15  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (expand_vec_perm_movs): Enable V4SFmode
        for TARGET_SSE.

2018-08-15  David Malcolm  <dmalcolm@redhat.com>

        * common.opt (fdiagnostics-show-labels): New option.
        * diagnostic-show-locus.c (class layout_range): Add field
        "m_label".
        (class layout): Add field "m_show_labels_p".
        (layout_range::layout_range): Add param "label" and use it to
        initialize m_label.
        (make_range): Pass in NULL for new "label" param of layout_range's
        ctor.
        (layout::layout): Initialize m_show_labels_p.
        (layout::maybe_add_location_range): Pass in loc_range->m_label
        when constructing layout_range instances.
        (struct line_label): New struct.
        (layout::print_any_labels): New member function.
        (layout::print_line): Call it if label-printing is enabled.
        (selftest::test_one_liner_labels): New test.
        (selftest::test_diagnostic_show_locus_one_liner): Call it.
        * diagnostic.c (diagnostic_initialize): Initialize
        context->show_labels_p.
        * diagnostic.h (struct diagnostic_context): Add field
        "show_labels_p".
        * doc/invoke.texi (Diagnostic Message Formatting Options): Add
        -fno-diagnostics-show-labels.
        * dwarf2out.c (gen_producer_string): Add
        OPT_fdiagnostics_show_labels to the ignored options.
        * gcc-rich-location.c (gcc_rich_location::add_expr): Add "label"
        param.
        (gcc_rich_location::maybe_add_expr): Likewise.
        * gcc-rich-location.h (gcc_rich_location::gcc_rich_location): Add
        label" param, defaulting to NULL.
        (gcc_rich_location::add_expr): Add "label" param.
        (gcc_rich_location::maybe_add_expr): Likewise.
        (class text_range_label): New class.
        (class range_label_for_type_mismatch): New class.
        * gimple-ssa-sprintf.c (fmtwarn): Pass NULL for new label params
        of format_warning_va.
        (fmtwarn_n): Likewise for new params of format_warning_n_va.
        * lto-wrapper.c (merge_and_complain): Add
        OPT_fdiagnostics_show_labels to the "pick one setting" options.
        (append_compiler_options): Likewise to the dropped options.
        (append_diag_options): Likewise to the passed-on options.
        * opts.c (common_handle_option): Handle the new option.
        * selftest-diagnostic.c
        (test_diagnostic_context::test_diagnostic_context): Enable
        show_labels_p.
        * substring-locations.c: Include "gcc-rich-location.h".
        (format_warning_n_va): Add "fmt_label" and "param_label" params
        and use them as appropriate.
        (format_warning_va): Add "fmt_label" and "param_label" params,
        passing them on to format_warning_n_va.
        (format_warning_at_substring): Likewise.
        (format_warning_at_substring_n): Likewise.
        * substring-locations.h (format_warning_va): Add "fmt_label" and
        "param_label" params.
        (format_warning_n_va): Likewise.
        (format_warning_at_substring): Likewise.
        (format_warning_at_substring_n): Likewise.
        * toplev.c (general_init): Initialize global_dc->show_labels_p.

2018-08-15  Qing Zhao  <qing.zhao@oracle.com>

        PR testsuite/86519
        * builtins.c (expand_builtin_memcmp): Do not expand the call
        when overflow is detected.

2018-08-15  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/71625
        * config/aarch64/aarch64-builtins.c
        (aarch64_init_simd_builtin_types): Clear Poly8_t's TYPE_STRING_FLAG.

2018-08-15  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_reorg): Remove loop.

2018-08-15  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c
         (darwin_function_switched_text_sections): Delete.
        * gcc/config/darwin.h
         (TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS): Likewise.

2018-08-15  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/81685
        * config/darwin.h: (DEBUG_STR_OFFSETS_SECTION, DEBUG_LOCLISTS_SECTION,
        DEBUG_RNGLISTS_SECTION) new macros.  (DEBUG_PUBNAMES_SECTION,
        DEBUG_PUBTYPES_SECTION) update to include GNU variant.

2018-08-15  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86925
        * predict.c (expr_expected_value_1): When taking
        later predictor, assign also probability.
        Use fold_build2_initializer_loc in order to fold
        the expression in -frounding-math.

2018-08-14  Allan Sandfeld Jensen <allan.jensen@qt.io>

        * config/i386/i386.c (expand_vec_perm_movs): New method matching movs
        patterns.
        (expand_vec_perm_1): Try the new method.

2018-08-14  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/86547
        * lra-lives.c (remove_some_program_points_and_update_live_ranges):
        Check whether lra_live_max_point is 0 before dividing.

2018-08-14  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86650
        * tree-vrp.c (vrp_prop::check_array_ref): Print an inform message.
        (vrp_prop::check_mem_ref): Same.

2018-08-13  Liu Hao <lh_mouse@126.com>

        * pretty-print.c (eat_esc_sequence): Swap the foreground and
        background colors if the COMMON_LVB_REVERSE_VIDEO flag is set,
        and clear it thereafter, as it only works for DBCS.

2018-08-13  Liu Hao <lh_mouse@126.com>

        * pretty-print.c (mingw_ansi_fputs): Do not call _close() on the
        handle returned by _get_osf_handle().

2018-08-13  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * gcc/config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add support
        for folding vec_perm.

2018-08-13  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin):
        Add support for gimple-folding of vec_pack() and vec_unpack()
        intrinsics.

2018-08-13  Will Schmidt <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_builtin_valid_without_lhs): Add
        vec_xst variants to the list.
        (rs6000_gimple_fold_builtin): Add support for folding unaligned
        vector loads and stores.

2018-08-13  David Edelsohn  <dje.gcc@gmail.com>

        * config.gcc (rs6000-ibm-aix4.x): Delete.
        (rs6000-ibm-aix5.1): Delete.
        (rs6000-ibm-aix5.2): Delete.
        (rs6000-ibm-aix5.3): Delete.
        * config/rs6000/aix43.h: Delete.
        * config/rs6000/aix51.h: Delete.
        * config/rs6000/aix52.h: Delete.
        * config/rs6000/t-aix43: Delete.

2018-08-13  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_decompose_constant_pool_ref):
        New function.
        (s390_decompose_address): Factor out constant pool ref
        decomposition.

2018-08-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-predicates.c
        (nds32_can_use_bclr_p): Change return type as bool.
        (nds32_can_use_bset_p): Ditto.
        (nds32_can_use_btgl_p): Ditto.
        (nds32_can_use_bitci_p): Ditto.
        * config/nds32/nds32-protos.h
        (nds32_can_use_bclr_p): Change declaration.
        (nds32_can_use_bset_p): Ditto.
        (nds32_can_use_btgl_p): Ditto.
        (nds32_can_use_bitci_p): Ditto.

2018-08-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_expand_prologue, nds32_expand_epilogue):
        Support -msched-prolog-epilog option.
        * config/nds32/nds32.opt (msched-prolog-epilog): New option.

2018-08-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * common/config/nds32/nds32-common.c
        (nds32_option_optimization_table): Enalbe -malways-align.

2018-08-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*): Add nds32_isr.h and nds32_init.inc in
        extra_headers.
        * common/config/nds32/nds32-common.c (nds32_handle_option): Handle
        OPT_misr_secure_ case.
        * config/nds32/nds32-isr.c: Implementation of backward compatibility.
        * config/nds32/nds32-protos.h (nds32_isr_function_critical_p): New.
        * config/nds32/nds32.c (nds32_attribute_table): Add critical and
        secure attribute.
        * config/nds32/nds32.h (nds32_isr_nested_type): Add NDS32_CRITICAL.
        (nds32_isr_info): New field security_level.
        (TARGET_ISR_VECTOR_SIZE_4_BYTE): New macro.
        * config/nds32/nds32.md (return_internal): Consider critical attribute.
        * config/nds32/nds32.opt (misr-secure): New option.
        * config/nds32/nds32_init.inc: New file.
        * config/nds32/nds32_isr.h: New file.

2018-08-11  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.md (UNSPEC_MEMORY_BARRIER): New unspec enum.
        Update comment for atomic instructions.
        (atomic_storeqi, atomic_storehi, atomic_storesi, atomic_storesf,
        atomic_loaddf, atomic_loaddf_1, atomic_storedf, atomic_storedf_1):
        Remove.
        (atomic_loaddi): Revise fence expansion to only emit fence prior to
        load for __ATOMIC_SEQ_CST model.
        (atomic_loaddi_1): Remove float register target.
        (atomic_storedi): Handle CONST_INT values.
        (atomic_storedi_1): Remove float register source.  Add special case
        for zero value.
        (memory_barrier): New expander and insn.

2018-08-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86835
        * tree-ssa-math-opts.c (insert_reciprocals): Even when inserting
        new_stmt after def_gsi, make sure to insert new_square_stmt after
        that stmt, not 2 stmts before it.

2018-08-10  Alexander Monakov  <amonakov@ispras.ru>

        PR target/82418
        * config/i386/i386.md (<s>mul<mode>3_highpart): Use DWIH mode iterator
        instead of SWI48.

2018-08-10  Martin Liska  <mliska@suse.cz>

        PR target/83610
        * builtin-types.def (BT_FN_LONG_LONG_LONG_DOUBLE): Add new
        function type.
        * builtins.c (expand_builtin_expect_with_probability):
        New function.
        (expand_builtin_expect_with_probability): New function.
        (build_builtin_expect_predicate): Add new argumnet probability
        for BUILT_IN_EXPECT_WITH_PROBABILITY.
        (fold_builtin_expect):
        (fold_builtin_2):
        (fold_builtin_3):
        * builtins.def (BUILT_IN_EXPECT_WITH_PROBABILITY):
        * builtins.h (fold_builtin_expect): Set new argument.
        * doc/extend.texi: Document __builtin_expect_with_probability.
        * doc/invoke.texi: Likewise.
        * gimple-fold.c (gimple_fold_call): Pass new argument.
        * ipa-fnsummary.c (find_foldable_builtin_expect): Handle
        also BUILT_IN_EXPECT_WITH_PROBABILITY.
        * predict.c (get_predictor_value): New function.
        (expr_expected_value): Add new argument probability. Assume
        that predictor and probability are always non-null.
        (expr_expected_value_1): Likewise.  For __builtin_expect and
        __builtin_expect_with_probability set probability.  Handle
        combination in binary expressions.
        (tree_predict_by_opcode): Simplify code by simply calling
        get_predictor_value.
        (pass_strip_predict_hints::execute): Add handling of
        BUILT_IN_EXPECT_WITH_PROBABILITY.
        * predict.def (PRED_BUILTIN_EXPECT_WITH_PROBABILITY): Add
        new predictor.
        * tree.h (DECL_BUILT_IN_P): New function.

2018-08-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/85799
        * passes.def: Add argument for pass_strip_predict_hints.
        * predict.c (class pass_strip_predict_hints): Add new argument
        early_p.
        (strip_predictor_early): New function.
        (pass_strip_predict_hints::execute): Call the function to
        strip predictors.
        (strip_predict_hints): New function.
        * predict.def: Fix comment.

2018-08-10  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

        * Makefile.in: Clarify which tm.texi to copy over to assert the
        right to grant a GFDL license for all.

2018-08-09  Jeff Law  <law@redhat.com>

        * config/m68k/m68k.c (m68k_adjust_decorated_operand): Remove
        unused variable.

2018-08-09  Andreas Schwab  <schwab@linux-m68k.org>

        * config/m68k/m68k-protos.h (m68k_final_prescan_insn): Remove
        prototype.

2018-08-09  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vectorizable_reduction): Allow inner-loop
        reductions for variable-length vectors.

2018-08-09  David Malcolm  <dmalcolm@redhat.com>

        PR other/84889
        * common.opt (fdiagnostics-show-line-numbers): New option.
        * diagnostic-show-locus.c (class layout): Add fields
        "m_show_line_numbers_p" and "m_linenum_width";
        (num_digits): New function.
        (test_num_digits): New function.
        (layout::layout): Initialize new fields.  Update m_x_offset
        logic to handle any left margin.
        (layout::print_source_line): Print line number when requested.
        (layout::start_annotation_line): New member function.
        (layout::print_annotation_line): Call it.
        (layout::print_leading_fixits): Likewise.
        (layout::print_trailing_fixits): Likewise.  Update calls to
        move_to_column for new parameter.
        (layout::get_x_bound_for_row): Add "add_left_margin" param and use
        it to potentially call start_annotation_line.
        (layout::show_ruler): Call start_annotation_line.
        (selftest::test_line_numbers_multiline_range): New selftest.
        (selftest::diagnostic_show_locus_c_tests): Call test_num_digits
        and selftest::test_line_numbers_multiline_range.
        * diagnostic.c (diagnostic_initialize): Initialize
        show_line_numbers_p.
        * diagnostic.h (struct diagnostic_context): Add field
        "show_line_numbers_p".
        * doc/invoke.texi (Diagnostic Message Formatting Options): Add
        -fno-diagnostics-show-line-numbers.
        * dwarf2out.c (gen_producer_string): Add
        OPT_fdiagnostics_show_line_numbers to the ignored options.
        * lto-wrapper.c (merge_and_complain): Likewise to the "pick
        one setting" options.
        (append_compiler_options): Likewise to the dropped options.
        (append_diag_options): Likewise to the passed-on options.
        * opts.c (common_handle_option): Handle the new option.
        * toplev.c (general_init): Set up global_dc->show_line_numbers_p.

2018-08-09  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC AltiVec Built-in Functions Available on
        ISA 2.07): Correct spelling of bcdsub to be __builtin_bcdsub.  Add
        third argument of type "const signed char" to descriptions of
        __builtin_bcdadd, __builtin_bcdadd_lt, __builtin_bcdadd_eq,
        __builtin_bcdadd_gt, __builtin_bcdadd_ov, __builtin_bcdsub,
        __builtin_bcdsub_lt, __builtin_bcdsub_eq, __builtin_bcdsub_gt,
        __builtin_bcdsub_ov functions.

2018-08-09  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86858
        * tree-vect-loop.c (vect_is_simple_reduction): Restore
        flow_bb_inside_loop_p calls.

2018-08-09  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86871
        * tree-vect-stmts.c (vect_transform_stmt): Use gimple_get_lhs
        instead of gimple_assign_lhs.

2018-08-09  Richard Earnshaw  <rearnsha@arm.com>

        PR target/86887
        * config/aarch64/aarch64.md (add<mode>3_carryinC_zero): Add missing
        register constraint to operand 0.
        (add<mode>3_carryinC): Likewise.
        (add<mode>3_carryinV_zero, add<mode>3_carryinV): Likewise.

2018-08-09  Martin Liska  <mliska@suse.cz>

        PR c/86895
        * common.opt: Remove extra line.

2018-08-09  Martin Liska  <mliska@suse.cz>

        * params.def (PARAM_ALIGN_LOOP_ITERATIONS): Remove double dots
        at the end of a line, make first letter capital and end up
        a sentence with a dot.
        (PARAM_LOOP_INTERCHANGE_STRIDE_RATIO): Likewise.
        (PARAM_LOOP_BLOCK_TILE_SIZE): Likewise.
        (PARAM_GRAPHITE_MAX_NB_SCOP_PARAMS): Likewise.
        (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP): Likewise.
        (PARAM_MAX_ISL_OPERATIONS): Likewise.
        (PARAM_GRAPHITE_ALLOW_CODEGEN_ERRORS): Likewise.
        (PARAM_PROFILE_FUNC_INTERNAL_ID): Likewise.
        (PARAM_INDIR_CALL_TOPN_PROFILE): Likewise.
        (PARAM_SLP_MAX_INSNS_IN_BB): Likewise.
        (PARAM_IPA_CP_EVAL_THRESHOLD): Likewise.
        (PARAM_IPA_CP_RECURSION_PENALTY): Likewise.
        (PARAM_IPA_CP_SINGLE_CALL_PENALTY): Likewise.
        (PARAM_IPA_CP_LOOP_HINT_BONUS): Likewise.
        (PARAM_IPA_CP_ARRAY_INDEX_HINT_BONUS): Likewise.
        (PARAM_TREE_REASSOC_WIDTH): Likewise.
        (PARAM_HSA_GEN_DEBUG_STORES): Likewise.
        (PARAM_MAX_SPECULATIVE_DEVIRT_MAYDEFS): Likewise.
        (PARAM_MAX_VRP_SWITCH_ASSERTIONS): Likewise.

2018-08-09  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR target/84332
        * config/s390/s390.c (s390_option_override_internal): Reduce the
        stack-clash-protection-probe-interval param if it would be too big
        for z900.

2018-08-08  Andreas Schwab  <schwab@linux-m68k.org>

        PR target/46179
        * config/m68k/m68k.h (FINAL_PRESCAN_INSN): Don't define.
        * config/m68k/m68k.c (handle_move_double): Don't call
        m68k_final_prescan_insn.
        (m68k_adjust_decorated_operand): Renamed from
        m68k_final_prescan_insn, remove first and third operand and
        simplify.
        (print_operand): Call it.
        (print_operand_address): Call it.

2018-08-08  Nathan Sidwell  <nathan@acm.org>

        * diagnostic.c (diagnostic_report_current_module): Use
        linemap_included_from & linemap_included_from_linemap.

2018-08-08  Hongbo Zhang  <hongbo.zhang@linaro.org>

        * config/aarch64/aarch64-cores.def: Add phecda core.
        * config/aarch64/aarch64-tune.md: Regenerate.
        * doc/invoke.texi: Add phecda core.

2018-08-08  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR target/85295
        * config/s390/constraints.md ("NxHD0", "NxSD0"): New constraint
        definitions.
        * config/s390/s390.md ("movti"): Add more alternatives for
        constant to GPR copies.

2018-08-08  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c: Fix whitespace damage throughout the file.
        * config/s390/s390.h: Likewise.
        * config/s390/tpf.h: Likewise.

2018-08-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_loadrelative_operand_p):
        Remove TARGET_CPU_ZARCH usages.
        (s390_rtx_costs): Likewise.
        (s390_legitimate_constant_p): Likewise.
        (s390_cannot_force_const_mem): Likewise.
        (legitimate_reload_constant_p): Likewise.
        (s390_preferred_reload_class): Likewise.
        (legitimize_pic_address): Likewise.
        (legitimize_tls_address): Likewise.
        (s390_split_branches): Removed.
        (s390_add_execute): Removed.
        (s390_dump_pool): Remove TARGET_CPU_ZARCH usages.
        (s390_mainpool_start): Likewise.
        (s390_mainpool_finish): Likewise.
        (s390_mainpool_cancel): Removed.
        (s390_chunkify_start): Remove TARGET_CPU_ZARCH usages.
        (s390_chunkify_cancel): Likewise.
        (s390_return_addr_rtx): Likewise.
        (s390_register_info): Remove split_branches_pending_p uages.
        (s390_optimize_register_info): Likewise.
        (s390_init_frame_layout): Remove TARGET_CPU_ZARCH and
        split_branches_pending_p usages.
        (s390_can_eliminate): Remove TARGET_CPU_ZARCH usages.
        (s390_load_got): Likewise.
        (s390_expand_split_stack_prologue): Likewise.
        (output_asm_nops): Likewise.
        (s390_function_profiler): Likewise.
        (s390_emit_call): Likewise.
        (s390_conditional_register_usage): Likewise.
        (s390_optimize_prologue): Likewise.
        (s390_reorg): Remove TARGET_CPU_ZARCH and
        split_branches_pending_p usages.
        (s390_option_override_internal): Remove TARGET_CPU_ZARCH
        usages.
        (s390_output_indirect_thunk_function): Likewise.
        * config/s390/s390.h (TARGET_CPU_ZARCH): Removed.
        (TARGET_CPU_ZARCH_P): Removed.
        (struct machine_function): Remove split_branches_pending_p.
        * config/s390/s390.md: Remove TARGET_CPU_ZARCH usages.

2018-08-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * common/config/s390/s390-common.c (processor_flags_table):
        Remove flags.
        * config.gcc: Remove with_arch/with_tune support.
        * config/s390/2064.md: Remove cpu attribute comparisons.
        * config/s390/driver-native.c (s390_host_detect_local_cpu):
        Remove MTN.
        * config/s390/linux.h (ASM_SPEC):
        Remove -march support.
        * config/s390/s390-c.c (s390_cpu_cpp_builtins_internal):
        Use a table to get an arch level.
        * config/s390/s390-opts.h (enum processor_type):
        Remove enum values.
        * config/s390/s390.c
        (processor_table): Remove entries, add arch_level values.
        (s390_issue_rate): Remove cases.
        (s390_option_override): Adjust
        s390_option_override_internal() call.
        (s390_option_override_internal): Remove deprecation warning.
        (s390_valid_target_attribute_tree): Adjust
        s390_option_override_internal() call.
        * config/s390/s390.h (struct s390_processor):
        Share with s390-c.c, add arch_level field.
        * config/s390/s390.md:
        Remove occurrences in cpu attribute.
        * config/s390/s390.opt: Remove -march/-mtune support.
        * config/s390/tpf.h (ASM_SPEC): Remove -march support.
        * doc/invoke.texi: Remove deprecation warning.

2018-08-08  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.c (qdf24xx_vector_cost): New static
        global.
        (qdf24xx_tunings): Set vector cost structure to
        qdf24xx_vector_cost.

        * config/aarch64/aarch64.c (qdf24xx_addrcost_table)
        <register_sextend>: Set to 3.

2018-08-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/86838
        * config/aarch64/iterators.md (FRECP, frecp_suffix): Delete.
        * config/aarch64/aarch64-simd.md
        (aarch64_frecp<FRECP:frecp_suffix><mode>): Fold FRECPE into...
        (@aarch64_frecpe<mode>): ...here and the move FRECPX to...
        (aarch64_frecpx<mode>): ...this new pattern.
        * config/aarch64/aarch64-simd-builtins.def: Remove comment
        about aarch64_frecp<FRECP:frecp_suffix><mode>.

2018-08-07  Martin Liska  <mliska@suse.cz>

        PR middle-end/83023
        * predict.c (expr_expected_value_1): Handle DECL_IS_MALLOC,
        BUILT_IN_REALLOC and DECL_IS_OPERATOR_NEW.
        * predict.def (PRED_MALLOC_NONNULL): New predictor.
        * doc/extend.texi: Document that malloc attribute adds
        hit to compiler.

2018-08-06  John David Anglin  <danglin@gcc.gnu.org>

        PR target/86785
        * config/pa/pa.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

2018-08-06  Jeff Law  <law@redhat.com>

        * tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Pass down
        the vr_values instance to cprop_into_stmt.
        (cprop_into_stmt): Pass vr_values instance down to cprop_operand.
        (cprop_operand): Also query EVRP to determine if OP is a constant.

2018-08-06  Nathan Sidwell  <nathan@acm.org>

        * diagnostic.c (diagnostic_report_current_module): Reroll
        included-at loop.  Translate text.

2018-08-06  David Malcolm  <dmalcolm@redhat.com>

        * function-tests.c (selftest::test_expansion_to_rtl): Call
        free_after_compilation.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * config/aarch64/aarch64.md: Add clobber highs to tls_desc.

2018-08-06  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (s390_loop_unroll_adjust): Prevent small
        loops with memory block operations from getting unrolled.

2018-08-06  Ulrich Weigand  <uweigand@de.ibm.com>

        PR target/86807
        * config/spu/spu.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

2018-08-06  Jeff Law  <law@redhat.com>

        * reload1.c (forget_old_reloads_1): Adjust CLOBBER_HIGH
        assert.

2018-08-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        PR target/86662
        * gcc/tree.c (build_common_tree_nodes): Initialize integer_types array
        with all enabled __intN types.

        * gcc/testsuite/gcc.target/msp430/pr86662.c: New test.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * alias.c (record_set): Check for clobber high.
        * cfgexpand.c (expand_gimple_stmt): Likewise.
        * combine-stack-adj.c (single_set_for_csa): Likewise.
        * combine.c (find_single_use_1): Likewise.
        (set_nonzero_bits_and_sign_copies): Likewise.
        (get_combine_src_dest): Likewise.
        (is_parallel_of_n_reg_sets): Likewise.
        (try_combine): Likewise.
        (record_dead_and_set_regs_1): Likewise.
        (reg_dead_at_p_1): Likewise.
        (reg_dead_at_p): Likewise.
        * dce.c (deletable_insn_p): Likewise.
        (mark_nonreg_stores_1): Likewise.
        (mark_nonreg_stores_2): Likewise.
        * df-scan.c (df_find_hard_reg_defs): Likewise.
        (df_uses_record): Likewise.
        (df_get_call_refs): Likewise.
        * dwarf2out.c (mem_loc_descriptor): Likewise.
        * haifa-sched.c (haifa_classify_rtx): Likewise.
        * ira-build.c (create_insn_allocnos): Likewise.
        * ira-costs.c (scan_one_insn): Likewise.
        * ira.c (equiv_init_movable_p): Likewise.
        (rtx_moveable_p): Likewise.
        (interesting_dest_for_shprep): Likewise.
        * jump.c (mark_jump_label_1): Likewise.
        * postreload-gcse.c (record_opr_changes): Likewise.
        * postreload.c (reload_cse_simplify): Likewise.
        (struct reg_use): Add source expr.
        (reload_combine): Check for clobber high.
        (reload_combine_note_use): Likewise.
        (reload_cse_move2add): Likewise.
        (move2add_note_store): Likewise.
        * print-rtl.c (print_pattern): Likewise.
        * recog.c (decode_asm_operands): Likewise.
        (store_data_bypass_p): Likewise.
        (if_test_bypass_p): Likewise.
        * regcprop.c (kill_clobbered_value): Likewise.
        (kill_set_value): Likewise.
        * reginfo.c (reg_scan_mark_refs): Likewise.
        * reload1.c (maybe_fix_stack_asms): Likewise.
        (eliminate_regs_1): Likewise.
        (elimination_effects): Likewise.
        (mark_not_eliminable): Likewise.
        (scan_paradoxical_subregs): Likewise.
        (forget_old_reloads_1): Likewise.
        * reorg.c (find_end_label): Likewise.
        (try_merge_delay_insns): Likewise.
        (redundant_insn): Likewise.
        (own_thread_p): Likewise.
        (fill_simple_delay_slots): Likewise.
        (fill_slots_from_thread): Likewise.
        (dbr_schedule): Likewise.
        * resource.c (update_live_status): Likewise.
        (mark_referenced_resources): Likewise.
        (mark_set_resources): Likewise.
        * rtl.c (copy_rtx): Likewise.
        * rtlanal.c (reg_referenced_p): Likewise.
        (single_set_2): Likewise.
        (noop_move_p): Likewise.
        (note_stores): Likewise.
        * sched-deps.c (sched_analyze_reg): Likewise.
        (sched_analyze_insn): Likewise.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * cse.c (invalidate_reg): New function extracted from...
        (invalidate): ...here.
        (canonicalize_insn): Check for clobber high.
        (invalidate_from_clobbers): invalidate clobber highs.
        (invalidate_from_sets_and_clobbers): Likewise.
        (count_reg_usage): Check for clobber high.
        (insn_live_p): Likewise.
        * cselib.c (cselib_expand_value_rtx_1):Likewise.
        (cselib_invalidate_regno): Check for clobber in setter.
        (cselib_invalidate_rtx): Pass through setter.
        (cselib_invalidate_rtx_note_stores):
        (cselib_process_insn): Check for clobber high.
        * cselib.h (cselib_invalidate_rtx): Add operand.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * lra-eliminations.c (lra_eliminate_regs_1): Check for clobber high.
        (mark_not_eliminable): Likewise.
        * lra-int.h (struct lra_insn_reg): Add clobber high marker.
        * lra-lives.c (process_bb_lives): Check for clobber high.
        * lra.c (new_insn_reg): Remember clobber highs.
        (collect_non_operand_hard_regs): Check for clobber high.
        (lra_set_insn_recog_data): Likewise.
        (add_regs_to_insn_regno_info): Likewise.
        (lra_update_insn_regno_info): Likewise.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * rtl.h (reg_is_clobbered_by_clobber_high): Add declarations.
        * rtlanal.c (reg_is_clobbered_by_clobber_high): Add function.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * emit-rtl.c (verify_rtx_sharing): Check for CLOBBER_HIGH.
        (copy_insn_1): Likewise.
        (gen_hard_reg_clobber_high): New gen function.
        * genconfig.c (walk_insn_part): Check for CLOBBER_HIGH.
        * genemit.c (gen_exp): Likewise.
        (gen_emit_seq): Pass through info.
        (gen_insn): Check for CLOBBER_HIGH.
        (gen_expand): Pass through info.
        (gen_split): Likewise.
        (output_add_clobbers): Likewise.
        * genrecog.c (validate_pattern): Check for CLOBBER_HIGH.
        (remove_clobbers): Likewise.
        * rtl.h (gen_hard_reg_clobber_high): New declaration.

2018-08-06  Alan Hayward  <alan.hayward@arm.com>

        * doc/rtl.texi (clobber_high): Add.
        (parallel): Add in clobber high
        * rtl.c (rtl_check_failed_code3): Add function.
        * rtl.def (CLOBBER_HIGH): Add expression.
        * rtl.h (RTL_CHECKC3): Add macro.
        (rtl_check_failed_code3): Add declaration.
        (XC3EXP): Add macro.

2018-08-05  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/86386
        * config/i386/i386.c (ix86_finalize_stack_frame_flags): Set
        cfun->machine->max_used_stack_alignment if needed.

2018-08-04  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86571
        * gimple-ssa-sprintf.c (format_floating): Extend upper bound of
        NaN output to 4.

2018-08-03  Sandra Loosemore  <sandra@codesourcery.com>

        PR target/86799
        * config/nios2/nios2.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define.

2018-08-03  Jeff Law  <law@redhat.com>

        PR target/86795
        * config/mn10300/mn10300.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

2018-08-03  David Malcolm  <dmalcolm@redhat.com>

        * doc/gcov.texi (-x): Remove duplicate "to".
        * doc/invoke.texi (-Wnoexcept-type): Remove duplicate "calls".
        (-Wif-not-aligned): Remove duplicate "is".
        (-flto): Remove duplicate "the".
        (MicroBlaze Options): In examples of "-mcpu=cpu-type", remove
        duplicate "v5.00.b".
        (MSP430 Options): Remove duplicate "and" from the description
        of "-mgprel-sec=regexp".
        (x86 Options): Remove duplicate copies of "vmldLog102" and
        vmlsLog104 from description of "-mveclibabi=type".

2018-08-03  Richard Sandiford  <richard.sandiford@arm.com>

        * internal-fn.h (first_commutative_argument): Declare.
        * internal-fn.c (first_commutative_argument): New function.
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Remove extra
        restrictions for pattern statements.  Use first_commutative_argument
        to look for commutative operands in calls to internal functions.

2018-08-03  Aldy Hernandez  <aldyh@redhat.com>

        * Makefile.in (wide-int-range.o): New.
        * tree-vrp.c: Move all the wide_int_* functions to...
        * wide-int-range.cc: ...here.
        * tree-vrp.h: Move all the wide_int_* prototypes to...
        * wide-int-range.h: ...here.

2018-08-03  Tom de Vries  <tdevries@suse.de>

        * common/config/nvptx/nvptx-common.c (nvptx_except_unwind_info): Return
        UI_NONE.
        * config/nvptx/nvptx.c (TARGET_ASM_BYTE_OP): Remove define.
        * except.c (output_function_exception_table): Do early exit if
        targetm_common.except_unwind_info (&global_options) == UI_NONE.

2018-08-03  Martin Liska  <mliska@suse.cz>

        * predict.c (dump_prediction): Change to 2 digits
        in fraction part.

2018-08-03  Siddhesh Poyarekar  <siddhesh@sourceware.org>

        * config/aarch64/falkor.md (falkor_am_1_vxvy_vxvy): Move
        neon_dup_q to...
        (falkor_am_1_gtov_gtov): ... a new insn reservation.

2018-07-19  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/nds32/nds32.c (nds32_hard_regno_mode_ok): Replace > with >=.
        * df-problems.c (df_remove_dead_eq_notes): Replace > with >=.
        * dwarf2out.c (mem_loc_descriptor): Replace > with >=.
        * lra-constraints.c (spill_hard_reg_in_range): Replace <= with <.
        * lra-remat.c (call_used_input_regno_present_p): Replace <= with <.

2018-08-02  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic-show-locus.c (diagnostic_show_locus): Use
        pp_take_prefix when saving the existing prefix.
        * diagnostic.c (diagnostic_append_note): Likewise.
        * langhooks.c (lhd_print_error_function): Likewise.
        * pretty-print.c (pp_set_prefix): Drop the "const" from "prefix"
        param's type.  Free the existing prefix.
        (pp_take_prefix): New function.
        (pretty_printer::pretty_printer): Drop the prefix parameter.
        Rename the length parameter to match the comment.
        (pretty_printer::~pretty_printer): Free the prefix.
        * pretty-print.h (pretty_printer::pretty_printer): Drop the prefix
        parameter.
        (struct pretty_printer): Drop the "const" from "prefix" field's
        type and clarify memory management.
        (pp_set_prefix): Drop the "const" from the 2nd param.
        (pp_take_prefix): New decl.

2018-08-02  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (select_block_compare_mode): Move test
        for word_mode_ok here instead of passing as argument.
        (expand_block_compare): Change select_block_compare_mode() call.
        (expand_strncmp_gpr_sequence): New function.
        (expand_strn_compare): Make use of expand_strncmp_gpr_sequence.

2018-08-02  Jeff Law  <law@redhat.com>

        PR target/86790
        * config/m68k/m68k.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86784
        * config/h8300/h8300.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

2018-08-02  Tom de Vries  <tdevries@suse.de>

        PR target/86660
        * common/config/nvptx/nvptx-common.c (nvptx_except_unwind_info): New
        function.  Return UI_TARGET unconditionally.
        (TARGET_EXCEPT_UNWIND_INFO): Redefine to nvptx_except_unwind_info.
        * config/nvptx/nvptx.c (TARGET_ASM_BYTE_OP): Emit commented out '.byte'.

2018-08-02  Richard Sandiford  <richard.sandiford@arm.com>

        * genemit.c (print_overload_test): Fix typo.

2018-08-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86816
        * tree-ssa-tail-merge.c (tail_merge_valueize): New function
        which checks for value availability before querying it.
        (gvn_uses_equal): Use it.
        (same_succ_hash): Likewise.
        (gimple_equal_p): Likewise.

2018-08-02  Nick Clifton  <nickc@redhat.com>

        PR target/86813
        * config/stormy16/stormy16.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86810
        * config/v850/v850.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86810
        * config/v850/v850.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86803
        * config/rx/rx.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86797
        * config/msp430/msp430.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86791
        * config/mcore/mcore.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86789
        * config/m32r/m32r.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86787
        * config/iq2000/iq2000.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
        Define to speculation_safe_value_not_needed.

        PR target/86782
        * config/frv/frv.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define to
        speculation_safe_value_not_needed.

        PR target/86781
        * config/fr30/fr30.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define
        to speculation_safe_value_not_needed.

2018-08-02  Richard Sandiford  <richard.sandiford@arm.com>

        * doc/md.texi: Expand the documentation of instruction names
        to mention port-local uses.  Document '@' in pattern names.
        * read-md.h (overloaded_instance, overloaded_name): New structs.
        (mapping): Declare.
        (md_reader::handle_overloaded_name): New member function.
        (md_reader::get_overloads): Likewise.
        (md_reader::m_first_overload): New member variable.
        (md_reader::m_next_overload_ptr): Likewise.
        (md_reader::m_overloads_htab): Likewise.
        * read-md.c (md_reader::md_reader): Initialize m_first_overload,
        m_next_overload_ptr and m_overloads_htab.
        * read-rtl.c (iterator_group): Add "type" and "get_c_token" fields.
        (get_mode_token, get_code_token, get_int_token): New functions.
        (map_attr_string): Add an optional argument that passes back
        the associated iterator.
        (overloaded_name_hash, overloaded_name_eq_p, named_rtx_p):
        (md_reader::handle_overloaded_name, add_overload_instance): New
        functions.
        (apply_iterators): Handle '@' names.  Report an error if '@'
        is used without iterators.
        (initialize_iterators): Initialize the new iterator_group fields.
        * genopinit.c (handle_overloaded_code_for)
        (handle_overloaded_gen): New functions.
        (main): Use them to print declarations of maybe_code_for_* and
        maybe_gen_* functions, and inline definitions of code_for_* and gen_*.
        * genemit.c (print_overload_arguments, print_overload_test)
        (handle_overloaded_code_for, handle_overloaded_gen): New functions.
        (main): Use it to print definitions of maybe_code_for_* and
        maybe_gen_* functions.
        * config/aarch64/aarch64.c (aarch64_split_128bit_move): Use
        gen_aarch64_mov{low,high}_di and gen_aarch64_movdi_{low,high}
        instead of explicit mode checks.
        (aarch64_split_simd_combine): Likewise gen_aarch64_simd_combine.
        (aarch64_split_simd_move): Likewise gen_aarch64_split_simd_mov.
        (aarch64_emit_load_exclusive): Likewise gen_aarch64_load_exclusive.
        (aarch64_emit_store_exclusive): Likewise gen_aarch64_store_exclusive.
        (aarch64_expand_compare_and_swap): Likewise
        gen_aarch64_compare_and_swap and gen_aarch64_compare_and_swap_lse
        (aarch64_gen_atomic_cas): Likewise gen_aarch64_atomic_cas.
        (aarch64_emit_atomic_swap): Likewise gen_aarch64_atomic_swp.
        (aarch64_constant_pool_reload_icode): Delete.
        (aarch64_secondary_reload): Use code_for_aarch64_reload_movcp
        instead of aarch64_constant_pool_reload_icode.  Use
        code_for_aarch64_reload_mov instead of explicit mode checks.
        (rsqrte_type, get_rsqrte_type, rsqrts_type, get_rsqrts_type): Delete.
        (aarch64_emit_approx_sqrt): Use gen_aarch64_rsqrte instead of
        get_rsqrte_type and gen_aarch64_rsqrts instead of gen_rqrts_type.
        (recpe_type, get_recpe_type, recps_type, get_recps_type): Delete.
        (aarch64_emit_approx_div): Use gen_aarch64_frecpe instead of
        get_recpe_type and gen_aarch64_frecps instead of get_recps_type.
        (aarch64_atomic_load_op_code): Delete.
        (aarch64_emit_atomic_load_op): Likewise.
        (aarch64_gen_atomic_ldop): Use UNSPECV_ATOMIC_* instead of
        aarch64_atomic_load_op_code.  Use gen_aarch64_atomic_load
        instead of aarch64_emit_atomic_load_op.
        * config/aarch64/aarch64.md (aarch64_reload_movcp<GPF_TF:mode><P:mode>)
        (aarch64_reload_movcp<VALL:mode><P:mode>, aarch64_reload_mov<mode>)
        (aarch64_movdi_<mode>low, aarch64_movdi_<mode>high)
        (aarch64_mov<mode>high_di, aarch64_mov<mode>low_di): Add a '@'
        character before the pattern name.
        * config/aarch64/aarch64-simd.md (aarch64_split_simd_mov<mode>)
        (aarch64_rsqrte<mode>, aarch64_rsqrts<mode>)
        (aarch64_simd_combine<mode>, aarch64_frecpe<mode>)
        (aarch64_frecps<mode>): Likewise.
        * config/aarch64/atomics.md (atomic_compare_and_swap<mode>)
        (aarch64_compare_and_swap<mode>, aarch64_compare_and_swap<mode>_lse)
        (aarch64_load_exclusive<mode>, aarch64_store_exclusive<mode>)
        (aarch64_atomic_swp<mode>, aarch64_atomic_cas<mode>)
        (aarch64_atomic_load<atomic_ldop><mode>): Likewise.

2018-08-02  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (aarch64_float_const_representable_p):
        Allow HFmode constants if TARGET_FP_F16INST.

2018-08-02  Jackson Woodruff  <jackson.woodruff@arm.com>

        PR target/86014
        * config/aarch64/aarch64.c (aarch64_operands_adjust_ok_for_ldpstp):
        No longer check last store for clobber of address register.

2018-08-02  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/86817
        * gcov.c (process_all_functions): New function.
        (main): Call it.
        (process_file): Move functions processing to
        process_all_functions.

2018-08-02  David Malcolm  <dmalcolm@redhat.com>

        * dumpfile.c (dump_user_location_t::dump_user_location_t): Add
        "const" to the "gimple *" and "rtx_insn *" parameters.
        * dumpfile.h (dump_user_location_t::dump_user_location_t):
        Likewise.
        (dump_location_t::dump_location_t): Likewise.

2018-08-01  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86650
        * gimple-pretty-print.c (percent_G_format): Accept a "gimple *"
        rather than a "gcall *".  Directly pass the data of interest
        to percent_K_format, rather than building a temporary CALL_EXPR
        to hold it.
        * gimple-fold.c (gimple_fold_builtin_strncpy): Adjust.
        (gimple_fold_builtin_strncat): Adjust.
        * gimple-ssa-warn-restrict.h (check_bounds_or_overlap): Replace
        gcall* argument with gimple*.
        * gimple-ssa-warn-restrict.c (check_call): Same.
        (wrestrict_dom_walker::before_dom_children): Same.
        (builtin_access::builtin_access): Same.
        (check_bounds_or_overlap): Same
        (maybe_diag_overlap): Same.
        (maybe_diag_offset_bounds): Same.
        * tree-diagnostic.c (default_tree_printer): Move usage of
        EXPR_LOCATION (t) and TREE_BLOCK (t) from within percent_K_format
        to this callsite.
        * tree-pretty-print.c (percent_K_format): Add argument.
        * tree-pretty-print.h: Add argument.
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Adjust.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Adjust.
        (maybe_diag_stxncpy_trunc): Same.
        (handle_builtin_stxncpy): Same.
        (handle_builtin_strcat): Same.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * match.pd: Optimise pointer range checks.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86758
        * tree-vect-stmts.c (vectorizable_simd_clone_call): Don't try
        to remove pattern statements.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Use the
        result of dfs_enumerate_from when constructing stmt_vec_infos,
        instead of additionally calling get_loop_body.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_create_data_ref_ptr): Remove inv_p
        parameter.
        * tree-vect-data-refs.c (vect_create_data_ref_ptr): Likewise.
        When creating an iv, assert that the step is not known to be zero.
        (vect_setup_realignment): Update call accordingly.
        * tree-vect-stmts.c (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.  Handle VMAT_INVARIANT separately.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_stmt_to_vectorize): New function.
        * tree-vect-loop.c (vect_update_vf_for_slp): Use it.
        (vectorizable_reduction): Likewise.
        * tree-vect-slp.c (vect_analyze_slp_instance): Likewise.
        (vect_detect_hybrid_slp_stmts): Likewise.
        * tree-vect-stmts.c (vect_is_simple_use): Likewise.

2018-08-01  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp (zero_nonzero_bits_from_bounds): Rename to...
        (wide_int_set_zero_nonzero_bits): ...this.
        (zero_nonzero_bits_from_vr): Rename to...
        (vrp_set_zero_nonzero_bits): ...this.
        (extract_range_from_multiplicative_op_1): Abstract wide int
        code...
        (wide_int_range_multiplicative_op): ...here.
        (extract_range_from_binary_expr_1): Extract wide int binary
        operations into their own functions.
        (wide_int_range_lshift): New.
        (wide_int_range_can_optimize_bit_op): New.
        (wide_int_range_shift_undefined_p): New.
        (wide_int_range_bit_xor): New.
        (wide_int_range_bit_ior): New.
        (wide_int_range_bit_and): New.
        (wide_int_range_trunc_mod): New.
        (extract_range_into_wide_ints): New.
        (vrp_shift_undefined_p): New.
        (extract_range_from_multiplicative_op): New.
        (vrp_can_optimize_bit_op): New.
        * tree-vrp.h (value_range::dump): New.
        (wide_int_range_multiplicative_op): New.
        (wide_int_range_lshift):New.
        (wide_int_range_shift_undefined_p): New.
        (wide_int_range_bit_xor): New.
        (wide_int_range_bit_ior): New.
        (wide_int_range_bit_and): New.
        (wide_int_range_trunc_mod): New.
        (zero_nonzero_bits_from_bounds): Rename to...
        (wide_int_set_zero_nonzero_bits): ...this.
        (zero_nonzero_bits_from_vr): Rename to...
        (vrp_set_zero_nonzero_bits): ...this.
        (range_easy_mask_min_max): Rename to...
        (wide_int_range_can_optimize_bit_op): this.
        * vr-values.c (simplify_bit_ops_using_ranges): Rename
        zero_nonzero_bits_from_vr into vrp_set_zero_nonzero_bits.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_orig_stmt): New function.
        * tree-vect-data-refs.c (vect_preserves_scalar_order_p): Use it.
        * tree-vect-loop.c (vect_model_reduction_cost): Likewise.
        (vect_create_epilog_for_reduction): Likewise.
        (vectorizable_live_operation): Likewise.
        * tree-vect-slp.c (vect_find_last_scalar_stmt_in_slp): Likewise.
        (vect_detect_hybrid_slp_stmts, vect_schedule_slp): Likewise.
        * tree-vect-stmts.c (vectorizable_call): Likewise.
        (vectorizable_simd_clone_call, vect_remove_stores): Likewise.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_transform_stmt): Remove grouped_store
        argument.
        * tree-vect-stmts.c (vect_transform_stmt): Likewise.
        * tree-vect-loop.c (vect_transform_loop_stmt): Update call accordingly.
        (vect_transform_loop): Likewise.
        * tree-vect-slp.c (vect_schedule_slp_instance): Likewise.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_schedule_slp): Return void.
        * tree-vect-slp.c (vect_schedule_slp_instance): Likewise.
        (vect_schedule_slp): Likewise.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_transform_loop_stmt): Remove slp_scheduled
        argument.
        (vect_transform_loop): Update calls accordingly.  Schedule SLP
        instances before the main loop, if any exist.

2018-08-01  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86749
        * tree-vect-patterns.c (vect_determine_min_output_precision_1):
        If the lhs is used in a COND_EXPR, check that it is being used
        as the "then" or "else" value.

2018-08-01  Tom de Vries  <tdevries@suse.de>

        PR target/86800
        * config/nvptx/nvptx.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define to
        speculation_safe_value_not_needed.

2018-08-01  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (visit_phi): Compare invariant addresses
        as base and offset.

2018-08-01  Martin Liska  <mliska@suse.cz>

        * value-prof.c (gimple_divmod_fixed_value_transform): Unify
        format how successful transformation is dumped.
        (gimple_mod_pow2_value_transform): Likewise.
        (gimple_mod_subtract_transform): Likewise.
        (gimple_stringops_transform): Likewise.

2018-08-01  Martin Liska  <mliska@suse.cz>

        PR value-prof/35543
        * value-prof.c (interesting_stringop_to_profile_p):
        Simplify the code and add BUILT_IN_MEMMOVE.
        (gimple_stringops_transform): Likewise.

2018-08-01  Sam Tebbs  <sam.tebbs@arm.com>

        * config/aarch64/aarch64-simd.md
        (*aarch64_get_lane_zero_extendsi<mode>): Rename to...
        (*aarch64_get_lane_zero_extend<GPI:mode><VDQQH:mode>): ... This and
        use GPI iterator instead of SI mode.

2018-08-01  Richard Earnshaw  <rearnsha@arm.com>

        * config/rs6000/rs6000.md (speculation_barrier): Renamed from
        rs6000_speculation_barrier.
        * config/rs6000/rs6000.c (rs6000_expand_builtin): Adjust for
        new barrier pattern name.

2018-08-01  Richard Earnshaw  <rearnsha@arm.com>

        * config/i386/i386.md (unspecv): Add UNSPECV_SPECULATION_BARRIER.
        (speculation_barrier): New insn.

2018-08-01  Richard Biener  <rguenther@suse.de>

        PR bootstrap/86724
        * graphite.h: Include isl/id.h and isl/space.h to allow build
        with ISL 0.20.

2018-08-01  Jan Willem Jagersma  <jwjagersma@gmail.com>

        PR target/86651
        * dwarf2out.c (dwarf2out_early_finish): Do not generate assembly in LTO
        mode for COFF targets.
        * defaults.h (TARGET_COFF): Define.
        * config/i386/djgpp.h (TARGET_ASM_LTO_START, TARGET_ASM_LTO_END,
        TARGET_COFF): Define.
        (i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): Declare.
        * config/i386/djgpp.c (saved_debug_info_level): New static variable.
        (i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): New functions.

2018-07-31  Alexandre Oliva <oliva@adacore.com>

        * gimple-streamer-in.c (input_bb): Restore BB discriminator.
        * gimple-streamer-out.c (output_bb): Save it.
        * lto-streamer-in.c (input_struct_function_base): Restore
        instance discriminator if available.  Create map on demand.
        * lto-streamer-out.c (output_struct_function_base): Save it if
        available.
        * final.c (decl_to_instance_map): Document LTO strategy.

2018-07-31  Alexandre Oliva  <oliva@adacore.com>
            Olivier Hainque  <hainque@adacore.com>

        * debug.h (decl_to_instance_map_t): New type.
        (decl_to_instance_map): Declare.
        (maybe_create_decl_to_instance_map): New inline function.
        * final.c (bb_discriminator, last_bb_discriminator): New statics,
        to track basic block discriminators.
        (final_start_function_1): Initialize them.
        (final_scan_insn_1): On NOTE_INSN_BASIC_BLOCK, track
        bb_discriminator.
        (decl_to_instance_map): New variable.
        (map_decl_to_instance, maybe_set_discriminator): New functions.
        (notice_source_line): Set discriminator.

2018-07-31  Ian Lance Taylor  <iant@golang.org>

        * targhooks.c (default_have_speculation_safe_value): Add
        ATTRIBUTE_UNUSED.

2018-07-31  David Malcolm  <dmalcolm@redhat.com>

        * dump-context.h: Include "pretty-print.h".
        (dump_context::refresh_dumps_are_enabled): New decl.
        (dump_context::emit_item): New decl.
        (class dump_context): Add fields "m_test_pp" and
        "m_test_pp_flags".
        (temp_dump_context::temp_dump_context): Add param "test_pp_flags".
        (temp_dump_context::get_dumped_text): New decl.
        (class temp_dump_context): Add field "m_pp".
        * dumpfile.c (refresh_dumps_are_enabled): Convert to...
        (dump_context::refresh_dumps_are_enabled): ...and add a test for
        m_test_pp.
        (set_dump_file): Update for above change.
        (set_alt_dump_file): Likewise.
        (dump_loc): New overload, taking a pretty_printer *.
        (dump_context::dump_loc): Call end_any_optinfo.  Dump the location
        to any test pretty-printer.
        (make_item_for_dump_gimple_stmt): New function, adapted from
        optinfo::add_gimple_stmt.
        (dump_context::dump_gimple_stmt): Call it, and use the result,
        eliminating the direct usage of dump_file and alt_dump_file in
        favor of indirectly using them via emit_item.
        (make_item_for_dump_gimple_expr): New function, adapted from
        optinfo::add_gimple_expr.
        (dump_context::dump_gimple_expr): Call it, and use the result,
        eliminating the direct usage of dump_file and alt_dump_file in
        favor of indirectly using them via emit_item.
        (make_item_for_dump_generic_expr): New function, adapted from
        optinfo::add_tree.
        (dump_context::dump_generic_expr): Call it, and use the result,
        eliminating the direct usage of dump_file and alt_dump_file in
        favor of indirectly using them via emit_item.
        (make_item_for_dump_printf_va): New function, adapted from
        optinfo::add_printf_va.
        (make_item_for_dump_printf): New function.
        (dump_context::dump_printf_va): Call make_item_for_dump_printf_va,
        and use the result, eliminating the direct usage of dump_file and
        alt_dump_file in favor of indirectly using them via emit_item.
        (make_item_for_dump_dec): New function.
        (dump_context::dump_dec): Call it, and use the result,
        eliminating the direct usage of dump_file and alt_dump_file in
        favor of indirectly using them via emit_item.
        (make_item_for_dump_symtab_node): New function, adapted from
        optinfo::add_symtab_node.
        (dump_context::dump_symtab_node): Call it, and use the result,
        eliminating the direct usage of dump_file and alt_dump_file in
        favor of indirectly using them via emit_item.
        (dump_context::begin_scope): Reimplement, avoiding direct usage
        of dump_file and alt_dump_file in favor of indirectly using them
        via emit_item.
        (dump_context::emit_item): New member function.
        (temp_dump_context::temp_dump_context): Add param "test_pp_flags".
        Set up test pretty-printer on the underlying context.  Call
        refresh_dumps_are_enabled.
        (temp_dump_context::~temp_dump_context): Call
        refresh_dumps_are_enabled.
        (temp_dump_context::get_dumped_text): New member function.
        (selftest::verify_dumped_text): New function.
        (ASSERT_DUMPED_TEXT_EQ): New macro.
        (selftest::test_capture_of_dump_calls): Run all tests twice, with
        and then without optinfo enabled.  Add uses of
        ASSERT_DUMPED_TEXT_EQ to all tests.  Add test of nested scopes.
        * dumpfile.h: Update comment for the dump_* API.
        * optinfo-emit-json.cc
        (selftest::test_building_json_from_dump_calls): Update for new
        param for temp_dump_context ctor.
        * optinfo.cc (optinfo_item::optinfo_item): Remove "owned" param
        and "m_owned" field.
        (optinfo_item::~optinfo_item): Likewise.
        (optinfo::add_item): New member function.
        (optinfo::emit): Update comment.
        (optinfo::add_string): Delete.
        (optinfo::add_printf): Delete.
        (optinfo::add_printf_va): Delete.
        (optinfo::add_gimple_stmt): Delete.
        (optinfo::add_gimple_expr): Delete.
        (optinfo::add_tree): Delete.
        (optinfo::add_symtab_node): Delete.
        (optinfo::add_dec): Delete.
        * optinfo.h (class dump_context): New forward decl.
        (optinfo::add_item): New decl.
        (optinfo::add_string): Delete.
        (optinfo::add_printf): Delete.
        (optinfo::add_printf_va): Delete.
        (optinfo::add_gimple_stmt): Delete.
        (optinfo::add_gimple_expr): Delete.
        (optinfo::add_tree): Delete.
        (optinfo::add_symtab_node): Delete.
        (optinfo::add_dec): Delete.
        (optinfo::add_poly_int): Delete.
        (optinfo_item::optinfo_item): Remove "owned" param.
        (class optinfo_item): Remove field "m_owned".

2018-07-31  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        PR middle-end/86705
        * gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
        MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
        requested variable alignment.
        (expand_one_ssa_partition): Likewise.
        (expand_one_var): Likewise.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/pdp11/pdp11.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Redefine
        to speculation_safe_value_not_needed.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * targhooks.h (speculation_safe_value_not_needed): New prototype.
        * targhooks.c (speculation_safe_value_not_needed): New function.
        * target.def (have_speculation_safe_value): Update documentation.
        * doc/tm.texi: Regenerated.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/aarch64/iterators.md (ALLI_TI): New iterator.
        * config/aarch64/aarch64.md (despeculate_copy<ALLI_TI:mode>): New
        expand.
        (despeculate_copy<ALLI:mode>_insn): New insn.
        (despeculate_copyti_insn): New insn.
        (despeculate_simple<ALLI:mode>): New insn
        (despeculate_simpleti): New insn.
        * config/aarch64/aarch64.c (aarch64_speculation_safe_value): New
        function.
        (TARGET_SPECULATION_SAFE_VALUE): Redefine to
        aarch64_speculation_safe_value.
        (aarch64_print_operand): Handle const0_rtx in modifier 'H'.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/aarch64/aarch64-speculation.cc: New file.
        * config/aarch64/aarch64-passes.def (pass_track_speculation): Add
        before pass_reorder_blocks.
        * config/aarch64/aarch64-protos.h (make_pass_track_speculation): Add
        prototype.
        * config/aarch64/aarch64.c (aarch64_conditional_register_usage): Fix
        X14 and X15 when tracking speculation.
        * config/aarch64/aarch64.md (register name constants): Add
        SPECULATION_TRACKER_REGNUM and SPECULATION_SCRATCH_REGNUM.
        (unspec): Add UNSPEC_SPECULATION_TRACKER.
        (speculation_barrier): New insn attribute.
        (cmp<mode>): Allow SP in comparisons.
        (speculation_tracker): New insn.
        (speculation_barrier): Add speculation_barrier attribute.
        * config/aarch64/t-aarch64: Add make rule for aarch64-speculation.o.
        * config.gcc (aarch64*-*-*): Add aarch64-speculation.o to extra_objs.
        * doc/invoke.texi (AArch64 Options): Document -mtrack-speculation.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/aarch64/aarch64.md (cb<optab><mode>1): Disable when
        aarch64_track_speculation is true.
        (tb<optab><mode>1): Likewise.
        * config/aarch64/aarch64.c (aarch64_split_compare_regs): Do not
        generate CB[N]Z when tracking speculation.
        (aarch64_split_compare_and_swap): Likewise.
        (aarch64_split_atomic_op): Likewise.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/aarch64/aarch64.opt (mtrack-speculation): New target option.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/aarch64.md (unspecv): Add UNSPECV_SPECULAION_BARRIER.
        (speculation_barrier): New insn.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * config/arm/unspecs.md (unspecv): Add VUNSPEC_SPECULATION_BARRIER.
        * config/arm/arm.md (speculation_barrier): New expand.
        (speculation_barrier_insn): New pattern.

2018-07-31  Richard Earnshaw  <rearnsha@arm.com>

        * builtin-types.def (BT_FN_PTR_PTR_VAR): New function type.
        (BT_FN_I1_I1_VAR, BT_FN_I2_I2_VAR, BT_FN_I4_I4_VAR): Likewise.
        (BT_FN_I8_I8_VAR, BT_FN_I16_I16_VAR): Likewise.
        * builtin-attrs.def (ATTR_NOVOPS_NOTHROW_LEAF_LIST): New attribute
        list.
        * builtins.def (BUILT_IN_SPECULATION_SAFE_VALUE_N): New builtin.
        (BUILT_IN_SPECULATION_SAFE_VALUE_PTR): New internal builtin.
        (BUILT_IN_SPECULATION_SAFE_VALUE_1): Likewise.
        (BUILT_IN_SPECULATION_SAFE_VALUE_2): Likewise.
        (BUILT_IN_SPECULATION_SAFE_VALUE_4): Likewise.
        (BUILT_IN_SPECULATION_SAFE_VALUE_8): Likewise.
        (BUILT_IN_SPECULATION_SAFE_VALUE_16): Likewise.
        * builtins.c (expand_speculation_safe_value): New function.
        (expand_builtin): Call it.
        * doc/cpp.texi: Document predefine __HAVE_SPECULATION_SAFE_VALUE.
        * doc/extend.texi: Document __builtin_speculation_safe_value.
        * doc/md.texi: Document "speculation_barrier" pattern.
        * doc/tm.texi.in: Pull in TARGET_SPECULATION_SAFE_VALUE and
        TARGET_HAVE_SPECULATION_SAFE_VALUE.
        * doc/tm.texi: Regenerated.
        * target.def (have_speculation_safe_value, speculation_safe_value): New
        hooks.
        * targhooks.c (default_have_speculation_safe_value): New function.
        (default_speculation_safe_value): New function.
        * targhooks.h (default_have_speculation_safe_value): Add prototype.
        (default_speculation_safe_value): Add prototype.

2018-07-31  David Malcolm  <dmalcolm@redhat.com>

        * dump-context.h (dump_context::dump_loc): New decl.
        * dumpfile.c (dump_context::dump_loc): New member function.
        (dump_context::dump_gimple_stmt_loc): Reimplement using dump_loc
        and dump_gimple_stmt.
        (dump_context::dump_gimple_expr_loc): Likewise, using
        dump_gimple_expr.
        (dump_context::dump_generic_expr_loc): Likewise, using
        dump_generic_expr.
        (dump_context::dump_printf_loc_va): Likewise, using
        dump_printf_va.
        (dump_context::begin_scope): Explicitly using the global function
        "dump_loc", rather than the member function.

2018-07-31  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86741
        * tree-vrp.c (vrp_prop::check_mem_ref): Avoid incomplete types.

2018-07-31  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (s390_expand_setmem): Make the unrolling to
        depend on whether prefetch instructions will be emitted or not.
        Use TARGET_SETMEM_PFD for checking whether prefetch instructions
        will be emitted or not.
        * config/s390/s390.h (TARGET_SETMEM_PREFETCH_DISTANCE)
        (TARGET_SETMEM_PFD): New macros.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (stmt_vec_info): Turn back into a typedef.
        (NULL_STMT_VEC_INFO): Delete.
        (stmt_vec_info::operator*): Likewise.
        (stmt_vec_info::operator gimple *): Likewise.
        * tree-vect-loop.c (vectorizable_reduction): Use NULL instead
        of NULL_STMT_VEC_INFO.
        * tree-vect-patterns.c (vect_init_pattern_stmt): Likewise.
        (vect_reassociating_reduction_p): Likewise.
        * tree-vect-stmts.c (vect_build_gather_load_calls): Likewise.
        (vectorizable_store): Likewise.
        * tree-vectorizer.c (vec_info::set_vinfo_for_stmt): Likewise.
        (vec_info::free_stmt_vec_infos): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_stmt_in_region_p): Delete.
        * tree-vectorizer.c (vect_stmt_in_region_p): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::new_vinfo_for_stmt)
        (vec_info::set_vinfo_for_stmt, vec_info::free_stmt_vec_infos)
        (vec_info::free_stmt_vec_info): New private member functions.
        (set_stmt_vec_info_vec, free_stmt_vec_infos, vinfo_for_stmt)
        (set_vinfo_for_stmt, new_stmt_vec_info, free_stmt_vec_info): Delete.
        * tree-parloops.c (gather_scalar_reductions): Remove calls to
        set_stmt_vec_info_vec and free_stmt_vec_infos.
        * tree-vect-loop.c (_loop_vec_info): Remove call to
        set_stmt_vec_info_vec.
        * tree-vect-stmts.c (new_stmt_vec_info, set_stmt_vec_info_vec)
        (free_stmt_vec_infos, free_stmt_vec_info): Delete in favor of...
        * tree-vectorizer.c (vec_info::new_stmt_vec_info)
        (vec_info::set_vinfo_for_stmt, vec_info::free_stmt_vec_infos)
        (vec_info::free_stmt_vec_info): ...these new functions.  Remove
        assignments in {vec_info::,}new_stmt_vec_info that are redundant
        with the clearing in the xcalloc.
        (stmt_vec_info_vec): Delete.
        (vec_info::vec_info): Don't call set_stmt_vec_info_vec.
        (vectorize_loops): Likewise.
        (vec_info::~vec_info): Remove argument from call to
        free_stmt_vec_infos.
        (vec_info::add_stmt): Remove vinfo argument from call to
        new_stmt_vec_info.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (free_stmt_vec_info): Take a stmt_vec_info
        rather than a gimple stmt.
        * tree-vect-stmts.c (free_stmt_vec_info): Likewise.  Don't free
        information for pattern statements when passed the original
        statement; instead wait to be passed the pattern statement itself.
        Don't call set_vinfo_for_stmt here.
        (free_stmt_vec_infos): Update call to free_stmt_vec_info.
        * tree-vect-loop.c (_loop_vec_info::~loop_vec_info): Don't free
        stmt_vec_infos here.
        * tree-vect-slp.c (_bb_vec_info::~bb_vec_info): Likewise.
        * tree-vectorizer.c (vec_info::remove_stmt): Nullify the statement's
        stmt_vec_infos entry.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::replace_stmt): Declare.
        * tree-vectorizer.c (vec_info::replace_stmt): New function.
        * tree-vect-slp.c (vect_remove_slp_scalar_calls): Use it.
        * tree-vect-stmts.c (vectorizable_call): Likewise.
        (vectorizable_simd_clone_call): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::remove_stmt): Declare.
        * tree-vectorizer.c (vec_info::remove_stmt): New function.
        * tree-vect-loop-manip.c (vect_set_loop_condition): Use it.
        * tree-vect-loop.c (vect_transform_loop): Likewise.
        * tree-vect-slp.c (vect_schedule_slp): Likewise.
        * tree-vect-stmts.c (vect_remove_stores): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::lookup_dr): New member function.
        (vect_dr_stmt): Delete.
        * tree-vectorizer.c (vec_info::lookup_dr): New function.
        * tree-vect-loop-manip.c (vect_update_inits_of_drs): Use it instead
        of DR_VECT_AUX.
        * tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr)
        (vect_analyze_data_ref_dependence, vect_record_base_alignments)
        (vect_verify_datarefs_alignment, vect_peeling_supportable)
        (vect_analyze_data_ref_accesses, vect_prune_runtime_alias_test_list)
        (vect_analyze_data_refs): Likewise.
        (vect_slp_analyze_data_ref_dependence): Likewise.  Take a vec_info
        argument.
        (vect_find_same_alignment_drs): Likewise.
        (vect_slp_analyze_node_dependences): Update calls accordingly.
        (vect_analyze_data_refs_alignment): Likewise.  Use vec_info::lookup_dr
        instead of DR_VECT_AUX.
        (vect_get_peeling_costs_all_drs): Take a loop_vec_info instead
        of a vector data references.  Use vec_info::lookup_dr instead of
        DR_VECT_AUX.
        (vect_peeling_hash_get_lowest_cost): Update calls accordingly.
        (vect_enhance_data_refs_alignment): Likewise.  Use vec_info::lookup_dr
        instead of DR_VECT_AUX.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_loop_vec_info::unaligned_dr): Change to
        dr_vec_info.
        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Update
        accordingly.
        * tree-vect-loop.c (vect_analyze_loop_2): Likewise.
        * tree-vect-loop-manip.c (get_misalign_in_elems): Likewise.
        (vect_gen_prolog_loop_niters): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (set_dr_misalignment, dr_misalignment)
        (DR_TARGET_ALIGNMENT, aligned_access_p, known_alignment_for_access_p)
        (vect_known_alignment_in_bytes, vect_dr_behavior)
        (vect_get_scalar_dr_size): Take references as dr_vec_infos
        instead of data_references.  Update calls to other routines for
        which the same change has been made.
        * tree-vect-data-refs.c (vect_preserves_scalar_order_p): Take
        dr_vec_infos instead of stmt_vec_infos.
        (vect_analyze_data_ref_dependence): Update call accordingly.
        (vect_slp_analyze_data_ref_dependence)
        (vect_record_base_alignments): Use DR_VECT_AUX.
        (vect_calculate_target_alignment, vect_compute_data_ref_alignment)
        (vect_update_misalignment_for_peel, verify_data_ref_alignment)
        (vector_alignment_reachable_p, vect_get_data_access_cost)
        (vect_peeling_supportable, vect_analyze_group_access_1)
        (vect_analyze_group_access, vect_analyze_data_ref_access)
        (vect_vfa_segment_size, vect_vfa_access_size, vect_vfa_align)
        (vect_compile_time_alias, vect_small_gap_p)
        (vectorizable_with_step_bound_p, vect_duplicate_ssa_name_ptr_info):
        (vect_supportable_dr_alignment): Take references as dr_vec_infos
        instead of data_references.  Update calls to other routines for
        which the same change has been made.
        (vect_verify_datarefs_alignment, vect_get_peeling_costs_all_drs)
        (vect_find_same_alignment_drs, vect_analyze_data_refs_alignment)
        (vect_slp_analyze_and_verify_node_alignment)
        (vect_analyze_data_ref_accesses, vect_prune_runtime_alias_test_list)
        (vect_create_addr_base_for_vector_ref, vect_create_data_ref_ptr)
        (vect_setup_realignment): Use dr_vec_infos.  Update calls after
        above changes.
        (_vect_peel_info::dr): Replace with...
        (_vect_peel_info::dr_info): ...this new field.
        (vect_peeling_hash_get_most_frequent)
        (vect_peeling_hash_choose_best_peeling): Update accordingly.
        (vect_peeling_hash_get_lowest_cost):
        (vect_enhance_data_refs_alignment): Likewise.  Update calls to other
        routines for which the same change has been made.
        (vect_peeling_hash_insert): Likewise.  Take a dr_vec_info instead of a
        data_reference.
        * tree-vect-loop-manip.c (get_misalign_in_elems)
        (vect_gen_prolog_loop_niters): Use dr_vec_infos.  Update calls after
        above changes.
        * tree-vect-loop.c (vect_analyze_loop_2): Likewise.
        * tree-vect-stmts.c (vect_get_store_cost, vect_get_load_cost)
        (vect_truncate_gather_scatter_offset, compare_step_with_zero)
        (get_group_load_store_type, get_negative_load_store_type)
        (vect_get_data_ptr_increment, vectorizable_store)
        (vectorizable_load): Likewise.
        (ensure_base_align): Take a dr_vec_info instead of a data_reference.
        Update calls to other routines for which the same change has been made.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::move_dr): New member function.
        (dataref_aux): Rename to...
        (dr_vec_info): ...this and add "dr" and "stmt" fields.
        (_stmt_vec_info::dr_aux): Update accordingly.
        (_stmt_vec_info::data_ref_info): Delete.
        (STMT_VINFO_GROUPED_ACCESS, DR_GROUP_FIRST_ELEMENT)
        (DR_GROUP_NEXT_ELEMENT, DR_GROUP_SIZE, DR_GROUP_STORE_COUNT)
        (DR_GROUP_GAP, DR_GROUP_SAME_DR_STMT, REDUC_GROUP_FIRST_ELEMENT):
        (REDUC_GROUP_NEXT_ELEMENT, REDUC_GROUP_SIZE): Use dr_aux.dr instead
        of data_ref.
        (STMT_VINFO_DATA_REF): Likewise.  Turn into an lvalue.
        (STMT_VINFO_DR_INFO): New macro.
        (DR_VECT_AUX): Use STMT_VINFO_DR_INKFO and vect_dr_stmt.
        (set_dr_misalignment): Update after rename of dataref_aux.
        (vect_dr_stmt): Move earlier in file.  Return dr_aux.stmt.
        * tree-vect-stmts.c (new_stmt_vec_info): Remove redundant
        initialization of STMT_VINFO_DATA_REF.
        * tree-vectorizer.c (vec_info::move_dr): New function.
        * tree-vect-patterns.c (vect_recog_bool_pattern)
        (vect_recog_mask_conversion_pattern)
        (vect_recog_gather_scatter_pattern): Use it.
        * tree-vect-data-refs.c (vect_analyze_data_refs): Initialize
        the "dr" and "stmt" fields of dr_vec_info instead of
        STMT_VINFO_DATA_REF.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info::pattern_stmt_p): New field.
        (is_pattern_stmt_p): Use it.
        * tree-vect-patterns.c (vect_init_pattern_stmt): Set pattern_stmt_p
        on pattern statements.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_mark_pattern_stmts): Take the
        original stmt as a stmt_vec_info rather than a gimple stmt.
        (vect_pattern_recog_1): Take the statement directly as a
        stmt_vec_info, rather than via a gimple_stmt_iterator.
        Update call to vect_mark_pattern_stmts.
        (vect_pattern_recog): Update calls accordingly.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_get_vec_defs_for_stmt_copy)
        (vect_get_vec_def_for_stmt_copy): Take a vec_info rather than
        a vect_def_type for the first argument.
        * tree-vect-stmts.c (vect_get_vec_defs_for_stmt_copy): Likewise.
        (vect_get_vec_def_for_stmt_copy): Likewise.  Return the original
        operand if it isn't defined by a vectorized statement.
        (vect_build_gather_load_calls): Remove the mask_dt argument and
        update calls to vect_get_vec_def_for_stmt_copy.
        (vectorizable_bswap): Likewise the dt argument.
        (vectorizable_call): Update calls to vectorizable_bswap and
        vect_get_vec_def_for_stmt_copy.
        (vectorizable_simd_clone_call, vectorizable_assignment)
        (vectorizable_shift, vectorizable_operation, vectorizable_condition)
        (vectorizable_comparison): Update calls to
        vect_get_vec_def_for_stmt_copy.
        (vectorizable_store): Likewise.  Remove now-unnecessary calls to
        vect_is_simple_use.
        (vect_get_loop_based_defs): Remove dt argument and update call
        to vect_get_vec_def_for_stmt_copy.
        (vectorizable_conversion): Update calls to vect_get_loop_based_defs
        and vect_get_vec_def_for_stmt_copy.
        (vectorizable_load): Update calls to vect_build_gather_load_calls
        and vect_get_vec_def_for_stmt_copy.
        * tree-vect-loop.c (vect_create_epilog_for_reduction)
        (vectorizable_reduction, vectorizable_live_operation): Update calls
        to vect_get_vec_def_for_stmt_copy.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_record_base_alignment): Replace vec_info
        and gimple stmt arguments with a stmt_vec_info.
        (vect_record_base_alignments): Update calls accordingly.
        * tree-vect-slp.c (vect_record_max_nunits): Replace vec_info
        and gimple stmt arguments with a stmt_vec_info.
        (vect_build_slp_tree_1): Remove vinfo argument and update call
        to vect_record_max_nunits.
        (vect_build_slp_tree_2): Update calls to vect_build_slp_tree_1
        and vect_record_max_nunits.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (nested_in_vect_loop_p): Move further down
        file and take a stmt_vec_info instead of a gimple stmt.
        (supportable_widening_operation, vect_finish_replace_stmt)
        (vect_finish_stmt_generation, vect_get_store_rhs)
        (vect_get_vec_def_for_operand_1, vect_get_vec_def_for_operand)
        (vect_get_vec_defs, vect_init_vector, vect_transform_stmt)
        (vect_remove_stores, vect_analyze_stmt, vectorizable_condition)
        (vect_get_smallest_scalar_type, vect_check_gather_scatter)
        (vect_create_data_ref_ptr, bump_vector_ptr)
        (vect_permute_store_chain, vect_setup_realignment)
        (vect_transform_grouped_load, vect_record_grouped_load_vectors)
        (vect_create_addr_base_for_vector_ref, vectorizable_live_operation)
        (vectorizable_reduction, vectorizable_induction)
        (get_initial_def_for_reduction, is_simple_and_all_uses_invariant)
        (vect_get_place_in_interleaving_chain): Take stmt_vec_infos rather
        than gimple stmts as arguments.
        * tree-vect-data-refs.c (vect_get_smallest_scalar_type)
        (vect_preserves_scalar_order_p, vect_slp_analyze_node_dependences)
        (can_group_stmts_p, vect_check_gather_scatter)
        (vect_create_addr_base_for_vector_ref, vect_create_data_ref_ptr)
        (bump_vector_ptr, vect_permute_store_chain, vect_setup_realignment)
        (vect_permute_load_chain, vect_shift_permute_load_chain)
        (vect_transform_grouped_load)
        (vect_record_grouped_load_vectors): Likewise.
        * tree-vect-loop.c (vect_fixup_reduc_chain)
        (get_initial_def_for_reduction, vect_create_epilog_for_reduction)
        (vectorize_fold_left_reduction, is_nonwrapping_integer_induction)
        (vectorizable_reduction, vectorizable_induction)
        (vectorizable_live_operation, vect_loop_kill_debug_uses): Likewise.
        * tree-vect-patterns.c (type_conversion_p, adjust_bool_stmts)
        (vect_get_load_store_mask): Likewise.
        * tree-vect-slp.c (vect_get_place_in_interleaving_chain)
        (vect_analyze_slp_instance, vect_mask_constant_operand_p): Likewise.
        * tree-vect-stmts.c (vect_mark_relevant)
        (is_simple_and_all_uses_invariant)
        (exist_non_indexing_operands_for_use_p, process_use)
        (vect_init_vector_1, vect_init_vector, vect_get_vec_def_for_operand_1)
        (vect_get_vec_def_for_operand, vect_get_vec_defs)
        (vect_finish_stmt_generation_1, vect_finish_replace_stmt)
        (vect_finish_stmt_generation, vect_truncate_gather_scatter_offset)
        (compare_step_with_zero, vect_get_store_rhs, get_group_load_store_type)
        (get_negative_load_store_type, get_load_store_type)
        (vect_check_load_store_mask, vect_check_store_rhs)
        (vect_build_gather_load_calls, vect_get_strided_load_store_ops)
        (vectorizable_bswap, vectorizable_call, vectorizable_simd_clone_call)
        (vect_create_vectorized_demotion_stmts, vectorizable_conversion)
        (vectorizable_assignment, vectorizable_shift, vectorizable_operation)
        (get_group_alias_ptr_type, vectorizable_store, hoist_defs_of_uses)
        (vectorizable_load, vectorizable_condition, vectorizable_comparison)
        (vect_analyze_stmt, vect_transform_stmt, vect_remove_stores)
        (supportable_widening_operation): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_describe_gather_scatter_call): Take
        a stmt_vec_info instead of a gcall.
        (vect_check_gather_scatter): Update call accordingly.
        * tree-vect-loop-manip.c (iv_phi_p): Take a stmt_vec_info instead
        of a gphi.
        (vect_can_advance_ivs_p, vect_update_ivs_after_vectorizer)
        (slpeel_update_phi_nodes_for_loops):): Update calls accordingly.
        * tree-vect-loop.c (vect_transform_loop_stmt): Take a stmt_vec_info
        instead of a gimple stmt.
        (vect_transform_loop): Update calls accordingly.
        * tree-vect-slp.c (vect_split_slp_store_group): Take and return
        stmt_vec_infos instead of gimple stmts.
        (vect_analyze_slp_instance): Update use accordingly.
        * tree-vect-stmts.c (read_vector_array, write_vector_array)
        (vect_clobber_variable, vect_stmt_relevant_p, permute_vec_elements)
        (vect_use_strided_gather_scatters_p, vect_build_all_ones_mask)
        (vect_build_zero_merge_argument, vect_get_gather_scatter_ops)
        (vect_gen_widened_results_half, vect_get_loop_based_defs)
        (vect_create_vectorized_promotion_stmts, can_vectorize_live_stmts):
        Take a stmt_vec_info instead of a gimple stmt and pass stmt_vec_infos
        down to subroutines.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_analyze_scalar_cycles_1): Change the type
        of the worklist from a vector of gimple stmts to a vector of
        stmt_vec_infos.
        * tree-vect-stmts.c (vect_mark_relevant, process_use)
        (vect_mark_stmts_to_be_vectorized): Likewise

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_analyze_loop_operations): Look up the
        statement before passing it to vect_analyze_stmt.
        (vect_create_epilog_for_reduction): Use a stmt_vec_info to walk
        the chain of phi vector definitions.  Track the exit phi via its
        stmt_vec_info.
        (vectorizable_reduction): Set cond_stmt_vinfo directly from the
        STMT_VINFO_REDUC_DEF.
        * tree-vect-slp.c (vect_get_place_in_interleaving_chain): Use
        stmt_vec_infos to handle the statement chains.
        (vect_get_slp_defs): Record the first statement in the node
        using a stmt_vec_info.
        * tree-vect-stmts.c (vect_mark_stmts_to_be_vectorized): Look up
        statements here and pass their stmt_vec_info down to subroutines.
        (vect_init_vector_1): Hoist call to vinfo_for_stmt and pass it
        down to vect_finish_stmt_generation.
        (vect_init_vector, vect_get_vec_defs, vect_finish_replace_stmt)
        (vect_finish_stmt_generation): Call vinfo_for_stmt and pass
        stmt_vec_infos to subroutines.
        (vect_remove_stores): Use stmt_vec_infos to handle the statement
        chains.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_slp_analyze_node_dependences):
        (vect_check_gather_scatter, vect_create_data_ref_ptr, bump_vector_ptr)
        (vect_permute_store_chain, vect_setup_realignment)
        (vect_permute_load_chain, vect_shift_permute_load_chain)
        (vect_transform_grouped_load): Use stmt_vec_info rather than gimple
        stmts internally, and when passing values to other vectorizer routines.
        * tree-vect-loop-manip.c (vect_can_advance_ivs_p): Likewise.
        * tree-vect-loop.c (vect_analyze_scalar_cycles_1)
        (vect_analyze_loop_operations, get_initial_def_for_reduction)
        (vect_create_epilog_for_reduction, vectorize_fold_left_reduction)
        (vectorizable_reduction, vectorizable_induction)
        (vectorizable_live_operation, vect_transform_loop_stmt)
        (vect_transform_loop): Likewise.
        * tree-vect-patterns.c (vect_reassociating_reduction_p)
        (vect_recog_widen_op_pattern, vect_recog_mixed_size_cond_pattern)
        (vect_recog_bool_pattern, vect_recog_gather_scatter_pattern): Likewise.
        * tree-vect-slp.c (vect_analyze_slp_instance): Likewise.
        (vect_slp_analyze_node_operations_1): Likewise.
        * tree-vect-stmts.c (vect_mark_relevant, process_use)
        (exist_non_indexing_operands_for_use_p, vect_init_vector_1)
        (vect_mark_stmts_to_be_vectorized, vect_get_vec_def_for_operand)
        (vect_finish_stmt_generation_1, get_group_load_store_type)
        (get_load_store_type, vect_build_gather_load_calls)
        (vectorizable_bswap, vectorizable_call, vectorizable_simd_clone_call)
        (vect_create_vectorized_demotion_stmts, vectorizable_conversion)
        (vectorizable_assignment, vectorizable_shift, vectorizable_operation)
        (vectorizable_store, vectorizable_load, vectorizable_condition)
        (vectorizable_comparison, vect_analyze_stmt, vect_transform_stmt)
        (supportable_widening_operation): Likewise.
        (vect_get_vector_types_for_stmt): Likewise.
        * tree-vectorizer.h (vect_dr_behavior): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence)
        (vect_slp_analyze_node_dependences, vect_analyze_data_ref_accesses)
        (vect_permute_store_chain, vect_permute_load_chain)
        (vect_shift_permute_load_chain, vect_transform_grouped_load): Avoid
        repeated stmt_vec_info lookups.
        * tree-vect-loop-manip.c (vect_can_advance_ivs_p): Likewise.
        (vect_update_ivs_after_vectorizer): Likewise.
        * tree-vect-loop.c (vect_is_simple_reduction): Likewise.
        (vect_create_epilog_for_reduction, vectorizable_reduction): Likewise.
        * tree-vect-patterns.c (adjust_bool_stmts): Likewise.
        * tree-vect-slp.c (vect_analyze_slp_instance): Likewise.
        (vect_bb_slp_scalar_cost): Likewise.
        * tree-vect-stmts.c (get_group_alias_ptr_type): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_check_gather_scatter): Pass the
        gcall rather than the generic gimple stmt to gimple_call_internal_fn.
        (vect_get_smallest_scalar_type, can_group_stmts_p): Use dyn_cast
        to get gassigns and gcalls, rather than operating on generc gimple
        stmts.
        * tree-vect-stmts.c (exist_non_indexing_operands_for_use_p)
        (vect_mark_stmts_to_be_vectorized, vectorizable_store)
        (vectorizable_load, vect_analyze_stmt): Likewise.
        * tree-vect-loop.c (vectorizable_reduction): Likewise gphi.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (get_earlier_stmt, get_later_stmt): Take and
        return stmt_vec_infos rather than gimple stmts.  Do not accept
        null arguments.
        (vect_find_last_scalar_stmt_in_slp): Return a stmt_vec_info instead
        of a gimple stmt.
        * tree-vect-slp.c (vect_find_last_scalar_stmt_in_slp): Likewise.
        Update use of get_later_stmt.
        (vect_get_constant_vectors): Update call accordingly.
        (vect_schedule_slp_instance): Likewise
        * tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Likewise.
        (vect_slp_analyze_instance_dependence): Likewise.
        (vect_preserves_scalar_order_p): Update use of get_earlier_stmt.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (stmt_info_for_cost::stmt): Replace with...
        (stmt_info_for_cost::stmt_info): ...this new field.
        (add_stmt_costs): Update accordingly.
        * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost)
        (vect_get_known_peeling_cost): Likewise.
        (vect_estimate_min_profitable_iters): Likewise.
        * tree-vect-stmts.c (record_stmt_cost): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_loop_vec_info::may_misalign_stmts): Change
        from an auto_vec<gimple *> to an auto_vec<stmt_vec_info>.
        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Update
        accordingly.
        * tree-vect-loop-manip.c (vect_create_cond_for_align_checks): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info::same_dr_stmt): Change from
        a gimple stmt to a stmt_vec_info.
        * tree-vect-stmts.c (vectorizable_load): Update accordingly.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::grouped_stores): Change from
        an auto_vec<gimple *> to an auto_vec<stmt_vec_info>.
        (_loop_vec_info::reduction_chains): Likewise.
        * tree-vect-loop.c (vect_fixup_scalar_cycles_with_patterns): Update
        accordingly.
        * tree-vect-slp.c (vect_analyze_slp): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info::first_element): Change from
        a gimple stmt to a stmt_vec_info.
        (_stmt_vec_info::next_element): Likewise.
        * tree-vect-data-refs.c (vect_update_misalignment_for_peel)
        (vect_slp_analyze_and_verify_node_alignment)
        (vect_analyze_group_access_1, vect_analyze_group_access)
        (vect_small_gap_p, vect_prune_runtime_alias_test_list)
        (vect_create_data_ref_ptr, vect_record_grouped_load_vectors)
        (vect_supportable_dr_alignment): Update accordingly.
        * tree-vect-loop.c (vect_fixup_reduc_chain): Likewise.
        (vect_fixup_scalar_cycles_with_patterns, vect_is_slp_reduction)
        (vect_is_simple_reduction, vectorizable_reduction): Likewise.
        * tree-vect-patterns.c (vect_reassociating_reduction_p): Likewise.
        * tree-vect-slp.c (vect_build_slp_tree_1)
        (vect_attempt_slp_rearrange_stmts, vect_supported_load_permutation_p)
        (vect_split_slp_store_group, vect_analyze_slp_instance)
        (vect_analyze_slp, vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (vect_model_store_cost, vect_model_load_cost)
        (get_group_load_store_type, get_load_store_type)
        (get_group_alias_ptr_type, vectorizable_store, vectorizable_load)
        (vect_transform_stmt, vect_remove_stores): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_dr_stmt): Return a stmt_vec_info rather
        than a gimple stmt.
        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence)
        (vect_slp_analyze_data_ref_dependence, vect_record_base_alignments)
        (vect_calculate_target_alignmentm, vect_compute_data_ref_alignment)
        (vect_update_misalignment_for_peel, vect_verify_datarefs_alignment)
        (vector_alignment_reachable_p, vect_get_data_access_cost)
        (vect_get_peeling_costs_all_drs, vect_peeling_hash_get_lowest_cost)
        (vect_peeling_supportable, vect_enhance_data_refs_alignment)
        (vect_find_same_alignment_drs, vect_analyze_data_refs_alignment)
        (vect_analyze_group_access_1, vect_analyze_group_access)
        (vect_analyze_data_ref_access, vect_analyze_data_ref_accesses)
        (vect_vfa_access_size, vect_small_gap_p, vect_analyze_data_refs)
        (vect_supportable_dr_alignment): Remove vinfo_for_stmt from the
        result of vect_dr_stmt and use the stmt_vec_info instead of
        the associated gimple stmt.
        * tree-vect-loop-manip.c (get_misalign_in_elems): Likewise.
        (vect_gen_prolog_loop_niters): Likewise.
        * tree-vect-loop.c (vect_analyze_loop_2): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_slp_tree::stmts): Change from a vec<gimple *>
        to a vec<stmt_vec_info>.
        * tree-vect-slp.c (vect_free_slp_tree): Update accordingly.
        (vect_create_new_slp_node): Take a vec<gimple *> instead of a
        vec<stmt_vec_info>.
        (_slp_oprnd_info::def_stmts): Change from a vec<gimple *>
        to a vec<stmt_vec_info>.
        (bst_traits::value_type, bst_traits::value_type): Likewise.
        (bst_traits::hash): Update accordingly.
        (vect_get_and_check_slp_defs): Change the stmts parameter from
        a vec<gimple *> to a vec<stmt_vec_info>.
        (vect_two_operations_perm_ok_p, vect_build_slp_tree_1): Likewise.
        (vect_build_slp_tree): Likewise.
        (vect_build_slp_tree_2): Likewise.  Update uses of
        SLP_TREE_SCALAR_STMTS.
        (vect_print_slp_tree): Update uses of SLP_TREE_SCALAR_STMTS.
        (vect_mark_slp_stmts, vect_mark_slp_stmts_relevant)
        (vect_slp_rearrange_stmts, vect_attempt_slp_rearrange_stmts)
        (vect_supported_load_permutation_p, vect_find_last_scalar_stmt_in_slp)
        (vect_detect_hybrid_slp_stmts, vect_slp_analyze_node_operations_1)
        (vect_slp_analyze_node_operations, vect_slp_analyze_operations)
        (vect_bb_slp_scalar_cost, vect_slp_analyze_bb_1)
        (vect_get_constant_vectors, vect_get_slp_defs)
        (vect_transform_slp_perm_load, vect_schedule_slp_instance)
        (vect_remove_slp_scalar_calls, vect_schedule_slp): Likewise.
        (vect_analyze_slp_instance): Build up a vec of stmt_vec_infos
        instead of gimple stmts.
        * tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Change
        the stores parameter for a vec<gimple *> to a vec<stmt_vec_info>.
        (vect_slp_analyze_instance_dependence): Update uses of
        SLP_TREE_SCALAR_STMTS.
        (vect_slp_analyze_and_verify_node_alignment): Likewise.
        (vect_slp_analyze_and_verify_instance_alignment): Likewise.
        * tree-vect-loop.c (neutral_op_for_slp_reduction): Likewise.
        (get_initial_defs_for_reduction): Likewise.
        (vect_create_epilog_for_reduction): Likewise.
        (vectorize_fold_left_reduction): Likewise.
        * tree-vect-stmts.c (vect_prologue_cost_for_slp_op): Likewise.
        (vect_model_simple_cost, vectorizable_shift, vectorizable_load)
        (can_vectorize_live_stmts): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_loop_vec_info::reductions): Change from an
        auto_vec<gimple *> to an auto_vec<stmt_vec_info>.
        (vect_force_simple_reduction): Take and return stmt_vec_infos rather
        than gimple stmts.
        * tree-parloops.c (valid_reduction_p): Take a stmt_vec_info instead
        of a gimple stmt.
        (gather_scalar_reductions): Update after above interface changes.
        * tree-vect-loop.c (vect_analyze_scalar_cycles_1): Likewise.
        (vect_is_simple_reduction): Take and return stmt_vec_infos rather
        than gimple stmts.
        (vect_force_simple_reduction): Likewise.
        * tree-vect-patterns.c (vect_pattern_recog_1): Update use of
        LOOP_VINFO_REDUCTIONS.
        * tree-vect-slp.c (vect_analyze_slp_instance): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info::reduc_def): Change from
        a gimple stmt to a stmt_vec_info.
        * tree-vect-loop.c (vect_active_double_reduction_p)
        (vect_force_simple_reduction, vectorizable_reduction): Update
        accordingly.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_slp_tree::vec_stmts): Change from a
        vec<gimple *> to a vec<stmt_vec_info>.
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Change
        the reduction_phis argument from a vec<gimple *> to a
        vec<stmt_vec_info>.
        (vectorizable_reduction): Likewise the phis local variable that
        is passed to vect_create_epilog_for_reduction.  Update for new type
        of SLP_TREE_VEC_STMTS.
        (vectorizable_induction): Update for new type of SLP_TREE_VEC_STMTS.
        (vectorizable_live_operation): Likewise.
        * tree-vect-slp.c (vect_get_slp_vect_defs): Likewise.
        (vect_transform_slp_perm_load, vect_schedule_slp_instance): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info::vectorized_stmt): Change from
        a gimple stmt to a stmt_vec_info.
        (vectorizable_condition, vectorizable_live_operation)
        (vectorizable_reduction, vectorizable_induction): Pass back the
        vectorized statement as a stmt_vec_info.
        * tree-vect-data-refs.c (vect_record_grouped_load_vectors): Update
        use of STMT_VINFO_VEC_STMT.
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Likewise,
        accumulating the inner phis that feed the STMT_VINFO_VEC_STMT
        as stmt_vec_infos rather than gimple stmts.
        (vectorize_fold_left_reduction): Change vec_stmt from a gimple stmt
        to a stmt_vec_info.
        (vectorizable_live_operation): Likewise.
        (vectorizable_reduction, vectorizable_induction): Likewise,
        updating use of STMT_VINFO_VEC_STMT.
        * tree-vect-stmts.c (vect_get_vec_def_for_operand_1): Update use
        of STMT_VINFO_VEC_STMT.
        (vect_build_gather_load_calls, vectorizable_bswap, vectorizable_call)
        (vectorizable_simd_clone_call, vectorizable_conversion)
        (vectorizable_assignment, vectorizable_shift, vectorizable_operation)
        (vectorizable_store, vectorizable_load, vectorizable_condition)
        (vectorizable_comparison, can_vectorize_live_stmts): Change vec_stmt
        from a gimple stmt to a stmt_vec_info.
        (vect_transform_stmt): Update use of STMT_VINFO_VEC_STMT.  Pass a
        pointer to a stmt_vec_info to the vectorizable_* routines.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info::related_stmt): Change from
        a gimple stmt to a stmt_vec_info.
        (is_pattern_stmt_p): Update accordingly.
        * tree-vect-data-refs.c (vect_preserves_scalar_order_p): Likewise.
        (vect_record_grouped_load_vectors): Likewise.
        * tree-vect-loop.c (vect_determine_vf_for_stmt): Likewise.
        (vect_fixup_reduc_chain, vect_update_vf_for_slp): Likewise.
        (vect_model_reduction_cost): Likewise.
        (vect_create_epilog_for_reduction): Likewise.
        (vectorizable_reduction, vectorizable_induction): Likewise.
        * tree-vect-patterns.c (vect_init_pattern_stmt): Likewise.
        Return the stmt_vec_info for the pattern statement.
        (vect_set_pattern_stmt): Update use of STMT_VINFO_RELATED_STMT.
        (vect_split_statement, vect_mark_pattern_stmts): Likewise.
        * tree-vect-slp.c (vect_detect_hybrid_slp_stmts): Likewise.
        (vect_detect_hybrid_slp, vect_get_slp_defs): Likewise.
        * tree-vect-stmts.c (vect_mark_relevant): Likewise.
        (vect_get_vec_def_for_operand_1, vectorizable_call): Likewise.
        (vectorizable_simd_clone_call, vect_analyze_stmt, new_stmt_vec_info)
        (free_stmt_vec_info, vect_is_simple_use): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_finish_replace_stmt): Return a stmt_vec_info
        (vect_finish_stmt_generation): Likewise.
        * tree-vect-stmts.c (vect_finish_stmt_generation_1): Likewise.
        (vect_finish_replace_stmt, vect_finish_stmt_generation): Likewise.
        (vect_build_gather_load_calls): Use the return value of the above
        functions instead of a separate call to vinfo_for_stmt.  Use narrow
        scopes for the input gimple stmt and wider scopes for the associated
        stmt_vec_info.  Use vec_info::lookup_def when setting these
        stmt_vec_infos from an SSA_NAME definition.
        (vectorizable_bswap, vectorizable_call, vectorizable_simd_clone_call)
        (vect_create_vectorized_demotion_stmts, vectorizable_conversion)
        (vectorizable_assignment, vectorizable_shift, vectorizable_operation)
        (vectorizable_store, vectorizable_load, vectorizable_condition)
        (vectorizable_comparison): Likewise.
        * tree-vect-loop.c (vectorize_fold_left_reduction): Likewise.
        (vectorizable_reduction): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_is_simple_use): Add an optional
        stmt_vec_info * parameter before the optional gimple **.
        * tree-vect-stmts.c (vect_is_simple_use): Likewise.
        (process_use, vect_get_vec_def_for_operand_1): Update callers.
        (vect_get_vec_def_for_operand, vectorizable_shift): Likewise.
        * tree-vect-loop.c (vectorizable_reduction): Likewise.
        (vectorizable_live_operation): Likewise.
        * tree-vect-patterns.c (type_conversion_p): Likewise.
        (vect_look_through_possible_promotion): Likewise.
        (vect_recog_rotate_pattern): Likewise.
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (stmt_vec_info): Temporarily change from
        a typedef to a wrapper class.
        (NULL_STMT_VEC_INFO): New macro.
        (vec_info::stmt_infos): Change to vec<stmt_vec_info>.
        (stmt_vec_info::operator*): New function.
        (stmt_vec_info::operator gimple *): Likewise.
        (set_vinfo_for_stmt): Use NULL_STMT_VEC_INFO.
        (add_stmt_costs): Likewise.
        * tree-vect-loop-manip.c (iv_phi_p): Likewise.
        * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost)
        (vect_get_known_peeling_cost): Likewise.
        (vect_estimate_min_profitable_iters): Likewise.
        * tree-vect-patterns.c (vect_init_pattern_stmt): Likewise.
        * tree-vect-slp.c (vect_remove_slp_scalar_calls): Likewise.
        * tree-vect-stmts.c (vect_build_gather_load_calls): Likewise.
        (vectorizable_store, free_stmt_vec_infos): Likewise.
        (new_stmt_vec_info): Change return type of xcalloc to
        _stmt_vec_info *.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::lookup_single_use): Declare.
        * tree-vectorizer.c (vec_info::lookup_single_use): New function.
        * tree-vect-loop.c (vectorizable_reduction): Use it instead of
        a single_imm_use-based sequence.
        * tree-vect-stmts.c (supportable_widening_operation): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::lookup_def): Declare.
        * tree-vectorizer.c (vec_info::lookup_def): New function.
        * tree-vect-patterns.c (vect_get_internal_def): Use it.
        (vect_widened_op_tree): Likewise.
        * tree-vect-stmts.c (vect_is_simple_use): Likewise.
        * tree-vect-loop.c (vect_analyze_loop_operations): Likewise.
        (vectorizable_reduction): Likewise.
        (vect_valid_reduction_input_p): Take a stmt_vec_info instead
        of a gimple *.
        (vect_is_slp_reduction): Update calls accordingly.  Use
        vec_info::lookup_def.
        (vect_is_simple_reduction): Likewise
        * tree-vect-slp.c (vect_detect_hybrid_slp_1): Use vec_info::lookup_def.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vec_info::lookup_stmt): Declare.
        * tree-vectorizer.c (vec_info::lookup_stmt): New function.
        * tree-vect-loop.c (vect_determine_vf_for_stmt): Use it instead
        of vinfo_for_stmt.
        (vect_determine_vectorization_factor, vect_analyze_scalar_cycles_1)
        (vect_compute_single_scalar_iteration_cost, vect_analyze_loop_form)
        (vect_update_vf_for_slp, vect_analyze_loop_operations)
        (vect_is_slp_reduction, vectorizable_induction)
        (vect_transform_loop_stmt, vect_transform_loop): Likewise.
        * tree-vect-patterns.c (vect_init_pattern_stmt):
        (vect_determine_min_output_precision_1, vect_determine_precisions)
        (vect_pattern_recog): Likewise.
        * tree-vect-stmts.c (vect_analyze_stmt, vect_transform_stmt): Likewise.
        * config/powerpcspe/powerpcspe.c (rs6000_density_test): Likewise.
        * config/rs6000/rs6000.c (rs6000_density_test): Likewise.
        * tree-vect-slp.c (vect_detect_hybrid_slp_stmts): Likewise.
        (vect_detect_hybrid_slp_1, vect_detect_hybrid_slp_2)
        (vect_detect_hybrid_slp): Likewise.  Change the walk_stmt_info
        info field from a loop to a loop_vec_info.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (stmt_vec_info): Move typedef earlier in file.
        (vec_info::add_stmt): Declare.
        * tree-vectorizer.c (vec_info::add_stmt): New function.
        * tree-vect-data-refs.c (vect_create_data_ref_ptr): Use it.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Likewise.
        (vect_create_epilog_for_reduction, vectorizable_reduction): Likewise.
        (vectorizable_induction): Likewise.
        * tree-vect-slp.c (_bb_vec_info::_bb_vec_info): Likewise.
        * tree-vect-stmts.c (vect_finish_stmt_generation_1): Likewise.
        (vectorizable_simd_clone_call, vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        * tree-vect-patterns.c (vect_init_pattern_stmt): Likewise.
        (vect_recog_bool_pattern, vect_recog_mask_conversion_pattern)
        (vect_recog_gather_scatter_pattern): Likewise.
        (append_pattern_def_seq): Likewise.  Remove a check that is
        performed by add_stmt itself.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vectorizable_reduction): Fix an instance in
        which make_ssa_name was called with new_stmt before new_stmt
        had been created.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vect_valid_reduction_input_p): New function,
        split out from...
        (vect_is_slp_reduction): ...here...
        (vect_is_simple_reduction): ...and here.  Remove repetition of tests
        that are already known to be false.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_free_slp_instance): Add a final_p parameter.
        * tree-vect-slp.c (vect_free_slp_tree): Likewise.  Don't update
        STMT_VINFO_NUM_SLP_USES when it's true.
        (vect_free_slp_instance): Add a final_p parameter and pass it to
        vect_free_slp_tree.
        (vect_build_slp_tree_2): Update call to vect_free_slp_instance.
        (vect_analyze_slp_instance): Likewise.
        (vect_slp_analyze_operations): Likewise.
        (vect_slp_analyze_bb_1): Likewise.
        * tree-vectorizer.c (vec_info): Likewise.
        * tree-vect-loop.c (vect_transform_loop): Likewise.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vectorizable_reduction): Assert that the
        function is not called for second and subsequent members of
        a reduction group.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (get_initial_def_for_reduction): Move special
        cases for nested loops from here to ...
        (vect_create_epilog_for_reduction): ...here.  Only call
        vect_is_simple_use for inner-loop reductions.

2018-07-31  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/85338
        PR gcov-profile/85350
        PR gcov-profile/85372
        * profile.c (struct location_triplet): New.
        (struct location_triplet_hash): Likewise.
        (output_location): Do not output a BB that
        is already recorded for a line.
        (branch_prob): Use streamed_locations.

2018-07-31  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/85370
        * coverage.c (coverage_begin_function): Do not mark target
        clones as artificial functions.

2018-07-31  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83813
        PR gcov-profile/84758
        PR gcov-profile/85217
        PR gcov-profile/85332
        * profile.c (branch_prob): Do not record GOTO expressions
        for GIMPLE statements which locations are already streamed.

2018-07-31  Olivier Hainque  <hainque@adacore.com>

        * gcc.c (handle_spec_function): Accept a soft_matched_part
        argument, as do_spec_1.  Pass it down to ...
        (eval_spec_function): Accept a soft_matched_part argument,
        and pass it down to ...
        (do_spec_2): Accept a soft_matched_part argument, and pass
        it down to do_spec_1.
        (do_spec_1): Pass soft_matched_part to handle_spec_function.
        (handle_braces): Update call to handle_spec_function.
        (driver::set_up_specs): Update calls to do_spec_2.
        (compare_debug_dump_opt_spec_function): Likewise.
        (compare_debug_self_opt_spec_function): Likewise.

2018-07-31  Olivier Hainque  <hainque@adacore.com>

        * common.opt (nolibc): New option.
        * doc/invoke.texi (Link Options): Document it.
        * gcc.c (LINK_GCC_C_SEQUENCE_SPEC): Honor nolibc.
        * config/alpha/linux.h: Likewise.
        * config/arc/elf.h: Likewise.
        * config/arm/uclinux-elf.h: Likewise.
        * config/arm/unknown-elf.h: Likewise.
        * config/avr/avrlibc.h: Likewise.
        * config/bfin/bfin.h: Likewise.
        * config/bfin/linux.h: Likewise.
        * config/bfin/uclinux.h: Likewise.
        * config/darwin.h: Likewise.
        * config/darwin10.h: Likewise.
        * config/darwin12.h: Likewise.
        * config/gnu-user.h: Likewise.
        * config/lm32/uclinux-elf.h: Likewise.
        * config/pa/pa-hpux11.h: Likewise.
        * config/pa/pa64-hpux.h: Likewise.
        * config/sparc/sparc.h: Likewise.

2018-07-31  Olivier Hainque  <hainque@adacore.com>

        * gcc.c (getenv_spec_function): Prepend '/' to value for allowed
        undefined variables.

2018-07-30  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86640
        * config/arm/arm.c (arm_block_set_aligned_vect): Use gen_int_mode
        instead of GEN_INT.

2018-07-30  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * tree-ssa-forwprop.c (simplify_builtin_call): Don't create a not NUL
        terminated string literal.

2018-07-30  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85160
        * combine.c (is_just_move): New function.
        (try_combine): Allow combining two instructions into two if neither of
        the original instructions was a move.

2018-07-30  Alexander Monakov  <amonakov@ispras.ru>

        PR target/86673
        * doc/extend.texi (Global Register Variables): Discourage use of type
        qualifiers.
        (Local Register Variables): Likewise.

2018-07-30  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86506
        * hwint.h (ceil_log2): Resync with hwint.c implementation.

2018-07-30  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/86547
        * lra-constraints.c (spill_hard_reg_in_range): When selecting the
        hard_regno, make sure no insn between `from` and `to` clobbers it.

2018-07-30  Cesar Philippidis  <cesar@codesourcery.com>
            Tom de Vries  <tdevries@suse.de>

        * config/nvptx/nvptx.c (PTX_GANG_DEFAULT): Rename to ...
        (PTX_DEFAULT_RUNTIME_DIM): ... this.
        (nvptx_goacc_validate_dims): Set default worker and gang dims to
        PTX_DEFAULT_RUNTIME_DIM.
        (nvptx_dim_limit): Ignore GOMP_DIM_WORKER.

2018-07-29  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.c (pa_output_addr_vec): Align address table.
        * config/pa/pa.h (JUMP_TABLES_IN_TEXT_SECTION): Revise comment.
        * config/pa/pa32-linux.h (JUMP_TABLES_IN_TEXT_SECTION): Define.

2018-07-27  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/constraints.md (wG constraint): Delete, no longer
        used.
        * config/rs6000/predicates.md (p9_fusion_reg_operand): Rename
        predicate to reflect toc fusion has been deleted.
        (toc_fusion_mem_raw): Delete, no longer used.
        (toc_fusion_mem_wrapped): Likewise.
        * config/rs6000/rs6000-cpus.def (POWERPC_MASKS): Delete toc
        fusion mask bit.
        * config/rs6000/rs6000-protos.h (fusion_wrap_memory_address):
        Delete, no longer used.
        * config/rs6000/rs6000.c (struct rs6000_reg_addr): Delete fields
        meant to be used for toc fusion.
        (rs6000_debug_print_mode): Delete toc fusion debugging.
        (rs6000_debug_reg_global): Likewise.
        (rs6000_init_hard_regno_mode_ok): Delete setting up fields for toc
        fusion and secondary reload support that were never used.
        (rs6000_option_override_internal): Delete TOC fusion, that was only
        partially defined, and it did not work unless you also used the
        -mcmodel= switch.
        (rs6000_legitimate_address_p): Delete TOC fusion support.
        (rs6000_opt_masks): Likewise.
        (fusion_wrap_memory_address): Delete function, no longer used.
        (fusion_split_address); Delete TOC fusion support.
        * config/rs6000/rs6000.h (TARGET_TOC_FUSION_INT): Delete, no
        longer used with toc fusion being deleted.
        (TARGET_TOC_FUSION_FP): Likewise.
        * config/rs6000/rs6000.md (UNSPEC_FUSION_ADDIS): Delete TOC fusion
        UNSPEC.
        (toc fusion spliter): Delete TOC fusion support.
        (toc_fusionload_<mode>): Likewise.
        (toc_fusionload_di): Likewise.
        (fusion_gpr_load_<mode>): Delete generator function, this insn no
        longer needs to be named.  Rename predicate to delete TOC fusion.
        (fusion_gpr_<P:mode>_<GPR_FUSION:mode>_load): Likewise.
        (fusion_gpr_<P:mode>_<GPR_FUSION:mode>_store): Likewise.
        (fusion_vsx_<P:mode>_<GPR_FUSION:mode>_load): Likewise.
        (fusion_vsx_<P:mode>_<GPR_FUSION:mode>_store): Likewise.
        (p9 fusion peephole2s): Rename predicate to delete TOC fusion.

2018-07-27  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (Basic PowerPC Built-in Functions Available on
        ISA 2.05):  Replace __uint128_t with __uint128 and __int128_t with
        __int128 in built-in function prototypes.
        (PowerPC AltiVec Built-in Functions on ISA 2.07): Likewise.
        (PowerPC AltiVec Built-in Functions on ISA 3.0): Likewise.

2018-07-27  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86696
        * tree-ssa-strlen.c (get_min_string_length): Handle all integer
        types, including enums.
        (handle_char_store): Be prepared for the above function to fail.

2018-07-26  Qing Zhao  <qing.zhao@oracle.com>

        * builtins.c (inline_expand_builtin_string_cmp): Disable inlining
        when optimization level is lower than 2 or optimize for size.

2018-07-26  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86043
        PR tree-optimization/86042
        * tree-ssa-strlen.c (handle_builtin_memcpy): Handle strict overlaps.
        (get_string_cst_length): Rename...
        (get_min_string_length): ...to this.  Add argument.
        (handle_char_store): Extend to handle multi-character stores by
        MEM_REF.
        * tree.c (initializer_zerop): Use new argument.  Handle MEM_REF.
        * tree.h (initializer_zerop): Add argument.

2018-07-26  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86660
        * omp-low.c (scan_sharing_clauses): Don't ignore map clauses for
        declare target to variables if they have always,{to,from,tofrom} map
        kinds.

2018-07-26  Martin Liska  <mliska@suse.cz>

        PR lto/86548
        * lto-wrapper.c: Add linker_output as prefix
        for ltrans_output_file.

2018-07-26  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85805
        * combine.c (reg_nonzero_bits_for_combine): Only use the last set
        value for hard registers if that was written in the same mode.

2018-07-26  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/86536
        * gcov.c (format_gcov): Use printf format %.*f directly
        and do not handle special values.

2018-07-25  Claudiu Zissulescu  <claziss@synopsys.com>

        * common/config/arc/arc-common.c (arc_option_optimization_table):
        Update default optimizations for size.

2018-07-25  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (movsf_insn): Add short instruction selection.
        * config/arc/constraints.md (CfZ): New constraint.
        * config/arc/fpu.md (addssf3_fpu): Use CfZ constraint.
        (subsf3_fpu): Likewise.
        (cmpsf_fpu): Likewise.
        (cmpsf_fpu_uneq): Likewise.

2018-07-25  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (compact_memory_operand_p): Check for uncached
        accesses as well.
        (arc_is_uncached_mem_p): uncached applies to both the variable and
        the pointer.

2018-07-25  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.h (ADDITIONAL_REGISTER_NAMES): Add additional
        register names.

2018-07-25  David Malcolm  <dmalcolm@redhat.com>

        * optinfo-emit-json.cc (class optrecord_json_writer): Convert
        field "m_scopes" from vec to auto_vec.

2018-07-25  Martin Liska  <mliska@suse.cz>

        * config/powerpcspe/powerpcspe-protos.h (rs6000_loop_align): Fix
        return type.

2018-07-25  Richard Biener  <rguenther@suse.de>

        PR debug/86654
        * dwarf2out.c (dwarf2out_decl): Do not handle nested functions
        special wrt context_die late.
        (gen_subprogram_die): Re-use DIEs in local scope.

2018-07-25  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86644
        * hwint.c (ceil_log2): Fix comment.  Return 0 for 0.

2018-07-25  Martin Liska  <mliska@suse.cz>

        PR middle-end/86645
        * dumpfile.c: And excluded values with TDF_ALL_VALUES.
        * dumpfile.h (enum dump_flag): Defince TDF_ALL_VALUES.

2018-07-25  Martin Liska  <mliska@suse.cz>

        PR sanitizer/79635
        * params.def: Explain ASan abbreviation and provide
        a documentation link.

2018-07-24  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86622
        PR tree-optimization/86532
        * builtins.h (string_length): Declare.
        * builtins.c (c_strlen): Correct handling of non-constant offsets.
        (check_access): Be prepared for non-constant length ranges.
        (string_length): Make extern.
        * expr.c (string_constant): Only handle the minor non-constant
        array index.  Use string_constant to compute the length of
        a generic string constant.

2018-07-24  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86618
        * tree-vect-stmts.c (vectorizable_call): Don't take the address
        of LOOP_VINFO_MASKS (loop_vinfo) when loop_vinfo is null.

2018-07-24  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/86636
        * json.cc (json::object::set): Fix comment.  Add assertions.
        (json::array::append): Move here from json.h.  Add comment and an
        assertion.
        (json::string::string): Likewise.
        * json.h (json::array::append): Move to json.cc.
        (json::string::string): Likewise.
        * optinfo-emit-json.cc
        (optrecord_json_writer::impl_location_to_json): Assert that we
        aren't attempting to write out UNKNOWN_LOCATION, or an ad-hoc
        wrapper around it.  Expand the location once, rather than three
        times.
        (optrecord_json_writer::inlining_chain_to_json): Fix the check for
        UNKNOWN_LOCATION, to use LOCATION_LOCUS to look through ad-hoc
        wrappers.
        (optrecord_json_writer::optinfo_to_json): Likewise, in four
        places.  Fix some overlong lines.

2018-07-24  Matthew Malcomson  <matthew.malcomson@arm.com>

        * config/aarch64/aarch64-simd.md
        (aarch64_<ANY_EXTEND:su><ADDSUB:optab>w<mode>): Split into...
        (aarch64_<ANY_EXTEND:su>subw<mode>): ... This...
        (aarch64_<ANY_EXTEND:su>addw<mode>): ... And this.
        (aarch64_<ANY_EXTEND:su><ADDSUB:optab>w<mode>_internal): Split into...
        (aarch64_<ANY_EXTEND:su>subw<mode>_internal): ... This...
        (aarch64_<ANY_EXTEND:su>addw<mode>_internal): ... And this.
        (aarch64_<ANY_EXTEND:su><ADDSUB:optab>w2<mode>_internal): Split into...
        (aarch64_<ANY_EXTEND:su>subw2<mode>_internal): ... This...
        (aarch64_<ANY_EXTEND:su>addw2<mode>_internal): ... And this.

2018-07-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86627
        * expmed.c (expand_divmod): Punt if d == HOST_WIDE_INT_MIN
        and size > HOST_BITS_PER_WIDE_INT.  For size > HOST_BITS_PER_WIDE_INT
        and abs_d == d, do the power of two handling if profitable.

2018-07-24  Richard Biener  <rguenther@suse.de>

        * match.pd: Add BIT_FIELD_REF canonicalizations.

2018-07-23  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c/86617
        * genmatch.c (dt_operand::gen_match_op): Avoid folding volatile values.

2018-07-23  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gimple-fold.c (gimple_fold_builtin_printf): Don't create a not NUL
        terminated STRING_CST object.

2018-07-23  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        hsa-dump.c (dump_hsa_symbol): Avoid out of scope access to buf.

2018-07-23  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000-p8swap.c (rtx_is_swappable_p): Adjust.
        * config/rs6000/rs6000-protos.h (rs6000_split_v4si_init): Delete.
        * config/rs6000/rs6000.c (rs6000_expand_vector_init): Always force
        the elements into a register.
        (rs6000_split_v4si_init_di_reg): Delete.
        (rs6000_split_v4si_init): Delete.
        * config/rs6000/vsx.md (unspec): Delete UNSPEC_VSX_VEC_INIT.
        (vsx_init_v4si): Rewrite as a define_expand.

2018-07-23  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (splitters for rldimi and rlwimi with the
        zero_extend argument from memory): New.

2018-07-22  Martin Sebor  <msebor@redhat.com>

        PR bootstrap/86621
        * gimple-ssa-warn-alloca.c (alloca_call_type_by_arg): Avoid
        diagnosing calls with unknown arguments unless -Walloca-larger-than
        is restricted to less than PTRDIFF_MAX bytes.

2018-07-22  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/gcov.texi (Invoking Gcov): Editorial changes.

2018-07-20  David Malcolm  <dmalcolm@redhat.com>

        * pretty-print.c (text_info::set_location): Remove redundant
        "line_table" parameter from call to rich_location::set_range.

2018-07-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/82063
        * builtins.c (expand_builtin_alloca): Adjust.
        * calls.c (alloc_max_size): Simplify.
        * cgraphunit.c (cgraph_node::expand): Adjust.
        * common.opt (larger_than_size, warn_frame_larger_than): Remove
        variables.
        (frame_larger_than_size): Same.
        (-Wframe-larger-than, -Wlarger-than, -Wstack-usage): Change options
        to take a HOST_WIDE_INT argument and accept a byte-size suffix.
        Initialize.
        * doc/invoke.texi (GCC Command Options): Document option arguments.
        Explain byte-size arguments and suffixes.
        (-Wvla-larger-than, -Wno-alloc-size-larger-than): Update.
        (-Wno-alloca-larger-than, -Wno-vla-larger-than): Same.
        (-Wframe-larger-than, -Wlarger-than, -Wstack-usage): Same.
        * doc/options.texi (UInteger): Expand.
        (Host_Wide_Int, ByteSize): Document new properties.
        * final.c (final_start_function_1): Include sizes in an error message.
        * function.c (frame_offset_overflow): Same.
        * gimple-ssa-warn-alloca.c (pass_walloca::gate): Adjust.
        (alloca_call_type_by_arg): Change function argument to HOST_WIDE_INT.
        Diagnose unbounded alloca calls only for limits of less than
        PTRDIFF_MAX.
        (alloca_call_type): Adjust.  Diagnose possibly out-of-bounds alloca
        calls and VLA size only for limits of less than PTRDIFF_MAX.  Same
        for alloca(0).
        (pass_walloca::execute): Adjust.  Diagnose alloca calls in loops
        only for limits of less than PTRDIFF_MAX.
        * langhooks-def.h (lhd_handle_option): Change function argument
        to HOST_WIDE_INT.
        * langhooks.c (lhd_handle_option): Same.
        * langhooks.h (handle_option): Same.
        * opt-functions.awk (switch_bit_fields): Handle Host_Wide_Int and
        ByteSize flags.
        (var_type, var_type_struct): Same.
        (var_set): Handle ByteSize flag.
        * optc-gen.awk: Add comments to output to ease debugging.  Make
        use of HOST_WIDE_INT where appropriate.
        * opts-gen-save.awk:  Use %lx to format unsigned long.
        * opth-gen.awk: Change function argument to HOST_WIDE_INT.
        * opts-common.c (integral_argument): Return HOST_WIDE_INT and add
        arguments.  Parse bytes-size suffixes.
        (enum_arg_to_value): Change function argument to HOST_WIDE_INT.
        (enum_value_to_arg): Same.
        (decode_cmdline_option): Handle cl_host_wide_int.  Adjust.
        (handle_option): Adjust.
        (generate_option): Change function argument to HOST_WIDE_INT.
        (cmdline_handle_error): Adjust.
        (read_cmdline_option): Change function argument to HOST_WIDE_INT.
        (set_option): Change function argument to HOST_WIDE_INT.
        (option_enabled): Handle cl_host_wide_int.
        (get_option_state): Handle CLVC_SIZE.
        (control_warning_option): Same.
        * opts.c (common_handle_option): Change function argument to
        HOST_WIDE_INT.  Remove handling of OPT_Walloca_larger_than_ and
        OPT_Wvla_larger_than_.
        * opts.h (enum cl_var_type): Add an enumerator.
        * stor-layout.c (layout_decl): Print a more meaningful warning.
        * toplev.c (output_stack_usage): Adjust.

2018-07-20  Qing Zhao  <qing.zhao@oracle.com>

        * builtins.c (expand_builtin_memcmp): Delete the last parameter for
        call to inline_expand_builtin_string_cmp.
        (expand_builtin_strcmp): Likewise.
        (expand_builtin_strncmp): Likewise.
        (inline_string_cmp): Delete the last parameter, change char_type_node
        to unsigned_char_type_node for strcmp/strncmp, add conversions to the
        two operands.
        (inline_expand_builtin_string_cmp): Delete the last parameter, give up
        the inlining expansion on target where the type of the call has same or
        narrower precision than unsigned char.

2018-07-20  David Malcolm  <dmalcolm@redhat.com>

        * Makefile.in (OBJS): Add json.o and optinfo-emit-json.o.
        (CFLAGS-optinfo-emit-json.o): Define TARGET_NAME.
        * common.opt (fsave-optimization-record): New option.
        * coretypes.h (struct kv_pair): Move here from dumpfile.c.
        * doc/invoke.texi (-fsave-optimization-record): New option.
        * dumpfile.c: Include "optinfo-emit-json.h".
        (struct kv_pair): Move to coretypes.h.
        (optgroup_options): Make non-static.
        (dump_context::end_scope): Call
        optimization_records_maybe_pop_dump_scope.
        * dumpfile.h (optgroup_options): New decl.
        * json.cc: New file.
        * json.h: New file.
        * optinfo-emit-json.cc: New file.
        * optinfo-emit-json.h: New file.
        * optinfo.cc: Include "optinfo-emit-json.h".
        (optinfo::emit): Call optimization_records_maybe_record_optinfo.
        (optinfo_enabled_p): Check optimization_records_enabled_p.
        (optinfo_wants_inlining_info_p): Likewise.
        * optinfo.h: Update comment.
        * profile-count.c (profile_quality_as_string): New function.
        * profile-count.h (profile_quality_as_string): New decl.
        (profile_count::quality): New accessor.
        * selftest-run-tests.c (selftest::run_tests): Call json_cc_tests
        and optinfo_emit_json_cc_tests.
        * selftest.h (selftest::json_cc_tests): New decl.
        (selftest::optinfo_emit_json_cc_tests): New decl.
        * toplev.c: Include "optinfo-emit-json.h".
        (compile_file): Call optimization_records_finish.
        (do_compile): Call optimization_records_start.
        * tree-ssa-live.c: Include optinfo.h.
        (remove_unused_scope_block_p): Retain inlining information if
        optinfo_wants_inlining_info_p returns true.

2018-07-20  Richard Biener  <rguenther@suse.de>

        PR debug/86585
        * dwarf2out.c (dwarf2out_die_ref_for_decl): Test in_lto_p
        to cover -flto-partition=none.

2018-07-20  Martin Liska  <mliska@suse.cz>

        * tree.h (DECL_LOCATION_RANGE): Remove unused macro.
        (get_decl_source_range): Remove unused function.

2018-07-20  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.h (struct vn_nary_op_s): Add next member.
        (struct vn_phi_s): Likewise.
        (struct vn_reference_s): Likewise.
        * tree-ssa-sccvn.c (vn_nary_op_hasher::equal): Add shortcut
        for searching the slot of an entry known to be in the hash itself.
        (vn_phi_hasher::equal): Likewise.
        (vn_reference_hasher::equal): Likewise.
        (last_inserted_ref, last_inserted_phi, last_inserted_nary): New
        globals.
        (optimistic_info, current_info): Remove, keeping only valid_info.
        (vn_reference_lookup_1): Remove fallback lookup.
        (vn_reference_lookup_2): Likewise.
        (vn_nary_op_lookup_1): Likewise.
        (vn_phi_lookup): Likewise.
        (vn_nary_build_or_lookup_1): Make sure to not chain the built
        hash element.
        (vn_reference_insert): Adjust, chain the inserted hash element
        at last_inserted_ref.
        (vn_reference_insert_pieces): Likewise.
        (visit_reference_op_call): Likewise.
        (vn_nary_op_insert_into): Chain the inserted hash element at
        last_inserted_nary.
        (vn_nary_op_insert_pieces): Adjust.
        (vn_nary_op_insert): Likewise.
        (vn_nary_op_insert_stmt): Likewise.
        (vn_phi_insert): Adjust, chain the inserted hash element at
        last_inserted_phi.
        (process_scc): Remove clearing and copying the optimistic
        table.  Instead remove elements inserted during an optimistic
        iteration from the single table we maintain.
        (init_scc_vn): Adjust.
        (free_scc_vn): Likewise.
        (sccvn_dom_walker::record_cond): Likewise.
        (sccvn_dom_walker::after_dom_children): Likewise.

2018-07-19  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84047
        PR tree-optimization/83776
        * tree-vrp.c (vrp_prop::check_mem_ref): New function.
        (check_array_bounds): Call it.

2018-07-19  Martin Sebor  <msebor@redhat.com>

        * align.h (align_flags): Use member initialization.

2018-07-19  David Malcolm  <dmalcolm@redhat.com>

        * Makefile.in (OBJS): Add optinfo.o.
        * coretypes.h (class symtab_node): New forward decl.
        (struct cgraph_node): New forward decl.
        (class varpool_node): New forward decl.
        * dump-context.h: New file.
        * dumpfile.c: Include "optinfo.h", "dump-context.h", "cgraph.h",
        "tree-pass.h".
        (refresh_dumps_are_enabled): Use optinfo_enabled_p.
        (set_dump_file): Call dumpfile_ensure_any_optinfo_are_flushed.
        (set_alt_dump_file): Likewise.
        (dump_context::~dump_context): New dtor.
        (dump_gimple_stmt): Move implementation to...
        (dump_context::dump_gimple_stmt): ...this new member function.
        Add the stmt to any pending optinfo, creating one if need be.
        (dump_gimple_stmt_loc): Move implementation to...
        (dump_context::dump_gimple_stmt_loc): ...this new member function.
        Start a new optinfo and add the stmt to it.
        (dump_gimple_expr): Move implementation to...
        (dump_context::dump_gimple_expr): ...this new member function.
        Add the stmt to any pending optinfo, creating one if need be.
        (dump_gimple_expr_loc): Move implementation to...
        (dump_context::dump_gimple_expr_loc): ...this new member function.
        Start a new optinfo and add the stmt to it.
        (dump_generic_expr): Move implementation to...
        (dump_context::dump_generic_expr): ...this new member function.
        Add the tree to any pending optinfo, creating one if need be.
        (dump_generic_expr_loc): Move implementation to...
        (dump_context::dump_generic_expr_loc): ...this new member
        function.  Add the tree to any pending optinfo, creating one if
        need be.
        (dump_printf): Move implementation to...
        (dump_context::dump_printf_va): ...this new member function.  Add
        the text to any pending optinfo, creating one if need be.
        (dump_printf_loc): Move implementation to...
        (dump_context::dump_printf_loc_va): ...this new member function.
        Start a new optinfo and add the stmt to it.
        (dump_dec): Move implementation to...
        (dump_context::dump_dec): ...this new member function.  Add the
        value to any pending optinfo, creating one if need be.
        (dump_context::dump_symtab_node): New member function.
        (dump_context::get_scope_depth): New member function.
        (dump_context::begin_scope): New member function.
        (dump_context::end_scope): New member function.
        (dump_context::ensure_pending_optinfo): New member function.
        (dump_context::begin_next_optinfo): New member function.
        (dump_context::end_any_optinfo): New member function.
        (dump_context::s_current): New global.
        (dump_context::s_default): New global.
        (dump_scope_depth): Delete global.
        (dumpfile_ensure_any_optinfo_are_flushed): New function.
        (dump_symtab_node): New function.
        (get_dump_scope_depth): Reimplement in terms of dump_context.
        (dump_begin_scope): Likewise.
        (dump_end_scope): Likewise.
        (selftest::temp_dump_context::temp_dump_context): New ctor.
        (selftest::temp_dump_context::~temp_dump_context): New dtor.
        (selftest::verify_item): New function.
        (ASSERT_IS_TEXT): New macro.
        (ASSERT_IS_TREE): New macro.
        (ASSERT_IS_GIMPLE): New macro.
        (selftest::test_capture_of_dump_calls): New test.
        (selftest::dumpfile_c_tests): Call it.
        * dumpfile.h (dump_printf, dump_printf_loc, dump_basic_block)
        (dump_generic_expr_loc, dump_generic_expr, dump_gimple_stmt_loc)
        (dump_gimple_stmt, dump_dec): Gather these related decls and add a
        descriptive comment.
        (dump_function, print_combine_total_stats, enable_rtl_dump_file)
        (dump_node, dump_bb): Move these unrelated decls.
        (class dump_manager): Add leading comment.
        * optinfo.cc: New file.
        * optinfo.h: New file.

2018-07-19  Michael Collison  <michael.collison@arm.com>
            Richard Henderson <rth@redhat.com>

        * config/aarch64/aarch64.md (subv<GPI>4, usubv<GPI>4): New patterns.
        (subti): Handle op1 zero.
        (subvti4, usub4ti4): New.
        (*sub<GPI>3_compare1_imm): New.
        (sub<GPI>3_carryinCV): New.
        (*sub<GPI>3_carryinCV_z1_z2, *sub<GPI>3_carryinCV_z1): New.
        (*sub<GPI>3_carryinCV_z2, *sub<GPI>3_carryinCV): New.

2018-07-19  Michael Collison  <michael.collison@arm.com>
            Richard Henderson <rth@redhat.com>

        * config/aarch64/aarch64.md: (addv<GPI>4, uaddv<GPI>4): New.
        (addti3): Create simpler code if low part is already known to be 0.
        (addvti4, uaddvti4): New.
        (*add<GPI>3_compareC_cconly_imm): New.
        (*add<GPI>3_compareC_cconly): New.
        (*add<GPI>3_compareC_imm): New.
        (*add<GPI>3_compareC): Rename from add<GPI>3_compare1; do not
        handle constants within this pattern..
        (*add<GPI>3_compareV_cconly_imm): New.
        (*add<GPI>3_compareV_cconly): New.
        (*add<GPI>3_compareV_imm): New.
        (add<GPI>3_compareV): New.
        (add<GPI>3_carryinC, add<GPI>3_carryinV): New.
        (*add<GPI>3_carryinC_zero, *add<GPI>3_carryinV_zero): New.
        (*add<GPI>3_carryinC, *add<GPI>3_carryinV): New.
        ((*add<GPI>3_compareC_cconly_imm): Replace 'ne' operator
        with 'comparison' operator.
        (*add<GPI>3_compareV_cconly_imm): Ditto.
        (*add<GPI>3_compareV_cconly): Ditto.
        (*add<GPI>3_compareV_imm): Ditto.
        (add<GPI>3_compareV): Ditto.
        (add<mode>3_carryinC): Ditto.
        (*add<mode>3_carryinC_zero): Ditto.
        (*add<mode>3_carryinC): Ditto.
        (add<mode>3_carryinV): Ditto.
        (*add<mode>3_carryinV_zero): Ditto.
        (*add<mode>3_carryinV): Ditto.

2018-07-19  Michael Collison  <michael.collison@arm.com>
            Richard Henderson <rth@redhat.com>

        * config/aarch64/aarch64-modes.def (CC_V): New.
        * config/aarch64/aarch64-protos.h
        (aarch64_addti_scratch_regs): Declare
        (aarch64_subvti_scratch_regs): Declare.
        (aarch64_expand_subvti): Declare.
        (aarch64_gen_unlikely_cbranch): Declare
        * config/aarch64/aarch64.c (aarch64_select_cc_mode): Test
        for signed overflow using CC_Vmode.
        (aarch64_get_condition_code_1): Handle CC_Vmode.
        (aarch64_gen_unlikely_cbranch): New function.
        (aarch64_addti_scratch_regs): New function.
        (aarch64_subvti_scratch_regs): New function.
        (aarch64_expand_subvti): New function.

2018-07-19  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/aarch64-option-extensions.def: New entry for profile
        extension.
        * config/aarch64/aarch64.h (AARCH64_FL_PROFILE): New.
        * doc/invoke.texi (aarch64-feature-modifiers): New entry for profile
        extension.

2018-07-19  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR target/83009
        * config/aarch64/predicates.md (aarch64_mem_pair_lanes_operand): Make
        address check not strict.

2018-07-19  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_simd_mov<VQ:mode>): Replace
        Umq with Umn.
        (store_pair_lanes<mode>): Likewise.
        * config/aarch64/aarch64-protos.h (aarch64_addr_query_type): Add new
        enum value 'ADDR_QUERY_LDP_STP_N'.
        * config/aarch64/aarch64.c (aarch64_addr_query_type): Likewise.
        (aarch64_print_address_internal): Add declaration.
        (aarch64_print_ldpstp_address): Remove.
        (aarch64_classify_address): Adapt mode for 'ADDR_QUERY_LDP_STP_N'.
        (aarch64_print_operand): Change printing of 'y'.
        * config/aarch64/predicates.md (aarch64_mem_pair_lanes_operand): Use
        new enum value 'ADDR_QUERY_LDP_STP_N', don't hardcode mode and use
        'true' rather than '1'.
        * config/aarch64/constraints.md (Uml): Likewise.
        (Uml): Rename to Umn.
        (Umq): Remove.

2018-07-19  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.h (struct vn_phi_s): Make phiargs member
        a trailing array.
        * tree-ssa-sccvn.c: Remove alloc-pool.h use.
        (vn_phi_hasher): Derive from nofree_ptr_hash and remove remove method.
        (vn_reference_hasher): Likewise.
        (struct vn_tables_s): Remove obstack and alloc-pool members.
        (vn_tables_obstack, vn_tables_insert_obstack): New global obstacks.
        (vn_nary_build_or_lookup_1): Manually build in vn_tables_insert_obstack.
        (vn_reference_insert): Allocate from obstack instead of from alloc-pool.
        (vn_reference_insert_pieces): Likewise.
        (alloc_vn_nary_op_noinit): Adjust.
        (vn_nary_op_insert_stmt): Allocate phiargs in-place.
        (vn_phi_eq): Adjust.
        (shared_lookup_phiargs): Remove.
        (vn_phi_lookup): Allocate temporary vn_phi_s on the stack.
        (vn_phi_insert): Allocate from obstack instead of from alloc-pool.
        (visit_reference_op_call): Likewise.
        (copy_nary, copy_phi, copy_reference): Remove.
        (process_scc): Rewind the obstack when iterating.  Do not
        copy the elements to valid_info but just move them from one
        hashtable to the other.
        (allocate_vn_table): Adjust.
        (free_vn_table): Likewise.
        (init_scc_vn): Likewise.
        (free_scc_vn): Likewise.

2018-07-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/86560
        * config/i386/i386.c (rest_of_insert_endbranch): Lookup
        indirect_return as function type attribute.
        (ix86_attribute_table): Change indirect_return to function
        type attribute.
        * doc/extend.texi: Update indirect_return attribute.

2018-07-19  Aldy Hernandez  <aldyh@redhat.com>

        * wide-int.h (widest2_int): New.
        * gimple-fold.c (arith_overflowed_p): Use it.
        * tree.h (widest2_int_cst): New.
        * tree-vrp.c (wide_int_binop_overflow): Rename from
        vrp_int_const_binop.
        Rewrite to work on trees.
        (extract_range_from_multiplicative_op_1): Abstract code to...
        (wide_int_range_min_max): ...here.
        (wide_int_range_cross_product): ...and here.
        (extract_range_from_binary_expr_1): Abstract overflow code to...
        (wide_int_range_mult_wrapping): ...here.
        * tree-vrp.h (wide_int_range_cross_product): New.
        (wide_int_range_mult_wrapping): New.

2018-07-19  Andrew Senkevich  <andrew.senkevich@intel.com>
            Julia Koval  <julia.koval@intel.com>

        * config/i386/x86-tune-costs.h (skylake_memcpy,
        skylake_memset): Replace rep_prefix with unrolling for size 512.

2018-07-18  Kugan Vivekanandarajah  <kuganv@linaro.org>

        PR middle-end/86544
        * tree-ssa-phiopt.c (cond_removal_in_popcount_pattern): Handle
        comparision with EQ_EXPR in last stmt.

2018-07-18  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC AltiVec Built-in Functions): Rename
        this subsection to "PowerPC AltiVec/VSX Built-in Functions".
        (PowerPC AltiVec/VSX Built-in Functions): New name for subsection
        previously known as "PowerPC AltiVec Built-in Functions".  Move
        some material to new subsubsections "PowerPC AltiVec Built-in
        Functions on ISA 2.06" and "PowerPC AltiVec Built-in Functions on
        ISA 2.07".
        (PowerPC Altivec Built-in Functions on ISA 2.05): New subsubsection.
        (PowerPC Altivec Built-in Functions on ISA 2.06): Likewise.
        (PowerPC Altivec Built-in Functions on ISA 2.07): Likewise.
        (PowerPC Altivec Built-in Functions on ISA 3.0): Likewise.

2018-07-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86557
        * tree-vect-patterns.c (vect_recog_divmod_pattern): Also handle
        EXACT_DIV_EXPR.

2018-07-18  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_function_profiler): Generate CFI.

2018-07-17  Jeff Law  <law@redhat.com>

        * config/arm/arm.c (get_label_padding): Update for recent
        changes to label_to_alignment.

        PR tree-optimization/86010
        * tree-ssa-dse.c (compute_trims): Fix typo/thinko.

        * config/mips/mips.c (vr4130_align_insns): Update for recent
        changes to label_to_alignment.

        * config/frv/frv.c (frv_label_align): Update for recent changes
        to label_to_alignment.

        * config/nios2/nios2.c (nios2_label_align): Update for recent
        changes which dropped ALIGN_LABELS_LOG.

2018-07-17  Andreas Schwab  <schwab@linux-m68k.org>

        * config/m68k/m68k.md (umulsi3_highpart+1, const_umulsi3_highpart)
        (smulsi3_highpart+1, const_smulsi3_highpart): Add CC_STATUS_INIT.

2018-07-17  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_label_align): Use align_labels instead of
        deprecated align_labels_log.

2018-07-17  Richard Biener  <rguenther@suse.de>

        PR lto/86456
        * dwarf2out.c (init_sections_and_labels): Always generate
        a debug_line_str_section for early LTO debug.
        (dwarf2out_finish): Reset debug_line_str_hash output early.
        Bump counter for extra dwarf5 .debug_loc labels to not conflict
        with fat LTO part.
        (dwarf2out_early_finish): Output debug_line_str.

2018-07-17  Robin Dapp  <rdapp@linux.ibm.com>

        * config/s390/s390.c (preferred_la_operand_p): Do not use LA with
        index register on z196 or later.

2018-07-17  Robin Dapp  <rdapp@linux.ibm.com>

        * config/s390/s390.c (s390_default_align): Set default function
        alignment to 16.
        (s390_override_options_after_change): Call s390_default align.
        (s390_option_override_internal): Call s390_default_align.
        (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): Define.

2018-07-17  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86542
        * omp-low.c (create_task_copyfn): Copy over also fields corresponding
        to _looptemp_ clauses, other than the first two.

2018-07-17  Martin Liska  <mliska@suse.cz>

        * opts.c: Do not enable OPT_falign_* for -Os.

2018-07-17  Martin Liska  <mliska@suse.cz>

        * align.h (MAX_CODE_ALIGN): New.
        (MAX_CODE_ALIGN_VALUE): New.
        * common/config/i386/i386-common.c (ix86_handle_option):
        (MAX_CODE_ALIGN): Moved to align.h.
        * final.c (MAX_CODE_ALIGN): Likewise.
        * opts.c (parse_and_check_align_values):
        (MAX_CODE_ALIGN): Likewise.
        (MAX_CODE_ALIGN_VALUE): Likewise.

2018-07-17  Martin Liska  <mliska@suse.cz>

        * config/i386/att.h (ASM_OUTPUT_ALIGN): Fix spacing
        in order to fulfil coding style.
        * config/i386/cygming.h (ASM_OUTPUT_ALIGN): Likewise.
        * config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
        * config/iq2000/iq2000.h (ASM_OUTPUT_ALIGN): Likewise.
        * config/pa/pa.h (ASM_OUTPUT_ALIGN): Likewise.
        * config/sparc/sol2.h (ASM_OUTPUT_ALIGN_WITH_NOP): Likewise.
        * config/sparc/sparc.h (ASM_OUTPUT_ALIGN): Likewise.
        * config/visium/visium.h (ASM_OUTPUT_ALIGN): Likewise.
        (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.

2018-07-17  Martin Liska  <mliska@suse.cz>

        * align.h: New file.
        * config/alpha/alpha.c (alpha_align_insns_1): Use align_functions
        directly.
        * config/i386/i386.c (ix86_avoid_jump_mispredicts): Use new return type
        align_flags of label_to_alignment.
        * config/m32r/m32r.h (LOOP_ALIGN): Wrap returned values into
        align_flags class.
        * config/m68k/m68k.c: Do not use removed align_labels_value and
        align_loops_value.
        * config/nds32/nds32.h (JUMP_ALIGN): Wrap result into align_flags class.
        (LOOP_ALIGN): Likewise.
        (LABEL_ALIGN): Likewise.
        * config/powerpcspe/powerpcspe.c (TARGET_ASM_LOOP_ALIGN_MAX_SKIP):
        Remove not used macro.
        (rs6000_loop_align): Change return type to align_flags.
        (rs6000_loop_align_max_skip): Remove.
        * config/rs6000/rs6000-protos.h (rs6000_loop_align):
        Change return type to align_flags.
        * config/rs6000/rs6000.c (TARGET_ASM_LOOP_ALIGN_MAX_SKIP):
        Remove not used macro.
        (rs6000_loop_align):  Change return type to align_flags.
        (rs6000_loop_align_max_skip): Remove.
        * config/rx/rx.h (JUMP_ALIGN): Wrap integer values
        * config/rx/rx-protos.h (rx_align_for_label): Make it
        static function.
        * config/rx/rx.c (rx_align_for_label): Change return type
        to align_flags.
        (rx_max_skip_for_label): Remove TARGET_ASM_*_ALIGN_MAX_SKIP
        macro definitions.
        into align_flags class.
        (LABEL_ALIGN): Likewise.
        (LOOP_ALIGN): Likewise.
        * config/s390/s390.c (s390_label_align): Use align_flags
        class member.
        (s390_asm_output_function_label): Likewise.
        * config/sh/sh.c (sh_override_options_after_change):
        Use align_flags class directly without macros.
        (find_barrier): Likewise.
        (barrier_align): Likewise.
        (sh_loop_align): Likewise.
        * config/spu/spu.c (spu_option_override):
        Use align_flags_tuple::get_value instead of removed macros.
        (spu_sched_init): Likewise.
        * config/spu/spu.h (GTY): Likewise.
        * config/visium/visium.c (visium_option_override):
        Set "8" as default secondary alignment.
        * config/visium/visium.h (SUBALIGN_LOG): Define to 3
        in order to guarantee secondary alignment of 8.
        * coretypes.h: Include align.h header file.
        * doc/tm.texi: Remove TARGET_ASM_JUMP_ALIGN_MAX_SKIP,
        TARGET_ASM_LOOP_ALIGN_MAX_SKIP, TARGET_ASM_LABEL_ALIGN_MAX_SKIP
        and TARGET_ASM_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP macros.
        * doc/tm.texi.in: Likewise.
        * final.c (struct label_alignment): Remove not used structure.
        (LABEL_ALIGN): Change type to align_flags.
        (LOOP_ALIGN): Likewise.
        (JUMP_ALIGN): Likewise.
        (default_loop_align_max_skip): Remove.
        (default_label_align_max_skip): Likewise.
        (default_jump_align_max_skip): Likewise.
        (default_label_align_after_barrier_max_skip):
        (LABEL_TO_ALIGNMENT): Change to access label_align vector.
        (LABEL_TO_MAX_SKIP): Remove.
        (label_to_alignment): Return align_flags type instead of integer.
        (label_to_max_skip): Remove.
        (align_fuzz): Use align_flags type.
        (compute_alignments): Use align_flags type and use align_flags::max
        to combine multiple alignments.
        (grow_label_align): Grow vec instead of C array.
        (update_alignments): Assign just LABEL_TO_ALIGNMENT.
        (shorten_branches):  Use align_flags type and use align_flags::max
        to combine multiple alignments.
        (final_scan_insn_1): Remove usage of secondary alignment that comes
        from label alignment, but instead use proper secondary alignment
        which is computed in grow_label_align.
        * flags.h (struct align_flags_tuple): Move to align.h.
        (struct align_flags): Likewise.
        (state_align_loops): Rename to align_loops.
        (state_align_jumps): Rename to align_jumps.
        (state_align_labels): Rename to align_labels.
        (state_align_functions): Rename to align_functions.
        (align_loops_log): Remove.
        (align_jumps_log): Remove.
        (align_labels_log): Remove.
        (align_functions_log): Remove.
        (align_loops_max_skip): Remove.
        (align_jumps_max_skip): Remove.
        (align_labels_max_skip): Remove.
        (align_functions_max_skip): Remove.
        (align_loops_value): Remove.
        (align_jumps_value): Remove.
        (align_labels_value): Remove.
        (align_functions_value): Remove.
        * output.h (label_to_alignment): Change return type to align_flags.
        (label_to_max_skip): Remove.
        * target.def: Remove loop_align_max_skip, label_align_max_skip,
        jump_align_max_skip macros.
        * targhooks.h (default_loop_align_max_skip): Remove.
        (default_label_align_max_skip): Likewise.
        (default_jump_align_max_skip): Likewise.
        (default_label_align_after_barrier_max_skip): Remove.
        * toplev.c (read_log_maxskip): Use ::normalize function.
        (parse_N_M): Remove not used argument and also call ::normalize.
        (parse_alignment_opts): Do not pass unused arguments.
        * varasm.c (assemble_start_function): Use directly align_functions
        instead of removed macros.
        * system.h: Do not poison removed macros.

2018-07-17  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86539
        * gimplify.c (gimplify_omp_for): Ensure taskloop firstprivatized init
        and cond temporaries don't have reference type if iterator has
        pointer type.  For init use &for_pre_body instead of pre_p if
        for_pre_body is non-empty.

2018-07-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (trunc<mode>sf2): Expand truncates of
        double-double modes to SFmode directly directly.
        (trunc<mode>sf2_fprs): Delete.

2018-07-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (init_float128_ibm): Use the correct names
        for conversions between IFmode and the decimal floating point modes.
        (init_float128_ieee): Use the correct names for conversions between
        KFmode and the decimal floating point modes.

2018-07-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (init_float128_ibm): Use more correct names
        for the conversions between TDmode and IFmode.
        (init_float128_ieee): Use more correct names for the conversions
        between TDmode and KFmode.

2018-07-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86526
        * builtins.c (expand_builtin_memcmp): Formatting fixes.
        (inline_expand_builtin_string_cmp): Likewise.
        (inline_string_cmp): Likewise.  Use c_readstr instead of
        builtin_memcpy_read_str.  Add unit_mode temporary.

2018-07-16  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/86528
        * builtins.c (check_access): Bail out if range[0] is no INTEGER_CST.
        * expr.c (string_constant): Fix the element size of ARRAY_TYPE.

2018-07-16  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC AltiVec Built-in Functions):
        Alphabetize prototypes of built-in functions, separating out
        built-in functions that are listed in this section but should be
        described elsewhere.

2018-07-16  Uros Bizjak  <ubizjak@gmail.com>

        PR target/86511
        * expmed.c (emit_store_flag): Do not emit setcc followed by a
        conditional move when trapping comparison was split to a
        non-trapping one (and vice versa).

2018-07-16  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_function_profiler): Generate nops
        instead of profiler call sequences.
        * config/s390/s390.opt: Add the new option.

2018-07-16  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390.c (s390_function_profiler): Generate
        __mcount_loc section.
        * config/s390/s390.opt: Add the new option.

2018-07-16  Ilya Leoshkevich  <iii@linux.ibm.com>

        * common.opt: Add the new warning.
        * config/s390/s390.c (s390_function_profiler): Emit "brasl
        %r0,__fentry__" when -mfentry is specified.
        (s390_option_override_internal): Disallow -mfentry for 31-bit
        CPUs.
        * config/s390/s390.opt: Add the new option.

2018-07-16  Richard Biener  <rguenther@suse.de>

        PR lto/86523
        * dwarf2out.c (dwarf2out_register_external_die): Assign DIE parents
        for function-local FUNCTION_DECL and RESULT_DECL immediately.

2018-07-16  Martin Liska  <mliska@suse.cz>

        PR ipa/86529
        * ipa-pure-const.c (malloc_candidate_p): Revert ::get
        to ::get_create.

2017-07-16  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arcHS.md: Update ARCHS scheduling rules.

2017-07-16  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arch.h (arc_tune_attr): Add new tune parameters
        for ARCHS4x.
        * config/arc/arc-cpus.def (hs4x): New cpu.
        (hs4xd): Likewise.
        * config/arc/arc-tables.opt: Regenerate.
        * config/arc/arc.c (arc_sched_issue_rate): New function.
        (TARGET_SCHED_ISSUE_RATE): Define.
        (TARGET_SCHED_EXPOSED_PIPELINE): Likewise.
        * config/arc/arc.md (attr type): Add fpu_fuse, fpu_sdiv, fpu_ddiv,
        fpu_cvt.
        (attr tune): Add ARCHS4x tune values.
        (attr tune_dspmpy): Define.
        (*tst): Correct instruction type.
        * config/arc/arcHS.md: Don't use this automaton for ARCHS4x cpus.
        * config/arc/arcHS4x.md: New file.
        * config/arc/fpu.md: Update instruction type attributes.
        * config/arc/t-multilib: Regenerate.

2018-07-16  Tom de Vries  <tdevries@suse.de>

        PR debug/86455
        * var-tracking.c (vt_initialize): Fix pre_dec handling.

2018-07-16  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config/aarch64/atomics.md (aarch64_store_execlusive<mode>): Add
        early clobber.

2018-07-16  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/86514
        * tree-ssa-reassoc.c (init_range_entry) <CASE_CONVERT>: Return for a
        conversion to a boolean type from a type with greater precision.

2018-07-16  Tom de Vries  <tdevries@suse.de>

        * var-tracking.c (vt_initialize): Print adjusted insn slim if
        dump_flags request TDF_SLIM.

2018-07-16  Aldy Hernandez  <aldyh@redhat.com>

        * fold-const.c (int_const_binop_1): Abstract...
        (wide_int_binop): ...wide int code here.
        (poly_int_binop): ...poly int code here.
        Abstract the rest of int_const_binop_1 into int_const_binop.
        * fold-const.h (wide_int_binop): New.
        * tree-vrp.c (vrp_int_const_binop): Call wide_int_binop.
        Remove useless PLUS/MINUS_EXPR case.
        (zero_nonzero_bits_from_vr): Move wide int code...
        (zero_nonzero_bits_from_bounds): ...here.
        (extract_range_from_binary_expr_1): Move mask optimization code...
        (range_easy_mask_min_max): ...here.
        * tree-vrp.h (zero_nonzero_bits_from_bounds): New.
        (range_easy_mask_min_max): New.

2018-07-15  Jeff Law  <law@redhat.com>

        PR target/85993
        * config/sh/sh.c (output_mi_thunk): Remove dead conditional
        block.

2018-07-14  Jim Wilson  <jimw@sifive.com>

        * config/riscv/linux.h (TARGET_ASM_FILE_END): New.

2018-07-14  Paul Koning  <ni1d@arrl.net>

        * config/pdp11/pdp11.c (pdp11_rtx_costs): Bugfixes.

2018-07-13  Jan Hubicka  <hubicka@ucw.cz>

        * lto-streamer-out.c (copy_function_or_variable): Dump info about
        copying section.

2018-07-13  Bill Schmidt  <wschmidt@linux.ibm.com>
            Steve Munroe  <munroesj52@gmail.com>

        * config/rs6000/emmintrin.h (_mm_and_si128): New function.
        (_mm_andnot_si128): Likewise.
        (_mm_or_si128): Likewise.
        (_mm_xor_si128): Likewise.

2018-07-13  Qing Zhao  <qing.zhao@oracle.com>

        PR middle-end/78809
        * builtins.c (expand_builtin_memcmp): Inline the calls first
        when result_eq is false.
        (expand_builtin_strcmp): Inline the calls first.
        (expand_builtin_strncmp): Likewise.
        (inline_string_cmp): New routine. Expand a string compare
        call by using a sequence of char comparison.
        (inline_expand_builtin_string_cmp): New routine. Inline expansion
        a call to str(n)cmp/memcmp.
        * doc/invoke.texi (--param builtin-string-cmp-inline-length):
        New option.
        * params.def (BUILTIN_STRING_CMP_INLINE_LENGTH): New.

2018-07-13  Richard Earnshaw  <rearnsha@arm.com>

        * config/arm/driver-arm.c: Include arm-native.h.
        (host_detect_local_cpu): Use auto-generated data tables.
        (vendors, arm_cpu_table): Delete.  Move part information to ...
        * config/arm/arm-cpus.in: ... here.
        * config/arm/parsecpu.awk (gen_native): New function.
        (vendor, part): New CPU fields.
        (END): Add support for building the native CPU detection tables.
        * config/arm/t-arm (arm-native.h): Add build rule.
        (driver-arm.o): Add dependency on arm-native.h.

2018-07-13  Richard Biener  <rguenther@suse.de>

        PR middle-end/85974
        * match.pd (addr1 - addr2): Allow either of the operand to
        have a conversion.

2018-07-13  Tom de Vries  <tdevries@suse.de>

        * tree-inline.c (remap_ssa_name): Save and reuse debug exprs generated
        in remap_ssa_name.

2018-07-13  Jackson Woodruff  <jackson.woodruff@arm.com>

        * config/aarch64/aarch64.c (aarch64_operands_adjust_ok_for_ldpstp): Use
        arrays instead of numbered variables.

2018-07-13  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc-protos.h (sparc_compute_frame_size): Delete.
        * config/sparc/sparc.c (sparc_compute_frame_size): Make static.

2018-07-13  Richard Biener  <rguenther@suse.de>

        PR debug/86452
        * dwarf2out.c (gen_type_die_with_usage): Use scope_die_for
        instead of get_context_die.

2018-07-13  Kugan Vivekanandarajah  <kuganv@linaro.org>
            Richard Biener  <rguenther@suse.de>

        PR middle-end/86489
        * tree-ssa-loop-niter.c (number_of_iterations_popcount): Check
        that the loop latch destination where phi is defined.

2018-07-12  Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/riscv.c (enum riscv_privilege_levels): Add UNKNOWN_MODE.
        (riscv_expand_epilogue): Add assertion to check interrupt mode.
        (riscv_set_current_function): Extract getting interrupt type to new
        function.
        (riscv_get_interrupt_type): New function.
        (riscv_merge_decl_attributes): New function, checking interrupt type is
        same.
        (TARGET_MERGE_DECL_ATTRIBUTES): Define.

2018-07-12  Paul Koning  <ni1d@arrl.net>

        * config/pdp11/pdp11.c (pdp11_output_def): Fix typo in .set
        directive.

2018-07-12  Paul Koning  <ni1d@arrl.net>

        * doc/rtl.texi (REG_NONNEG): Remove decrement and branch until
        zero reference, add doloop_end instead.
        * doc/md.texi (decrement_and_branch_until_zero): Remove.
        (Looping patterns): Remove decrement_and_branch_until_zero.  Add
        detail for doloop_end.

2018-07-12  Martin Sebor  <msebor@redhat.com>

        PR c/86453
        * attribs.c (decl_attributes): Reject conflicting attributes before
        calling attribute handlers.

2018-07-12  Jan Hubicka  <hubicka@ucw.cz>

        * dumpfile.c (gcc::dump_manager::get_dump_file_name): Add PART
         parameter.
        (gcc::dump_manager::get_dump_file_name): likewise.
        (dump_begin): Likewise.
        * dumpfile.h (dump_begin): Update prototype.
        (gcc::dump_manager::get_dump_file_name,
        gcc::dump_manager::get_dump_file_name): Update prototype.

2018-07-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * internal-fn.h (vectorizable_internal_fn_p): New function.
        * tree-vect-slp.c (compatible_calls_p): Likewise.
        (vect_build_slp_tree_1): Remove nops argument.  Handle calls
        to internal functions.
        (vect_build_slp_tree_2): Update call to vect_build_slp_tree_1.

2018-07-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * fold-const.h (inverse_conditions_p): Declare.
        * fold-const.c (inverse_conditions_p): New function.
        * match.pd: Use inverse_conditions_p.  Add folds of view_converts
        that test the inverse condition of a conditional internal function.
        * internal-fn.h (vectorized_internal_fn_supported_p): Declare.
        * internal-fn.c (internal_fn_mask_index): Handle conditional
        internal functions.
        (vectorized_internal_fn_supported_p): New function.
        * tree-if-conv.c: Include internal-fn.h and fold-const.h.
        (any_pred_load_store): Replace with...
        (need_to_predicate): ...this new variable.
        (redundant_ssa_names): New variable.
        (ifcvt_can_use_mask_load_store): Move initial checks to...
        (ifcvt_can_predicate): ...this new function.  Handle tree codes
        for which a conditional internal function exists.
        (if_convertible_gimple_assign_stmt_p): Use ifcvt_can_predicate
        instead of ifcvt_can_use_mask_load_store.  Update after variable
        name change.
        (predicate_load_or_store): New function, split out from
        predicate_mem_writes.
        (check_redundant_cond_expr): New function.
        (value_available_p): Likewise.
        (predicate_rhs_code): Likewise.
        (predicate_mem_writes): Rename to...
        (predicate_statements): ...this.  Use predicate_load_or_store
        and predicate_rhs_code.
        (combine_blocks, tree_if_conversion): Update after above name changes.
        (ifcvt_local_dce): Handle redundant_ssa_names.
        * tree-vect-patterns.c (vect_recog_mask_conversion_pattern): Handle
        general conditional functions.
        * tree-vect-stmts.c (vectorizable_call): Likewise.

2018-07-12  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * internal-fn.h (can_interpret_as_conditional_op_p): Declare.
        * internal-fn.c (can_interpret_as_conditional_op_p): New function.
        * tree-ssa-math-opts.c (convert_mult_to_fma_1): Handle conditional
        plus and minus and convert them into IFN_COND_FMA-based sequences.
        (convert_mult_to_fma): Handle conditional plus and minus.

2018-07-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/md.texi (cond_fma, cond_fms, cond_fnma, cond_fnms): Document.
        * optabs.def (cond_fma_optab, cond_fms_optab, cond_fnma_optab)
        (cond_fnms_optab): New optabs.
        * internal-fn.def (COND_FMA, COND_FMS, COND_FNMA, COND_FNMS): New
        internal functions.
        (FMA): Use DEF_INTERNAL_FLT_FN rather than DEF_INTERNAL_FLT_FLOATN_FN.
        * internal-fn.h (get_conditional_internal_fn): Declare.
        (get_unconditional_internal_fn): Likewise.
        * internal-fn.c (cond_ternary_direct): New macro.
        (expand_cond_ternary_optab_fn): Likewise.
        (direct_cond_ternary_optab_supported_p): Likewise.
        (FOR_EACH_COND_FN_PAIR): Likewise.
        (get_conditional_internal_fn): New function.
        (get_unconditional_internal_fn): Likewise.
        * gimple-match.h (gimple_match_op::MAX_NUM_OPS): Bump to 5.
        (gimple_match_op::gimple_match_op): Add a new overload for 5
        operands.
        (gimple_match_op::set_op): Likewise.
        (gimple_resimplify5): Declare.
        * genmatch.c (decision_tree::gen): Generate simplifications for
        5 operands.
        * gimple-match-head.c (gimple_simplify): Define an overload for
        5 operands.  Handle calls with 5 arguments in the top-level overload.
        (convert_conditional_op): Handle conversions from unconditional
        internal functions to conditional ones.
        (gimple_resimplify5): New function.
        (build_call_internal): Pass a fifth operand.
        (maybe_push_res_to_seq): Likewise.
        (try_conditional_simplification): Try converting conditional
        internal functions to unconditional internal functions.
        Handle 3-operand unconditional forms.
        * match.pd (UNCOND_TERNARY, COND_TERNARY): Operator lists.
        Define ternary equivalents of the current rules for binary conditional
        internal functions.
        * config/aarch64/aarch64.c (aarch64_preferred_else_value): Handle
        ternary operations.
        * config/aarch64/iterators.md (UNSPEC_COND_FMLA, UNSPEC_COND_FMLS)
        (UNSPEC_COND_FNMLA, UNSPEC_COND_FNMLS): New unspecs.
        (optab): Handle them.
        (SVE_COND_FP_TERNARY): New int iterator.
        (sve_fmla_op, sve_fmad_op): New int attributes.
        * config/aarch64/aarch64-sve.md (cond_<optab><mode>)
        (*cond_<optab><mode>_2, *cond_<optab><mode_4)
        (*cond_<optab><mode>_any): New SVE_COND_FP_TERNARY patterns.

2018-07-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * target.def (preferred_else_value): New target hook.
        * doc/tm.texi.in (TARGET_PREFERRED_ELSE_VALUE): New hook.
        * doc/tm.texi: Regenerate.
        * targhooks.h (default_preferred_else_value): Declare.
        * targhooks.c (default_preferred_else_value): New function.
        * internal-fn.h (conditional_internal_fn_code): Declare.
        * internal-fn.c (FOR_EACH_CODE_MAPPING): New macro.
        (get_conditional_internal_fn): Use it.
        (conditional_internal_fn_code): New function.
        * gimple-match.h (gimple_match_cond): New struct.
        (gimple_match_op): Add a cond member function.
        (gimple_match_op::gimple_match_op): Update all forms to take a
        gimple_match_cond.
        * genmatch.c (expr::gen_transform): Use the same condition as res_op
        for the suboperation, but don't specify a particular else_value.
        * tree-ssa-sccvn.c (vn_nary_simplify, vn_reference_lookup_3)
        (visit_nary_op, visit_reference_op_load): Pass
        gimple_match_cond::UNCOND to the gimple_match_op constructor.
        * gimple-match-head.c: Include tree-eh.h
        (convert_conditional_op): New function.
        (maybe_resimplify_conditional_op): Likewise.
        (gimple_resimplify1): Call maybe_resimplify_conditional_op.
        (gimple_resimplify2): Likewise.
        (gimple_resimplify3): Likewise.
        (gimple_resimplify4): Likewise.
        (maybe_push_res_to_seq): Return null for conditional operations.
        (try_conditional_simplification): New function.
        (gimple_simplify): Call it.  Pass conditions to the gimple_match_op
        constructor.
        * match.pd: Fold VEC_COND_EXPRs of an IFN_COND_* call to a new
        IFN_COND_* call.
        * config/aarch64/aarch64.c (aarch64_preferred_else_value): New
        function.
        (TARGET_PREFERRED_ELSE_VALUE): Redefine.

2018-07-12  Jan Hubicka  <hubicka@ucw.cz>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Do not stream
        DECL_FCONTEXT
        (hash_tree): Do not hash DECL_FCONTEXT
        * tree-streamer-in.c (lto_input_ts_field_decl_tree_pointers):
        Do not stream DECL_FCONTEXT.
        * tree-streamer-out.c (write_ts_field_decl_tree_pointers): Likewise.
        * tree.c (free_lang_data_in_decl): Free DECL_FCONTEXT.

2018-07-12  Richard Biener  <rguenther@suse.de>

        PR debug/86462
        * dwarf2out.c (gen_block_die): Only output blocks when they have
        at least one !DECL_IGNORED_P variable.

2018-07-12  Richard Biener  <rguenther@suse.de>

        PR target/84829
        * config/gnu-user.h (GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC):
        Remove -mieee-fp handling.

2018-07-12  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vn_lookup_simplify_result): Remove bogus
        left-over from last patch.

2018-07-12  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86492
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::coalesce_immediate_stores): Call
        check_no_overlap even for the merge_overlapping case.  Formatting fix.

2018-07-12  Richard Biener  <rguenther@suse.de>

        PR middle-end/86479
        * fold-const.c (fold_binary_op_with_conditional_arg): Do not
        move possibly trapping operations into the conditional.

2018-07-12  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (mprts_hook_cnt): Remove.
        (vn_lookup_simplify_result): Remove recursion limit applied
        here.
        (vn_nary_build_or_lookup_1): Adjust.
        (try_to_simplify): Likewise.
        * gimple-match-head.c (gimple_resimplify1): Instead apply one
        here.
        (gimple_resimplify2): Likewise.
        (gimple_resimplify3): Likewise.
        (gimple_resimplify4): Likewise.

2018-07-11  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/avx512bitalgintrin.h (_mm512_mask_bitshuffle_epi64_mask):
        Use __mmask64 type instead of __mmask8 for __M argument.
        * config/i386/avx512fintrin.h (_mm512_mask_xor_epi64,
        _mm512_maskz_xor_epi64): Use __mmask8 type instead of __mmask16 for
        __U argument.
        (_mm512_mask_cmpneq_epi64_mask): Use __mmask8 type instead of
        __mmask16 for __M argument.
        (_mm512_maskz_insertf32x4, _mm512_maskz_inserti32x4,
        _mm512_mask_insertf32x4, _mm512_mask_inserti32x4): Cast last argument
        to __mmask16 instead of __mmask8.
        * config/i386/avx512vlintrin.h (_mm_mask_add_ps, _mm_maskz_add_ps,
        _mm256_mask_add_ps, _mm256_maskz_add_ps, _mm_mask_sub_ps,
        _mm_maskz_sub_ps, _mm256_mask_sub_ps, _mm256_maskz_sub_ps,
        _mm256_maskz_cvtepi32_ps, _mm_maskz_cvtepi32_ps): Use __mmask8 type
        instead of __mmask16 for __U argument.
        * config/i386/avx512vlbwintrin.h (_mm_mask_cmp_epi8_mask): Use
        __mmask16 instead of __mmask8 for __U argument.
        (_mm256_mask_cmp_epi8_mask): Use __mmask32 instead of __mmask16 for
        __U argument.
        (_mm256_cmp_epi8_mask): Use __mmask32 return type instead of
        __mmask16.
        (_mm_mask_cmp_epu8_mask): Use __mmask16 instead of __mmask8 for __U
        argument.
        (_mm256_mask_cmp_epu8_mask): Use __mmask32 instead of __mmask16 for
        __U argument.
        (_mm256_cmp_epu8_mask): Use __mmask32 return type instead of
        __mmask16.
        (_mm_mask_cmp_epi16_mask): Cast last argument to __mmask8 instead
        of __mmask16.
        (_mm256_mask_cvtepi8_epi16): Use __mmask16 instead of __mmask32 for
        __U argument.
        (_mm_mask_cvtepi8_epi16): Use __mmask8 instead of __mmask32 for
        __U argument.
        (_mm256_mask_cvtepu8_epi16): Use __mmask16 instead of __mmask32 for
        __U argument.
        (_mm_mask_cvtepu8_epi16): Use __mmask8 instead of __mmask32 for
        __U argument.
        (_mm256_mask_cmpneq_epu8_mask, _mm256_mask_cmplt_epu8_mask,
        _mm256_mask_cmpge_epu8_mask, _mm256_mask_cmple_epu8_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask32.
        (_mm256_mask_cmpneq_epu16_mask, _mm256_mask_cmplt_epu16_mask,
        _mm256_mask_cmpge_epu16_mask, _mm256_mask_cmple_epu16_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask16.
        (_mm256_mask_cmpneq_epi8_mask, _mm256_mask_cmplt_epi8_mask,
        _mm256_mask_cmpge_epi8_mask, _mm256_mask_cmple_epi8_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask32.
        (_mm256_mask_cmpneq_epi16_mask, _mm256_mask_cmplt_epi16_mask,
        _mm256_mask_cmpge_epi16_mask, _mm256_mask_cmple_epi16_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask16.
        * config/i386/avx512vbmi2vlintrin.h (_mm_mask_shrdi_epi32,
        _mm_mask_shldi_epi32): Cast last argument to __mmask8 instead of
        __mmask16.

2018-07-11  Grazvydas Ignotas  <notasas@gmail.com>

        * config/i386/avx512bwintrin.h: (_mm512_mask_cmp_epi8_mask,
        _mm512_mask_cmp_epu8_mask): Use __mmask64 type instead of __mmask32
        for __U argument.

2018-07-11  Paul Koning  <ni1d@arrl.net>

        * doc/md.texi (define_subst): Document how multiple occurrences of
        the same argument in the replacement pattern are handled.

2018-07-11  Paul Koning  <ni1d@arrl.net>

        * doc/extend.texi (Common Variable Attributes): Move "mode" into
        alphabetical order.
        (Common Type Attributes): Add "mode" attribute.

2018-07-11  Jan Hubicka  <hubicka@ucw.cz>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Do not
        stream DECL_ORIGINAL_TYPE.
        (DFS::DFS_write_tree_body): Drop hack handling local external decls.
        (hash_tree): Do not walk DECL_ORIGINAL_TYPE.
        * tree-streamer-in.c (lto_input_ts_decl_non_common_tree_pointers):
        Do not walk original type.
        * tree-streamer-out.c (streamer_write_chain): Drop hack handling
        external decls.
        (write_ts_decl_non_common_tree_pointers): Do not stream
        DECL_ORIGINAL_TYPE
        * tree.c (free_lang_data_in_decl): Clear DECL_ORIGINAL_TYPE.
        (find_decls_types_r): Do not walk DEC_ORIGINAL_TYPE.

2018-07-11  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadupdate.c (thread_through_all_blocks): Do not jump
        thread twice from the same starting edge.

2018-07-11  Aldy Hernandez  <aldyh@redhat.com>

        * vr-values.c (gimple_stmt_nonzero_p): Abstract common code to...
        * gimple.c (gimple_call_nonnull_result_p): ...here...
        (gimple_call_nonnull_arg): ...and here.
        * gimple.h (gimple_call_nonnull_result_p): New.
        (gimple_call_nonnull_arg): New.

2018-07-11  Richard Earnshaw  <rearnsha@arm.com>

        * config/arm/arm-cpus.in: Move information from fpu field of each
        cpu definition to the isa field.
        * config/arm/parsecpu.awk (fpu): Delete match rule.
        (gen_comm_data): Don't add bits from the CPU's FPU entry.

2018-07-11  Richard Biener  <rguenther@suse.de>

        PR debug/86457
        * dwarf2out.c (init_sections_and_labels): Use
        output_asm_line_debug_info consistently.
        (dwarf2out_early_finish): Likewise.
        (dwarf2out_finish): Remove DW_AT_stmt_list from early generated
        type units.

2018-07-11  Richard Biener  <rguenther@suse.de>

        * tree-ssa-loop-ivcanon.c (tree_unroll_loops_completely_1):
        Rework father_bb setting in a way to avoid propagating constants
        multiple times on a loop body.

2018-07-10  Mark Wielaard  <mark@klomp.org>

        PR debug/86459
        * dwarf2out.c (output_macinfo_op): Fix dwarf_FORM typo in gcc_assert.

2018-07-10  Richard Biener  <rguenther@suse.de>

        * hash-map.h (hash_map::iterator::operator*): Return
        references to key and value.

2018-07-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86443
        * gimplify.c (find_combined_omp_for): Add DATA argument, in addition
        to finding the inner OMP_FOR/OMP_SIMD stmt find non-trivial wrappers,
        BLOCKs with BLOCK_VARs, OMP_PARALLEL in between, OMP_FOR in between.
        (gimplify_omp_for): For composite loops, move outer
        OMP_{DISTRIBUTE,TASKLOOP,FOR,PARALLEL} right around innermost
        OMP_FOR/OMP_SIMD if there are any non-trivial wrappers.  For class
        iterators add any needed clauses.  Allow OMP_FOR_ORIG_DECLS to contain
        TREE_LIST for both the original class iterator and the "last" helper
        var.  Gimplify OMP_FOR_PRE_BODY before the outermost composite
        loop, remember has_decl_expr from outer composite loops for the
        innermost OMP_SIMD in TREE_PRIVATE bit on OMP_FOR_INIT.

2018-07-09  Martin Sebor  <msebor@redhat.com>

        PR middle-end/77357
        PR middle-end/86428
        * builtins.c (c_strlen): Avoid out-of-bounds warnings when
        accessing implicitly initialized array elements.
        * expr.c (string_constant): Handle string initializers of
        character arrays within aggregates.
        * gimple-fold.c (fold_array_ctor_reference): Add argument.
        Store element offset.  As a special case, handle zero size.
        (fold_nonarray_ctor_reference): Same.
        (fold_ctor_reference): Add argument.  Store subobject offset.
        * gimple-fold.h (fold_ctor_reference): Add argument.

2018-07-09  Paul Koning  <ni1d@arrl.net>

        * config/pdp11/pdp11.c (pdp11_addr_cost): New function.
        (pdp11_insn_cost): New function.
        (pdp11_md_asm_adjust): New function.
        (TARGET_INVALID_WITHIN_DOLOOP): Define.
        (pdp11_rtx_costs): Update to match machine better.
        (output_addr_const_pdp11): Correct format mismatch warnings.
        * config/pdp11/pdp11.h (SLOW_BYTE_ACCESS): Correct definition.
        * config/pdp11/pdp11.md: General change to add base_cost and/or
        length attributes for use by new pdp11_insn_cost function.
        (MIN_BRANCH): Correct definition.
        (MIN_SOB): Ditto.
        (doloop_end): Use standard pattern name for looping pattern.
        (doloop_end_nocc): New.
        (movsf): Add another constraint alternative.
        (zero_extendqihi2): Add constraint alternatives for not in place
        extend.
        (zero_extendhisi2): Remove.
        (shift patterns): Add CC handling variants.
        (bswaphi2): New.
        (bswapsi2): New.
        (rothi3): New.
        (define_peephole2): New peephole to recognize mov that sets CC for
        subsequent test.

2018-07-09  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * config/sparc/sparc.c (sparc_fold_builtin) <SPARC_BUILTIN_PDIST,
        SPARC_BUILTIN_PDISTN>: Adapt for signature change of wi::neg,
        wi::add.

2018-07-09  Jakub Jelinek  <jakub@redhat.com>

        PR c/86420
        * real.c (real_nextafter): Return true if result is denormal.

2018-07-09  Martin Liska  <mliska@suse.cz>

        * common.opt: Add back wrongly removed attribute.

2018-07-09  Richard Biener  <rguenther@suse.de>

        PR debug/86413
        * dwarf2out.c (gen_block_die): For an early generated DIE
        always output high/low PC attributes.

2018-07-09  Tom de Vries  <tdevries@suse.de>

        * cfgexpand.c (expand_debug_source_expr): Handle VAR_DECL.
        * tree-inline.c (remap_ssa_name): Handle default def ssa_name mapping
        onto VAR_DECL with abstract origin.

2018-07-07  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (TARGET_CUSTOM_FUNCTION_DESCRIPTORS): New.

2018-07-07  Tom de Vries  <tdevries@suse.de>

        * tree-dfa.c (dump_enumerated_decls): Handle cfun->cfg == NULL.

2018-07-07  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (vrp_int_const_binop): Change overflow type to
        overflow_type.
        (combine_bound): Use wide-int overflow calculation instead of
        rolling our own.
        * calls.c (maybe_warn_alloc_args_overflow): Change overflow type to
        overflow_type.
        * fold-const.c (int_const_binop_2): Same.
        (extract_muldiv_1): Same.
        (fold_div_compare): Same.
        (fold_abs_const): Same.
        * match.pd: Same.
        * poly-int.h (add): Same.
        (sub): Same.
        (neg): Same.
        (mul): Same.
        * predict.c (predict_iv_comparison): Same.
        * profile-count.c (slow_safe_scale_64bit): Same.
        * simplify-rtx.c (simplify_const_binary_operation): Same.
        * tree-chrec.c (tree_fold_binomial): Same.
        * tree-data-ref.c (split_constant_offset_1): Same.
        * tree-if-conv.c (idx_within_array_bound): Same.
        * tree-scalar-evolution.c (iv_can_overflow_p): Same.
        * tree-ssa-phiopt.c (minmax_replacement): Same.
        * tree-vect-loop.c (is_nonwrapping_integer_induction): Same.
        * tree-vect-stmts.c (vect_truncate_gather_scatter_offset): Same.
        * vr-values.c (vr_values::adjust_range_with_scev): Same.
        * wide-int.cc (wi::add_large): Same.
        (wi::mul_internal): Same.
        (wi::sub_large): Same.
        (wi::divmod_internal): Same.
        * wide-int.h: Change overflow type to overflow_type for neg, add,
        mul, smul, umul, div_trunc, div_floor, div_ceil, div_round,
        mod_trunc, mod_ceil, mod_round, add_large, sub_large,
        mul_internal, divmod_internal.
        (overflow_type): New enum.
        (accumulate_overflow): New.

2018-07-06  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

        * tree-ssa-phiopt.c (cond_removal_in_popcount_pattern): New.
        (tree_ssa_phiopt_worker): Call cond_removal_in_popcount_pattern.

2018-07-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

        * tree-ssa-loop-niter.c (number_of_iterations_popcount): If popcount
        argument is checked for zero before entering loop, avoid checking again.

2018-07-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

        * gimplify.h (generic_expr_could_trap_p): Set as global function.
        * gimplify.h (generic_expr_could_trap_p): Likwise.
        * tree-scalar-evolution.c (expression_expensive_p): Handle COND_EXPR.

2018-07-06  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86401
        * fold-const.c (fold_binary_loc) <case BIT_AND_EXPR>: Move the
        ((A & N) + B) & M -> (A + B) & M etc. optimization into ...
        (fold_bit_and_mask): ... here.  New helper function for match.pd.
        * fold-const.h (fold_bit_and_mask): Declare.
        * match.pd (((A & N) + B) & M -> (A + B) & M): New optimization.

2018-07-06  Peter Bergner  <bergner@linux.ibm.com>

        PR target/86324
        * target.def (translate_mode_attribute): New hook.
        * targhooks.h (default_translate_mode_attribute): Declare.
        * targhooks.c (default_translate_mode_attribute): New function.
        * doc/tm.texi.in (TARGET_TRANSLATE_MODE_ATTRIBUTE): New hook.
        * doc/tm.texi: Regenerate.
        * config/rs6000/rs6000.c (TARGET_TRANSLATE_MODE_ATTRIBUTE): Define.
        (rs6000_translate_mode_attribute): New function.

2018-07-06  Paul Koning  <ni1d@arrl.net>

        * doc/md.texi (define_split): Document DONE and FAIL.
        (define_peephole2): Ditto.

2018-07-05  Jeff Law  <law@redhat.com>

        PR tree-optimization/86010
        * tree-ssa-dse.c (compute_trims): More aggressively trim at
        both the head and tail of mem* and str* calls.

2018-07-05  Jim Wilson  <jimw@sifive.com>

        * config.gcc (riscv*-*-*): When setting xlen, handle riscv-*.

2018-07-05  Indu Bhagat  <indu.bhagat@oracle.com>

        * config/aarch64/aarch64-simd.md: correct flags text for
        MIN_EXPR replacement.

2018-07-05  James Clarke  <jrtc27@jrtc27.com>

        * configure: Regenerated.

2018-07-05  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-c.c: Map ALTIVEC_BUILTIN_VEC_UNPACKH for
        float argument to VSX_BUILTIN_DOUBLEH_V4SF.
        Map ALTIVEC_BUILTIN_VEC_UNPACKL for float argument to
        VSX_BUILTIN_DOUBLEL_V4SF.

2018-07-05  Martin Sebor  <msebor@redhat.com>

        PR c++/86400
        * tree-ssa-strlen.c (maybe_set_strlen_range): Use type size rather
        than its domain to compute its the upper bound of a char array.

2018-07-05  Nathan Sidwell  <nathan@acm.org>

        Replace NO_IMPLICIT_EXTERN_C with SYSTEM_IMPLICIT_EXTERN_C.
        * doc/cpp.texi: Update comment.
        * doc/tm.texi: Rebuilt.
        * doc/tm.texi.in (NO_IMPLICIT_EXTERN_C): Replace with ...
        (SYSTEM_IMPLICIT_EXTERN_C): ... this, opposite sense.
        * doc/extend.texi (Backwards Compatibility): Clarify it is system
        headers affected by extern "C".
        * system.h: Poison NO_IMPLICIT_EXTERN_C.
        * config/alpha/alpha.h, config/arm/uclinux-elf.h,
        config/bfin/elf.h, config/cris/cris.h, config/darwin.h,
        config/dragonfly.h, config/freebsd.h, config/gnu-user.h,
        config/i386/cygming.h, config/i386/djgpp.h, config/i386/nto.h,
        config/ia64/hpux.h, config/lm32/lm32.h, config/lm32/uclinux-elf.h,
        config/lynx.h, config/mips/elf.h, config/mmix/mmix.h,
        config/netbsd.h, config/pa/pa-hpux.h, config/powerpcspe/sysv4.h,
        config/riscv/elf.h, config/rs6000/sysv4.h, config/rtems.h,
        config/s390/tpf.h, config/sh/newlib.h, config/sol2.h,
        config/sparc/openbsd64.h, config/sparc/sp-elf.h,
        config/sparc/sp64-elf.h, config/spu/spu.h,
        config/stormy16/stormy16.h, config/v850/v850.h,
        config/visium/visium.h, config/vx-common.h, config/xtensa/elf.h: Don't
        define NO_IMPLICIT_EXTERN_C.
        * config/rs6000/aix.h: Set SYSTEM_IMPLICIT_EXTERN_C.

2018-07-05  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/arm.c (arm_can_change_mode_class): Use GET_MODE_UNIT_SIZE
        instead of GET_MODE_SIZE when comparing Units.

2018-07-05  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * rtlanal.c (set_noop_p): Constrain on mode change,
        include hard-reg-set.h

2018-07-05  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64.c (aarch64_expand_movmem): Fix mode size.

2018-07-05  Jakub Jelinek  <jakub@redhat.com>

        Revert
        2018-07-04  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR sanitizer/84250
        * config/gnu-user.h (LIBASAN_EARLY_SPEC): Pass -lstdc++ for static
        libasan.
        * gcc.c: Do not pass LIBUBSAN_SPEC if ASan is enabled with UBSan.

2018-07-04  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR sanitizer/84250
        * config/gnu-user.h (LIBASAN_EARLY_SPEC): Pass -lstdc++ for static
        libasan.
        * gcc.c: Do not pass LIBUBSAN_SPEC if ASan is enabled with UBSan.

2018-07-04  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/86380
        * expmed.c (choose_multiplier): Fix incorrect comparison with mask.

2018-07-04  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (extract_range_from_binary_expr_1): Initialize
        neg_*_op* variables.

2018-07-04  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c: Define
        max_ratio_for_speed and max_ratio_for_size constants.

2018-07-04  Denys Vlasenko  <dvlasenk@redhat.com>
            Martin Liska  <mliska@suse.cz>

        PR middle-end/66240
        PR target/45996
        PR c/84100
        * common.opt: Rename align options with 'str_' prefix.
        * common/config/i386/i386-common.c (set_malign_value): New
        function.
        (ix86_handle_option): Use it to set -falign-* options/
        * config/aarch64/aarch64-protos.h (struct tune_params): Change
        type from int to string.
        * config/aarch64/aarch64.c: Update default values from int
        to string.
        * config/alpha/alpha.c (alpha_override_options_after_change):
        Likewise.
        * config/arm/arm.c (arm_override_options_after_change_1): Likewise.
        * config/i386/dragonfly.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
        max skip conditionally.
        * config/i386/freebsd.h (SUBALIGN_LOG): New.
        (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
        max skip conditionally.
        * config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
        max skip conditionally.
        * config/i386/gnu-user.h (SUBALIGN_LOG): New.
        (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
        max skip conditionally.
        * config/i386/i386.c (struct ptt): Change type from int to
        string.
        (ix86_default_align): Set default values.
        * config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Print
        max skip conditionally.
        * config/i386/iamcu.h (SUBALIGN_LOG): New.
        (ASM_OUTPUT_MAX_SKIP_ALIGN):
        * config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN):
        * config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
        max skip conditionally.
        * config/i386/openbsdelf.h (SUBALIGN_LOG): New.
        (ASM_OUTPUT_MAX_SKIP_ALIGN) Print max skip conditionally.:
        * config/i386/x86-64.h (SUBALIGN_LOG): New.
        (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
        max skip conditionally.
        (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
        * config/ia64/ia64.c (ia64_option_override): Set default values
        for alignment options.
        * config/m68k/m68k.c: Handle new str_align_* options.
        * config/mips/mips.c (mips_set_compression_mode): Change
        type of constants.
        (mips_option_override): Set default values for options.
        * config/powerpcspe/powerpcspe.c (rs6000_option_override_internal):
        Likewise.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Likewise.
        * config/rx/rx.c (rx_option_override): Likewise.
        * config/rx/rx.h (JUMP_ALIGN): Use align_jumps_log.
        (LABEL_ALIGN): Use align_labels_log.
        (LOOP_ALIGN): Use align_loops_align.
        * config/s390/s390.c (s390_asm_output_function_label): Use new
        macros.
        * config/sh/sh.c (sh_override_options_after_change):
        Change type of constants.
        * config/spu/spu.c (spu_sched_init): Likewise.
        * config/sparc/sparc.c (sparc_option_override): Set default
        values for options.
        * config/visium/visium.c (visium_option_override): Likewise.
        * config/visium/visium.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Do not
        emit p2align format with last argument if it's not needed.
        * doc/invoke.texi: Document extended format of -falign-*.
        * final.c: Use align_labels alignment.
        * flags.h (struct target_flag_state): Change type to use
        align_flags.
        (struct align_flags_tuple): New.
        (struct align_flags): Likewise.
        (align_loops_log): Redefine macro to use new types.
        (align_loops_max_skip): Redefine macro to use new types.
        (align_jumps_log): Redefine macro to use new types.
        (align_jumps_max_skip): Redefine macro to use new types.
        (align_labels_log): Redefine macro to use new types.
        (align_labels_max_skip): Redefine macro to use new types.
        (align_functions_log): Redefine macro to use new types.
        (align_loops): Redefine macro to use new types.
        (align_jumps): Redefine macro to use new types.
        (align_labels): Redefine macro to use new types.
        (align_functions): Redefine macro to use new types.
        (align_functions_max_skip): Redefine macro to use new types.
        (align_loops_value): New macro.
        (align_jumps_value): New macro.
        (align_labels_value): New macro.
        (align_functions_value): New macro.
        * function.c (invoke_set_current_function_hook): Propagate
        alignment values from flags to global variables default in
        topleev.h.
        * ipa-icf.c (sem_function::equals_wpa): Use
        cl_optimization_option_eq instead of memcmp.
        * lto-streamer.h (cl_optimization_stream_out): Support streaming
        of string types.
        (cl_optimization_stream_in): Likewise.
        * optc-save-gen.awk: Support strings in cl_optimization.
        * opth-gen.awk: Likewise.
        * opts.c (finish_options): Remove error checking of invalid
        value ranges.
        (MAX_CODE_ALIGN): Remove.
        (MAX_CODE_ALIGN_VALUE): Likewise.
        (parse_and_check_align_values): New function.
        (check_alignment_argument): Likewise.
        (common_handle_option): Use check_alignment_argument.
        * opts.h (parse_and_check_align_values): Declare.
        * toplev.c (init_alignments): Remove.
        (read_log_maxskip): New.
        (parse_N_M): Likewise.
        (parse_alignment_opts): Likewise.
        (backend_init_target): Remove usage of init_alignments.
        * toplev.h (parse_alignment_opts): Declare.
        * tree-streamer-in.c (streamer_read_tree_bitfields): Add new
        argument.
        * tree-streamer-out.c (streamer_write_tree_bitfields): Likewise.
        * tree.c (cl_option_hasher::equal): New.
        * varasm.c: Use new global macros.

2018-07-04  Denys Vlasenko  <dvlasenk@redhat.com>

        * config/i386/dragonfly.h: (ASM_OUTPUT_MAX_SKIP_ALIGN):
        Use a simpler align directive also if MAXSKIP = ALIGN-1.
        * config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
        * config/i386/freebsd.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Remove "If N
        is large, do at least 8 byte alignment" code. Add SUBALIGN_LOG
        define. Use a simpler align directive also if MAXSKIP = ALIGN-1.
        * config/i386/gnu-user.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/iamcu.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/openbsdelf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
        * config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.

2018-07-04  Martin Liska  <mliska@suse.cz>
            Jonathan Wakely  <jwakely@redhat.com>

        * coverage.c: Use correct type.
        * doc/invoke.texi: Language correction.

2018-07-03  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85620
        * config/i386/i386.c (rest_of_insert_endbranch): Also generate
        ENDBRANCH for non-tail call which may return via indirect branch.
        * doc/extend.texi: Document indirect_return attribute.

2018-07-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86274
        * gimple-ssa-sprintf.c (fmtresult::type_max_digits): Verify
        precondition.
        (format_floating): Correct handling of infinities and NaNs.

2018-07-03  Martin Sebor  <msebor@redhat.com>

        * print-tree.c (print_real_cst): New function.
        (print_node_brief): Call it.
        (print_node): Ditto.

2018-07-03  Jeff Law  <law@redhat.com>

        * config/h8300/h8300.md (logical<mode>3_sn, logical<mode>3): Merge
        into a single pattern.

        * config/h8300/h8300.md (ors code_iterator): New.
        (bsetqi_msx, bnotqi_msx patterns and splitters): Consolidate into
        a single pattern and single splitter.
        (bsethi_msx, bnothi_msx patterns): Consolidate into a single pattern.
        (iorqi3_1, xorqi3_1): Likewise.
        (iorqi3, xorqi3 expanders): Similarly.

        * config/h8300/h8300.md (movmd_internal_normal): Consolidated with
        (movmd_internal) into a single pattern using the P mode iterator.
        (movmd splitters): Similarly.
        (stpcpy_internal_normal, stpcpy_internal): Similarly for thes patterns.
        (movsd splitters): Similarly.

        * config/h8300/h8300.c (h8300_insn_length_from_table): Consolidate
        ADDB, ADDW and ADDL into a single ADD attribute which selects the
        right table based on the size of the operand.
        * config/h8300/h8300.md (length_table): Corresponding changes. All
        references to "addb", "addw" and "addl" changed to "add".
        (btst patterns): Merge two variants into a single pattern.
        (tstqi, tsthi): Likewise.
        (addhi3_incdec, addsi3_incdec): Likewise.
        (subhi3_h8300hs, subsi3_h8300hs): Likewise.
        (mulhi3, mulsi3): Likewise.
        (udivhi3, udivsi3): Likewise.
        (divhi3, divsi3): Likewise.
        (andorqi3, andorhi3, andorsi3): Likewise.

2018-07-03  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85694
        * config/i386/sse.md (uavg<mode>3_ceil): New expander.
        (<sse2_avx2>_uavg<mode>3<mask_name>): Simplify expander.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/85694
        * config/aarch64/iterators.md (HADD, RHADD): New int iterators.
        (u): Handle UNSPEC_SHADD, UNSPEC_UHADD, UNSPEC_SRHADD and
        UNSPEC_URHADD.
        * config/aarch64/aarch64-simd.md (<u>avg<mode>3_floor)
        (<u>avg<mode>3_ceil): New patterns.

2018-07-03  David Malcolm  <dmalcolm@redhat.com>

        * gcc.dg/vect/slp-perm-1.c: Remove "note: " prefix from
        scan-tree-dump directive.
        * gcc.dg/vect/slp-perm-2.c: Likewise.
        * gcc.dg/vect/slp-perm-3.c: Likewise.
        * gcc.dg/vect/slp-perm-5.c: Likewise.
        * gcc.dg/vect/slp-perm-6.c: Likewise.
        * gcc.dg/vect/slp-perm-7.c: Likewise.
        * gcc.dg/vect/slp-perm-8.c: Likewise.

2018-07-03  Marek Polacek  <polacek@redhat.com>

        PR middle-end/86202
        * gimple-fold.c (size_must_be_zero_p): Check the type of the size.

2018-07-03  Richard Biener  <rguenther@suse.de>

        PR ipa/86389
        * tree-ssa-structalias.c (find_func_clobbers): Properly
        handle indirect calls.

2018-07-03  Jeff Law  <law@redhat.com>

        * config/h8300/h8300.md (HSI, QHSI, QHSIF): New mode iterators.
        (shifts): New code iterator.
        (movqi, movhi, movsi, movsf expanders): Consolidate into a single
        expander.  Fix HImode handling on H8/SX.
        (addqi3, addhi3, addsi3 expanders): Consolidate into a single expander.
        (subqi3, subhi3, subsi3 expanders): Likewise.
        (andqi3, andhi3, andsi3 expanders): Likewise.
        (iorqi3, iorhi3, iorsi3 expanders): Likewise.
        (xorqi3, xorhi3, xorsi3 expanders): Likewise.
        (negqi2, neghi2, negsi2, negsf2 expanders): Likewise.
        (one_cmplqi2, one_cmplhi2, one_cmplsi2): Likewise.
        (zero_extendqihi2, zero_extendqisi2): Likewise.
        (extendqihi2, extendqisi2): Likewise.
        (rotlqi3, rotlhi3, rotlsi3): Likewise.
        (neghi2_h8300, negsi2_h8300): Likewise for these patterns.
        (rotlqi3_1, rotlhi3_1): Likewise.
        (logicalhi3_sn, logicalsi3_sn): Likewise.
        (logicalhi3, logicalsi3): Likewise.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_recog_rotate_pattern)
        (vect_recog_vector_vector_shift_pattern, vect_recog_divmod_pattern)
        (vect_recog_mixed_size_cond_pattern, adjust_bool_pattern_cast)
        (adjust_bool_pattern, vect_recog_bool_pattern): Pass the vector
        type to append_pattern_def_seq instead of creating a stmt_vec_info
        directly.
        (build_mask_conversion): Likewise.  Remove vinfo argument.
        (vect_add_conversion_to_patterm): Likewise, renaming to...
        (vect_add_conversion_to_pattern): ...this.
        (vect_recog_mask_conversion_pattern): Update call to
        build_mask_conversion.  Pass the vector type to
        append_pattern_def_seq here too.
        (vect_recog_gather_scatter_pattern): Update call to
        vect_add_conversion_to_pattern.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (new_pattern_def_seq): Delete.
        (vect_recog_dot_prod_pattern, vect_recog_sad_pattern)
        (vect_recog_widen_op_pattern, vect_recog_over_widening_pattern)
        (vect_recog_rotate_pattern, vect_synth_mult_by_constant): Don't set
        STMT_VINFO_PATTERN_DEF_SEQ to null here.
        (vect_recog_pow_pattern, vect_recog_vector_vector_shift_pattern)
        (vect_recog_mixed_size_cond_pattern, vect_recog_bool_pattern): Use
        append_pattern_def_seq instead of new_pattern_def_seq.
        (vect_recog_divmod_pattern): Do both of the above.
        (vect_pattern_recog_1): Assert that STMT_VINO_PATTERN_DEF_SEQ
        is null.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_recog_dot_prod_pattern):
        (vect_recog_sad_pattern, vect_recog_widen_op_pattern)
        (vect_recog_widen_mult_pattern, vect_recog_pow_pattern):
        (vect_recog_widen_sum_pattern, vect_recog_over_widening_pattern)
        (vect_recog_average_pattern, vect_recog_cast_forwprop_pattern)
        (vect_recog_widen_shift_pattern, vect_recog_rotate_pattern)
        (vect_recog_vector_vector_shift_pattern, vect_synth_mult_by_constant)
        (vect_recog_mult_pattern, vect_recog_divmod_pattern)
        (vect_recog_mixed_size_cond_pattern, vect_recog_bool_pattern)
        (vect_recog_mask_conversion_pattern): Replace vec<gimple *>
        parameter with a single stmt_vec_info.
        (vect_recog_func_ptr): Likewise.
        (vect_recog_gather_scatter_pattern): Likewise, folding in...
        (vect_try_gather_scatter_pattern): ...this.
        (vect_pattern_recog_1): Remove stmts_to_replace and just pass
        the stmt_vec_info of the statement to be matched.  Don't clear
        STMT_VINFO_RELATED_STMT.
        (vect_pattern_recog): Update call accordingly.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/85694
        * doc/md.texi (avgM3_floor, uavgM3_floor, avgM3_ceil)
        (uavgM3_ceil): Document new optabs.
        * doc/sourcebuild.texi (vect_avg_qi): Document new target selector.
        * internal-fn.def (IFN_AVG_FLOOR, IFN_AVG_CEIL): New internal
        functions.
        * optabs.def (savg_floor_optab, uavg_floor_optab, savg_ceil_optab)
        (savg_ceil_optab): New optabs.
        * tree-vect-patterns.c (vect_recog_average_pattern): New function.
        (vect_vect_recog_func_ptrs): Add it.
        * tree-vect-stmts.c (vectorizable_call): Get the type of the zero
        constant directly from the associated lhs.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_split_statement): New function.
        (vect_convert_input): Use it to try to split an existing cast.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        * poly-int.h (print_hex): New function.
        * dumpfile.h (dump_dec, dump_hex): Declare.
        * dumpfile.c (dump_dec, dump_hex): New poly_wide_int functions.
        * tree-vectorizer.h (_stmt_vec_info): Add min_output_precision,
        min_input_precision, operation_precision and operation_sign.
        * tree-vect-patterns.c (vect_get_range_info): New function.
        (vect_same_loop_or_bb_p, vect_single_imm_use)
        (vect_operation_fits_smaller_type): Delete.
        (vect_look_through_possible_promotion): Add an optional
        single_use_p parameter.
        (vect_recog_over_widening_pattern): Rewrite to use new
        stmt_vec_info infomration.  Handle one operation at a time.
        (vect_recog_cast_forwprop_pattern, vect_narrowable_type_p)
        (vect_truncatable_operation_p, vect_set_operation_type)
        (vect_set_min_input_precision): New functions.
        (vect_determine_min_output_precision_1): Likewise.
        (vect_determine_min_output_precision): Likewise.
        (vect_determine_precisions_from_range): Likewise.
        (vect_determine_precisions_from_users): Likewise.
        (vect_determine_stmt_precisions, vect_determine_precisions): Likewise.
        (vect_vect_recog_func_ptrs): Put over_widening first.
        Add cast_forwprop.
        (vect_pattern_recog): Call vect_determine_precisions.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_mark_pattern_stmts): Remove pattern
        statements that have been replaced by further pattern statements.
        (vect_pattern_recog_1): Clear STMT_VINFO_PATTERN_DEF_SEQ on failure.

2018-07-03  Richard Biener  <rguenther@suse.de>

        * tree-vect-stmts.c (vect_is_simple_use): Consolidate dumping,
        always set *dt.  Dump vectype in vectype overload.
        * dumpfile.h (dump_gimple_expr): New function.
        (dump_gimple_expr_loc): Likewise.
        * dumpfile.c (dump_gimple_expr): New function.
        (dump_gimple_expr_loc): Likewise.

2018-07-02  Jeff Law  <law@redhat.com>

        * config/h8300/h8300.md (movqi_h8300, movqi_h8300hs): Consolidate
        the H8/300, H8/300H and H8/S variants into a single pattern.
        (movhi_h8300, movqi_h8300hs): Similarly.
        (pushqi_h8300hs, pushhi_h8300hs): Consolidate into a single pattern.
        (QHI mode iterator): New.

        * config/h8300/h8300.md: Remove trailing whitespace.

2018-07-02  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (riscv_expand_epilogue): Use emit_jump_insn
        instead of emit_insn for interrupt returns.
        * config/riscv/riscv.md (riscv_met): Add (return) to rtl.
        (riscv_sret, riscv_uret): Likewise.

2018-07-02  David Malcolm  <dmalcolm@redhat.com>

        * pretty-print.c (selftest::test_pp_format): Move save and restore
        of quotes to class auto_fix_quotes, and add an instance.
        * selftest.c: Include "intl.h".
        (selftest::auto_fix_quotes::auto_fix_quotes): New ctor.
        (selftest::auto_fix_quotes::~auto_fix_quotes): New dtor.
        * selftest.h (selftest::auto_fix_quotes): New class.

2018-07-02  Richard Henderson  <richard.henderson@linaro.org>

        * config/aarch64/aarch64-protos.h, config/aarch64/aarch64.c
        (aarch64_sve_prepare_conditional_op): Remove.
        * config/aarch64/aarch64-sve.md (cond_<SVE_INT_BINARY><SVE_I>):
        Allow aarch64_simd_reg_or_zero as select operand; remove
        the aarch64_sve_prepare_conditional_op call.
        (cond_<SVE_INT_BINARY_SD><SVE_SDI>): Likewise.
        (cond_<SVE_COND_FP_BINARY><SVE_F>): Likewise.
        (*cond_<SVE_INT_BINARY><SVE_I>_z): New pattern.
        (*cond_<SVE_INT_BINARY_SD><SVE_SDI>_z): New pattern.
        (*cond_<SVE_COND_FP_BINARY><SVE_F>_z): New pattern.
        (*cond_<SVE_INT_BINARY><SVE_I>_any): New pattern.
        (*cond_<SVE_INT_BINARY_SD><SVE_SDI>_any): New pattern.
        (*cond_<SVE_COND_FP_BINARY><SVE_F>_any): New pattern
        and a splitters to match all of the *_any patterns.
        * config/aarch64/predicates.md (aarch64_sve_any_binary_operator): New.

        * config/aarch64/iterators.md (SVE_INT_BINARY_REV): Remove.
        (SVE_COND_FP_BINARY_REV): Remove.
        (sve_int_op_rev, sve_fp_op_rev): New.
        * config/aarch64/aarch64-sve.md (*cond_<SVE_INT_BINARY><SVE_I>_0): New.
        (*cond_<SVE_INT_BINARY_SD><SVE_SDI>_0): New.
        (*cond_<SVE_COND_FP_BINARY><SVE_F>_0): New.
        (*cond_<SVE_INT_BINARY><SVE_I>_2): Rename, add movprfx alternative.
        (*cond_<SVE_INT_BINARY_SD><SVE_SDI>_2): Similarly.
        (*cond_<SVE_COND_FP_BINARY><SVE_F>_2): Similarly.
        (*cond_<SVE_INT_BINARY><SVE_I>_3): Similarly; use sve_int_op_rev.
        (*cond_<SVE_INT_BINARY_SD><SVE_SDI>_3): Similarly.
        (*cond_<SVE_COND_FP_BINARY><SVE_F>_3): Similarly; use sve_fp_op_rev.

        * config/aarch64/aarch64-sve.md (cond_<SVE_COND_FP_BINARY><SVE_F>):
        Remove match_dup 1 from the inner unspec.
        (*cond_<SVE_COND_FP_BINARY><SVE_F>): Likewise.

        * config/aarch64/aarch64.md (movprfx): New attr.
        (length): Default movprfx to 8.
        * config/aarch64/aarch64-sve.md (*mul<SVE_I>3): Add movprfx alt.
        (*madd<SVE_I>, *msub<SVE_I): Likewise.
        (*<su>mul<SVE_I>3_highpart): Likewise.
        (*<SVE_INT_BINARY_SD><SVE_SDI>3): Likewise.
        (*v<ASHIFT><SVE_I>3): Likewise.
        (*<su><MAXMIN><SVE_I>3): Likewise.
        (*<su><MAXMIN><SVE_F>3): Likewise.
        (*fma<SVE_F>4, *fnma<SVE_F>4): Likewise.
        (*fms<SVE_F>4, *fnms<SVE_F>4): Likewise.
        (*div<SVE_F>4): Likewise.

2018-07-02  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_recog_widen_shift_pattern): Fix typo
        in dump string.

2018-07-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86363
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Check the
        memset argument refers to a non-variable address.

2018-07-02  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (extract_range_from_binary_expr_1): Abstract a lot of the
        {PLUS,MINUS}_EXPR code to...
        (adjust_symbolic_bound): ...here,
        (combine_bound): ...here,
        (set_value_range_with_overflow): ...and here.

2018-07-02  Aldy Hernandez  <aldyh@redhat.com>

        * tree-vrp.c (extract_range_from_unary_expr): Abstract ABS_EXPR
        code...
        (extract_range_from_abs_expr): ...here.

2018-07-02  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/i386.c (ix86_finalize_stack_frame_flags): Do not overrule
        -fno-omit-frame-pointer when not optimizing.

2018-07-02  Martin Liska  <mliska@suse.cz>

        PR ipa/86279
        * ipa-pure-const.c (malloc_candidate_p): Revert usage of ::get.
        (propagate_nothrow): Likewise.

2018-07-02  Martin Liska  <mliska@suse.cz>

        PR ipa/86323
        * ipa-inline.c (early_inliner): Revert wrongly added ::get call.

2018-07-02  David Malcolm  <dmalcolm@redhat.com>

        * dumpfile.c (dump_generic_expr_loc): Undo removal of this
        function in r262149, changing "loc" param from source_location to
        const dump_location_t &.
        * dumpfile.h (dump_generic_expr_loc): Undo removal of this
        declaration, as above.

2018-07-01  Paul Koning  <ni1d@arrl.net>

        * common/config/pdp11/pdp11-common.c (pdp11_handle_option): Handle
        -munit-asm, -mgnu-asm, -mdec-asm.
        * config/pdp11/pdp11-protos.h (pdp11_gen_int_label): New.
        (pdp11_output_labelref): New.
        (pdp11_output_def): New.
        (pdp11_output_addr_vec_elt): New.
        * config/pdp11/pdp11.c: Use tab between opcode and operands.  Use
        %# and %@ format codes.
        (pdp11_option_override): New.
        (TARGET_ASM_FILE_START_FILE_DIRECTIVE): Define.
        (pdp11_output_ident): New.
        (pdp11_asm_named_section): New.
        (pdp11_asm_init_sections): New.
        (pdp11_file_start): New.
        (pdp11_file_end): New.
        (output_ascii): Use .ascii/.asciz for -mdec-asm.
        (pdp11_asm_print_operand): Update %# and %$ for -mdec-asm.  Add
        %o, like %c but octal.
        (pdp11_option_override): New.
        * config/pdp11/pdp11.h (TEXT_SECTION_ASM_OP): Update for
        -mdec-asm.
        (DATA_SECTION_ASM_OP): Ditto.
        (READONLY_DATA_SECTION_ASM_OP): New.
        (IS_ASM_LOGICAL_LINE_SEPARATOR): New.
        (ASM_GENERATE_INTERNAL_LABEL): Use new function.
        (ASM_OUTPUT_LABELREF): Ditto.
        (ASM_OUTPUT_DEF): Ditto.
        (ASM_OUTPUT_EXTERNAL): New.
        (ASM_OUTPUT_SOURCE_FILENAME): New.
        (ASM_OUTPUT_ADDR_VEC_ELT): Use new function.
        (ASM_OUTPUT_SKIP): Update for -mdec-asm.
        * config/pdp11/pdp11.md: Use tab between opcode and operands.  Use
        %# and %@ format codes.
        * config/pdp11/pdp11.opt (mgnu-asm): New.
        (mdec-asm): Conflicts with -mgnu-asm and -munix-asm.
        (munix-asm): Conflicts with -mdec-asm and -mgnu-asm.
        * doc/invoke.txt (PDP-11 Options): Add -mgnu-asm.

2018-07-01  Aldy Hernandez  <aldyh@redhat.com>

        * tree-ssa-threadupdate.c (mark_threaded_blocks): Avoid
        dereferencing path[] beyond its length.
        (debug_path): New.
        (debug_all_paths): New.
        (rewire_first_differing_edge): New.
        (adjust_paths_after_duplication): New.
        (duplicate_thread_path): Call adjust_paths_after_duplication.
        Add new argument.
        (thread_through_all_blocks): Add new argument to
        duplicate_thread_path.

2018-06-30  Jim Wilson  <jimw@sifive.com>

        * config/riscv/predicates.md (p2m1_shift_operand): New.
        (high_mask_shift_operand): New.
        * config/riscv/riscv.md (lshrsi3_zero_extend_3+1): New combiner
        pattern using p2m1_shift_operand.
        (lshsi3_zero_extend_3+2): New combiner pattern using
        high_mask_shift_operand.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_get_external_def_edge): New function,
        split out from...
        (vect_recog_rotate_pattern): ...here.
        (vect_convert_input): Try to insert casts of invariants in the
        preheader.
        * tree-vect-loop-manip.c (vect_loop_versioning): Don't require the
        preheader to be empty.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (append_pattern_def_seq): Take an optional
        vector type.  If given, install it in the new statement's
        STMT_VINFO_VECTYPE.
        (vect_element_precision): New function.
        (vect_unpromoted_value): New struct.
        (vect_unpromoted_value::vect_unpromoted_value): New function.
        (vect_unpromoted_value::set_op): Likewise.
        (vect_look_through_possible_promotion): Likewise.
        (vect_joust_widened_integer, vect_joust_widened_type): Likewise.
        (vect_widened_op_tree, vect_convert_input): Likewise.
        (vect_convert_inputs, vect_convert_output): Likewise.
        (vect_recog_dot_prod_pattern): Use vect_look_through_possible_promotion
        to handle the optional cast of the multiplication result and
        vect_widened_op_tree to detect the widened multiplication itself.
        Do not require the input and output of promotion casts to have
        the same sign, but base the signedness of the operation on the
        input rather than the result.  If the pattern includes two
        promotions, check that those promotions have the same sign.
        Do not restrict the MULT_EXPR handling to a double-width result;
        handle quadruple-width results and wider.  Use vect_convert_inputs
        to convert the inputs to the common type.
        (vect_recog_sad_pattern):  Use vect_look_through_possible_promotion
        to handle the optional cast of the ABS result.  Also allow a sign
        change or a sign extension between the ABS and MINUS.
        Use vect_widened_op_tree to detect the widened subtraction and use
        vect_convert_inputs to convert the inputs to the common type.
        (vect_handle_widen_op_by_const): Delete.
        (vect_recog_widen_op_pattern): New function.
        (vect_recog_widen_mult_pattern): Use it.
        (vect_recog_widen_shift_pattern): Likewise.
        (vect_recog_widen_sum_pattern): Use
        vect_look_through_possible_promotion to handle the promoted
        PLUS_EXPR operand.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

        * gimple-iterator.c (gsi_for_stmt): Add a new overload that takes
        the containing gimple_seq *.
        * gimple-iterator.h (gsi_for_stmt): Declare it.
        * tree-vect-patterns.c (vect_recog_dot_prod_pattern)
        (vect_recog_sad_pattern, vect_recog_widen_sum_pattern)
        (vect_recog_widen_shift_pattern, vect_recog_rotate_pattern)
        (vect_recog_vector_vector_shift_pattern, vect_recog_divmod_pattern)
        (vect_recog_mask_conversion_pattern): Remove STMT_VINFO_IN_PATTERN_P
        checks.
        (vect_init_pattern_stmt, vect_set_pattern_stmt): New functions,
        split out from...
        (vect_mark_pattern_stmts): ...here.  Handle cases in which the
        statement being replaced is part of an existing pattern
        definition sequence, inserting the new pattern statements before
        the original one.
        (vect_pattern_recog_1): Don't return a bool.  If the statement
        is already part of a pattern, instead apply pattern matching
        to the pattern definition statements.  Don't clear the
        STMT_VINFO_RELATED_STMT if is_pattern_stmt_p.
        (vect_pattern_recog): Don't break after the first match;
        continue processing the pattern definition statements instead.
        Don't bail out for STMT_VINFO_IN_PATTERN_P here.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_reassociating_reduction_p): New function.
        (vect_recog_dot_prod_pattern, vect_recog_sad_pattern)
        (vect_recog_widen_sum_pattern): Use it.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-loop.c (vectorizable_reduction): Assert that the
        phi is not a pattern statement and has not been replaced by
        a pattern statement.
        * tree-vect-patterns.c (type_conversion_p): Don't check
        STMT_VINFO_IN_PATTERN_P.
        (vect_recog_vector_vector_shift_pattern): Likewise.
        (vect_recog_dot_prod_pattern): Expect vect_is_simple_use to return
        the pattern statement rather than the original statement; check
        directly for a WIDEN_MULT_EXPR here.
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Expect
        vect_is_simple_use to return the pattern statement rather
        than the original statement; use is_pattern_stmt_p to check
        for such a pattern statement.
        * tree-vect-stmts.c (process_use): Expect vect_is_simple_use
        to return the pattern statement rather than the original statement;
        don't do the same transformation here.
        (vect_is_simple_use): If the defining statement has been replaced
        by a pattern statement, return the pattern statement instead.
        Remove the corresponding (local) transformation from the vectype
        overload.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (vect_is_simple_use): Move the gimple ** to the
        end and default to null.
        * tree-vect-loop.c (vect_create_epilog_for_reduction)
        (vectorizable_reduction): Update calls accordingly, dropping the
        gimple ** argument if the passed-back statement isn't needed.
        * tree-vect-patterns.c (vect_get_internal_def, type_conversion_p)
        (vect_recog_rotate_pattern): Likewise.
        (vect_recog_mask_conversion_pattern): Likewise.
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Likewise.
        (vect_mask_constant_operand_p): Likewise.
        * tree-vect-stmts.c (is_simple_and_all_uses_invariant, process_use):
        (vect_model_simple_cost, vect_get_vec_def_for_operand): Likewise.
        (get_group_load_store_type, get_load_store_type): Likewise.
        (vect_check_load_store_mask, vect_check_store_rhs): Likewise.
        (vectorizable_call, vectorizable_simd_clone_call): Likewise.
        (vectorizable_conversion, vectorizable_assignment): Likewise.
        (vectorizable_shift, vectorizable_operation): Likewise.
        (vectorizable_store, vect_is_simple_cond): Likewise.
        (vectorizable_condition, vectorizable_comparison): Likewise.
        (get_same_sized_vectype, vect_get_mask_type_for_stmt): Likewise.
        (vect_is_simple_use): Rename the def_stmt argument to def_stmt_out
        and move it to the end.  Cope with null def_stmt_outs.

2018-06-30  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * Makefile.in (FLAGS_TO_PASS): Add RANLIB_FOR_TARGET.

2018-06-29  Jeff Law  <law@redhat.com>

        * config/v850/v850.c (v850_legitimate_address_p): Handle large
        displacements for TARGET_V850E2V3 and newer.
        (TARGET_LRA_P): Remove.  Defaults to LRA now.
        * config/v850/v850.md (sign23byte_load): Remove.
        (unsign23byte_load, sign23hword_load, unsign23hword_load): Likewise.
        (23word_load, 23byte_store, 23hword_store, 23word_store): Likewise.

2018-06-29  Martin Liska  <mliska@suse.cz>

        PR lto/85759
        * coverage.c (coverage_init): Mangle full path name.
        * doc/invoke.texi: Document the change.
        * gcov-io.c (mangle_path): New.
        * gcov-io.h (mangle_path): Likewise.
        * gcov.c (mangle_name): Use mangle_path for path mangling.

2018-06-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm.c (output_move_double): Don't allow STRD instructions
        if starting source register is not even.

2018-06-29  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86263
        * tree-switch-conversion.c (switch_decision_tree::try_switch_expansion):
        Make edge redirection.

2018-06-29  David Malcolm  <dmalcolm@redhat.com>

        * dumpfile.c (dump_loc): Add indentation based on scope depth.
        (dump_scope_depth): New variable.
        (get_dump_scope_depth): New function.
        (dump_begin_scope): New function.
        (dump_end_scope): New function.
        * dumpfile.h (get_dump_scope_depth): New declaration.
        (dump_begin_scope): New declaration.
        (dump_end_scope): New declaration.
        (class auto_dump_scope): New class.
        (AUTO_DUMP_SCOPE): New macro.
        * tree-vectorizer.h (DUMP_VECT_SCOPE): Reimplement in terms of
        AUTO_DUMP_SCOPE.

2018-06-29  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_analyze_data_ref_dependences): Assert
        compute_all_dependences succeeds.
        * tree-vect-loop.c (vect_get_datarefs_in_loop): Fail early if we
        exceed --param loop-max-datarefs-for-datadeps.

2018-06-29  Jakub Jelinek  <jakub@redhat.com>

        * config/rs6000/t-rs6000: Append rs6000-modes.h to TM_H.

2018-06-28  Uros Bizjak  <ubizjak@gmail.com>

        PR target/86348
        * config/i386/sse.md (*vec_extractv4si_0_zext_sse4): Use
        alternative 0 in preferred_for_speed attribute.

2018-06-28  Paul Koning  <ni1d@arrl.net>

        * config/pdp11/pdp11-protos.h (pdp11_shift_length): New function.
        * config/pdp11/pdp11.c (pdp11_shift_length): New function.
        * config/pdp11/pdp11.h (ADJUST_INSN_LENGTH): Remove.
        * config/pdp11/pdp11.md: Correct "length" attribute calculation
        for shift insn patterns.

2018-06-28  David Malcolm  <dmalcolm@redhat.com>

        * cgraph.c (cgraph_node::get_body): Replace assignments to
        "dump_file" with calls to set_dump_file.
        * dumpfile.c (alt_dump_file): Make static, and group with...
        (alt_flags): ...this definition.
        (dumps_are_enabled): New variable.
        (refresh_dumps_are_enabled): New function.
        (set_dump_file): New function.
        (set_alt_dump_file): New function.
        (gcc::dump_manager::dump_start): Replace assignments to
        "dump_file" and "alt_dump_file" with calls to set_dump_file and
        set_alt_dump_file.
        (gcc::dump_manager::dump_finish): Likewise.
        * dumpfile.h (alt_dump_file): Delete decl.
        (dumps_are_enabled): New variable decl.
        (set_dump_file): New function decl.
        (dump_enabled_p): Rewrite in terms of new "dumps_are_enabled"
        global.
        * tree-nested.c (lower_nested_functions): Replace assignments to
        "dump_file" with calls to set_dump_file.

2018-06-28  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-cfg.c (verify_gimple_in_cfg): Call verify_location on the
        goto_locus of each outgoing edge of each basic block.

2018-06-28  Richard Biener  <rguenther@suse.de>

        * dwarf2out.c (decl_scope_table): Remove.
        (push_decl_scope): Likewise.
        (pop_decl_scope): Likewise.
        (gen_type_die_for_member): Do not call push/pop_decl_scope.
        (gen_struct_or_union_type_die): Likewise.
        (gen_tagged_type_die): Likewise.
        (dwarf2out_init): Do not initialize decl_scope_table.
        (dwarf2out_c_finalize): Do not free it.

2018-06-28  Richard Biener  <rguenther@suse.de>

        * dwarf2out.c (gen_subprogram_die): Use is_unit_die when
        deciding whether to not re-use a DIE.

2018-06-28  Richard Biener  <rguenther@suse.de>

        * dwarf2out.c (gen_subprogram_die): Always re-use DIEs with an
        DW_AT_abstract_origin attribute.

2018-06-28  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (jump_table_cluster::can_be_handled):
        Use newly introduced constants.
        * tree-switch-conversion.h (struct jump_table_cluster):
        Define max_ratio_for_size and max_ratio_for_speed.

2018-06-28  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (jump_table_cluster::find_jump_tables):
        Add new checking assert to catch invalid state.
        (jump_table_cluster::can_be_handled): Handle single case
        clusters.
        (jump_table_cluster::is_beneficial): Bail out for such case.
        (bit_test_cluster::find_bit_tests):
        Add new checking assert to catch invalid state.
        (bit_test_cluster::can_be_handled): Handle single case
        clusters.
        (bit_test_cluster::is_beneficial): Bail out for such case.
        (switch_decision_tree::analyze_switch_statement):
        Fix comment.

2018-06-28  Martin Liska  <mliska@suse.cz>

        * common.opt: Introduce -completion option.
        * gcc.c (driver_handle_option): Handle it.
        (driver::main): Print completions if completion
        is set.
        * opt-suggestions.c (option_proposer::get_completions):
        New function.
        (option_proposer::suggest_completion): Likewise.
        (option_proposer::find_param_completions): Likewise.
        (verify_autocompletions): Likewise.
        (test_completion_valid_options): Likewise.
        (test_completion_valid_params): Likewise.
        (in_completion_p): Likewise.
        (empty_completion_p): Likewise.
        (test_completion_partial_match): Likewise.
        (test_completion_garbage): Likewise.
        (opt_proposer_c_tests): Likewise.
        * opt-suggestions.h: Declare new functions.
        * opts.c (common_handle_option): Handle OPT__completion_.
        * selftest-run-tests.c (selftest::run_tests): Add
        opt_proposer_c_tests.
        * selftest.c (assert_str_startswith): New.
        * selftest.h (assert_str_startswith): Likewise.
        (opt_proposer_c_tests): New.
        (ASSERT_STR_STARTSWITH): Likewise.

2018-06-28  Martin Liska  <mliska@suse.cz>

        * Makefile.in: Add opt-suggestions.o.
        * gcc-main.c: Include opt-suggestions.h.
        * gcc.c (driver::driver): Likewise.
        (driver::~driver): Remove m_option_suggestions.
        (driver::build_option_suggestions): Moved to option_proposer.
        (driver::suggest_option): Likewise.
        (driver::handle_unrecognized_options): Use option_proposer.
        * gcc.h (class driver): Add new memver m_option_proposer.
        * opt-suggestions.c: New file.
        * opt-suggestions.h: New file.

2018-06-28  Martin Liska  <mliska@suse.cz>

        * vec.h (class auto_string_vec): New (moved from auto_argvec).
        (auto_string_vec::~auto_string_vec): Likewise.

2018-06-28  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-inline.h (struct copy_body_data): Move remapping_type_depth and
        prevent_decl_creation_for_types fields up and add reset_location field.
        * tree-inline.c (remap_gimple_stmt): Force input_location on the new
        statement if id->reset_location is true.
        (copy_edges_for_bb): Do not set goto_locus on the new edges if
        id->reset_location is true.
        (copy_phis_for_bb): Force input_location on the arguments if
        id->reset_location is true.
        (expand_call_inline): Set id->reset_location if DECL_IGNORED_P
        is set on the function to be inlined.

2018-06-27  Stephan Bergmann  <sbergman@redhat.com>

        * doc/invoke.texi (Debugging Options): Add -gsplit-dwarf.

2018-06-27  Dimitar Dimitrov  <dimitar@dinux.eu>

        * lra-eliminations.c (update_reg_eliminate): Mark all spanning hard
        registers for Pmode.
        * lra-lives.c (check_pseudos_live_through_calls): Mark all spanning
        hard registers for the clobbered pseudo.

2018-06-27  Paul Koning  <ni1d@arrl.net>

        * common/config/pdp11/pdp11-common.c (pdp11_handle_option): Handle
        mutually exclusive options.
        * config/pdp11/constraints.md (h): New constraint.
        (O): Update definition to match shift code generation.
        (D): New constraint.
        * config/pdp11/pdp11-modes.def (CCNZ): Define mode.
        (CCFP): Remove.
        * config/pdp11/pdp11-protos.h (int_no_side_effect_operand): New
        function.
        (output_jump): Change arguments.
        (pdp11_fixed_cc_regs): New function.
        (pdp11_cc_mode): Ditto.
        (pdp11_expand_shift): Ditto.
        (pdp11_assemble_shift): Ditto.
        (pdp11_small_shift): Ditto.
        (pdp11_branch_cost): Remove.
        * config/pdp11/pdp11.c (pdp11_assemble_integer): Remove comments
        from output.
        (pdp11_register_move_cost): Update for CC registers.
        (pdp11_rtx_costs): Add case for LSHIFTRT.
        (pdp11_output_jump): Add CCNZ mode conditional branches.
        (notice_update_cc_on_set): Remove.
        (pdp11_cc_mode): New function.
        (simple_memory_operand): Correct pre/post decrement case.
        (no_side_effect_operand): New function.
        (pdp11_regno_reg_class): Add CC_REGS class.
        (pdp11_fixed_cc_regs): New function.
        (pdp11_small_shift): New function.
        (pdp11_expand_shift): New function to expand shift insns.
        (pdp11_assemble_shift): New function to output shifts.
        (pdp11_branch_cost): Remove.
        (pdp11_modes_tieable_p): Make QI/HI modes tieable.
        * config/pdp11/pdp11.h (SIZE_TYPE): Ensure 16-bit type.
        (WCHAR_TYPE): Ditto.
        (PTRDIFF_TYPE): Ditto.
        (ADJUST_INSN_LENGTH): New macro.
        (FIXED_REGISTERS): Add CC registers.
        (CALL_USED_REGISTERS): Ditto.
        (reg_class): Ditto.
        (REG_CLASS_NAMES): Ditto.
        (REG_CLASS_CONTENTS): Ditto.
        (SELECT_CC_MODE): Use new function.
        (TARGET_FLAGS_REGNUM): New macro.
        (TARGET_FIXED_CONDITION_CODE_REGS): Ditto.
        (cc0_reg_rtx): Remove.
        (CC_STATUS_MDEP): Remove.
        (CC_STATUS_MDEFP_INIT): Remove.
        (CC_IN_FPU): Remove.
        (NOTICE_UPDATE_CC): Remove.
        (REGISTER_NAMES): Add CC registers.
        (BRANCH_COST): Change to constant 1.
        * config/pdp11/pdp11.md: Rewrite for CCmode condition code
        handling.
        * config/pdp11/pdp11.opt (mbcopy): Remove.
        (mbcopy-builtin): Remove.
        (mbranch-cheap): Remove.
        (mbranch-expensive): Remove.
        * config/pdp11/predicates.md (expand_shift_operand): Update to
        match shift code generation.
        (ccnz_operator): New predicate.
        * doc/invoke.texi (PDP-11 Options): Remove deleted options
        -mbcopy, -mbcopy-builtin, -mbranch-cheap, -mbranch-expensive.
        Remove non-existent option -mabshi, -mno-abshi.  Document mutually
        exclusive options.
        * doc/md.texi (PDP-11): Document new D and h constraints.  Update
        description of O constraint.

2018-06-27  Jeff Law  <law@redhat.com>
            Austin Law  <austinklaw@gmail.com>

        * config/v850/v850.md (addsi3_set_flags): New pattern.
        (subsi3_set_flags, negsi2_set_flags, andsi3_set_flags): Likewise.
        (iorsi3_set_flags, xorsi3_set_flags, one_cmplsi2_set_flags): Likewise.
        (zero_extendhisi2_v850_set_flags): Likewise.
        (zero_extendqisi2_v850_set_flags): Likewise.
        (ashlsi3_set_flags, ashlsi3_v850e2_set_flags): Likewise.
        (lshrsi3_set_flags, lshrsi3_v850e2_set_flags): Likewise.
        (ashrsi3_set_flags, ashrsi3_v850e2_set_flags): Likewise.

        * config/v850/v850-protos.h (notice_update_cc): Remove.
        * config/v850/v850.c (v850_compare_op0, v850_compare_op1): Remove.
        (v850_print_operand): Handle 'D' and "d".
        (v850_select_cc_mode): Remove ATTRIBUTE_UNUSED for last argument.
        Add handling of arithmetic/logical operations compared against zero.
        (v850_gen_float_compare): Remove ATTRIBUTE_UNUSED for last argument.
        Do not look at v850_compare_op, instead get mode from last argument.
        (v850_gen_compare): Remove
        (increment_stack): Use addsi3_clobber_flags to avoid splitting failure
        after reload for prologue insns.
        (expand_prologue): Account for CLOBBER of CC_REGNUM in various
        patterns.
        (construct_save_jarl): Likewise.
        (TARGET_FLAGS_REGNUM): Define.
        * config/v850/v850.h (v850_compare_op0, v850_compare_op1): Remove.
        (NOTICE_UPDATE_CC): Remove.
        * config/v850/v850.md (v850_tst1): Use (reg:CCZ CC_REGNUM) rather
        than cc0.  Conditionalize on reload_completed.
        (cmpsi_insn, setfcc_insn): Likewise.
        (tst1 splitter): Turn into define_and_split which sets the flags
        after reload.
        (cstoresi4, cbranchsf4, cbranchdf4, cbranchsi4_insn): Likewise.
        (cbranchsi4, branch_normal, branch_invert): Do not expose cc0 here.
        (cstoresf4, cstoredf4): Clobber the flags.
        (cmpsi, cmpsf, cmpdf): Remove expanders.
        (setf_insn): Remove pattern.
        (addsi3): Turn into define_and_split which clobbers the flags after
        reload and a suitable pattern (addsi3_clobber_flags) for use after
        reload.
        (subsi3, negsi2, andsi3, iorsi3, xorsi3, one_cmplsi2) Likewise.
        (ashlsi3, ashlsi3_v850e2, lshrsi3, lsh4si3_v850e2): Likewise.
        (ashrsi3, ashrsi3_v850e2): Likewise.
        (bins): Clobber the flags.
        (movsicc_normal_cc, movsicc_normal, movsicc_tst1): Likewise.
        (movsicc_tst1_revesed, sasf, swap and rotate patterns): Likewise.
        (fix_loop_counter, call_internal_short, call_internal_long): Likewise.
        (call_value_internal_short, call_value_internal_long): Likewise.
        (callt_save_interrupt, callt_return_interrupt): Likewise.
        (save_interrupt, return_interrupt): Likewise.
        (callt_save_all_interrupt, save_all_interrupt): Likewise.
        (_save_all_interrupt, callt_restore_all_interrupt): Likewise.
        (restore_all_interrupt, _restore_all_interrupt): Likewise.
        (All FP comparisons): Only allow after reload has completed.
        (trfsr): Likewise.
        (divh, divhu): Tweak output template.
        (branch_z_normal, branch_z_invert): Remove
        (branch_nz_normal, branch_nz_invert): Likewise.
        (extendhisi_insn, extendqisi_insn): Do not clobber flags.

        * config/v850/v850-modes.def (CCZ, CCNZ): Add new modes.
        * config/v850/v850.c (notice_update_cc): Remove.
        * config/v850/v850.h  (CC_OVERFLOW_UNUSABLE): Remove
        (CC_NO_CARRY): Likewise.
        (NOTICE_UPDATE_CC): Define to nothing.
        * config/v850/v850.md: Remove block comment on cc0 handling
        Remove "cc" attribute from all patterns.  Remove cc_status handling
        from all patterns.  Minor formatting fixes.

2018-06-27  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-cores.def (cortex-a76): New entry.
        (cortex-a76.cortex-a55): Likewise.
        * config/aarch64/aarch64-tune.md: Regenerate.
        * doc/invoke.texi (AArch64 Options): Document cortex-a76 and
        cortex-a76.cortex-a55.

2018-06-27  Jeff Law  <law@redhat.com>

        * config/v850/t-v850 (MULTILIB_OPTIONS): Remove 8byte-align.
        (MULTILIB_DIRNAMES): Similarly.

2018-06-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple.h (gimple_return_retbnd): Delete.
        (gimple_return_set_retbnd): Likewise.
        * cgraphunit.c (cgraph_node::expand_thunk): Remove call to
        gimple_return_set_retbnd.
        * gimple-pretty-print.c (dump_gimple_return): Remove call to
        gimple_return_retbnd and adjust.
        * tree-inline.h (struct copy_body_data): Remove retbnd field.
        * tree-inline.c (remap_gimple_stmt): Remove handling of retbnd.
        Explicitly return NULL in a couple more cases.  Move assertion
        on debug statements and remove unreachable code.
        (reset_debug_binding): Do not test id->retbnd.
        (expand_call_inline): Do not set it.

2018-06-27  Rasmus Villemoes  <rv@rasmusvillemoes.dk>

        * configure.ac: Add --disable-gcov option.
        * configure: Regenerate.
        * Makefile.in: Honour @enable_gcov@.
        * doc/install.texi: Document --disable-gcov.

2018-06-27  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (cortex-a76): New entry.
        (cortex-a76.cortex-a55): Likewise.
        * config/arm/arm-tables.opt: Regenerate.
        * config/arm/arm-tune.md: Likewise.
        * config/arm/driver-arm.c (arm_cpu_table): Add Cortex-A76 entry.
        * doc/invoke.texi (ARM Options): Document cortex-a76 and
        cortex-a76.cortex-a55.

2018-06-27  Tamar Christina  <tamar.christina@arm.com>

        PR target/85769
        * config/aarch64/aarch64.md (*movhf_aarch64): Add dup v0.4h pattern.

2018-06-27  Siddhesh Poyarekar  <siddhesh@sourceware.org>

        * config/aarch64/aarch64.h (CALL_USE_REGISTERS): Fix obsolete
        comment.
        (EPILOGUE_USES): Likewise.

2018-06-26  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-inline.c (remap_location): New function extracted from...
        (copy_edges_for_bb): Add ID parameter.  Remap goto_locus.
        (copy_phis_for_bb): ...here.  Call remap_location.
        (copy_cfg_body): Adjust call to copy_edges_for_bb.

2018-06-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (expand_block_clear): Don't use
        unaligned vsx for 16B memset.

2018-06-26  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86285
        * config/rs6000/rs6000.c (rs6000_init_builtins): Do not set
        ieee128_float_type_node to long_double_type_node unless
        TARGET_LONG_DOUBLE_128 is set.

2018-06-26  David Malcolm  <dmalcolm@redhat.com>

        * cfgloop.c (get_loop_location): Convert return type from
        location_t to dump_user_location_t, replacing INSN_LOCATION lookups
        by implicit construction from rtx_insn *, and using
        dump_user_location_t::from_function_decl for the fallback case.
        * cfgloop.h (get_loop_location): Convert return type from
        location_t to dump_user_location_t.
        * cgraphunit.c (walk_polymorphic_call_targets): Update call to
        dump_printf_loc to pass in a dump_location_t rather than a
        location_t, via the gimple stmt.
        * coverage.c (get_coverage_counts): Update calls to
        dump_printf_loc to pass in dump_location_t rather than a
        location_t.
        * doc/optinfo.texi (Dump types): Convert example of
        dump_printf_loc from taking "locus" to taking "insn".  Update
        description of the "_loc" calls to cover dump_location_t.
        * dumpfile.c: Include "backend.h", "gimple.h", "rtl.h", and
        "selftest.h".
        (dump_user_location_t::dump_user_location_t): New constructors,
        from gimple *stmt and rtx_insn *.
        (dump_user_location_t::from_function_decl): New function.
        (dump_loc): Make static.
        (dump_gimple_stmt_loc): Convert param "loc" from location_t to
        const dump_location_t &.
        (dump_generic_expr_loc): Delete.
        (dump_printf_loc): Convert param "loc" from location_t to
        const dump_location_t &.
        (selftest::test_impl_location): New function.
        (selftest::dumpfile_c_tests): New function.
        * dumpfile.h: Include "profile-count.h".
        (class dump_user_location_t): New class.
        (struct dump_impl_location_t): New struct.
        (class dump_location_t): New class.
        (dump_printf_loc): Convert 2nd param from source_location to
        const dump_location_t &.
        (dump_generic_expr_loc): Delete.
        (dump_gimple_stmt_loc): Convert 2nd param from source_location to
        const dump_location_t &.
        * gimple-fold.c (fold_gimple_assign): Update call to
        dump_printf_loc to pass in a dump_location_t rather than a
        location_t, via the gimple stmt.
        (gimple_fold_call): Likewise.
        * gimple-loop-interchange.cc
        (loop_cand::analyze_iloop_reduction_var): Update for change to
        check_reduction_path.
        (tree_loop_interchange::interchange): Update for change to
        find_loop_location.
        * graphite-isl-ast-to-gimple.c (scop_to_isl_ast): Update for
        change in return-type of find_loop_location.
        (graphite_regenerate_ast_isl): Likewise.
        * graphite-optimize-isl.c (optimize_isl): Likewise.
        * graphite.c (graphite_transform_loops): Likewise.
        * ipa-devirt.c (ipa_devirt): Update call to dump_printf_loc to
        pass in a dump_location_t rather than a location_t, via the
        gimple stmt.
        * ipa-prop.c (ipa_make_edge_direct_to_target): Likewise.
        * ipa.c (walk_polymorphic_call_targets): Likewise.
        * loop-unroll.c (report_unroll): Convert "locus" param from
        location_t to dump_location_t.
        (decide_unrolling): Update for change to get_loop_location's
        return type.
        * omp-grid.c (struct grid_prop): Convert field "target_loc" from
        location_t to dump_user_location_t.
        (grid_find_single_omp_among_assignments_1): Updates calls to
        dump_printf_loc to pass in a dump_location_t rather than a
        location_t, via the gimple stmt.
        (grid_parallel_clauses_gridifiable): Convert "tloc" from
        location_t to dump_location_t.  Updates calls to dump_printf_loc
        to pass in a dump_location_t rather than a location_t, via the
        gimple stmt.
        (grid_inner_loop_gridifiable_p): Likewise.
        (grid_dist_follows_simple_pattern): Likewise.
        (grid_gfor_follows_tiling_pattern): Likewise.
        (grid_target_follows_gridifiable_pattern): Likewise.
        (grid_attempt_target_gridification): Convert initialization
        of local "grid" from memset to zero-initialization; FIXME: does
        this require C++11?  Update call to dump_printf_loc to pass in a
        optinfo_location rather than a location_t, via the gimple stmt.
        * profile.c (read_profile_edge_counts): Updates call to
        dump_printf_loc to pass in a dump_location_t rather than a
        location_t
        (compute_branch_probabilities): Likewise.
        * selftest-run-tests.c (selftest::run_tests): Call
        dumpfile_c_tests.
        * selftest.h (dumpfile_c_tests): New decl.
        * tree-loop-distribution.c (pass_loop_distribution::execute):
        Update for change in return type of find_loop_location.
        * tree-parloops.c (parallelize_loops): Likewise.
        * tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Convert
        "locus" from location_t to dump_user_location_t.
        (canonicalize_loop_induction_variables): Likewise.
        * tree-ssa-loop-ivopts.c (tree_ssa_iv_optimize_loop): Update
        for change in return type of find_loop_location.
        * tree-ssa-loop-niter.c (number_of_iterations_exit): Update call
        to dump_printf_loc to pass in a dump_location_t rather than a
        location_t, via the stmt.
        * tree-ssa-sccvn.c (eliminate_dom_walker::before_dom_children):
        Likewise.
        * tree-vect-loop-manip.c (find_loop_location): Convert return
        type from source_location to dump_user_location_t.
        (vect_do_peeling): Update for above change.
        (vect_loop_versioning): Update for change in type of
        vect_location.
        * tree-vect-loop.c (check_reduction_path): Convert "loc" param
        from location_t to dump_user_location_t.
        (vect_estimate_min_profitable_iters): Update for change in type
        of vect_location.
        * tree-vect-slp.c (vect_print_slp_tree): Convert param "loc" from
        location_t to dump_location_t.
        (vect_slp_bb): Update for change in type of vect_location.
        * tree-vectorizer.c (vect_location): Convert from source_location
        to dump_user_location_t.
        (try_vectorize_loop_1): Update for change in vect_location's type.
        (vectorize_loops): Likewise.
        (increase_alignment): Likewise.
        * tree-vectorizer.h (vect_location): Convert from source_location
        to dump_user_location_t.
        (find_loop_location): Convert return type from source_location to
        dump_user_location_t.
        (check_reduction_path): Convert 1st param from location_t to
        dump_user_location_t.
        * value-prof.c (check_counter): Update call to dump_printf_loc to
        pass in a dump_user_location_t rather than a location_t; update
        call to error_at for change in type of "locus".
        (check_ic_target): Update call to dump_printf_loc to
        pass in a dump_user_location_t rather than a location_t, via the
        call_stmt.

2018-06-26  Robin Dapp  <rdapp@linux.vnet.ibm.com>

        * config/s390/s390.h (enum processor_flags): Do not use
        default tune parameter when -march was specified.

2018-06-26  Jakub Jelinek  <jakub@redhat.com>

        PR target/86314
        * config/i386/i386.md (setcc + movzbl to xor + setcc peephole2s):
        Check reg_overlap_mentioned_p in addition to reg_set_p with the same
        operands.

2018-06-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86287
        PR bootstrap/86316
        * tree-vect-loop.c (vect_transform_loop_stmt): Fix read-after-free.
        (vect_analyze_loop): Initialize n_stmts.

2018-06-26  Richard Biener  <rguenther@suse.de>

        PR middle-end/86271
        * fold-const.c (fold_convertible_p): Pointer extension
        isn't valid.

2018-06-26  Alexandre Oliva <aoliva@redhat.com>

        PR debug/86064
        * dwarf2out.c (loc_list_has_views): Adjust comments.
        (dw_loc_list): Split single cross-partition range with
        nonzero locview.

2018-06-25  Jeff Law  <law@redhat.com>

        * common/config/v850/v850-common.c (TARGET_DEFAULT_TARGET_FLAGS): Turn
        on -mbig-switch by default.

        * config/v850/predicates.md (const_float_1_operand): Fix match_code
        test.
        (const_float_0_operand): Remove unused predicate.
        * config/v850/v850.md (define_constants): Remove UNSPEC_LOOP.
        (define_c_enum unspec): Add LOOP, RCP and RSQRT constants.
        (recipsf2): New expander.  Original pattern now called
        (recipsf2_insn).
        (recipdf2, recipdf2_insn): Similarly.
        (rsqrtsf2, rsqrtsf2_insn): Similarly
        (rsqrtdf2, rsqrtdf2_insn): Similarly

2018-06-26  Gerald Pfeifer  <gerald@pfeifer.com>

        * ginclude/stddef.h: Remove an obsolete comment on FreeBSD 5.
        Simplify logic for FreeBSD (twice).

2018-06-25  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86204
        * tree-ssa-strlen.c (handle_builtin_strlen): Avoid storing
        a strnlen result if it's less than the length of the string.

2018-06-25  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/85700
        * gimple-fold.c (gimple_fold_builtin_strncat): Adjust comment.
        * tree-ssa-strlen.c (is_strlen_related_p): Handle integer subtraction.
        (maybe_diag_stxncpy_trunc): Distinguish strncat from strncpy.

2018-06-25  Martin Sebor  <msebor@redhat.com>

        * doc/extend.texi (Zero-length arrays): Update and clarify.

2018-06-25  Michael Meissner  <meissner@linux.ibm.com>

        * config.gcc (powerpc64le*): Revert January 16th, 2018 patch that
        added IEEE/IBM long double multilib support on PowerPC little
        endian Linux systems.
        * config/rs6000/linux64.h (MULTILIB_DEFAULTS_IEEE): Likewise.
        (MULTILIB_DEFAULTS): Likewise.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Likewise.
        * config/rs6000/rs6000.h (TARGET_IEEEQUAD_MULTILIB): Likewise.
        * config/rs6000/t-ldouble-linux64le-ibm: Delete, no longer used.
        * config/rs6000/t-ldouble-linux64le-ieee: Delete, no longer used.

2018-06-25  Alexander Monakov  <amonakov@ispras.ru>

        PR middle-end/86311
        * sort.cc (REORDER_23): Avoid memcpy with same destination and source.
        (REORDER_45): Likewise.

2018-06-25  Jeff Law  <law@redhat.com>

        * config/v850/v850.md (divmodhi4): Make sure to sign extend the
        dividend to 32 bits.  Adjust length.
        (udivmodhi4): Cleanup output template.  Fix length.

2018-06-25  Carl Love  <cel@us.ibm.com>

        * config/rs6000/vsx.md: Change word selector to prefered location.

2018-06-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86304
        * tree-vectorizer.c (vectorize_loops): Walk over new possibly
        epilogue-if-converted loops as well.

2018-06-25  Jan Hubicka  <hubicka@ucw.cz>

        * lto-section-out.c (lto_begin_section): Do not print section
        name for noaddr and unnumbered dumps.

2018-06-25  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (struct vec_info_shared): New structure
        with parts split out from struct vec_info and loop_nest from
        struct _loop_vec_info.
        (struct vec_info): Adjust accordingly.
        (struct _loop_vec_info): Likewise.
        (LOOP_VINFO_LOOP_NEST): Adjust.
        (LOOP_VINFO_DATAREFS): Likewise.
        (LOOP_VINFO_DDRS): Likewise.
        (struct _bb_vec_info): Likewise.
        (BB_VINFO_DATAREFS): Likewise.
        (BB_VINFO_DDRS): Likewise.
        (struct _stmt_vec_info): Add dr_aux member.
        (DR_VECT_AUX): Adjust to refer to member of DR_STMTs vinfo.
        (DR_MISALIGNMENT_UNINITIALIZED): New.
        (set_dr_misalignment): Adjust.
        (dr_misalignment): Assert misalign isn't DR_MISALIGNMENT_UNINITIALIZED.
        (vect_analyze_loop): Adjust prototype.
        (vect_analyze_loop_form): Likewise.
        * tree-vect-data-refs.c (vect_analyze_data_ref_dependences):
        Compute dependences lazily.
        (vect_record_base_alignments): Use shared datarefs/ddrs.
        (vect_verify_datarefs_alignment): Likewise.
        (vect_analyze_data_refs_alignment): Likewise.
        (vect_analyze_data_ref_accesses): Likewise.
        (vect_analyze_data_refs): Likewise.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Add
        constructor parameter for shared part.
        (vect_analyze_loop_form): Pass in shared part and adjust.
        (vect_analyze_loop_2): Pass in storage for the number of
        stmts.  Move loop nest finding to the caller.  Compute
        datarefs lazily.
        (vect_analyze_loop): Pass in shared part.
        (vect_transform_loop): Verify shared datarefs are unchanged.
        * tree-vect-slp.c (_bb_vec_info::_bb_vec_info): Add
        constructor parameter for shared part.
        (vect_slp_analyze_bb_1): Pass in shared part and adjust.
        (vect_slp_bb): Verify shared datarefs are unchanged before
        transform.
        * tree-vect-stmts.c (ensure_base_align): Adjust for DR_AUX
        change.
        (new_stmt_vec_info): Initialize DR_AUX misalignment to
        DR_MISALIGNMENT_UNINITIALIZED.
        * tree-vectorizer.c (vec_info::vec_info): Add constructor
        parameter for shared part.
        (vec_info::~vec_info): Adjust.
        (vec_info_shared::vec_info_shared): New.
        (vec_info_shared::~vec_info_shared): Likewise.
        (vec_info_shared::save_datarefs): Likewise.
        (vec_info_shared::check_datarefs): Likewise.
        (try_vectorize_loop_1): Construct shared part live for analyses
        of a single loop for multiple vector sizes.
        * tree-parloops.c (gather_scalar_reductions): Adjust.

2018-06-25  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_find_stmt_data_reference): Modify
        DR for SIMD lane accesses here and mark DR with (void *)-1 aux.
        (vect_analyze_data_refs): Remove similar code from here and
        simplify accordingly.

2018-06-25  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_check_gather_scatter): Fail
        for reverse storage order accesses rather than asserting
        they cannot happen here.

2018-06-25  Tom de Vries  <tdevries@suse.de>

        PR debug/86257
        * config/i386/i386.md (define_insn "*tls_global_dynamic_64_<mode>"):
        Use data16 instead of .byte for insn prefix.

2018-06-25  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR C++/86082
        * parser.c (make_char_string_pack): Pass this literal chars
        through cpp_interpret_string.
        (cp_parser_userdef_numeric_literal): Check the result of
        make_char_string_pack.

2018-06-24  Maya Rashish  <coypu@sdf.org>

        * ginclude/stddef.h: Simplify conditions around avoiding
        re-definition of __size_t.

2018-06-22  Jan Hubicka  <hubicka@ucw.cz>

        * lto-streamer-out.c (tree_is_indexable): Make LABEL_DECL nonindexable
        unless it is forced or nonlocal; assert that we stream no IMPORTED_DECL.

2018-06-22  Maya Rashish  <coypu@sdf.org>

        * doc/invoke.texi (mno-fancy-math-387): Update for changes
        made to OpenBSD and NetBSD through the years.

2018-06-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Change
        behavior of vec_pack (vector double, vector double) to match
        behavior of vec_float2 (vector double, vector double).

2018-06-22  Olivier Hainque  <hainque@adacore.com>

        * gimplify.c (gimplify_function_tree): Prevent creation
        of a trampoline for the address of the current function
        passed to entry/exit instrumentation hooks.

2018-06-22  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/86222
        * config/rs6000/rs6000-string.c (expand_strn_compare): Handle -m32
        correctly.

2018-06-22  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86263
        * tree-switch-conversion.c (jump_table_cluster::find_jump_tables):
        Bail out if is_enabled is false.
        * tree-switch-conversion.h (jump_table_cluster::is_enabled):
        New declaration.
        (jump_table_cluster::is_enabled): New function.

2018-06-22  Jan Hubicka  <hubicka@ucw.cz>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Do not stream
        BINFO_BASE_ACCESSES and BINFO_VPTR_FIELD.
        * tree-streamer-in.c (streamer_read_tree_bitfields): Likewise.
        (lto_input_ts_binfo_tree_pointers): Likewise.
        * tree-streamer-out.c (streamer_write_tree_bitfields,
        write_ts_binfo_tree_pointers): Likewise.
        * tree.c (free_lang_data_in_binfo): Clear BINFO_VPTR_FIELD.

2018-06-22  Jan Hubicka  <hubicka@ucw.cz>

        * tree.c (free_lang_data_in_type): Free all TYPE_VFIELDs.

2018-06-22  Martin Liska  <mliska@suse.cz>

        * symbol-summary.h (get): Make it pure and inline move
        functionality from ::get function.
        (get): Remove and inline into ::get and ::get_create.
        (get_create): Move code from ::get function.

2018-06-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR target/85994
        * config/i386/sol2.h (CPP_SPEC): Don't pass -P for
        -x assembler-with-cpp.

2018-06-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * config/sol2.h (TARGET_OS_CPP_BUILTINS): Define
        _FILE_OFFSET_BITS=64 for C++.

2018-06-21  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.md (extendtfif2): Add missing 128-bit
        conversion insn that shows up when pr85657-3.c is compiled using
        IEEE 128-bit long double.
        (neg<mode>2_internal): Use the correct mode to check whether the
        mode is IBM extended.
        * config/rs6000/rs6000.c (init_float128_ieee): Prevent complex
        multiply and divide external functions from being created more
        than once.

2018-06-21  Eric Botcazou  <ebotcazou@adacore.com>

        * cfgrtl.c (fixup_reorder_chain): Do not emit NOPs in DECL_IGNORED_P
        functions.
        (rtl_merge_blocks): Likewise.  Do not emit a NOP if the location of
        the edge can be forwarded.
        (cfg_layout_merge_blocks): Likewise.

2018-06-21  Eric Botcazou  <ebotcazou@adacore.com>

        * except.c (finish_eh_generation): Commit edge insertions only after
        the EH edges have been redirected from post-landing to landing pads.

2018-06-21  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-nested.c (get_frame_type): Use create_tmp_var_raw instead of
        create_tmp_var_for to create the FRAME decl.
        (finalize_nesting_tree_1): Do not unchain the FRAME decl.

2018-06-21  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-inline.c (copy_edges_for_bb): Minor tweak.
        (maybe_move_debug_stmts_to_successors): Also reset the locus of the
        debug statement when resetting its value.
        (expand_call_inline): Copy the locus of the call onto the assignment
        of the return value, if any.  Use local variable in more cases.

2018-06-21  Martin Liska  <mliska@suse.cz>

        * ipa-pure-const.c (propagate_nothrow): Use
        funct_state_summaries->get.
        (dump_malloc_lattice): Likewise.
        (propagate_malloc): Likewise.

2018-06-21  Richard Biener  <rguenther@suse.de>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Update outdated
        comment.  Follow BLOCK_ABSTRACT_ORIGIN unconditionally.
        * tree-streamer-in.c (lto_input_ts_block_tree_pointers): Update
        comment.
        * tree-streamer-out.c (write_ts_block_tree_pointers): Stream
        BLOCK_ABSTRACT_ORIGIN unconditionally.

2018-06-21  David Malcolm  <dmalcolm@redhat.com>

        * ipa-cp.c (ipcp_driver): Set edge_clone_summaries to NULL after
        deleting it.
        * ipa-reference.c (ipa_reference_c_finalize): Delete
        ipa_ref_opt_sum_summaries and set it to NULL.

2018-06-21  Tom de Vries  <tdevries@suse.de>

        PR tree-optimization/85859
        * tree-ssa-tail-merge.c (stmt_local_def): Copy gimple_is_call
        test with comment from bb_no_side_effects_p.

2018-06-21  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86232
        * tree-ssa-loop-niter.c (number_of_iterations_popcount): Adjust
        max for constant niter.

2018-06-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/aarch64-simd.md
        (*aarch64_crypto_aes<aes_op>v16qi_xor_combine): New.

2018-06-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_crypto_aes<aes_op>v16qi):
        Make opernads of the unspec commutative.

2018-06-21  Richard Biener  <rguenther@suse.de>

        * tree-data-ref.c (dr_step_indicator): Handle NULL DR_STEP.
        * tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr):
        Avoid calling vect_mark_for_runtime_alias_test with gathers or scatters.
        (vect_analyze_data_ref_dependence): Re-order checks to deal with
        NULL DR_STEP.
        (vect_record_base_alignments): Do not record base alignment
        for gathers or scatters.
        (vect_compute_data_ref_alignment): Drop return value that is always
        true.  Bail out early for gathers or scatters.
        (vect_enhance_data_refs_alignment): Bail out early for gathers
        or scatters.
        (vect_find_same_alignment_drs): Likewise.
        (vect_analyze_data_refs_alignment): Remove dead code.
        (vect_slp_analyze_and_verify_node_alignment): Likewise.
        (vect_analyze_data_refs): For possible gathers or scatters do
        not create an alternate DR, just check their possible validity
        and mark them.  Adjust DECL_NONALIASED handling to not rely
        on DR_BASE_ADDRESS.
        * tree-vect-loop-manip.c (vect_update_inits_of_drs): Do not
        update inits of gathers or scatters.
        * tree-vect-patterns.c (vect_recog_mask_conversion_pattern):
        Also copy gather/scatter flag to pattern vinfo.

2018-06-20  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Change
        behavior of vec_packsu (vector unsigned long long, vector unsigned
        long long) to match behavior of vec_packs with same signature.

2018-06-20  Chung-Lin Tang <cltang@codesourcery.com>
            Thomas Schwinge <thomas@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        * gimplify.c (gimplify_scan_omp_clauses): Add support for
        OMP_CLAUSE_{IF_PRESENT,FINALIZE}.
        (gimplify_adjust_omp_clauses): Likewise.
        (gimplify_oacc_declare_1): Add support for GOMP_MAP_RELEASE, remove
        support for GOMP_MAP_FORCE_{ALLOC,TO,FROM,TOFROM}.
        (gimplify_omp_target_update): Update handling of acc update and
        enter/exit data.
        * omp-low.c (install_var_field): Remove unused parameter
        base_pointers_restrict.
        (scan_sharing_clauses): Remove base_pointers_restrict parameter.
        Update call to install_var_field. Handle OMP_CLAUSE_{IF_PRESENT,
        FINALIZE}
        (omp_target_base_pointers_restrict_p): Delete.
        (scan_omp_target): Update call to scan_sharing_clauses.
        * tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_{IF_PRESENT,
        FINALIZE}.
        * tree-nested.c (convert_nonlocal_omp_clauses): Handle
        OMP_CLAUSE_{IF_PRESENT,FINALIZE}.
        (convert_local_omp_clauses): Likewise.
        * tree-pretty-print.c (dump_omp_clause): Likewise.
        * tree.c (omp_clause_num_ops): Add entries for  OMP_CLAUSE_{IF_PRESENT,
        FINALIZE}.
        (omp_clause_code_name): Likewise.

2018-06-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/86194
        * var-tracking.c (use_narrower_mode_test): Check if shift amount can
        be narrowed.

        PR tree-optimization/86231
        * tree-vrp.c (union_ranges): For (  [  )  ] or (   )[   ] range and
        anti-range don't overwrite *vr0min before using it to compute *vr0max.

2018-06-20  Tom de Vries  <tdevries@suse.de>

        PR tree-optimization/86097
        * tree-ssa-loop-manip.c (canonicalize_loop_ivs): Also convert *nit to
        iv type if signedness of iv type is not the same as that of *nit.

2018-06-20  Jakub Jelinek  <jakub@redhat.com>

        * cfgrtl.c (rtl_verify_edges): Formatting fix.  If bb->preds has any
        EDGE_EH edges, verify they are all EDGE_EH.

2018-06-20  Maya Rashish  <coypu@sdf.org>

        * ginclude/stddef.h: Limit #include <machine/ansi.h> to NetBSD.

2018-06-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-tuning-flags.def (no_ldp_stp_qregs): New.
        * config/aarch64/aarch64.c (xgene1_tunings): Add
        AARCH64_EXTRA_TUNE_NO_LDP_STP_QREGS to tune_flags.
        (aarch64_mode_valid_for_sched_fusion_p):
        Allow 16-byte modes.
        (aarch64_classify_address): Allow 16-byte modes for load_store_pair_p.
        * config/aarch64/aarch64-ldpstp.md: Add peepholes for LDP STP of
        128-bit modes.
        * config/aarch64/aarch64-simd.md (load_pair<VQ:mode><VQ2:mode>):
        New pattern.
        (vec_store_pair<VQ:mode><VQ2:mode>): Likewise.
        * config/aarch64/iterators.md (VQ2): New mode iterator.

2018-06-20  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (jump_table_cluster::can_be_handled):
        Change default ratio from 10 to 8.

2018-06-20  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (jump_table_cluster::find_jump_tables):
        New.
        (bit_test_cluster::find_bit_tests): Likewise.
        (switch_decision_tree::analyze_switch_statement): Find clusters.
        * tree-switch-conversion.h (struct jump_table_cluster): Document
        hierarchy.

2018-06-20  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (switch_conversion::collect):
        Record m_uniq property.
        (switch_conversion::expand): Bail out for special conditions.
        (group_cluster::~group_cluster): New.
        (group_cluster::group_cluster): Likewise.
        (group_cluster::dump): Likewise.
        (jump_table_cluster::emit): New.
        (switch_decision_tree::fix_phi_operands_for_edges): New.
        (struct case_node): Remove struct.
        (jump_table_cluster::can_be_handled): New.
        (case_values_threshold): Moved to header.
        (reset_out_edges_aux): Likewise.
        (jump_table_cluster::is_beneficial): New.
        (bit_test_cluster::can_be_handled): Likewise.
        (add_case_node): Remove.
        (bit_test_cluster::is_beneficial): New.
        (case_bit_test::cmp): New.
        (bit_test_cluster::emit): New.
        (expand_switch_as_decision_tree_p): Remove.
        (bit_test_cluster::hoist_edge_and_branch_if_true): New.
        (fix_phi_operands_for_edge): Likewise.
        (switch_decision_tree::analyze_switch_statement): New.
        (compute_cases_per_edge): Move ...
        (switch_decision_tree::compute_cases_per_edge): ... here.
        (try_switch_expansion): Likewise.
        (switch_decision_tree::try_switch_expansion): Likewise.
        (record_phi_operand_mapping): Likewise.
        (switch_decision_tree::record_phi_operand_mapping): Likewise.
        (emit_case_decision_tree): Likewise.
        (switch_decision_tree::emit): Likewise.
        (balance_case_nodes): Likewise.
        (switch_decision_tree::balance_case_nodes): Likewise.
        (dump_case_nodes): Likewise.
        (switch_decision_tree::dump_case_nodes): Likewise.
        (emit_jump): Likewise.
        (switch_decision_tree::emit_jump): Likewise.
        (emit_cmp_and_jump_insns): Likewise.
        (switch_decision_tree::emit_cmp_and_jump_insns): Likewise.
        (emit_case_nodes): Likewise.
        (switch_decision_tree::emit_case_nodes): Likewise.
        (conditional_probability): Remove.
        * tree-switch-conversion.h (enum cluster_type): New.
        (PRINT_CASE): New.
        (struct cluster): Likewise.
        (cluster::cluster): Likewise.
        (struct simple_cluster): Likewise.
        (simple_cluster::simple_cluster): Likewise.
        (struct group_cluster): Likewise.
        (struct jump_table_cluster): Likewise.
        (struct bit_test_cluster): Likewise.
        (struct min_cluster_item): Likewise.
        (struct case_tree_node): Likewise.
        (case_tree_node::case_tree_node): Likewise.
        (jump_table_cluster::case_values_threshold): Likewise.
        (struct case_bit_test): Likewise.
        (struct switch_decision_tree): Likewise.
        (struct switch_conversion): Likewise.
        (switch_decision_tree::reset_out_edges_aux): Likewise.

2018-06-20  Martin Liska  <mliska@suse.cz>

        * tree-switch-conversion.c (MAX_CASE_BIT_TESTS): Remove.
        (hoist_edge_and_branch_if_true): Likewise.
        (expand_switch_using_bit_tests_p): Likewise.
        (struct case_bit_test): Likewise.
        (case_bit_test_cmp): Likewise.
        (emit_case_bit_tests): Likewise.
        (switch_conversion::switch_conversion): New class.
        (struct switch_conv_info): Remove old struct.
        (collect_switch_conv_info): More to ...
        (switch_conversion::collect): ... this.
        (check_range): Likewise.
        (switch_conversion::check_range): Likewise.
        (check_all_empty_except_final): Likewise.
        (switch_conversion::check_all_empty_except_final): Likewise.
        (check_final_bb): Likewise.
        (switch_conversion::check_final_bb): Likewise.
        (create_temp_arrays): Likewise.
        (switch_conversion::create_temp_arrays): Likewise.
        (free_temp_arrays): Likewise.
        (gather_default_values): Likewise.
        (switch_conversion::gather_default_values): Likewise.
        (build_constructors): Likewise.
        (switch_conversion::build_constructors): Likewise.
        (constructor_contains_same_values_p): Likewise.
        (switch_conversion::contains_same_values_p): Likewise.
        (array_value_type): Likewise.
        (switch_conversion::array_value_type): Likewise.
        (build_one_array): Likewise.
        (switch_conversion::build_one_array): Likewise.
        (build_arrays): Likewise.
        (switch_conversion::build_arrays): Likewise.
        (gen_def_assigns): Likewise.
        (switch_conversion::gen_def_assigns): Likewise.
        (prune_bbs): Likewise.
        (switch_conversion::prune_bbs): Likewise.
        (fix_phi_nodes): Likewise.
        (switch_conversion::fix_phi_nodes): Likewise.
        (gen_inbound_check): Likewise.
        (switch_conversion::gen_inbound_check): Likewise.
        (process_switch): Use the newly created class.
        (switch_conversion::expand): New.
        (switch_conversion::~switch_conversion): New.
        * tree-switch-conversion.h: New file.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (NUM_PATTERNS, vect_recog_func_ptr): Move to
        tree-vect-patterns.c.
        * tree-vect-patterns.c (vect_supportable_direct_optab_p): New function.
        (vect_recog_dot_prod_pattern): Use it.  Remove the type_in argument.
        (vect_recog_sad_pattern): Likewise.
        (vect_recog_widen_sum_pattern): Likewise.
        (vect_recog_pow_pattern): Likewise.  Check for a null vectype.
        (vect_recog_widen_shift_pattern): Remove the type_in argument.
        (vect_recog_rotate_pattern): Likewise.
        (vect_recog_mult_pattern): Likewise.
        (vect_recog_vector_vector_shift_pattern): Likewise.
        (vect_recog_divmod_pattern): Likewise.
        (vect_recog_mixed_size_cond_pattern): Likewise.
        (vect_recog_bool_pattern): Likewise.
        (vect_recog_mask_conversion_pattern): Likewise.
        (vect_try_gather_scatter_pattern): Likewise.
        (vect_recog_widen_mult_pattern): Likewise.  Check for a null vectype.
        (vect_recog_over_widening_pattern): Likewise.
        (vect_recog_gather_scatter_pattern): Likewise.
        (vect_recog_func_ptr): Move from tree-vectorizer.h
        (vect_vect_recog_func_ptrs): Move further down the file.
        (vect_recog_func): Likewise.  Remove the third argument.
        (NUM_PATTERNS): Define based on vect_vect_recog_func_ptrs.
        (vect_pattern_recog_1): Expect the pattern function to do any
        necessary target tests.  Also expect it to provide a vector type.
        Remove the type_in handling.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_pattern_detected): New function.
        (vect_recog_dot_prod_patternm, vect_recog_sad_pattern)
        (vect_recog_widen_mult_pattern, vect_recog_widen_sum_pattern)
        (vect_recog_over_widening_pattern, vect_recog_widen_shift_pattern
        (vect_recog_rotate_pattern, vect_recog_vector_vector_shift_pattern)
        (vect_recog_mult_pattern, vect_recog_divmod_pattern)
        (vect_recog_mixed_size_cond_pattern, vect_recog_bool_pattern)
        (vect_recog_mask_conversion_pattern)
        (vect_try_gather_scatter_pattern): Likewise.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_get_internal_def): New function.
        (vect_recog_dot_prod_pattern, vect_recog_sad_pattern)
        (vect_recog_vector_vector_shift_pattern, check_bool_pattern)
        (search_type_for_mask_1): Use it.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_recog_dot_prod_pattern): Remove
        redundant WIDEN_SUM_EXPR handling.
        (vect_recog_sad_pattern): Likewise.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-patterns.c (vect_recog_dot_prod_pattern): Remove
        redundant check that the types of a PLUS_EXPR or MULT_EXPR agree.
        (vect_recog_sad_pattern): Likewise PLUS_EXPR, ABS_EXPR and MINUS_EXPR.
        (vect_recog_widen_mult_pattern): Likewise MULT_EXPR.
        (vect_recog_widen_sum_pattern): Likewise PLUS_EXPR.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-stmts.c (vectorizable_call): Make sure that we
        use the stmt_vec_info of the original bb statement for the
        new zero assignment, even if the call is part of a pattern.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vectorizer.h (_stmt_vec_info): Note above pattern_def_seq
        that the sequence is attached to the original statement rather
        than the pattern statement.
        * tree-vect-loop.c (vect_determine_vf_for_stmt): Take the
        PATTERN_DEF_SEQ from the original statement rather than
        the main pattern statement.
        * tree-vect-stmts.c (free_stmt_vec_info): Likewise.
        * tree-vect-patterns.c (vect_recog_dot_prod_pattern): Likewise.
        (vect_mark_pattern_stmts): Don't copy the PATTERN_DEF_SEQ.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-stmts.c (vect_analyze_stmt): Move the handling of pattern
        definition statements before the early exit for statements that aren't
        live or relevant.
        * tree-vect-loop.c (vect_transform_loop_stmt): New function,
        split out from...
        (vect_transform_loop): ...here.  Process pattern definition
        statements without first checking whether the main pattern
        statement is live or relevant.

2018-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-cfgcleanup.c (tree_forwarder_block_p): Do not return false at
        -O0 if the locus represent UNKNOWN_LOCATION but have different values.

2018-06-19  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (select_block_compare_mode): Check
        TARGET_EFFICIENT_OVERLAPPING_UNALIGNED here instead of in caller.
        (do_and3, do_and3_mask, do_compb3, do_rotl3): New functions.
        (expand_block_compare): Change select_block_compare_mode call.
        (expand_strncmp_align_check): Use new functions, fix comment.
        (emit_final_str_compare_gpr): New function.
        (expand_strn_compare): Refactor and clean up code.
        * config/rs6000/vsx.md (vsx_mov<mode>_64bit): Remove *.

2018-06-19  Tony Reix  <tony.reix@atos.com>
            Damien Bergamini  <damien.bergamini@atos.com>
            David Edelsohn  <dje.gcc@gmail.com>

        * collect2.c (static_obj): New variable.
        (static_libs): New variable.
        (is_in_list): Uncomment declaration.
        (main): Track AIX libraries linked statically.
        (is_in_list): Uncomment definition.
        (scan_prog_file): Don't add AIX shared libraries initializer
        to constructor list if linking statically.

2018-06-19  Max Filippov  <jcmvbkbc@gmail.com>

        * config/xtensa/xtensa.md (UNSPEC_FRAME_BLOCKAGE): New unspec
        constant.
        (allocate_stack, frame_blockage, *frame_blockage): New patterns.

2018-06-19  Jan Hubicka  <hubicka@ucw.cz>

        * tree.c (find_decls_types_r): Remove all non-VAR_DECLs from
        blocks.

2018-06-19  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.c (ix86_can_inline_p): Do not use
        ipa_fn_summaries::get_create.
        * ipa-cp.c (ipcp_cloning_candidate_p): Replace get_create with
        get.
        (devirtualization_time_bonus): Likewise.
        (ipcp_propagate_stage): Likewise.
        * ipa-fnsummary.c (redirect_to_unreachable): Likewise.
        (edge_set_predicate): Likewise.
        (evaluate_conditions_for_known_args): Likewise.
        (evaluate_properties_for_edge): Likewise.
        (ipa_call_summary::reset): Tranform to ...
        (ipa_call_summary::~ipa_call_summary): ... this.
        (ipa_fn_summary::reset): Transform to ...
        (ipa_fn_summary::~ipa_fn_summary): ... this.
        (ipa_fn_summary_t::remove): Rename to ...
        (ipa_fn_summary_t::remove_callees): ... this.
        (ipa_fn_summary_t::duplicate): Use placement new
        instead of memory copy.
        (ipa_call_summary_t::duplicate): Likewise.
        (ipa_call_summary_t::remove): Remove.
        (dump_ipa_call_summary): Change get_create to get.
        (ipa_dump_fn_summary): Dump only when summary exists.
        (analyze_function_body): Use symbol_summary::get instead
        of get_create.
        (compute_fn_summary): Likewise.
        (estimate_edge_devirt_benefit): Likewise.
        (estimate_edge_size_and_time): Likewise.
        (inline_update_callee_summaries): Likewise.
        (remap_edge_change_prob): Likewise.
        (remap_edge_summaries): Likewise.
        (ipa_merge_fn_summary_after_inlining): Likewise.
        (write_ipa_call_summary): Likewise.
        (ipa_fn_summary_write): Likewise.
        (ipa_free_fn_summary): Likewise.
        * ipa-fnsummary.h (struct GTY): Add new ctor and copy ctor.
        (struct ipa_call_summary): Likewise.
        * ipa-icf.c (sem_function::merge): Use symbol_summary::get instead
        of get_create.
        * ipa-inline-analysis.c (do_estimate_edge_time): Likewise.
        (estimate_size_after_inlining): Likewise.
        (estimate_growth): Likewise.
        (growth_likely_positive): Likewise.
        * ipa-inline-transform.c (clone_inlined_nodes): Likewise.
        (inline_call): Likewise.
        * ipa-inline.c (caller_growth_limits): Likewise.
        (can_inline_edge_p): Likewise.
        (can_inline_edge_by_limits_p): Likewise.
        (compute_uninlined_call_time): Likewise.
        (compute_inlined_call_time): Likewise.
        (want_inline_small_function_p): Likewise.
        (edge_badness): Likewise.
        (update_caller_keys): Likewise.
        (update_callee_keys): Likewise.
        (inline_small_functions): Likewise.
        (inline_to_all_callers_1): Likewise.
        (dump_overall_stats): Likewise.
        (early_inline_small_functions): Likewise.
        (early_inliner): Likewise.
        * ipa-profile.c (ipa_propagate_frequency_1): Likewise.
        * ipa-prop.c (ipa_make_edge_direct_to_target): Likewise.
        * ipa-pure-const.c (malloc_candidate_p): Likewise.
        * ipa-split.c (execute_split_functions): Likewise.
        * symbol-summary.h: Likewise.
        * tree-sra.c (ipa_sra_preliminary_function_checks): Likewise.

2018-06-19  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.c (try_vectorize_loop_1): Split out of ...
        (vectorize_loops): ... here.  Fix dbgcnt handling.
        (try_vectorize_loop): Wrap try_vectorize_loop_1.

2018-06-19  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86197
        * config/rs6000/rs6000.md (rs6000_discover_homogeneous_aggregate): An
        ieee128 argument takes up only one (vector) register, not two (floating
        point) registers.

2018-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (gimplify_init_constructor): Really never clear for an
        incomplete constructor if CONSTRUCTOR_NO_CLEARING is set.

2018-06-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86179
        * tree-vect-patterns.c (vect_pattern_recog_1): Clean up
        after failed recognition.

2018-06-18  Martin Sebor  <msebor@redhat.com>

        PR middle-end/85602
        * calls.c (maybe_warn_nonstring_arg): Handle strncat.
        * tree-ssa-strlen.c (is_strlen_related_p): Make extern.
        Handle integer subtraction.
        (maybe_diag_stxncpy_trunc): Handle nonstring source arguments.
        * tree-ssa-strlen.h (is_strlen_related_p): Declare.

2018-06-18  David Malcolm  <dmalcolm@redhat.com>

        * config/frv/frv-protos.h (frv_ifcvt_modify_insn): Strengthen 3rd
        param from rtx to rtx_insn *.
        * config/frv/frv.c (frv_ifcvt_add_insn): Likewise for "insn"
        param.
        (frv_ifcvt_modify_insn): Likwise.
        (frv_ifcvt_modify_final): Likwise for local "existing_insn",
        adding an as_a <rtx_insn *> cast.  Likewise for local "insn".
        * config/mips/mips.c (r10k_insert_cache_barriers): Add an
        as_a <rtx_insn *> cast to local "unprotected_region" once
        it's been established that it's not NULL or pc_rtx.
        * config/nds32/nds32-relax-opt.c (nds32_group_insns): Strengthen
        param "sethi" from rtx to rtx_insn *.
        (nds32_group_float_insns): Likewise for param "insn".
        * config/vax/vax-protos.h (vax_output_int_add): Likewise for 1st
        param.
        (vax_output_int_subtract): Likewise.
        * config/vax/vax.c (vax_output_int_add): Likewise for param
        "insn".
        (vax_output_int_subtract): Likewise.
        * emit-rtl.c (set_insn_deleted): Likewise, removing cast.
        (emit_pattern_after): Likewise for param "after".
        (emit_insn_after): Likewise.
        (emit_jump_insn_after): Likewise.
        (emit_call_insn_after): Likewise.
        (emit_debug_insn_after): Likewise.
        (emit_pattern_before): Likewise for param "before".
        (emit_insn_before): Likewise.
        (emit_jump_insn_before): Likewise.
        * final.c (get_insn_template): Likewise for param "insn", removing
        a cast.
        * output.h (get_insn_template): Likewise for 2nd param.
        * rtl.h (emit_insn_before): Likewise.
        (emit_jump_insn_before): Likewise.
        (emit_debug_insn_before_noloc): Likewise.
        (emit_insn_after): Likewise.
        (emit_jump_insn_after): Likewise.
        (emit_call_insn_after): Likewise.
        (emit_debug_insn_after): Likewise.
        (set_insn_deleted): Likewise for param.

2018-06-18  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85358
        * config/rs6000/rs6000-modes.def (toplevel): Rework the 128-bit
        floating point modes, so that IFmode is numerically greater than
        TFmode, which is greater than KFmode using FRACTIONAL_FLOAT_MODE
        to declare the ordering.  This prevents IFmode from being
        converted to TFmode when long double is IEEE 128-bit on an ISA 3.0
        machine.  Include rs6000-modes.h to share the fractional values
        between genmodes* and the rest of the compiler.
        (IFmode): Likewise.
        (KFmode): Likewise.
        (TFmode): Likewise.
        * config/rs6000/rs6000-modes.h: New file.
        * config/rs6000/rs6000.c (rs6000_debug_reg_global): Change the
        meaning of rs6000_long_double_size so that 126..128 selects an
        appropriate 128-bit floating point type.
        (rs6000_option_override_internal): Likewise.
        * config/rs6000/rs6000.h (toplevel): Include rs6000-modes.h.
        (TARGET_LONG_DOUBLE_128): Change the meaning of
        rs6000_long_double_size so that 126..128 selects an appropriate
        128-bit floating point type.
        (LONG_DOUBLE_TYPE_SIZE): Update comment.
        * config/rs6000/rs6000.md (trunciftf2): Correct the modes of the
        source and destination to match the standard usage.
        (truncifkf2): Likewise.
        (copysign<mode>3, IEEE iterator): Rework copysign of float128 on
        ISA 2.07 to use an explicit clobber, instead of passing in a
        temporary.
        (copysign<mode>3_soft): Likewise.

2018-06-18  David Malcolm  <dmalcolm@redhat.com>

        * tree-vect-data-refs.c (vect_analyze_data_ref_dependences):
        Replace dump_printf_loc call with DUMP_VECT_SCOPE.
        (vect_slp_analyze_instance_dependence): Likewise.
        (vect_enhance_data_refs_alignment): Likewise.
        (vect_analyze_data_refs_alignment): Likewise.
        (vect_slp_analyze_and_verify_instance_alignment
        (vect_analyze_data_ref_accesses): Likewise.
        (vect_prune_runtime_alias_test_list): Likewise.
        (vect_analyze_data_refs): Likewise.
        * tree-vect-loop-manip.c (vect_update_inits_of_drs): Likewise.
        * tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
        (vect_analyze_scalar_cycles_1): Likewise.
        (vect_get_loop_niters): Likewise.
        (vect_analyze_loop_form_1): Likewise.
        (vect_update_vf_for_slp): Likewise.
        (vect_analyze_loop_operations): Likewise.
        (vect_analyze_loop): Likewise.
        (vectorizable_induction): Likewise.
        (vect_transform_loop): Likewise.
        * tree-vect-patterns.c (vect_pattern_recog): Likewise.
        * tree-vect-slp.c (vect_analyze_slp): Likewise.
        (vect_make_slp_decision): Likewise.
        (vect_detect_hybrid_slp): Likewise.
        (vect_slp_analyze_operations): Likewise.
        (vect_slp_bb): Likewise.
        * tree-vect-stmts.c (vect_mark_stmts_to_be_vectorized): Likewise.
        (vectorizable_bswap): Likewise.
        (vectorizable_call): Likewise.
        (vectorizable_simd_clone_call): Likewise.
        (vectorizable_conversion): Likewise.
        (vectorizable_assignment): Likewise.
        (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.
        * tree-vectorizer.h (DUMP_VECT_SCOPE): New macro.

2018-06-18  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/81384
        * builtin-types.def (BT_FN_SIZE_CONST_STRING_SIZE): New.
        * builtins.c (expand_builtin_strnlen): New function.
        (expand_builtin): Call it.
        (fold_builtin_n): Avoid setting TREE_NO_WARNING.
        * builtins.def (BUILT_IN_STRNLEN): New.
        * calls.c (maybe_warn_nonstring_arg): Handle BUILT_IN_STRNLEN.
        Warn for bounds in excess of maximum object size.
        * tree-ssa-strlen.c (maybe_set_strlen_range): Return tree representing
        single-value ranges.  Handle strnlen.
        (handle_builtin_strlen): Handle strnlen.
        (strlen_check_and_optimize_stmt): Same.
        * doc/extend.texi (Other Builtins): Document strnlen.

2018-06-18  Maya Rashish  <coypu@sdf.org>

        * config/alpha/openbsd.h (TARGET_DEFAULT): Define.
        (LINK_SPEC, STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
        (INTMAX_TYPE, UINTMAX_TYPE, WINT_TYPE): Likewise.

        * config/alpha/elf.h (STARTFILE_SPEC, ENDFILE_SPEC): Move from
        here to ...
        * config/alpha/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Here.

2018-06-18  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        * tree.c (escaped_string::escape): Replace cast to char * by
        const_cast<char *> (unescaped).

2018-06-18  Nick Clifton  <nickc@redhat.com>

        PR 84195
        * tree.c (escaped_string): New class.  Converts an unescaped
        string into its escaped equivalent.
        (warn_deprecated_use): Use the new class to convert the
        deprecation message, if present.
        (test_escaped_strings): New self test.
        (test_c_tests): Add test_escaped_strings.
        * doc/extend.texi (deprecated): Add a note that the
        deprecation message is affected by the -fmessage-length
        option, and that control characters will be escaped.
        (#pragma GCC error): Document this pragma.
        (#pragma GCC warning): Likewise.
        * doc/invoke.texi (-fmessage-length): Document this option's
        effect on the #warning and #error preprocessor directives and
        the deprecated attribute.

2018-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * tree.c (decl_value_expr_lookup): Revert latest change.
        (decl_value_expr_insert): Likewise.

2018-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (nonlocal_vlas): Delete.
        (nonlocal_vla_vars): Likewise.
        (gimplify_var_or_parm_decl): Do not add debug VAR_DECLs for non-local
        referenced VLAs.
        (gimplify_body): Do not create and destroy nonlocal_vlas.
        * tree-nested.c: Include diagnostic.h.
        (use_pointer_in_frame): Tweak.
        (lookup_field_for_decl): Add assertion and declare the transformation.
        (convert_nonlocal_reference_op) <PARM_DECL>: Rework and issue an
        internal error when the reference is in a wrong context.  Do not
        create a debug decl by default.
        (note_nonlocal_block_vlas): Delete.
        (convert_nonlocal_reference_stmt) <GIMPLE_BIND>: Do not call it.
        (convert_local_reference_op) <PARM_DECL>: Skip the frame decl.  Do not
        create a debug decl by default.
        (convert_gimple_call) <GIMPLE_CALL>: Issue an internal error when the
        call is in a wrong context.
        (fixup_vla_decls): New function.
        (finalize_nesting_tree_1): Adjust comment.  Call fixup_vla_decls if no
        debug variables were created.
        * tree.c (decl_value_expr_lookup): Add checking assertion.
        (decl_value_expr_insert): Likewise.

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

        PR middle-end/82479
        * ipa-fnsummary.c (will_be_nonconstant_expr_predicate): Handle CALL_EXPR.
        * tree-scalar-evolution.c (interpret_expr): Likewise.
        (expression_expensive_p): Likewise.
        * tree-ssa-loop-ivopts.c (contains_abnormal_ssa_name_p): Likewise.
        * tree-ssa-loop-niter.c (number_of_iterations_popcount): New.
        (number_of_iterations_exit_assumptions): Use number_of_iterations_popcount.
        (ssa_defined_by_minus_one_stmt_p): New.

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

        PR middle-end/64946
        * cfgexpand.c (expand_debug_expr): Hande ABSU_EXPR.
        * config/i386/i386.c (ix86_add_stmt_cost): Likewise.
        * dojump.c (do_jump): Likewise.
        * expr.c (expand_expr_real_2): Check operand type's sign.
        * fold-const.c (const_unop): Handle ABSU_EXPR.
        (fold_abs_const): Likewise.
        * gimple-pretty-print.c (dump_unary_rhs): Likewise.
        * gimple-ssa-backprop.c (backprop::process_assign_use): Likesie.
        (strip_sign_op_1): Likesise.
        * match.pd: Add new pattern to generate ABSU_EXPR.
        * optabs-tree.c (optab_for_tree_code): Handle ABSU_EXPR.
        * tree-cfg.c (verify_gimple_assign_unary): Likewise.
        * tree-eh.c (operation_could_trap_helper_p): Likewise.
        * tree-inline.c (estimate_operator_cost): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-vect-patterns.c (vect_recog_sad_pattern): Likewise.
        * tree.def (ABSU_EXPR): New.

2018-06-16  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86095
        * common.opt (Wunsafe-loop-optimizations): Add Ignore, remove Var,
        documented as preserved for backward compatibility only.
        * doc/invoke.texi: Remove -Wunsafe-loop-optimizations documentation.

        PR rtl-optimization/86108
        * bb-reorder.c (create_forwarder_block): Renamed to ...
        (create_eh_forwarder_block): ... this.  Split OLD_BB after labels and
        jump from new landing pad to the second part.
        (sjlj_fix_up_crossing_landing_pad, dw2_fix_up_crossing_landing_pad):
        Adjust callers.

2018-06-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85878
        * expr.c (expand_assignment): Remove now redundant COMPLEX_MODE_P
        check from first store_expr, use to_mode instead of GET_MODE (to_rtx).
        Only call store_expr for halves if the mode is the same.

        PR middle-end/86123
        * match.pd ((X / Y) == 0 -> X < Y): Don't transform complex divisions.
        Fix up comment formatting.

2018-06-15  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * typed-splay-tree.h (typed_splay_tree::remove): New function.
        (typed_splay_tree::closure,
        typed_splay_tree::inner_foreach_fn, typed_splay_tree::m_inner): Deleted.
        (typed_splay_tree::typed_splay_tree,
        typed_splay_tree::operator =): Declared private.
        (typed_splay_tree::splay_tree_key, typed_splay_tree::splay_tree_value,
        typed_splay_tree::splay_tree_node_s, typed_splay_tree::KDEL,
        typed_splay_tree::VDEL, typed_splay_tree::splay_tree_delete_helper,
        typed_splay_tree::rotate_left, typed_splay_tree::rotate_right,
        typed_splay_tree::splay_tree_splay,
        typed_splay_tree::splay_tree_foreach_helper,
        typed_splay_tree::splay_tree_insert,
        typed_splay_tree::splay_tree_remove,
        typed_splay_tree::splay_tree_lookup,
        typed_splay_tree::splay_tree_predecessor,
        typed_splay_tree::splay_tree_successor,
        typed_splay_tree::splay_tree_min,
        typed_splay_tree::splay_tree_max): Took over from splay-tree.c/.h.
        (typed_splay_tree::root, typed_splay_tree::comp,
        typed_splay_tree::delete_key,
        typed_splay_tree::delete_value): New data members.
        * typed-splay-tree.c (selftest::test_str_to_int): Add a test for
        typed_splay_tree::remove.

2018-06-15  Matthew Fortune  <matthew.fortune@mips.com>

        * config/mips/mips.h (ASM_SPEC): Pass through -mcrc, -mno-crc,
        -mginv and -mno-ginv to the assembler.
        * config/mips/mips.opt (-mcrc): New option.
        (-mginv): Likewise.
        * doc/invoke.text (-mcrc): Document.
        (-mginv): Likewise.

2018-06-15  Nick Clifton  <nickc@redhat.com>

        PR 84195
        * tree.c (escaped_string): New class.  Converts an unescaped
        string into its escaped equivalent.
        (warn_deprecated_use): Use the new class to convert the
        deprecation message, if present.
        (test_escaped_strings): New self test.
        (test_c_tests): Add test_escaped_strings.
        * doc/extend.texi (deprecated): Add a note that the
        deprecation message is affected by the -fmessage-length
        option, and that control characters will be escaped.
        (#pragma GCC error): Document this pragma.
        (#pragma GCC warning): Likewise.
        * doc/invoke.texi (-fmessage-length): Document this option's
        effect on the #warning and #error preprocessor directives and
        the deprecated attribute.

2018-06-15  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_slp_bb): Dump MSG_OPTIMIZED_LOCATIONS
        here, also noting vector size used.
        * tree-vectorizer.c (vectorize_loops): Adjust.  Note vector
        size used in MSG_OPTIMIZED_LOCATIONS dump.
        (pass_slp_vectorize::execute): Adjust.

2018-06-15  Claudiu Zissulescu  <claziss@synopsys.com>

        PR target/85968
        * config/arc/arc.c (arc_return_address_register): Fix
        if-condition.

2018-06-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/86159
        * tree-cfg.c (gimplify_build3): Do not strip sign conversions,
        leave useless conversion stripping to force_gimple_operand_gsi.
        (gimplify_build2): Likewise.
        (gimplify_build1): Likewise.

2018-06-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/86076
        * tree-cfg.c (move_stmt_op): unshare invariant addresses
        before adjusting their block.

2018-06-15  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config.gcc (riscv*-*-elf* | riscv*-*-rtems*): Use custom
        multilibs for *-*-rtems*.
        * config/riscv/t-rtems: New file.

2018-06-14  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86122
        * match.pd ((A +- CST1) +- CST2): Punt if last resort
        unsigned_type_for returns NULL.

        PR target/85945
        * lower-subreg.c (find_decomposable_subregs): Don't decompose float
        subregs of multi-word pseudos unless the float mode has word size.

2018-06-14  Richard Biener  <rguenther@suse.de>

        PR middle-end/86139
        * tree-vect-generic.c (build_word_mode_vector_type): Remove
        duplicate and harmful type_hash_canon.
        * tree.c (type_hash_canon): Assert we didn't find ourselves.

2018-06-14  Richard Biener  <rguenther@suse.de>

        PR ipa/86124
        * tree-ssa-struct-alias.c (create_variable_info_for): Handle
        NULL cgraph_node.

2018-06-14  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/rtems.h (STDINT_LONG32): Define.

2018-06-13  Matthew Fortune  <matthew.fortune@mips.com>
            Prachi Godbole  <prachi.godbole@imgtec.com>

        * config/mips/mips-cpus.def: Define P6600.
        * config/mips/mips-tables.opt: Regenerate.
        * config/mips/mips.c (mips_ucbranch_type): New enum.
        (mips_rtx_cost_data): Add support for P6600.
        (mips_issue_rate): Likewise.
        (mips_multipass_dfa_lookahead): Likewise.
        (mips_avoid_hazard): Likewise.
        (mips_reorg_process_insns): Likewise.
        (mips_classify_branch_p6600): New function.
        * config/mips/mips.h (TUNE_P6600): New define.
        (MIPS_ISA_LEVEL_SPEC): Infer mips64r6 from p6600.
        (ENABLE_LD_ST_PAIRS): Enable load/store bonding for p6600.
        * config/mips/mips.md: Include p6600.md.
        (processor): Add p6600.
        * config/mips/p6600.md: New file.
        * doc/invoke.texi: Add p6600 to supported architectures.

2018-06-13  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86114
        * gimple-fold.c (gimple_fold_builtin_strlen): Only handle LHS
        of integer types.
        * tree-ssa-strlen.c (maybe_set_strlen_range): Same.

2018-06-13  Richard Biener  <rguenther@suse.de>

        * tree-vect-patterns.c (vect_recog_vector_vector_shift_pattern):
        Properly set vector type of the intermediate stmt.
        * tree-vect-stmts.c (vectorizable_operation): The destination
        var always has vectype_out type.

2018-06-13  Jeff Law  <law@redhat.com>

        * config/rl78/rl78.c (move_elim_pass): Use TDF_NONE rather than
        integer 0 for argument to print_rtl_with_bb.
        (rl78_reorg): Likewise.

2018-06-13  David Malcolm  <dmalcolm@redhat.com>

        * config/arc/arc.c (hwloop_optimize): Strengthen local "end_label"
        from rtx to rtx_insn *.
        * config/bfin/bfin.c (hwloop_optimize): Likewise for local
        "label".
        (add_sched_insns_for_speculation): Likewise for local "target",
        converting usage of JUMP_LABEL to JUMP_LABEL_AS_INSN.
        * config/c6x/c6x.c (reorg_split_calls): Strengthen param "call_labels"
        from rtx_insn ** to rtx_code_label **.
        (reorg_emit_nops): Likewise.
        (c6x_reorg): Likewise for local "call_labels".
        * config/sh/sh-protos.h (get_dest_uid): Strengthen 1st param from
        rtx to rtx_insn *.
        * config/sh/sh.c (dump_table): Strengthen local "lab" from rtx to
        rtx_code_label *, adding safe_as_a <rtx_code_label *> casts to
        the loops over LABEL_REFS.
        (fixup_addr_diff_vecs): Add as_a <rtx_insn *> to usage of
        braf_label.
        (barrier_align): Convert usage of JUMP_LABEL to JUMP_LABEL_AS_INSN.
        (get_dest_uid): Strengthen param "label" from rtx to rtx_insn *.
        (split_branches): Strengthen local "olabel" from rtx to
        rtx_insn *, adding a safe_as_a cast.
        * emit-rtl.c (next_real_insn): Strengthen param from "rtx"
        to "rtx_insn *".
        (add_insn_after): Likewise for first two params.
        (add_insn_before): Likewise.
        (remove_insn): Likewise for param.
        (emit_pattern_before_noloc): Likewise for second and third params.
        (emit_jump_insn_before_noloc): Convert NULL_RTX to NULL.
        (emit_call_insn_before_noloc): Likewise.
        (emit_debug_insn_before_noloc): Strengthen "before" param from "rtx"
        to "rtx_insn *".
        (emit_barrier_before): Likewise.
        (emit_label_before): Strengthen "label" param from "rtx" to
        "rtx_code_label *".  Strengthen "before" param from "rtx" to
        "rtx_insn *".
        (emit_insn_after_1): Strengthen "after" param from "rtx" to
        "rtx_insn *".
        (emit_pattern_after_noloc): Likewise.
        (emit_insn_after_noloc): Likewise.
        (emit_jump_insn_after_noloc): Likewise.
        (emit_call_insn_after_noloc): Likewise.
        (emit_debug_insn_after_noloc): Likewise.
        (emit_barrier_after): Likewise.
        (emit_label_after): Likewise for both params.
        (emit_pattern_after_setloc): Likewise for "after" param.  Convert
        "loc" param from "int" to "location_t".
        (emit_insn_after_setloc): Likewise.
        (emit_jump_insn_after_setloc): Likewise.
        (emit_call_insn_after_setloc): Likewise.
        (emit_debug_insn_after_setloc): Likewise.
        (emit_pattern_before_setloc): Likewise for "before" param.  Convert
        "loc" param from "int" to "location_t".
        (emit_pattern_before): Convert NULL_RTX to NULL.
        (emit_insn_before_setloc): Convert "loc" param from "int" to
        "location_t".
        (emit_jump_insn_before_setloc): Likewise.
        (emit_call_insn_before_setloc): Likewise.
        (emit_debug_insn_before_setloc): Strengthen "before" param from rtx to
        rtx_insn *.  Convert "loc" param from "int" to "location_t".
        * rtl.h (emit_insn_before_setloc, emit_jump_insn_before_setloc,
        emit_call_insn_before_setloc, emit_debug_insn_before_setloc):
        Convert 3rd param from "int" to "location_t".
        (emit_barrier_before, emit_barrier_after, next_real_insn):
        Strengthen param from rtx to rtx_insn *.
        (emit_label_before): Strengthen 1st param from "rtx" to
        "rtx_code_label *".  Strengthen 2nd param from "rtx" to
        "rtx_insn *".
        (emit_insn_after_noloc, emit_jump_insn_after_noloc,
        emit_call_insn_after_noloc, emit_debug_insn_after_noloc):
        Strengthen 2nd param from "rtx" to "rtx_insn *".
        (emit_insn_after_setloc, emit_jump_insn_after_setloc)
        emit_call_insn_after_setloc, emit_debug_insn_after_setloc):
        Likewise. Convert 3rd param from "int" to "location_t".
        (emit_label_after): Strengthen 1st param from "rtx" to
        "rtx_code_label *".
        (next_real_insn, remove_insn): Strengthen param from "rtx" to
        "rtx_insn *".
        (add_insn_before, add_insn_after): Strengthen 1st and 2nd params
        from "rtx" to "rtx_insn *".

2018-06-13  Jan Hubicka  <hubicka@gcc.gnu.org>

        * cgraph.c (cgraph_node::get_untransformed_body): Dump function
        bodies streamed in with -Q.
        * dumpfile.c (dump_files): Add lto-stream-out dump file.
        * dumpfile.h (tree_dump_index): Add lto_stream_out.
        * gimple-streamer-out.c: Include gimple-pretty-print.h
        (output_bb): Dump stmts streamed.
        * lto-section-out.c: Include print-tree.h
        (lto_begin_section): Dump sections created.
        (lto_output_decl_index): Dump decl encoded.
        * lto-streamer-out.c: Include print-tree.h
        (create_output_block): Dump output block created.
        (DFS::DFS_write_tree_body): Dump DFS SCCs streamed.
        (output_function): Dump function output.
        (output_constructor): Dump constructor streamed.
        (write_global_stream): Output indexes encoded.
        (produce_asm_for_decls): Dump streams encoded.
        * lto-streamer.c (streamer_dump_file): New global var.
        * lto-streamer.h (streamer_dump_file): Declare.
        * passes.c (ipa_write_summaries): Initialize streamer dump.
        * varpool.c (varpool_node::get_constructor): Dump constructors streamed
        in.

2018-06-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/86048
        * config/i386/winnt.c (i386_pe_seh_cold_init): Do not emit negative
        offsets for register save directives.  Emit a second batch of save
        directives, if need be, when the function accesses prior frames.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/fpu.md (fmasf4): Force operand to register.
        (fnmasf4): Likewise.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (arc_pad_return): Remove.
        * config/arc/arc.c (machine_function): Remove force_short_suffix
        and size_reason.
        (arc_print_operand): Adjust printing of '&'.
        (arc_verify_short): Remove conditional printing of short suffix.
        (arc_final_prescan_insn): Remove reference to size_reason.
        (pad_return): New function.
        (arc_reorg): Call pad_return.
        (arc_pad_return): Remove.
        (arc_init_machine_status): Remove reference to force_short_suffix.
        * config/arc/arc.md (vunspec): Add VUNSPEC_ARC_BLOCKAGE.
        (attr length): When attribute iscompact is true force to 2
        regardless; in the case of maybe check if we want to force the
        instruction to have 4 bytes length.
        (nopv): Change it to generate 4 byte long nop as well.
        (blockage): New pattern.
        (simple_return): Remove call to arc_pad_return.
        (p_return_i): Likewise.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/elf.h (LINK_GCC_C_SEQUENCE_SPEC): Define.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/builtins.def (SYNC): SYNC instruction is valid on all
        ARC cores.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (atomic_exchangesi): EX instruction is default
        for ARC700 and ARCv2.

2018-06-13  Chenghua Xu <paul.hua.gm@gmail.com>

        PR target/86076
        * config/mips/loongson.md (vec_setv4hi): Gen_lowpart for
        operands[2] instead of operands[1].


2018-06-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (simplify_operand_subreg): In the paradoxical
        case, check whether the outer register overlaps an unallocatable
        register, not just whether it fits the required class.

2018-06-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * poly-int.h (can_div_trunc_p): Add new overload in which all values
        are poly_ints.
        * alias.c (get_addr): Extend CONST_INT handling to poly_int_rtx_p.
        (memrefs_conflict_p): Likewise.
        (init_alias_analysis): Likewise.
        * cfgexpand.c (expand_debug_expr): Likewise.
        * combine.c (combine_simplify_rtx, force_int_to_mode): Likewise.
        * cse.c (fold_rtx): Likewise.
        * explow.c (adjust_stack, anti_adjust_stack): Likewise.
        * expr.c (emit_block_move_hints): Likewise.
        (clear_storage_hints, push_block, emit_push_insn): Likewise.
        (store_expr_with_bounds, reduce_to_bit_field_precision): Likewise.
        (emit_group_load_1): Use rtx_to_poly_int64 for group offsets.
        (emit_group_store): Likewise.
        (find_args_size_adjust): Use strip_offset.  Use rtx_to_poly_int64
        to read the PRE/POST_MODIFY increment.
        * calls.c (store_one_arg): Use strip_offset.
        * rtlanal.c (rtx_addr_can_trap_p_1): Extend CONST_INT handling to
        poly_int_rtx_p.
        (set_noop_p): Use rtx_to_poly_int64 for the elements selected
        by a VEC_SELECT.
        * simplify-rtx.c (avoid_constant_pool_reference): Use strip_offset.
        (simplify_binary_operation_1): Extend CONST_INT handling to
        poly_int_rtx_p.
        * var-tracking.c (compute_cfa_pointer): Take a poly_int64 rather
        than a HOST_WIDE_INT.
        (hard_frame_pointer_adjustment): Change from HOST_WIDE_INT to
        poly_int64.
        (adjust_mems, add_stores): Update accodingly.
        (vt_canonicalize_addr): Track polynomial offsets.
        (emit_note_insn_var_location): Likewise.
        (vt_add_function_parameter): Likewise.
        (vt_initialize): Likewise.

2018-06-12  Jeff Law  <law@redhat.com>

        * config.gcc (alpha*-*-freebsd*): Remove.
        * config/alpha/freebsd.h: Remove.

2018-06-12  David Malcolm  <dmalcolm@redhat.com>

        PR other/69968
        * spellcheck-tree.c (levenshtein_distance): Rename to...
        (get_edit_distance): ...this, and update for underlying renaming.
        * spellcheck-tree.h (levenshtein_distance): Rename to...
        (get_edit_distance): ...this.
        * spellcheck.c (levenshtein_distance): Rename to...
        (get_edit_distance): ...this.  Convert from Levenshtein distance
        to Damerau-Levenshtein distance by supporting transpositions of
        adjacent characters.  Rename "v1" to "v_next" and "v0" to
        "v_one_ago".
        (selftest::levenshtein_distance_unit_test_oneway): Rename to...
        (selftest::test_edit_distance_unit_test_oneway): ...this, and
        update for underlying renaming.
        (selftest::levenshtein_distance_unit_test): Rename to...
        (selftest::test_get_edit_distance_unit): ...this, and update for
        underlying renaming.
        (selftest::test_find_closest_string): Add example from PR 69968
        where transposition helps
        (selftest::test_metric_conditions): Update for renaming.
        (selftest::test_metric_conditions): Likewise.
        (selftest::spellcheck_c_tests): Likewise.
        * spellcheck.h (levenshtein_distance): Rename both overloads to...
        (get_edit_distance): ...this.
        (best_match::consider): Update for renaming.

2018-06-12  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/85259
        * builtins.c (compute_objsize): Handle constant offsets.
        * gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Return
        true iff a warning has been issued.
        * gimple.h (gimple_nonartificial_location): New function.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Call
        gimple_nonartificial_location and handle -Wno-system-headers.
        (handle_builtin_stxncpy): Same.

2018-06-12  Martin Sebor  <msebor@redhat.com>

        PR c/85931
        * fold-const.c (operand_equal_p): Handle SAVE_EXPR.

2018-06-12  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
        BUILTIN_VEC_XST entries for pointer to double and long long.

2018-06-12  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85990
        * config/i386/gnu-user.h (TARGET_THREAD_SPLIT_STACK_OFFSET):
        Update comments.
        * config/i386/gnu-user64.h (TARGET_THREAD_SPLIT_STACK_OFFSET):
        Likewise.

2018-06-12  Martin Liska  <mliska@suse.cz>

        * doc/options.texi: Document IntegerRange.

2018-06-12  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.opt: Make MPX-related options as Deprecated.
        * opt-functions.awk: Handle Deprecated flag.
        * opts-common.c (decode_cmdline_option): Handle cl_deprecated
        and report error.
        (read_cmdline_option): Report warning for a deprecated option.
        * opts.h (struct cl_option): Add new field cl_deprecated.
        (CL_ERR_DEPRECATED): New.

2018-06-12  Martin Liska  <mliska@suse.cz>

        * doc/options.texi: Document Deprecated option flag.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arch.h (arc_extras): New enum.
        (arc_cpu_t):Add field extra.
        (arc_cpu_types): Consider the extras.
        * config/arc/arc-cpus.def: Add extras info.
        * config/arc/arc-opts.h (processor_type): Consider extra field.
        * config/arc/arc.c (arc_override_options): Handle extra field.

2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arch.h: Update ARC_OPTX macro.
        * config/arc/arc-options.def (ARC_OPTX): Introduce a new doc
        field.
        * config/arc/arc.c (arc_init): Update pic warning.
        (irq_range): Update irq range parsing warnings.
        (arc_override_options): Update various warning messages.
        (arc_handle_aux_attribute): Likewise.

2018-06-12  Robert Suchanek  <robert.suchanek@mips.com>

        * config/mips/i6400.md (i6400_fpu_fadd): Remove frint.

2018-06-12  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        * doc/sourcebuild.texi: Document usage of line number 0 in verify
        compiler messages directives.

2018-06-12  Matthew Fortune  <mfortune@gmail.com>

        * config/mips/mips-cpus.def: New MIPS_CPU for i6500.
        * config/mips/mips-tables.opt: Regenerate.
        * config/mips/mips.h (MIPS_ISA_LEVEL_SPEC): Mark i6500 as
        mips64r6.
        * doc/invoke.texi: Document -march=i6500.

2018-06-12  Prachi Godbole  <prachi.godbole@imgtec.com>

        * config/mips/i6400.md (i6400_gpmuldiv): Remove cpu_unit.
        (i6400_gpmul): Add cpu_unit.
        (i6400_gpdiv): Likewise.
        (i6400_msa_add_d): Update reservations.
        (i6400_msa_int_add) Likewise.
        (i6400_msa_short_logic3) Likewise.
        (i6400_msa_short_logic2) Likewise.
        (i6400_msa_short_logic) Likewise.
        (i6400_msa_move) Likewise.
        (i6400_msa_cmp) Likewise.
        (i6400_msa_short_float2) Likewise.
        (i6400_msa_div_d) Likewise.
        (i6400_msa_long_logic1) Likewise.
        (i6400_msa_long_logic2) Likewise.
        (i6400_msa_mult) Likewise.
        (i6400_msa_long_float2) Likewise.
        (i6400_msa_long_float4) Likewise.
        (i6400_msa_long_float5) Likewise.
        (i6400_msa_long_float8) Likewise.
        (i6400_fpu_fadd): Include frint type.
        (i6400_fpu_store): New define_insn_reservation.
        (i6400_fpu_load): Likewise.
        (i6400_fpu_move): Likewise.
        (i6400_fpu_fcmp): Likewise.
        (i6400_fpu_fmadd): Likewise.
        (i6400_int_mult): Include imul3nc type and update reservation.
        (i6400_int_div): Include idiv3 type and update reservation.
        (i6400_int_load): Update to check type not move_type.
        (i6400_int_store): Likewise.
        (i6400_int_prefetch): Set zero latency.

2018-06-12  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc.c: Document new %@{...} sequence.
        (LINK_COMMAND_SPEC): Use it for the -L switches.
        (cpp_unique_options): Use it for the -I switches.
        (at_file_argbuf): New global variable.
        (in_at_file): Likewise.
        (alloc_args): Create at_file_argbuf.
        (clear_args): Truncate at_file_argbuf.
        (store_arg): If in_at_file, push the argument onto at_file_argbuf.
        (open_at_file): New function.
        (close_at_file): Likewise.
        (create_at_file): Delete.
        (do_spec_1) <'i'>: Use open_at_file/close_at_file.
        <'o'>: Likewise.
        <'@'>: New case.
        (validate_switches_from_spec): Deal with %@{...} sequence.
        (validate_switches): Likewise.
        (driver::finalize): Call clear_args.

2018-06-11  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>

        * config/vx-common.h (USE_TM_CLONE_REGISTRY): #define to 0.

2018-06-11  Martin Sebor  <msebor@redhat.com>

        * doc/invoke.texi (-Wall): List -Wc++17-compat.
        (Wno-class-memaccess): Add @opindex.
        (Wno-templates, Wno-multiple-inheritance): Same.
        (Wno-virtual-inheritance, Wno-namespaces): Same.
        (Wno-pedantic, Wno-chkp, Wcoverage-mismatch): Same.
        (Wno-format-overflow, Wno-format-truncation): Same.
        (Wno-unused-local-typedefs, Walloc-size-larger-than): Same.
        (Wno-alloc-size-larger-than, Wframe-larger-than): Same
        (Wno-stack-usage, Wno-c++-compat, Wno-c++11-compat): Same.
        (Wno-c++14-compat, Wno-c++17-compat, Wno-openmp-simd): Same.
        (Wno-unsuffixed-float-constants, Wno-addr-space-convert): Same.
        (Wno-misspelled-isr): Same.

2018-06-11  Martin Sebor  <msebor@redhat.com>

        * PR tree-optimization/86083
        * tree-ssa-strlen.c (handle_char_store): Use tree_expr_nonzero_p.

2018-06-11  Zhouyi Zhou <zhouzhouyi@gmail.com>

        * tree-eh.c (lower_eh_constructs_2): Add a comma to comment.

2018-06-11  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85755
        * config/rs6000/rs6000.md (*movdi_internal32): Put constraint modifiers
        on the correct operand.
        (*movdi_internal64): Ditto.

2018-06-11  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86089
        * tree-ssa-strlen.c (get_string_length): Move back removed hunk.

2018-06-11  Julia Koval  <julia.koval@intel.com>

        * config/i386/vaesintrin.h (_mm_aesdec_epi128, _mm_aesdeclast_epi128)
        _mm_aesenc_epi128, _mm_aesenclast_epi128: Remove.
        * config/i386/vpclmulqdqintrin.h (_mm_clmulepi64_epi128): Remove.

2018-06-11  Olivier Hainque  <hainque@adacore.com>

        * dwarf2out.c (gen_compile_unit_die): Fallout to DW_LANG_Ada83
        for Ada with strict dwarf2.

2018-06-08  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/85755
        * config/rs6000/rs6000.c (mem_operand_gpr): Enable PRE_INC and PRE_DEC
        addresses.

2018-06-08  Jan Hubicka  <hubicka@ucw.cz>

        * dumpfile.c (FIRST_ME_AUTO_NUMBERED_DUMP): Bump to 4.

2018-06-08  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_passes_ieee128): Protect with #if
        TARGET_ELF.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * tree-cfg.h (debug_function): Fix argument type to match
        implementation.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * config/powerpcspe/powerpcspe.c (rs6000_xcoff_visibility):
        Remove usage of MPX-related (and removed) fields.
        * config/rs6000/rs6000.c (rs6000_xcoff_visibility): Likewise.

2018-06-08  David Malcolm  <dmalcolm@redhat.com>

        * cfg.c (debug): Use TDF_NONE rather than 0.
        * cfghooks.c (debug): Likewise.
        * dumpfile.c (DUMP_FILE_INFO): Likewise; also for OPTGROUP.
        (struct dump_option_value_info): Convert to...
        (struct kv_pair): ...this template type.
        (dump_options): Convert to kv_pair<dump_flags_t>; use TDF_NONE
        rather than 0.
        (optinfo_verbosity_options): Likewise.
        (optgroup_options): Convert to kv_pair<optgroup_flags_t>; use
        OPTGROUP_NONE.
        (gcc::dump_manager::dump_register): Use optgroup_flags_t rather
        than int for "optgroup_flags" param.
        (dump_generic_expr_loc): Use dump_flags_t rather than int for
        "dump_kind" param.
        (dump_dec): Likewise.
        (dump_finish): Use TDF_NONE rather than 0.
        (gcc::dump_manager::opt_info_enable_passes): Use optgroup_flags_t
        rather than int for "optgroup_flags" param.  Use TDF_NONE rather
        than 0.  Update for change to option_ptr.
        (opt_info_switch_p_1): Convert "optgroup_flags" param from int *
        to optgroup_flags_t *.  Use TDF_NONE and OPTGROUP_NONE rather than
        0.  Update for changes to optinfo_verbosity_options and
        optgroup_options.
        (opt_info_switch_p): Convert optgroup_flags from int to
        optgroup_flags_t.
        (dump_basic_block): Use dump_flags_t rather than int
        for "dump_kind" param.
        * dumpfile.h (TDF_ADDRESS, TDF_SLIM, TDF_RAW, TDF_DETAILS,
        TDF_STATS, TDF_BLOCKS, TDF_VOPS, TDF_LINENO, TDF_UID)
        TDF_STMTADDR, TDF_GRAPH, TDF_MEMSYMS, TDF_RHS_ONLY, TDF_ASMNAME,
        TDF_EH, TDF_NOUID, TDF_ALIAS, TDF_ENUMERATE_LOCALS, TDF_CSELIB,
        TDF_SCEV, TDF_GIMPLE, TDF_FOLDING, MSG_OPTIMIZED_LOCATIONS,
        MSG_MISSED_OPTIMIZATION, MSG_NOTE, MSG_ALL, TDF_COMPARE_DEBUG,
        TDF_NONE): Convert from macros to...
        (enum dump_flag): ...this new enum.
        (dump_flags_t): Update to use enum.
        (operator|, operator&, operator~, operator|=, operator&=):
        Implement for dump_flags_t.
        (OPTGROUP_NONE, OPTGROUP_IPA, OPTGROUP_LOOP, OPTGROUP_INLINE,
        OPTGROUP_OMP, OPTGROUP_VEC, OPTGROUP_OTHER, OPTGROUP_ALL):
        Convert from macros to...
        (enum optgroup_flag): ...this new enum.
        (optgroup_flags_t): New typedef.
        (operator|, operator|=): Implement for optgroup_flags_t.
        (struct dump_file_info): Convert field "alt_flags" to
        dump_flags_t.  Convert field "optgroup_flags" to
        optgroup_flags_t.
        (dump_basic_block): Use dump_flags_t rather than int for param.
        (dump_generic_expr_loc): Likewise.
        (dump_dec): Likewise.
        (dump_register): Convert param "optgroup_flags" to
        optgroup_flags_t.
        (opt_info_enable_passes): Likewise.
        * early-remat.c (early_remat::dump_edge_list): Use TDF_NONE rather
        than 0.
        * gimple-pretty-print.c (debug): Likewise.
        * gimple-ssa-store-merging.c (bswap_replace): Likewise.
        (merged_store_group::apply_stores): Likewise.
        * gimple-ssa-strength-reduction.c (insert_initializers): Likewise.
        * gimple.c (verify_gimple_pp): Likewise.
        * graphite-poly.c (print_pbb_body): Likewise.
        * passes.c (pass_manager::register_one_dump_file): Convert
        local "optgroup_flags" to optgroup_flags_t.
        * print-tree.c (print_node): Use TDF_NONE rather than 0.
        (debug): Likewise.
        (debug_body): Likewise.
        * tree-pass.h (struct pass_data): Convert field "optgroup_flags"
        to optgroup_flags_t.
        * tree-pretty-print.c (print_struct_decl): Use TDF_NONE rather
        than 0.
        * tree-ssa-math-opts.c (convert_mult_to_fma_1): Likewise.
        (convert_mult_to_fma): Likewise.
        * tree-ssa-reassoc.c (undistribute_ops_list): Likewise.
        * tree-ssa-sccvn.c (vn_eliminate): Likewise.
        * tree-vect-data-refs.c (dump_lower_bound): Convert param
        "dump_kind" to dump_flags_t.

2018-06-08  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (min, max): Delete.

2018-06-08  Segher Boessenkool  <segher@kernel.crashing.org>

        * doc/invoke.texi (RS/6000 and PowerPC Options): Delete mention of
        -mabi=spe and -mabi=no-spe.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-pure-const.c (propagate_pure_const): Use ::get at places
        where we expect an existing summary.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-inline-analysis.c (simple_edge_hints): Use ::get method.
        * ipa-inline.h (estimate_edge_growth): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * cgraph.c (function_version_hasher::hash): Use
        cgraph_node::get_uid ().
        (function_version_hasher::equal):
        * cgraph.h (cgraph_node::get_uid): New method.
        * ipa-inline.c (update_caller_keys): Use
        cgraph_node::get_uid ().
        (update_callee_keys): Likewise.
        * ipa-utils.c (searchc): Likewise.
        (ipa_reduced_postorder): Likewise.
        * lto-cgraph.c (input_node): Likewise.
        * passes.c (is_pass_explicitly_enabled_or_disabled): Likewise.
        * symbol-summary.h (symtab_insertion): Likewise.
        (symtab_removal): Likewise.
        (symtab_duplication): Likewise.
        * tree-pretty-print.c (dump_function_header): Likewise.
        * tree-sra.c (convert_callers_for_node): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * cgraph.c (symbol_table::create_edge): Always assign a new
        unique number.
        (symbol_table::free_edge): Do not recycle numbers.
        * cgraph.h (cgraph_edge::get): New method.
        * symbol-summary.h (symtab_removal): Use it.
        (symtab_duplication): Likewise.
        (call_summary::hashable_uid): Remove.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-inline-analysis.c (inline_edge_removal_hook): Remove.
        (initialize_growth_caches): Remove.
        (free_growth_caches): Likewise.
        (do_estimate_edge_time): Use edge_growth_cache.
        (do_estimate_edge_size): Likewise.
        (do_estimate_edge_hints): Likewise.
        * ipa-inline.c (reset_edge_caches): Likewise.
        (recursive_inlining): Likewise.
        (inline_small_functions): Likewise.
        * ipa-inline.h (initialize_growth_caches): Remove.
        (estimate_edge_size): Likewise.
        (estimate_edge_time): Likewise.
        (estimate_edge_hints): Likewise.
        (reset_edge_growth_cache): Likewise.
        * symbol-summary.h (call_summary::remove): New method.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-cp.c (class edge_clone_summary): New summary.
        (grow_edge_clone_vectors): Remove.
        (ipcp_edge_duplication_hook): Remove.
        (class edge_clone_summary_t): New call_summary class.
        (ipcp_edge_removal_hook): Remove.
        (edge_clone_summary_t::duplicate): New function.
        (get_next_cgraph_edge_clone): Use edge_clone_summaries.
        (create_specialized_node): Likewise.
        (ipcp_driver): Initialize edge_clone_summaries and do not
        register hooks.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * symbol-summary.h (get): New function.
        (call_summary::m_initialize_when_cloning): New class member.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * cgraph.c (cgraph_node::remove): Do not recycle uid.
        * cgraph.h (symbol_table::release_symbol): Do not pass uid.
        (symbol_table::allocate_cgraph_symbol): Do not set uid.
        * passes.c (uid_hash_t): Record removed_nodes by their uids.
        (remove_cgraph_node_from_order): Use the removed_nodes set.
        (do_per_function_toporder): Likwise.
        * symbol-summary.h (symtab_insertion): Use cgraph_node::uid
        instead of summary_uid.
        (symtab_removal): Likewise.
        (symtab_duplication): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-cp.c (ipcp_store_bits_results): Use
        ipcp_transformation_sum.
        (ipcp_store_vr_results): Likewise.
        * ipa-prop.c (ipcp_grow_transformations_if_necessary): Renamed
        to ...
        (ipcp_transformation_initialize): ... this.
        (ipa_set_node_agg_value_chain):
        (ipa_node_params_t::duplicate): Use ipcp_transformation_sum.
        (write_ipcp_transformation_info): Likewise.
        (read_ipcp_transformation_info): Likewise.
        (ipcp_update_bits): Likewise.
        (ipcp_update_vr): Likewise.
        (ipcp_transform_function): Likewise.
        * ipa-prop.h: Rename ipcp_transformation_summary to
        ipcp_transformation.
        (class ipcp_transformation_t): New function summary.
        (ipcp_get_transformation_summary): Use ipcp_transformation_sum.
        (ipa_get_agg_replacements_for_node): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-pure-const.c (struct funct_state_d): Do it class instead
        of struct.
        (class funct_state_summary_t): New function_summary class.
        (has_function_state): Remove.
        (get_function_state): Likewise.
        (set_function_state): Likewise.
        (add_new_function): Likewise.
        (funct_state_summary_t::insert): New function.
        (duplicate_node_data): Remove.
        (remove_node_data): Remove.
        (funct_state_summary_t::duplicate): New function.
        (register_hooks): Create new funct_state_summaries.
        (pure_const_generate_summary): Use it.
        (pure_const_write_summary): Likewise.
        (pure_const_read_summary): Likewise.
        (propagate_pure_const): Likewise.
        (propagate_nothrow): Likewise.
        (dump_malloc_lattice): Likewise.
        (propagate_malloc): Likewise.
        (execute): Do not register hooks, just remove summary
        instead.
        (pass_ipa_pure_const::pass_ipa_pure_const): Simplify
        constructor.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-reference.c (remove_node_data): Remove.
        (duplicate_node_data): Likewise.
        (class ipa_ref_var_info_summary_t): New class.
        (class ipa_ref_opt_summary_t): Likewise.
        (get_reference_vars_info): Use ipa_ref_var_info_summaries.
        (get_reference_optimization_summary): Use
        ipa_ref_opt_sum_summaries.
        (set_reference_vars_info): Remove.
        (set_reference_optimization_summary): Likewise.
        (ipa_init): Create summaries.
        (init_function_info): Use function summary.
        (ipa_ref_opt_summary_t::duplicate): New function.
        (ipa_ref_opt_summary_t::remove): New function.
        (get_read_write_all_from_node): Fix GNU coding style.
        (propagate): Use function summary.
        (write_node_summary_p): Fix GNU coding style.
        (stream_out_bitmap): Likewise.
        (ipa_reference_read_optimization_summary): Use function summary.
        (ipa_reference_c_finalize): Do not release hooks.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * ipa-fnsummary.c (dump_ipa_call_summary): Use ::get method.
        (analyze_function_body): Extract multiple calls of get_create.
        * ipa-inline-analysis.c (simple_edge_hints): Likewise.
        * ipa-inline.c (recursive_inlining): Use ::get method.
        * ipa-inline.h (estimate_edge_growth): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * hsa-common.h (enum hsa_function_kind): Rename HSA_NONE to
        HSA_INVALID.
        (hsa_function_summary::hsa_function_summary): Use the new enum
        value.
        (hsa_gpu_implementation_p): Use hsa_summaries::get.
        * hsa-gen.c (hsa_get_host_function): Likewise.
        (get_brig_function_name): Likewise.
        * ipa-hsa.c (process_hsa_functions): Likewise.
        (ipa_hsa_write_summary): Likewise.
        * symbol-summary.h (symtab_duplication): Use ::get function/
        (get): New function.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.c (ix86_can_inline_p): Use get_create instead
        of get.
        * hsa-common.c (hsa_summary_t::link_functions): Likewise.
        (hsa_register_kernel): Likewise.
        * hsa-common.h (hsa_gpu_implementation_p): Likewise.
        * hsa-gen.c (hsa_get_host_function): Likewise.
        (get_brig_function_name): Likewise.
        (generate_hsa): Likewise.
        (pass_gen_hsail::execute): Likewise.
        * ipa-cp.c (ipcp_cloning_candidate_p): Likewise.
        (devirtualization_time_bonus): Likewise.
        (ipcp_propagate_stage): Likewise.
        * ipa-fnsummary.c (redirect_to_unreachable): Likewise.
        (edge_set_predicate): Likewise.
        (evaluate_conditions_for_known_args): Likewise.
        (evaluate_properties_for_edge): Likewise.
        (ipa_fn_summary::reset): Likewise.
        (ipa_fn_summary_t::duplicate): Likewise.
        (dump_ipa_call_summary): Likewise.
        (ipa_dump_fn_summary): Likewise.
        (analyze_function_body): Likewise.
        (compute_fn_summary): Likewise.
        (estimate_edge_devirt_benefit): Likewise.
        (estimate_edge_size_and_time): Likewise.
        (estimate_calls_size_and_time): Likewise.
        (estimate_node_size_and_time): Likewise.
        (inline_update_callee_summaries): Likewise.
        (remap_edge_change_prob): Likewise.
        (remap_edge_summaries): Likewise.
        (ipa_merge_fn_summary_after_inlining): Likewise.
        (ipa_update_overall_fn_summary): Likewise.
        (read_ipa_call_summary): Likewise.
        (inline_read_section): Likewise.
        (write_ipa_call_summary): Likewise.
        (ipa_fn_summary_write): Likewise.
        (ipa_free_fn_summary): Likewise.
        * ipa-hsa.c (process_hsa_functions): Likewise.
        (ipa_hsa_write_summary): Likewise.
        (ipa_hsa_read_section): Likewise.
        * ipa-icf.c (sem_function::merge): Likewise.
        * ipa-inline-analysis.c (simple_edge_hints): Likewise.
        (do_estimate_edge_time): Likewise.
        (estimate_size_after_inlining): Likewise.
        (estimate_growth): Likewise.
        (growth_likely_positive): Likewise.
        * ipa-inline-transform.c (clone_inlined_nodes): Likewise.
        (inline_call): Likewise.
        * ipa-inline.c (caller_growth_limits): Likewise.
        (can_inline_edge_p): Likewise.
        (can_inline_edge_by_limits_p): Likewise.
        (compute_uninlined_call_time): Likewise.
        (compute_inlined_call_time): Likewise.
        (want_inline_small_function_p): Likewise.
        (edge_badness): Likewise.
        (update_caller_keys): Likewise.
        (update_callee_keys): Likewise.
        (recursive_inlining): Likewise.
        (inline_small_functions): Likewise.
        (inline_to_all_callers_1): Likewise.
        (dump_overall_stats): Likewise.
        (early_inline_small_functions): Likewise.
        (early_inliner): Likewise.
        * ipa-inline.h (estimate_edge_growth): Likewise.
        * ipa-profile.c (ipa_propagate_frequency_1): Likewise.
        * ipa-prop.c (ipa_make_edge_direct_to_target): Likewise.
        * ipa-prop.h (IPA_NODE_REF): Likewise.
        (IPA_EDGE_REF): Likewise.
        * ipa-pure-const.c (malloc_candidate_p): Likewise.
        (propagate_malloc): Likewise.
        * ipa-split.c (execute_split_functions): Likewise.
        * symbol-summary.h: Rename get to get_create.
        (get): Likewise.
        (get_create): Likewise.
        * tree-sra.c (ipa_sra_preliminary_function_checks): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * symbol-summary.h (release): Move definition out of class
        declaration.
        (symtab_removal): Likewise.
        (symtab_duplication): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * symbol-summary.h (function_summary): Move constructor
        implementation out of class declaration.
        (release): Likewise.
        (symtab_insertion): Likewise.
        (symtab_removal): Likewise.
        (symtab_duplication): Likewise.
        (get): Likewise.

2018-06-08  Martin Liska  <mliska@suse.cz>

        * Makefile.in: Remove support for MPX (macros, related functions,
        fields in cgraph_node, ...).
        * builtin-types.def (BT_BND): Likewise.
        (BT_FN_BND_CONST_PTR): Likewise.
        (BT_FN_CONST_PTR_BND): Likewise.
        (BT_FN_VOID_PTR_BND): Likewise.
        (BT_FN_BND_CONST_PTR_SIZE): Likewise.
        (BT_FN_VOID_CONST_PTR_BND_CONST_PTR): Likewise.
        * builtins.c (expand_builtin_memcpy_with_bounds): Likewise.
        (expand_builtin_mempcpy_with_bounds): Likewise.
        (expand_builtin_memset_with_bounds): Likewise.
        (expand_builtin_memset_args): Likewise.
        (std_expand_builtin_va_start): Likewise.
        (expand_builtin): Likewise.
        (expand_builtin_with_bounds): Likewise.
        * builtins.def (DEF_BUILTIN_CHKP): Likewise.
        (DEF_LIB_BUILTIN_CHKP): Likewise.
        (DEF_EXT_LIB_BUILTIN_CHKP): Likewise.
        (DEF_CHKP_BUILTIN): Likewise.
        (BUILT_IN_MEMCPY): Likewise.
        (BUILT_IN_MEMMOVE): Likewise.
        (BUILT_IN_MEMPCPY): Likewise.
        (BUILT_IN_MEMSET): Likewise.
        (BUILT_IN_STPCPY): Likewise.
        (BUILT_IN_STRCAT): Likewise.
        (BUILT_IN_STRCHR): Likewise.
        (BUILT_IN_STRCPY): Likewise.
        (BUILT_IN_STRLEN): Likewise.
        (BUILT_IN_MEMCPY_CHK): Likewise.
        (BUILT_IN_MEMMOVE_CHK): Likewise.
        (BUILT_IN_MEMPCPY_CHK): Likewise.
        (BUILT_IN_MEMSET_CHK): Likewise.
        (BUILT_IN_STPCPY_CHK): Likewise.
        (BUILT_IN_STRCAT_CHK): Likewise.
        (BUILT_IN_STRCPY_CHK): Likewise.
        * calls.c (store_bounds): Likewise.
        (emit_call_1): Likewise.
        (special_function_p): Likewise.
        (maybe_warn_nonstring_arg): Likewise.
        (initialize_argument_information): Likewise.
        (finalize_must_preallocate): Likewise.
        (compute_argument_addresses): Likewise.
        (expand_call): Likewise.
        * cfgexpand.c (expand_call_stmt): Likewise.
        (expand_return): Likewise.
        (expand_gimple_stmt_1): Likewise.
        (pass_expand::execute): Likewise.
        * cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Likewise.
        (cgraph_node::remove): Likewise.
        (cgraph_node::dump): Likewise.
        (cgraph_node::verify_node): Likewise.
        * cgraph.h (chkp_function_instrumented_p): Likewise.
        (symtab_node::get_alias_target): Likewise.
        (cgraph_node::can_remove_if_no_direct_calls_and_refs_p): Likewise.
        (cgraph_local_p): Likewise.
        * cgraphbuild.c (cgraph_edge::rebuild_edges): Likewise.
        (cgraph_edge::rebuild_references): Likewise.
        * cgraphunit.c (varpool_node::finalize_decl): Likewise.
        (walk_polymorphic_call_targets): Likewise.
        (cgraph_node::expand_thunk): Likewise.
        (symbol_table::output_weakrefs): Likewise.
        * common/config/i386/i386-common.c (OPTION_MASK_ISA2_GENERAL_REGS_ONLY_UNSET): Likewise.
        (ix86_handle_option): Likewise.
        * config/i386/constraints.md: Likewise.
        * config/i386/i386-builtin-types.def (BND): Likewise.
        (VOID): Likewise.
        (PVOID): Likewise.
        (ULONG): Likewise.
        * config/i386/i386-builtin.def (BDESC_END): Likewise.
        (BDESC_FIRST): Likewise.
        (BDESC): Likewise.
        * config/i386/i386-c.c (ix86_target_macros_internal): Likewise.
        * config/i386/i386-protos.h (ix86_bnd_prefixed_insn_p): Likewise.
        * config/i386/i386.c (enum reg_class): Likewise.
        (ix86_target_string): Likewise.
        (ix86_option_override_internal): Likewise.
        (ix86_conditional_register_usage): Likewise.
        (ix86_valid_target_attribute_inner_p): Likewise.
        (ix86_set_indirect_branch_type): Likewise.
        (ix86_set_current_function): Likewise.
        (ix86_function_arg_regno_p): Likewise.
        (init_cumulative_args): Likewise.
        (ix86_function_arg_advance): Likewise.
        (ix86_function_arg): Likewise.
        (ix86_pass_by_reference): Likewise.
        (ix86_function_value_regno_p): Likewise.
        (ix86_function_value_1): Likewise.
        (ix86_function_value_bounds): Likewise.
        (ix86_return_in_memory): Likewise.
        (ix86_setup_incoming_vararg_bounds): Likewise.
        (ix86_va_start): Likewise.
        (indirect_thunk_need_prefix): Likewise.
        (print_reg): Likewise.
        (ix86_print_operand): Likewise.
        (ix86_expand_call): Likewise.
        (ix86_output_function_return): Likewise.
        (reg_encoded_number): Likewise.
        (BDESC_VERIFYS): Likewise.
        (ix86_init_mpx_builtins): Likewise.
        (ix86_init_builtins): Likewise.
        (ix86_emit_cmove): Likewise.
        (ix86_emit_move_max): Likewise.
        (ix86_expand_builtin): Likewise.
        (ix86_builtin_mpx_function): Likewise.
        (ix86_get_arg_address_for_bt): Likewise.
        (ix86_load_bounds): Likewise.
        (ix86_store_bounds): Likewise.
        (ix86_load_returned_bounds): Likewise.
        (ix86_store_returned_bounds): Likewise.
        (ix86_class_likely_spilled_p): Likewise.
        (ix86_hard_regno_mode_ok): Likewise.
        (x86_order_regs_for_local_alloc): Likewise.
        (ix86_mitigate_rop): Likewise.
        (ix86_bnd_prefixed_insn_p): Likewise.
        (ix86_mpx_bound_mode): Likewise.
        (ix86_make_bounds_constant): Likewise.
        (ix86_initialize_bounds): Likewise.
        (TARGET_LOAD_BOUNDS_FOR_ARG): Likewise.
        (TARGET_STORE_BOUNDS_FOR_ARG): Likewise.
        (TARGET_LOAD_RETURNED_BOUNDS): Likewise.
        (TARGET_STORE_RETURNED_BOUNDS): Likewise.
        (TARGET_CHKP_BOUND_MODE): Likewise.
        (TARGET_BUILTIN_CHKP_FUNCTION): Likewise.
        (TARGET_CHKP_FUNCTION_VALUE_BOUNDS): Likewise.
        (TARGET_CHKP_MAKE_BOUNDS_CONSTANT): Likewise.
        (TARGET_CHKP_INITIALIZE_BOUNDS): Likewise.
        * config/i386/i386.h (TARGET_MPX): Likewise.
        (TARGET_MPX_P): Likewise.
        (VALID_BND_REG_MODE): Likewise.
        (FIRST_BND_REG): Likewise.
        (LAST_BND_REG): Likewise.
        (enum reg_class): Likewise.
        (BND_REG_P): Likewise.
        (BND_REGNO_P): Likewise.
        (BNDmode): Likewise.
        (ADJUST_INSN_LENGTH): Likewise.
        * config/i386/i386.md: Likewise.
        * config/i386/i386.opt: Likewise.
        * config/i386/linux-common.h (LIBMPX_LIBS): Likewise.
        (defined): Likewise.
        (LINK_MPX): Likewise.
        (MPX_SPEC): Likewise.
        (LIBMPX_SPEC): Likewise.
        (LIBMPXWRAPPERS_SPEC): Likewise.
        (CHKP_SPEC): Likewise.
        * config/i386/predicates.md: Likewise.
        * dbxout.c (dbxout_type): Likewise.
        * doc/extend.texi: Likewise.
        * doc/invoke.texi: Likewise.
        * doc/md.texi: Likewise.
        * doc/tm.texi: Likewise.
        * doc/tm.texi.in: Likewise.
        * dwarf2out.c (is_base_type): Likewise.
        (gen_formal_types_die): Likewise.
        (gen_subprogram_die): Likewise.
        (gen_type_die_with_usage): Likewise.
        (gen_decl_die): Likewise.
        (dwarf2out_late_global_decl): Likewise.
        * expr.c (expand_assignment): Likewise.
        (emit_storent_insn): Likewise.
        (store_expr_with_bounds): Likewise.
        (store_expr): Likewise.
        (expand_expr_real_1): Likewise.
        * expr.h (store_expr_with_bounds): Likewise.
        * function.c (use_register_for_decl): Likewise.
        (struct bounds_parm_data): Likewise.
        (assign_parms_augmented_arg_list): Likewise.
        (assign_parm_find_entry_rtl): Likewise.
        (assign_parm_is_stack_parm): Likewise.
        (assign_parm_load_bounds): Likewise.
        (assign_bounds): Likewise.
        (assign_parms): Likewise.
        (expand_function_start): Likewise.
        * gcc.c (CHKP_SPEC): Likewise.
        * gimple-fold.c (gimple_fold_builtin_memory_op): Likewise.
        * gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Likewise.
        (wrestrict_dom_walker::check_call): Likewise.
        * gimple.c (gimple_build_call_from_tree): Likewise.
        * gimple.h (enum gf_mask): Likewise.
        (gimple_call_with_bounds_p): Likewise.
        (gimple_call_set_with_bounds): Likewise.
        * gimplify.c (gimplify_init_constructor): Likewise.
        * ipa-cp.c (initialize_node_lattices): Likewise.
        (propagate_constants_across_call): Likewise.
        (find_more_scalar_values_for_callers_subset): Likewise.
        * ipa-hsa.c (process_hsa_functions): Likewise.
        * ipa-icf-gimple.c (func_checker::compare_gimple_call): Likewise.
        * ipa-icf.c (sem_function::merge): Likewise.
        * ipa-inline.c (early_inliner): Likewise.
        * ipa-pure-const.c (warn_function_noreturn): Likewise.
        (warn_function_cold): Likewise.
        (propagate_pure_const): Likewise.
        * ipa-ref.h (enum GTY): Likewise.
        * ipa-split.c (find_retbnd): Likewise.
        (consider_split): Likewise.
        (split_function): Likewise.
        * ipa-visibility.c (cgraph_externally_visible_p): Likewise.
        * ipa.c (walk_polymorphic_call_targets): Likewise.
        (symbol_table::remove_unreachable_nodes): Likewise.
        (process_references): Likewise.
        (cgraph_build_static_cdtor_1): Likewise.
        * lto-cgraph.c (lto_output_node): Likewise.
        (output_refs): Likewise.
        (compute_ltrans_boundary): Likewise.
        (input_overwrite_node): Likewise.
        (input_node): Likewise.
        (input_cgraph_1): Likewise.
        * params.def (PARAM_CHKP_MAX_CTOR_SIZE): Likewise.
        * passes.c (pass_manager::execute_early_local_passes): Likewise.
        (class pass_chkp_instrumentation_passes): Likewise.
        (make_pass_chkp_instrumentation_passes): Likewise.
        * passes.def: Likewise.
        * rtl.h (struct GTY): Likewise.
        (CALL_EXPR_WITH_BOUNDS_P): Likewise.
        * stor-layout.c (layout_type): Likewise.
        * symtab.c: Likewise.
        * target.def: Likewise.
        * targhooks.c (default_chkp_bound_type): Likewise.
        (default_chkp_bound_mode): Likewise.
        (default_builtin_chkp_function): Likewise.
        (default_chkp_function_value_bounds): Likewise.
        (default_chkp_make_bounds_constant): Likewise.
        (default_chkp_initialize_bounds): Likewise.
        * targhooks.h (default_chkp_bound_type): Likewise.
        (default_chkp_bound_mode): Likewise.
        (default_builtin_chkp_function): Likewise.
        (default_chkp_function_value_bounds): Likewise.
        (default_chkp_make_bounds_constant): Likewise.
        (default_chkp_initialize_bounds): Likewise.
        * toplev.c (compile_file): Likewise.
        (process_options): Likewise.
        * tree-core.h (DEF_BUILTIN): Likewise.
        (DEF_BUILTIN_CHKP): Likewise.
        * tree-inline.c (declare_return_variable): Likewise.
        (remap_gimple_stmt): Likewise.
        (copy_bb): Likewise.
        (initialize_inlined_parameters): Likewise.
        (expand_call_inline): Likewise.
        * tree-pass.h (make_pass_ipa_chkp_versioning): Likewise.
        (make_pass_ipa_chkp_early_produce_thunks): Likewise.
        (make_pass_ipa_chkp_produce_thunks): Likewise.
        (make_pass_chkp): Likewise.
        (make_pass_chkp_opt): Likewise.
        (make_pass_chkp_instrumentation_passes): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-ssa-ccp.c (insert_clobber_before_stack_restore): Likewise.
        * tree-ssa-dce.c (propagate_necessity): Likewise.
        (eliminate_unnecessary_stmts): Likewise.
        * tree-ssa-pre.c (create_expression_by_pieces): Likewise.
        * tree-ssa-sccvn.c (copy_reference_ops_from_call): Likewise.
        * tree-ssa-sccvn.h: Likewise.
        * tree-ssa-strlen.c (get_string_length): Likewise.
        (valid_builtin_call): Likewise.
        (adjust_last_stmt): Likewise.
        (handle_builtin_strchr): Likewise.
        (handle_builtin_strcpy): Likewise.
        (handle_builtin_stxncpy): Likewise.
        (handle_builtin_memcpy): Likewise.
        (handle_builtin_strcat): Likewise.
        (strlen_check_and_optimize_stmt): Likewise.
        * tree-stdarg.c (expand_ifn_va_arg_1): Likewise.
        * tree-streamer-in.c: Likewise.
        * tree-streamer.c (record_common_node): Likewise.
        * tree.c (tree_code_size): Likewise.
        (wide_int_to_tree_1): Likewise.
        (type_contains_placeholder_1): Likewise.
        (build_common_tree_nodes): Likewise.
        * tree.def (POINTER_BOUNDS_TYPE): Likewise.
        * tree.h (POINTER_BOUNDS_TYPE_P): Likewise.
        (POINTER_BOUNDS_P): Likewise.
        (BOUNDED_TYPE_P): Likewise.
        (BOUNDED_P): Likewise.
        (CALL_WITH_BOUNDS_P): Likewise.
        (pointer_bounds_type_node): Likewise.
        * value-prof.c (gimple_ic): Likewise.
        * var-tracking.c (vt_add_function_parameters): Likewise.
        * varasm.c (make_decl_rtl): Likewise.
        (assemble_start_function): Likewise.
        (output_constant): Likewise.
        (maybe_assemble_visibility): Likewise.
        * varpool.c (ctor_for_folding): Likewise.
        * chkp-builtins.def: Remove.
        * ipa-chkp.c: Remove.
        * ipa-chkp.h: Remove.
        * rtl-chkp.c: Remove.
        * rtl-chkp.h: Remove.
        * tree-chkp-opt.c: Remove.
        * tree-chkp.c: Remove.
        * tree-chkp.h: Remove.

2018-06-07  Carl Love  <cel@us.ibm.com>

        * config/rs6000/vsx.md (vextract_fp_from_shorth,
        vextract_fp_from_shortl): Add BE support.

2018-06-07  Paul Koning  <ni1d@arrl.net>

        * compare-elim.c (try_merge_compare): Don't merge compare if
        address contains a side effect.
        (try_eliminate_compare): Likewise.

2018-06-07  Olga Makhotina  <olga.makhotina@intel.com>

        * config.gcc: Support "tremont".
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect "tremont".
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_TREMONT.
        * config/i386/i386.c (m_TREMONT): Define.
        (processor_target_table): Add "tremont".
        (PTA_TREMONT): Define.
        (ix86_lea_outperforms): Add TARGET_TREMONT.
        (get_builtin_code_for_version): Handle PROCESSOR_TREMONT.
        (fold_builtin_cpu): Add M_INTEL_TREMONT, replace M_INTEL_GOLDMONT
        and M_INTEL_GOLDMONT_PLUS.
        (fold_builtin_cpu): Add "tremont".
        (ix86_add_stmt_cost): Add TARGET_TREMONT.
        (ix86_option_override_internal): Add "tremont".
        * config/i386/i386.h (processor_costs): Define TARGET_TREMONT.
        (processor_type): Add PROCESSOR_TREMONT.
        * config/i386/x86-tune.def: Add m_TREMONT.
        * doc/invoke.texi: Add tremont as x86 -march=/-mtune= CPU type.

2018-06-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        * config/msp430/msp430.c (msp430_mcu_name): Set the "i" in the
        symbol defined for msp430i* devices to be lower case.

2018-06-07  Richard Biener  <rguenther@suse.de>

        * graphite-sese-to-poly.c (extract_affine): Avoid unneded
        wrapping.  Properly wrap the result of a BIT_NOT_EXPR.
        Properly wrap signed arithmetic if overflow wraps.

2018-06-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/69615
        * tree-ssa-reassoc.c (optimize_range_tests_var_bound): If rhs2 is lhs
        of a cast from a same precision integral SSA_NAME in a bb dominated
        by first_bb, retry with rhs2 set to the rhs1 of the cast.  Don't emit
        cast to utype if rhs2 has already a compatible type.

2018-06-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85935
        * graphite-scop-detection.c (find_params_in_bb): Analyze
        condition operands with respect to the correct loop.  Assert
        the analysis doesn't fail.

2018-06-04  Carl Love  <cel@us.ibm.com>

        * config/rs6000/vsx.md (first_match_index_<mode>): Calculate index
        using natural element order.  Use gen_lshrsi3 instead of gen_ashrsi3
        as it is slightly cheaper.
        (first_match_or_eos_index_<mode>):
        Calculate index using natural element order.
        (first_match_index_<mode>):
        Calculate index using natural element order.
        (first_match_or_eos_index_<mode>):
        Calculate index using natural order.
        (define_insn vclzlsbb): Change to define_insn vclzlsbb_<mode>.
        for BE and LE modes.
        * config/rs6000/rs6000-c.c: Rename P9V_BUILTIN_VCLZLSBB,
        P9V_BUILTIN_VCLZLSBB_V16QI.
        * config/rs6000/rs6000-builtin.def: Make VCLZLSBB mode
        specific.

2018-06-06  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC AltiVec Built-in Functions): Adjust
        indentation and line wrap for many prototypes.  Add missing
        @smallexample directives around block of prototypes for vec_xl and
        vec_xst.

2018-06-05  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_passes_ieee128): New boolean to
        track if we pass or return IEEE 128-bit floating point.
        (ieee128_mangling_gcc_8_1): New boolean to say whether to generate
        C++ mangling that is compatible with GCC 8.1.
        (TARGET_ASM_GLOBALIZE_DECL_NAME): Override target hook.
        (init_cumulative_args): Note if we pass or return IEEE 128-bit
        floating point types.
        (rs6000_function_arg_advance_1): Likewise.
        (rs6000_mangle_type): Optionally generate mangled names that match
        what GCC 8.1 generated for IEEE 128-bit floating point types.
        (rs6000_globalize_decl_name): If we have an external function that
        passes or returns IEEE 128-bit types, generate a weak reference
        from the mangled name used in GCC 8.1 to the current mangled
        name.
        (rs6000_init_builtins): Make __ibm128 use the long double type if
        long double is IBM extended double.  Make __float128 use the long
        double type if long double is IEEE 128-bit.

        PR target/85657
        * config/rs6000/rs6000-builtin.def (BU_IBM128_2): New helper
        macro for __ibm128 built-in functions.
        (PACK_IF): Add __ibm128 pack/unpack functions.
        (UNPACK_IF): Likewise.
        * config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Do not
        enable long double built-in functions if long double is IEEE
        128-bit floating point.
        (rs6000_invalid_builtin): Update long double built-in function
        error message.
        (rs6000_expand_builtin): For PACK_IF and UNPACK_IF built-in
        functions, adjust the built-in function to use the long double
        built-in function if __ibm128 and long double are the same type.
        * doc/extend.texi (PowerPC builtins): Update documention for
        __builtin_{,un}pack_longdouble.  Add documentation for
        __builtin_{,un}pack_ibm128.

2018-06-06  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (enum riscv_privilege_levels): New.
        (struct machine_function): New field interrupt_mode.
        (riscv_handle_type_attribute): New function.  Add forward declaration.
        (riscv_attribute_table) <interrupt>: Use riscv_handle_type_attribute.
        (riscv_expand_epilogue): Check interrupt_mode field.
        (riscv_set_current_function): Check interrupt attribute args and
        set interrupt_mode field.
        * config/riscv/riscv.md (UNSPECV_SRET, UNSPECV_URET): New.
        (riscv_sret, riscv_uret): New.
        * doc/extend.texi (RISC-V Function Attributes) <interrupt>: Document
        new arguments to interrupt attribute.

2018-06-06  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/63177
        * /config/rs6000/rs6000.h (ASM_CPU_SPEC): Add support for -mpower9.
        Don't handle -mcpu=power8 if -mpower9-vector is also used.

2018-06-06  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-builtin.def (VSX_BUILTIN_VEC_LD,
        VSX_BUILTIN_VEC_ST): Add comment to explain non-traditional uses.
        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Remove
        several redundant entries.

2018-06-06  David Malcolm  <dmalcolm@redhat.com>

        * config/i386/i386-protos.h (ix86_expand_call): Strengthen return
        type from "rtx" to "rtx_insn *".
        * config/i386/i386.c (ix86_expand_split_stack_prologue): Likewise
        for local "call_insn", removing cast.
        (ix86_expand_call): Likewise, introducing a "call_insn" local.

2018-06-06  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/86066
        * gimple-ssa-store-merging.c (process_store): Do not bypass BIT_NOT_EXPR
        for BIT_INSERT_EXPR stores.

2018-06-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86062
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Handle arbitrary
        component refs ontop
        of to be offsetted base.

2018-06-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        * config/msp430/msp430.c (msp430_attr): Allow interrupt handlers
        to be static and remove check on interrupt attribute name.

2018-06-05  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC AltiVec Built-in Functions): Remove
        volatile qualifier from vec_lvsl and vec_lvsr argument prototypes.

2018-06-05  Steve Ellcey  <sellcey@cavium.com>

        PR target/79924
        * config/aarch64/aarch64-protos.h (aarch64_err_no_fpadvsimd): Remove
        second argument.
        * config/aarch64/aarch64-protos..c (aarch64_err_no_fpadvsimd):
        Remove second argument, change how error is called.
        (aarch64_layout_arg): Remove second argument from
        aarch64_err_no_fpadvsimd call.
        (aarch64_init_cumulative_args): Ditto.
        (aarch64_gimplify_va_arg_expr): Ditto.
        * config/aarch64/aarch64.md (mov<mode>): Ditto.

2018-06-05  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (simple_return_indirect_internal): New expander.
        (*simple_return_indirect_internal<mode>): Rename from
        simple_return_indirect_internal.  Use W mode iterator.
        (rstorssp): New expander.
        (*rstorssp<mode>): Rename from rstorssp.  Use P mode iterator.
        (clrssbsy): New expander.
        (*clrssbsy<mode>): Rename from clrssbsy.  Use P mode iterator.

2018-06-05  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/arm/arm_cmse.h (cmse_nsfptr_create): Change typeof to
        __typeof__.
        (cmse_check_pointed_object): Likewise.

2018-06-05  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/47618
        * doc/invoke.texi: Document how -fprofile-dir format
        is extended.

2018-06-05  Richard Biener  <rguenther@suse.de>

        * tree-cfgcleanup.c (cleanup_control_flow_pre): For edge
        removal pretend DOM info isn't available so we do not update
        it and only remove edges, not dominated blocks.  Actually free
        DOM info in case we removed something.  Remove unreachable blocks.
        (mfb_keep_latches): Work with either DOM info or marked backedges.
        (cleanup_tree_cfg_noloop): Do not remove unreachable blocks
        first.  Mark backedges if DOM info isn't available.
        (Re-)compute DOM info after cleanup_control_flow_pre.

2018-06-05  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (struct locus_discrim_map): Store line, not location.
        (locus_discrim_hasher::hash): Adjust.
        (locus_discrim_hasher::equal): Likewise.
        (next_discriminator_for_locus): Work on line directly.
        (same_line_p): Pass in expanded locus1 as well.
        (assign_discriminators): Avoid redundant location expansions.

2018-06-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86046
        * tree-ssa.c (maybe_optimize_var): Clear DECL_GIMPLE_REG_P
        if required after clearing TREE_ADDRESSABLE.

2018-06-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86047
        * tree-ssa-loop.c (for_each_index): Glob handling of all
        decls and constants and really handle all of them.

2018-06-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/81497
        * config/arm/arm-builtins.c (arm_type_qualifiers): Add
        qualifier_void_pointer and qualifier_const_void_pointer.
        (arm_ldc_qualifiers, arm_stc_qualifiers): Use the above.
        (arm_init_builtins): Handle the above.
        * config/arm/arm_acle.h (__arm_cdp, __arm_ldc, __arm_ldcl, __arm_stc,
        __arm_stcl, __arm_mcr, __arm_cdp2, __arm_ldc2, __arm_ldcl2, __arm_stc2,
        __arm_stcl2,__arm_mcr2, __arm_mcrr, __arm_mcrr2): Remove return for
        void intrinsics.

2018-06-05  Martin Liska  <mliska@suse.cz>

        * auto-profile.c (read_autofdo_file): Do not use
        gcov_ctr_summary struct.
        (afdo_callsite_hot_enough_for_early_inline): Likewise.
        * coverage.c (struct counts_entry): Likewise.
        (read_counts_file): Read just single summary entry.
        (get_coverage_counts): Use gcov_summary struct.
        * coverage.h (get_coverage_counts): Likewise.
        * gcov-dump.c (dump_working_sets): Likewise.
        (tag_summary): Dump just single summary.
        * gcov-io.c (gcov_write_summary): Write just histogram
        summary.
        (gcov_read_summary): Read just single summary.
        (compute_working_sets): Use gcov_summary struct.
        * gcov-io.h (GCOV_TAG_SUMMARY_LENGTH): Remove usage
        of GCOV_COUNTERS_SUMMABLE.
        (GCOV_COUNTERS_SUMMABLE): Remove.
        (GCOV_FIRST_VALUE_COUNTER): Replace with
        GCOV_COUNTER_V_INTERVAL.
        (struct gcov_ctr_summary): Remove.
        (struct gcov_summary): Directly use fields of former
        gcov_ctr_summary.
        (compute_working_sets): Use gcov_summary struct.
        * gcov.c (read_count_file): Do not use ctrs fields.
        * lto-cgraph.c (merge_profile_summaries): Use gcov_summary
        struct.
        * lto-streamer.h (struct GTY): Make profile_info gcov_summary
        struct.
        * profile.c: Likewise.
        * profile.h: Likewise.

2018-06-05  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84846
        * gcov.c (output_lines): Print working directory only
        in intermediate format.

2018-06-05  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-builtin-types.def: Add void function type.
        * config/s390/s390-builtins.def: Use the function type for the
        tbeginc builtin.

2018-06-04  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv-protos.h (riscv_expand_epilogue): Change bool arg
        to int.
        * config/riscv/riscv.c (riscv_for_each_saved_reg): New args epilogue
        and maybe_eh_return.  Change regno to unsigned int.  Use new args to
        handle EH_RETURN_DATA_REGNO registers properly.
        (riscv_expand_prologue): Pass new args to riscv_for_each_saved_reg.
        (riscv_expand_epilogue): Update comment.  Change argument name and
        type.  Update code to use new name and type.  Pass new args to
        riscv_for_each_saved_reg.  Only use EH_RETURN_STACKADJ_RTX when
        EXCEPTION_RETURN.
        * config/riscv/riscv.md (NORMAL_RETURN): New.
        (SIBCALL_RETURN, EXCEPTION_RETURN): New.
        (epilogue, sibcall_epilogue): Update riscv_expand_epilogue arg.
        (eh_return): Call gen_eh_return_internal and emit barrier.
        (eh_return_internal): Call riscv_expand_epilogue.

2018-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-ssa-store-merging.c (struct merged_store_group): Move up
        bit_insertion field and declare can_be_merged_into method.
        (merged_store_group::can_be_merged_into): New method.
        (imm_store_chain_info::coalesce_immediate): Call it to decide whether
        consecutive non-overlapping stores can be merged.  Turn MEM_REF stores
        into BIT_INSERT_EXPR stores if the group contains a non-MEM_REF store.

2018-06-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85955
        * builtins.c (fold_builtin_sincos): Convert pointers to
        destination to appropriate type before dereferencing.

2018-06-04  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (abs<mode>2 for FLOAT128): Handle IFmode.

2018-06-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * expr.c (expand_expr_real_1): Force the operand into memory if
        its TYPE_MODE is BLKmode and if there is no integer mode for
        the number of bits being extracted.

2018-06-04  Jakub Jelinek  <jakub@redhat.com>

        PR target/85832
        PR target/86036
        * config/i386/sse.md (<avx512>_eq<mode>3<mask_scalar_merge_name>_1):
        Use vptestnm rather than vptestm in (=Yc,v,C) variant.

2018-06-04  Richard Biener  <rguenther@suse.de>

        * tree-cfgcleanup.c (cleanup_tree_cfg_1): Fold into...
        (cleanup_tree_cfg_noloop): ... single caller.  Do
        start_recording_case_labels later.

2018-06-04  Sebastian Peryt  <sebastian.peryt@intel.com>

        * config/i386/cldemoteintrin.h: Change define from _X86INTRIN_H_INCLUDED
        to _IMMINTRIN_H_INCLUDED.
        * config/i386/pconfigintrin.h: Ditto.
        * config/i386/waitpkgintrin.h: Ditto.
        * config/i386/immintrin.h: Add includes for sgxintrin.h,
        pconfigintrin.h, waitpkgintrin.h and cldemoteintrin.h.
        * config/i386/x86intrin.h: Remove includes for mintrin.h, xmmintrin.h,
        emmintrin.h, pmmintrin.h, tmmintrin.h, smmintrin.h, wmmintrin.h,
        bmiintrin.h, bmi2intrin.h, lzcntintrin.h, sgxintrin.h, pconfigintrin.h,
        waitpkgintrin.h and cldemoteintrin.h.

2018-06-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86038
        * tracer.c (find_best_successor): Check probability for
        being initialized, bail out if not.

2018-06-04  Richard Earnshaw  <rearnsha@arm.com>

        PR target/86003
        * config/arm/arm-cpus.in (ALL_QUIRKS): Add xscale feature to the list
        of bits to ignore when comparing architectures.

2018-06-04  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/69615
        * fold-const.c (merge_ranges): If range1 is - [x, x] and x is the
        maximum or minimum of the type, try to merge it also as if
        range1 is + [-, x - 1] or + [x + 1, -].

        PR c++/86025
        * tree.c (inchash::add_expr): Handle IDENTIFIER_NODE.

2018-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/86034
        * gimple-ssa-store-merging.c (output_merged_store): Convert the RHS to
        the unsigned bitfield type in a bit insertion sequence if it does not
        have a larger precision than the bitfield size.
        (process_store): Also bypass widening conversions for BIT_INSERT_EXPR.

2018-06-03  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-peephole2.md: Add new patterns for code size.

2018-06-03  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-opts.h (nds32_arch_type): Add ARCH_V3J.
        * config/nds32/nds32.c (nds32_option_override): Consider ARCH_V3J.
        * config/nds32/nds32.h (TARGET_ISA_V3): Add ARCH_V3J checking.
        * config/nds32/nds32.opt (march): Add enum value Value(ARCH_V3J).

2018-06-03  Chung-Ju Wu  <jasonwucj@gmail.com>

        * common/config/nds32/nds32-common.c (nds32_option_optimization_table):
        Disable -fdelete-null-pointer-checks for ELF toolchain.

2018-06-02  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config.gcc (nds32*): Use nds32-linux.opt and nds32-elf.opt.
        (nds32le-*-*, nds32be-*-*): Integrate checking process.
        (nds32*-*-*): Add glibc and uclibc conditions.
        * common/config/nds32/nds32-common.c (nds32_except_unwind_info): New.
        (TARGET_EXCEPT_UNWIND_INFO): Define.
        * config/nds32/elf.h: New file.
        * config/nds32/linux.h: New file.
        * config/nds32/nds32-elf.opt: New file.
        * config/nds32/nds32-linux.opt: New file.
        * config/nds32/nds32-fp-as-gp.c
        (pass_nds32_fp_as_gp::gate): Consider TARGET_LINUX_ABI.
        * config/nds32/nds32.c (nds32_conditional_register_usage): Consider
        TARGET_LINUX_ABI.
        (nds32_asm_file_end): Ditto.
        (nds32_print_operand): Ditto.
        (nds32_insert_attributes): Ditto.
        (nds32_init_libfuncs): New function.
        (TARGET_HAVE_TLS): Define.
        (TARGET_INIT_LIBFUNCS): Define.
        * config/nds32/nds32.h (TARGET_DEFAULT_RELAX): Apply different relax
        spec content.
        (TARGET_ELF): Apply different mcmodel setting.
        (LINK_SPEC, LIB_SPEC, STARTFILE_SPEC, ENDFILE_SPEC): The content has
        been migrated into elf.h and linux.h files.
        * config/nds32/nds32.md (add_pc): Consider TARGET_LINUX_ABI.
        * config/nds32/nds32.opt (mvh): Consider TARGET_LINUX_ABI.
        (mcmodel): The content has been migrated into nds32-elf.opt and
        nds32-linux.opt files.
        * config/nds32/t-elf: New file.
        * config/nds32/t-linux: New file.

2018-06-02  Chung-Ju Wu  <jasonwucj@gmail.com>
            Shiva Chen  <shiva0217@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_OMIT_FP_BEGIN and UNSPEC_VOLATILE_OMIT_FP_END.
        * config/nds32/nds32-fp-as-gp.c: New implementation of fp_as_gp
        optimization.
        * config/nds32/nds32-protos.h (nds32_naked_function_p): Declare.
        (make_pass_nds32_fp_as_gp): Declare.
        * config/nds32/nds32.c (nds32_register_passes): Add fp_as_gp as one
        optmization pass.
        (nds32_asm_function_end_prologue): Remove unused asm output.
        (nds32_asm_function_begin_epilogue): Remove unused asm output.
        (nds32_asm_file_start): Output necessary fp_as_gp information.
        (nds32_option_override): Adjust register usage.
        (nds32_expand_prologue): Consider fp_as_gp situation.
        (nds32_expand_prologue_v3push): Consider fp_as_gp situation.
        * config/nds32/nds32.md (prologue): Check fp_as_gp_p and naked_p.
        (epilogue): Ditto.
        (return): Ditto.
        (simple_return): Ditto.
        (omit_fp_begin): Output special directive for fp_as_gp.
        (omit_fp_end): Output special directive for fp_as_gp.
        * config/nds32/nds32.opt (mfp-as-gp, mno-fp-as-gp, mforce-fp-as-gp,
        mforbid-fp-as-gp): New options.

2018-06-01  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (dwarf2out_finish): Remove generation of
        DW_AT_loclists_base.

2018-06-01  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-ssa-store-merging.c: Include gimple-fold.h.
        (struct store_immediate_info): Document BIT_INSERT_EXPR stores.
        (struct merged_store_group): Add bit_insertion field.
        (dump_char_array): Use standard hexadecimal format.
        (merged_store_group::merged_store_group): Set bit_insertion to false.
        (merged_store_group::apply_stores): Use optimal buffer size.  Deal
        with BIT_INSERT_EXPR stores.  Move up code updating the mask and
        also print the mask in the dump file.
        (pass_store_merging::gate): Minor tweak.
        (imm_store_chain_info::coalesce_immediate): Fix wrong association
        of stores with groups in dump.  Allow coalescing of BIT_INSERT_EXPR
        stores with INTEGER_CST stores.
        (count_multiple_uses) <BIT_INSERT_EXPR>: New case.
        (imm_store_chain_info::output_merged_store): Add try_bitpos variable
        and use it throughout.  Generate bit insertion sequences if need be.
        (pass_store_merging::process_store): Remove redundant condition.
        Record stores from a SSA name to a bit-field with BIT_INSERT_EXPR.

2018-06-01  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_mangle_type): Change the mangling of
        the 128-bit floating point types.  Fix function comment.

2018-06-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md
        (aarch64_simd_vec_unpack<su>_lo_<mode>): Use UXTL and SXTL assembler
        mnemonics.
        (aarch64_simd_vec_unpack<su>_hi_<mode>): Use UXTL2 and SXTL2 assembler
        mnemonics.

2018-06-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85989
        * gimple-ssa-backprop.c (backprop::m_visited_phis): New member
        variable.
        (backprop::intersect_uses): Check it when deciding whether this
        is a backedge reference.
        (backprop::process_block): Add each phi to m_visited_phis
        after visiting it, then clear it at the end.

2018-06-01  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (vect_dr_stmt): New function.
        (vect_get_load_cost): Adjust.
        (vect_get_store_cost): Likewise.
        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence):
        Use vect_dr_stmt instead of DR_SMTT.
        (vect_record_base_alignments): Likewise.
        (vect_calculate_target_alignment): Likewise.
        (vect_compute_data_ref_alignment): Likewise and make static.
        (vect_update_misalignment_for_peel): Likewise.
        (vect_verify_datarefs_alignment): Likewise.
        (vector_alignment_reachable_p): Likewise.
        (vect_get_data_access_cost): Likewise.  Pass down
        vinfo to vect_get_load_cost/vect_get_store_cost instead of DR.
        (vect_get_peeling_costs_all_drs): Likewise.
        (vect_peeling_hash_get_lowest_cost): Likewise.
        (vect_enhance_data_refs_alignment): Likewise.
        (vect_find_same_alignment_drs): Likewise.
        (vect_analyze_data_refs_alignment): Likewise.
        (vect_analyze_group_access_1): Likewise.
        (vect_analyze_group_access): Likewise.
        (vect_analyze_data_ref_access): Likewise.
        (vect_analyze_data_ref_accesses): Likewise.
        (vect_vfa_segment_size): Likewise.
        (vect_small_gap_p): Likewise.
        (vectorizable_with_step_bound_p): Likewise.
        (vect_prune_runtime_alias_test_list): Likewise.
        (vect_analyze_data_refs): Likewise.
        (vect_supportable_dr_alignment): Likewise.
        * tree-vect-loop-manip.c (get_misalign_in_elems): Likewise.
        (vect_gen_prolog_loop_niters): Likewise.
        * tree-vect-loop.c (vect_analyze_loop_2): Likewise.
        * tree-vect-patterns.c (vect_recog_bool_pattern): Do not
        modify DR_STMT.
        (vect_recog_mask_conversion_pattern): Likewise.
        (vect_try_gather_scatter_pattern): Likewise.
        * tree-vect-stmts.c (vect_model_store_cost): Pass stmt_info
        to vect_get_store_cost.
        (vect_get_store_cost): Get stmt_info instead of DR.
        (vect_model_load_cost): Pass stmt_info to vect_get_load_cost.
        (vect_get_load_cost): Get stmt_info instead of DR.

2018-06-01  Richard Biener  <rguenther@suse.de>

        PR middle-end/86017
        * gimple-fold.c (var_decl_component_p): Also allow offsetted
        vars wrapped in MEM_REFs.

2018-06-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_ira_change_pseudo_allocno_class):
        Fix subreg tests so that we only return a choice between
        GENERAL_REGS and FP_REGS if the original classes included both.

2018-06-01  Richard Biener  <rguenther@suse.de>

        PR ipa/85960
        * tree-ssa-structalias.c (get_function_part_constraint):
        Handle NULL fi->decl.
        (find_func_aliases_for_call): Properly handle indirect
        fi from direct call.
        (find_func_clobbers): Likewise.
        (ipa_pta_execute): Likewise.
        (create_variable_info_for): For functions that are ifunc_resolver
        resolve to a varinfo that contains the result of the resolver call.
        (associate_varinfo_to_alias): Do not treat ifunc resolvers as
        aliases.

2018-05-31  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64.md:
        (*fix_to_zero_extenddfdi2): New pattern.
        * gcc.target/aarch64/fix_extend1.c: New testcase.

2018-05-31  Qing Zhao <qing.zhao@oracle.com>

        PR middle-end/78809
        PR middle-end/83026
        * builtins.c (expand_builtin): Add the handling of BUILT_IN_STRCMP_EQ
        and BUILT_IN_STRNCMP_EQ.
        * builtins.def: Add new builtins BUILT_IN_STRCMP_EQ and
        BUILT_IN_STRNCMP_EQ.
        * gimple-fold.c (gimple_fold_builtin_string_compare): Add the
        handling of BUILTIN_IN_STRCMP_EQ and BUILT_IN_STRNCMP_EQ.
        (gimple_fold_builtin): Likewise.
        * tree-ssa-strlen.c (compute_string_length): New function.
        (determine_min_obsize): New function.
        (handle_builtin_string_cmp): New function to handle calls to
        string compare functions.
        (strlen_optimize_stmt): Add handling to builtin string compare
        calls.
        * tree-ssa-structalias.c (find_func_aliases_for_builtin_call):
        Add the handling of BUILT_IN_STRCMP_EQ and BUILT_IN_STRNCMP_EQ.
        * tree.c (build_common_builtin_nodes): Add new defines of
        BUILT_IN_STRNCMP_EQ and BUILT_IN_STRCMP_EQ.

2018-05-31  Jakub Jelinek  <jakub@redhat.com>

        PR target/85984
        * bb-reorder.c (pass_partition_blocks::gate): Return false for
        functions with naked attribute.

2018-05-31  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/sse.md (avx_vec_concat<mode>):
        Substitute concat_tg_mode mode attribute with xtg_mode.
        (<mask_codefor>avx512dq_broadcast<mode><mask_name>_1): Ditto.
        (concat_tg_mode): Remove mode attribute.

2018-05-31  Martin Sebor  <msebor@redhat.com>

        PR c/82063
        * calls.c (alloc_max_size): Correct a logic error/typo.
        Treat excessive arguments as infinite.  Warn for invalid arguments.
        * doc/invoke.texi (-Walloc-size-larger-than): Update.

2018-05-31  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85829
        * config/i386/x86-tune.def: Re-enable partial_reg_dependency
        and movx for Haswell.

2018-05-31  Chung-Lin Tang  <cltang@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        PR middle-end/85879
        * gimplify.c (gimplify_adjust_omp_clauses): Add 'remove = true'
        when emitting error on private/firstprivate reductions.
        * omp-low.c (lower_omp_target): Avoid reference-type processing
        on pointers for firstprivate clause.

2018-05-31  Sameera Deshpande <sameera.deshpande@linaro.org>

        * config/aarch64/aarch64-simd-builtins.def (ld1x3): New.
        (st1x2): Likewise.
        (st1x3): Likewise.
        * config/aarch64/aarch64-simd.md
        (aarch64_ld1x3<VALLDIF:mode>): New pattern.
        (aarch64_ld1_x3_<mode>): Likewise
        (aarch64_st1x2<VALLDIF:mode>): Likewise
        (aarch64_st1_x2_<mode>): Likewise
        (aarch64_st1x3<VALLDIF:mode>): Likewise
        (aarch64_st1_x3_<mode>): Likewise
        * config/aarch64/arm_neon.h (vld1_u8_x3): New function.
        (vld1_s8_x3): Likewise.
        (vld1_u16_x3): Likewise.
        (vld1_s16_x3): Likewise.
        (vld1_u32_x3): Likewise.
        (vld1_s32_x3): Likewise.
        (vld1_u64_x3): Likewise.
        (vld1_s64_x3): Likewise.
        (vld1_f16_x3): Likewise.
        (vld1_f32_x3): Likewise.
        (vld1_f64_x3): Likewise.
        (vld1_p8_x3): Likewise.
        (vld1_p16_x3): Likewise.
        (vld1_p64_x3): Likewise.
        (vld1q_u8_x3): Likewise.
        (vld1q_s8_x3): Likewise.
        (vld1q_u16_x3): Likewise.
        (vld1q_s16_x3): Likewise.
        (vld1q_u32_x3): Likewise.
        (vld1q_s32_x3): Likewise.
        (vld1q_u64_x3): Likewise.
        (vld1q_s64_x3): Likewise.
        (vld1q_f16_x3): Likewise.
        (vld1q_f32_x3): Likewise.
        (vld1q_f64_x3): Likewise.
        (vld1q_p8_x3): Likewise.
        (vld1q_p16_x3): Likewise.
        (vld1q_p64_x3): Likewise.
        (vst1_s64_x2): Likewise.
        (vst1_u64_x2): Likewise.
        (vst1_f64_x2): Likewise.
        (vst1_s8_x2): Likewise.
        (vst1_p8_x2): Likewise.
        (vst1_s16_x2): Likewise.
        (vst1_p16_x2): Likewise.
        (vst1_s32_x2): Likewise.
        (vst1_u8_x2): Likewise.
        (vst1_u16_x2): Likewise.
        (vst1_u32_x2): Likewise.
        (vst1_f16_x2): Likewise.
        (vst1_f32_x2): Likewise.
        (vst1_p64_x2): Likewise.
        (vst1q_s8_x2): Likewise.
        (vst1q_p8_x2): Likewise.
        (vst1q_s16_x2): Likewise.
        (vst1q_p16_x2): Likewise.
        (vst1q_s32_x2): Likewise.
        (vst1q_s64_x2): Likewise.
        (vst1q_u8_x2): Likewise.
        (vst1q_u16_x2): Likewise.
        (vst1q_u32_x2): Likewise.
        (vst1q_u64_x2): Likewise.
        (vst1q_f16_x2): Likewise.
        (vst1q_f32_x2): Likewise.
        (vst1q_f64_x2): Likewise.
        (vst1q_p64_x2): Likewise.
        (vst1_s64_x3): Likewise.
        (vst1_u64_x3): Likewise.
        (vst1_f64_x3): Likewise.
        (vst1_s8_x3): Likewise.
        (vst1_p8_x3): Likewise.
        (vst1_s16_x3): Likewise.
        (vst1_p16_x3): Likewise.
        (vst1_s32_x3): Likewise.
        (vst1_u8_x3): Likewise.
        (vst1_u16_x3): Likewise.
        (vst1_u32_x3): Likewise.
        (vst1_f16_x3): Likewise.
        (vst1_f32_x3): Likewise.
        (vst1_p64_x3): Likewise.
        (vst1q_s8_x3): Likewise.
        (vst1q_p8_x3): Likewise.
        (vst1q_s16_x3): Likewise.
        (vst1q_p16_x3): Likewise.
        (vst1q_s32_x3): Likewise.
        (vst1q_s64_x3): Likewise.
        (vst1q_u8_x3): Likewise.
        (vst1q_u16_x3): Likewise.
        (vst1q_u32_x3): Likewise.
        (vst1q_u64_x3): Likewise.
        (vst1q_f16_x3): Likewise.
        (vst1q_f32_x3): Likewise.
        (vst1q_f64_x3): Likewise.
        (vst1q_p64_x3): Likewise.

2018-05-30  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        * config/msp430/msp430.c (msp430_output_labelref): Prepend
        user_label_prefix to name.

        * tree-core.h: Update comment about the format of NAME string
        passed to handler in attribute_spec.

        * config/msp430/msp430.md: Remove erroneous subreg expression from
        zero_extendqisi2 insn pattern. Remove msp430x ISA restriction on
        zero_extend{q,h}isi2.

2018-05-30  Borislav Petkov  <bp@suse.de>

        * doc/extend.texi: Document some architecture specific
        constraints and sort entries.

2018-05-30  Martin Sebor  <msebor@redhat.com>

        PR middle-end/85369
        * builtins.c (expand_builtin_stpcpy_1): New function.
        (expand_builtin_stpcpy): Call it, and call maybe_warn_nonstring_arg
        only if the former succeeds.

2018-05-31  Sameera Deshpande <sameera.deshpande@linaro.org>

        * config/aarch64/aarch64-cores.def (saphira) : Add support for ARMv8.4
        in saphira.

2018-05-30  Jan Hubicka  <hubicka@ucw.cz>

        * doc/invoke.texi (-flinker-output): Document

2018-05-30  Jan Hubicka  <hubicka@ucw.cz>

        * passes.c (ipa_write_summaries): Only modify statements if body
        is in memory.
        * cgraphunit.c (ipa_passes): Also produce intermeidate code when
        incrementally linking.
        (ipa_passes): Likewise.
        * lto-cgraph.c (lto_output_node): When incrementally linking do not
        pass down resolution info.
        * common.opt (flag_incremental_link): Update info.
        * gcc.c (plugin specs): Turn flinker-output=* to
        -plugin-opt=-linker-output-known
        * toplev.c (compile_file): Also cut compilation when doing incremental
        link.
        * flag-types. (enum lto_partition_model): Add
        LTO_LINKER_OUTPUT_NOLTOREL.
        (invoke.texi): Add -flinker-output docs.
        * ipa.c (symbol_table::remove_unreachable_nodes): Handle LTO incremental
        link same way as WPA; do not stream in dead initializers.

        * dwarf2out.c (dwarf2out_die_ref_for_decl,
        darf2out_register_external_decl): Support incremental link.

2018-05-30  Jan Hubicka  <hubicka@ucw.cz>

        * lto-opts.c (lto_write_options): Skip OPT_dumpdir, OPT_fresolution_.

2018-05-30  Jan Hubicka  <hubicka@ucw.cz>

        * lto-wrapper.c (debug_objcopy): Add rename parameter; pass
        it down to simple_object_copy_lto_debug_sections.
        (run_gcc): Determine incremental LTO link time and configure
        lto1 into non-wpa mode, disable renaming of debug sections.

2018-05-30  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC AltiVec Built-in Functions): Remove
        descriptions of various incorrectly documented functions.

2018-05-30  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        Revert:
        * config/aarch64/predicates.md (aarch64_mem_pair_lanes_operand): Make
        address check not strict.

2018-05-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85964
        * tracer.c (better_p): Drop initialized count check, we only
        call the function with initialized counts now.
        (find_best_successor): Do find a best edge if one
        has uninitialized count.
        (find_best_predecessor): Likewise.  Do BB frequency check only
        if count is initialized.

2017-05-30  Jackson Woodruff  <jackson.woodruff@arm.com>

        * config/aarch64/aarch64.c (aarch64_host_wide_int_compare): New.
        (aarch64_ldrstr_offset_compare): New.
        (aarch64_operands_adjust_ok_for_ldpstp): Update to consider all
        load/store orderings.
        (aarch64_gen_adjusted_ldpstp): Likewise.

2018-05-30  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.c (aarch64_ira_change_pseudo_allocno_class):
        Check for subset of GENERAL_REGS and FP_REGS.
        * config/aarch64/aarch64-simd.md (aarch64_get_lane): Increase cost of
        r=w alternative.

2018-05-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * alias.c (adjust_offset_for_component_ref): Use poly_int_tree_p
        and wi::to_poly_offset.  Add the current offset and then check
        whether the sum fits, rather than using an unchecked addition of
        a checked term.  Check for a shwi rather than a uhwi.
        * expr.c (get_bit_range): Use tree_to_poly_uint64.
        (store_constructor): Use poly_int_tree_p.
        (expand_expr_real_1): Likewise.
        * function.c (assign_temp): Likewise.
        * fold-const.c (const_binop): Use poly_int_tree_p and
        wi::to_poly_offset.
        (fold_indirect_ref_1): Likewise.  Use multiple_p to attempt an exact
        division.
        * ipa-icf-gimple.c (func_checker::compare_operand): Use
        to_poly_offset for MEM offsets.
        * ipa-icf.c (sem_variable::equals): Likewise.
        * stor-layout.c (compute_record_mode): Use poly_int_tree_p.
        * tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Use
        wi::to_poly_offset for BIT_FIELD_REF offsets.
        (vn_reference_maybe_forwprop_address): Use poly_int_tree_p and
        wi::to_poly_offset.
        * var-tracking.c (emit_note_insn_var_location): Use
        tree_to_poly_uint64.

2018-05-29  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (riscv_interrupt_type): Fix comment typo.

2018-05-29  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85950
        * config/i386/i386.md (l<rounding_insn><MODEF:mode><SWI48:mode>2):
        Enable for TARGET_SSE4_1 and generate rounds{s,d} and cvtts{s,d}2si{,q}
        sequence.
        (sse4_1_round<mode>2): Use nonimmediate_operand
        for operand 1 predicate.

2018-05-29  Martin Sebor  <msebor@redhat.com>
            Richard Biener  <rguenther@suse.de>

        PR testsuite/85888
        * calls.c (get_size_range): Call determine_value_range instead
        of get_value_range..
        * tree-vrp.h (determine_value_range): Declared new function.
        * tree-vrp.c (determine_value_range_1, determine_value_range): New.

2018-05-29  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_preserves_scalar_order_p): Make
        sure to use non-pattern stmts for get_earlier_stmt arguments.
        * tree-vectorizer.h (get_earlier_stmt): Assert we do not get
        called on pattern stmts.
        (get_later_stmt): Likewise.

2018-05-29  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/85759
        * doc/gcov.texi: Document GCOV_ERROR_FILE and GCOV_EXIT_AT_ERROR
        env variables.

2018-05-29  Jakub Jelinek  <jakub@redhat.com>

        * tree-cfg.c (verify_gimple_assign_unary): Add checking for
        VEC_UNPACK_*_EXPR.
        (verify_gimple_assign_binary): Check TYPE_VECTOR_SUBPARTS for
        VEC_PACK_*_EXPR.

        PR target/85918
        * tree.def (VEC_UNPACK_FIX_TRUNC_HI_EXPR, VEC_UNPACK_FIX_TRUNC_LO_EXPR,
        VEC_PACK_FLOAT_EXPR): New tree codes.
        * tree-pretty-print.c (op_code_prio): Handle
        VEC_UNPACK_FIX_TRUNC_HI_EXPR and VEC_UNPACK_FIX_TRUNC_LO_EXPR.
        (dump_generic_node): Handle VEC_UNPACK_FIX_TRUNC_HI_EXPR,
        VEC_UNPACK_FIX_TRUNC_LO_EXPR and VEC_PACK_FLOAT_EXPR.
        * tree-inline.c (estimate_operator_cost): Likewise.
        * gimple-pretty-print.c (dump_binary_rhs): Handle VEC_PACK_FLOAT_EXPR.
        * fold-const.c (const_binop): Likewise.
        (const_unop): Handle VEC_UNPACK_FIX_TRUNC_HI_EXPR and
        VEC_UNPACK_FIX_TRUNC_LO_EXPR.
        * tree-cfg.c (verify_gimple_assign_unary): Likewise.
        (verify_gimple_assign_binary): Handle VEC_PACK_FLOAT_EXPR.
        * cfgexpand.c (expand_debug_expr): Handle VEC_UNPACK_FIX_TRUNC_HI_EXPR,
        VEC_UNPACK_FIX_TRUNC_LO_EXPR and VEC_PACK_FLOAT_EXPR.
        * expr.c (expand_expr_real_2): Likewise.
        * optabs.def (vec_packs_float_optab, vec_packu_float_optab,
        vec_unpack_sfix_trunc_hi_optab, vec_unpack_sfix_trunc_lo_optab,
        vec_unpack_ufix_trunc_hi_optab, vec_unpack_ufix_trunc_lo_optab): New
        optabs.
        * optabs.c (expand_widen_pattern_expr): For
        VEC_UNPACK_FIX_TRUNC_HI_EXPR and VEC_UNPACK_FIX_TRUNC_LO_EXPR use
        sign from result type rather than operand's type.
        (expand_binop_directly): For vec_packu_float_optab and
        vec_packs_float_optab allow result type to be different from operand's
        type.
        * optabs-tree.c (optab_for_tree_code): Handle
        VEC_UNPACK_FIX_TRUNC_HI_EXPR, VEC_UNPACK_FIX_TRUNC_LO_EXPR and
        VEC_PACK_FLOAT_EXPR.  Formatting fixes.
        * tree-vect-generic.c (expand_vector_operations_1):  Handle
        VEC_UNPACK_FIX_TRUNC_HI_EXPR, VEC_UNPACK_FIX_TRUNC_LO_EXPR and
        VEC_PACK_FLOAT_EXPR.
        * tree-vect-stmts.c (supportable_widening_operation): Handle
        FIX_TRUNC_EXPR.
        (supportable_narrowing_operation): Handle FLOAT_EXPR.
        * config/i386/i386.md (fixprefix, floatprefix): New code attributes.
        * config/i386/sse.md (*float<floatunssuffix>v2div2sf2): Rename to ...
        (float<floatunssuffix>v2div2sf2): ... this.  Formatting fix.
        (vpckfloat_concat_mode, vpckfloat_temp_mode, vpckfloat_op_mode): New
        mode attributes.
        (vec_pack<floatprefix>_float_<mode>): New expander.
        (vunpckfixt_mode, vunpckfixt_model, vunpckfixt_extract_mode): New mode
        attributes.
        (vec_unpack_<fixprefix>fix_trunc_lo_<mode>,
        vec_unpack_<fixprefix>fix_trunc_hi_<mode>): New expanders.
        * doc/md.texi (vec_packs_float_@var{m}, vec_packu_float_@var{m},
        vec_unpack_sfix_trunc_hi_@var{m}, vec_unpack_sfix_trunc_lo_@var{m},
        vec_unpack_ufix_trunc_hi_@var{m}, vec_unpack_ufix_trunc_lo_@var{m}):
        Document.
        * doc/generic.texi (VEC_UNPACK_FLOAT_HI_EXPR,
        VEC_UNPACK_FLOAT_LO_EXPR): Fix pasto in description.
        (VEC_UNPACK_FIX_TRUNC_HI_EXPR, VEC_UNPACK_FIX_TRUNC_LO_EXPR,
        VEC_PACK_FLOAT_EXPR): Document.

2018-05-29  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (struct vec_info): Add stmt_vec_infos
        member.
        (stmt_vec_info_vec): Make pointer.
        (init_stmt_vec_info_vec): Remove.
        (free_stmt_vec_info_vec): Likewise.
        (set_stmt_vec_info_vec): New function.
        (free_stmt_vec_infos): Likewise.
        (vinfo_for_stmt): Adjust for stmt_vec_info_vec indirection.
        (set_vinfo_for_stmt): Likewise.
        (get_earlier_stmt): Likewise.
        (get_later_stmt): Likewise.
        * tree-vectorizer.c (stmt_vec_info_vec): Make pointer.
        (vec_info::vec_info): Allocate stmt_vec_infos and set the global.
        (vec_info::~vec_info): Free stmt_vec_infos.
        (vectorize_loops): Set the global stmt_vec_info_vec to NULL.
        Remove old init_stmt_vec_info_vec/free_stmt_vec_info_vec calls.
        (pass_slp_vectorize::execute): Likewise.
        * tree-vect-stmts.c (init_stmt_vec_info_vec): Remove.
        (free_stmt_vec_info_vec): Likewise.
        (set_stmt_vec_info_vec): New function.
        (free_stmt_vec_infos): Likewise.
        * tree-vect-loop.c (_loop_vec_info::~_loop_vec_info): Set
        the global stmt_vec_info_vec.
        * tree-parloops.c (gather_scalar_reductions): Use
        set_stmt_vec_info_vec/free_stmt_vec_infos and maintain a local
        vector.

2018-05-29  Richard Biener  <rguenther@suse.de>

        * dominance.c (iterate_fix_dominators): Push/pop TV_DOMINANCE.

2018-05-29  Martin Liska  <mliska@suse.cz>
            David Malcolm  <dmalcolm@redhat.com>

        * vec.c (test_reverse): New.
        (vec_c_tests): Add new test.
        * vec.h (vl_ptr>::reverse): New function.

2018-05-29  Gerald Pfeifer  <gerald@pfeifer.com>

        * config.gcc: Identify FreeBSD 3.x and 4.x as unsupported.

        * config/freebsd-spec.h (FBSD_LIB_SPEC): Only consider FreeBSD 5
        and later.

2018-05-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * tree-dump.c (dump_node): Use splay_tree_delete_pointers.

2018-05-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85933
        * tree-vect-data-refs.c (vect_record_base_alignments): Only
        look at stmts marked as vectorizable.

2018-05-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85934
        * tree-vect-generic.c (expand_vector_operations_1): Hoist
        vector boolean check before scalar optimization.

2018-05-28  Jakub Jelinek  <jakub@redhat.com>

        * doc/invoke.texi (ARM Options): Use @item instead of @itemx
        for armv5te.

2018-05-28  Mark Wielaard  <mark@klomp.org>

        * dwarf2asm.c (dw2_asm_output_delta_uleb128): Add brackets around lab2
        if it is an expression containing a minus sign.

2018-05-27  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa-linux.h (NEED_INDICATE_EXEC_STACK): Define to 0.

2018-05-27  Paul Koning  <ni1d@arrl.net>

        * config/pdp11/pdp11.md (truncsihi2): Remove.

2018-05-27  Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-intrinsic.md (unaligned_storedi): Modify patterns
        implementation.
        (unaligned_store_dw): Ditto.
        * config/nds32/nds32-memory-manipulation.c
        (nds32_expand_movmemsi_loop_known_size): Refactoring implementation.
        (nds32_gen_dup_4_byte_to_word_value): Rename to ...
        (nds32_gen_dup_4_byte_to_word_value_aux): ... this.
        (emit_setmem_word_loop): Rename to ...
        (emit_setmem_doubleword_loop): ... this.
        (nds32_gen_dup_4_byte_to_word_value): New function.
        (nds32_gen_dup_8_byte_to_double_word_value): New function.
        (nds32_expand_setmem_loop): Refine implementation.
        (nds32_expand_setmem_loop_v3m): Ditto.
        * config/nds32/nds32-multiple.md (unaligned_store_update_base_dw): New
        pattern.

2018-05-27  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (bswapsi2, bswaphi2): New patterns.

2018-05-27  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_attribute_table): Add "no_prologue".
        (nds32_init_machine_status): Initialize machine->attr_naked_p and
        machine->attr_no_prologue_p.
        (nds32_compute_stack_frame): Check "naked" and "no_prologue" attributes.
        (nds32_naked_function_p): Handle "naked" and "no_prologue" attributes.
        (nds32_expand_epilogue): Consider attr_naked_p.
        (nds32_expand_epilogue_v3pop): Likewise.
        (nds32_can_use_return_insn): Likewise.
        * config/nds32/nds32.h (machine_function): Add attr_naked_p and
        attr_no_prologue_p fields.
        * config/nds32/nds32.opt (mret-in-naked-func): New option.

2018-05-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/85918
        * config/i386/i386.md (fixunssuffix, floatunssuffix): New code
        attributes.
        * config/i386/sse.md
        (<floatsuffix>float<sseintvecmodelower><mode>2<mask_name><round_name>):
        Rename to ...
        (float<floatunssuffix><sseintvecmodelower><mode>2<mask_name><round_name>):
        ... this.
        (<floatsuffix>float<sselongvecmodelower><mode>2<mask_name><round_name>):
        Rename to ...
        (float<floatunssuffix><sselongvecmodelower><mode>2<mask_name><round_name>):
        ... this.
        (*<floatsuffix>floatv2div2sf2): Rename to ...
        (*float<floatunssuffix>v2div2sf2): ... this.
        (<floatsuffix>floatv2div2sf2_mask): Rename to ...
        (float<floatunssuffix>v2div2sf2_mask): ... this.
        (*<floatsuffix>floatv2div2sf2_mask_1): Rename to ...
        (*float<floatunssuffix>v2div2sf2_mask_1): ... this.
        (<fixsuffix>fix_truncv8dfv8si2<mask_name><round_saeonly_name>): Rename
        to ...
        (fix<fixunssuffix>_truncv8dfv8si2<mask_name><round_saeonly_name>):
        ... this.
        (<fixsuffix>fix_trunc<mode><sseintvecmodelower>2<mask_name><round_saeonly_name>):
        Rename to ...
        (fix<fixunssuffix>_trunc<mode><sseintvecmodelower>2<mask_name><round_saeonly_name>):
        ... this.
        (<fixsuffix>fix_trunc<mode><sselongvecmodelower>2<mask_name><round_saeonly_name>):
        Rename to ...
        (fix<fixunssuffix>_trunc<mode><sselongvecmodelower>2<mask_name><round_saeonly_name>):
        ... this.
        (<fixsuffix>fix_truncv2sfv2di2<mask_name>): Rename to ...
        (fix<fixunssuffix>_truncv2sfv2di2<mask_name>): ... this.
        (vec_pack_ufix_trunc_<mode>): Use gen_fixuns_truncv8dfv8si2 instead of
        gen_ufix_truncv8dfv8si2.
        * config/i386/i386-builtin.def (__builtin_ia32_cvttpd2uqq256_mask,
        __builtin_ia32_cvttpd2uqq128_mask, __builtin_ia32_cvttps2uqq256_mask,
        __builtin_ia32_cvttps2uqq128_mask, __builtin_ia32_cvtuqq2ps256_mask,
        __builtin_ia32_cvtuqq2ps128_mask, __builtin_ia32_cvtuqq2pd256_mask,
        __builtin_ia32_cvtuqq2pd128_mask, __builtin_ia32_cvttpd2udq512_mask,
        __builtin_ia32_cvtuqq2ps512_mask, __builtin_ia32_cvtuqq2pd512_mask,
        __builtin_ia32_cvttps2uqq512_mask, __builtin_ia32_cvttpd2uqq512_mask):
        Use fixuns instead ufix or floatuns instead ufloat in CODE_FOR_ names.

2018-05-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85900
        PR target/85345
        * varasm.c (assemble_alias): Lookup ifunc attribute on error.

2018-05-25  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv-protos.h (riscv_epilogue_uses): New.
        * config/riscv/riscv.c (struct machine_function): Add
        interrupt_handler_p and attribute_checked_p fields.
        (riscv_attribute_table): Add interrupt.
        (riscv_interrupt_type_p): New.
        (riscv_save_reg_p): Save extra regs for interrupt handler.
        (riscv_use_save_libcall): Return false  for interrupt handler.
        (riscv_first_stack_step): Add forward declaration.
        (riscv_compute_frame_info): New local interrupt_save_t1.  Set it
        for interrupt handler with large frame.  Use it for saved reg list.
        (riscv_expand_prologue): Move flag_stack_usage_info support to
        eliminate duplication.
        (riscv_expand_epilogue): Generate mret for interrupt handler.
        (riscv_epilogue_uses): New.
        (riscv_can_use_return_insn): Return false for interrupt handler.
        (riscv_function_ok_for_sibcall): Likewise.
        (riscv_set_current_function): Add interrupt handler support.
        * config/riscv/riscv.h (EPILOGUE_USES): Call riscv_epilogue_uses.
        * config/riscv/riscv.md (UNSPECV_MRET): New.
        (GP_REGNUM): New.
        (riscv_frflags, riscv_fsflags): Use tab after opcode.
        (riscv_mret): New.
        * doc/extend.texi (RISC-V Function Attributes) <interrupt>: New.

2018-05-25  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR tree-optimization/85712
        * gimple-ssa-strength-reduction.c (replace_one_candidate): Skip if
        this candidate has already been replaced in-situ by a copy.

2018-05-25  Jason Merrill  <jason@redhat.com>

        PR c++/80485 - inline function non-zero address.
        * symtab.c (nonzero_address): Check DECL_COMDAT.

2018-05-25  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * config/alpha/alpha.md (ashlsi3): New insn pattern.
        (*ashlsi_se): Rename from *ashldi_se.  Define as sign
        extension of SImode operation.  Use const123_operand predicate.
        (*saddsi_1): Remove.
        (*saddl_se_1): Ditto.
        (*ssubsi_1): Ditto.
        (*ssubl_se_1): Ditto.
        * config/alpha/predicates.md (const123_operand): New predicate.
        * config/alpha/constraints.md (P): Use IN_RANGE.

2018-05-25  Richard Biener  <rguenther@suse.de>

        * tree-ssa-alias.h (refs_may_alias_p): Add tbaa_p bool parameter,
        defaulted to true.
        (ref_maybe_used_by_stmt_p): Likewise.
        (stmt_may_clobber_ref_p): Likewise.
        (stmt_may_clobber_ref_p_1): Likewise.
        * tree-ssa-alias.c (refs_may_alias_p): Add tbaa_p bool parameter
        and pass it along.
        (ref_maybe_used_by_stmt_p): Likewise.
        (stmt_may_clobber_ref_p): Likewise.
        (stmt_may_clobber_ref_p_1): Likewise.
        * tree-vect-data-refs.c (vect_slp_analyze_node_dependences): Use
        the alias oracle to disambiguate DRs with stmts DR analysis
        couldn't handle.
        (vect_analyze_data_refs): Do not give up on not analyzable
        DRs for BB vectorization.  Remove code truncating the dataref
        vector.

2018-05-25  Jakub Jelinek  <jakub@redhat.com>

        PR target/85832
        * config/i386/sse.md (<avx512>_eq<mode>3<mask_scalar_merge_name>_1):
        Add (=Yk,v,C) variant using vptestm insn.  Use TARGET_AVX512BW
        in test instead of TARGET_AVX512F for VI12_AVX512VL iterator.

2018-05-25  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_find_stmt_data_reference): New
        function, combining stmt data ref gathering and fatal analysis
        parts.
        (vect_analyze_data_refs): Remove now redudnant code and simplify.
        * tree-vect-loop.c (vect_get_datarefs_in_loop): Factor out from
        vect_analyze_loop_2 and use vect_find_stmt_data_reference.
        * tree-vect-slp.c (vect_slp_bb): Use vect_find_stmt_data_reference.
        * tree-vectorizer.h (vect_find_stmt_data_reference): Declare.

2018-05-25  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/85720
        * tree-loop-distribution.c (break_alias_scc_partitions): Don't merge
        SCC if all partitions are builtins.
        (version_loop_by_alias_check): New parameter.  Generate cancelable
        runtime alias check if all partitions are builtins.
        (distribute_loop): Update call to above function.

2018-05-25  Bin Cheng  <bin.cheng@arm.com>

        * tree-outof-ssa.c (tree-ssa.h, tree-dfa.h): Include header files.
        (create_default_def, for_all_parms): Moved from tree-ssa-coalesce.c.
        (parm_default_def_partition_arg): Ditto.
        (set_parm_default_def_partition): Ditto.
        (get_parm_default_def_partitions): Ditto and make it static.
        (get_undefined_value_partitions): Ditto and make it static.
        (remove_ssa_form): Refactor call to init_var_map here.
        * tree-ssa-coalesce.c (build_ssa_conflict_graph): Support live range
        computation for loop region.
        (coalesce_partitions, compute_optimized_partition_bases): Ditto.
        (register_default_def): Delete.
        (for_all_parms, create_default_def): Move to tree-outof-ssa.c.
        (parm_default_def_partition_arg): Ditto.
        (set_parm_default_def_partition): Ditto.
        (get_parm_default_def_partitions): Ditto and make it static.
        (get_undefined_value_partitions): Ditto and make it static.
        (coalesce_with_default, coalesce_with_default): Update comment.
        (create_coalesce_list_for_region): New func factored out from
        create_outofssa_var_map.
        (populate_coalesce_list_for_outofssa): New func factored out from
        create_outofssa_var_map and coalesce_ssa_name.
        (create_outofssa_var_map): Delete.
        (coalesce_ssa_name): Refactor to support live range computation.
        * tree-ssa-coalesce.h (coalesce_ssa_name): Change decl.
        (get_parm_default_def_partitions): Delete.
        (get_undefined_value_partitions): Ditto.
        * tree-ssa-live.c (init_var_map, delete_var_map): Support live range
        computation for loop region.
        (new_tree_live_info, loe_visit_block): Ditto.
        (live_worklist, set_var_live_on_entry): Ditto.
        (calculate_live_on_exit, verify_live_on_entry): Ditto.
        * tree-ssa-live.h (struct _var_map): New fields.
        (init_var_map): Change decl.
        (region_contains_p): New.

2018-05-25  Bin Cheng  <bin.cheng@arm.com>

        * tree-ssa-live.h (live_merge_and_clear): Delete.

2018-05-25  Richard Biener  <rguenther@suse.de>

        PR c++/85912
        * tree-dump.c (dequeue_and_dump): Remove access to removed
        operand 2 of a SWITCH_EXPR.

2018-05-25  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/sourcebuild.texi (vect_double_cond_arith): Include
        multiplication and division.
        * doc/md.texi (cond_mul@var{m}, cond_div@var{m}, cond_mod@var{m})
        (cond_udiv@var{m}, cond_umod@var{m}): Document.
        * optabs.def (cond_smul_optab, cond_sdiv_optab, cond_smod_optab)
        (cond_udiv_optab, cond_umod_optab): New optabs.
        * internal-fn.def (IFN_COND_MUL, IFN_COND_DIV, IFN_COND_MOD)
        (IFN_COND_RDIV): New internal functions.
        * internal-fn.c (get_conditional_internal_fn): Handle TRUNC_DIV_EXPR,
        TRUNC_MOD_EXPR and RDIV_EXPR.
        * match.pd (UNCOND_BINARY, COND_BINARY): Handle them.
        * config/aarch64/iterators.md (UNSPEC_COND_MUL, UNSPEC_COND_DIV):
        New unspecs.
        (SVE_INT_BINARY): Include mult.
        (SVE_COND_FP_BINARY): Include UNSPEC_MUL and UNSPEC_DIV.
        (optab, sve_int_op): Handle mult.
        (optab, sve_fp_op, commutative): Handle UNSPEC_COND_MUL and
        UNSPEC_COND_DIV.
        * config/aarch64/aarch64-sve.md (cond_<optab><mode>): New pattern
        for SVE_INT_BINARY_SD.

2018-05-25  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/iterators.md (SVE_INT_BINARY_SD): New code iterator.
        (optab, sve_int_op): Handle div and udiv.
        * config/aarch64/aarch64-sve.md (<optab><mode>3): New expander
        for SVE_INT_BINARY_SD.
        (*<optab><mode>3): New insn for the same.

2018-05-25  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-patterns.c: Include predict.h.
        (vect_recog_divmod_pattern): Restrict check for division support
        to when optimizing for size.

2018-05-25  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/sourcebuild.texi (vect_double_cond_arith: Document.
        * gimple-match.h (gimple_match_op::MAX_NUM_OPS): Bump to 4.
        (gimple_match_op::gimple_match_op): Add an overload for 4 operands.
        (gimple_match_op::set_op): Likewise.
        (gimple_resimplify4): Declare.
        * genmatch.c (get_operand_type): Handle CFN_COND_* functions.
        (expr::gen_transform): Likewise.
        (decision_tree::gen): Generate a simplification routine for 4 operands.
        * gimple-match-head.c (gimple_simplify): Add an overload for
        4 operands.  In the top-level function, handle up to 4 call
        arguments and call gimple_resimplify4.
        (gimple_resimplify4): New function.
        (build_call_internal): Pass a fourth operand.
        (maybe_push_to_seq): Likewise.
        * match.pd (UNCOND_BINARY, COND_BINARY): New operator lists.
        Fold VEC_COND_EXPRs of an operation and a default value into
        an IFN_COND_* function if possible.
        * config/aarch64/iterators.md (UNSPEC_COND_MAX, UNSPEC_COND_MIN):
        New unspecs.
        (SVE_COND_FP_BINARY): Include them.
        (optab, sve_fp_op): Handle them.
        (SVE_INT_BINARY_REV): New code iterator.
        (SVE_COND_FP_BINARY_REV): New int iterator.
        (commutative): New int attribute.
        * config/aarch64/aarch64-protos.h (aarch64_sve_prepare_conditional_op):
        Declare.
        * config/aarch64/aarch64.c (aarch64_sve_prepare_conditional_op): New
        function.
        * config/aarch64/aarch64-sve.md (cond_<optab><mode>): Use it.
        (*cond_<optab><mode>): New patterns for reversed operands.

2018-05-25  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (STMT_VINFO_GROUP_*, GROUP_*): Remove.
        (DR_GROUP_*): New, assert we have non-NULL ->data_ref_info.
        (REDUC_GROUP_*): New, assert we have NULL ->data_ref_info.
        (STMT_VINFO_GROUPED_ACCESS): Adjust.
        * tree-vect-data-refs.c (everywhere): Adjust users.
        * tree-vect-loop.c (everywhere): Likewise.
        * tree-vect-slp.c (everywhere): Likewise.
        * tree-vect-stmts.c (everywhere): Likewise.
        * tree-vect-patterns.c (vect_reassociating_reduction_p): Likewise.

2018-05-25  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * configure.ac (gcc_cv_as_section_has_e): Move to common section.
        Rename to...
        (gcc_cv_as_section_exclude): ... this.
        Try Solaris as #exclude syntax.
        * configure: Regenerate.
        * config.in: Regenerate.
        * config/i386/i386.c (i386_solaris_elf_named_section): Handle
        SECTION_EXCLUDE.
        * config/sparc/sparc.c (sparc_solaris_elf_asm_named_section)
        [HAVE_GAS_SECTION_EXCLUDE]: Handle SECTION_EXCLUDE.

        * varasm.c (default_elf_asm_named_section): Don't check if
        HAVE_GAS_SECTION_EXCLUDE is defined.

2018-05-25  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/md.texi: Update the documentation of the cond_* optabs
        to mention the new final operand.  Fix GET_MODE_NUNITS call.
        Describe the scalar case too.
        * internal-fn.def (IFN_EXTRACT_LAST): Change type to fold_left.
        * internal-fn.c (expand_cond_unary_optab_fn): Expect 3 operands
        instead of 2.
        (expand_cond_binary_optab_fn): Expect 4 operands instead of 3.
        (get_conditional_internal_fn): Update comment.
        * tree-vect-loop.c (vectorizable_reduction): Pass the original
        accumulator value as a final argument to conditional functions.
        * config/aarch64/aarch64-sve.md (cond_<optab><mode>): Turn into
        a define_expand and add an "else" operand.  Assert for now that
        the else operand is equal to operand 2.  Use SVE_INT_BINARY and
        SVE_COND_FP_BINARY instead of SVE_COND_INT_OP and SVE_COND_FP_OP.
        (*cond_<optab><mode>): New patterns.
        * config/aarch64/iterators.md (UNSPEC_COND_SMAX, UNSPEC_COND_UMAX)
        (UNSPEC_COND_SMIN, UNSPEC_COND_UMIN, UNSPEC_COND_AND, UNSPEC_COND_ORR)
        (UNSPEC_COND_EOR): Delete.
        (optab): Remove associated mappings.
        (SVE_INT_BINARY): New code iterator.
        (sve_int_op): Remove int attribute and add "minus" to the code
        attribute.
        (SVE_COND_INT_OP): Delete.
        (SVE_COND_FP_OP): Rename to...
        (SVE_COND_FP_BINARY): ...this.

2018-05-25  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (can_reuse_operands_p): New function.
        (maybe_legitimize_operands): Try to reuse the results for
        earlier operands.

2018-05-24  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/sse.md (cvtusi2<ssescalarmodesuffix>64<round_name>):
        Add {q} suffix to insn mnemonic.

2018-05-23  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        * config/msp430/msp430.c (TARGET_WARN_FUNC_RETURN): Define.
        (msp430_warn_func_return): New.

2018-05-24  Roger Sayle  <roger@nextmovesoftware.com>

        * fold-const.c (tree_nonzero_bits): New function.
        * fold-const.h (tree_nonzero_bits): Likewise.
        * match.pd (POPCOUNT): New patterns to fold BUILTIN_POPCOUNT and
        friends.  POPCOUNT(x&1) => x&1, POPCOUNT(x)==0 => x==0, etc.

2018-05-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85900
        PR target/85345
        * varasm.c (assemble_alias): Check ifunc_resolver only on
        FUNCTION_DECL.

2018-05-24  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85903
        * config/i386/sse.md (movdi_to_sse): Do not generate pseudo
        when memory input operand is handled.

2018-05-24  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.c (qdf24xx_addrcost_table): New static
        global.
        (qdf24xx_tunings) <addr_costs>: Set to qdf24xx_addrcost_table.

2018-05-24  Richard Sandiford  <richard.sandiford@linaro.org>

        * match.pd: Delay FMA folds until after vectorization.

2018-05-24  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR target/83009
        * config/aarch64/predicates.md (aarch64_mem_pair_lanes_operand): Make
        address check not strict.

2018-05-24  Richard Sandiford  <richard.sandiford@linaro.org>

        * gimple-match.h (gimple_match_op): New class.
        (mprts_hook): Replace parameters with a gimple_match_op *.
        (maybe_build_generic_op): Likewise.
        (gimple_simplified_result_is_gimple_val): Replace parameters with
        a const gimple_match_op *.
        (gimple_simplify): Replace code_helper * and tree * parameters with
        a gimple_match_op * parameter.
        (gimple_resimplify1): Replace code_helper *, tree and tree *
        parameters with a gimple_match_op * parameter.
        (gimple_resimplify2): Likewise.
        (gimple_resimplify3): Likewise.
        (maybe_push_res_to_seq): Replace code_helper, tree and tree *
        parameters with a gimple_match_op * parameter.
        * gimple-match-head.c (gimple_simplify): Change prototypes of
        auto-generated functions to take a gimple_match_op * instead of
        separate code_helper * and tree * parameters.  Make the same
        change in the top-level overload and update calls to the
        gimple_resimplify routines.  Update calls to the auto-generated
        functions and to maybe_push_res_to_seq in the publicly-facing
        operation-specific gimple_simplify overloads.
        (gimple_match_op::MAX_NUM_OPS): Define.
        (gimple_resimplify1): Replace rcode and ops with a single res_op
        parameter.  Update call to gimple_simplify.
        (gimple_resimplify2): Likewise.
        (gimple_resimplify3): Likewise.
        (mprts_hook): Replace parameters with a gimple_match_op *.
        (maybe_build_generic_op): Likewise.
        (build_call_internal): Replace type, nargs and ops with
        a gimple_match_op *.
        (maybe_push_res_to_seq): Replace res_code, type and ops parameters
        with a single gimple_match_op *.  Update calls to mprts_hook,
        build_call_internal and gimple_simplified_result_is_gimple_val.
        Factor out code that is common to the tree_code and combined_fn cases.
        * genmatch.c (expr::gen_transform): Replace tem_code and
        tem_ops with a gimple_match_op called tem_op.  Update calls
        to the gimple_resimplify functions and maybe_push_res_to_seq.
        (dt_simplify::gen_1): Manipulate res_op instead of res_code and
        res_ops.  Update call to the gimple_resimplify functions.
        (dt_simplify::gen): Pass res_op instead of res_code and res_ops.
        (decision_tree::gen): Make the functions take a gimple_match_op *
        called res_op instead of separate res_code and res_ops parameters.
        Update call accordingly.
        * gimple-fold.c (replace_stmt_with_simplification): Replace rcode
        and ops with a single res_op parameter.  Update calls to
        maybe_build_generic_op and maybe_push_res_to_seq.
        (fold_stmt_1): Update calls to gimple_simplify and
        replace_stmt_with_simplification.
        (gimple_fold_stmt_to_constant_1): Update calls to gimple_simplify
        and gimple_simplified_result_is_gimple_val.
        * tree-cfgcleanup.c (cleanup_control_expr_graph): Update call to
        gimple_simplify.
        * tree-ssa-sccvn.c (vn_lookup_simplify_result): Replace parameters
        with a gimple_match_op *.
        (vn_nary_build_or_lookup): Likewise.  Update call to
        vn_nary_build_or_lookup_1.
        (vn_nary_build_or_lookup_1): Replace rcode, type and ops with a
        gimple_match_op *.  Update calls to the gimple_resimplify routines
        and to gimple_simplified_result_is_gimple_val.
        (vn_nary_simplify): Update call to vn_nary_build_or_lookup_1.
        Use gimple_match_op::MAX_NUM_OPS instead of a hard-coded 3.
        (vn_reference_lookup_3): Update call to vn_nary_build_or_lookup.
        (visit_nary_op): Likewise.
        (visit_reference_op_load): Likewise.

2018-05-23  Luis Machado  <luis.machado@linaro.org>

        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Use correct type
        modifier for printing the step amount.

2018-05-23  Jozef Lawrynowicz  <jozef.l@somniumtech.com>

        PR target/78849
        * tree.c (build_common_tree_nodes): Dont set TYPE_SIZE for __intN
        types.

2018-05-23  Segher Boessenkool  <segher@kernel.crashing.org>

        * doc/sourcebuild.texi (Endianness): New subsubsection.

2018-05-23  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64-protos.h (cpu_prefetch_tune)
        <prefetch_dynamic_strides>: New const bool field.
        * config/aarch64/aarch64.c (generic_prefetch_tune): Update to include
        prefetch_dynamic_strides.
        (exynosm1_prefetch_tune): Likewise.
        (thunderxt88_prefetch_tune): Likewise.
        (thunderx_prefetch_tune): Likewise.
        (thunderx2t99_prefetch_tune): Likewise.
        (qdf24xx_prefetch_tune): Likewise. Set prefetch_dynamic_strides to
        false.
        (aarch64_override_options_internal): Update to set
        PARAM_PREFETCH_DYNAMIC_STRIDES.
        * doc/invoke.texi (prefetch-dynamic-strides): Document new option.
        * params.def (PARAM_PREFETCH_DYNAMIC_STRIDES): New.
        * params.h (PARAM_PREFETCH_DYNAMIC_STRIDES): Define.
        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Account for
        prefetch-dynamic-strides setting.

2018-05-23  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64-protos.h (cpu_prefetch_tune)
        <minimum_stride>: New const int field.
        * config/aarch64/aarch64.c (generic_prefetch_tune): Update to include
        minimum_stride field defaulting to -1.
        (exynosm1_prefetch_tune): Likewise.
        (thunderxt88_prefetch_tune): Likewise.
        (thunderx_prefetch_tune): Likewise.
        (thunderx2t99_prefetch_tune): Likewise.
        (qdf24xx_prefetch_tune) <minimum_stride>: Set to 2048.
        <default_opt_level>: Set to 3.
        (aarch64_override_options_internal): Update to set
        PARAM_PREFETCH_MINIMUM_STRIDE.
        * doc/invoke.texi (prefetch-minimum-stride): Document new option.
        * params.def (PARAM_PREFETCH_MINIMUM_STRIDE): New.
        * params.h (PARAM_PREFETCH_MINIMUM_STRIDE): Define.
        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Return false if
        stride is constant and is below the minimum stride threshold.

2018-05-23  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (mode26): Delete.
        (armv4): Delete mode26 reference.
        * config/arm/arm.c (arm_configure_build_target): Delete use of
        isa_bit_mode26.

2018-05-23  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*floatuns<SWI48:mode><MODEF:mode>2_avx512):
        New insn pattern.
        (floatunssi<mode>2): Also enable for AVX512F and TARGET_SSE_MATH.
        Rewrite expander pattern.  Emit gen_floatunssi<mode>2_i387_with_xmm
        for non-SSE modes.
        (floatunsdisf2): Rewrite expander pattern.  Hanlde TARGET_AVX512F.
        (floatunsdidf2): Ditto.

2018-05-23  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (fixuns_trunc<mode>di2): New insn pattern.
        (fixuns_trunc<mode>si2_avx512f): Ditto.
        (*fixuns_trunc<mode>si2_avx512f_zext): Ditto.
        (fixuns_trunc<mode>si2): Also enable for AVX512F and TARGET_SSE_MATH.
        Emit fixuns_trunc<mode>si2_avx512f for AVX512F targets.

2018-05-23  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/79985
        * df-scan.c (df_insn_refs_collect): Remove special case for
        global registers and asm statements.

2018-05-23  Alexander Monakov  <amonakov@ispras.ru>

        * extend.texi (Global Register Variables): Rewrite the bullet list.
        Note that the register is available for allocation. Note that access
        via inline asm must use constraints. Add note about async-signal
        handlers. Remove paragraph about automagic register selection.

2018-05-23  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vn_reference_lookup_3): Remove restriction
        of fixed offset from memset VN.

2018-05-23  Bill Schmidt  <wschmidt@linux.ibm.com>

        * gimple-ssa-strength-reduction.c (struct slsr_cand_d): Add
        first_interp field.
        (alloc_cand_and_find_basis): Initialize first_interp field.
        (slsr_process_mul): Modify first_interp field.
        (slsr_process_add): Likewise.
        (slsr_process_cast): Modify first_interp field for each new
        interpretation.
        (slsr_process_copy): Likewise.
        (dump_candidate): Dump first_interp field.
        (replace_mult_candidate): Process all interpretations, not just
        subsequent ones.
        (replace_rhs_if_not_dup): Likewise.
        (replace_one_candidate): Likewise.

2018-05-23  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.c (aarch64_use_frame_pointer):
        Add new boolean.
        (aarch64_needs_frame_chain): New function.
        (aarch64_parse_override_string): Set aarch64_use_frame_pointer.

2018-05-23  Sudakshina Das  <sudi.das@arm.com>

        PR target/84882
        * common/config/aarch64/aarch64-common.c (aarch64_handle_option):
        Check val before adding MASK_STRICT_ALIGN to opts->x_target_flags.
        * config/aarch64/aarch64.opt (mstrict-align): Remove RejectNegative.
        * config/aarch64/aarch64.c (aarch64_attributes): Mark allow_neg
        as true for strict-align.
        (aarch64_can_inline_p): Perform checks even when callee has no
        attributes to check for strict alignment.
        * doc/extend.texi (AArch64 Function Attributes): Document
        no-strict-align.
        * doc/invoke.texi: (AArch64 Options): Likewise.

2018-05-23  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85853
        * tree-vect-slp.c (vect_slp_analyze_node_operations): Split out
        the handling of the root of the node to...
        (vect_slp_analyze_node_operations_1): ...this new function,
        and run the whole thing with the child nodes' def types
        set according to their SLP node's def type.

2018-05-23  Richard Biener  <rguenther@suse.de>

        PR middle-end/85874
        * tree-data-ref.c (create_runtime_alias_checks): Defer
        and ignore overflow warnings.

2018-05-23  Yury Gribov  <tetra2005@gmail.com>

        PR tree-optimization/85822
        * tree-vrp.c (is_masked_range_test): Fix handling of negative
        constants.

2018-05-23  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vn_reference_lookup_3): Handle arbitrary
        memset constants via native_interpret_expr.

2018-05-22  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85345
        * cgraph.h (cgraph_node::create): Set ifunc_resolver for ifunc
        attribute.
        (cgraph_node::create_alias): Likewise.
        (cgraph_node::get_availability): Check ifunc_resolver instead
        of looking up ifunc attribute.
        * cgraphunit.c (maybe_diag_incompatible_alias): Likewise.
        * varasm.c (do_assemble_alias): Likewise.
        (assemble_alias): Likewise.
        (default_binds_local_p_3): Likewise.
        * cgraph.h (cgraph_node): Add ifunc_resolver.
        (cgraph_node::only_called_directly_or_aliased_p): Return false
        for IFUNC resolver.
        * lto-cgraph.c (input_node): Set ifunc_resolver for ifunc
        attribute.
        * symtab.c (symtab_node::verify_base): Verify that ifunc_resolver
        is equivalent to lookup_attribute ("ifunc", DECL_ATTRIBUTES (decl)).
        (symtab_node::binds_to_current_def_p): Check ifunc_resolver
        instead of looking up ifunc attribute.

2018-05-22  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.md (*ashift<mode>_extv_bfiz): New pattern.

2018-05-22  Martin Sebor  <msebor@redhat.com>

        PR middle-end/85359
        * builtins.c (expand_builtin_strcpy): Call maybe_warn_nonstring_arg
        only when expasion succeeds.
        (expand_builtin_strcmp): Same.
        (expand_builtin_strncmp): Same.

2018-05-22  Martin Sebor  <msebor@redhat.com>

        * calls.c (maybe_warn_nonstring_arg): Fix a typo in a comment.

2018-05-22  Jackson Woodruff  <jackson.woodruff@arm.com>
            Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-ldpstp.md: Replace uses of
        aarch64_mem_pair_operand with memory_operand and delete operand swapping
        code.
        * config/aarch64/aarch64.c (aarch64_operands_ok_for_ldpstp):
        Add check for legitimate_address.
        (aarch64_gen_adjusted_ldpstp): Swap operands where appropriate.
        (aarch64_swap_ldrstr_operands): New.
        * config/aarch64/aarch64-protos.h (aarch64_swap_ldrstr_operands):
        Define prototype.

2018-05-22  Jackson Woodruff  <jackson.woodruff@arm.com>
            Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.md: New patterns to generate stp
        and ldp.
        (store_pair_sw, store_pair_dw): New patterns to generate stp for
        single words and double words.
        (load_pair_sw, load_pair_dw): Likewise.
        (store_pair_sf, store_pair_df, store_pair_si, store_pair_di):
        Delete.
        (load_pair_sf, load_pair_df, load_pair_si, load_pair_di):
        Delete.
        * config/aarch64/aarch64-ldpstp.md: Modify peephole
        for different mode ldpstp and add peephole for merged zero stores.
        Likewise for loads.
        * config/aarch64/aarch64.c (aarch64_operands_ok_for_ldpstp):
        Add size check.
        (aarch64_gen_store_pair): Rename calls to match new patterns.
        (aarch64_gen_load_pair): Rename calls to match new patterns.
        * config/aarch64/aarch64-simd.md (load_pair<mode>): Rename to...
        (load_pair<DREG:mode><DREG2:mode>): ... This.
        (store_pair<mode>): Rename to...
        (vec_store_pair<DREG:mode><DREG2:mode>): ... This.
        * config/aarch64/iterators.md (DREG, DREG2, DX2, SX, SX2, DSX):
        New mode iterators.
        (V_INT_EQUIV): Handle SImode.
        * config/aarch64/predicates.md (aarch64_reg_zero_or_fp_zero):
        New predicate.

2018-05-22  Martin Sebor  <msebor@redhat.com>

        PR c/85623
        * calls.c (maybe_warn_nonstring_arg): Use string length to set
        or ajust the presumed bound on an operation to avoid unnecessary
        warnings.

2018-05-22  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/85826
        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Avoid
        assuming that a DECL necesarily has a constant size.

2018-05-22  Richard Sandiford  <richard.sandiford@linaro.org>

        PR middle-end/85862
        * internal-fn.c (expand_direct_optab_fn): Cope with a null lhs.

2018-05-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85834
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Properly handle
        non-constant and non-zero memset arguments.

2018-05-22  Martin Liska  <mliska@suse.cz>

        PR ipa/85607
        * ipa-icf.c (sem_item::add_type): Do not ICE for incomplete types.

2018-05-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85863
        * tree-vect-stmts.c (vect_is_simple_cond): Only widen invariant
        comparisons when vectype is specified.
        (vectorizable_condition): Do not specify vectype for
        vect_is_simple_cond when SLP vectorizing.

2018-05-21  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85657
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Do not
        define __ibm128 as long double.
        * config/rs6000/rs6000.c (rs6000_init_builtins): Create __ibm128
        as a distinct type when IEEE 128-bit support is enabled.
        (init_float128_ieee): Fix up conversions between IFmode and IEEE
        128-bit types to use the correct functions.
        (rs6000_expand_float128_convert): Use explicit FLOAT_EXTEND to
        convert between 128-bit floating point types that have different
        modes but the same representation, instead of using gen_lowpart to
        makean alias.
        * config/rs6000/rs6000.md (IFKF): New iterator for IFmode and
        KFmode.
        (IFKF_reg): New attributes to give the register constraints for
        IFmode and KFmode.
        (extend<mode>tf2_internal): New insns to mark an explicit
        conversion between 128-bit floating point types that have a
        different mode but share the same representation.

2018-05-21  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85814
        * tree-ssa-strlen.c (get_stridx_plus_constant): Cope with
        a null return from get_strinfo when unsharing the next
        strinfo in the chain.

2018-05-21  Vladimir Mezentsev  <vladimir.mezentsev@oracle.com>

        PR gcc/84923
        * varasm.c (weak_finish): Clean up weak_decls.

2018-05-21  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.md ("unspec"): Define UNSPEC_SABAL,
        UNSPEC_SABDL2, UNSPEC_SADALP, UNSPEC_UABAL, UNSPEC_UABDL2,
        UNSPEC_UADALP values.
        * config/aarch64/iterators.md (ABAL): New int iterator.
        (ABDL2): Likewise.
        (ADALP): Likewise.
        (sur): Add mappings for the above.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abdl2<mode>_3):
        New define_insn.
        (aarch64_<sur>abal<mode>_4): Likewise.
        (aarch64_<sur>adalp<mode>_3): Likewise.
        (<sur>sadv16qi): New define_expand.

2018-05-21  Alexander Nesterovskiy  <alexander.nesterovskiy@intel.com>

        * config/i386/i386.md (*movsf_internal): AVX falsedep fix.
        (*movdf_internal): Ditto.
        (*rcpsf2_sse): Ditto.
        (*rsqrtsf2_sse): Ditto.
        (*sqrt<mode>2_sse): Ditto.

2018-05-21  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_eor3qv8hi): Change to
        eor3q<mode>4.
        (aarch64_bcaxqv8hi): Change to bcaxq<mode>4.
        * config/aarch64/aarch64-simd-builtins.def (veor3q_u8, veor3q_u32,
        veor3q_u64, veor3q_s8, veor3q_s16, veor3q_s32, veor3q_s64, vbcaxq_u8,
        vbcaxq_u32, vbcaxq_u64, vbcaxq_s8, vbcaxq_s16, vbcaxq_s32,
        vbcaxq_s64): New.
        * config/aarch64/arm_neon.h: Likewise.
        * config/aarch64/iterators.md (VQ_I): New.

2018-05-21  Alexey Brodkin <abrodkin@synopsys.com>

        * config.gcc: Add arc/t-multilib-linux to tmake_file for
        arc*-*-linux*.
        * config/arc/t-multilib-linux: Specify MULTILIB_OPTIONS and
        MULTILIB_DIRNAMES

2018-05-20  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constraints.md (S): New constraint.
        * config/nds32/nds32.md (call_internal): Use constraint S.
        (call_value_internal): Likewise.
        (sibcall_internal): Likewise.
        (sibcall_value_internal): Likewise.

2018-05-20  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_register_move_cost): Take garywolf cpu
        into consideration.

2018-05-20  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-cost.c (rtx_cost_model_t): New structure.
        (insn_size_16bit, insn_size_32bit): New variables for cost evaluation.
        (nds32_rtx_costs_impl): Simplify.
        (nds32_address_cost_impl): Simplify.
        (nds32_init_rtx_costs): New function.
        (nds32_rtx_costs_speed_prefer): Likewise.
        (nds32_rtx_costs_size_prefer): Likewise.
        (nds32_address_cost_speed_prefer): Likewise.
        (nds32_address_cost_speed_fwprop): Likewise.
        (nds32_address_cost_size_prefer): Likewise.
        * config/nds32/nds32-protos.h (nds32_init_rtx_costs): Declare.
        * config/nds32/nds32.c (nds32_option_override): Use
        nds32_init_rtx_costs function.

2018-05-20  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_asm_file_start): Output pipeline model.
        * config/nds32/nds32.h (TARGET_PIPELINE_N7): Define.
        (TARGET_PIPELINE_N8): Likewise.
        (TARGET_PIPELINE_N10): Likewise.
        (TARGET_PIPELINE_N13): Likewise.
        (TARGET_PIPELINE_GRAYWOLF): Likewise.

2018-05-19  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/nds32-fpu.md: Update copyright year.

2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (ASM_SPEC): Adjust spec rule.

2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c
        (nds32_md_asm_adjust): Consider flag_inline_asm_r15 variable.
        * config/nds32/nds32.opt (minline-asm-r15): New option.

2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>

        * common/config/nds32/nds32-common.c (TARGET_DEFAULT_TARGET_FLAGS): Add
        MASK_HW_ABS.
        * config/nds32/nds32.md (abssi2): New pattern.

2018-05-19  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (rex64namesuffix): New mode attribute.
        * config/i386/sse.md (sse_cvtsi2ss<rex64namesuffix><round_name>):
        Merge insn pattern from sse_cvtsi2ss<round_name> and
        sse_cvtsi2ssq<round_name> using SWI48 mode iterator.
        (sse_cvtss2si<rex64namesuffix><round_name>): Merge insn pattern
        from sse_cvtss2si<round_name> and sse_cvtss2siq<round_name>
        using SWI48 mode iterator.
        (sse_cvtss2si<rex64namesuffix>_2): Merge insn pattern from
        sse_cvtss2si_2 and sse_cvtss2siq_2 using SWI48 mode iterator.
        (sse_cvttss2si<rex64namesuffix><round_saeonly_name>): Merge insn
        pattern from sse_cvttss2si<round_saeonly_name>
        and sse_cvttss2siq<round_saeonly_name> using SWI48 mode iterator.
        (avx512f_vcvtss2usi<rex64namesuffix><round_name>): Merge insn pattern
        from avx512f_vcvtss2usi<round_name> and avx512f_vcvtss2usiq<round_name>
        using SWI48 mode iterator.
        (avx512f_vcvttss2usi<rex64namesuffix><round_saeonly_name>): Merge
        insn pattern from avx512f_vcvttss2usi<round_saeonly_name> and
        avx512f_vcvttss2usiq<round_saeonly_name> using SWI48 mode iterator.
        (avx512f_vcvtsd2usi<rex64namesuffix><round_name>): Merge insn pattern
        from avx512f_vcvtsd2usi<round_name> and avx512f_vcvtsd2usiq<round_name>
        using SWI48 mode iterator.
        (avx512f_vcvttsd2usi<rex64namesuffix><round_saeonly_name>): Merge
        insn pattern from avx512f_vcvttsd2usi<round_saeonly_name> and
        avx512f_vcvttsd2usiq<round_saeonly_name> using SWI48 mode iterator.
        (sse2_cvtsd2si<rex64namesuffix><round_name>): Merge insn pattern from
        sse2_cvtsd2si<round_name> and sse2_cvtsd2siq<round_name> using
        SWI48 mode iterator.
        (sse2_cvtsd2si<rex64namesuffix>_2): Merge insn pattern from
        sse2_cvtsd2si_2 and sse2_cvtsd2siq_2 using SWI48 mode iterator.
        (sse_cvttsd2si<rex64namesuffix><round_saeonly_name>): Merge insn
        pattern from sse_cvttsd2si<round_saeonly_name>
        and sse_cvttsd2siq<round_saeonly_name> using SWI48 mode iterator.

2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-md-auxiliary.c
        (nds32_valid_smw_lwm_base_p): Refine.
        (nds32_output_smw_single_word): Refine.
        (nds32_output_smw_double_word): New.
        * config/nds32/nds32-protos.h (nds32_output_smw_double_word): New.

2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_output_stack_push): Refine.
        (nds32_output_stack_pop): Refine.
        (nds32_expand_unaligned_load): Refine.
        (nds32_expand_unaligned_store): Refine.

2018-05-19  Kuan-Lin Chen <kuanlinchentw@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md: Add TP_REGNUM constant.
        (unspec_element): Add UNSPEC_GOTINIT, UNSPEC_GOT, UNSPEC_GOTOFF,
        UNSPEC_PLT, UNSPEC_TLSGD, UNSPEC_TLSLD, UNSPEC_TLSIE, UNSPEC_TLSLE and
        UNSPEC_ADD32.
        * config/nds32/nds32-doubleword.md: Consider flag_pic.
        * config/nds32/nds32-dspext.md (mov<mode>): Expand TLS and PIC cases.
        * config/nds32/nds32-predicates.c (nds32_const_unspec_p): New.
        * config/nds32/nds32-md-auxiliary.c: Implementation that support TLS
        and PIC code generation.
        * config/nds32/nds32-protos.h: Declarations that support TLS and PIC
        code generation.
        * config/nds32/nds32-relax-opt.c: Consider TLS and PIC for relax
        optimization.
        * config/nds32/nds32.md: Support TLS and PIC.
        * config/nds32/nds32.c: Support TLS and PIC.
        * config/nds32/nds32.h (nds32_relax_insn_type): New enum type.
        * config/nds32/predicates.md (nds32_nonunspec_symbolic_operand): New
        predicate.

2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-predicates.c (const_vector_to_hwint): Use machine
        mode with E_ prefix.

2018-05-19  Kuan-Lin Chen <kuanlinchentw@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_element): Add UNSPEC_ICT.
        * config/nds32/nds32-md-auxiliary.c
        (symbolic_reference_mentioned_p): New.
        (nds32_legitimize_ict_address): New.
        (nds32_expand_ict_move): New.
        (nds32_indirect_call_referenced_p): New.
        (nds32_symbol_binds_local_p): Delete.
        (nds32_long_call_p): Modify.
        * config/nds32/nds32-opts.h (nds32_ict_model_type): New enum type.
        * config/nds32/nds32-protos.h
        (symbolic_reference_mentioned_p): Declare.
        (nds32_legitimize_ict_address): Declare.
        (nds32_expand_ict_move): Declare.
        (nds32_indirect_call_referenced_p): Declare.
        * config/nds32/nds32-relax-opt.c (nds32_ict_const_p): New.
        (nds32_relax_group): Use nds32_ict_const_p as condition.
        * config/nds32/nds32.c (nds32_attribute_table): Add "indirect_call".
        (nds32_asm_file_start): Output ict_model directive in asm code.
        (nds32_legitimate_address_p): Consider indirect call.
        (nds32_print_operand): Consider indirect call.
        (nds32_print_operand_address): Consider indirect call.
        (nds32_insert_attributes): Handle "indirect_call" attribute.
        (TARGET_LEGITIMATE_ADDRESS_P): Define.
        (TARGET_LEGITIMATE_CONSTANT_P): Define.
        (TARGET_CANNOT_FORCE_CONST_MEM): Define.
        (TARGET_DELEGITIMIZE_ADDRESS): Define.
        (TARGET_ASM_OUTPUT_ADDR_CONST_EXTRA): Define.
        * config/nds32/nds32.h (SYMBOLIC_CONST_P): Define.
        (TARGET_ICT_MODEL_SMALL): Define.
        (TARGET_ICT_MODEL_LARGE): Define.
        * config/nds32/nds32.md (movsi): Consider ict model.
        (call, call_value): Consider ict model.
        (sibcall, sibcall_value): Consider ict model.
        * config/nds32/nds32.opt (mict-model): New option.
        * config/nds32/predicates.md (nds32_symbolic_operand): Consider ict
        model.

2018-05-18  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>
            Jim Wilson <jimw@sifive.com>

        * common/config/riscv/riscv-common.c (riscv_parse_arch_string):
        Add support to parse rv32e*.  Clear MASK_RVE for rv32i and rv64i.
        * config.gcc (riscv*-*-*): Add support for rv32e* and ilp32e.
        * config/riscv/riscv-c.c (riscv_cpu_cpp_builtins): Define
        __riscv_32e when TARGET_RVE.  Handle ABI_ILP32E as soft-float ABI.
        * config/riscv/riscv-opts.h (riscv_abi_type): Add ABI_ILP32E.
        * config/riscv/riscv.c (riscv_compute_frame_info): When TARGET_RVE,
        compute save_libcall_adjustment properly.
        (riscv_option_override): Call error if TARGET_RVE and not ABI_ILP32E.
        (riscv_conditional_register_usage): Handle TARGET_RVE and ABI_ILP32E.
        * config/riscv/riscv.h (UNITS_PER_FP_ARG): Handle ABI_ILP32E.
        (STACK_BOUNDARY, ABI_STACK_BOUNDARY): Handle TARGET_RVE.
        (GP_REG_LAST, MAX_ARGS_IN_REGISTERS): Likewise.
        (ABI_SPEC): Handle mabi=ilp32e.
        * config/riscv/riscv.opt (abi_type): Add ABI_ILP32E.
        (RVE): Add RVE mask.
        * doc/invoke.texi (RISC-V options) <-mabi>: Add ilp32e info.
        <-march>: Add rv32e as an example.

2018-05-18  Marc Glisse  <marc.glisse@inria.fr>

        PR c++/82899
        * tree-ssa-structalias.c (create_variable_info_for_1): Extra argument.
        (intra_create_variable_infos): Handle C++ constructors.

2018-05-18  Martin Liska  <mliska@suse.cz>

        * passes.def: Remove a redundant pass.

2018-05-18  Eric Botcazou  <ebotcazou@adacore.com>

        PR bootstrap/85838
        * config/sparc/sparc.c (sparc_expand_builtin): Always initialize op[0].

2018-05-18  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (armv3m, mode32): Delete features.
        (ARMv4): Update.
        (ARMv2, ARMv3, ARMv3m): Delete fgroups.
        (ARMv6m): Update.
        (armv2, armv2a, armv3, armv3m): Delete architectures.
        (arm2, arm250, arm3, arm6, arm60, arm600, arm610, arm620,
        arm7, arm7d, arm7di, arm70, arm700, arm700i, arm710, arm720,
        arm710c, arm7100, arm7500, arm7500fe, arm7m, arm7dm, arm7dmi):
        Delete cpus.
        * config/arm/arm.md (maddsidi4): Remove check for arm_arch3m.
        (*mulsidi3adddi): Likewise.
        (mulsidi3): Likewise.
        (*mulsidi3_nov6): Likewise.
        (umulsidi3): Likewise.
        (umulsidi3_nov6): Likewise.
        (umaddsidi4): Likewise.
        (*umulsidi3adddi): Likewise.
        (smulsi3_highpart): Likewise.
        (*smulsi3_highpart_nov6): Likewise.
        (umulsi3_highpart): Likewise.
        (*umulsi3_highpart_nov6): Likewise.
        * config/arm/arm.h (arm_arch3m): Delete.
        * config/arm/arm.c (arm_arch3m): Delete.
        (arm_option_override_internal): Update armv3-related comment.
        (arm_configure_build_target): Delete use of isa_bit_mode32.
        (arm_option_reconfigure_globals): Delete set of arm_ach3m.
        (arm_rtx_costs_internal): Delete check of arm_arch3m.
        * config/arm/arm-fixed.md (mulsq3): Delete check for arm_arch3m.
        (mulsa3): Likewise.
        (mulusa3): Likewise.
        * config/arm/arm-protos.h (arm_arch3m): Delete.
        * config/arm/arm-tables.opt: Regenerate.
        * config/arm/arm-tune.md: Likewise.
        * config/arm/t-arm-elf (all_early_nofp): Delete mentions of
        deleted architectures.

2018-05-18  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (armv5, armv5e): Delete features.
        (armv5t, armv5te): New features.
        (ARMv5, ARMv5e): Delete fgroups.
        (ARMv5t, ARMv5te): Adjust for above changes.
        (ARMv6m): Likewise.
        (armv5, armv5e): Delete arches.
        * config/arm/arm.md (*call_reg_armv5): Use arm_arch5t instead of
        arm_arch5.
        (*call_reg_arm): Likewise.
        (*call_value_reg_armv5): Likewise.
        (*call_value_reg_arm): Likewise.
        (*call_symbol): Likewise.
        (*call_value_symbol): Likewise.
        (*sibcall_insn): Likewise.
        (*sibcall_value_insn): Likewise.
        (clzsi2): Likewise.
        (prefetch): Likewise.
        (define_split and define_peephole2 dependent on arm_arch5):
        Likewise.
        * config/arm/arm.h (TARGET_LDRD): Use arm_arch5te instead of
        arm_arch5e.
        (TARGET_ARM_QBIT): Likewise.
        (TARGET_DSP_MULTIPLY): Likewise.
        (enum base_architecture): Delete BASE_ARCH_5, BASE_ARCH_5E.
        (arm_arch5, arm_arch5e): Delete.
        (arm_arch5t, arm_arch5te): Declare.
        * config/arm/arm.c (arm_arch5, arm_arch5e): Delete.
        (arm_arch5t): Declare.
        (arm_option_reconfigure_globals): Update for the above.
        (arm_options_perform_arch_sanity_checks): Update comment, replace
        use of arm_arch5 with arm_arch5t.
        (use_return_insn): Likewise.
        (arm_emit_call_insn): Likewise.
        (output_return_instruction): Likewise.
        (arm_final_prescan_insn): Likewise.
        (arm_coproc_builtin_available): Likewise.
        * config/arm/arm-c.c (arm_cpu_builtins): Replace arm_arch5 and
        arm_arch5e with arm_arch5t and arm_arch5te.
        * config/arm/arm-protos.h (arm_arch5, arm_arch5e): Delete.
        (arm_arch5t, arm_arch5te): Declare.
        * config/arm/arm-tables.opt: Regenerate.
        * config/arm/t-arm-elf: Remove references to armv5, armv5e.
        * config/arm/t-multilib: Likewise.
        * config/arm/thumb1.md (*call_reg_thumb1_v5): Check arm_arch5t
        instead of arm_arch5.
        (*call_reg_thumb1): Likewise.
        (*call_value_reg_thumb1_v5): Likewise.
        (*call_value_reg_thumb1): Likewise.
        * config/arm/vxworks.h (TARGET_OS_CPP_BUILTINS): Remove now
        unreachable path.
        * doc/invoke.texi (ARM Options): Remove references to armv5, armv5e.

2018-05-18  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84846
        * doc/gcov.texi: Document -t option of gcov tool.

2018-05-18  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84846
        * gcov.c (print_usage): Add new -t option.
        (process_args): Handle the option.
        (generate_results): Use stdout as output when requested by
        the option.

2018-05-18  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84846
        * coverage.c (coverage_init): Write PWD to .gcno file.
        * doc/gcov.texi: Document how working directory is printed.
        * gcov-dump.c (dump_gcov_file): Print PWD.
        * gcov.c (output_intermediate_file): Likewise.
        (read_graph_file): Read PWD string.
        (output_lines): Print PWD.

2018-05-18  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR middle-end/85817
        * ipa-pure-const.c (malloc_candidate_p): Remove the check integer_zerop
        for retval and return false if all args to phi are zero.

2018-05-18  Richard Biener  <rguenther@suse.de>

        * gimple-ssa-evrp.c (class evrp_folder): Add simplify_stmt_using_ranges
        method.
        (evrp_dom_walker::before_dom_children): Call it.

2018-05-18  Richard Biener  <rguenther@suse.de>

        * tree-dfa.c (get_ref_base_and_extent): Use range-info to refine
        results when processing array refs with variable index.

2018-05-18  Toon Moene  <toon@moene.org>

        * doc/invoke.texi: Move -floop-unroll-and-jam documentation
        directly after that of -floop-interchange. Indicate that both
        options are enabled by default when specifying -O3.

2018-05-18  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (vec_set<mode>): Use VALL_F16 mode
        iterator.  Delete separate integer-mode vec_set<mode> expander.
        (aarch64_simd_vec_setv2di): Delete.
        (vec_setv2di): Delete.
        (aarch64_simd_vec_set<mode>): Delete all other patterns with that name.
        Use VALL_F16 mode iterator.  Add LD1 alternative and use vwcore for
        the "w, r" alternative.

2018-05-18  Martin Liska  <mliska@suse.cz>

        * passes.def: Add pass_lower_switch and pass_lower_switch_O0.
        * tree-pass.h (make_pass_lower_switch_O0): New function.
        * tree-switch-conversion.c (node_has_low_bound): Remove.
        (node_has_high_bound): Likewise.
        (node_is_bounded): Likewise.
        (class pass_lower_switch): Make it a template type and create
        two instances.
        (pass_lower_switch::execute): Add template argument.
        (make_pass_lower_switch): New function.
        (make_pass_lower_switch_O0): New function.
        (do_jump_if_equal): Remove.
        (emit_case_nodes): Simplify to just handle all 3 cases and leave
        all the hard work to tree optimization passes.

2018-05-18  Martin Liska  <mliska@suse.cz>

        * dbgcnt.c (limit_low): Renamed from limit.
        (limit_high): New variable.
        (dbg_cnt_is_enabled): Check for upper limit.
        (dbg_cnt): Adjust dumping.
        (dbg_cnt_set_limit_by_index): Add new argument for high
        value.
        (dbg_cnt_set_limit_by_name): Likewise.
        (dbg_cnt_process_single_pair): Parse new format.
        (dbg_cnt_process_opt): Use strtok.
        (dbg_cnt_list_all_counters): Remove 'value' and add
        'limit_high'.
        * doc/invoke.texi: Document changes.

2018-05-18  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/sourcebuild.texi (scalar_all_fma): Document.
        * tree.def (FMA_EXPR): Delete.
        * internal-fn.def (FMA, FMS, FNMA, FNMS): New internal functions.
        * internal-fn.c (ternary_direct): New macro.
        (expand_ternary_optab_fn): Likewise.
        (direct_ternary_optab_supported_p): Likewise.
        * Makefile.in (build/genmatch.o): Depend on case-fn-macros.h.
        * builtins.c (fold_builtin_fma): Delete.
        (fold_builtin_3): Don't call it.
        * cfgexpand.c (expand_debug_expr): Remove FMA_EXPR handling.
        * expr.c (expand_expr_real_2): Likewise.
        * fold-const.c (operand_equal_p): Likewise.
        (fold_ternary_loc): Likewise.
        * gimple-pretty-print.c (dump_ternary_rhs): Likewise.
        * gimple.c (DEFTREECODE): Likewise.
        * gimplify.c (gimplify_expr): Likewise.
        * optabs-tree.c (optab_for_tree_code): Likewise.
        * tree-cfg.c (verify_gimple_assign_ternary): Likewise.
        * tree-eh.c (operation_could_trap_p): Likewise.
        (stmt_could_throw_1_p): Likewise.
        * tree-inline.c (estimate_operator_cost): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        (op_code_prio): Likewise.
        * tree-ssa-loop-im.c (stmt_cost): Likewise.
        * tree-ssa-operands.c (get_expr_operands): Likewise.
        * tree.c (commutative_ternary_tree_code, add_expr): Likewise.
        * fold-const-call.h (fold_fma): Delete.
        * fold-const-call.c (fold_const_call_ssss): Handle CFN_FMS,
        CFN_FNMA and CFN_FNMS.
        (fold_fma): Delete.
        * genmatch.c (combined_fn): New enum.
        (commutative_ternary_tree_code): Remove FMA_EXPR handling.
        (commutative_op): New function.
        (commutate): Use it.  Handle more than 2 operands.
        (dt_operand::gen_gimple_expr): Use commutative_op.
        (parser::parse_expr): Allow :c to be used with non-binary
        operators if the commutative operand is known.
        * gimple-ssa-backprop.c (backprop::process_builtin_call_use): Handle
        CFN_FMS, CFN_FNMA and CFN_FNMS.
        (backprop::process_assign_use): Remove FMA_EXPR handling.
        * hsa-gen.c (gen_hsa_insns_for_operation_assignment): Likewise.
        (gen_hsa_fma): New function.
        (gen_hsa_insn_for_internal_fn_call): Use it for IFN_FMA, IFN_FMS,
        IFN_FNMA and IFN_FNMS.
        * match.pd: Add folds for IFN_FMS, IFN_FNMA and IFN_FNMS.
        * gimple-fold.h (follow_all_ssa_edges): Declare.
        * gimple-fold.c (follow_all_ssa_edges): New function.
        * tree-ssa-math-opts.c (convert_mult_to_fma_1): Use the
        gimple_build interface and use follow_all_ssa_edges to fold the result.
        (convert_mult_to_fma): Use direct_internal_fn_suppoerted_p
        instead of checking for optabs directly.
        * config/i386/i386.c (ix86_add_stmt_cost): Recognize FMAs as calls
        rather than FMA_EXPRs.
        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Create a
        call to IFN_FMA instead of an FMA_EXPR.

2018-05-17  Jim Wilson  <jimw@sifive.com>

        * expr.c (do_tablejump): When converting index to Pmode, if we have a
        sign extended promoted subreg, and the range does not have the sign bit
        set, then do a sign extend.

        * config/riscv/riscv.c (riscv_extend_comparands): In unsigned QImode
        test, check for sign extended subreg and/or constant operands, and
        do a sign extend in that case.

2018-05-17  Steve Ellcey  <sellcey@cavium.com>

        * config/aarch64/thunderx2t99.md (thunderx2t99_ls_both): Delete.
        (thunderx2t99_multiple): Delete psuedo-units from used cpus.
        Add untyped.
        (thunderx2t99_alu_shift): Remove alu_shift_reg, alus_shift_reg.
        Change logics_shift_reg to logics_shift_imm.
        (thunderx2t99_fp_loadpair_basic): Delete.
        (thunderx2t99_fp_storepair_basic): Delete.
        (thunderx2t99_asimd_int): Add neon_sub and neon_sub_q types.
        (thunderx2t99_asimd_polynomial): Delete.
        (thunderx2t99_asimd_fp_simple): Add neon_fp_mul_s_scalar_q
        and neon_fp_mul_d_scalar_q.
        (thunderx2t99_asimd_fp_conv): Add *int_to_fp* types.
        (thunderx2t99_asimd_misc): Delete neon_dup and neon_dup_q.
        (thunderx2t99_asimd_recip_step): Add missing *sqrt* types.
        (thunderx2t99_asimd_lut): Add missing tbl types.
        (thunderx2t99_asimd_ext): Delete.
        (thunderx2t99_asimd_load1_1_mult): Delete.
        (thunderx2t99_asimd_load1_2_mult): Delete.
        (thunderx2t99_asimd_load1_ldp): New.
        (thunderx2t99_asimd_load1): New.
        (thunderx2t99_asimd_load2): Add missing *load2* types.
        (thunderx2t99_asimd_load3): New.
        (thunderx2t99_asimd_load4): New.
        (thunderx2t99_asimd_store1_1_mult): Delete.
        (thunderx2t99_asimd_store1_2_mult): Delete.
        (thunderx2t99_asimd_store2_mult): Delete.
        (thunderx2t99_asimd_store2_onelane): Delete.
        (thunderx2t99_asimd_store_stp): New.
        (thunderx2t99_asimd_store1): New.
        (thunderx2t99_asimd_store2): New.
        (thunderx2t99_asimd_store3): New.
        (thunderx2t99_asimd_store4): New.

2018-05-17  Jerome Lambourg  <lambourg@adacore.com>

        * config/arm/arm_cmse.h (cmse_nsfptr_create, cmse_is_nsfptr): Remove
        #include <stdint.h>.  Replace intptr_t with __INTPTR_TYPE__.

2018-05-17  Pat Haugen  <pthaugen@us.ibm.com>
            Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85698
        * config/rs6000/rs6000.c (rs6000_output_move_128bit): Check dest
        operand.

2018-05-17  Richard Biener  <rguenther@suse.de>

        * tree-ssa-dse.c (dse_classify_store): Fix iterator increment
        for pruning loop and prune defs feeding only already visited PHIs.

2018-05-17  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (vn_reference_lookup_3): Improve memset handling.

2018-05-17  Bin Cheng  <bin.cheng@arm.com>
            Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85793
        * tree-vect-stmts.c (vectorizable_load): Handle 1 element-wise load
        for VMAT_ELEMENTWISE.

2018-05-17  Richard Sandiford  <richard.sandiford@linaro.org>

        * internal-fn.h (lookup_internal_fn): Declare
        * internal-fn.c (lookup_internal_fn): New function.
        * gimple.c (gimple_build_call_from_tree): Handle calls to
        internal functions.
        * gimple-pretty-print.c (dump_gimple_call): Print "." before
        internal function names.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-ssa-scopedtables.c (expr_hash_elt::print): Likewise.

2018-05-17  Richard Sandiford  <richard.sandiford@linaro.org>

        * gimple-fold.h (gimple_build): Make the function forms take
        combined_fn rather than built_in_function.
        (gimple_simplify): Likewise.
        * gimple-match-head.c (gimple_simplify): Likewise.
        * gimple-fold.c (gimple_build): Likewise.
        * tree-vect-loop.c (get_initial_def_for_reduction): Use gimple_build
        rather than gimple_build_call_internal.
        (get_initial_defs_for_reduction): Likewise.
        (vect_create_epilog_for_reduction): Likewise.
        (vectorizable_live_operation): Likewise.

2018-05-17  Martin Liska  <mliska@suse.cz>

        * gimple-ssa-sprintf.c (format_directive): Do not use
        space in between 'G_' and '('.

2018-05-17  Jakub Jelinek  <jakub@redhat.com>

        PR target/85323
        * config/i386/i386.c (ix86_fold_builtin): Handle masked shifts
        even if the mask is not all ones.

        PR target/85323
        * config/i386/i386.c (ix86_fold_builtin): Fold shift builtins by
        vector.
        (ix86_gimple_fold_builtin): Likewise.

        PR target/85323
        * config/i386/i386.c: Include tree-vector-builder.h.
        (ix86_vector_shift_count): New function.
        (ix86_fold_builtin): Fold shift builtins by scalar count.
        (ix86_gimple_fold_builtin): Likewise.

        * config/i386/avx512fintrin.h (_mm512_set_epi16, _mm512_set_epi8,
        _mm512_setzero): New intrinsics.

2018-05-17  James Greenhalgh  <james.greenhalgh@arm.com>
            Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify
        code generation for cases where splatting a value is not useful.
        * simplify-rtx.c (simplify_ternary_operation): Simplify
        vec_merge across a vec_duplicate and a paradoxical subreg forming
        a vector mode to a vec_concat.

2018-05-17  Olga Makhotina  <olga.makhotina@intel.com>

        * config.gcc: Support "goldmont-plus".
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect
        "goldmont-plus".
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_GOLDMONT_PLUS.
        * config/i386/i386.c (m_GOLDMONT_PLUS): Define.
        (processor_target_table): Add "goldmont-plus".
        (PTA_GOLDMONT_PLUS): Define.
        (ix86_lea_outperforms): Add TARGET_GOLDMONT_PLUS.
        (get_builtin_code_for_version): Handle PROCESSOR_GOLDMONT_PLUS.
        (fold_builtin_cpu): Add M_INTEL_GOLDMONT_PLUS.
        (fold_builtin_cpu): Add "goldmont-plus".
        (ix86_add_stmt_cost): Add TARGET_GOLDMONT_PLUS.
        (ix86_option_override_internal): Add "goldmont-plus".
        * config/i386/i386.h (processor_costs): Define TARGET_GOLDMONT_PLUS.
        (processor_type): Add PROCESSOR_GOLDMONT_PLUS.
        * config/i386/x86-tune.def: Add m_GOLDMONT_PLUS.
        * doc/invoke.texi: Add goldmont-plus as x86 -march=/-mtune= CPU type.

2018-05-17  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85757
        * tree-ssa-dse.c (dse_classify_store): Record a PHI def and
        remove defs that only feed that PHI from further processing.

2018-05-16  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.md (<optab>si3_mask, <optab>si3_mask_1): Prepend
        asterisk to name.
        (<optab>di3_mask, <optab>di3_mask_1): Likewise.

2018-05-16  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (count_index_strings): New function.
        (output_indirect_strings): Call count_index_strings and generate
        header for dwarf_version >= 5.

2018-05-16  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (dwarf_FORM): New function.
        (set_indirect_string): Use dwarf_FORM.
        (reset_indirect_string): Likewise.
        (size_of_die): Likewise.
        (value_format): Likewise.
        (output_die): Likewise.
        (add_skeleton_AT_string): Likewise.
        (output_macinfo_op): Likewise.
        (index_string): Likewise.
        (output_index_string_offset): Likewise.
        (output_index_string): Likewise.
        (count_index_strings): Likewise.

2018-05-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000.md (prefetch): Generate ISA 2.06 instructions
        dcbt and dcbtstt with TH=16 if operands[2] is 0 and Power 8 or newer.

2018-05-16  Martin Jambor  <mjambor@suse.cz>

        * ipa-prop.c (ipa_free_all_edge_args): Remove.
        * ipa-prop.h (ipa_free_all_edge_args): Likewise.

2018-05-16  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.md (fma<mode>4): Change into expand pattern.
        (fnma<mode>4): Likewise.
        (fms<mode>4): Likewise.
        (fnms<mode>4): Likewise.
        (aarch64_fma<mode>4): Rename insn, reorder accumulator operand.
        (aarch64_fnma<mode>4): Likewise.
        (aarch64_fms<mode>4): Likewise.
        (aarch64_fnms<mode>4): Likewise.
        (aarch64_fnmadd<mode>4): Likewise.

2018-05-16  Jason Merrill  <jason@redhat.com>

        * tree.c (warn_deprecated_use): Return bool.  Simplify logic.

2018-05-16  Richard Biener  <rguenther@suse.de>

        * tree-vectorizer.h (struct stmt_info_for_cost): Add where member.
        (dump_stmt_cost): Declare.
        (add_stmt_cost): Dump cost we add.
        (add_stmt_costs): New function.
        (vect_model_simple_cost, vect_model_store_cost, vect_model_load_cost):
        No longer exported.
        (vect_analyze_stmt): Adjust prototype.
        (vectorizable_condition): Likewise.
        (vectorizable_live_operation): Likewise.
        (vectorizable_reduction): Likewise.
        (vectorizable_induction): Likewise.
        * tree-vect-loop.c (vect_analyze_loop_operations): Create local
        cost vector to pass to vectorizable_ and record afterwards.
        (vect_model_reduction_cost): Take cost vector argument and adjust.
        (vect_model_induction_cost): Likewise.
        (vectorizable_reduction): Likewise.
        (vectorizable_induction): Likewise.
        (vectorizable_live_operation): Likewise.
        * tree-vect-slp.c (vect_create_new_slp_node): Initialize
        SLP_TREE_NUMBER_OF_VEC_STMTS.
        (vect_analyze_slp_cost_1): Remove.
        (vect_analyze_slp_cost): Likewise.
        (vect_slp_analyze_node_operations): Take visited args and
        a target cost vector.  Avoid processing already visited stmt sets.
        (vect_slp_analyze_operations): Use a local cost vector to gather
        costs and register those of non-discarded instances.
        (vect_bb_vectorization_profitable_p): Use add_stmt_costs.
        (vect_schedule_slp_instance): Remove copying of
        SLP_TREE_NUMBER_OF_VEC_STMTS.  Instead assert that it is not
        zero.
        * tree-vect-stmts.c (record_stmt_cost): Remove path directly
        adding cost.  Record cost entry location.
        (vect_prologue_cost_for_slp_op): Function to compute cost of
        a constant or invariant generated for SLP vect in the prologue,
        split out from vect_analyze_slp_cost_1.
        (vect_model_simple_cost): Make static.  Adjust for SLP costing.
        (vect_model_promotion_demotion_cost): Likewise.
        (vect_model_store_cost): Likewise, make static.
        (vect_model_load_cost): Likewise.
        (vectorizable_bswap): Add cost vector arg and adjust.
        (vectorizable_call): Likewise.
        (vectorizable_simd_clone_call): Likewise.
        (vectorizable_conversion): Likewise.
        (vectorizable_assignment): Likewise.
        (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        (vectorizable_condition): Likewise.
        (vectorizable_comparison): Likewise.
        (can_vectorize_live_stmts): Likewise.
        (vect_analyze_stmt): Likewise.
        (vect_transform_stmt): Adjust calls to vectorizable_*.
        * tree-vectorizer.c: Include gimple-pretty-print.h.
        (dump_stmt_cost): New function.

2018-05-16  Richard Biener  <rguenther@suse.de>

        * params.def (PARAM_DSE_MAX_ALIAS_QUERIES_PER_STORE): New param.
        * doc/invoke.texi (dse-max-alias-queries-per-store): Document.
        * tree-ssa-dse.c: Include tree-ssa-loop.h.
        (check_name): New callback.
        (dse_classify_store): Track cycles via a visited bitmap of PHI
        defs and simplify handling of in-loop and across loop dead stores
        and properly fail for loop-variant refs.  Handle byte-tracking with
        multiple defs.  Use PARAM_DSE_MAX_ALIAS_QUERIES_PER_STORE for
        limiting the walk.

2018-05-16  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vectorizer.h (vect_get_vector_types_for_stmt): Declare.
        (vect_get_mask_type_for_stmt): Likewise.
        * tree-vect-slp.c (vect_two_operations_perm_ok_p): New function,
        split out from...
        (vect_build_slp_tree_1): ...here.  Use vect_get_vector_types_for_stmt
        to determine the statement's vector type and the vector type that
        should be used for calculating nunits.  Deal with cases in which
        the type has to be deferred.
        (vect_slp_analyze_node_operations): Use vect_get_vector_types_for_stmt
        and vect_get_mask_type_for_stmt to calculate STMT_VINFO_VECTYPE.
        * tree-vect-loop.c (vect_determine_vf_for_stmt_1)
        (vect_determine_vf_for_stmt): New functions, split out from...
        (vect_determine_vectorization_factor): ...here.
        * tree-vect-stmts.c (vect_get_vector_types_for_stmt)
        (vect_get_mask_type_for_stmt): New functions, split out from
        vect_determine_vectorization_factor.

2018-05-16  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (verify_gimple_assign_ternary): Properly
        verify the [VEC_]COND_EXPR embedded comparison.

2018-05-15  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/85753
        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Handle
        RECORD_TYPE in addition to ARRAY_TYPE.

2018-05-15  Martin Sebor  <msebor@redhat.com>

        PR middle-end/85643
        * calls.c (get_attr_nonstring_decl): Handle MEM_REF.

2018-05-15  Richard Biener  <rguenther@suse.de>

        * tree-ssa-dse.c (dse_classify_store): Remove use_stmt parameter,
        add by_clobber_p one.  Change algorithm to collect all defs
        representing uses we need to walk and try reducing them to
        a single one before failing.
        (dse_dom_walker::dse_optimize_stmt): Adjust.

2018-05-13  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (dwarf_OP): Handle DW_OP_addrx and DW_OP_constx.
        (size_of_loc_descr): Likewise.
        (output_loc_operands): Likewise.
        (output_loc_operands_raw): Likewise.
        (dw_addr_op): Use dwarf_OP () for DW_OP_constx and DW_OP_addrx.
        (resolve_addr_in_expr): Handle DW_OP_addrx and DW_OP_constx.
        (hash_loc_operands): Likewise.
        (compare_loc_operands): Likewise.

2018-05-14  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (count_index_addrs): New function.
        (dwarf2out_finish): Use count_index_addrs to calculate addrs_length.

2018-05-15  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/83648
        * ipa-pure-const.c (malloc_candidate_p): Allow function with NULL
        return value as malloc candidate.

2018-05-15  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR ipa/85734
        * ipa-pure-const.c (warn_function_malloc): Pass value of known_finite
        param as true in call to suggest_attribute.

2018-05-14  Segher Boessenkool  <segher@kernel.crashing.org>

        * doc/invoke.texi (RS/6000 and PowerPC Options): Delete @itemx for
        -mreadonly-in-sdata.

2018-05-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (*aarch64_crypto_aese_fused):
        New pattern.
        (aarch64_crypto_aesd_fused): Likewise.

2018-05-14  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.md (mov<mode>): Remove '*' in alternatives.
        (movsi_aarch64): Likewise.
        (load_pairsi): Likewise.
        (load_pairdi): Likewise.
        (store_pairsi): Likewise.
        (store_pairdi): Likewise.
        (load_pairsf): Likewise.
        (load_pairdf): Likewise.
        (store_pairsf): Likewise.
        (store_pairdf): Likewise.
        (zero_extend): Likewise.
        (trunc): Swap alternatives.
        (fcvt_target): Add '?' to prefer w over r.

2018-05-14  Jakub Jelinek  <jakub@redhat.com>

        PR target/85756
        * config/i386/i386.md: Disallow non-commutative arithmetics in
        last twpeephole for mem {+,-,&,|,^}= x; mem != 0 after cmpelim
        optimization.  Use COMMUTATIVE_ARITH_P test rather than != MINUS
        in the peephole2 before it.

2018-05-14  Sebastian Peryt  <sebastian.peryt@intel.com>

        * common/config/i386/i386-common.c (OPTION_MASK_ISA_CLDEMOTE_SET,
        OPTION_MASK_ISA_CLDEMOTE_UNSET): New defines.
        (ix86_handle_option): Handle -mcldemote.
        * config.gcc: New header.
        * config/i386/cldemoteintrin.h: New file.
        * config/i386/cpuid.h (bit_CLDEMOTE): New bit.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect
        -mcldemote.
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        OPTION_MASK_ISA_CLDEMOTE.
        * config/i386/i386.c (ix86_target_string): Add -mcldemote.
        (ix86_valid_target_attribute_inner_p): Ditto.
        (enum ix86_builtins): Add IX86_BUILTIN_CLDEMOTE.
        (ix86_init_mmx_sse_builtins): Define __builtin_ia32_cldemote.
        (ix86_expand_builtin): Expand IX86_BUILTIN_CLDEMOTE.
        * config/i386/i386.h (TARGET_CLDEMOTE, TARGET_CLDEMOTE_P): New.
        * config/i386/i386.md (UNSPECV_CLDEMOTE): New.
        (cldemote): New.
        * config/i386/i386.opt: Add -mcldemote.
        * config/i386/x86intrin.h: New header.
        * doc/invoke.texi: Add -mcldemote.

2018-05-14  Richard Biener  <rguenther@suse.de>

        * doc/match-and-simplify.texi: Adjust :s documentation.

2018-05-14  Alexander Monakov  <amonakov@ispras.ru>

        * sort.cc (REORDER_23): Pass the type for the temporaries instead of
        intended memcpy size.
        (REORDER_45): Likewise.

2018-05-13  Alexander Monakov  <amonakov@ispras.ru>

        * sort.cc: New file.
        * system.h [!CHECKING_P] (qsort): Redirect to gcc_qsort.
        * vec.c (qsort_chk): Use gcc_qsort.
        * Makefile.in (OBJS-libcommon): Add sort.o.
        (build/sort.o): New target.  Use it...
        (BUILD_RTL): ... here, and...
        (build/gencfn-macros): ... here, and...
        (build/genmatch): ... here.

2018-05-13  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n15 is valid to --with-cpu.
        * config/nds32/nds32-graywolf.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_GRAYWOLF.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n15
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n15 pipeline.
        * config/nds32/nds32-utils.c: More implementations for n15 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add graywolf.
        * config/nds32/nds32.opt (mcpu): Support n15 pipeline cpus.
        * config/nds32/pipelines.md: Include n15 settings.

2018-05-13  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n12/n13 are valid to --with-cpu.
        * config/nds32/nds32-n13.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N12 and CPU_N13.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n12/n13
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n12/n13 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add n13.
        * config/nds32/nds32.opt (mcpu): Support n12/n13 pipeline cpus.
        * config/nds32/pipelines.md: Include n13 settings.

2018-05-13  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n10/d10 are valid to --with-cpu.
        * config/nds32/nds32-n10.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N10.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n10
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n10 pipeline.
        * config/nds32/nds32-utils.c: More implementations for n10 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add n10.
        * config/nds32/nds32.opt (mcpu): Support n10 pipeline cpus.
        * config/nds32/pipelines.md: Include n10 settings.

2018-05-13  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32be-*-*): Handle --with-ext-dsp.
        * config/nds32/constants.md (unspec_element, unspec_volatile_element):
        Add enum values for DSP extension instructions.
        * config/nds32/constraints.md (Iu06, IU06, CVp5, CVs5, CVs2, CVhi):
        New constraints.
        * config/nds32/iterators.md (shifts, shiftrt, sat_plus, all_plus,
        sat_minus, all_minus, plus_minus, extend, sumax, sumin, sumin_max):
        New code iterators.
        (su, zs, uk, opcode, add_rsub, add_sub): New code attributes.
        * config/nds32/nds32-dspext.md: New file for DSP implementation.
        * config/nds32/nds32-intrinsic.c: Implementation of DSP extension.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32-md-auxiliary.c: Likewise.
        * config/nds32/nds32-memory-manipulation.c: Consider DSP extension.
        * config/nds32/nds32-predicates.c (const_vector_to_hwint): New.
        (nds32_valid_CVp5_p, nds32_valid_CVs5_p): New.
        (nds32_valid_CVs2_p, nds32_valid_CVhi_p): New.
        * config/nds32/nds32-protos.h: New declarations for DSP extension.
        * config/nds32/nds32-utils.c (extract_mac_non_acc_rtx): New case
        TYPE_DMAC in switch statement.
        * config/nds32/nds32.c: New checking and implementation for DSP
        extension instructions.
        * config/nds32/nds32.h: Likewise.
        * config/nds32/nds32.md: Likewise.
        * config/nds32/nds32.opt (mhw-abs, mext-dsp): New options.
        * config/nds32/predicates.md: Implement new predicates for DSP
        extension.

2018-05-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (mov<mode>_softfloat, FMOVE32):
        Reformat alternatives and attributes so it is easier to identify
        which constraints/attributes go with which instruction.
        (mov<mode>_hardfloat32, FMOVE64): Likewise.
        (mov<mode>_softfloat32, FMOVE64): Likewise.
        (mov<mode>_hardfloat64, FMOVE64): Likewise.
        (mov<mode>_softfloat64, FMOVE64): Likewise.

2018-05-11  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC Built-in Functions): Rename this
        subsection.
        (Basic PowerPC Built-in Functions): The new name of the
        subsection previously known as "PowerPC Built-in Functions".
        (Basic PowerPC Built-in Functions Available on all Configurations):
        New subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.05): Likewise.
        (Basic PowerPC Built-in Functions Available on ISA 2.06): Likewise.
        (Basic PowerPC Built-in Functions Available on ISA 2.07): Likewise.
        (Basic PowerPC Built-in Functions Available on ISA 3.0): Likewise.

2018-05-11  Martin Jambor  <mjambor@suse.cz>

        PR ipa/85655
        * ipa-cp.c (intersect_with_plats): Check that the lattice contains
        single const.

2018-05-11  Richard Earnshaw  <rearnsha@arm.com>

        PR target/85733
        * config/arm/arm-cpus.in (fgroup ARMv6m): Add be8 feature.

2018-05-11  Sebastian Peryt  <sebastian.peryt@intel.com>

        * common/config/i386/i386-common.c (OPTION_MASK_ISA_WAITPKG_SET,
        OPTION_MASK_ISA_WAITPKG_UNSET): New defines.
        (ix86_handle_option): Handle -mwaitpkg.
        * config.gcc: New header.
        * config/i386/cpuid.h (bit_WAITPKG): New bit.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect -mwaitpkg.
        * config/i386/i386-builtin-types.def ((UINT8, UNSIGNED, UINT64)): New
        function type.
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        OPTION_MASK_ISA_WAITPKG.
        * config/i386/i386.c (ix86_target_string): Add -mwaitpkg.
        (ix86_option_override_internal): Add PTA_WAITPKG.
        (ix86_valid_target_attribute_inner_p): Add -mwaitpkg.
        (enum ix86_builtins): Add IX86_BUILTIN_UMONITOR, IX86_BUILTIN_UMWAIT,
        IX86_BUILTIN_TPAUSE.
        (ix86_init_mmx_sse_builtins): Define __builtin_ia32_umonitor,
        __builtin_ia32_umwait and __builtin_ia32_tpause.
        (ix86_expand_builtin): Expand IX86_BUILTIN_UMONITOR,
        IX86_BUILTIN_UMWAIT, IX86_BUILTIN_TPAUSE.
        * config/i386/i386.h (TARGET_WAITPKG, TARGET_WAITPKG_P): New.
        * config/i386/i386.md (UNSPECV_UMWAIT, UNSPECV_UMONITOR,
        UNSPECV_TPAUSE): New.
        (umwait, umwait_rex64, umonitor_<mode>, tpause, tpause_rex64): New.
        * config/i386/i386.opt: Add -mwaitpkg.
        * config/i386/waitpkgintrin.h: New file.
        * config/i386/x86intrin.h: New header.
        * doc/invoke.texi: Add -mwaitpkg.

2018-05-11  Richard Earnshaw  <rearnsha@arm.com>

        PR target/85606
        * config/arm/arm-cpus.in: Add comment that ARMv6-m and ARMv6S-m are now
        equivalent.
        (cortex-m0): Use armv6s-m isa.
        (cortex-m0plus): Likewise.
        (cortex-m1): Likewise.
        (cortex-m0.small-multiply): Likewise.
        (cortex-m0plus.small-multiply): Likewise.
        (cortex-m1.small-multiply): Likewise.

2018-05-11  Allan Sandfeld Jensen  <allan.jensen@qt.io>
            Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85692
        * tree-ssa-forwprop.c (simplify_vector_constructor): Try two
        source permute as well.

2018-05-11  Martin Liska  <mliska@suse.cz>

        PR sanitizer/85556
        * doc/extend.texi: Document LLVM style format for no_sanitize
        attribute.

2018-05-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (mode_supports_dq_form): Rename
        mode_supports_vsx_dform_quad to mode_supports_dq_form.
        (mode_supports_vsx_dform_quad): Likewise.
        (mode_supports_vmx_dform): Move these functions to be next to the
        other mode_supports functions.
        (mode_supports_dq_form): Likewise.
        (quad_address_p): Change calls of mode_supports_vsx_dform_quad to
        mode_supports_dq_form.
        (reg_offset_addressing_ok_p): Likewise.
        (offsettable_ok_by_alignment): Likewise.
        (rs6000_legitimate_offset_address_p): Likewise.
        (legitimate_lo_sum_address_p): Likewise.
        (rs6000_legitimize_address): Likewise.
        (rs6000_legitimize_reload_address): Likewise.
        (rs6000_secondary_reload_inner): Likewise.
        (rs6000_preferred_reload_class): Likewise.
        (rs6000_output_move_128bit): Likewise.

2018-05-10  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (ix86_expand_builtin) <case IX86_BUILTIN_RDPID>:
        Generate SImode target register for null target.
        <case IX86_BUILTIN_XGETBV>: Ditto.
        <case IX86_BUILTIN_XSETBV>: Optimize LSHIFTRT generation.
        * config/i386/xsaveintrin.h (_xgetbv): Add missing return.

2018-05-10  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000.md (prefetch): Generate ISA 2.06 instructions
        dcbtt and dcbtstt if operands[2] is 0.

2018-05-10  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85693
        * config/i386/sse.md (usadv64qi): New expander.

2018-05-10  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md (altivec_vmrghb, altivec_vmrghh,
        altivec_vmrghw, altivec_vmrglb, altivec_vmrglh, altivec_vmrglw): Remove
        -maltivec=be support.
        (vec_widen_umult_even_v16qi, vec_widen_smult_even_v16qi,
        vec_widen_umult_even_v8hi, vec_widen_smult_even_v8hi,
        vec_widen_umult_even_v4si, vec_widen_smult_even_v4si,
        vec_widen_umult_odd_v16qi, vec_widen_smult_odd_v16qi,
        vec_widen_umult_odd_v8hi, vec_widen_smult_odd_v8hi,
        vec_widen_umult_odd_v4si, vec_widen_smult_odd_v4si, altivec_vpkpx,
        altivec_vpks<VI_char>ss, altivec_vpks<VI_char>us,
        altivec_vpku<VI_char>us, altivec_vpku<VI_char>um, altivec_vsum2sws,
        altivec_vsumsws): Adjust.
        (altivec_vspltb *altivec_vspltb_internal, altivec_vsplth,
        *altivec_vsplth_internal, altivec_vspltw, *altivec_vspltw_internal,
        altivec_vspltsf, *altivec_vspltsf_internal): Remove -maltivec=be
        support.
        (altivec_vperm_<mode>, altivec_vperm_<mode>_uns,
        altivec_vupkhs<VU_char>, altivec_vupkls<VU_char>, altivec_vupkhpx,
        altivec_vupklpx, altivec_lvsl, altivec_lvsr): Adjust.
        (altivec_lve<VI_char>x): Delete expand.
        (*altivec_lve<VI_char>x_internal): Rename to...
        (altivec_lve<VI_char>x): ... this.
        (altivec_lvxl_<mode>): Delete expand.
        (*altivec_lvxl_<mode>_internal): Rename to ...
        (altivec_lvxl_<mode>): ... this.
        (altivec_stvxl_<mode>): Delete expand.
        (*altivec_stvxl_<mode>_internal): Rename to ...
        (altivec_stvxl_<mode>): ... this.
        (altivec_stve<VI_char>x): Delete expand.
        (*altivec_stve<VI_char>x_internal): Rename to ...
        (altivec_stve<VI_char>x): ... this.
        (doublee<mode>2, unsdoubleev4si2, doubleo<mode>2, unsdoubleov4si2,
        doubleh<mode>2, unsdoublehv4si2, doublel<mode>2, unsdoublelv4si2,
        reduc_plus_scal_<mode>): Adjust.
        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Adjust
        comment.
        (rs6000_cpu_cpp_builtins): Adjust.
        (altivec_resolve_overloaded_builtin): Remove -maltivec=be support.
        * config/rs6000/rs6000-protos.h (altivec_expand_lvx_be,
        altivec_expand_stvx_be, altivec_expand_stvex_be): Delete.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Remove
        -maltivec=be support.
        (rs6000_split_vec_extract_var): Adjust.
        (rs6000_split_v4si_init): Adjust.
        (swap_selector_for_mode): Delete.
        (altivec_expand_lvx_be, altivec_expand_stvx_be,
        altivec_expand_stvex_be): Delete.
        (altivec_expand_lv_builtin, altivec_expand_stv_builtin): Remove
        -maltivec=be support.
        (rs6000_gimple_fold_builtin): Ditto.
        (rs6000_generate_float2_double_code, rs6000_generate_float2_code):
        Adjust.
        * config/rs6000/rs6000.h (VECTOR_ELT_ORDER_BIG): Delete.
        (TARGET_DIRECT_MOVE_64BIT): Adjust.
        * config/rs6000/rs6000.md (split for extendsidi2 for vectors): Adjust.
        * config/rs6000/rs6000.opt (maltivec=le, maltivec=be): Delete.
        * config/rs6000/vsx.md (floate<mode>, unsfloatev2di, floato<mode>,
        unsfloatov2di, vsignedo_v2df, vsignede_v2df, vunsignedo_v2df,
        vunsignede_v2df, vsx_extract_<mode>_p9, *vsx_extract_si,
        *vsx_extract_<mode>_p8, *vsx_extract_si_<uns>float_df,
        *vsx_extract_si_<uns>float_<mode>, vsx_set_<mode>_p9, vsx_set_v4sf_p9,
        *vsx_insert_extract_v4sf_p9, *vsx_insert_extract_v4sf_p9_2, and an
        anonymous split): Adjust.
        (vsx_mergel_<mode>, vsx_mergeh_<mode>): Remove -maltivec=be support.
        (vsx_xxspltd_<mode>, extract4b, insert4b): Adjust.

2018-05-10  Eric Botcazou  <ebotcazou@adacore.com>

        * configure.ac (gcc_gxx_include_dir_add_sysroot): Set it to 1 only
        when --with-gxx-include-dir is also specified.
        * configure: Regenerate.

2018-05-09  Jim Wilson  <jimw@sifive.com>

        PR target/84797
        * config.gcc (riscv*-*-*): Handle --with-multilib-list.
        * config/riscv/t-withmultilib: New.
        * config/riscv/withmultilib.h: New.
        * doc/install.texi: Document RISC-V --with-multilib-list support.

2018-05-09  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_bb_slp_scalar_cost): Fill a cost
        vector.
        (vect_bb_vectorization_profitable_p): Adjust.  Compute
        actual scalar cost using the cost vector and the add_stmt_cost
        machinery.

2018-05-09  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85645
        * config/rs6000/rs6000.c (rs6000_emit_prologue_components): Put a SET
        in the REG_CFA_REGISTER note for LR, don't leave it empty.

2018-05-09  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85645
        * shrink-wrap.c (spread_components): Return a boolean saying if
        anything was changed.
        (try_shrink_wrapping_separate): Iterate spread_components until
        nothing changes anymore.

2018-05-09  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85645
        * regrename.c (build_def_use): Also kill the chains that include the
        destination of a REG_CFA_REGISTER note.

2018-05-09  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85645
        *  regcprop.c (copyprop_hardreg_forward_1): Don't propagate into an
        insn that has a REG_CFA_REGISTER note.

2018-05-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * cfgexpand.c (expand_clobber): New function.
        (expand_gimple_stmt_1): Use it.
        * tree-vect-stmts.c (vect_clobber_variable): New function,
        split out from...
        (vectorizable_simd_clone_call): ...here.
        (vectorizable_store): Emit a clobber either side of an
        IFN_STORE_LANES sequence.
        (vectorizable_load): Emit a clobber after an IFN_LOAD_LANES sequence.

2018-05-09  Tom de Vries  <tom@codesourcery.com>

        PR target/85626
        * config/nvptx/nvptx.md (define_insn "trap", define_insn "trap_if_true")
        (define_insn "trap_if_false"): Add exit after trap.

2018-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/85638
        * bb-reorder.c: Include common/common-target.h.
        (create_forwarder_block): New function extracted from...
        (fix_up_crossing_landing_pad): ...here.  Rename into...
        (dw2_fix_up_crossing_landing_pad): ...this.
        (sjlj_fix_up_crossing_landing_pad): New function.
        (find_rarely_executed_basic_blocks_and_crossing_edges): In SJLJ mode,
        call sjlj_fix_up_crossing_landing_pad if there are incoming EH edges
        from both partitions and exit the loop after one iteration.

2018-05-08  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        Revert:
        * doc/extend.texi (PowerPC Built-in Functions): Rename this
        subsection.
        (Basic PowerPC Built-in Functions): The new name of the
        subsection previously known as "PowerPC Built-in Functions".
        (Basic PowerPC Built-in Functions Available on all Configurations):
        New subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.05): New
        subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.06): New
        subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.07): New
        subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 3.0): New
        subsubsection.

2018-05-08  Jim Wilson  <jimw@sifive.com>

        * config/riscv/linux.h (MUSL_ABI_SUFFIX): Delete unnecessary backslash.
        (LD_EMUL_SUFFIX): New.
        (LINK_SPEC): Use it.

2018-05-08  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * doc/extend.texi (PowerPC Built-in Functions): Rename this
        subsection.
        (Basic PowerPC Built-in Functions): The new name of the
        subsection previously known as "PowerPC Built-in Functions".
        (Basic PowerPC Built-in Functions Available on all Configurations):
        New subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.05): New
        subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.06): New
        subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 2.07): New
        subsubsection.
        (Basic PowerPC Built-in Functions Available on ISA 3.0): New
        subsubsection.

2018-05-08  Jakub Jelinek  <jakub@redhat.com>

        PR target/85683
        * config/i386/i386.md: Add peepholes for mem {+,-,&,|,^}= x; mem != 0
        after cmpelim optimization.

2018-05-08  Olga Makhotina  <olga.makhotina@intel.com>

        * config.gcc: Support "goldmont".
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect "goldmont".
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_GOLDMONT.
        * config/i386/i386.c (m_GOLDMONT): Define.
        (processor_target_table): Add "goldmont".
        (PTA_GOLDMONT): Define.
        (ix86_lea_outperforms): Add TARGET_GOLDMONT.
        (get_builtin_code_for_version): Handle PROCESSOR_GOLDMONT.
        (fold_builtin_cpu): Add M_INTEL_GOLDMONT.
        (fold_builtin_cpu): Add "goldmont".
        (ix86_add_stmt_cost): Add TARGET_GOLDMONT.
        (ix86_option_override_internal): Add "goldmont".
        * config/i386/i386.h (processor_costs): Define TARGET_GOLDMONT.
        (processor_type): Add PROCESSOR_GOLDMONT.
        * config/i386/i386.md: Add CPU "glm".
        * config/i386/glm.md: New file.
        * config/i386/x86-tune.def: Add m_GOLDMONT.
        * doc/invoke.texi: Add goldmont as x86 -march=/-mtune= CPU type.

2018-05-08  Jakub Jelinek  <jakub@redhat.com>

        PR target/85572
        * config/i386/i386.c (ix86_expand_sse2_abs): Handle E_V2DImode and
        E_V4DImode.
        * config/i386/sse.md (abs<mode>2): Use VI_AVX2 iterator instead of
        VI1248_AVX512VL_AVX512BW.  Handle V2DImode and V4DImode if not
        TARGET_AVX512VL using ix86_expand_sse2_abs.  Formatting fixes.

        PR target/85317
        * config/i386/i386.c (ix86_fold_builtin): Handle
        IX86_BUILTIN_{,P}MOVMSK{PS,PD,B}{,128,256}.

        PR target/85480
        * config/i386/sse.md (ssequaterinsnmode): New mode attribute.
        (*<extract_type>_vinsert<shuffletype><extract_suf>_0): New pattern.

2018-05-08  Richard Earnshaw  <rearnsha@arm.com>

        PR target/85658
        * config/arm/parsecpu.awk (check_cpu): Fix operator precedence.
        (check_arch): Likewise.
        (check_fpu): Return the result rather than printing it.
        (end arch): Fix operator precedence.
        (end cpu): Likewise.
        (END): Print the result from check_fpu.

2018-05-08  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-sve.md (*pred_cmp<cmp_op><mode>_combine)
        (*pred_cmp<cmp_op><mode>, *fcm<cmp_op><mode>_and_combine)
        (*fcmuo<mode>_and_combine, *fcm<cmp_op><mode>_and)
        (*fcmuo<mode>_and): New patterns.

2018-05-08  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/iterators.md (UNSPEC_COND_LO, UNSPEC_COND_LS)
        (UNSPEC_COND_HI, UNSPEC_COND_HS, UNSPEC_COND_UO): Delete.
        (SVE_INT_CMP, SVE_FP_CMP): New code iterators.
        (cmp_op, sve_imm_con): New code attributes.
        (SVE_COND_INT_CMP, imm_con): Delete.
        (cmp_op): Remove above unspecs from int attribute.
        * config/aarch64/aarch64-sve.md (*vec_cmp<cmp_op>_<mode>): Rename
        to...
        (*cmp<cmp_op><mode>): ...this.  Use UNSPEC_MERGE_PTRUE instead of
        comparison-specific unspecs.
        (*vec_cmp<cmp_op>_<mode>_ptest): Rename to...
        (*cmp<cmp_op><mode>_ptest): ...this and adjust likewise.
        (*vec_cmp<cmp_op>_<mode>_cc): Rename to...
        (*cmp<cmp_op><mode>_cc): ...this and adjust likewise.
        (*vec_fcm<cmp_op><mode>): Rename to...
        (*fcm<cmp_op><mode>): ...this and adjust likewise.
        (*vec_fcmuo<mode>): Rename to...
        (*fcmuo<mode>): ...this and adjust likewise.
        (*pred_fcm<cmp_op><mode>): New pattern.
        * config/aarch64/aarch64.c (aarch64_emit_unop, aarch64_emit_binop)
        (aarch64_emit_sve_ptrue_op, aarch64_emit_sve_ptrue_op_cc): New
        functions.
        (aarch64_unspec_cond_code): Remove handling of LTU, GTU, LEU, GEU
        and UNORDERED.
        (aarch64_gen_unspec_cond, aarch64_emit_unspec_cond): Delete.
        (aarch64_emit_sve_predicated_cond): New function.
        (aarch64_expand_sve_vec_cmp_int): Use aarch64_emit_sve_ptrue_op_cc.
        (aarch64_emit_unspec_cond_or): Replace with...
        (aarch64_emit_sve_or_conds): ...this new function.  Use
        aarch64_emit_sve_ptrue_op for the individual comparisons and
        aarch64_emit_binop to OR them together.
        (aarch64_emit_inverted_unspec_cond): Replace with...
        (aarch64_emit_sve_inverted_cond): ...this new function.  Use
        aarch64_emit_sve_ptrue_op for the comparison and
        aarch64_emit_unop to invert the result.
        (aarch64_expand_sve_vec_cmp_float): Update after the above
        changes.  Use aarch64_emit_sve_ptrue_op for native comparisons.

2018-05-07  Nathan Sidwell  <nathan@acm.org>

        * doc/invoke.texi (C++ Dialect Options): Remove -ffor-scope.
        * doc/extend.texi (Deprecated Features): Remove -fno-for-scope
        (Backwards Compatibility): Likewise.

2018-05-07  Luis Machado  <luis.machado@linaro.org>

        PR bootstrap/85681
        Revert:
        2018-05-07  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64-protos.h (cpu_prefetch_tune)
        <prefetch_dynamic_strides>: New const bool field.
        * config/aarch64/aarch64.c (generic_prefetch_tune): Update to include
        prefetch_dynamic_strides.
        (exynosm1_prefetch_tune): Likewise.
        (thunderxt88_prefetch_tune): Likewise.
        (thunderx_prefetch_tune): Likewise.
        (thunderx2t99_prefetch_tune): Likewise.
        (qdf24xx_prefetch_tune): Likewise. Set prefetch_dynamic_strides
        to false.
        (aarch64_override_options_internal): Update to set
        PARAM_PREFETCH_DYNAMIC_STRIDES.
        * doc/invoke.texi (prefetch-dynamic-strides): Document new option.
        * params.def (PARAM_PREFETCH_DYNAMIC_STRIDES): New.
        * params.h (PARAM_PREFETCH_DYNAMIC_STRIDES): Define.
        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Account for
        prefetch-dynamic-strides setting.

        2018-05-07  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64-protos.h (cpu_prefetch_tune)
        <minimum_stride>: New const int field.
        * config/aarch64/aarch64.c (generic_prefetch_tune): Update to include
        minimum_stride field.
        (exynosm1_prefetch_tune): Likewise.
        (thunderxt88_prefetch_tune): Likewise.
        (thunderx_prefetch_tune): Likewise.
        (thunderx2t99_prefetch_tune): Likewise.
        (qdf24xx_prefetch_tune): Likewise. Set minimum_stride to 2048.
        (aarch64_override_options_internal): Update to set
        PARAM_PREFETCH_MINIMUM_STRIDE.
        * doc/invoke.texi (prefetch-minimum-stride): Document new option.
        * params.def (PARAM_PREFETCH_MINIMUM_STRIDE): New.
        * params.h (PARAM_PREFETCH_MINIMUM_STRIDE): Define.
        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Return false if
        stride is constant and is below the minimum stride threshold.

2018-05-07  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.c (qdf24xx_prefetch_tune) <l2_cache_size>: Set
        to 512.

2018-05-07  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64-protos.h (cpu_prefetch_tune)
        <prefetch_dynamic_strides>: New const bool field.
        * config/aarch64/aarch64.c (generic_prefetch_tune): Update to include
        prefetch_dynamic_strides.
        (exynosm1_prefetch_tune): Likewise.
        (thunderxt88_prefetch_tune): Likewise.
        (thunderx_prefetch_tune): Likewise.
        (thunderx2t99_prefetch_tune): Likewise.
        (qdf24xx_prefetch_tune): Likewise. Set prefetch_dynamic_strides
        to false.
        (aarch64_override_options_internal): Update to set
        PARAM_PREFETCH_DYNAMIC_STRIDES.
        * doc/invoke.texi (prefetch-dynamic-strides): Document new option.
        * params.def (PARAM_PREFETCH_DYNAMIC_STRIDES): New.
        * params.h (PARAM_PREFETCH_DYNAMIC_STRIDES): Define.
        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Account for
        prefetch-dynamic-strides setting.

2018-05-07  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64-protos.h (cpu_prefetch_tune)
        <minimum_stride>: New const int field.
        * config/aarch64/aarch64.c (generic_prefetch_tune): Update to include
        minimum_stride field.
        (exynosm1_prefetch_tune): Likewise.
        (thunderxt88_prefetch_tune): Likewise.
        (thunderx_prefetch_tune): Likewise.
        (thunderx2t99_prefetch_tune): Likewise.
        (qdf24xx_prefetch_tune): Likewise. Set minimum_stride to 2048.
        (aarch64_override_options_internal): Update to set
        PARAM_PREFETCH_MINIMUM_STRIDE.
        * doc/invoke.texi (prefetch-minimum-stride): Document new option.
        * params.def (PARAM_PREFETCH_MINIMUM_STRIDE): New.
        * params.h (PARAM_PREFETCH_MINIMUM_STRIDE): Define.
        * tree-ssa-loop-prefetch.c (should_issue_prefetch_p): Return false if
        stride is constant and is below the minimum stride threshold.

2018-05-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85659
        * cfgexpand.c (expand_asm_stmt): Don't create a temporary if
        the type is addressable.  Don't force op into register if it has
        BLKmode.

2018-05-05  Roland McGrath  <mcgrathr@google.com>

        PR other/77609
        * varasm.c (default_section_type_flags): Set SECTION_NOTYPE for
        any section for which we don't know a specific type it should have,
        regardless of name.  Previously this was done only for the exact
        names ".init_array", ".fini_array", and ".preinit_array".
        (default_elf_asm_named_section): Add comment about
        relationship with default_section_type_flags and SECTION_NOTYPE.
        (get_section): Don't consider it a type conflict if one side has
        SECTION_NOTYPE and the other doesn't, as long as neither has the
        SECTION_BSS et al used in the default_section_type_flags logic.

2018-05-05  Tom de Vries  <tom@codesourcery.com>

        PR target/85653
        * config/nvptx/nvptx.c (WORKAROUND_PTXJIT_BUG_3): Define.
        (workaround_barsyncs): New function.
        (nvptx_reorg): Use workaround_barsyncs.
        * config/nvptx/nvptx.md (define_c_enum "unspecv"): Add UNSPECV_MEMBAR.
        (define_expand "nvptx_membar_cta"): New define_expand.
        (define_insn "*nvptx_membar_cta"): New insn.

2018-05-04  Pekka Jääskeläinen  <pekka.jaaskelainen@parmance.com>

        * brig-builtins.def: Add consts to ptrs etc. in BRIG builtin defs.
        To improve optimization opportunities.
        * builtin-types.def: The new needed builtin types for the above.

2018-05-04  Richard Biener  <rguenther@suse.de>

        * bb-reorder.c (sanitize_hot_paths): Release hot_bbs_to_check.
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::output_merged_store): Remove redundant create,
        release split_store vector contents on failure.
        * tree-vect-slp.c (vect_schedule_slp_instance): Avoid leaking
        scalar stmt vector on cache hit.

2018-05-04  Segher Boessenkool  <segher@kernel.crashing.org>

        * common/config/rs6000/rs6000-common.c (rs6000_handle_option): Remove
        Xilinx FP support.
        * config.gcc (powerpc-xilinx-eabi*): Remove.
        * config/rs6000/predicates.md (easy_fp_constant): Remove Xilinx FP
        support.
        (fusion_addis_mem_combo_load): Ditto.
        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Remove Xilinx
        FP support.
        (rs6000_cpu_cpp_builtins): Ditto.
        * config/rs6000/rs6000-linux.c
        (rs6000_linux_float_exceptions_rounding_supported_p): Ditto.
        * config/rs6000/rs6000-opts.h (enum fpu_type_t): Delete.
        * config/rs6000/rs6000.c (rs6000_debug_reg_global): Remove Xilinx FP
        support.
        (rs6000_setup_reg_addr_masks): Ditto.
        (rs6000_init_hard_regno_mode_ok): Ditto.
        (rs6000_option_override_internal): Ditto.
        (legitimate_lo_sum_address_p): Ditto.
        (rs6000_legitimize_address): Ditto.
        (rs6000_legitimize_reload_address): Ditto.
        (rs6000_legitimate_address_p): Ditto.
        (abi_v4_pass_in_fpr): Ditto.
        (setup_incoming_varargs): Ditto.
        (rs6000_gimplify_va_arg): Ditto.
        (rs6000_split_multireg_move): Ditto.
        (rs6000_savres_strategy): Ditto.
        (rs6000_emit_prologue_components): Ditto.
        (rs6000_emit_epilogue_components): Ditto.
        (rs6000_emit_prologue): Ditto.
        (rs6000_emit_epilogue): Ditto.
        (rs6000_elf_file_end): Ditto.
        (rs6000_function_value): Ditto.
        (rs6000_libcall_value): Ditto.
        * config/rs6000/rs6000.h: Ditto.
        (TARGET_MINMAX_SF, TARGET_MINMAX_DF): Delete, merge to ...
        (TARGET_MINMAX): ... this.  New.
        (TARGET_SF_FPR, TARGET_DF_FPR, TARGET_SF_INSN, TARGET_DF_INSN): Delete.
        * config/rs6000/rs6000.md: Remove Xilinx FP support.
        (*movsi_internal1_single): Delete.
        * config/rs6000/rs6000.opt (msingle-float, mdouble-float, msimple-fpu,
        mfpu=, mxilinx-fpu): Delete.
        * config/rs6000/singlefp.h: Delete.
        * config/rs6000/sysv4.h: Remove Xilinx FP support.
        * config/rs6000/t-rs6000: Ditto.
        * config/rs6000/t-xilinx: Delete.
        * config/rs6000/titan.md: Adjust for fp_type removal.
        * config/rs6000/vsx.md: Remove Xilinx FP support.
        (VStype_simple): Delete.
        (VSfptype_simple, VSfptype_mul, VSfptype_div, VSfptype_sqrt): Delete.
        * config/rs6000/xfpu.h: Delete.
        * config/rs6000/xfpu.md: Delete.
        * config/rs6000/xilinx.h: Delete.
        * config/rs6000/xilinx.opt: Delete.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Remove
        -msingle-float, -mdouble-float, -msimple-fpu, -mfpu=, and -mxilinx-fpu.

2018-05-04  Tom de Vries  <tom@codesourcery.com>

        PR libgomp/85639
        * builtins.c (expand_builtin_goacc_parlevel_id_size): Handle null target
        if ignore == 0.

2018-05-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/85627
        * tree-complex.c (update_complex_assignment): We are always in SSA form.
        (expand_complex_div_wide): Likewise.
        (expand_complex_operations_1): Likewise.
        (expand_complex_libcall): Preserve EH info of the original stmt.
        (tree_lower_complex): Handle removed blocks.
        * tree.c (build_common_builtin_nodes): Do not set ECF_NOTRHOW
        on complex multiplication and division libcall builtins.

2018-05-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/85574
        * fold-const.c (negate_expr_p): Restrict negation of operand
        zero of a division to when we know that can happen without
        overflow.
        (fold_negate_expr_1): Likewise.

2018-05-04  Jakub Jelinek  <jakub@redhat.com>

        PR libstdc++/85466
        * real.h (real_nextafter): Declare.
        * real.c (real_nextafter): New function.
        * fold-const-call.c (fold_const_nextafter): New function.
        (fold_const_call_sss): Call it for CASE_CFN_NEXTAFTER and
        CASE_CFN_NEXTTOWARD.
        (fold_const_call_1): For CASE_CFN_NEXTTOWARD call fold_const_call_sss
        even when arg1_mode is different from arg0_mode.

2018-05-03  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Deprecated Features): Remove
        -ffriend-injection.
        (Backwards Compatibility): Likewise.
        * doc/invoke.texi (C++ Language Options): Likewise.
        (C++ Dialect Options): Likewise.

2018-05-03  Jakub Jelinek  <jakub@redhat.com>

        PR target/85530
        * config/i386/avx512fintrin.h (_mm512_mullox_epi64,
        _mm512_mask_mullox_epi64): New intrinsics.

2018-05-03  Tom de Vries  <tom@codesourcery.com>

        PR testsuite/85106
        * doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
        dump files): Add offload-tree.

2018-05-03  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85615
        * tree-ssa-threadupdate.c (thread_block_1): Only allow exits
        to loops not nested in BBs loop father to avoid creating multi-entry
        loops.

2018-05-03  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR tree-optimization/70291
        * tree-complex.c (expand_complex_libcall): Add type, inplace_p
        arguments.  Change return type to tree.  Emit libcall as a new
        statement rather than replacing existing one when inplace_p is true.
        (expand_complex_multiplication_components): New function.
        (expand_complex_multiplication): Expand floating-point complex
        multiplication using the above.
        (expand_complex_division): Rename inner_type parameter to type.
        Update expand_complex_libcall call-site.
        (expand_complex_operations_1): Update expand_complex_multiplication
        and expand_complex_division call-sites.

2018-05-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/85582
        * config/i386/i386.md (*ashl<dwi>3_doubleword_mask,
        *ashl<dwi>3_doubleword_mask_1, *<shift_insn><dwi>3_doubleword_mask,
        *<shift_insn><dwi>3_doubleword_mask_1): In condition require that
        the highest significant bit of the shift count mask is clear.  In
        check whether and[sq]i3 is needed verify that all significant bits
        of the shift count other than the highest are set.

2018-05-02  Tom de Vries  <tom@codesourcery.com>

        PR libgomp/82428
        * builtins.def (DEF_GOACC_BUILTIN_ONLY): Define.
        * omp-builtins.def (BUILT_IN_GOACC_PARLEVEL_ID)
        (BUILT_IN_GOACC_PARLEVEL_SIZE): New builtin.
        * builtins.c (expand_builtin_goacc_parlevel_id_size): New function.
        (expand_builtin): Call expand_builtin_goacc_parlevel_id_size.
        * doc/extend.texi (Other Builtins): Add __builtin_goacc_parlevel_id and
        __builtin_goacc_parlevel_size.

2018-05-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85597
        * tree-vect-stmts.c (vectorizable_operation): For ternary SLP
        do not use split vect_get_vec_defs call but call vect_get_slp_defs
        directly.

2018-05-02  Tom de Vries  <tom@codesourcery.com>

        PR testsuite/85106
        * doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
        dump files): Add ltrans-tree.

2018-05-02  Tom de Vries  <tom@codesourcery.com>

        PR testsuite/85106
        * doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
        dump files): Add wpa-ipa.

2018-05-02  Segher Boessenkool  <segher@kernel.crashing.org>

        * config.gcc (powerpc*-*-*): Remove paired.h.  Unsupport the
        powerpc*-*-linux*paired* target.
        * config/rs6000/750cl.h: Delete.
        * config/rs6000/paired.h: Delete.
        * config/rs6000/paired.md: Delete.
        * config/rs6000/predicates.md (easy_vector_constant): Remove paired
        float support.
        * config/rs6000/rs6000-builtin.def: Remove paired float support.
        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Update
        comment.  Remove paired float support.
        * config/rs6000/rs6000-modes.def: Remove V2SF and V2SI.
        * config/rs6000/rs6000-opts.h (enum rs6000_vector): Delete
        VECTOR_PAIRED.
        * config/rs6000/rs6000-protos.h (paired_expand_vector_init,
        paired_emit_vector_cond_expr, paired_expand_vector_move): Delete
        declarations.
        * config/rs6000/rs6000.c: Remove paired float support.
        (paired_expand_vector_init, paired_expand_vector_move,
        paired_emit_vector_compare, paired_emit_vector_cond_expr,
        (paired_expand_lv_builtin, paired_expand_stv_builtin,
        paired_expand_builtin, paired_expand_predicate_builtin,
        paired_init_builtins): Delete.
        * config/rs6000/rs6000.h: Remove paired float support.
        * config/rs6000/rs6000.md: Remove paired float support.
        (move_from_CR_ov_bit): Delete.
        * config/rs6000/rs6000.opt (mpaired): Delete.
        * config/rs6000/t-rs6000: Remove paired.md from MD_INCLUDES.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mpaired.

2018-05-02  Richard Biener  <rguenther@suse.de>

        PR middle-end/85567
        * gimplify.c (gimplify_save_expr): When in SSA form allow
        SAVE_EXPRs to compute to SSA vars.

2018-05-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/85582
        * config/i386/i386.md (*ashl<dwi>3_doubleword_mask,
        *ashl<dwi>3_doubleword_mask_1, *<shift_insn><dwi>3_doubleword_mask,
        *<shift_insn><dwi>3_doubleword_mask_1): If and[sq]i3 is needed, don't
        clobber operands[2], instead use a new pseudo.  Formatting fixes.

2018-05-02  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85586
        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only
        exit early for statements in the same group if the accesses are
        not strided.

2018-05-02  Tom de Vries  <tom@codesourcery.com>

        PR lto/85451
        * lto-wrapper.c (compile_offload_image): Add "could not find mkoffload"
        error message.

2018-05-01  Marc Glisse  <marc.glisse@inria.fr>

        PR tree-optimization/85143
        * match.pd (A<B&A<C): Extend to BIT_IOR_EXPR.

2018-05-01  Tom de Vries  <tom@codesourcery.com>

        PR lto/85451
        * config/nvptx/mkoffload.c (main): Suggest using -B in "offload compiler
        not found" error message.

2018-05-01  Tom de Vries  <tom@codesourcery.com>

        PR other/83786
        * vec.h (VEC_ORDERED_REMOVE_IF, VEC_ORDERED_REMOVE_IF_FROM_TO): Define.
        * vec.c (test_ordered_remove_if): New function.
        (vec_c_tests): Call test_ordered_remove_if.
        * dwarf2cfi.c (connect_traces): Use VEC_ORDERED_REMOVE_IF_FROM_TO.
        * lto-streamer-out.c (prune_offload_funcs): Use VEC_ORDERED_REMOVE_IF.
        * tree-vect-patterns.c (vect_pattern_recog_1): Use
        VEC_ORDERED_REMOVE_IF.

2018-05-01  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/82665
        * vr-values.c (vr_values::extract_range_from_binary_expr): Handle
        pointer subtraction where arguments come from a memchr call.

2018-05-01  Jakub Jelinek  <jakub@redhat.com>

        * configure.ac (LD_AS_NEEDED_OPTION, LD_NO_AS_NEEDED_OPTION): Use
        --push-state --as-needed and --pop-state instead of --as-needed and
        --no-as-needed if ld supports it.
        * configure: Regenerated.

        PR web/85578
        * doc/install.texi2html: Replace _002d with - and _002a with * in
        generated html files using sed.

2018-04-30  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85523
        * gcc-rich-location.c (blank_line_before_p): New function.
        (use_new_line): New function.
        (gcc_rich_location::add_fixit_insert_formatted): New function.
        * gcc-rich-location.h
        (gcc_rich_location::add_fixit_insert_formatted): New function.

2018-04-30  David Malcolm  <dmalcolm@redhat.com>

        * selftest.c (assert_streq): Rename "expected" and "actual" to
        "val1" and "val2".  Extend NULL-handling to cover both inputs
        symmetrically, while still requiring both to be non-NULL for a pass.
        * selftest.h (assert_streq): Rename "expected" and "actual" to
        "val1" and "val2".
        (ASSERT_EQ): Likewise.
        (ASSERT_EQ_AT): Likewise.
        (ASSERT_KNOWN_EQ): Likewise.
        (ASSERT_KNOWN_EQ_AT): Likewise.
        (ASSERT_NE): Likewise.
        (ASSERT_MAYBE_NE): Likewise.
        (ASSERT_MAYBE_NE_AT): Likewise.
        (ASSERT_STREQ): Likewise.  Clarify that both must be non-NULL for
        the assertion to pass.
        (ASSERT_STREQ_AT): Likewise.

2018-04-30  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-fpie, -fPIE): Fix grammar and clarify
        interaction with -pie.

2018-04-30  David Malcolm  <dmalcolm@redhat.com>

        * selftest.h: Fix alphabetization of per-source-file selftest
        declarations.

2018-04-30  Jason Merrill  <jason@redhat.com>

        PR c++/61982 - dead stores to destroyed objects.
        * gimplify.c (gimplify_modify_expr): Simplify complex lvalue on LHS
        of clobber.

2018-04-30  Jason Merrill  <jason@redhat.com>

        * tree.c (build_clobber): New.
        * tree.h: Declare it.
        * gimplify.c (gimplify_bind_expr, gimplify_target_expr): Use it.

2018-04-30  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic-show-locus.c (layout::layout): Update for
        location_get_source_line returning a char_span.
        (struct char_span): Move to input.h.
        (struct correction): Update for fields in char_span becoming
        private.
        (struct source_line): Update for location_get_source_line
        returning a char_span.
        (layout::print_line): Likewise.
        * edit-context.c (edited_file::print_content): Likewise.
        (edited_file::print_diff_hunk): Likewise.
        (edited_file::print_run_of_changed_lines): Likewise.
        (edited_file::get_num_lines): Likewise.
        (edited_line::edited_line): Likewise.
        * final.c (asm_show_source): Likewise.
        * input.c (location_get_source_line): Convert return type
        from const char * to char_span, losing the final "line_len"
        param.
        (dump_location_info): Update for the above.
        (get_substring_ranges_for_loc): Likewise.  Use a char_span
        when handling the literal within the line.
        (test_reading_source_line): Update for location_get_source_line
        returning a char_span.
        * input.h (class char_span): Move here from
        diagnostic-show-locus.c, converting from a struct to a class.
        Make data members private.
        (char_span::operator bool): New.
        (char_span::length): New.
        (char_span::get_buffer): New.
        (char_span::operator[]): New.
        (char_span::subspan): Make const.
        (char_span::xstrdup): New.
        (location_get_source_line): Convert return type from const char *
        to char_span, losing the final "line_size" param.

2018-04-30  Jan Hubicka  <jh@suse.cz>

        * lto-wrapper.c (ltrans_priorities): New static var.
        (cmp_priority): New.
        (run_gcc): Read priorities and if doing parallel build order
        the Makefile by them.

2018-04-30  David Malcolm  <dmalcolm@redhat.com>

        * input.h (builtins_location_check): Convert to a STATIC_ASSERT.

2018-04-30  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (verify_address): Remove base argument, add
        flag whether to check TREE_ADDRESSABLE and do that.
        (verify_expr): Remove.
        (verify_types_in_gimple_reference): Add pieces from verify_expr.
        (verify_gimple_assign_single): Likewise.
        (verify_gimple_switch): Likewise.
        (verify_expr_location_1): Dereference tp once.  Add (disabled)
        piece from verify_expr.
        (verify_gimple_in_cfg): Do not call verify_expr on all ops.

2018-04-30  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/linux.h (CLEAR_INSN_CACHE): Define.

2018-04-30  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (prepare_extend_operands): Remove.
        (small_data_pattern): Likewise.
        (arc_rewrite_small_data): Likewise.
        * config/arc/arc.c (LEGITIMATE_SMALL_DATA_OFFSET_P): Remove.
        (LEGITIMATE_SMALL_DATA_ADDRESS_P): Likewise.
        (get_symbol_alignment): New function.
        (legitimate_small_data_address_p): Likewise.
        (legitimate_scaled_address): Update, call
        legitimate_small_data_address_p.
        (output_sdata): New static variable.
        (arc_print_operand): Update how we handle small data operands.
        (arc_print_operand_address): Likewise.
        (arc_legitimate_address_p): Update, use
        legitimate_small_data_address_p.
        (arc_rewrite_small_data_p): Remove.
        (arc_rewrite_small_data_1): Likewise.
        (arc_rewrite_small_data): Likewise.
        (small_data_pattern): Likewise.
        (compact_sda_memory_operand): Update to use
        legitimate_small_data_address_p and get_symbol_alignment.
        (prepare_move_operands): Don't rewite sdata pattern.
        (prepare_extend_operands): Remove.
        * config/arc/arc.md (zero_extendqihi2): Don't rewrite sdata
        pattern.
        (zero_extendqisi2): Likewise.
        (zero_extendhisi2): Likewise.
        (extendqihi2): Likewise.
        (extendqisi2): Likewise.
        (extendhisi2): Likewise.
        (addsi3): Likewise.
        (subsi3): Likewise.
        (andsi3): Likewise.
        * config/arc/constraints.md (Usd): Change it to memory constraint.

2018-04-30  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_split_move): Allow signed 6-bit constants
        as source of std instructions.
        * config/arc/arc.md (movsi_insn): Update pattern predicate to
        allow 6-bit constants as source for store instructions.
        (movdi_insn): Update instruction pattern to allow 6-bit constants
        as source for store instructions.

2018-04-30  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-fdebug-types-section): Fix grammar.

2018-04-30  Nathan Sidwell  <nathan@acm.org>
            Sandra Loosemore <sandra@codesourcery.com>

        * dumpfile.c (dump_open): Allow '-' for stdout.
        * doc/invoke.texi (Developer Options): Document dump filename
        determination early.  Document stdin/stdout selection.

2018-04-30  Andrew Sadek  <andrew.sadek.se@gmail.com>

        Microblaze Target: PIC data text relative

        * config/microblaze/microblaze.opt: add new option -mpic-data-text-rel.
        * config/microblaze/microblaze-protos.h (microblaze_constant_address_p):
        Add declaration.
        * config/microblaze/microblaze.h (microblaze_constant_address_p):
        CONSTANT_ADDRESS_P definition to microblaze_constant_address_p.
        * config/microblaze/microblaze.c (TARGET_PIC_DATA_TEXT_REL):
        New addressing mode for data-text relative position indepenedent code.
        (microblaze_classify_unspec): add 'UNSPEC_TEXT' case ->
        'ADDRESS_SYMBOLIC_TXT_REL'.
        (microblaze_classify_address): Add handling for UNSPEC + CONST_INT.
        (microblaze_legitimate_pic_operand): Exclude function calls from
        pic operands in case of TARGET_PIC_DATA_TEXT_REL option.
        (microblaze_legitimize_address): Generate 'UNSPEC_TEXT' for all possible
        addresses cases.
        (microblaze_address_insns): Add 'ADDRESS_SYMBOLIC_TXT_REL' case.
        (print_operand): Add 'ADDRESS_SYMBOLIC_TXT_REL' case.
        (print_operand_address): Add 'ADDRESS_SYMBOLIC_TXT_REL' case + handling
        for 'address + offset'.
        (microblaze_expand_prologue): Add new function prologue call for
        'r20' assignation.
        (microblaze_asm_generate_pic_addr_dif_vec): Override new target hook
        'TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC' to disable address diff vector
        table in case of TARGET_PIC_DATA_TEXT_REL.
        (expand_pic_symbol_ref): Add handling for 'UNSPEC_TEXT'.
        * config/microblaze/microblaze.md (TARGET_PIC_DATA_TEXT_REL):
        Add new macros 'UNSPEC_TEXT',
        'UNSPEC_SET_TEXT' + add rule for setting r20 in function prologue
        + exclude function calls from 'UNSPEC_PLT' in case of data text
        relative mode.
        * doc/tm.texi.in (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Add
        new target hook for generating address diff vector tables in case of
        flag_pic.
        * doc/tm.texi : Regenerate.
        * stmt.c (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Append new condition
        'targetm.asm_out.generate_pic_addr_diff_vec' to flag_pic in case
        of addr diff vector generation.
        * target.def (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Add
        target hook definition.
        * targhooks.h, targhooks.c (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC):
        Add default function for generate_pic_addr_diff_vec -> flag_pic.
        * doc/invoke.texi (Add new pic option): Add new microblaze pic
        option for data text relative.

2018-04-30  Richard Biener  <rguenther@suse.de>

        * tree-chrec.h (evolution_function_is_constant_p): Remove
        redundant check.
        * tree-cfg.c (tree_node_can_be_shared): Re-order checks.

2018-04-30  Richard Biener  <rguenther@suse.de>

        PR bootstrap/85571
        * dwarf2out.c (gen_producer_string): Ignore -fchecking[=].

2018-04-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/28364
        PR tree-optimization/85275
        * tree-ssa-loop-ch.c (ch_base::copy_headers): Stop after
        copying first exit test.

2018-04-28  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (dwarf2out_finish): Add .debug_addr table header for
        dwarf_version >= 5.
        (dwarf_AT): Handle DW_AT_addr_base.
        (add_top_level_skeleton_die_attrs): Use dwarf_AT for DW_AT_addr_base.

2018-04-28  Uros Bizjak  <ubizjak@gmail.com>

        PR target/84431
        * config/i386/i386.md (*ashl<dwi>3_doubleword_mask): New pattern.
        (*ashl<dwi>3_doubleword_mask_1): Ditto.
        (*<shift_insn><dwi>3_doubleword_mask): Ditto.
        (*<shift_insn><dwi>3_doubleword_mask_1): Ditto.

2018-04-28  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (verify_gimple_phi): Take a gphi * argument.
        (verify_gimple_in_cfg): Rename visited_stmts to visited_throwing_stmts
        to reflect use.  Only add interesting stmts.

2018-04-27  Martin Jambor  <mjambor@suse.cz>

        PR ipa/85549
        * ipa-cp.c (find_aggregate_values_for_callers_subset): Make sure
        the jump function allows for passing through aggregate values.

2018-04-27  David Malcolm  <dmalcolm@redhat.com>

        * input.h (in_system_header_at): Convert from macro to inline
        function.
        (from_macro_expansion_at): Likewise.
        (from_macro_definition_at): Likewise.

2018-04-27  Jeff Law  <law@redhat.com>

        * config.gcc: Mark tile* targets as deprecated/obsolete.

2018-04-27  Richard Biener  <rguenther@suse.de>

        * config/aarch64/aarch64.c: Simplify ap.__stack advance and
        fix for ILP32.

2018-04-27  Richard Biener  <rguenther@suse.de>

        * tree-cfg.c (verify_expr): Make dead code hit gcc_unreachable.

2018-04-27  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (*movti_internal): Substitute Ye constraint
        with Yd constraint. Set "preferred_for_speed" attribute from
        TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC for alternatives
        with Yd constraint.
        (*movdi_internal): Ditto.
        (movti_interunit splitters): Remove
        TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC from insn condition.
        (movdi_interunit splitters): Ditto.
        * config/i386/constraints.md (Ye): Remove.
        (Yd): Do not depend on TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC.

2018-04-27  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85512
        * config/aarch64/constraints.md (Usg): Limit to 31.
        (Usj): Limit to 63.

2018-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85529
        * tree-ssa-reassoc.c (optimize_range_tests_var_bound): Add FIRST_BB
        argument.  Don't call get_nonzero_bits if opcode is ERROR_MARK_NODE,
        rhs2 def stmt's bb is dominated by first_bb and it isn't an obvious
        zero extension or masking of the MSB bit.
        (optimize_range_tests): Add FIRST_BB argument, pass it through
        to optimize_range_tests_var_bound.
        (maybe_optimize_range_tests, reassociate_bb): Adjust
        optimize_range_tests callers.

2018-04-26  Richard Biener  <rguenther@suse.de>
            Jakub Jelinek  <jakub@redhat.com>

        * cgraph.h (symbol_table): Just declare debug method here.
        * symtab.c (symbol_table::debug): Define.

2018-04-26  Eric Botcazou  <ebotcazou@adacore.com>

        * loop-invariant.c (may_assign_reg_p): Return false for frame pointer.

2018-04-26  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md ("isa" attribute): Add x64_sse2.
        ("enabled" attribute): Handle x64_sse2 "isa" attribute.
        (*movdi_internal): Substitute Yi and Yj constraint with x
        and Ym and Yn constraint with y constraint.  Update "isa"
        attribute and set "preferred_for_speed" attribute from
        TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC for updated alternatives.
        (*movsi_internal): Ditto.
        (*movdf_internal): Ditto.
        (*movsf_internal): Ditto.
        (*zero_extendsidi2): Ditto.
        * config/i386/sse.md (vec_set<mode>_0): Ditto.
        (sse2_loadld): Ditto.
        (*vec_extract<ssevecmodelower>_0): Ditto.
        (*vec_extractv4si_0_zext_sse4): Ditto.
        (vec_concatv2di): Ditto.
        (*vec_dup<mode>): Ditto.
        * config/i386/mmx.md (*mov<mode>_internal): Ditto.
        * config/i386/constraints.md (Yi): Remove.
        (Yj): Remove.
        (Ym): Remove.
        (Yn): Remove.

2018-04-26  Nathan Sidwell  <nathan@acm.org>

        * dumpfile.c (dump_open): New.
        (dump_open_alternate_stream, dump_start, dump_begin): Call it.
        (dump_finish): Detect stdio/stderr by value not name.

2018-04-26  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-Wreturn-type): Document default status for C++.

2018-04-26  Tom de Vries  <tom@codesourcery.com>

        PR target/84952
        * config/nvptx/nvptx.c (verify_neutering_jumps)
        (verify_neutering_labels): New function
        (nvptx_single): Use verify_neutering_jumps and verify_neutering_labels.

2018-04-26  Tom de Vries  <tom@codesourcery.com>

        PR target/84025
        * config/nvptx/nvptx.c (needs_neutering_p): New function.
        (nvptx_single): Use needs_neutering_p to skip over insns that do not
        need neutering.

2018-04-26  Richard Biener <rguenther@suse.de>
            Tom de Vries  <tom@codesourcery.com>

        PR lto/85422
        * lto-streamer-out.c (output_function): Fixup loops if required to match
        discovery done in the reader.

2018-04-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85116
        * tree-ssa-loop-ch.c (do_while_loop_p): A do-while loop should
        have a loop exit from the single latch predecessor.  Remove
        case of header with just condition.
        (ch_base::copy_headers): Exclude infinite loops from any
        processing.
        (pass_ch::execute): Record exits.

2018-04-26  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_get_data_access_cost): Get
        prologue cost vector and pass it to vect_get_load_cost.
        (vect_get_peeling_costs_all_drs): Likewise.
        (vect_peeling_hash_get_lowest_cost): Likewise.
        (vect_enhance_data_refs_alignment): Likewise.

2018-04-26  Richard Biener  <rguenther@suse.de>

        PR middle-end/85450
        * tree-cfg.c (verify_gimple_assign_unary): Restore proper
        checking of integer<->pointer conversions.
        * omp-expand.c (expand_omp_for_static_nochunk): Avoid
        sign-/zero-extending pointer types.
        (expand_omp_for_static_chunk): Likewise.

2018-03-22  Hans-Peter Nilsson  <hp@axis.com>
            Jean Lee  <xiaoyur347@gmail.com>

        * config/mips/mips.c (mips_asan_shadow_offset): New function.
        (TARGET_ASAN_SHADOW_OFFSET): Define.
        * config/mips/mips.h (FRAME_GROWS_DOWNWARD): Augment to also be
        true for -fsanitize=address.

2018-04-25  Mark Wielaard  <mark@klomp.org>

        * dwarf2out.c (file_info_cmp): Sort longer dir prefixes before
        shorter ones.

2018-04-25  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/i386.md (*x86_mov<mode>cc_0_m1): Use type "alu1" rather
        than "alu", remove explicit "memory" and "imm_disp" attributes.
        (*x86_mov<mode>cc_0_m1_se, *x86_mov<mode>cc_0_m1_neg): Likewise.

        PR middle-end/85414
        * simplify-rtx.c (simplify_unary_operation_1) <case SIGN_EXTEND,
        case ZERO_EXTEND>: Pass SUBREG_REG (op) rather than op to
        gen_lowpart_no_emit.

2018-04-25  Sebastian Peryt  <sebastian.peryt@intel.com>

        PR target/85473
        * config/i386/i386.c (ix86_expand_builtin): Change memory
        operand to XI, extend p0 to Pmode.
        * config/i386/i386.md: Change unspec volatile and operand
        1 mode to XI, change operand 0 mode to P.

2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-predicates.c (nds32_can_use_bclr_p): Mask with
        GET_MODE_MASK before any checking.
        (nds32_can_use_bset_p): Likewise.
        (nds32_can_use_btgl_p): Likewise.

2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-doubleword.md: New define_split pattern for
        illegal register number.

2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_print_operand): Set op_value ealier.

2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (ASM_APP_ON): Add missing newline character.

2018-04-25  Richard Biener  <rguenther@suse.de>

        * lto-streamer.h (LTO_major_version): Bump to 8.

2018-04-25  Jakub Jelinek  <jakub@redhat.com>

        * BASE-VER: Set to 9.0.0.

2018-04-24  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (init_float128_ieee): Fix spelling mistakes
        in __abskf2 and __powikf2.

2018-04-24  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85512
        * config/aarch64/constraints.md (Usg, Usj): New constraints.
        * config/aarch64/iterators.md (cmode_simd): New mode attribute.
        * config/aarch64/aarch64.md (*aarch64_ashr_sisd_or_int_<mode>3):
        Use the above on operand 2.  Reindent.
        (*aarch64_lshr_sisd_or_int_<mode>3): Likewise.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85485
        * common/config/i386/i386-common.c (ix86_handle_option): Don't
        handle OPT_mcet.
        * config/i386/i386.opt (mcet): Removed.
        * doc/install.texi: Remove -mcet documentation.
        * doc/invoke.texi: Likewise.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85485
        * doc/install.texi: Remove -mcet from bootstrap-cet.

2018-04-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/85511
        * config/i386/i386.c (ix86_init_mmx_sse_builtins): Don't define
        __builtin_ia32_readeflags_u32 and __builtin_ia32_writeeflags_u32
        if TARGET_64BIT.

        PR target/85503
        * config/rs6000/rs6000-p8swap.c (const_load_sequence_p): Punt if
        const_vector is not CONST_VECTOR or SYMBOL_REF for a constant pool
        containing a CONST_VECTOR.

2018-04-24  Cesar Philippidis  <cesar@codesourcery.com>

        * doc/install.texi: Update newlib dependency for nvptx.

2018-04-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/85508
        * config/i386/i386.c (ix86_expand_vector_init_one_var): Use UINTVAL
        instead of INTVAL when shifting x left.

2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR tree-optimization/85478
        * tree-vect-loop.c (vect_analyze_loop_2): Do not call
        vect_grouped_store_supported for single element vectors.

2018-04-24  Richard Biener  <rguenther@suse.de>

        PR target/85491
        * config/i386/i386.c (ix86_add_stmt_cost): Restrict strided
        load cost increase to the case of non-constant step.

2018-04-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/84828
        * reg-stack.c (move_for_stack_reg): Don't fail assertion about dead
        destination if any_malformed_asm.

2018-04-23  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/85496
        * expr.c (store_field): In the bitfield case, if the value comes from
        a function call and is returned in registers by means of a PARALLEL,
        do not change the mode of the temporary unless BLKmode and VOIDmode.

2018-04-23  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/85423
        * sel-sched-ir.c (has_dependence_note_mem_dep): Only discard
        dependencies to debug insns when the previous insn is non-debug.

2018-04-23  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md ("vunspec"): Delete it, unify all the unspec
        enums into a single definition.
        (fls): Fix predicates and printing.
        (seti): Likewise.

2018-04-23  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (check_if_valid_sleep_operand): Remove.
        * config/arc/arc.c (arc_expand_builtin): Sleep accepts registers
        and short u6 immediate.
        (check_if_valid_sleep_operand): Remove.
        * config/arc/arc.md (Sleep): Accepts registers and u6 immediates.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_compute_stack_frame): Consider
        flag_always_save_lp condition.
        * config/nds32/nds32.opt (malways-save-lp): New option.

2018-04-22  Shiva Chen  <shiva0217@gmail.com>

        * config/nds32/nds32-protos.h (nds32_use_load_post_increment): Declare.
        * config/nds32/nds32.c (nds32_use_load_post_increment): New.
        * config/nds32/nds32.h
        (USE_LOAD_POST_INCREMENT, USE_LOAD_POST_DECREMENT): Define.
        (USE_STORE_POST_INCREMENT, USE_STORE_POST_DECREMENT): Define.

2018-04-22  Shiva Chen  <shiva0217@gmail.com>

        * config/nds32/nds32-protos.h (nds32_ls_333_p): Remove.
        * config/nds32/nds32.c (nds32_ls_333_p): Remove.

2018-04-22  Shiva Chen  <shiva0217@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_case_vector_shorten_mode):
        Declare.
        * config/nds32/nds32.c (nds32_case_vector_shorten_mode): New function.
        * config/nds32/nds32.h (CASE_VECTOR_SHORTEN_MODE): Modify.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_compute_stack_frame): Fix wrong value.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_data_alignment,
        nds32_local_alignment): Declare.
        * config/nds32/nds32.c (nds32_data_alignment, nds32_constant_alignment,
        nds32_local_alignment): New functions.
        (TARGET_CONSTANT_ALIGNMENT): Define.
        * config/nds32/nds32.h (DATA_ALIGNMENT, LOCAL_ALIGNMENT): Define.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c
        (TARGET_HARD_REGNO_MODE_OK): Move to the bottom of file.
        (TARGET_MODES_TIEABLE_P): Likewise.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_asm_file_start): Display optimization
        level Ofast and Og.

2018-04-22  Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add enum values
        for unaligned access.
        * config/nds32/nds32-intrinsic.c: Implementation of expanding
        unaligned access.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.
        * config/nds32/nds32.opt (munaligned-access): New option.
        * config/nds32/nds32.c (nds32_asm_file_start): Display
        flag_unaligned_access status.

2018-04-20  Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/elf.h (LINK_SPEC): Pass --no-relax if
        -mno-relax is present.
        * config/riscv/linux.h (LINK_SPEC): Ditto.

2018-04-20  Martin Sebor  <msebor@redhat.com>

        PR c/85365
        * gimple-fold.c (gimple_fold_builtin_strcpy): Suppress -Wrestrict
        for null pointers.
        (gimple_fold_builtin_stxcpy_chk): Same.
        * gimple-ssa-warn-restrict.c (check_bounds_or_overlap): Same.

2018-04-20  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85456
        * config/rs6000/rs6000.c (init_float128_ieee): Add support to call
        __powikf2 when long double is IEEE 128-bit.

2018-04-20  Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/riscv.c (riscv_first_stack_step): Round up min
        step to make sure stack always aligned.

2018-04-20  Carl Love  <cel@us.ibm.com>

        PR target/83402
        * config/rs6000/rs6000-c.c (rs6000_gimple_fold_builtin): Add
        size check for arg0.

2018-04-20  Nathan Sidwell  <nathan@codesourcery.com>
            Tom de Vries  <tom@codesourcery.com>

        PR target/85445
        * config/nvptx/nvptx.c (nvptx_emit_forking, nvptx_emit_joining):
        Emit insns for calls too.
        (nvptx_find_par): Always look for worker-level predecessor insn.
        (nvptx_propagate): Add is_call parm, return bool.  Copy frame for
        calls.
        (nvptx_vpropagate, nvptx_wpropagate): Adjust.
        (nvptx_process_pars): Propagate frames for calls.

2018-04-20  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85469
        * common/config/i386/i386-common.c (OPTION_MASK_ISA_IBT_SET):
        Removed.
        (OPTION_MASK_ISA_IBT_UNSET): Likewise.
        (ix86_handle_option): Don't handle OPT_mibt.
        * config/i386/cet.h: Check __CET__ instead of __IBT__ and
        __SHSTK__.
        * config/i386/driver-i386.c (host_detect_local_cpu): Remove
        has_ibt and ibt.
        * config/i386/i386-c.c (ix86_target_macros_internal): Don't
        check OPTION_MASK_ISA_IBT nor flag_cf_protection.
        (ix86_target_macros): Define __CET__ with flag_cf_protection
        for -fcf-protection.
        * config/i386/i386.c (isa2_opts): Remove -mibt.
        * config/i386/i386.h (TARGET_IBT): Removed.
        (TARGET_IBT_P): Likewise.
        (ix86_valid_target_attribute_inner_p): Don't check OPT_mibt.
        * config/i386/i386.md (nop_endbr): Don't check TARGET_IBT.
        * config/i386/i386.opt (mcet): Update help message.
        (mshstk): Likewise.
        (mibt): Removed.
        * doc/invoke.texi: Remove -mibt.  Document __CET__.  Document
        -mcet as an alias for -mshstk.

2018-04-20  Richard Biener <rguenther@suse.de>

        PR middle-end/85475
        * match.pd ((X * CST) * Y -> (X * Y) * CST): Avoid exponential
        complexity by forcing a single use of the multiply operand.

2018-04-20  Martin Jambor  <mjambor@suse.cz>

        ipa/85449
        * ipa-cp.c (cgraph_edge_brings_value_p): Move check for self-feeding
        recursion dependency to only apply to non-clones.

2018-04-20  Martin Jambor  <mjambor@suse.cz>

        ipa/85447
        * ipa-cp.c (create_specialized_node): Check that clones of
        self-recursive edges exist during IPA-CP.

2018-04-19  Toon Moene  <toon@moene.org>

        * doc/invoke.texi: Add -floop-unroll-and-jam to options enabled
        by -O3.

2018-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85467
        * fold-const.c (fold_ternary_loc) <case BIT_FIELD_REF>: Use
        VECTOR_TYPE_P macro.  If type is vector type, VIEW_CONVERT_EXPR the
        VECTOR_CST element to type.

2018-04-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85397
        * config/i386/i386.h (STACK_SAVEAREA_MODE): New.
        * config/i386/i386.md (builtin_setjmp_setup): Removed.
        (builtin_longjmp): Likewise.
        (save_stack_nonlocal): New pattern.
        (restore_stack_nonlocal): Likewise.

2018-04-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85404
        * config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
        Replace ASM_OUTPUT_LABEL with fprintf.

2018-04-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85417
        * config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
        Check flag_cf_protection instead of TARGET_IBT and TARGET_SHSTK.
        * config/i386/i386-c.c (ix86_target_macros_internal): Also
        define __IBT__ and __SHSTK__ for -fcf-protection.
        * config/i386/i386.c (pass_insert_endbranch::gate): Don't check
        TARGET_IBT.
        (ix86_trampoline_init): Likewise.
        (x86_output_mi_thunk): Likewise.
        (ix86_notrack_prefixed_insn_p): Likewise.
        (ix86_option_override_internal): Don't disallow -fcf-protection.
        * config/i386/i386.md (rdssp<mode>): Also enable for
        -fcf-protection.
        (incssp<mode>): Likewise.
        (nop_endbr): Likewise.
        * config/i386/i386.opt (mcet): Change help message to built-in
        functions only.
        (mibt): Likewise.
        (mshstk): Likewise.
        * doc/invoke.texi: Remove -mcet, -mibt and -mshstk condition
        on -fcf-protection.  Change -mcet, -mibt and -mshstk to only
        enable CET built-in functions.

2018-04-19  Sebastian Peryt  <sebastian.peryt@intel.com>

        * common/config/i386/i386-common.c
        (OPTION_MASK_ISA_MOVDIRI_SET, OPTION_MASK_ISA_MOVDIR64B_SET,
        OPTION_MASK_ISA_MOVDIRI_UNSET,
        OPTION_MASK_ISA_MOVDIR64B_UNSET): New defines.
        (ix86_handle_option): Handle -mmovdiri and -mmovdir64b.
        * config.gcc (movdirintrin.h): New header.
        * config/i386/cpuid.h (bit_MOVDIRI,
        bit_MOVDIR64B): New bits.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect -mmovdiri
        and -mmvodir64b.
        * config/i386/i386-builtin-types.def ((VOID, PUNSIGNED, UNSIGNED),
        (VOID, PVOID, PCVOID)): New function types.
        * config/i386/i386-builtin.def (__builtin_ia32_directstoreu_u32,
        __builtin_ia32_directstoreu_u64,
        __builtin_ia32_movdir64b): New builtins.
        * config/i386/i386-c.c (__MOVDIRI__, __MOVDIR64B__): New.
        * config/i386/i386.c (ix86_target_string): Added -mmovdir64b
        and -mmovdiri.
        (ix86_valid_target_attribute_inner_p): Ditto.
        (ix86_expand_special_args_builtin): Added VOID_FTYPE_PUNSIGNED_UNSIGNED
        and VOID_FTYPE_PUNSIGNED_UNSIGNED.
        (ix86_expand_builtin): Expand IX86_BUILTIN_MOVDIR64B.
        * config/i386/i386.h (TARGET_MOVDIRI, TARGET_MOVDIRI_P,
        TARGET_MOVDIR64B, TARGET_MOVDIR64B_P): New.
        * config/i386/i386.md (UNSPECV_MOVDIRI, UNSPECV_MOVDIR64B): New.
        (movdiri<mode>, movdir64b_<mode>): New.
        * config/i386/i386.opt: Add -mmovdiri and -mmovdir64b.
        * config/i386/immintrin.h: Include movdirintrin.h.
        * config/i386/movdirintrin.h: New file.
        * doc/invoke.texi: Added -mmovdiri and -mmovdir64b.

2018-04-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/85455
        * cfg.c (clear_bb_flags): When loop state says we have
        marked irreducible regions also preserve BB_IRREDUCIBLE_LOOP.

2018-04-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84737
        * tree-vect-data-refs.c (vect_copy_ref_info): New function
        copying restrict info.
        (vect_setup_realignment): Use it.
        * tree-vectorizer.h (vect_copy_ref_info): Declare.
        * tree-vect-stmts.c (vectorizable_store): Copy ref info from
        the first DR to all generated stores.
        (vectorizable_load): Likewise for loads.

2018-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85446
        * match.pd ((intptr_t) x eq/ne CST to x eq/ne (typeof x) cst): Require
        the integral and pointer types to have the same precision.

        * doc/install.texi: Document --disable-cet being the default and
        --enable-cet=auto.

2018-04-18  Martin Liska  <mliska@suse.cz>

        * ipa-devirt.c (odr_subtypes_equivalent_p): Fix GNU coding
        style.

2018-04-18  Martin Liska  <mliska@suse.cz>

        Revert
        2018-03-02  Eric Botcazou  <ebotcazou@adacore.com>

        PR ipa/83983
        * ipa-devirt.c (odr_subtypes_equivalent_p): Get the ODR type of both
        arguments if they are comparable.

2018-04-18  Martin Liska  <mliska@suse.cz>

        Revert
        2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR lto/84805
        * ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
        incomplete types.

2018-04-18  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85388
        * config/i386/i386.c (ix86_expand_split_stack_prologue): Insert
        ENDBR after calling __morestack.

2018-04-18  David Malcolm  <dmalcolm@redhat.com>

        PR jit/85384
        * configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
        by using gcc_base_ver to generate a gcc_driver_version, and use
        it when generating GCC_DRIVER_NAME.
        * configure: Regenerate.

2018-04-18  Jakub Jelinek  <jakub@redhat.com>

        PR target/81084
        * config.gcc: Obsolete powerpc*-*-*spe*.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84637
        * dbxout.c (dbxout_int): Perform negation in unsigned int type.
        (stabstr_D): Change type of unum from unsigned int to
        unsigned HOST_WIDE_INT.  Perform negation in unsigned HOST_WIDE_INT
        type.

2018-04-17  Jim Wilson  <jimw@sifive.com>

        PR 84856
        * config/riscv/riscv.c (riscv_compute_frame_info): Add calls to
        RISCV_STACK_ALIGN when using outgoing_args_size and pretend_args_size.
        Set arg_pointer_offset after using pretend_args_size.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85431
        * dse.c (record_store): Ignore zero width stores.

        PR sanitizer/85230
        * asan.c (handle_builtin_stack_restore): Adjust comment.  Emit
        __asan_allocas_unpoison call and last_alloca_addr = new_sp before
        __builtin_stack_restore rather than after it.
        * builtins.c (expand_asan_emit_allocas_unpoison): Pass
        arg1 + (virtual_dynamic_stack_rtx - stack_pointer_rtx) as second
        argument instead of virtual_dynamic_stack_rtx.

2018-04-17  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-protos.h (rs6000_builtin_is_supported_p):
        New prototype.
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Add note to error message to explain internal mapping of overloaded
        built-in function name to non-overloaded built-in function name.
        * config/rs6000/rs6000.c (rs6000_builtin_is_supported_p): New
        function.

2018-04-17  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/85424
        * config/rs6000/rs6000.md (pack<mode>): Do not try handle a pack
        where the inputs overlap with the output.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/sse.md (vec_extract_lo_<mode><mask_name>): Add
        (=v, v) alternative and explicit "memory" attribute.
        (vec_extract_lo_<mode><mask_name>): Likewise.  Also add
        "type", "prefix", "prefix_extra", "length_immediate" and "mode"
        attributes.
        (vec_extract_lo_<mode><mask_name>): Add (=v, v) alternative and use
        "sselog1" type instead of "sselog".
        (vec_extract_hi_<mode><mask_name>): Use "sselog1" type instead of
        "sselog".  Remove explicit "memory" attribute.
        (vec_extract_lo_v32hi): Add (=v, v) alternative and explicit "memory",
        "type", "prefix", "prefix_extra", "length_immediate" and "mode"
        attributes.
        (vec_extract_hi_v32hi): Merge all alternatives into one, use
        "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.
        (vec_extract_hi_v16hi): Merge each pair of alternatives into one,
        use "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.
        (vec_extract_lo_v64qi): Add (=v, v) alternative and explicit "memory",
        "type", "prefix", "prefix_extra", "length_immediate" and "mode"
        attributes.
        (vec_extract_hi_v64qi): Merge all alternatives into one, use
        "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.
        (vec_extract_hi_v32qi): Merge each pair of alternatives into one,
        use "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.

        PR target/85430
        * config/i386/i386.md (*ashlqi3_1_slp): Use alu1 type instead of alu.

        PR middle-end/85414
        * rtlhooks.c (gen_lowpart_if_possible): Don't call gen_lowpart_SUBREG
        on a SUBREG.

2018-04-17  Martin Jambor  <mjambor@suse.cz>

        PR ipa/85421
        * ipa-cp.c (create_specialized_node): Call
        expand_all_artificial_thunks if necessary.

2018-04-17  Martin Liska  <mliska@suse.cz>

        PR lto/85405
        * ipa-devirt.c (odr_types_equivalent_p): Remove trailing
        in message, remote space in between '_G' and '('.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        PR target/85281
        * config/i386/sse.md (reduces<mode><mask_scalar_name>,
        avx512f_vmcmp<mode>3<round_saeonly_name>,
        avx512f_vmcmp<mode>3_mask<round_saeonly_name>,
        avx512f_sgetexp<mode><mask_scalar_name><round_saeonly_scalar_name>,
        avx512f_rndscale<mode><round_saeonly_name>,
        avx512dq_ranges<mode><mask_scalar_name><round_saeonly_scalar_name>,
        avx512f_vgetmant<mode><mask_scalar_name><round_saeonly_scalar_name>):
        Use %<iptr>2 instead of %2 for -masm=intel.
        (avx512f_vcvtss2usi<round_name>, avx512f_vcvtss2usiq<round_name>,
        avx512f_vcvttss2usi<round_saeonly_name>,
        avx512f_vcvttss2usiq<round_saeonly_name>): Use %k1 instead of %1 for
        -masm=intel.
        (avx512f_vcvtsd2usi<round_name>, avx512f_vcvtsd2usiq<round_name>,
        avx512f_vcvttsd2usi<round_saeonly_name>,
        avx512f_vcvttsd2usiq<round_saeonly_name>, ufloatv2siv2df2<mask_name>):
        Use %q1 instead of %1 for -masm=intel.
        (avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>,
        avx512f_sfixupimm<mode>_mask<round_saeonly_name>): Use %<iptr>3 instead
        of %3 for -masm=intel.
        (sse2_shufpd_v2df_mask): Fix a typo, change %{6%} to %{%6%} for
        -masm=intel.
        (*avx512vl_<code>v2div2qi2_store): Use %w0 instead of %0 for
        -masm=intel.
        (*avx512vl_<code><mode>v4qi2_store): Use %k0 instead of %0 for
        -masm=intel.
        (avx512vl_<code><mode>v4qi2_mask_store): Use a single pattern with
        %k0 and %1 for -masm=intel rather than two patterns, one with %0 and
        %g1.
        (*avx512vl_<code><mode>v8qi2_store): Use %q0 instead of %0 for
        -masm=intel.
        (avx512vl_<code><mode>v8qi2_mask_store): Use a single pattern with
        %q0 and %1 for -masm=intel rather than two patterns, one with %0 and
        %g1 and one with %0 and %1.
        (avx512er_vmrcp28<mode><round_saeonly_name>,
        avx512er_vmrsqrt28<mode><round_saeonly_name>): Use %<iptr>1 instead of
        %1 for -masm=intel.
        (avx5124fmaddps_4fmaddps_mask, avx5124fmaddps_4fmaddss_mask,
        avx5124fmaddps_4fnmaddps_mask, avx5124fmaddps_4fnmaddss_mask,
        avx5124vnniw_vp4dpwssd_mask, avx5124vnniw_vp4dpwssds_mask): Swap order
        of %0 and %{%4%} for -masm=intel.
        (avx5124fmaddps_4fmaddps_maskz, avx5124fmaddps_4fmaddss_maskz,
        avx5124fmaddps_4fnmaddps_maskz, avx5124fmaddps_4fnmaddss_maskz,
        avx5124vnniw_vp4dpwssd_maskz, avx5124vnniw_vp4dpwssds_maskz): Swap
        order of %0 and %{%5%}%{z%} for -masm=intel.

2018-04-17  Jan Hubicka  <jh@suse.cz>

        PR lto/85405
        * ipa-devirt.c (odr_types_equivalent_p): Handle bit fields.

2018-04-17  Martin Liska  <mliska@suse.cz>

        PR ipa/85329
        * multiple_target.c (create_dispatcher_calls): Set apostrophes
        for target_clone error message.  Make default implementation
        clone to be a local declaration.
        (separate_attrs): Add new argument and check for an empty
        string.
        (expand_target_clones): Handle it.
        (ipa_target_clone): Make redirection just for target_clones
        functions.

2018-04-16  Cesar Philippidis  <cesar@codesourcery.com>
            Tom de Vries  <tom@codesourcery.com>

        PR middle-end/84955
        * omp-expand.c (expand_oacc_for): Add dummy false branch for
        tiled basic blocks without omp continue statements.

2018-04-16  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/83660
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): Mark
        vec_extract expression as having side effects to make sure it gets
        a cleanup point.

2018-04-16  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85403
        * config/i386/i386.c (get_builtin_code_for_version): Check
        error_mark_node.

2018-04-16  Olga Makhotina  <olga.makhotina@intel.com>

        PR target/84331
        * config.gcc: Support "skylake".
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_SKYLAKE.
        * config/i386/i386.c (m_SKYLAKE): Define.
        (processor_target_table): Add "skylake".
        (ix86_option_override_internal): Add "skylake".
        (get_builtin_code_for_version): Handle PROCESSOR_SKYLAKE,
        PROCESSOR_CANNONLAKE.
        (get_builtin_code_for_version): Fix priority for
        PROCESSOR_ICELAKE_CLIENT, PROCESSOR_ICELAKE_SERVER,
        PROCESSOR_SKYLAKE-AVX512.
        * config/i386/i386.h (processor_costs): Define TARGET_SKYLAKE.
        (processor_type): Add PROCESSOR_SKYLAKE.

2018-04-16  Paolo Carlini  <paolo.carlini@oracle.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/85112
        * convert.c (convert_to_integer_1): Use direct recursion for
        enumeral types and types with a precision less than the number
        of bits in their mode.

2018-04-16  Julia Koval  <julia.koval@intel.com>

        PR target/84413
        * config/i386/x86-tune.def (X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL,
        X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL): Add m_SKYLAKE_AVX512

2018-04-14  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85293
        * config/rs6000/rs6000.opt (mdirect-move): Make deprecated.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Remove -mdirect-move
        and -mno-direct-move.

2018-04-13  Paul A. Clarke  <pc@us.ibm.com>

        PR target/83402
        * config/rs6000/emmintrin.h (_mm_slli_epi{16,32,64}):
        Ensure that vec_splat_s32 is only called with 0 <= shift < 16.
        Ensure negative shifts result in {0}.

2018-04-13  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/79916
        * config/rs6000/rs6000.c (rs6000_emit_move): Use assigned hard
        regs (if any) to define how to gnerate SD moves when LRA is in
        progress.

2018-04-13  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85393
        * except.h (expand_dw2_landing_pad_for_region): Remove declaration.
        * except.c (expand_dw2_landing_pad_for_region): Make static.
        * bb-reorder.c (fix_up_crossing_landing_pad): In new_bb emit just
        a label and unconditional jump to old_bb, rather than
        expand_dw2_landing_pad_for_region insn(s) and jump to single_succ
        basic block.

        PR rtl-optimization/85376
        * simplify-rtx.c (simplify_const_unary_operation): For CLZ and CTZ and
        zero op0, if C?Z_DEFINED_VALUE_AT_ZERO is false, return NULL_RTX
        instead of a specific value.

2018-04-13  Jan Hubicka  <hubicka@ucw.cz>
            Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/82965
        PR tree-optimization/83991
        * cfgloopanal.c (expected_loop_iterations_unbounded): Add
        by_profile_only parameter.
        * cfgloopmanip.c (scale_loop_profile): Further scale loop's profile
        information if the loop was predicted to iterate too many times.
        * cfgloop.h (expected_loop_iterations_unbounded): Update prototype

2018-04-13  Jan Hubicka  <hubicka@ucw.cz>

        PR lto/71991
        * config/i386/i386.c (ix86_can_inline_p): Allow safe transitions for
        always inline.

2018-04-13  Martin Liska  <mliska@suse.cz>
            Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/81657
        * expr.h (enum block_op_methods): Add BLOCK_OP_NO_LIBCALL_RET.
        * expr.c (emit_block_move_hints): Handle BLOCK_OP_NO_LIBCALL_RET.
        * builtins.c (expand_builtin_memory_copy_args): Use
        BLOCK_OP_NO_LIBCALL_RET method for mempcpy with non-ignored target,
        handle dest_addr == pc_rtx.

2018-04-12  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85291
        * config/rs6000/rs6000.md (fix_trunc<mode>si2): Use legacy code if
        asked to not generate direct moves.
        (fix_trunc<mode>si2_stfiwx): Similar.
        (fix_trunc<mode>si2_internal): Similar.

2018-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83157
        * var-tracking.c (add_stores): Handle STRICT_LOW_PART SET_DEST.
        * cselib.c (cselib_record_sets): For STRICT_LOW_PART dest,
        lookup if dest in some wider mode is known to be const0_rtx and
        if so, record permanent equivalence for it to be ZERO_EXTEND of
        the narrower mode destination.

2018-04-12  Cesar Philippidis  <cesar@codesourcery.com>

        * lto-streamer-out.c (output_function): Revert 259346.
        * omp-expand.c (expand_oacc_for): Likewise.

2018-04-12  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/85354
        * sel-sched-ir.c (sel_init_pipelining): Move cfg_cleanup call...
        * sel-sched.c (sel_global_init): ... here.

2018-04-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/85238
        * lto-wrapper.c (debug_objcopy): Open the files in binary mode.
        * dwarf2out.c (dwarf2out_early_finish): Do not generate assembly in LTO
        mode for PE-COFF targets.
        * config/i386/i386-protos.h (i386_pe_asm_lto_start): Declare.
        (i386_pe_asm_lto_end): Likewise.
        * config/i386/cygming.h (TARGET_ASM_LTO_START): Define.
        (TARGET_ASM_LTO_END): Likewise.
        * config/i386/winnt.c (saved_debug_info_level): New static variable.
        (i386_pe_asm_lto_start): New function.
        (i386_pe_asm_lto_end): Likewise.

2018-04-12  Cesar Philippidis  <cesar@codesourcery.com>
            Richard Biener  <rguenther@suse.de>

        PR middle-end/84955
        * lto-streamer-out.c (output_function): Fix CFG loop state before
        streaming out.
        * omp-expand.c (expand_oacc_for): Handle calls to internal
        functions like regular functions.

2018-04-12  Richard Biener  <rguenther@suse.de>

        PR lto/85371
        * dwarf2out.c (init_sections_and_labels): Use debug_line_section[_label]
        for the early LTO debug to properly generate references to it
        during DIE emission.  Do not re-use that for the skeleton for
        split-dwarf.
        (dwarf2out_early_finish): Likewise.

2018-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR target/85328
        * config/i386/sse.md
        (<mask_codefor>avx512dq_vextract<shuffletype>64x2_1<mask_name> split,
        <mask_codefor>avx512f_vextract<shuffletype>32x4_1<mask_name> split,
        vec_extract_lo_<mode><mask_name> split, vec_extract_lo_v32hi,
        vec_extract_lo_v64qi): For non-AVX512VL if input is xmm16+ reg
        and output is a reg, avoid creating invalid lowpart subreg, but
        instead split into a 512-bit move.  Don't split if not AVX512VL,
        input is xmm16+ reg and output is a mem.
        (vec_extract_lo_<mode><mask_name>, vec_extract_lo_v32hi,
        vec_extract_lo_v64qi): Don't require split if not AVX512VL, input is
        xmm16+ reg and output is a mem.

2018-04-12  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        * config/s390/s390.c (s390_output_indirect_thunk_function): Check
        also for flag_dwarf2_cfi_asm.

2018-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85342
        * regcprop.c (copyprop_hardreg_forward_1): Remove replaced array, use
        a bool scalar var inside of the loop instead.  Don't try to update
        recog_data.operand after failed apply_change_group.

2018-04-12  Tom de Vries  <tom@codesourcery.com>

        PR target/85296
        * config/nvptx/nvptx.c (flexible_array_member_type_p): New function.
        (nvptx_assemble_decl_begin): Add undefined param.  Declare undefined
        array with flexible array member as array without given dimension.
        (nvptx_assemble_undefined_decl): Set nvptx_assemble_decl_begin call
        argument for undefined param to true.

2018-04-11  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/85321
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document options
        -mcall- and -mtraceback=. Remove options -mabi=spe and -mabi=no-spe
        from PowerPC section.
        * config/rs6000/sysv4.opt (mcall-): Improve help text.
        * config/rs6000/rs6000.opt (mblock-compare-inline-limit=): Trim
        help text that is too long.
        * config/rs6000/rs6000.opt (mblock-compare-inline-loop-limit=): Trim
        help text that is too long.
        * config/rs6000/rs6000.opt (mstring-compare-inline-limit=): Trim
        help text that is too long.

2018-04-11  Uros Bizjak  <ubizjak@gmail.com>

        * config/alpha/alpha.md (stack_probe_internal): Rename
        from "probe_stack".  Update all callers.

2018-04-11  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/84566
        * sched-deps.c (sched_analyze_insn): Check deps->readonly when invoking
        sched_macro_fuse_insns.

2018-04-11  Alexander Monakov  <amonakov@ispras.ru>

        PR target/84301
        * sched-rgn.c (add_branch_dependences): Move sel_sched_p check here...
        (compute_block_dependences): ... from here.

2018-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85331
        * vec-perm-indices.h (vec_perm_indices::clamp): Change input type
        from int to HOST_WIDE_INT.

2018-04-11  Martin Jambor  <mjambor@suse.cz>

        PR ipa/84149
        * ipa-cp.c (propagate_vals_across_pass_through): Expand comment.
        (cgraph_edge_brings_value_p): New parameter dest_val, check if it is
        not the same as the source val.
        (cgraph_edge_brings_value_p): New parameter.
        (gather_edges_for_value): Pass destination value to
        cgraph_edge_brings_value_p.
        (perhaps_add_new_callers): Likewise.
        (get_info_about_necessary_edges): Likewise and exclude values brought
        only by self-recursive edges.
        (create_specialized_node): Redirect only clones of self-calling edges.
        (+self_recursive_pass_through_p): New function.
        (find_more_scalar_values_for_callers_subset): Use it.
        (find_aggregate_values_for_callers_subset): Likewise.
        (known_aggs_to_agg_replacement_list): Removed.
        (decide_whether_version_node): Re-calculate known constants for all
        remaining context clones.

2018-04-11  Richard Biener  <rguenther@suse.de>

        PR lto/85339
        * dwarf2out.c (dwarf2out_finish): Remove DW_AT_stmt_list attribute
        from early DWARF output.
        (dwarf2out_early_finish): Output line info unconditionally into
        early DWARF and add reference to it.

2018-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/85281
        * config/i386/sse.md (iptr): Add V16SFmode and V8DFmode cases.
        (<avx512>_vec_dup<mode><mask_name>): Use a single pattern for modes
        other than V2DFmode using iptr mode attribute.
        (<avx512>_vec_dup<mode><mask_name>): Use iptr mode attribute.

2018-04-11  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/84659
        * sel-sched-ir.c (sel_init_pipelining): Invoke cleanup_cfg.

2018-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR debug/85302
        * dwarf2out.c (skip_loc_list_entry): Don't call size_of_locs if
        SIZEP is NULL.
        (output_loc_list): Pass address of a dummy size variable even in the
        locview handling loop.
        (index_location_lists): Add comment on why skip_loc_list_entry can't
        call size_of_locs.

2018-04-11  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        PR target/85261
        * config/arm/arm-builtins.c (arm_expand_builtin): Force input operand
        into register.

2018-04-10  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/85321
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document options
        -mblock-compare-inline-limit, -mblock-compare-inline-loop-limit,
        and -mstring-compare-inline-limit.

2018-04-10  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85287
        * config/rs6000/rs6000.md (allocate_stack): Put the residual size
        for stack clash protection in a register whenever we need it to be in
        a register.

2018-04-10  Segher Boessenkool  <segher@kernel.crashing.org>

        * common/config/rs6000/rs6000-common.c (rs6000_option_init_struct):
        Enable -fasynchronous-unwind-tables by default if OBJECT_FORMAT_ELF.

2018-04-10  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85321
        * config/rs6000/rs6000.opt (mtraceback=): Show the allowed values in
        the help text.
        (mlong-double-): Ditto.
        * config/rs6000/sysv4.opt (msdata=): Ditto.
        (mtls-size=): Ditto.

2018-04-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Remove
        erroneous entries for
        "vector int vec_ldl (int, long int *)", and
        "vector unsigned int vec_ldl (int, unsigned long int *)".
        Add comments and entries for
        "vector bool char vec_ldl (int, bool char *)",
        "vector bool short vec_ldl (int, bool short *)",
        "vector bool int vec_ldl (int, bool int *)",
        "vector bool long long vec_ldl (int, bool long long *)",
        "vector pixel vec_ldl (int, pixel *)",
        "vector long long vec_ldl (int, long long *)",
        "vector unsigned long long vec_ldl (int, unsigned long long *)".
        * config/rs6000/rs6000.c (rs6000_init_builtins): Initialize new
        type tree bool_long_long_type_node and correct definition of
        bool_V2DI_type_node to make reference to this new type tree.
        (rs6000_mangle_type): Replace erroneous reference to
        bool_long_type_node with bool_long_long_type_node.
        * config/rs6000/rs6000.h (enum rs6000_builtin_type_index): Add
        comments to emphasize sign distinctions for char and int types and
        replace RS6000_BTI_bool_long constant with
        RS6000_BTI_bool_long_long constant.  Also add comment to restrict
        use of RS6000_BTI_pixel.
        (bool_long_type_node): Remove this macro definition.
        (bool_long_long_type_node): New macro definition

2018-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85300
        * combine.c (subst): Handle subst of CONST_SCALAR_INT_P new_rtx also
        into FLOAT and UNSIGNED_FLOAT like ZERO_EXTEND, return a CLOBBER if
        simplify_unary_operation fails.

2018-04-10  Martin Liska  <mliska@suse.cz>

        * gdbhooks.py: Add pretty-printers for varpool_node, symtab_node,
        cgraph_edge and ipa_ref.

2018-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/85177
        PR target/85255
        * config/i386/sse.md
        (<extract_type>_vinsert<shuffletype><extract_suf>_mask): Fix
        computation of the VEC_MERGE selector from mask.
        (<extract_type>_vinsert<shuffletype><extract_suf>_1<mask_name>):
        Fix decoding of the VEC_MERGE selector into mask.

2018-04-10  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85286
        * tree-vect-data-refs.c (vect_get_smallest_scalar_type):

2018-04-10  Richard Sandiford  <richard.sandiford@linaro.org>

        * final.c (final_1): Set insn_last_address as well as
        insn_current_address.

2018-04-10  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85173
        * explow.c (emit_stack_probe): Call validize_mem on memory location
        before passing it to gen_probe_stack.  Create address operand and
        legitimize it for the probe_stack_address case.

2018-04-09  Jan Hubicka  <jh@suse.cz>

        PR lto/85078
        * ipa-devirt.c (rebuild_type_inheritance-hash): New.
        * ipa-utils.h (rebuild_type_inheritance-hash): Declare.
        * tree.c (free_lang_data_in_type): Fix handling of binfos;
        walk basetypes.
        (free_lang_data): Rebuild type inheritance graph.

2018-04-09  Martin Sebor  <msebor@redhat.com>

        * invoke.texi (-finline-small-functions): Mention other optimization
        options.
        (-findirect-inlining, -fpartial-inlining): Same.
        (-finline-functions-called-once): Same.
        (-freorder-blocks-and-partition): Same.

2018-04-09  Jan Hubicka  <jh@suse.cz>

        PR rtl/84058
        * cfgcleanup.c (try_forward_edges): Do not give up on crossing
        jumps; choose last target that matches the criteria (i.e.
        no partition changes for non-crossing jumps).
        * cfgrtl.c (cfg_layout_redirect_edge_and_branch): Add basic
        support for redirecting crossing jumps to non-crossing.

2018-04-09  Alexey Brodkin  <abrodkin@synopsys.com>

        * config/arc/arc.c (arc_expand_prologue): Set stack usage info
        also for naked functions.

2018-04-09  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (add_shift): New pattern.
        (add_shift2): Likewise.
        (sub_shift): Likewise.
        (sub_shift_cmp0_noout): Likewise.
        (compare_si_ashiftsi): Likewise.
        (xbfu_cmp0_noout): New combine pattern.
        (xbfu_cmp0"): Likewise.
        (movsi_set_cc_insn): Place the predicable variant first.
        (commutative_binary_cmp0_noout): Remove clobber.
        (commutative_binary_cmp0): New pattern.
        (noncommutative_binary_cmp0): Likewise.
        (noncommutative_binary_cmp0_noout): Likewise.
        (noncommutative_binary_comparison_result_used): Removed.
        (rsub_cmp0): New pattern.
        (rsub_cmp0_noout): Likewise.
        (extzvsi): Changed, keep only meaningful variants.
        (SQH, SEZ): New iterators.
        (SQH_postfix): New mode attribute.
        (SEZ_prefix): New code attribute.
        (<SEZ_prefix>xt<SQH_postfix>_cmp0_noout): New instruction pattern.
        (<SEZ_prefix>xt<SQH_postfix>_cmp0): Likewise.
        * config/arc/predicates.md (cc_set_register): Use CC_REG instead
        of numerical value.
        (noncommutative_operator): Check the availability of barrel
        shifter option.

2018-04-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85284
        * tree-ssa-loop-niter.c (number_of_iterations_exit_assumptions):
        Only use the niter constraining form of simple_iv when the exit
        is always executed.

2018-04-09  Tom de Vries  <tom@codesourcery.com>

        PR target/84041
        * config/nvptx/nvptx.md (define_c_enum "unspecv"): Add UNSPECV_MEMBAR.
        (define_expand "*memory_barrier"): New define_expand.
        (define_insn "memory_barrier"): New insn.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/80463
        PR rtl-optimization/83972
        PR rtl-optimization/83480

        * sel-sched-ir.c (has_dependence_note_mem_dep): Take into account the
        correct producer for the insn.
        (tidy_control_flow): Fixup seqnos in case of debug insns.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/83913

        * sel-sched-ir.c (merge_expr_data): Choose the middle between two
        different sched-times when merging exprs.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/83962

        * sel-sched-ir.c (tidy_control_flow): Correct the order in which we call
        tidy_fallthru_edge and tidy_control_flow.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/83530

        * sel-sched.c (force_next_insn): New global variable.
        (remove_insn_for_debug): When force_next_insn is true, also leave only
        next insn in the ready list.
        (sel_sched_region): When the region wasn't scheduled, make another pass
        over it with force_next_insn set to 1.

2018-04-08  Monk Chiang  <sh.chiang04@gmail.com>

        * config.gcc (nds32le-*-*, nds32be-*-*): Add nds32/nds32_intrinsic.h
        into tm_file.
        * config/nds32/constants.md (unspec_volatile_element): Add enum values
        for interrupt control.
        * config/nds32/nds32-intrinsic.c: Implementation of intrinsic
        functions for interrupt control.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.

2018-04-08  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_init_machine_status,
        nds32_legitimate_index_p, nds32_legitimate_address_p): Consider
        strict_aligned_p field.
        (nds32_expand_to_rtl_hook): New function.
        (TARGET_EXPAND_TO_RTL_HOOK): Define.
        * config/nds32/nds32.h (machine_function): Add strict_aligned_p field.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n7 is valid to --with-cpu.
        * config/nds32/nds32-n7.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N7.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n7
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n7 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add n7.
        * config/nds32/nds32.opt (mcpu): Support n7 pipeline cpus.
        * config/nds32/pipelines.md: Include n7 settings.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that e8 is valid to --with-cpu.
        * config/nds32/nds32-e8.md: New file.
        * config/nds32/nds32-opts.h (nds32-cpu_type): Add CPU_E8.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for e8
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for e8 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add e8.
        * config/nds32/nds32.opt (mcpu): Support e8 pipeline cpus.
        * config/nds32/pipelines.md: Include e8 settings.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n6/n8/s8 are valid to --with-cpu.
        * config/nds32/nds32-n8.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N6 and CPU_N8.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n8
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n8 pipeline.
        * config/nds32/nds32-utils.c: More implementations for n8 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add n8.
        * config/nds32/nds32.opt (mcpu): Support n8 pipeline cpus.
        * config/nds32/pipelines.md: Include n8 settings.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*): Add nds32-utils.o into extra_objs.
        * config/nds32/nds32-n9-2r1w.md: New file.
        * config/nds32/nds32-n9-3r2w.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type, nds32_mul_type,
        nds32_register_ports): New or modify for cpu n9.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n9
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n9 pipeline.
        * config/nds32/nds32-utils.c: New file.
        * config/nds32/nds32.h (TARGET_PIPELINE_N9, TARGET_PIPELINE_SIMPLE,
        TARGET_MUL_SLOW): Define.
        * config/nds32/nds32.md (pipeline_model): New attribute.
        * config/nds32/nds32.opt (mcpu, mconfig-mul, mconfig-register-ports):
        New options that support cpu n9.
        * config/nds32/pipelines.md: Include n9 settings.
        * config/nds32/t-nds32 (nds32-utils.o): Add dependency.

2018-04-08  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (output_cond_branch): Output align
        information if necessary.
        (output_cond_branch_compare_zero): Likewise.
        * config/nds32/nds32.c (nds32_adjust_insn_length): Consider align case.
        (nds32_target_alignment): Refine for alignment.
        * config/nds32/nds32.h (NDS32_ALIGN_P): Define.
        (FUNCTION_BOUNDARY): Modify.
        * config/nds32/nds32.md (call_internal, call_value_internal): Consider
        align case.
        * config/nds32/nds32.opt (malways-align, malign-functions): New.

2018-04-08  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add values for
        TLB operation and data prefetch.
        * config/nds32/nds32-intrinsic.c: Implementation of intrinsic
        functions for TLB operation and data prefetch.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.c (nds32_dpref_names): Likewise.
        (nds32_print_operand): Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
        Andrew Pinski <pinsika@gcc.gnu.org>

        PR middle-end/82976
        * match.pd: Use constant_boolean_node of correct type instead of
        boolean_true_node or boolean_false_node for simplifying
        pointer comparisons to zero.

2018-04-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/80021
        * tree.c (verify_type_variant): Make error call in verify_variant_match
        translatable and remove final full stop.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_EH_RETURN.
        * config/nds32/nds32-md-auxiliary.c (nds32_output_stack_push,
        nds32_output_stack_pop): Support dwarf exception handling process.
        * config/nds32/nds32-protos.h (nds32_dynamic_chain_address): Declare.
        * config/nds32/nds32.c (nds32_init_machine_status): Support dwarf
        exception handling process.
        (nds32_compute_stack_frame): Likewise.
        (nds32_return_addr_rtx): Likewise.
        (nds32_initial_elimination_offset): Likewise.
        (nds32_expand_prologue): Likewise.
        (nds32_expand_epilogue): Likewise.
        (nds32_dynamic_chain_address): New function.
        * config/nds32/nds32.h (machine_function): Add fields for dwarf
        exception handling.
        (DYNAMIC_CHAIN_ADDRESS): Define.
        (EH_RETURN_DATA_REGNO): Define.
        (EH_RETURN_STACKADJ_RTX): Define.
        * config/nds32/nds32.md (eh_return, nds32_eh_return): Implement
        patterns for dwarf exception handling.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h: Clean up obsolete macros.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_element, unspec_volatile_element):
        Add enum values for particular instructions.
        * config/nds32/nds32-intrinsic.c: Implementation of expanding
        particular intrinsic functions.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.
        * config/nds32/nds32.md (type): Add pbsad and pbsada.
        (btst, ave): New patterns for particular instructions.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_element, unspec_volatile_element):
        Add enum values for atomic load/store and memory sync.
        * config/nds32/nds32-intrinsic.c: Implementation for atomic load/store
        and memory sync.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.

2018-04-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85257
        * fold-const.c (native_encode_vector): If not all elts could fit
        and off is -1, return 0 rather than offset.
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Pass
        (offseti - offset2) / BITS_PER_UNIT as 4th argument to
        native_encode_expr.  Verify len * BITS_PER_UNIT >= maxsizei.  Don't
        adjust buffer in native_interpret_expr call.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add cache
        control enum values.
        * config/nds32/nds32-intrinsic.c: Add cache control expand functions.
        * config/nds32/nds32-intrinsic.md: Add cache control patterns.
        * config/nds32/nds32.c (nds32_cctl_names): New.
        (nds32_print_operand): Handle cache control register names.
        * config/nds32/nds32.h (nds32_builtins): New enum values.
        * config/nds32/nds32_intrinsic.h: Add cache control enum types and
        macros.
        * config/nds32/nds32.md (type): Add mmu.
        * config/nds32/pipelines.md (simple_insn): Add mmu.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (type): Remove call.
        * config/nds32/pipelines.md (simple_insn): Likewise.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_FMFCSR, UNSPEC_VOLATILE_FMTCSR and
        UNSPEC_VOLATILE_FMFCFG.
        * config/nds32/nds32-intrinsic.c (bdesc_noarg): New builtin
        description for fmfcfg and fmfcsr.
        (bdesc_1arg): Add fmtcsr.
        (bdesc_2arg): Add fcpynss, fcpyss, fcpynsd and fcpysd.
        (nds32_expand_builtin_impl): Deal with FPU intrinsic functions.
        * config/nds32/nds32-intrinsic.md (unspec_fcpynsd, unspec_fcpysd,
        unspec_fcpynss, unspec_fcpysd, unspec_fcpyss, unspec_fmfcsr,
        unspec_fmfcfg): New patterns.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_FMFCFG,
        NDS32_BUILTIN_FMFCSR, NDS32_BUILTIN_FMTCSR, NDS32_BUILTIN_FCPYNSS,
        NDS32_BUILTIN_FCPYSS,NDS32_BUILTIN_FCPYNSD and NDS32_BUILTIN_FCPYSD.
        * config/nds32/nds32_intrinsic.h (__nds32__fcpynsd, __nds32__fcpynss,
        __nds32__fcpysd, __nds32__fcpyss, __nds32__fmfcsr, __nds32__fmtcsr,
        __nds32__fmfcfg): Define.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/nds32.c (nds32_intrinsic_register_names): Add more
        intrinsic register names.
        * config/nds32/nds32_intrinsic.h (nds32_intrinsic_registers): Add more
        intrinsic register enum values and macros.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_legitimate_index_p): Modify condition
        for load/store addressing form.
        (nds32_print_operand_address): Likewise.

2018-04-06  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/85196
        * config/sparc/sparc.c (sparc_expand_move): Deal with symbolic operands
        based on LABEL_REF.  Remove useless assertion.
        (pic_address_needs_scratch): Fix formatting.
        (sparc_legitimize_pic_address): Minor tweaks.
        (sparc_delegitimize_address): Adjust assertion accordingly.
        * config/sparc/sparc.md (movsi_pic_label_ref): Change label_ref_operand
        into symbolic_operand.
        (movsi_high_pic_label_ref): Likewise.
        (movsi_lo_sum_pic_label_ref): Likewise.
        (movdi_pic_label_ref): Likewise.
        (movdi_high_pic_label_ref): Likewise.
        (movdi_lo_sum_pic_label_ref): Likewise.

2018-04-06  Amaan Cheval  <amaan.cheval@gmail.com>

        * config.gcc (x86_64-*-rtems*): Add rtems.h to tm_file for
        custom LIB_SPEC setup.

2018-04-06  Ruslan Bukin  <br@bsdpad.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config.gcc (riscv*-*-freebsd*): Add RISC-V FreeBSD support.
        * config/riscv/freebsd.h: New.

2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_adjust_insn_length): Refine.
        * config/nds32/nds32.h (ADJUST_INSN_LENGTH): Change the location in
        file.

2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_output_return,
        nds32_output_call, nds32_symbol_binds_local_p): New functions.
        * config/nds32/nds32-protos.h (nds32_output_call,
        nds32_output_return): Declare.
        * config/nds32/nds32.md: Refine all the call and return patterns.

2018-04-06  Jakub Jelinek  <jakub@redhat.com>

        PR debug/85252
        * dwarf2out.c (rtl_for_decl_init): For STRING_CST initializer only
        build CONST_STRING if TYPE_MAX_VALUE is non-NULL and is INTEGER_CST.

        PR rtl-optimization/84872
        * cfgloopmanip.c (create_preheader): Use make_forwarder_block even if
        nentry == 1 when CP_FALLTHRU_PREHEADERS and single_entry is
        EDGE_CROSSING edge.

2018-04-06  Tamar Christina  <tamar.christina@arm.com>

        * expr.c (copy_blkmode_to_reg): Revert 254862.
        * doc/sourcebuild.texi (word_mode_no_slow_unalign): Likewise.

2018-04-06  Richard Biener  <rguenther@suse.de>

        PR middle-end/85244
        * tree-dfa.c (get_ref_base_and_extent): Reset seen_variable_array_ref
        after seeing a component reference with an adjacent field.  Treat
        refs to arrays at struct end of external decls similar to
        refs to unconstrained commons.

2018-04-06  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/85213
        * fold-const.c (twoval_comparison_p): Remove SAVE_P argument and don't
        look through SAVE_EXPRs with non-side-effects argument.  Adjust
        recursive calls.
        (fold_comparison): Adjust twoval_comparison_p caller, don't handle
        save_p here.

2018-04-06  Richard Biener  <rguenther@suse.de>

        PR middle-end/85180
        * alias.c (find_base_term): New wrapper around find_base_term
        unwinding CSELIB_VAL_PTR changes.
        (find_base_term): Do not restore CSELIB_VAL_PTR during the
        recursion.

2018-04-06  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        * config/s390/s390.c (s390_z10_optimize_cmp): Expand dedicated NOP
        instructions.
        * config/s390/s390.md (UNSPECV_NOP_LR_0, UNSPECV_NOP_LR_1): New
        constant definitions.
        ("nop"): lr 0,0 -> nopr r0
        ("nop_lr0", "nop_lr1"): New insn definitions.

2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (*stack_push, *stack_pop): Use
        NDS32_V3PUSH_AVAILABLE_P macro.

2018-04-06  Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Add v2j v3f v3s checking.
        (nds32*-*-*): Add float and fpu_config into supported_defaults.
        * common/config/nds32/nds32-common.c (TARGET_DEFAULT_TARGET_FLAGS):
        Include TARGET_DEFAULT_FPU_ISA and TARGET_DEFAULT_FPU_FMA.
        * config/nds32/constants.md (unspec_element): Add UNSPEC_COPYSIGN,
        UNSPEC_FCPYNSD, UNSPEC_FCPYNSS, UNSPEC_FCPYSD and UNSPEC_FCPYSS.
        * config/nds32/constraints.md: New constraints and checking for hard
        float configuration.
        * config/nds32/iterators.md: New mode iterator and attribute for hard
        float configuration.
        * config/nds32/nds32-doubleword.md: Use hard float alternatives and
        patterns.
        * config/nds32/nds32-fpu.md: New file.
        * config/nds32/nds32-md-auxiliary.c: New functions and checkings to
        deal with hard float code generation.
        * config/nds32/nds32-opts.h (nds32_arch_type): Add ARCH_V3F and
        ARCH_V3S.
        (abi_type, float_reg_number): New enum type.
        * config/nds32/nds32-predicates.c: New predicates for hard float.
        * config/nds32/nds32-protos.h: Declare functions for hard float.
        * config/nds32/nds32.c: Implementation for hard float configuration.
        * config/nds32/nds32.h: Definitions for hard float configuration.
        * config/nds32/nds32.md: Include hard float machine description and
        modify patterns for hard float configuration.
        * config/nds32/nds32.opt: New options for hard float configuration.
        * config/nds32/predicates.md: New predicates for hard float
        configuration.

2018-04-06  Kuan-Lin Chen  <kuanlinchentw@gmail.com>

        * common/config/nds32/nds32-common.c
        (nds32_option_optimization_table): Enable -mreleax-hint by default.

2018-04-05  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85195
        * match.pd (BIT_FIELD_REF CONSTRUCTOR@0 @1 @2): Use view_convert around
        CONSTRUCTOR_ELT (ctor, ...)->value.

2018-04-05  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85193
        * config/i386/i386.md (define_attr "memory"): Handle rotate1 type.

2018-04-05  Tom de Vries  <tom@codesourcery.com>

        PR target/85204
        * config/nvptx/nvptx.c (nvptx_single): Fix neutering of bb with only
        cond jump.

2018-04-05  Shiva Chen  <shiva0217@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/constraints.md (U33): Fine-tune checking condition.
        * config/nds32/nds32-md-auxiliary.c (nds32_mem_format): Ditto.
        * config/nds32/nds32.h (nds32_16bit_address_type): Add
        ADDRESS_POST_MODIFY_LO_REG_IMM3U.

2018-04-05  Shiva Chen  <shiva0217@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/constraints.md (Ufe): New memory constraint.
        * config/nds32/nds32-md-auxiliary.c (nds32_mem_format,
        nds32_output_16bit_load): Consider r8 register for lwi45.fe format.
        * config/nds32/nds32.c (nds32_print_operand): Output lwi45.fe
        operands.
        * config/nds32/nds32.h (nds32_16bit_address_type): Add ADDRESS_R8_IMM7U.
        * config/nds32/nds32.md (*mov<mode>): Adjust pattern.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md: Use optimize_size in the condition for
        alu-shift instructions.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (divsi4, udivsi4): New patterns.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (negsi2): Refine pattern.

2018-04-05  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/iterators.md (shift_rotate): New code iterator.
        (shift): New code attribute.
        * config/nds32/nds32-md-auxiliary.c (nds32_expand_constant): New.
        * config/nds32/nds32-protos.h (nds32_expand_constant): Declare.
        * config/nds32/nds32.c (nds32_print_operand): Deal with more cases.
        * config/nds32/nds32.md (addsi3, *add_srli): Refine implementation for
        bit-wise operations.
        (andsi3, *andsi3): Ditto.
        (iorsi3, *iorsi3, *or_slli, *or_srli): Ditto.
        (xorsi3, *xorsi3, *xor_slli, *xor_srli): Ditto.
        (<shift>si3, *ashlsi3, *ashrsi3, *lshrsi3, *rotrsi3): Ditto.
        * config/nds32/predicates.md (nds32_rimm5u_operand, nds32_and_operand,
        nds32_ior_operand, nds32_xor_operand): New predicates.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (add<mode>3, sub<mode>3): Rename to ...
        (addsi3, subsi3): ... this.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (*sub_srli, *and_slli): Fine-tune predicator.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md: Adjust indention.

2018-04-05  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32.md (feature): New attribute.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (subtype): New attribute.

2018-04-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        PR target/85203
        * config/arm/arm-builtins.c (arm_expand_builtin): Change
        expansion to perform a bitwise AND of the argument followed by a
        boolean negation of the result.

2018-04-04  Peter Bergner  <bergner@vnet.ibm.com>

        PR rtl-optimization/84878
        * ddg.c (add_cross_iteration_register_deps): Use DF_REF_BB to determine
        the basic block.  Assert the use reference is not artificial and that
        it has an associated insn.

2018-04-04  Michael Matz  <matz@suse.de>

        * builtins.c (compute_objsize): Pass correct operand
        to array_at_struct_end_p.

2018-04-04  Richard Biener  <rguenther@suse.de>

        PR lto/85176
        * dwarf2out.c (dwarf2out_register_external_die): Peel namespaces
        from contexts for DINFO_LEVEL_TERSE and below.

2018-04-04  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-doubleword.md (move_<mode>): Require
        resiter_operand condition.
        * config/nds32/nds32.md (*move<mode>): Ditto.

2018-04-04  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/nds32.md (movmisalign<mode>): New pattern.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (movqi, movhi): Merge into mov<mode>.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_inverse_cond_code,
        nds32_cond_code_str, output_cond_branch,
        output_cond_branch_compare_zero, nds32_expand_cbranch,
        nds32_expand_cstore, nds32_expand_movcc,
        nds32_output_cbranchsi4_equality_zero,
        nds32_output_cbranchsi4_equality_reg,
        nds32_output_cbranchsi4_equality_reg_or_const_int,
        nds32_output_cbranchsi4_greater_less_zero: New functions.
        * config/nds32/nds32-protos.h (nds32_expand_cbranch,
        nds32_expand_cstore, nds32_expand_movcc,
        nds32_output_cbranchsi4_equality_zero,
        nds32_output_cbranchsi4_equality_reg,
        nds32_output_cbranchsi4_equality_reg_or_const_int,
        nds32_output_cbranchsi4_greater_less_zero): Declare.
        * config/nds32/predicates.md (nds32_movecc_comparison_operator,
        nds32_rimm11s_operand): New predicates.
        * config/nds32/nds32.h (nds32_expand_result_type): New enum type.
        * config/nds32/nds32.md: Rewrite all the branch and conditional move
        patterns.

2018-04-04  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-doubleword.md: Refine all the instruction type.
        * config/nds32/nds32.md: Ditto.
        * config/nds32/pipelines.md: Ditto.

2018-04-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85168
        * tree-ssa-sccvn.c (vn_reference_maybe_forwprop_address): Avoid
        propagating abnormals.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (enabled): Use yes/no for this attribute.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_long_call_p): New function.
        * config/nds32/nds32-protos.h (nds32_long_call_p): Declare.
        * config/nds32/nds32.c (nds32_function_ok_for_sibcall): New function.
        (TARGET_FUNCTION_OK_FOR_SIBCALL): Define.
        * config/nds32/nds32.md (sibcall_internal): New.
        (sibcall_register): Remove.
        (sibcall_immediate): Remove.
        (sibcall_value_internal): New.
        (sibcall_value_register): Remove.
        (sibcall_value_immediate): Remove.
        * config/nds32/predicates.md (nds32_general_register_operand): New.
        (nds32_call_address_operand): New.

2018-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85167
        * shrink-wrap.c (move_insn_for_shrink_wrap): Don't set bb_uses and
        bb_defs if *split_p, instead preinitialize it to NULL.

        PR tree-optimization/85156
        * builtins.c (fold_builtin_expect): Use save_expr on arg1 to avoid
        evaluating the argument multiple times.

2018-04-03  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/emmintrin.h (_mm_cvtpd_epi32): Use __vector rather
        than vector.
        (_mm_cvtpd_ps): Likewise.
        (_mm_cvttpd_epi32): Likewise.
        * config/rs6000/mmintrin.h (_mm_unpacklo_pi8): Likewise.
        * config/rs6000/xmmintrin.h: For strict-ANSI C++ or C11, undefine
        vector, pixel, and bool following altivec.h include.

2018-04-03  Martin Sebor  <msebor@redhat.com>

        * doc/extend.texi (Common Function Attributes): Clarify.
        (const attribute): Likewise.
        (pure attribute): Likewise.

2018-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR target/85169
        * config/i386/i386.c (ix86_expand_vector_set): Use
        HOST_WIDE_INT_1U << elt instead of 1 << elt.  Formatting fix.

2018-04-03  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (emit_i387_cw_initialization): Always use logic
        instructions when changing rounding bits to preserve precision bits
        in the x87 control word.

2018-04-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/82491
        * rtl.h (strip_offset_and_add): Replace += suboffset with
        poly_uint64 () + suboffset.

2018-03-29  Martin Liska  <mliska@suse.cz>
            Martin Jambor  <mjambor@suse.cz>

        PR ipa/84947
        * ipa-cp.c (propagate_bits_across_jump_function): Bail out if
        param_type is not an integral or pointer type.

2018-04-03  Richard Biener  <rguenther@suse.de>

        * sese.h (recompute_all_dominators): Remove.

2018-04-02  Martin Sebor  <msebor@redhat.com>

        * doc/invoke.texi (-Wrestrict): Fix typos.

2018-04-02  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.h (SHIFT_COUNT_TRUNCATED): Set to zero.
        * config/riscv/riscv.md (<optab>si3): Use QImode shift count.
        (<optab>di3, <optab>si3_extend): Likewise.
        (<optab>si3_mask, <optab>si3_mask_1): New.
        (<optab>di3_mask, <optab>di3_mask_1): New.
        (<optab>si3_extend_mask, <optab>si3_extend_mask_1): New.
        (lshrsi3_zero_extend_1): Use VOIDmode shift count.
        * config/riscv/sync.md (atomic_test_and_set): Emit QImode shift count.

2018-04-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/cpp.texi (Variadic Macros): Fix line continuation in an
        example.

2018-04-02  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (TARGET_CANONICALIZE_COMPARISON): Define.
        (nds32_canonicalize_comparison): New function.

2018-04-01  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Kuan-Lin Chen  <kuanlinchentw@gmail.com>

        * config.gcc (nds32): Add nds32-relax-opt.o into extra_objs.
        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_RELAX_GROUP.
        * config/nds32/nds32-relax-opt.c: New file.
        * config/nds32/nds32-predicates.c
        (nds32_symbol_load_store_p): New function.
        * config/nds32/nds32-protos.h
        (nds32_symbol_load_store_p): Declare function.
        (make_pass_nds32_relax_opt): Declare new rtl pass function.
        * config/nds32/nds32.c
        (nds32_register_pass): New function to register pass.
        (nds32_register_passes): New function to register passes.
        * config/nds32/nds32.md (relax_group): New pattern.
        * config/nds32/nds32.opt (mrelax-hint): New option.
        * config/nds32/t-nds32 (nds32-relax-opt.o): New dependency.

2018-04-01  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/t-nds32: Modify files dependency.

2018-04-01  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (FUNCTION_PROFILER): Output newline character.
        (PROFILE_HOOK): Define its implementation.

2018-04-01  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (WCHAR_TYPE, WCHAR_TYPE_SIZE): Use unsigned int
        type and 32-bit size.

2018-04-01  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85090
        * config/i386/sse.md (V): Add V64QI and V32HI for TARGET_AVX512F.
        (V_128_256): New mode iterator.
        (*avx512dq_vextract<shuffletype>64x2_1 splitter): New define_split.
        (*avx512f_vextract<shuffletype>32x4_1 splitter): Likewise.
        (xop_pcmov_<mode><avxsizesuffix>): Use V_128_256 mode iterator instead
        of V.
        * config/i386/i386.c (ix86_expand_vector_set): Improve V32HImode and
        V64QImode expansion for !TARGET_AVX512BW && TARGET_AVX512F.

2018-03-31  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/83315
        * config/rs6000/xmmintrin.h (_mm_set_ps, _mm_max_ps): Handle (quiet)
        NaN inputs correctly.

2018-03-30  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/80546
        * config/rs6000/vsx.md (??r): New mode attribute.
        (*vsx_mov<mode>_64bit): Use it.
        (*vsx_mov<mode>_32bit): Likewise.

2018-03-30  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84818
        * builtins.c (check_access): Use warning_n.

2018-03-30  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        PR target/83822
        * config/rs6000/rs6000-string.c (expand_compare_loop): Fix redundant
        condition.
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Fix redundant
        condition.

2018-03-30  Julia Koval  <julia.koval@intel.com>

        PR target/84413
        * x86-tune.def (movx, partial_reg_dependency): Enable for
        m_SKYLAKE_AVX512.

2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>

        PR inline-asm/84985
        * lra-constraints.c (process_alt_operands): Move setting
        this_alternative_matches below.

2018-03-29  Martin Liska  <mliska@suse.cz>

        PR lto/84995.
        * doc/invoke.texi: Document how LTO works with debug info.
        Describe auto-load support of binutils.  Mention 'x86-64'
        as valid option value of -march option.

2018-03-29  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/sse.md (<avx512>_blendm<mode>): Use <sseintprefix>.

        PR c/85094
        * fold-const.c (operand_equal_p): Handle DEBUG_BEGIN_STMT.
        For STATEMENT_LIST, pass down OEP_LEXICOGRAPHIC and maybe
        OEP_NO_HASH_CHECK for recursive call, to avoid exponential
        checking.

2018-03-28  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84912
        * config/rs6000/rs6000.h (RS6000_BTM_POWERPC64): New define.
        (RS6000_BTM_COMMON): Add RS6000_BTM_POWERPC64.
        * config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Add support
        for RS6000_BTM_POWERPC64.
        (rs6000_invalid_builtin): Add handling for RS6000_BTM_POWERPC64
        (rs6000_builtin_mask_names): Add RS6000_BTM_POWERPC64.
        * config/rs6000/rs6000-builtin.def (BU_P7_POWERPC64_MISC_2): New macro
        definition.
        (DIVDE): Use it.
        (DIVDEU): Likewise.

2018-03-28  Carl Love  <cel@us.ibm.com>

        Revert
        2017-09-27  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def (BU_FP_1MISC_1): Add define macro.
        (FCTID, FCTIW): Add BU_FP_MISC_1 macro expansion for builtins.
        * config/rs6000/rs6000.md (lrintsfsi2): Add define_insn for the
        fctiw instruction.

2018-03-28  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/xmmintrin.h (_mm_max_pi16): Use __vector __bool
        instead of __vector bool.
        (_mm_max_pu8): Likewise.
        (_mm_min_pi16): Likewise.

2018-03-28  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84912
        * config/rs6000/rs6000-builtin.def (DIVWEO): Delete macro expansion.
        (DIVWEUO): Likewise.
        (DIVDEO): Likewise.
        (DIVDEUO): Likewise.
        * config/rs6000/rs6000.c (builtin_function_type): Remove support for
        DIVWEUO and DIVDEUO.
        * config/rs6000/rs6000.md (UNSPEC_DIVEO, UNSPEC_DIVEUO): Delete unspecs.
        (UNSPEC_DIV_EXTEND): Remove deleted unspecs.
        (div_extend): Likewise.
        * doc/extend.texi (__builtin_divweo): Remove documentation for deleted
        builtin function.
        (__builtin_divweuo): Likewise.
        (__builtin_divdeo): Likewise.
        (__builtin_divdeuo): Likewise.

2018-03-28  Jakub Jelinek  <jakub@redhat.com>

        PR target/85095
        * config/i386/i386.md (*add<mode>3_carry_0, *addsi3_carry_zext_0,
        *sub<mode>3_carry_0, *subsi3_carry_zext_0): New patterns.

        PR tree-optimization/82004
        * gimple-match-head.c (optimize_pow_to_exp): New function.
        * match.pd (pow(C,x) -> exp(log(C)*x)): Wrap with #if GIMPLE.
        Don't fold to exp if optimize_pow_to_exp is false.

2018-03-28  Martin Liska  <mliska@suse.cz>

        PR other/84819
        * calls.c (initialize_argument_information): Fix trailing space.
        * common.opt: Fix typo and provide better explanation for
        -fsanitize-coverage option.
        * config/i386/i386.opt: Fix typo.

2018-03-28  Jakub Jelinek  <jakub@redhat.com>
            Martin Liska  <mliska@suse.cz>

        PR sanitizer/85081
        * gimplify.c (asan_poison_variable): Don't do the check for
        gimplify_omp_ctxp here.
        (gimplify_decl_expr): Do it here.
        (gimplify_target_expr): Likewise.

2018-03-28  Martin Liska  <mliska@suse.cz>

        PR target/84988
        * config/i386/i386.c (ix86_function_arg_advance): Do not call
        chkp_type_bounds_count if MPX is not enabled.

2018-03-27  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (BRANCH_COST): Adjust cost.

2018-03-27  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/84914
        * config/rs6000/rs6000.c (create_complex_muldiv): New helper
        function to create the function decl for complex long double
        multiply and divide for -mabi=ieeelongdouble.
        (init_float128_ieee): Call it.

2018-03-27  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85044
        * config/i386/i386.c (ix86_trampoline_init): Insert ENDBR for
        -fcf-protection=branch -mibt.
        * config/i386/i386.h (TRAMPOLINE_SIZE): Increased by 4 bytes.

2018-03-27  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR target/81863
        * config/arm/arm.c (arm_valid_symbolic_address): Handle
        arm_word_relocations.

2018-03-27  Cesar Philippidis  <cesar@codesourcery.com>

        PR target/85056
        * config/nvptx/nvptx.c (nvptx_assemble_decl_begin): Add '[]' to
        extern array declarations.

2018-03-27  Richard Biener  <rguenther@suse.de>

        PR middle-end/84067
        * match.pd ((A * C) +- (B * C) -> (A+-B) * C): Guard with
        explicit single_use checks.

2018-03-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85082
        * tree-ssa-sccvn.c (vn_reference_lookup_or_insert_for_pieces):
        Valueize the VUSE.

2018-03-27  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config.gcc (aarch64*-*-linux*): New TARGET_DEFAULT_ASYNC_UNWIND_TABLES
        * common/config/aarch64/aarch64-common.c (aarch64_optimization_table[]):
        Turn on fasynchronous-unwind-tables and funwind-tables.

2018-03-26  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85073
        * config/i386/i386.md (*bmi_blsr_<mode>_cmp): New insn pattern.
        (*bmi_blsr_<mode>_ccz): Ditto.

2018-03-26  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/85063
        * omp-general.c (offloading_function_p): New function.  Factor out
        of ...
        * omp-offload.c (pass_omp_target_link::gate): ... here.
        * omp-general.h (offloading_function_p): Declare.
        * tree-switch-conversion.c (build_one_array): Mark CSWTCH.x variable
        with attribute omp declare target for offloading functions.

2018-03-24  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84005
        * tree-data-ref.h (get_base_for_alignment): Declare.
        * tree-data-ref.c (get_base_for_alignment_1): New function.
        (get_base_for_alignment): Likewise.
        * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Use
        get_base_for_alignment to find a suitable base object, instead
        of always using drb->base_address.

2018-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/85022
        * emit-rtl.c (init_emit_regs): Indicate that VOIDmode MEMs don't have
        known size by default.

2018-03-23  Vladimir Makarov  <vmakarov@redhat.com>

        PR inline-asm/85030
        * lra-constraints.c (process_alt_operands): Don't match BLKmode
        and non BLKmode operands.

2018-03-23  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85026
        * config/arm/arm.md (unaligned_loadhis): Remove first alternative.
        Clean up attributes.

2018-03-23  Richard Biener  <rguenther@suse.de>

        PR debug/85020
        * dwarf2out.c (rtl_for_decl_location): Do not generate RTL early when
        we are going to emit early debug for LTO.

2018-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/85034
        * function.c (match_asm_constraints_1): Don't optimize if input
        doesn't satisfy general_operand predicate for output's mode.

        PR inline-asm/85022
        * alias.c (write_dependence_p): Don't require for x_canonicalized
        non-VOIDmode if x has VOIDmode.

        PR sanitizer/85029
        * sanopt.c (maybe_optimize_ubsan_ptr_ifn): If DECL_REGISTER (base),
        just don't try to optimize it rather than assert it never happens.

2018-03-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-builtin.def: Remove various BU_ALTIVEC_X
        macro expansions for definition of ST_INTERNAL_<mode> and
        LD_INTERNAL_<mode> builtins.
        * config/rs6000/rs6000-protos.h (rs6000_address_for_altivec):
        Remove prototype.
        * config/rs6000/rs6000.c (altivec_expand_ld_builtin): Delete this
        function.
        (altivec_expand_st_builtin): Likewise.
        (altivec_expand_builtin): Remove calls to deleted functions.
        (rs6000_address_for_altivec): Delete this function.
        * config/rs6000/vector.md: Remove expands for
        vector_altivec_load_<mode> and vector_altivec_store_<mode>.

2018-03-22  Sudakshina Das  <sudi.das@arm.com>

        PR target/84826
        * config/arm/arm.h (machine_function): Add static_chain_stack_bytes.
        * config/arm/arm.c (arm_compute_static_chain_stack_bytes): Avoid
        re-computing once computed.
        (arm_expand_prologue): Compute machine->static_chain_stack_bytes.
        (arm_init_machine_status): Initialize
        machine->static_chain_stack_bytes.

2018-03-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        PR target/84760
        * doc/extend.texi: Add four new prototypes for vec_ld.
        * config/rs6000/rs6000-builtin.def (LVX_V1TI): Reorder symbol
        definitions for more logical presentation.
        * config/rs6000/rs6000-c.c: (altivec_overloaded_builtins): Add
        entries for V1TI variants of __builtin_altivec_ld builtin.
        * config/rs6000/rs6000.c: (altivec_expand_lv_builtin): Add test and
        handling of V1TI variant of LVX icode pattern.
        (altivec_expand_builtin): Add case for ALTIVEC_BUILTIN_LVX_V1TI.
        (rs6000_gimple_fold_builtin): Likewise.
        (altivec_init_builtins): Add code to define
        __builtin_altivec_lvx_v1ti function.

2018-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/84941
        * function.c (match_asm_constraints_1): Don't do the optimization
        if input isn't a REG, SUBREG, MEM or constant.

2018-03-22  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/84956
        * tree-ssa-tail-merge.c (find_clusters_1): Skip bbs with
        bb_has_abnormal_pred.

2018-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/85018
        * dwarf2asm.c (dw2_output_indirect_constant_1): Set
        DECL_INITIAL (decl) to decl at the end.
        * varasm.c (use_blocks_for_decl_p): Revert the 2018-03-20 change,
        adjust the comment.

2018-03-21  Joseph Myers  <joseph@codesourcery.com>

        * doc/extend.texi (__builtin_tgmath): Document when complex
        integer types are treated as _Complex _Float64.

2018-03-21  Tom de Vries  <tom@codesourcery.com>

        * doc/extend.texi (__builtin_extend_pointer): Remove pasto.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84960
        * tree-cfg.c (remove_bb): Don't move forced labels into bb->prev_bb
        if it is ENTRY block, move them into single succ of ENTRY in that case.

2018-03-21  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84811
        * poly-int.h (poly_span_traits): Remove the T3 parameter and
        promote HOST_WIDE_INT T2 - T1 results to unsigned HOST_WIDE_INT.
        (maybe_in_range_p, known_in_range_p, ranges_known_overlap_p):
        (known_subrange_p): Update accordingly.  Cast each value involved
        in the size comparison, rather than casting the result of the
        subtraction.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84982
        * gimple-ssa-store-merging.c (invert_op): Handle boolean inversion
        by flipping the least significant bit rather than all bits from
        bitpos to bitpos + bitsize - 1.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Deprecated Features): Remove mention of
        long-deleted deprecations.

2018-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR jit/84288
        * configure.ac (gcc_cv_ld_soname) <*-*-solaris2*>: Set.
        * configure: Regenerate.

2018-03-21  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/83126
        * tree-parloops.c (num_phis): New function.
        (gen_parallel_loop): Detect and handle canonicalize_loop_ivs failure.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Deprecated Features): Update deprecated flags,
        mention anon-struct/union members and trailing attributes.

2018-03-21  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/84969
        * tree-loop-distribution.c (fuse_memset_builtins): Don't reorder
        builtin memset partitions if they set different rhs values.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/84989
        * simplify-rtx.c (simplify_unary_operation_1): Don't try to simplify
        VEC_DUPLICATE with scalar result mode.

2018-03-21  Martin Liska  <mliska@suse.cz>

        PR ipa/84963
        * ipa-icf.c (sem_item_optimizer::fixup_points_to_sets): Remove
        not intended return statement.

2018-03-21  Martin Liska  <mliska@suse.cz>

        PR target/84988
        * tree-chkp.c (CHKP_ARRAY_MAX_CHECK_STEPS): Define a new macro.
        (chkp_find_bound_slots_1): Limit number of iterations.

2018-03-20  David H. Gutteridge  <dhgutteridge@sympatico.ca>

        PR target/84838
        * Minor grammar fixes for x86 options.

2018-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84875
        * dce.c (delete_unmarked_insns): Don't remove frame related noop moves
        holding REG_CFA_RESTORE notes, instead turn them into a USE.

2018-03-20  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83789
        * config/rs6000/altivec.md (altivec_lvx_<mode>_2op): Delete define_insn.
        (altivec_lvx_<mode>_1op): Likewise.
        (altivec_stvx_<mode>_2op): Likewise.
        (altivec_stvx_<mode>_1op): Likewise.
        (altivec_lvx_<VM2:mode>): New define_expand.
        (altivec_stvx_<VM2:mode>): Likewise.
        (altivec_lvx_<VM2:mode>_2op_<P:mptrsize>): New define_insn.
        (altivec_lvx_<VM2:mode>_1op_<P:mptrsize>): Likewise.
        (altivec_stvx_<VM2:mode>_2op_<P:mptrsize>): Likewise.
        (altivec_stvx_<VM2:mode>_1op_<P:mptrsize>): Likewise.
        * config/rs6000/rs6000-p8swap.c (rs6000_gen_stvx): Use new expanders.
        (rs6000_gen_lvx): Likewise.
        * config/rs6000/rs6000.c (altivec_expand_lv_builtin): Likewise.
        (altivec_expand_stv_builtin): Likewise.
        (altivec_expand_builtin): Likewise.
        * config/rs6000/vector.md: Likewise.

2018-03-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/82518
        * config/arm/arm.c (arm_array_mode_supported_p): Return false for
        BYTES_BIG_ENDIAN.

2018-03-20  Richard Biener  <rguenther@suse.de>

        PR target/84986
        * config/i386/i386.c (ix86_add_stmt_cost): Only cost
        sign-conversions as zero, fall back to standard scalar_stmt
        cost for the rest.

2018-03-20  Martin Liska  <mliska@suse.cz>

        PR ipa/84825
        * predict.c (rebuild_frequencies): Handle case when we have
        PROFILE_ABSENT, but flag_guess_branch_prob is false.

2018-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/84990
        * dwarf2asm.c (dw2_output_indirect_constant_1): Temporarily turn off
        flag_section_anchors.
        * varasm.c (use_blocks_for_decl_p): Remove hack for
        dw2_force_const_mem.

        PR target/84845
        * config/aarch64/aarch64.md (*aarch64_reg_<mode>3_neg_mask2): Rename
        to ...
        (*aarch64_<optab>_reg_<mode>3_neg_mask2): ... this.  If pseudos can't
        be created, use lowpart_subreg of operands[0] rather than operands[0]
        itself.
        (*aarch64_reg_<mode>3_minus_mask): Rename to ...
        (*aarch64_ashl_reg_<mode>3_minus_mask): ... this.
        (*aarch64_<optab>_reg_di3_mask2): Use const_int_operand predicate
        and n constraint instead of aarch64_shift_imm_di and Usd.
        (*aarch64_reg_<optab>_minus<mode>3): Rename to ...
        (*aarch64_<optab>_reg_minus<mode>3): ... this.

2018-03-20  Sudakshina Das  <sudi.das@arm.com>

        PR target/82989
        * config/arm/neon.md (ashldi3_neon): Update ?s for constraints
        to favor GPR over NEON registers.
        (<shift>di3_neon): Likewise.

2018-03-20  Tom de Vries  <tom@codesourcery.com>

        PR target/84952
        * config/nvptx/nvptx.c (nvptx_single): Don't neuter bar.sync.
        (nvptx_process_pars): Emit bar.sync asap and alap.

2018-03-20  Tom de Vries  <tom@codesourcery.com>

        PR target/84954
        * config/nvptx/nvptx.c (prevent_branch_around_nothing): Also update
        seen_label if seen_label is already set.

2018-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/84945
        * config/i386/i386.c (fold_builtin_cpu): For features above 31
        use __cpu_features2 variable instead of __cpu_model.__cpu_features[0].
        Use 1U instead of 1.  Formatting fixes.

        PR c/84953
        * builtins.c (fold_builtin_strpbrk): For strpbrk(x, "") use type
        instead of TREE_TYPE (s1) for the return value.

2018-03-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84946
        * gimple-ssa-store-merging.c (mem_valid_for_store_merging): Compute
        bitsize + bitsize in poly_uint64 rather than poly_int64.

        PR sanitizer/78651
        * dwarf2asm.c: Include fold-const.c.
        (dw2_output_indirect_constant_1): Set DECL_INITIAL (decl) to ADDR_EXPR
        of decl rather than decl itself.

        PR rtl-optimization/84643
        * memmodel.h (enum memmodel): Add MEMMODEL_MAX enumerator.

2018-03-19  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR sanitizer/78651
        * dwarf2asm.c (dw2_output_indirect_constant_1): Disable ASan before
        calling assemble_variable.

2018-03-19  Sudakshina Das  <sudi.das@arm.com>

        PR target/81647
        * config/aarch64/aarch64-simd.md (vec_cmp<mode><v_int_equiv>): Modify
        instructions for UNLT, UNLE, UNGT, UNGE, UNEQ, UNORDERED and ORDERED.

2018-03-19  Jim Wilson  <jimw@sifive.com>

        PR bootstrap/84856
        * config/riscv/riscv.c (riscv_function_arg_boundary): Use
        PREFERRED_STACK_BOUNDARY instead of STACK_BOUNDARY.
        (riscv_first_stack_step): Likewise.
        (riscv_option_override): Use STACK_BOUNDARY instead of
        MIN_STACK_BOUNDARY.
        * config/riscv/riscv.h (STACK_BOUNDARY): Renamed from
        MIN_STACK_BOUNDARY.
        (BIGGEST_ALIGNMENT): Set to 128.
        (PREFERRED_STACK_BOUNDARY): Renamed from STACK_BOUNDARY.
        (RISCV_STACK_ALIGN): Use PREFERRED_STACK_BOUNDARY instead of
        STACK_BOUNDARY.

2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84933
        * tree-vrp.c (set_and_canonicalize_value_range): Treat out-of-bound
        values as -INF/INF when canonicalizing an ANTI_RANGE to a RANGE.

2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84859
        * tree-ssa-phiopt.c (single_trailing_store_in_bb): New function.
        (cond_if_else_store_replacement): Perform sinking operation on
        single-store BBs regardless of MAX_STORES_TO_SINK setting.
        Generalize what a BB with a single eligible store is.

2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84929
        * tree-data-ref.c (analyze_siv_subscript_cst_affine): Guard
        chrec_is_positive against non-chrec arg.

2018-03-19  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/arm.c (arm_can_change_mode_class): revert r258554.

2018-03-18  Martin Liska  <mliska@suse.cz>

        PR rtl-optimization/84635
        * regrename.c (build_def_use): Use matches_mode only when
        matches >= 0.

2018-03-18  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84913
        * tree-vect-loop.c (vectorizable_reduction): Don't try to
        vectorize chains of COND_EXPRs.

2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (MAX_REGS_PER_ADDRESS): Fix the value.

2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (LOGICAL_OP_NON_SHORT_CIRCUIT): Define.

2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.

2018-03-17  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-protos.h (nds32_adjust_reg_alloc_order): Declare.
        * config/nds32/nds32.c (nds32_reg_alloc_order_for_speed): New array.
        (nds32_adjust_reg_alloc_order): New function.
        * config/nds32/nds32.h (ADJUST_REG_ALLOC_ORDER): Define.

2018-03-17  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32.c (nds32_asm_output_mi_thunk,
        nds32_print_operand, nds32_print_operand_address): Use
        HOST_WIDE_INT_PRINT_DEC instead.

2018-03-17  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_register_priority): Modify cost.

2018-03-17  Jakub Jelinek  <jakub@redhat.com>

        PR target/84902
        * config/i386/i386.c (initial_ix86_tune_features,
        initial_ix86_arch_features): Use unsigned HOST_WIDE_INT rather than
        unsigned long long.
        (set_ix86_tune_features): Change ix86_tune_mask from unsigned int
        to unsigned HOST_WIDE_INT, initialize to HOST_WIDE_INT_1U << ix86_tune
        rather than 1u << ix86_tune.  Formatting fix.
        (ix86_option_override_internal): Change ix86_arch_mask from
        unsigned int to unsigned HOST_WIDE_INT, initialize to
        HOST_WIDE_INT_1U << ix86_arch rather than 1u << ix86_arch.
        (ix86_function_specific_restore): Likewise.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/84899
        * postreload.c (reload_combine_recognize_pattern): Perform
        INTVAL addition in unsigned HOST_WIDE_INT type to avoid UB and
        truncate_int_for_mode the result for the destination's mode.

        PR c/84909
        * hsa-gen.c (mem_type_for_type): Fix comment typo.
        * tree-vect-loop-manip.c (vect_create_cond_for_niters_checks):
        Likewise.
        * gimple-ssa-warn-restrict.c (builtin_memref::set_base_and_offset):
        Likewise.

2018-03-16  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/84876
        * lra-assigns.c (lra_split_hard_reg_for): Don't use
        regno_allocno_class_array and sorted_pseudos.
        * lra-constraints.c (spill_hard_reg_in_range): Ignore hard regs in
        insns where regno is used.

2018-03-16  Martin Liska  <mliska@suse.cz>

        PR ipa/84833
        * multiple_target.c (create_dispatcher_calls): Redirect
        reference in the symbol table.

2018-03-16  Martin Liska  <mliska@suse.cz>

        PR ipa/84722
        * multiple_target.c (create_dispatcher_calls): Redirect also
        an alias.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79937
        PR c++/82410
        * tree.h (TARGET_EXPR_NO_ELIDE): Define.
        * gimplify.c (gimplify_modify_expr_rhs): Don't elide TARGET_EXPRs with
        TARGET_EXPR_NO_ELIDE flag set unless *expr_p is INIT_EXPR.

2018-03-16  Julia Koval  <julia.koval@intel.com>

        * doc/invoke.texi (Skylake Server): Add CLWB.
        Cannonlake): Remove CLWB.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84841
        * tree-ssa-reassoc.c (INTEGER_CONST_TYPE): Change to 1 << 4 from
        1 << 3.
        (FLOAT_ONE_CONST_TYPE): Define.
        (constant_type): Return FLOAT_ONE_CONST_TYPE for -1.0 and 1.0.
        (sort_by_operand_rank): Put entries with higher constant_type last
        rather than first to match comments.

2018-03-15  Sandra Loosemore  <sandra@codesourcery.com>

        * config/nios2/nios2.md (movsi_internal): Fix thinko in
        split predicate.

2018-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79085
        * calls.c (expand_call): For TREE_ADDRESSABLE rettype ignore alignment
        check and use address of target always.

2018-03-15  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84574
        * config/i386/i386.c (indirect_thunk_needed): Update comments.
        (indirect_thunk_bnd_needed): Likewise.
        (indirect_thunks_used): Likewise.
        (indirect_thunks_bnd_used): Likewise.
        (indirect_return_needed): New.
        (indirect_return_bnd_needed): Likewise.
        (output_indirect_thunk_function): Add a bool argument for
        function return.
        (output_indirect_thunk_function): Don't generate alias for
        function return thunk.
        (ix86_code_end): Call output_indirect_thunk_function to generate
        function return thunks.
        (ix86_output_function_return): Set indirect_return_bnd_needed
        and indirect_return_needed instead of indirect_thunk_bnd_needed
        and indirect_thunk_needed.

2018-03-15  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/sgxintrin.h (_enclv_u32): New intrinsic.
        (__enclv_bc, __enclv_cd, __enclv_generic): New definitions.
        (ERDINFO, ETRACKC, ELDBC, ELDUC): New leaves.

2018-03-15  David Malcolm  <dmalcolm@redhat.com>
            Paul Hua <paul.hua.gm@gmail.com>

        PR c/84852
        * gcc.dg/fixits-pr84852-1.c: Fix filename in dg-regexp.

2018-03-15  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (abi_v4_pass_in_fpr): Add back the
        TARGET_DOUBLE_FLOAT and TARGET_SINGLE_FLOAT conditions on the DFmode
        resp. SFmode cases.

2018-03-15  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/arm.c (arm_can_change_mode_class): Use GET_MODE_UNIT_SIZE
        instead of GET_MODE_SIZE when comparing Units.

2018-03-15  Vladimir Mezentsev  <vladimir.mezentsev@oracle.com>

        PR target/68256
        * varasm.c (hash_section): Return an unchangeble hash value
        * config/aarch64/aarch64.c (aarch64_use_blocks_for_constant_p):
        Return !aarch64_can_use_per_function_literal_pools_p ().

2018-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR target/84860
        * optabs.c (emit_conditional_move): Pass address of cmode's copy
        rather than address of cmode as last argument to prepare_cmp_insn.

2018-03-15  Julia Koval  <julia.koval@intel.com>

        * config/i386/i386.c (F_AVX512VBMI2, F_GFNI, F_VPCLMULQDQ,
        F_AVX512VNNI, F_AVX512BITALG): New.

2018-03-14  John David Anglin  <danglin@gcc.gnu.org>

        PR target/83451
        * config/pa/pa.c (pa_emit_move_sequence):  Always emit secondary reload
        insn for floating-point loads and stores.

2018-03-14  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-c.c: Add macro definitions for
        ALTIVEC_BUILTIN_VEC_PERMXOR.
        * config/rs6000/rs6000.h: Add #define for vec_permxor builtin.
        * config/rs6000/rs6000-builtin.def: Add macro expansions for VPERMXOR.
        * config/rs6000/altivec.md (altivec_vpermxor): New define expand.
        * config/rs6000/rs6000-p8swap.c (rtx_is_swappable_p): Add case
        UNSPEC_VPERMXOR.
        * config/doc/extend.texi: Add prototypes for vec_permxor.

2018-03-14  David Malcolm  <dmalcolm@redhat.com>

        PR c/84852
        * diagnostic-show-locus.c (class layout_point): Convert m_line
        from int to linenum_type.
        (line_span::comparator): Use linenum "compare" function when
        comparing line numbers.
        (test_line_span): New function.
        (layout_range::contains_point): Convert param "row" from int to
        linenum_type.
        (layout_range::intersects_line_p): Likewise.
        (layout::will_show_line_p): Likewise.
        (layout::print_source_line): Likewise.
        (layout::should_print_annotation_line_p): Likewise.
        (layout::print_annotation_line): Likewise.
        (layout::print_leading_fixits): Likewise.
        (layout::annotation_line_showed_range_p): Likewise.
        (struct line_corrections): Likewise for field m_row.
        (line_corrections::line_corrections): Likewise for param "row".
        (layout::print_trailing_fixits): Likewise.
        (layout::get_state_at_point): Likewise.
        (layout::get_x_bound_for_row): Likewise.
        (layout::print_line): Likewise.
        (diagnostic_show_locus): Likewise for locals "last_line" and "row".
        (selftest::diagnostic_show_locus_c_tests): Call test_line_span.
        * input.c (selftest::test_linenum_comparisons): New function.
        (selftest::input_c_tests): Call it.
        * selftest.c (selftest::test_assertions): Test ASSERT_GT,
        ASSERT_GT_AT, ASSERT_LT, and ASSERT_LT_AT.
        * selftest.h (ASSERT_GT): New macro.
        (ASSERT_GT_AT): New macro.
        (ASSERT_LT): New macro.
        (ASSERT_LT_AT): New macro.

2018-03-14  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/84780
        * combine.c (distribute_links): Don't make a link based on pc_rtx.

2018-03-14  Martin Liska  <mliska@suse.cz>

        * tree.c (record_node_allocation_statistics): Use
        get_stats_node_kind.
        (get_stats_node_kind): New function extracted from
        record_node_allocation_statistics.
        (free_node): Use get_stats_node_kind.

2018-03-14  Richard Biener  <rguenther@suse.de>

        * tree-ssa-pre.c (compute_antic_aux): Remove code that asserts
        that the value-set of ANTIC_IN doesn't grow.

        Revert
        * tree-ssa-pre.c (struct bb_bitmap_sets): Add visited_with_visited_succs
        member.
        (BB_VISITED_WITH_VISITED_SUCCS): New define.
        (compute_antic): Initialize BB_VISITED_WITH_VISITED_SUCCS.

2018-03-14  Julia Koval  <julia.koval@intel.com>

        * config.gcc (icelake-client, icelake-server): New.
        (icelake): Remove.
        * config/i386/i386.c (initial_ix86_tune_features): Extend to 64 bit.
        (initial_ix86_arch_features): Ditto.
        (PTA_SKYLAKE): Add SGX.
        (PTA_ICELAKE): Remove.
        (PTA_ICELAKE_CLIENT): New.
        (PTA_ICELAKE_SERVER): New.
        (ix86_option_override_internal): Split up icelake on icelake client and
        icelake server.
        (get_builtin_code_for_version): Ditto.
        (fold_builtin_cpu): Ditto.
        * config/i386/driver-i386.c (config/i386/driver-i386.c): Ditto.
        * config/i386/i386-c.c (ix86_target_macros_internal): Ditto
        * config/i386/i386.h (processor_type): Ditto.
        * doc/invoke.texi: Ditto.

2018-03-14  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83392
        * sanopt.c (maybe_optimize_ubsan_ptr_ifn): Handle also
        INTEGER_CST offset, add it together with bitpos / 8 and
        sign extend based on POINTER_SIZE.

        PR target/84844
        Revert
        2017-04-20  Uros Bizjak  <ubizjak@gmail.com>

        PR target/78090
        * config/i386/constraints.md (Yc): New register constraint.
        * config/i386/i386.md (*float<SWI48:mode><MODEF:mode>2_mixed):
        Use Yc constraint for alternative 2 of operand 0.  Remove
        preferred_for_speed attribute.

2018-03-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84830
        * tree-ssa-pre.c (compute_antic_aux): Intersect the new ANTIC_IN
        with the old one to avoid oscillations.

2018-03-13  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/83712
        * lra-assigns.c (find_all_spills_for): Ignore uninteresting
        pseudos.
        (assign_by_spills): Return a flag of reload assignment failure.
        Do not process the reload assignment failures.  Do not spill other
        reload pseudos if they has the same reg class.  Update n if
        necessary.
        (lra_assign): Add a return arg.  Set up from the result of
        assign_by_spills call.
        (find_reload_regno_insns, lra_split_hard_reg_for): New functions.
        * lra-constraints.c (split_reg): Add a new arg.  Use it instead of
        usage_insns if it is not NULL.
        (spill_hard_reg_in_range): New function.
        (split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
        * lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
        function prototypes.
        (lra_assign): Change prototype.
        * lra.c (lra): Add code to deal with fails by splitting hard reg
        live ranges.

2018-03-01  Palmer Dabbelt  <palmer@sifive.com>

        * config/riscv/riscv.opt (mrelax): New option.
        * config/riscv/riscv.c (riscv_file_start): Emit ".option
        "norelax" when riscv_mrelax is disabled.
        * doc/invoke.texi (RISC-V): Document "-mrelax" and "-mno-relax".

2018-03-13  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        PR target/84743
        * config/rs6000/rs6000.c (rs6000_reassociation_width): Disable parallel
        reassociation for int modes.

2018-03-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-loop-manip.c (vect_maybe_permute_loop_masks):
        Reverse the choice between VEC_UNPACK_LO_EXPR and VEC_UNPACK_HI_EXPR
        for big-endian.
        * config/aarch64/iterators.md (hi_lanes_optab): New int attribute.
        * config/aarch64/aarch64-sve.md
        (*aarch64_sve_<perm_insn><perm_hilo><mode>): Rename to...
        (aarch64_sve_<perm_insn><perm_hilo><mode>): ...this.
        (*extend<mode><Vwide>2): Rename to...
        (aarch64_sve_extend<mode><Vwide>2): ...this.
        (vec_unpack<su>_<perm_hilo>_<mode>): Turn into a define_expand,
        renaming the old pattern to...
        (aarch64_sve_punpk<perm_hilo>_<mode>): ...this.  Only define
        unsigned packs.
        (vec_unpack<su>_<perm_hilo>_<SVE_BHSI:mode>): Turn into a
        define_expand, renaming the old pattern to...
        (aarch64_sve_<su>unpk<perm_hilo>_<SVE_BHSI:mode>): ...this.
        (*vec_unpacku_<perm_hilo>_<mode>_no_convert): Delete.
        (vec_unpacks_<perm_hilo>_<mode>): Take BYTES_BIG_ENDIAN into
        account when deciding which SVE instruction the optab should use.
        (vec_unpack<su_optab>_float_<perm_hilo>_vnx4si): Likewise.

2018-03-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.md (V4_REGNUM, V8_REGNUM, V12_REGNUM)
        (V20_REGNUM, V24_REGNUM, V28_REGNUM, P1_REGNUM, P2_REGNUM, P3_REGNUM)
        (P4_REGNUM, P5_REGNUM, P6_REGNUM, P8_REGNUM, P9_REGNUM, P10_REGNUM)
        (P11_REGNUM, P12_REGNUM, P13_REGNUM, P14_REGNUM): New define_constants.
        (tlsdesc_small_<mode>): Turn a define_expand and use
        tlsdesc_small_sve_<mode> for SVE.  Rename original define_insn to...
        (tlsdesc_small_advsimd_<mode>): ...this.
        (tlsdesc_small_sve_<mode>): New pattern.

2018-03-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/iterators.md (UNSPEC_SMUL_HIGHPART)
        (UNSPEC_UMUL_HIGHPART): New constants.
        (MUL_HIGHPART): New int iteraor.
        (su): Handle UNSPEC_SMUL_HIGHPART and UNSPEC_UMUL_HIGHPART.
        * config/aarch64/aarch64-sve.md (<su>mul<mode>3_highpart): New
        define_expand.
        (*<su>mul<mode>3_highpart): New define_insn.

2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR lto/84805
        * ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
        incomplete types.

2018-03-13  Martin Liska  <mliska@suse.cz>

        PR ipa/84658.
        * (sem_item_optimizer::sem_item_optimizer): Initialize new
        vector.
        (sem_item_optimizer::~sem_item_optimizer): Release it.
        (sem_item_optimizer::merge_classes): Register variable aliases.
        (sem_item_optimizer::fixup_pt_set): New function.
        (sem_item_optimizer::fixup_points_to_sets): Likewise.
        * ipa-icf.h: Declare new variables and functions.

2018-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/84834
        * match.pd ((A & C) != 0 ? D : 0): Use INTEGER_CST@2 instead of
        integer_pow2p@2 and test integer_pow2p in condition.
        (A < 0 ? C : 0): Similarly for @1.

        PR middle-end/84831
        * stmt.c (parse_output_constraint): If the CONSTRAINT_LEN (*p, p)
        characters starting at p contain '\0' character, don't look beyond
        that.

        PR target/84827
        * config/i386/i386.md (round<mode>2): For 387 fancy math, disable
        pattern if -ftrapping-math -fno-fp-int-builtin-inexact.

        PR target/84828
        * reg-stack.c (change_stack): Change update_end var from int to
        rtx_insn *, if non-NULL don't update just BB_END (current_block), but
        also call set_block_for_insn on the newly added insns and rescan.

        PR target/84786
        * config/i386/sse.md (sse2_loadhpd): Use Yv constraint rather than v
        on the last operand.

        PR c++/84704
        * tree.c (stabilize_reference_1): Return save_expr (e) for
        STATEMENT_LIST even if it doesn't have side-effects.

2018-03-12  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-mclflushopt): Fix spelling of option.

2018-03-12  Renlin Li  <renlin.li@arm.com>

        * config/aarch64/aarch64.md (movhf_aarch64): Fix mode argument to
        aarch64_output_scalar_simd_mov_immediate.

2018-03-12  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83456
        * gimple-fold.c (gimple_fold_builtin_memory_op): Avoid warning
        for perfectly overlapping calls to memcpy.
        (gimple_fold_builtin_memory_chk): Same.
        (gimple_fold_builtin_strcpy): Handle no-warning.
        (gimple_fold_builtin_stxcpy_chk): Same.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Handle no-warning.

2018-03-12  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (abi_v4_pass_in_fpr): Add bool "named"
        parameter.  Use it for SFmode.
        (rs6000_function_arg_advance_1): Adjust.
        (rs6000_function_arg): Adjust.
        (rs6000_gimplify_va_arg): Pass false for that new parameter.

2018-03-12  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/84169
        PR rtl-optimization/84780
        * combine.c (can_combine_p): Check for a 2-insn combination whether
        the destination register is used between the two insns, too.

2018-03-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84803
        * tree-if-conv.c (ifcvt_memrefs_wont_trap): Don't do anything
        for refs DR analysis didn't process.

2018-03-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84777
        * tree-ssa-loop-ch.c (should_duplicate_loop_header_p): For
        force-vectorize loops ignore whether we are optimizing for size.

2018-03-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_md_asm_adjust): New function.
        (TARGET_MD_ASM_ADJUST): Define.

2018-03-12  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_compute_stack_frame,
        nds32_emit_stack_push_multiple, nds32_emit_stack_pop_multiple,
        nds32_emit_stack_v3push, nds32_emit_stack_v3pop,
        nds32_emit_adjust_frame, nds32_expand_prologue, nds32_expand_epilogue,
        nds32_expand_prologue_v3push, nds32_expand_epilogue_v3pop): Refine.
        * config/nds32/nds32.h (NDS32_FIRST_CALLEE_SAVE_GPR_REGNUM,
        NDS32_LAST_CALLEE_SAVE_GPR_REGNUM, NDS32_V3PUSH_AVAILABLE_P): New.
        * config/nds32/nds32.md (prologue, epilogue): Use macro
        NDS32_V3PUSH_AVAILABLE_P to do checking.

2018-03-11  Jakub Jelinek  <jakub@redhat.com>

        PR debug/58150
        * dwarf2out.c (gen_enumeration_type_die): Don't guard adding
        DW_AT_declaration for ENUM_IS_OPAQUE on -gdwarf-4 or -gno-strict-dwarf,
        but on TYPE_SIZE.  Don't do anything for ENUM_IS_OPAQUE if not creating
        a new die.  Don't set TREE_ASM_WRITTEN if ENUM_IS_OPAQUE.  Guard
        addition of most attributes on !orig_type_die or the attribute not
        being present already.  Assert TYPE_VALUES is NULL for ENUM_IS_OPAQUE.

2018-03-11  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_cpu_cpp_builtins): Modify to define
        __NDS32_VH__ macro.
        * config/nds32/nds32.opt (mvh): New option.

2018-03-11  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_cpu_cpp_builtins): Declare
        function.
        * config/nds32/nds32.c (nds32_cpu_cpp_builtins): New function.
        * config/nds32/nds32.h (TARGET_CPU_CPP_BUILTINS): Modify its
        definition.

2018-03-11  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-memory-manipulation.c (nds32_expand_strlen): New
        function.
        * config/nds32/nds32-multiple.md (strlensi): New pattern.
        * config/nds32/nds32-protos.h (nds32_expand_strlen): Declare function.

2018-03-11  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_element): Add UNSPEC_FFB,
        UNSPEC_FFMISM and UNSPEC_FLMISM.
        * config/nds32/nds32-intrinsic.c (bdesc_2arg): Add builtin description
        for ffb, ffmism and flmism.
        * config/nds32/nds32-intrinsic.md (unspec_ffb): Define new pattern.
        (unspec_ffmism): Ditto.
        (unspec_flmism): Ditto.
        (nds32_expand_builtin_impl): Check if string extension is available.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_FFB,
        NDS32_BUILTIN_FFMISM and NDS32_BUILTIN_FLMISM.

2018-03-10  Vladimir Makarov  <vmakarov@redhat.com>

        Reverting patch:
        2018-03-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/83712
        * lra-assigns.c (assign_by_spills): Return a flag of reload
        assignment failure.  Do not process the reload assignment
        failures.  Do not spill other reload pseudos if they has the same
        reg class.
        (lra_assign): Add a return arg.  Set up from the result of
        assign_by_spills call.
        (find_reload_regno_insns, lra_split_hard_reg_for): New functions.
        * lra-constraints.c (split_reg): Add a new arg.  Use it instead of
        usage_insns if it is not NULL.
        (spill_hard_reg_in_range): New function.
        (split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
        * lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
        function prototypes.
        (lra_assign): Change prototype.
        * lra.c (lra): Add code to deal with fails by splitting hard reg
        live ranges.

2018-03-10  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84807
        * config/i386/i386.opt: Replace Enforcment with Enforcement.

2018-03-10  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/84620
        * dwarf2out.h (dw_val_class): Add dw_val_class_symview.
        (dw_val_node): Add val_symbolic_view.
        * dwarf2out.c (dw_line_info_table): Add symviews_since_reset.
        (symview_upper_bound): New.
        (new_line_info_table): Initialize symviews_since_reset.
        (dwarf2out_source_line): Count symviews_since_reset and set
        symview_upper_bound.
        (dw_val_equal_p): Handle symview.
        (add_AT_symview): New.
        (print_dw_val): Handle symview.
        (attr_checksum, attr_checksum_ordered): Likewise.
        (same_dw_val_p, size_of_die): Likewise.
        (value_format, output_die): Likewise.
        (add_high_low_attributes): Use add_AT_symview for entry_view.
        (dwarf2out_finish): Reset symview_upper_bound, clear
        zero_view_p.

2018-03-09  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83969
        * config/rs6000/rs6000.c (rs6000_offsettable_memref_p): New prototype.
        Add strict argument and use it.
        (rs6000_split_multireg_move): Update for new strict argument.
        (mem_operand_gpr): Disallow all non-offsettable addresses.
        * config/rs6000/rs6000.md (*movdi_internal64): Use YZ constraint.

2018-03-09  Jakub Jelinek  <jakub@redhat.com>

        PR target/84772
        * config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Mark va_arg_tmp
        temporary TREE_ADDRESSABLE before gimplification of BUILT_IN_MEMCPY.
        * config/powerpcspe/powerpcspe.c (rs6000_gimplify_va_arg): Likewise.

        PR c++/84767
        * tree-inline.c (copy_tree_body_r): For INDIRECT_REF of a remapped
        decl, use remap_type if we want to use the type.

2018-03-09  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84526
        * gimple-ssa-warn-restrict.c (builtin_memref::set_base_and_offset):
        Remove dead code.
        (builtin_access::generic_overlap): Be prepared to handle non-array
        base objects.

2018-03-09  Alexandre Oliva  <aoliva@redhat.com>

        PR rtl-optimization/84682
        * lra-constraints.c (process_address_1): Check is_address flag
        for address constraints.
        (process_alt_operands): Likewise.
        * lra.c (lra_set_insn_recog_data): Pass asm operand locs to
        preprocess_constraints.
        * recog.h (preprocess_constraints): Add oploc parameter.
        Adjust callers.
        * recog.c (preprocess_constraints): Test address_operand for
        CT_ADDRESS constraints.

2018-03-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/83712
        * lra-assigns.c (assign_by_spills): Return a flag of reload
        assignment failure.  Do not process the reload assignment
        failures.  Do not spill other reload pseudos if they has the same
        reg class.
        (lra_assign): Add a return arg.  Set up from the result of
        assign_by_spills call.
        (find_reload_regno_insns, lra_split_hard_reg_for): New functions.
        * lra-constraints.c (split_reg): Add a new arg.  Use it instead of
        usage_insns if it is not NULL.
        (spill_hard_reg_in_range): New function.
        (split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
        * lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
        function prototypes.
        (lra_assign): Change prototype.
        * lra.c (lra): Add code to deal with fails by splitting hard reg
        live ranges.

2018-03-09  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/83193
        * common/config/arm/arm-common.c (arm_parse_arch_option_name):
        Accept complain bool parameter.  Only emit errors if it is true.
        (arm_parse_cpu_option_name): Likewise.
        (arm_target_thumb_only): Adjust callers of the above.
        * config/arm/arm-protos.h (arm_parse_cpu_option_name): Adjust
        prototype to take a default true bool parameter.
        (arm_parse_arch_option_name): Likewise.

2018-03-09  David Malcolm  <dmalcolm@redhat.com>
            Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        PR jit/64089
        PR jit/84288
        * Makefile.in (LD_VERSION_SCRIPT_OPTION, LD_SONAME_OPTION): New.
        * configure: Regenerate.
        * configure.ac ("linker --version-script option"): New.
        ("linker soname option"): New.

2018-03-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84775
        * tree-if-conv.c (add_bb_predicate_gimplified_stmts): Delink
        immediate uses of predicate stmts and mark them modified.

        Revert
        PR tree-optimization/84178
        * tree-if-conv.c (combine_blocks): Move insert_gimplified_predicates
        to caller.
        (version_loop_for_if_conversion): Delay update_ssa call.
        (tree_if_conversion): Delay update_ssa until after predicate
        insertion.

2018-03-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/84763
        * config/i386/winnt.c (i386_pe_seh_cold_init): Use small pre-allocation
        when the function accesses prior frames.

2018-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84456
        * dwarf2out.c (dw_loc_list): If list && loc_list->first->next, call
        gen_llsym, otherwise call maybe_gen_llsym.

        PR inline-asm/84742
        * recog.c (asm_operand_ok): Return 0 if multi-character constraint
        has ',' character inside of it.

2018-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/84748
        * config/aarch64/aarch64.md (*compare_cstore<mode>_insn): Mark pattern
        as clobbering CC_REGNUM.

2018-03-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/84552
        * tree-scalar-evolution.c: Include tree-into-ssa.h.
        (follow_copies_to_constant): Do not follow SSA names registered
        for update.

2018-03-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84178
        * tree-if-conv.c (combine_blocks): Move insert_gimplified_predicates
        to caller.
        (version_loop_for_if_conversion): Delay update_ssa call.
        (tree_if_conversion): Delay update_ssa until after predicate
        insertion.

2018-03-08  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/84178
        * tree-if-conv.c (release_bb_predicate): Remove the
        the assertion that the stmts have NULL use_ops.
        Discard the statements, asserting that they haven't
        yet been added to a BB.

2018-03-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84746
        * tree-ssa-pre.c (find_leader_in_sets): Deal with SET1 being NULL.
        (phi_translate): Pass in destination ANTIC_OUT set.
        (phi_translate_1): Likewise.  For a simplified result lookup
        a leader in ANTIC_OUT and AVAIL_OUT, not the ANTIC_IN sets.
        (phi_translate_set): Adjust.
        (do_pre_regular_insertion): Likewise.
        (do_pre_partial_partial_insertion): Likewise.

2018-03-08  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84735
        * doc/gcov.texi: Document usage of profile files.
        * gcov-io.h: Document changes in the format.

2018-03-08  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/84404
        PR debug/84408
        * dwarf2out.c (struct dw_line_info_table): Update comments for
        view == -1.
        (FORCE_RESET_NEXT_VIEW): New.
        (FORCE_RESETTING_VIEW_P): New.
        (RESETTING_VIEW_P): Check for -1 too.
        (ZERO_VIEW_P): Likewise.
        (new_line_info_table): Force-reset next view.
        (dwarf2out_begin_function): Likewise.
        (dwarf2out_source_line): Simplify zero_view_p initialization.
        Test FORCE_RESETTING_VIEW_P and RESETTING_VIEW_P instead of
        view directly.  Omit view when omitting .loc at line 0.

2018-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84740
        * tree-switch-conversion.c (process_switch): Call build_constructors
        only if info.phi_count is non-zero.

        PR tree-optimization/84739
        * tree-tailcall.c (find_tail_calls): Check call arguments against
        DECL_ARGUMENTS (current_function_decl) rather than
        DECL_ARGUMENTS (func) when checking for tail recursion.

2018-03-07  Jakub Jelinek  <jakub@redhat.com>

        * doc/contrib.texi: Add entries for Martin Liska, David Malcolm,
        Marek Polacek, extend Vladimir Makarov's, Jonathan Wakely's and
        Volker Reichelt's entry and add entries for people that perform
        GCC fuzzy testing and report numerous bugs.

2018-03-07  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/82411
        * config/rs6000/rs6000.c (rs6000_elf_in_small_data_p): Don't put
        readonly data in sdata, if that is disabled.
        * config/rs6000/sysv4.opt (mreadonly-in-sdata): New option.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document
        -mreadonly-in-sdata option.

2018-03-07  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84468
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Consider successor
        basic block when looking for nul assignment.

2018-03-07  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/84277
        * except.h (output_function_exception_table): Adjust prototype.
        * except.c (output_function_exception_table): Remove FNNAME parameter
        and add SECTION parameter.  Ouput one part of the table at a time.
        * final.c (final_scan_insn_1) <NOTE_INSN_SWITCH_TEXT_SECTIONS>: Output
        the first part of the exception table and emit unwind directives.
        * config/i386/i386-protos.h (i386_pe_end_cold_function): Declare.
        (i386_pe_seh_cold_init): Likewise.
        * config/i386/cygming.h (ASM_DECLARE_COLD_FUNCTION_NAME): New macro.
        (ASM_DECLARE_COLD_FUNCTION_SIZE): Likewise.
        * config/i386/i386.c (x86_expand_epilogue): Fix wording in comment.
        (ix86_output_call_insn): Emit a nop in one more case for SEH.
        * config/i386/winnt.c: Include except.h.
        (struct seh_frame_state): Add reg_offset, after_prologue and
        in_cold_section fields.
        (i386_pe_seh_end_prologue): Set seh->after_prologue.
        (i386_pe_seh_cold_init): New function.
        (i386_pe_seh_fini): Add COLD parameter and bail out if it is not equal
        to seh->in_cold_section.
        (seh_emit_push): Record the offset of the push.
        (seh_emit_save): Record the offet of the save.
        (i386_pe_seh_unwind_emit): Deal with NOTE_INSN_SWITCH_TEXT_SECTIONS.
        Test seh->after_prologue to disregard the epilogue.
        (i386_pe_end_function): Pass FALSE to i386_pe_seh_fini.
        (i386_pe_end_cold_function): New function.

2018-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/84565
        * config/aarch64/predicates.md (aarch64_simd_reg_or_zero): Use
        aarch64_simd_or_scalar_imm_zero rather than aarch64_simd_imm_zero.

        PR c++/84704
        * gimple-expr.c (create_tmp_var_raw): Set DECL_NAMELESS flag
        on tmp_var.
        * tree-pretty-print.c (dump_decl_name): For TDF_COMPARE_DEBUG,
        don't print names of DECL_NAMELESS DECL_IGNORED_P decls.

        PR middle-end/84723
        * multiple_target.c: Include tree-inline.h and intl.h.
        (expand_target_clones): Diagnose and fail if node->definition and
        !tree_versionable_function_p (node->decl).

2018-03-06  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.h (ASM_GENERATE_INTERNAL_LABEL): Revise to use
        sprint_ul.
        (ASM_OUTPUT_ADDR_VEC_ELT): Revise for above change.
        (ASM_OUTPUT_ADDR_DIFF_ELT): Likewise.
        * config/pa/pa64-hpux.h (ASM_GENERATE_INTERNAL_LABEL): Revise as above.

2018-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/84710
        * combine.c (try_combine): Use reg_or_subregno instead of handling
        just paradoxical SUBREGs and REGs.

2018-03-06  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_finalize_pic): Remove function.
        (arc_must_save_register): We use single base PIC register, remove
        checks to save/restore the PIC register.
        (arc_expand_prologue): Likewise.
        * config/arc/arc-protos.h (arc_set_default_type_attributes):
        Remove.
        (arc_verify_short): Likewise.
        (arc_attr_type): Likewise.
        * config/arc/arc.c (arc_set_default_type_attributes): Remove.
        (walk_stores): Likewise.
        (arc_address_cost): Make it static.
        (arc_verify_short): Likewise.
        (branch_dest): Likewise.
        (arc_attr_type): Likewise.
        * config/arc/arc.c (TARGET_ADJUST_INSN_LENGTH): Remove.
        (TARGET_INSN_LENGTH_PARAMETERS): Likewise.
        (arc_final_prescan_insn): Remove inserting the nops due to
        hardware hazards.  It is done in reorg step.
        (insn_length_variant_t): Remove.
        (insn_length_parameters_t): Likewise.
        (arc_insn_length_parameters): Likewise.
        (arc_get_insn_variants): Likewise.
        * config/arc/arc.h (TARGET_UPSIZE_DBR): Remove.

2018-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/84683
        * reg-stack.c (move_for_stack_reg): If any_malformed_asm, avoid
        assertion failure.

        PR tree-optimization/84687
        * omp-simd-clone.c (simd_clone_create): Clear DECL_BUILT_IN_CLASS
        on new_node->decl.
        * match.pd (pow(C,x)*expN(y) -> expN(logN(C)*x+y)): New optimization.

2018-03-05  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000-builtin.def (rs6000_speculation_barrier):
        Rename to ppc_speculation_barrier.
        * config/rs6000/rs6000.c (rs6000_init_builtins): Rename builtin to
        __builtin_ppc_speculation_barrier.

2018-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/84700
        * combine.c (combine_simplify_rtx): Don't try to simplify if
        if_then_else_cond returned non-NULL, but either true_rtx or false_rtx
        are equal to x.

2018-03-05  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_loop_align): Don't align tiny loops
        to 32 bytes when compiling for POWER9.

2018-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/84564
        * config/i386/i386.c (ix86_function_ok_for_sibcall): Check for
        regparm >= 3 with no arg reg available also for calls with
        flag_force_indirect_call.  Pass decl to ix86_function_regparm.

        PR target/84524
        * config/i386/sse.md (*<code><mode>3): Replace <mask_prefix3> with
        orig,vex.
        (*<plusminus_insn><mode>3): Likewise.  Remove <mask_operand3> uses.

2018-03-05  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84264
        * config/rs6000/vector.md (mov<mode>): Disallow altivec memory operands.

2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84486
        * tree-ssa-pre.c (create_expression_by_pieces): Remove dead code.
        When inserting a __builtin_assume_aligned call set the LHS
        SSA name alignment info accordingly.

2018-03-05  Wilco Dijkstra  <wdijkstr@arm.com>

        PR tree-optimization/84114
        * config/aarch64/aarch64.c (aarch64_reassociation_width)
        Avoid reassociation of FLOAT_MODE addition.

2018-03-05  Olga Makhotina  <olga.makhotina@intel.com>

        * common/config/i386/i386-common.c (OPTION_MASK_ISA_PCONFIG_SET,
        OPTION_MASK_ISA_PCONFIG_UNSET, OPTION_MASK_ISA_WBNOINVD_SET,
        OPTION_MASK_ISA_WBNOINVD_UNSET): New definitions.
        (ix86_handle_option): Handle -mpconfig and -mwbnoinvd.
        * config.gcc (pconfigintrin.h, wbnoinvdintrin.h) : Add headers.
        * config/i386/cpuid.h (bit_PCONFIG, bit_WBNOINVD): New.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect -mpconfig
        and -mwbnoinvd.
        * config/i386/i386-builtin.def (__builtin_ia32_wbnoinvd,
        __builtin_ia32_wbinvd): New builtins.
        (SPECIAL_ARGS2): New.
        * config/i386/i386-c.c (__WBNOINVD__, __PCONFIG__): New.
        (SPECIAL_ARGS2): New.
        * config/i386/i386.c (ix86_target_string): Add -mpconfig and -mwbnoinvd.
        (ix86_valid_target_attribute_inner_p): Ditto.
        (ix86_init_mmx_sse_builtins): Add special_args2.
        * config/i386/i386.h (TARGET_PCONFIG, TARGET_PCONFIG_P, TARGET_WBNOINVD,
        TARGET_WBNOINVD_P): New.
        * config/i386/i386.md (UNSPECV_WBINVD, UNSPECV_WBNOINVD): New.
        (define_insn "wbinvd", define_insn "wbnoinvd"): New.
        * config/i386/i386.opt: Add -mpconfig and -mwbnoinvd.
        * config/i386/immintrin.h (_wbinvd): New intrinsic.
        * config/i386/pconfigintrin.h: New file.
        * config/i386/wbnoinvdintrin.h: Ditto.
        * config/i386/x86intrin.h: Add headers pconfigintrin.h and
        wbnoinvdintrin.h.
        * doc/invoke.texi (-mpconfig, -mwbnoinvd): New.

2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84670
        * tree-ssa-pre.c (struct bb_bitmap_sets): Add visited_with_visited_succs
        member.
        (BB_VISITED_WITH_VISITED_SUCCS): New define.
        (compute_antic): Initialize BB_VISITED_WITH_VISITED_SUCCS.
        (compute_antic_aux): Only assert the number of values in ANTIC_IN
        doesn't grow if all successors (recursively) were visited at least
        once.

2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84650
        * tree-ssa-loop-im.c (pass_lim::execute): Reset the SCEV cache
        if executed in the loop pipeline.

2018-03-05  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/configfiles.texi (Configuration Files): Move info about
        conditionalizing $target-protos.h to...
        * doc/sourcebuild.texi (Back End): Here.  Explain how $target.h
        differs from $target-protos.h.

2018-03-05  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_expand_setmem): Declare.
        * config/nds32/nds32-multiple.md (setmemsi): Define.
        * config/nds32/nds32-memory-manipulation.c
        (nds32_gen_dup_4_byte_to_word_value): New.
        (emit_setmem_word_loop): New.
        (emit_setmem_byte_loop): New.
        (nds32_expand_setmem_loop): New.
        (nds32_expand_setmem_loop_v3m): New.
        (nds32_expand_setmem_unroll): New.
        (nds32_expand_setmem): New.

2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-memory-manipulation.c
        (nds32_emit_load_store): New.
        (nds32_emit_post_inc_load_store): New.
        (nds32_emit_mem_move): New.
        (nds32_emit_mem_move_block): New.
        (nds32_expand_movmemsi_loop_unknown_size): New.
        (nds32_expand_movmemsi_loop_known_size): New.
        (nds32_expand_movmemsi_loop): New.
        (nds32_expand_movmemsi_unroll): New.
        (nds32_expand_movmemqi): Rename ...
        (nds32_expand_movmemsi): ... to this.
        * config/nds32/nds32-multiple.md (movmemqi): Rename ...
        (movmemsi): ... to this.
        * config/nds32/nds32-protos.h (nds32_expand_movmemqi): Rename ...
        (nds32_expand_movmemsi): ... to this.

2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h
        (nds32_expand_load_multiple): New arguments.
        (nds32_expand_store_multiple): Ditto.
        (nds32_valid_multiple_load_store): Rename ...
        (nds32_valid_multiple_load_store_p): ... to this.
        * config/nds32/nds32-memory-manipulation.c
        (nds32_expand_load_multiple): Refine implementation.
        (nds32_expand_store_multiple): Ditto.
        * config/nds32/nds32-multiple.md
        (load_multiple): Update nds32_expand_load_multiple interface.
        (store_multiple): Update nds32_expand_store_multiple interface.
        * config/nds32/nds32-predicates.c
        (nds32_valid_multiple_load_store): Rename ...
        (nds32_valid_multiple_load_store_p): ... to this and refine
        implementation.
        * config/nds32/predicates.md
        (nds32_load_multiple_and_update_address_operation): New predicate.
        (nds32_store_multiple_and_update_address_operation): New predicate.

2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (type): Add load_multiple and store_multiple.
        (combo): New attribute.
        * config/nds32/nds32-multiple.md: Refine patterns with new attributes.

2018-03-03  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.opt: Change -mcmodel= default value.

2018-03-03  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_element): New enum.
        * config/nds32/constraints.md (Umw): New constraint.
        * config/nds32/nds32-intrinsic.c: Add more builtin functions.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32-md-auxiliary.c (nds32_regno_to_enable4): New.
        (nds32_valid_smw_lwm_base_p): New.
        (nds32_output_smw_single_word): New.
        (nds32_output_lmw_single_word): New.
        (nds32_expand_unaligned_load): New.
        (nds32_expand_unaligned_store): New.
        * config/nds32/nds32-protos.h (nds32_valid_smw_lwm_base_p): Declare.
        (nds32_output_smw_single_word): Declare.
        (nds32_output_lmw_single_word): Declare.
        (nds32_expand_unaligned_load): Declare.
        (nds32_expand_unaligned_store): Declare.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_UALOAD_HW,
        NDS32_BUILTIN_UALOAD_W, NDS32_BUILTIN_UALOAD_DW,
        NDS32_BUILTIN_UASTORE_HW, NDS32_BUILTIN_UASTORE_W,
        NDS32_BUILTIN_UASTORE_DW.
        * config/nds32/predicates.md (nds32_lmw_smw_base_operand): New
        predicate.

2018-03-03  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-intrinsic.c
        (nds32_expand_builtin_null_ftype_reg): Delete.
        (nds32_expand_builtin_reg_ftype_imm): Ditto.
        (nds32_expand_builtin_null_ftype_reg_imm): Ditto.
        (nds32_read_argument): New.
        (nds32_legitimize_target): Ditto.
        (nds32_legitimize_argument): Ditto.
        (nds32_check_constant_argument): Ditto.
        (nds32_expand_unop_builtin): Ditto.
        (nds32_expand_unopimm_builtin): Ditto.
        (nds32_expand_binop_builtin): Ditto.
        (nds32_builtin_decl_impl): Ditto.
        (builtin_description): Ditto.
        (nds32_expand_builtin_impl): Rewrite with new infrastructure.
        (nds32_init_builtins_impl): Ditto.
        * config/nds32/nds32.c (TARGET_BUILTIN_DECL): Define.
        (nds32_builtin_decl): New.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_COUNT.
        * config/nds32/nds32-protos.h (nds32_builtin_decl_impl): Declare.

2018-03-02  Jeff Law  <law@redhat.com>

        * reorg.c (stop_search_p): Handle DEBUG_INSN.
        (redundant_insn, fill_simple_delay_slots): Likewise.
        (fill_slots_from_thread): Likewise.
        * resource.c (mark_referenced_resources): Likewise.
        (mark_set_resources, find_dead_or_set_registers): Likewise.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        * substring-locations.h (format_warning_va): Formatting fix for
        ATTRIBUTE_GCC_DIAG.
        (format_warning_at_substring): Fix up ATTRIBUTE_GCC_DIAG second
        argument.
        (format_warning_n_va, format_warning_at_substring_n): New prototypes.
        * substring-locations.c: Include intl.h.
        (format_warning_va): Turned into small wrapper around
        format_warning_n_va, renamed to ...
        (format_warning_n_va): ... this, add N and PLURAL_GMSGID arguments,
        rename GMSGID to SINGULAR_GMSGID, if SINGULAR_GMSGID != PLURAL_GMSGID,
        use ngettext.
        (format_warning_at_substring_n): New function.
        * gimple-ssa-sprintf.c: Remove GCC diagnostic ignored pragma.
        (fmtwarn): Add ATTRIBUTE_GCC_DIAG.  Turn into a copy of
        format_warning_at_substring with just a shorter name instead of
        const function pointer.
        (fmtwarn_n): New function.
        (maybe_warn, format_directive, parse_directive): Use fmtwarn_n where
        appropriate, get rid of all the fmtstr temporaries, move conditionals
        with G_() wrapped string literals directly into fmtwarn arguments,
        cast dir.len to (int), formatting fixes.

2018-03-02  Thomas Schwinge  <thomas@codesourcery.com>

        * doc/invoke.texi: Remove "Cilk Plus" references.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>
            Richard Biener  <rguenther@suse.de>

        PR ipa/84628
        * expr.c (expand_expr_real_1) <case CALL_EXPR>: Don't emit diagnostics
        for error or warning attributes if CALL_FROM_THUNK_P is set.
        Formatting fixes.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/56540
        * config/pa/pa.h (TARGET_CPU_CPP_BUILTINS): Predefine
        __SIZEOF_128__ macro if HPUX_LONG_DOUBLE_LIBRARY.

        PR target/56540
        * config/ia64/ia64.h (TARGET_CPU_CPP_BUILTINS): Predefine
        __SIZEOF_{FPREG,FLOAT{80,128}}__ macros.

        * predict.c (test_prediction_value_range): Use PROB_UNINITIALIZED
        instead of -1U in last predictors element's probability member.

2018-03-02  Eric Botcazou  <ebotcazou@adacore.com>

        PR ipa/83983
        * ipa-devirt.c (odr_subtypes_equivalent_p): Get the ODR type of both
        arguments if they are comparable.

2018-03-02  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84634
        * tree-vect-stmts.c (vectorizable_store, vectorizable_load): Replace
        masks and masked_loop_p with a single loop_masks, making sure it's
        null for bb vectorization.

2018-03-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence)
        (vect_analyze_data_ref_access): Use loop->safe_len rather than
        loop->force_vectorize to check whether there is no alias.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/84614
        * rtl.h (prev_real_nondebug_insn, next_real_nondebug_insn): New
        prototypes.
        * emit-rtl.c (next_real_insn, prev_real_insn): Fix up function
        comments.
        (next_real_nondebug_insn, prev_real_nondebug_insn): New functions.
        * cfgcleanup.c (try_head_merge_bb): Use prev_real_nondebug_insn
        instead of a loop around prev_real_insn.
        * combine.c (move_deaths): Use prev_real_nondebug_insn instead of
        prev_real_insn.

        PR inline-asm/84625
        * config/i386/i386.c (ix86_print_operand): Use conditional
        output_operand_lossage instead of gcc_assert if CONST_VECTOR is not
        zero vector.

2018-03-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84427
        * tree-ssa-pre.c (bitmap_remove_expr_from_set): Remove.
        (bitmap_set_subtract_values): Rewrite to handle multiple
        exprs per value.
        (clean): Likewise.
        (prune_clobbered_mems): Likewise.
        (phi_translate): Take edge instead of pred/phiblock.
        (phi_translate_1): Likewise.
        (phi_translate_set): Likewise.  Insert all translated
        exprs for a value into the set, keeping possibly multiple
        expressions per value.
        (compute_antic_aux): Adjust for phi_translate changes.
        When intersecting union the expressions and prune those
        not in the final value set, keeping possibly multiple
        expressions per value.  Do not use value-insertion
        for unioning ANTIC_OUT U EXP_GEN - TMP_GEN but merge
        all expressions.  Add verification that the value-sets
        only shrink during iteration.
        (compute_partial_antic_aux): Adjust for the phi_translate changes.
        (do_pre_regular_insertion): Likewise.
        (do_pre_partial_partial_insertion): Likewise.

2018-03-02  Richard Biener  <rguenther@suse.de>

        PR target/82005
        * config/darwin.c (saved_debug_info_level): New static global.
        (darwin_asm_lto_start): Disable debug info generation for LTO out.
        (darwin_asm_lto_end): Restore debug info generation settings.

2018-03-01  Martin Liska  <mliska@suse.cz>

        PR sanitizer/82484
        * sanopt.c (sanitize_rewrite_addressable_params): Do not handle
        volatile arguments.

2018-03-01  Richard Biener  <rguenther@suse.de>

        PR debug/84645
        * dwarf2out.c (gen_variable_die): Properly handle late VLA
        type annotation with LTO when debug was disabled at compile-time.

2018-03-01  Matthew Fortune  <mfortune@gmail.com>

        * config/mips/mips.c (mips_final_prescan_insn): Fix incorrect
        XINT with INTVAL.
        (mips_final_postscan_insn): Likewise.

2018-03-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR rtl-optimization/84528
        * alias.c (init_alias_target): Add commentary.
        (init_alias_analysis): Only give HARD_FRAME_POINTER_REGNUM
        a unique base value if the frame pointer is not eliminated
        to the stack pointer.

2018-03-01  Tom de Vries  <tom@codesourcery.com>

        PR rtl-optimization/83327
        * lra-int.h (hard_regs_spilled_into): Declare.
        * lra.c (hard_regs_spilled_into): Define.
        (init_reg_info): Init hard_regs_spilled_into.
        * lra-spills.c (assign_spill_hard_regs): Update hard_regs_spilled_into.
        * lra-lives.c (make_hard_regno_born, make_hard_regno_dead)
        (process_bb_lives): Handle hard_regs_spilled_into.
        (lra_create_live_ranges_1): Before doing liveness propagation, clear
        regs in all_hard_regs_bitmap if set in hard_regs_spilled_into.

2018-02-28  David Edelsohn  <dje.gcc@gmail.com>

        * config.gcc (powerpc-ibm-aix7.1.*): New stanza.
        (powerpc-ibm-aix[789]*): Default to AIX 7.2.
        * config/rs6000/aix71.h (TARGET_DEFAULT): Revert to Power4 ISA.
        * config/rs6000/aix72.h: New file.

2018-02-28  Jakub Jelinek  <jakub@redhat.com>

        * gimple-ssa-warn-restrict.c (maybe_diag_overlap): Use warning_n
        instead of warning_at with conditional singular and plural messages
        where possible.

        PR target/52991
        * stor-layout.c (update_alignment_for_field): For
        targetm.ms_bitfield_layout_p (rli->t), if !is_bitfield
        && !DECL_PACKED (field), do the alignment update, just use
        only desired_align instead of MAX (type_align, desired_align)
        as the alignment.
        (place_field): Don't do known_align < desired_align handling
        early if targetm.ms_bitfield_layout_p (rli->t) and rli->prev_field
        is non-NULL, instead do it after rli->prev_field handling and
        only if not within a bitfield word.  For DECL_PACKED (field)
        use type_align of BITS_PER_UNIT.

2018-02-28  Eric Botcazou  <ebotcazou@adacore.com>

        * config/aarch64/aarch64.c (aarch64_emit_probe_stack_range): Remove
        superfluous parentheses and trailing spaces.

2018-02-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84584
        * graphite-scop-detection.c (scop_detection::add_scop): Discard
        SCoPs with fake exit edge.

2018-02-28  Martin Liska  <mliska@suse.cz>

        PR testsuite/84597
        * timevar.c (timer::print): Fix format to properly print 100%
        values.

2018-02-28  Richard Biener  <rguenther@suse.de>

        PR middle-end/84607
        * genmatch.c (capture_info::walk_match): Do not mark
        captured expressions without operands as expr_p given
        they act more like predicates and should be subject to
        "lost tail" side-effect preserving.

2018-02-28  Alexandre Oliva  <aoliva@redhat.com>

        PR rtl-optimization/81611
        * auto-inc-dec.c (attempt_change): Move dead note from
        mem_insn if it's the next use of regno
        (find_address): Take address use of reg holding
        non-incremented value.  Add parm to limit search to the named
        reg only.
        (merge_in_block): Attempt to use a mem insn that is the next
        use of the original regno.

2018-02-27  Martin Sebor  <msebor@redhat.com>

        PR c++/83871
        * doc/invoke.texi (-Wmissing-attributes): New option.
        * print-tree.c (print_node): Handle DECL_UNINLINABLE.

2018-02-27  Martin Sebor  <msebor@redhat.com>

        PR translation/84207
        * diagnostic-core.h (warning_n, error_n, inform_n): Change
        n argument to unsigned HOST_WIDE_INT.
        * diagnostic.c (warning_n, error_n, inform_n): Ditto.
        (diagnostic_n_impl): Ditto.  Handle arguments in excess of LONG_MAX.
        * gimple-ssa-sprintf.c (format_directive): Simplify inform_n call.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Use warning_n.

2018-02-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84512
        * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost):
        Do not use the estimate returned from record_stmt_cost for
        the scalar iteration cost but sum properly using add_stmt_cost.

2018-02-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84466
        * graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
        Adjust last change to less strictly validate use operands.

2018-02-27  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84548
        * gcov.c (process_file): Allow partial overlap and consider it
        also as group functions.
        (output_lines): Properly calculate range of lines for a group.

2018-02-27  Martin Liska  <mliska@suse.cz>

        * timevar.c (timer::print_row): Remove 'usr', 'sys', 'wall' and
        'ggc' suffixes.  Change first column width.
        (timer::print): Fix formatting of the column.

2018-02-27  Alexandre Oliva  <aoliva@redhat.com>

        * tree-ssa-live.c (remove_unused_scope_block_p): Do not
        preserve inline entry blocks for the sake of debug inline
        entry point markers alone.
        (remove_unused_locals): Suggest in comments a better place to
        force the preservation of inline entry blocks that are
        otherwise unused, but do not preserve them.

2018-02-26  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (ix86_output_indirect_jmp): Update comments.

2018-02-26  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84039
        * config/i386/constraints.md (Bs): Replace
        ix86_indirect_branch_register with
        TARGET_INDIRECT_BRANCH_REGISTER.
        (Bw): Likewise.
        * config/i386/i386.md (indirect_jump): Likewise.
        (tablejump): Likewise.
        (*sibcall_memory): Likewise.
        (*sibcall_value_memory): Likewise.
        Peepholes of indirect call and jump via memory: Likewise.
        (*sibcall_GOT_32): Disallowed for TARGET_INDIRECT_BRANCH_REGISTER.
        (*sibcall_value_GOT_32): Likewise.
        * config/i386/predicates.md (indirect_branch_operand): Likewise.
        (GOT_memory_operand): Likewise.
        (call_insn_operand): Likewise.
        (sibcall_insn_operand): Likewise.
        (GOT32_symbol_operand): Likewise.
        * config/i386/i386.h (TARGET_INDIRECT_BRANCH_REGISTER): New.

2018-02-26  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/83496
        * reorg.c (steal_delay_list_from_target): Change REDUNDANT array from
        booleans to RTXes.  Call fix_reg_dead_note on every non-null element.
        (steal_delay_list_from_fallthrough): Call fix_reg_dead_note on a
        redundant insn, if any.
        (relax_delay_slots): Likewise.
        (update_reg_unused_notes): Rename REDUNDANT_INSN to OTHER_INSN.

2018-02-26  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83965
        * tree-vect-patterns.c (vect_reassociating_reduction_p): Assume
        that grouped statements are part of a reduction chain.  Return
        true if the statement is not marked as a reduction itself but
        is part of a group.
        (vect_recog_dot_prod_pattern): Don't check whether the statement
        is part of a group here.
        (vect_recog_sad_pattern): Likewise.
        (vect_recog_widen_sum_pattern): Likewise.

2018-02-26  Eric Botcazou  <ebotcazou@adacore.com>

        PR debug/84545
        * final.c (rest_of_clean_state): Also look for calls inside sequences.

2018-02-26  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84530
        * config/i386/i386-protos.h (ix86_output_indirect_jmp): Remove
        the bool argument.
        (ix86_output_indirect_function_return): New prototype.
        (ix86_split_simple_return_pop_internal): Likewise.
        * config/i386/i386.c (indirect_return_via_cx): New.
        (indirect_return_via_cx_bnd): Likewise.
        (indirect_thunk_name): Handle return va CX_REG.
        (output_indirect_thunk_function): Create alias for
        __x86_return_thunk_[re]cx and __x86_return_thunk_[re]cx_bnd.
        (ix86_output_indirect_jmp): Remove the bool argument.
        (ix86_output_indirect_function_return): New function.
        (ix86_split_simple_return_pop_internal): Likewise.
        * config/i386/i386.md (*indirect_jump): Don't pass false
        to ix86_output_indirect_jmp.
        (*tablejump_1): Likewise.
        (simple_return_pop_internal): Change it to define_insn_and_split.
        Call ix86_split_simple_return_pop_internal to split it for
        -mfunction-return=.
        (simple_return_indirect_internal): Call
        ix86_output_indirect_function_return instead of
        ix86_output_indirect_jmp.

2018-02-26  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/84405
        * vec.h (vec_default_construct): For BROKEN_VALUE_INITIALIZATION use
        memset and value initialization afterwards.

2018-02-26  Christophe Lyon  <christophe.lyon@linaro.org>

        * Makefile.in (lto-wrapper): Use ALL_LINKERFLAGS.

2018-02-26  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR target/84521
        * common/config/aarch64/aarch64-common.c
        (aarch_option_optimization_table[]): Switch
        off fomit-frame-pointer

2018-02-26  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-multiple.md (load_multiple): Disallow
        volatile memory.
        (store_multiple): Ditto.

2018-02-26  Kito Cheng  <kito.cheng@gmail.com>

        * config.gcc: Add --with-cpu support for nds32 target.
        * config/nds32/nds32-opts.h (nds32_cpu_type): New.
        * config/nds32/nds32.opt: Add -mcpu= option.

2018-02-25  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.opt (mvrsave=no, mvrsave=yes, isel=no,
        isel=yes): Warn for these deprecated options.

2018-02-23  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix71.h (TARGET_DEFAULT): Change to
        ISA_2_5_MASKS_EMBEDDED.

2018-02-23  Jakub Jelinek  <jakub@redhat.com>

        * ipa-prop.c (ipa_vr_ggc_hash_traits::hash): Hash p->min and
        p->max as pointers rather than using iterative_hash_expr.

2018-02-23  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def: Change VSIGNED2 and VUNSIGNED2
        macro expansions from BU_VSX_2 to BU_P8V_VSX_2 and BU_VSX_OVERLOAD_2 to
        BU_P8V_OVERLOAD_2.
        * config/rs6000/rs6000-c.c: Change VSX_BUILTIN_VEC_VSIGNED2 to
        P8V_BUILTIN_VEC_VSIGNED2.  Change VSX_BUILTIN_VEC_VUNSIGNED2 to
        P8V_BUILTIN_VEC_VUNSIGNED2.

2018-02-22  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/81572
        * lra-int.h (LRA_UNKNOWN_ALT, LRA_NON_CLOBBERED_ALT): New macros.
        * lra.c (lra_set_insn_recog_data, lra_update_insn_recog_data): Use
        LRA_UNKNOWN_ALT.
        * lra-constraints.c (curr_insn_transform): Set up
        LRA_NON_CLOBBERED_ALT for moves processed on the fast path.  Use
        LRA_UNKNOWN_ALT.
        (remove_inheritance_pseudos): Use LRA_UNKNOWN_ALT.
        * lra-eliminations.c (spill_pseudos): Ditto.
        (process_insn_for_elimination): Ditto.
        * lra-lives.c (reg_early_clobber_p): Use the new macros.
        * lra-spills.c (spill_pseudos): Use LRA_UNKNOWN_ALT and
        LRA_NON_CLOBBERED_ALT.

2018-02-22  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84480
        * gimple-fold.c (gimple_fold_builtin_strcpy): Move warnings
        to maybe_diag_stxncpy_trunc.  Call it.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Integrate warnings
        from gimple_fold_builtin_strcpy.  Print inlining stack.
        (handle_builtin_stxncpy): Print inlining stack.
        * tree-ssa-strlen.h (maybe_diag_stxncpy_trunc): Declare.

2018-02-22  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84176
        * config/i386/i386.c (ix86_set_indirect_branch_type): Issue an
        error when -mindirect-branch=thunk-extern, -fcf-protection=branch
        and -fcheck-pointer-bounds are used together.
        (indirect_thunk_prefix): New enum.
        (indirect_thunk_need_prefix): New function.
        (indirect_thunk_name): Replace need_bnd_p with need_prefix.  Use
        "_nt" instead of "_bnd" for NOTRACK prefix.
        (output_indirect_thunk): Replace need_bnd_p with need_prefix.
        (output_indirect_thunk_function): Likewise.
        (): Likewise.
        (ix86_code_end): Update output_indirect_thunk_function calls.
        (ix86_output_indirect_branch_via_reg): Replace
        ix86_bnd_prefixed_insn_p with indirect_thunk_need_prefix.
        (ix86_output_indirect_branch_via_push): Likewise.
        (ix86_output_function_return): Likewise.
        * doc/invoke.texi: Document -mindirect-branch=thunk-extern is
        incompatible with -fcf-protection=branch and
        -fcheck-pointer-bounds.

2018-02-22  Steve Ellcey  <sellcey@cavium.com>

        PR target/83335
        * config/aarch64/aarch64.c (aarch64_print_address_internal):
        Change gcc_assert call to output_operand_lossage.

2018-02-22  Steve Ellcey  <sellcey@cavium.com>

        * doc/extend.texi (__builtin_extend_pointer): Document builtin.

2018-02-22  DJ Delorie  <dj@redhat.com>
            Sebastian Perta  <sebastian.perta@renesas.com>
            Oleg Endo  <olegendo@gcc.gnu.org>

        * config/rx/rx.c (rx_rtx_costs): New function.
        (TARGET_RTX_COSTS): Override to use rx_rtx_costs.

2018-02-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        * config/arm/t-multilib: Map Armv8-R to Armv7 multilibs.

2018-02-22  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * common/config/arm/arm-common.c (arm_print_hint_for_cpu_option):
        Add "native" as a possible value.

2018-02-22  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/i386/i386.c (ix86_option_override_internal):
        Add "native" as a possible value for -march and -mtune.

2018-02-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/84502
        * stor-layout.c (finalize_type_size): Propagate TYPE_EMPTY_P flag
        to all type variants.

        PR tree-optimization/84503
        * gimple-ssa-store-merging.c (merged_store_group::merge_into): Compute
        width as info->bitpos + info->bitsize - start.
        (merged_store_group::merge_overlapping): Simplify width computation.
        (check_no_overlap): New function.
        (imm_store_chain_info::try_coalesce_bswap): Compute expected
        start + width and last_order of the group, fail if check_no_overlap
        fails.
        (imm_store_chain_info::coalesce_immediate_stores): Don't merge info
        to group if check_no_overlap fails.

2018-02-21  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md: Delete contraint arguments to
        define_expand, define_split, and define_peephole2, and in
        define_insn_and_split if always unused.
        * config/rs6000/darwin.md: Ditto.
        * config/rs6000/dfp.md: Ditto.
        * config/rs6000/rs6000.md: Ditto.
        * config/rs6000/sync.md: Ditto.
        * config/rs6000/vector.md: Ditto.
        * config/rs6000/vsx.md: Ditto.

2018-02-21  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md: Write output control strings as braced
        blocks instead of double-quoted strings.
        * config/rs6000/darwin.md: Ditto.
        * config/rs6000/rs6000.md: Ditto.
        * config/rs6000/vector.md: Ditto.
        * config/rs6000/vsx.md: Ditto.

2018-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/84314 - ICE with templates and fastcall attribute.
        * attribs.c (build_type_attribute_qual_variant): Remove assert.

2018-02-21  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-cp.c (determine_versionability): Fix comment typos.

2018-02-21  Jan Hubicka  <hubicka@ucw.cz>

        PR c/84229
        * ipa-cp.c (determine_versionability): Do not version functions caling
        va_arg_pack.

2018-02-21  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/aarch64/aarch64.c (aarch64_print_hint_for_core_or_arch):
        Add "native" as a possible value.
        * config/aarch64/aarch64.h (HAVE_LOCAL_CPU_DETECT):  Define
        the macro when native cpu detection is available.

2018-02-21  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * common/config/arm/arm-common.c (arm_print_hint_for_arch_option):
        Add "native" as a possible value.
        * config/arm/arm.h (HAVE_LOCAL_CPU_DETECT): Define the macro
        when native cpu detection is available.

2018-02-21  Jakub Jelinek  <jakub@redhat.com>
            Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84478
        * gimple-fold.h (get_range_strlen): Add a bool argument defaulted to
        false.
        * gimple-fold.c (get_range_strlen): Make minlen const and assume it
        can't be NULL.  Change FUZZY from bool to int, for 1 add PHI/COND_EXPR
        support which is conservatively correct, for 2 only stay conservative
        for maxlen.  Formatting and comment capitalization fixes.  Add STRICT
        argument to the 2 argument get_range_strlen, adjust 6 arg
        get_range_strlen caller and clear minmaxlen[0] and [1] if it returned
        false.
        (get_maxval_strlen): Adjust 6 arg get_range_strlen caller.
        (gimple_fold_builtin_strlen): Pass true as last argument to
        get_range_strlen.

2018-02-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/84095
        * gimple-ssa-warn-restrict.c (builtin_memref::extend_offset_range): New.
        (builtin_memref::set_base_and_offset): Same.  Handle inner references.
        (builtin_memref::builtin_memref): Factor out parts into
        set_base_and_offset and call it.

2018-02-20  Richard Sandiford  <richard.sandiford@linaro.org>

        PR middle-end/84406
        * optabs-query.c (find_widening_optab_handler_and_mode): If from_mode
        is a scalar_int_mode, assert that to_mode is a scalar_int_mode with
        greater precision.  If to_mode is a MODE_PARTIAL_INT, stop the
        search at the associated MODE_INT.

2018-02-20  Jeff Law  <law@redhat.com>

        PR middle-end/82123
        PR tree-optimization/81592
        PR middle-end/79257
        * gimple-ssa-sprintf.c (format_integer): Query EVRP range analyzer
        for range data rather than using global data.
        * gimple-ssa-sprintf.c (get_int_range): Query EVRP range analyzer for
        range data rather than using global data.
        * gimple-ssa-sprintf.c (get_int_range): Accept vr_values parameter
        pass it to children as needed.
        (struct directive::fmtresult): Similarly.
        (struct directive::set_width): Similarly.
        (struct directive::set_precision): Similarly.
        (format_integer, format_directive, parse_directive): Similarly.
        (format_none): Accept unnamed vr_values parameter.
        (format_percent, format_floating, format_character): Similarly.
        (format_string, format_plain): Similarly.
        * gimple-ssa-sprintf.c (sprintf_dom_walker::handle_gimple_call): Query
        the EVRP range analyzer for range data rather than using global data.
        * gimple-ssa-sprintf.c: Include alloc-pool.h, vr-values.h and
        gimple-ssa-evrp-analyze.h
        (class sprintf_dom_walker): Add after_dom_children member function.
        Add evrp_range_analyzer member.
        (sprintf_dom_walker::before_dom_children): Call into the EVRP
        range analyzer as needed.
        (sprintf_dom_walker::after_dom_children): New member function.
        * gimple-ssa-evrp-analyze.c (evrp_range_analyzer::enter): Do nothing
        if not optimizing.
        (evrp_range_analyzer::record_ranges_from_stmt): Likewise.
        (evrp_range_analyzer::pop_to_marker): Likewise.

2018-02-20  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84419
        * internal-fn.c (expand_call_mem_ref): Create a TARGET_MEM_REF
        with the required type if its current type is compatible but
        different.

2018-02-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/82004
        * match.pd (pow(C,x) -> exp(log(C)*x)): Delay all folding until
        after vectorization.

2018-02-20  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/aarch64/aarch64.c (aarch64_print_hint_for_core_or_arch): Print
        possible values if we don't have a hint.

2018-02-20  Martin Liska  <mliska@suse.cz>

        PR c/84310
        PR target/79747
        * final.c (shorten_branches): Build align_tab array with one
        more element.
        * opts.c (finish_options): Add alignment option limit check.
        (MAX_CODE_ALIGN): Likewise.
        (MAX_CODE_ALIGN_VALUE): Likewise.
        * doc/invoke.texi: Document maximum allowed option value for
        all -falign-* options.

2018-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR target/84146
        * reg-notes.def (REG_CALL_ARG_LOCATION): New reg note.
        * insn-notes.def (NOTE_INSN_CALL_ARG_LOCATION): Remove.
        * var-tracking.c (emit_note_insn_var_location): Remove all references
        to NOTE_INSN_CALL_ARG_LOCATION.
        (emit_notes_in_bb): Emit arguments as REG_CALL_ARG_LOCATION note on
        the CALL_INSN rather than separate NOTE_INSN_CALL_ARG_LOCATION note.
        Use copy_rtx_if_shared.
        * dwarf2out.c (gen_subprogram_die): Use XEXP with 0 instead of
        NOTE_VAR_LOCATION on ca_loc->call_arg_loc_note.
        (dwarf2out_var_location): Remove handling of
        NOTE_INSN_CALL_ARG_LOCATION, instead handle REG_CALL_ARG_LOCATION note
        on call_insn.
        * final.c (final_scan_insn): Remove all references to
        NOTE_INSN_CALL_ARG_LOCATION.
        (rest_of_clean_state): Likewise.  Remove REG_CALL_ARG_LOCATION notes
        before dumping final insns.
        * except.c (emit_note_eh_region_end): Remove all references to
        NOTE_INSN_CALL_ARG_LOCATION.
        * config/alpha/alpha.c (alpha_pad_function_end): Likewise.
        * config/c6x/c6x.c (c6x_gen_bundles): Likewise.
        * config/arc/arc.c (hwloop_optimize): Likewise.
        * config/arm/arm.c (create_fix_barrier): Likewise.
        * config/s390/s390.c (s390_chunkify_start): Likewise.
        * config/sh/sh.c (find_barrier): Likewise.
        * config/i386/i386.c (rest_of_insert_endbranch,
        ix86_seh_fixup_eh_fallthru): Likewise.
        * config/xtensa/xtensa.c (hwloop_optimize): Likewise.
        * config/iq2000/iq2000.c (final_prescan_insn): Likewise.
        * config/frv/frv.c (frv_function_prologue): Likewise.
        * emit-rtl.c (try_split): Likewise.  Copy over REG_CALL_ARG_LOCATION
        reg note.
        (note_outside_basic_block_p): Remove all references to
        NOTE_INSN_CALL_ARG_LOCATION.
        * gengtype.c (adjust_field_rtx_def): Likewise.
        * print-rtl.c (rtx_writer::print_rtx_operand_code_0, print_insn):
        Likewise.
        * jump.c (cleanup_barriers, delete_related_insns): Likewise.
        * cfgrtl.c (force_nonfallthru_and_redirect): Likewise.

        PR c++/84444
        * builtins.c (builtin_mathfn_code): Don't check if CALL_EXPR_FN (t)
        is ADDR_EXPR.

        PR tree-optimization/84452
        * tree-vect-patterns.c (vect_recog_pow_pattern): Don't call
        expand_simd_clones if targetm.simd_clone.compute_vecsize_and_simdlen
        is NULL.

2018-02-19  Martin Liska  <mliska@suse.cz>

        PR sanitizer/82183
        * passes.def: Put pass_sancov_O0 before pass_lower_switch with -O0.

2018-02-19  Martin Liska  <mliska@suse.cz>
            Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/82491
        * gimple-fold.c (get_base_constructor): Make earlier bail out
        to prevent ubsan.

2018-02-19  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def: Change NEG macro expansions from
        BU_ALTIVEC_A to BU_P8V_AV_1 and BU_ALTIVEC_OVERLOAD_1 to
        BU_P8V_OVERLOAD_1.
        * config/rs6000/rs6000-c.c: Change ALTIVEC_BUILTIN_VEC_NEG to
        P8V_BUILTIN_VEC_NEG.

2018-02-19  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (movdf): New define expand.

2018-02-19  Martin Liska  <mliska@suse.cz>

        PR other/80589
        * doc/invoke.texi: Fix typo.
        * params.def (PARAM_MAX_LOOP_HEADER_INSNS): Likewise.

2018-02-18  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_option_override_internal): Don't
        handle rs6000_single_float and rs6000_double_float specially for
        e500 family CPUs.

2018-02-16  Jeff Law  <law@redhat.com>

        * config/rx/rx.c (add_pop_cfi_notes): New function.;
        (pop_regs): Use it.

2018-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/84425
        * ipa-inline.c (inline_small_functions): Fix a typo.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Backwards Compatibility): Americanize 'behaviour'.

2018-02-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def: Add BU_P8V_VSX_2 macro definition.
        Change FLOAT2 expansions from BU_VSX_2 to BU_P8V_VSX_2 and
        from BU_VSX_OVERLOAD_2 to BU_P8V_OVERLOAD_2.
        * config/rs6000/rs6000-c.c: Changed macro VSX_BUILTIN_VEC_FLOAT2
        expansion to P8V_BUILTIN_VEC_FLOAT2.

2018-02-16  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/70023
        * lra-constraints.c (inherit_in_ebb): Take hard reg mode of
        src_regno into account.

2018-02-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h: Remove vec_vextract4b and vec_vinsert4b.
        * config/rs6000/rs6000-builtin.def: Remove macro expansion for
        VEXTRACT4B, VINSERT4B, VINSERT4B_DI and VEXTRACT4B.
        * config/rs6000/rs6000.c: Remove case statements for
        P9V_BUILTIN_VEXTRACT4B, P9V_BUILTIN_VEC_VEXTRACT4B,
        P9V_BUILTIN_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
        and P9V_BUILTIN_VEC_VINSERT4B.
        * config/rs6000/rs6000-c.c (altivec_expand_builtin): Remove entries for
        P9V_BUILTIN_VEC_VEXTRACT4B and P9V_BUILTIN_VEC_VINSERT4B.
        * config/rs6000/vsx.md:
        * doc/extend.texi: Remove vec_vextract4b, non ABI definitions for
        vec_insert4b.

2018-02-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h: Add builtin names vec_extract4b
        vec_insert4b.
        * config/rs6000/rs6000-builtin.def: Add INSERT4B and EXTRACT4B
        definitions.
        * config/rs6000/rs6000-c.c: Add the definitions for
        P9V_BUILTIN_VEC_EXTRACT4B and P9V_BUILTIN_VEC_INSERT4B.
        * config/rs6000/rs6000.c (altivec_expand_builtin): Add
        P9V_BUILTIN_EXTRACT4B and P9V_BUILTIN_INSERT4B case statements.
        * config/rs6000/vsx.md: Add define_insn extract4b.  Add define_expand
        definition for insert4b and define insn *insert3b_internal.
        * doc/extend.texi: Add documentation for vec_extract4b.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Backwards Compatibility): Mention friend
        injection.  Note for-scope is deprecated.
        * doc/invoke.texi (-ffriend-injection): Deprecate.

2018-02-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * combine.c (try_combine): When adjusting LOG_LINKS for the destination
        that moved to I2, also allow destinations that are a paradoxical
        subreg (instead of a normal reg).

2018-02-16  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/83831
        * config/rx/rx.c (rx_fuse_in_memory_bitop): Convert shift operand
        to QImode.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        PR tree-optimization/84016
        PR target/82862
        * config/i386/i386.c (ix86_builtin_vectorization_cost):
        Adjust vec_construct for the fact we need additional higher latency
        128bit inserts for AVX256 and AVX512 vector builds.
        (ix86_add_stmt_cost): Scale vector construction cost for
        elementwise loads.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84417
        * tree-ssa.c (non_rewritable_mem_ref_base): Properly constrain
        the MEM_REF offset when conversion to BIT_FIELD_REF is desired.
        (non_rewritable_lvalue_p): Likewise, use poly-ints.

2018-02-16  Martin Liska  <mliska@suse.cz>

        PR sanitizer/84307
        * internal-fn.def (ASAN_CHECK): Set proper flags.
        (ASAN_MARK): Likewise.

2018-02-16  Julia Koval  <julia.koval@intel.com>

        * config/i386/i386.c (ix86_option_override_internal): Remove PTA_CLWB
        from PTA_CANNONLAKE.

2018-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/84272
        * config/aarch64/cortex-a57-fma-steering.c (fma_forest::merge_forest):
        Use ++iter rather than iter++ for std::list iterators.
        (func_fma_steering::dfs): Likewise.  Don't delete nodes right away,
        defer deleting them until all nodes in the forest are processed.  Do
        free even leaf nodes.  Change to_process into auto_vec.

        PR bootstrap/84405
        * system.h (BROKEN_VALUE_INITIALIZATION): Define for GCC < 4.3.
        * vec.h (vec_default_construct): Use memset instead of placement new
        if BROKEN_VALUE_INITIALIZATION is defined.
        * hash-table.h (hash_table<Descriptor, Allocator>::empty_slow): Use
        memset instead of value initialization if BROKEN_VALUE_INITIALIZATION
        is defined.

        PR rtl-optimization/83723
        * lra-int.h (lra_substitute_pseudo): Add DEBUG_P argument.
        * lra.c (lra_substitute_pseudo): Likewise.  If true, use
        gen_rtx_raw_SUBREG instead of gen_rtx_SUBREG.  Pass DEBUG_P to
        recursive calls.
        (lra_substitute_pseudo_within_insn): Adjust lra_substitute_pseudo
        callers.
        * lra-constraints.c (inherit_reload_reg, split_reg): Likewise.

2018-02-16  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/81443
        * rtlanal.c (num_sign_bit_copies1) <SUBREG>: Do not propagate results
        from inner REGs to paradoxical SUBREGs.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84399
        * graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
        For operands we can analyze at their definition make sure we can
        analyze them at each use as well.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84190
        * tree-ssa.c (non_rewritable_mem_ref_base): Do not touch
        volatile accesses if the decl isn't volatile.

2018-02-15  Jason Merrill  <jason@redhat.com>

        PR c++/84314 - ICE with templates and fastcall attribute.
        * attribs.c (build_type_attribute_qual_variant): Don't clobber
        TYPE_CANONICAL on an existing type.

2018-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84383
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Don't look at
        dstoff nor call operand_equal_p if dstbase is NULL.

        PR tree-optimization/84334
        * match.pd ((A +- CST1) +- CST2 -> A + CST3): If A is
        also a CONSTANT_CLASS_P, punt.

2018-02-14  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (riscv_first_stack_step): Move locals after
        first SMALL_OPERAND check.  New local min_second_step.  Move assert
        to where locals are set.  Add TARGET_RVC support.
        * config/riscv/riscv.h (C_SxSP_BITS, SWSP_REACH, SDSP_REACH): New.

2018-02-14  Indu Bhagat  <indu.bhagat@oracle.com>

        * doc/invoke.texi: Correct -Wformat-overflow code sample.

2018-02-14  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83698
        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): For
        arrays constrain the offset range to their bounds.
        (builtin_access::strcat_overlap): Adjust the bounds of overlap offset.
        (builtin_access::overlap): Avoid setting the size of overlap if it's
        already been set.
        (maybe_diag_overlap): Also consider arrays when deciding what values
        of offsets to include in diagnostics.

2018-02-14  Martin Sebor  <msebor@redhat.com>

        PR c/84108
        * attribs.c (diag_attr_exclusions): Consider the exclusion(s)
        that correspond to the kind of a declaration.

2018-02-14  John David Anglin  <danglin@gcc.gnu.org>

        PR target/83984
        * config/pa/pa.md: Load address of PIC label using the linkage table
        if the label is nonlocal.

2018-02-14  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000.c (rs6000_option_override_internal): Issue
        warning message if user requests -maltivec=be.
        * doc/invoke.texi: Document deprecation of -maltivec=be.

2018-02-14  Will Schmidt  <will_schmidt@vnet.ibm.com>

        PR target/84220
        * config/rs6000/rs6000-c.c: Update definitions for
        ALTIVEC_BUILTIN_VEC_SLD, ALTIVEC_BUILTIN_VEC_SLDW,
        VEC_XXSLDWI and ALTIVEC_BUILTIN_VEC_XXPERMDI builtins.

2018-02-14  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84239
        * config/i386/cetintrin.h: Remove _rdssp[d|q] and
        add _get_ssp intrinsics. Remove argument from
        __builtin_ia32_rdssp[d|q].
        * config/i386/i386-builtin-types.def: Add UINT_FTYPE_VOID.
        * config/i386/i386-builtin.def: Remove argument from
        __builtin_ia32_rdssp[d|q].
        * config/i386/i386.c: Use UINT_FTYPE_VOID. Use
        ix86_expand_special_args_builtin for _rdssp[d|q].
        * config/i386/i386.md: Remove argument from rdssp[si|di] insn.
        Clear register before usage.
        * doc/extend.texi: Remove argument from __builtin_ia32_rdssp[d|q].
        Add documentation for new _get_ssp and _inc_ssp intrinsics.

2018-02-14  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84357
        * tree-data-ref.c (object_address_invariant_in_loop_p): Check
        operand 1 of an ARRAY_REF too.

2018-02-14  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/83831
        * config/rx/rx-protos.h (rx_reg_dead_or_unused_after_insn,
        rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
        declarations.
        (set_of_reg): New struct.
        (rx_find_set_of_reg, rx_find_use_of_reg): New functions.
        * config/rx/rx.c (rx_reg_dead_or_unused_after_insn,
        rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
        functions.
        * config/rx/rx.md (andsi3, iorsi3, xorsi3): Convert to insn_and_split.
        Split into bitclr, bitset, bitinvert patterns if appropriate.
        (*bitset, *bitinvert, *bitclr): Convert to named insn_and_split and
        use rx_fuse_in_memory_bitop.
        (*bitset_in_memory, *bitinvert_in_memory, *bitclr_in_memory): Convert
        to named insn, correct maximum insn length.

2018-02-14  Jozef Lawrynowicz  <jozefl.gcc@gmail.com>

        PR target/79242
        * machmode.def: Define a complex mode for PARTIAL_INT.
        * genmodes.c (complex_class): Return MODE_COMPLEX_INT for
        MODE_PARTIAL_INT.
        * doc/rtl.texi: Document CSPImode.
        * config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
        handling.
        (msp430_hard_regno_nregs_with_padding): Likewise.

2018-02-13  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84279
        * config/rs6000/rs6000.c (mem_operand_gpr): Disallow altivec addresses.

2018-02-13  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/84169
        * combine.c (try_combine): New variable split_i2i3.  Set it to true if
        we generated a parallel as new i3 and we split that to new i2 and i3
        instructions.  Handle split_i2i3 similar to swap_i2i3: scan the
        LOG_LINKs of i3 to see which of those need to link to i2 now.  Link
        those to i2, not i1.  Partially rewrite this scan code.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR c/82210
        * stor-layout.c (place_field): For variable length fields, adjust
        offset_align afterwards not just based on the field's alignment,
        but also on the size.

        PR middle-end/84309
        * match.pd (pow(C,x) -> exp(log(C)*x)): Use exp2s and log2s instead
        of exps and logs in the use_exp2 case.

2018-02-13  Jeff Law  <law@redhat.com>

        * config/rl/rl78.c (rl78_attribute_table): Fix terminator and
        entry for "vector".

        * config/rl78/rl78.c (rl78_handle_func_attribute): Mark
        ARGS as unused.

2018-02-13  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/84342
        PR debug/84319
        * common.opt (gas-loc-support, gas-locview-support): New.
        (ginline-points, ginternal-reset-location-views): New.
        * doc/invoke.texi: Document them.  Use @itemx where intended.
        (gvariable-location-views): Adjust.
        * target.def (reset_location_view): New.
        * doc/tm.texi.in (DWARF2_ASM_VIEW_DEBUG_INFO): New.
        (TARGET_RESET_LOCATION_VIEW): New.
        * doc/tm.texi: Rebuilt.
        * dwarf2out.c (dwarf2out_default_as_loc_support): New.
        (dwarf2out_default_as_locview_support): New.
        (output_asm_line_debug_info): Use option variables.
        (dwarf2out_maybe_output_loclist_view_pair): Likewise.
        (output_loc_list): Likewise.
        (add_high_low_attributes): Check option variables.
        Don't output entry view attribute in strict mode.
        (gen_inlined_subroutine_die): Check option variables.
        (dwarf2out_inline_entry): Likewise.
        (init_sections_and_labels): Likewise.
        (dwarf2out_early_finish): Likewise.
        (maybe_reset_location_view): New, from...
        (dwarf2out_var_location): ... here.  Call it.
        * debug.h (dwarf2out_default_as_loc_support): Declare.
        (dwarf2out_default_as_locview_support): Declare.
        * hooks.c (hook_int_rtx_insn_0): New.
        * hooks.h (hook_int_rtx_insn_0): Declare.
        * toplev.c (process_options): Take -gas-loc-support and
        -gas-locview-support from dwarf2out.  Enable
        -gvariable-location-views by default only with locview
        assembler support.  Enable -ginternal-reset-location-views by
        default only if the target defines the corresponding hook.
        Enable -ginline-points by default if location views are
        enabled; force it disabled if statement frontiers are
        disabled.
        * tree-inline.c (expand_call_inline): Check option variables.
        * tree-ssa-live.c (remove_unused_scope_block_p): Likewise.

2018-02-13  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84321
        * tree-vrp.c (intersect_range_with_nonzero_bits): Fix VR_ANTI_RANGE
        handling.  Also check whether the anti-range contains any values
        that satisfy the mask; switch to a VR_RANGE if not.

2018-02-13  Paolo Bonzini  <bonzini@gnu.org>

        PR sanitizer/84340
        * internal-fn.def (ASAN_CHECK, ASAN_MARK): Revert changes to fnspec.

2018-02-13  Martin Jambor  <mjambor@suse.cz>

        PR c++/83990
        * ipa-param-manipulation.c (ipa_modify_call_arguments): Use location
        of call statements, also set location of a load to a temporary.

2018-02-13  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.c (add_vector_labels): New function.
        * config/rl78/rl78.c (rl78_handle_vector_attribute): New function.
        * config/rl78/rl78.c (rl78_start_function): Call add_vector_labels.
        * config/rl78/rl78.c (rl78_handle_func_attribute): Removed the assert
        which checks that no arguments are passed.
        * config/rl78/rl78.c (rl78_attribute_table): Add "vector" attribute.
        * doc/extend.texi: Documentation for the new attribute.

2018-02-13  Andreas Schwab  <schwab@suse.de>

        * config/riscv/linux.h (CPP_SPEC): Define.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/84335
        * config/i386/i386.c (ix86_init_mmx_sse_builtins): Pass
        OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2 instead of
        OPTION_MASK_ISA_AES as first argument to def_builtin_const
        for AES builtins.  Pass OPTION_MASK_ISA_PCLMUL | OPTION_MASK_ISA_SSE2
        instead of OPTION_MASK_ISA_PCLMUL as first argument to
        def_builtin_const for __builtin_ia32_pclmulqdq128 builtin.
        * config/i386/wmmintrin.h: If __SSE2__ is not defined, enable it
        temporarily for AES and PCLMUL builtins.

        PR tree-optimization/84339
        * gimple-fold.c (get_range_strlen): Set *FLEXP to true when handling
        ARRAY_REF where first operand is array_at_struct_end_p COMPONENT_REF.
        Formatting fixes.

        PR middle-end/84309
        * match.pd (pow(C,x) -> exp(log(C)*x)): Optimize instead into
        exp2(log2(C)*x) if C is a power of 2 and c99 runtime is available.
        * generic-match-head.c (canonicalize_math_after_vectorization_p): New
        inline function.
        * gimple-match-head.c (canonicalize_math_after_vectorization_p): New
        inline function.
        * omp-simd-clone.h: New file.
        * omp-simd-clone.c: Include omp-simd-clone.h.
        (expand_simd_clones): No longer static.
        * tree-vect-patterns.c: Include fold-const-call.h, attribs.h,
        cgraph.h and omp-simd-clone.h.
        (vect_recog_pow_pattern): Optimize pow(C,x) to exp(log(C)*x).
        (vect_recog_widen_shift_pattern): Formatting fix.
        (vect_pattern_recog_1): Don't check optab for calls.

        PR target/84336
        * config/i386/sse.md (<avx512>_vpermi2var<mode>3_mask): Force
        operands[2] into a REG before using gen_lowpart on it.

2018-02-12  Jeff Law  <law@redhat.com>

        PR target/83760
        * config/sh/sh.c (find_barrier): Consider a sibling call
        a barrier as well.

        * cse.c (try_back_substitute_reg): Move any REG_ARGS_SIZE note when
        successfully back substituting a reg.

2018-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vect-slp.c (vect_analyze_slp_cost): Add visited
        parameter, move visited init to caller.
        (vect_slp_analyze_operations): Separate cost from validity
        check, initialize visited once for all instances.
        (vect_schedule_slp): Analyze map to CSE vectorized nodes once
        for all instances.
        * tree-vect-stmts.c (vect_model_simple_cost): Make early
        out an assert.
        (vect_model_promotion_demotion_cost): Likewise.
        (vectorizable_bswap): Guard cost modeling with !slp_node
        instead of !PURE_SLP_STMT to avoid double-counting on hybrid
        SLP stmts.
        (vectorizable_call): Likewise.
        (vectorizable_conversion): Likewise.
        (vectorizable_assignment): Likewise.
        (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        (vectorizable_condition): Likewise.
        (vectorizable_comparison): Likewise.

2018-02-12  Paolo Bonzini  <bonzini@gnu.org>

        PR sanitizer/84307
        * internal-fn.def (ASAN_CHECK): Fix fnspec to account for return value.
        (ASAN_MARK): Fix fnspec to account for return value, change pointer
        argument from 'R' to 'W' so that the pointed-to datum is clobbered.

2018-02-08  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83665
        * params.def (inline-min-speedup): Increase from 8 to 15.
        (max-inline-insns-auto): Decrease from 40 to 30.
        * ipa-split.c (consider_split): Add some buffer for function to
        be considered inlining candidate.
        * invoke.texi (max-inline-insns-auto, inline-min-speedup): UPdate
        default values.

2018-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vect-slp.c (vect_build_slp_tree_2): Try swapping the
        matched stmts if we cannot swap the non-matched ones.

2018-02-12  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/avx512fintrin.h (_mm_mask_scalef_round_sd,
        _mm_maskz_scalef_round_sd, _mm_mask_scalef_round_ss,
        _mm_maskz_scalef_round_ss): New intrinsics.
        (__builtin_ia32_scalefsd_round, __builtin_ia32_scalefss_round): Fix.
        * config/i386/i386-builtin.def (__builtin_ia32_scalefsd_round,
        __builtin_ia32_scalefss_round): Remove.
        (__builtin_ia32_scalefsd_mask_round,
        __builtin_ia32_scalefss_mask_round): New intrinsics.
        * config/i386/sse.md (vmscalef<mode><round_name>): Renamed to ...
        (vmscalef<mode><mask_scalar_name><round_scalar_name>): ... this.
        ((match_operand:VF_128 2 "<round_nimm_predicate>"
        "<round_constraint>")): Changed to ...
        ((match_operand:VF_128 2 "<round_scalar_nimm_predicate>"
        "<round_scalar_constraint>")): ... this.
        ("vscalef<ssescalarmodesuffix>\t{<round_op3>%2, %1, %0|
        %0, %1, %2<round_op3>}"): Changed to ...
        ("vscalef<ssescalarmodesuffix>\t{<round_scalar_mask_op3>%2, %1,
        %0<mask_scalar_operand3>|%0<mask_scalar_operand3>, %1,
        %2<round_scalar_mask_op3>}"): ... this.
        * config/i386/subst.md (round_scalar_nimm_predicate): New.

2018-02-12  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/avx512fintrin.h (_mm_mask_sqrt_round_sd)
        (_mm_maskz_sqrt_round_sd, _mm_mask_sqrt_round_ss)
        (_mm_maskz_sqrt_round_ss): New intrinsics.
        (__builtin_ia32_sqrtsd_round, __builtin_ia32_sqrtss_round): Remove.
        (__builtin_ia32_sqrtsd_mask_round)
        (__builtin_ia32_sqrtss_mask_round): New builtins.
        * config/i386/i386-builtin.def (__builtin_ia32_sqrtsd_round)
        (__builtin_ia32_sqrtss_round): Remove.
        (__builtin_ia32_sqrtsd_mask_round)
        (__builtin_ia32_sqrtss_mask_round): New builtins.
        * config/i386/sse.md (vmsqrt<mode>2<round_name>): Renamed to ...
        (vmsqrt<mode>2<mask_scalar_name><round_scalar_name>): ... this.
        ((match_operand:VF_128 1 "vector_operand"
        "xBm,<round_constraint>")): Changed to ...
        ((match_operand:VF_128 1 "vector_operand"
        "xBm,<round_scalar_constraint>")): ... this.
        (vsqrt<ssescalarmodesuffix>\t{<round_op3>%1, %2, %0|
        %0, %2, %<iptr>1<round_op3>}): Changed to ...
        (vsqrt<ssescalarmodesuffix>\t{<round_scalar_mask_op3>%1, %2,
        %0<mask_scalar_operand3>|%0<mask_scalar_operand3>, %2,
        %<iptr>1<round_scalar_mask_op3>}): ... this.
        ((set_attr "prefix" "<round_prefix>")): Changed to ...
        ((set_attr "prefix" "<round_scalar_prefix>")): ... this.

2018-02-11  Steven Munroe  <munroesj@gcc.gnu.org>

        PR target/84266
        * config/rs6000/mmintrin.h (_mm_cmpeq_pi32 [_ARCH_PWR9]):
        Cast vec_cmpeq result to correct type.
        * config/rs6000/mmintrin.h (_mm_cmpgt_pi32 [_ARCH_PWR9]):
        Cast vec_cmpgt result to correct type.

2018-02-11  Alexandre Oliva  <aoliva@redhat.com>

        * final.c (final_scan_insn_1): Renamed from...
        (final_scan_insn): ... this.  New wrapper, to recover
        seen from the outermost call in recursive ones.
        * config/sparc/sparc.c (output_return): Drop seen from call.
        (output_sibcall): Likewise.
        * config/visium/visium.c (output_branch): Likewise.

2018-02-10  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.c (hppa_profile_hook): Mark SYMBOL_REF for _mcount as
        function label.

2018-02-10  Alan Modra  <amodra@gmail.com>

        PR target/84300
        * config/rs6000/rs6000.md (split_stack_return): Remove (use ..).
        Specify LR as an input.

2018-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83987
        * omp-low.c (maybe_remove_omp_member_access_dummy_vars,
        remove_member_access_dummy_vars): New functions.
        (lower_omp_for, lower_omp_taskreg, lower_omp_target,
        lower_omp_1, execute_lower_omp): Use them.

        PR rtl-optimization/84308
        * shrink-wrap.c (spread_components): Release todo vector.

2018-02-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/57193
        * ira-color.c (struct allocno_color_data): Add member
        conflict_allocno_hard_prefs.
        (update_conflict_allocno_hard_prefs): New.
        (bucket_allocno_compare_func): Add a preference based on
        conflict_allocno_hard_prefs.
        (push_allocno_to_stack): Update conflict_allocno_hard_prefs.
        (color_allocnos): Remove a dead code.  Initiate
        conflict_allocno_hard_prefs.  Call update_costs_from_prefs.

2018-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR target/84226
        * config/rs6000/vsx.md (p9_xxbrq_v16qi): Change input operand
        constraint from =wa to wa.  Avoid a subreg on the output operand,
        instead use a pseudo and subreg it in a move.
        (p9_xxbrd_<mode>): Changed to ...
        (p9_xxbrd_v2di): ... this insn, without VSX_D iterator.
        (p9_xxbrd_v2df): New expander.
        (p9_xxbrw_<mode>): Changed to ...
        (p9_xxbrw_v4si): ... this insn, without VSX_W iterator.
        (p9_xxbrw_v4sf): New expander.

2018-02-09  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rx/rx.md (movsicc): Update expander to be matched by GCC.

2018-02-09  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83926
        * config/rs6000/vsx.md (vsx_mul_v2di): Handle generating a 64-bit
        multiply in 32-bit mode.
        (vsx_div_v2di): Handle generating a 64-bit signed divide in 32-bit mode.
        (vsx_udiv_v2di): Handle generating a 64-bit unsigned divide in 32-bit
        mode.

2018-02-09  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rx/constraints.md (CALL_OP_SYMBOL_REF): Added new constraint
        to allow or block "symbol_ref" depending on the value of TARGET_JSR.
        * config/rx/rx.md (call_internal): Use CALL_OP_SYMBOL_REF.
        * config/rx/rx.md (call_value_internal): Use CALL_OP_SYMBOL_REF.

2018-02-09  Pierre-Marie de Rodat  <derodat@adacore.com>

        PR lto/84213
        * dwarf2out.c (is_trivial_indirect_ref): New function.
        (dwarf2out_late_global_decl): Do not generate a location
        attribute for variables that have a non-trivial DECL_VALUE_EXPR
        and that are not defined in the current unit.

2018-02-09  Eric Botcazou  <ebotcazou@adacore.com>

        * optabs.c (prepare_cmp_insn): Try harder to emit a direct comparison
        instead of a libcall for UNORDERED.

2018-02-09  Tamar Christina  <tamar.christina@arm.com>

        PR target/82641
        * config/arm/arm-c.c (arm_cpu_builtins): Un-define __ARM_FEATURE_LDREX,
        __ARM_ARCH_PROFILE, __ARM_ARCH_ISA_THUMB, __ARM_FP and __ARM_NEON_FP.

2018-02-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        PR target/PR84295
        * config/s390/s390.c (s390_set_current_function): Invoke
        s390_indirect_branch_settings also if fndecl didn't change.

2018-02-09  Alexandre Oliva  <aoliva@redhat.com>

        * config/rs6000/rs6000.md (blockage): Set length to zero.

2018-02-09  Eric Botcazou  <ebotcazou@adacore.com>

        * expr.c (optimize_bitfield_assignment_op): Remove obsolete assertion.

2018-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/84285
        * gcc.c (STATIC_LIBASAN_LIBS, STATIC_LIBTSAN_LIBS,
        STATIC_LIBLSAN_LIBS, STATIC_LIBUBSAN_LIBS): Handle -static like
        -static-lib*san.

        PR debug/84252
        * var-tracking.c (vt_add_function_parameter): Punt for non-onepart
        PARALLEL incoming that failed vt_get_decl_and_offset check.

        PR middle-end/84237
        * output.h (bss_initializer_p): Add NAMED argument, defaulted to false.
        * varasm.c (bss_initializer_p): Add NAMED argument, if true, ignore
        TREE_READONLY bit.
        (get_variable_section): For decls in named .bss* sections pass true as
        second argument to bss_initializer_p.

2018-02-09  Marek Polacek  <polacek@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/83659
        * fold-const.c (fold_indirect_ref_1): Use VECTOR_TYPE_P macro.
        Formatting fixes.  Verify first that tree_fits_poly_int64_p (op01).
        Sync some changes from cxx_fold_indirect_ref.

2018-02-09  Alexandre Oliva  <aoliva@redhat.com>

        * cfgexpand.c (expand_gimple_basic_block): Handle inline entry
        markers.
        * dwarf2out.c (dwarf2_debug_hooks): Enable inline_entry hook.
        (BLOCK_INLINE_ENTRY_LABEL): New.
        (dwarf2out_var_location): Disregard inline entry markers.
        (inline_entry_data): New struct.
        (inline_entry_data_hasher): New hashtable type.
        (inline_entry_data_hasher::hash): New.
        (inline_entry_data_hasher::equal): New.
        (inline_entry_data_table): New variable.
        (add_high_low_attributes): Add DW_AT_entry_pc and
        DW_AT_GNU_entry_view attributes if a pending entry is found
        in inline_entry_data_table.  Add old entry_pc attribute only
        if debug nonbinding markers are disabled.
        (gen_inlined_subroutine_die): Set BLOCK_DIE if nonbinding
        markers are enabled.
        (block_within_block_p, dwarf2out_inline_entry): New.
        (dwarf2out_finish): Check that no entries remained in
        inline_entry_data_table.
        * final.c (reemit_insn_block_notes): Handle inline entry notes.
        (final_scan_insn, notice_source_line): Likewise.
        (rest_of_clean_state): Skip inline entry markers.
        * gimple-pretty-print.c (dump_gimple_debug): Handle inline entry
        markers.
        * gimple.c (gimple_build_debug_inline_entry): New.
        * gimple.h (enum gimple_debug_subcode): Add
        GIMPLE_DEBUG_INLINE_ENTRY.
        (gimple_build_debug_inline_entry): Declare.
        (gimple_debug_inline_entry_p): New.
        (gimple_debug_nonbind_marker_p): Adjust.
        * insn-notes.def (INLINE_ENTRY): New.
        * print-rtl.c (rtx_writer::print_rtx_operand_code_0): Handle
        inline entry marker notes.
        (print_insn): Likewise.
        * rtl.h (NOTE_MARKER_P): Add INLINE_ENTRY support.
        (INSN_DEBUG_MARKER_KIND): Likewise.
        (GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT): New.
        * tree-inline.c (expand_call_inline): Build and insert
        debug_inline_entry stmt.
        * tree-ssa-live.c (remove_unused_scope_block_p): Preserve
        inline entry blocks early, if nonbind markers are enabled.
        (dump_scope_block): Dump fragment info.
        * var-tracking.c (reemit_marker_as_note): Handle inline entry note.
        * doc/gimple.texi (gimple_debug_inline_entry_p): New.
        (gimple_build_debug_inline_entry): New.
        * doc/invoke.texi (gstatement-frontiers, gno-statement-frontiers):
        Enable/disable inline entry points too.
        * doc/rtl.texi (NOTE_INSN_INLINE_ENTRY): New.
        (DEBUG_INSN): Describe inline entry markers.

        * common.opt (gvariable-location-views): New.
        (gvariable-location-views=incompat5): New.
        * config.in: Rebuilt.
        * configure: Rebuilt.
        * configure.ac: Test assembler for view support.
        * dwarf2asm.c (dw2_asm_output_symname_uleb128): New.
        * dwarf2asm.h (dw2_asm_output_symname_uleb128): Declare.
        * dwarf2out.c (var_loc_view): New typedef.
        (struct dw_loc_list_struct): Add vl_symbol, vbegin, vend.
        (dwarf2out_locviews_in_attribute): New.
        (dwarf2out_locviews_in_loclist): New.
        (dw_val_equal_p): Compare val_view_list of dw_val_class_view_lists.
        (enum dw_line_info_opcode): Add LI_adv_address.
        (struct dw_line_info_table): Add view.
        (RESET_NEXT_VIEW, RESETTING_VIEW_P): New macros.
        (DWARF2_ASM_VIEW_DEBUG_INFO): Define default.
        (zero_view_p): New variable.
        (ZERO_VIEW_P): New macro.
        (output_asm_line_debug_info): New.
        (struct var_loc_node): Add view.
        (add_AT_view_list, AT_loc_list): New.
        (add_var_loc_to_decl): Add view param.  Test it against last.
        (new_loc_list): Add view params.  Record them.
        (AT_loc_list_ptr): Handle loc and view lists.
        (view_list_to_loc_list_val_node): New.
        (print_dw_val): Handle dw_val_class_view_list.
        (size_of_die): Likewise.
        (value_format): Likewise.
        (loc_list_has_views): New.
        (gen_llsym): Set vl_symbol too.
        (maybe_gen_llsym, skip_loc_list_entry): New.
        (dwarf2out_maybe_output_loclist_view_pair): New.
        (output_loc_list): Output view list or entries too.
        (output_view_list_offset): New.
        (output_die): Handle dw_val_class_view_list.
        (output_dwarf_version): New.
        (output_compilation_unit_header): Use it.
        (output_skeleton_debug_sections): Likewise.
        (output_rnglists, output_line_info): Likewise.
        (output_pubnames, output_aranges): Update version comments.
        (output_one_line_info_table): Output view numbers in asm comments.
        (dw_loc_list): Determine current endview, pass it to new_loc_list.
        Call maybe_gen_llsym.
        (loc_list_from_tree_1): Adjust.
        (add_AT_location_description): Create view list attribute if
        needed, check it's absent otherwise.
        (convert_cfa_to_fb_loc_list): Adjust.
        (maybe_emit_file): Call output_asm_line_debug_info for test.
        (dwarf2out_var_location): Reset views as needed.  Precompute
        add_var_loc_to_decl args.  Call get_attr_min_length only if we have the
        attribute.  Set view.
        (new_line_info_table): Reset next view.
        (set_cur_line_info_table): Call output_asm_line_debug_info for test.
        (dwarf2out_source_line): Likewise.  Output view resets and labels to
        the assembler, or select appropriate line info opcodes.
        (prune_unused_types_walk_attribs): Handle dw_val_class_view_list.
        (optimize_string_length): Catch it.  Adjust.
        (resolve_addr): Copy vl_symbol along with ll_symbol.  Handle
        dw_val_class_view_list, and remove it if no longer needed.
        (hash_loc_list): Hash view numbers.
        (loc_list_hasher::equal): Compare them.
        (optimize_location_lists): Check whether a view list symbol is
        needed, and whether the locview attribute is present, and
        whether they match.  Remove the locview attribute if no longer
        needed.
        (index_location_lists): Call skip_loc_list_entry for test.
        (dwarf2out_finish): Call output_asm_line_debug_info for test.
        Use output_dwarf_version.
        * dwarf2out.h (enum dw_val_class): Add dw_val_class_view_list.
        (struct dw_val_node): Add val_view_list.
        * final.c (SEEN_NEXT_VIEW): New.
        (set_next_view_needed): New.
        (clear_next_view_needed): New.
        (maybe_output_next_view): New.
        (final_start_function): Rename to...
        (final_start_function_1): ... this.  Take pointer to FIRST,
        add SEEN parameter.  Emit param bindings in the initial view.
        (final_start_function): Reintroduce SEEN-less interface.
        (final): Rename to...
        (final_1): ... this.  Take SEEN parameter.  Output final pending
        next view at the end.
        (final): Reintroduce seen-less interface.
        (final_scan_insn): Output pending next view before switching
        sections or ending a block.  Mark the next view as needed when
        outputting variable locations.  Notify debug backend of section
        changes, and of location view changes.
        (rest_of_handle_final): Adjust.
        * toplev.c (process_options): Autodetect value for debug variable
        location views option.  Warn on incompat5 without -gdwarf-5.
        * doc/invoke.texi (gvariable-location-views): New.
        (gvariable-location-views=incompat5): New.
        (gno-variable-location-views): New.

2018-02-08  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/84136
        * tree-cfg.c (find_taken_edge_computed_goto): Remove assertion
        that the result of find_edge is non-NULL.

2018-02-08  Sergey Shalnov  <sergey.shalnov@intel.com>

        PR target/83008
        * config/i386/x86-tune-costs.h (skylake_cost): Fix cost of
        storing integer register in SImode.  Fix cost of 256 and 512
        byte aligned SSE register store.

2018-02-08  Sergey Shalnov  <sergey.shalnov@intel.com>

        * config/i386/i386.c (ix86_multiplication_cost): Fix
        multiplication cost for TARGET_AVX512DQ.

2018-02-08  Marek Polacek  <polacek@redhat.com>

        PR tree-optimization/84238
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Verify the result of
        get_range_strlen.

2018-02-08  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84265
        * tree-vect-stmts.c (vectorizable_store): Don't treat
        VMAT_CONTIGUOUS accesses as grouped.
        (vectorizable_load): Likewise.

2018-02-08  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/81635
        * wide-int.h (wi::round_down_for_mask, wi::round_up_for_mask): Declare.
        * wide-int.cc (wi::round_down_for_mask, wi::round_up_for_mask)
        (test_round_for_mask): New functions.
        (wide_int_cc_tests): Call test_round_for_mask.
        * tree-vrp.h (intersect_range_with_nonzero_bits): Declare.
        * tree-vrp.c (intersect_range_with_nonzero_bits): New function.
        * tree-data-ref.c (split_constant_offset_1): Use it to refine the
        range returned by get_range_info.

2018-02-08  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/81360
        * cgraph.h (symtab_node::output_to_lto_symbol_table_p): Declare
        * symtab.c: Include builtins.h
        (symtab_node::output_to_lto_symbol_table_p): Move here
        from lto-streamer-out.c:output_symbol_p.
        * lto-streamer-out.c (write_symbol): Turn early exit to assert.
        (output_symbol_p): Move all logic to symtab.c
        (produce_symtab): Update.

2018-02-08  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        * config/s390/s390-opts.h (enum indirect_branch): Define.
        * config/s390/s390-protos.h (s390_return_addr_from_memory)
        (s390_indirect_branch_via_thunk)
        (s390_indirect_branch_via_inline_thunk): Add function prototypes.
        (enum s390_indirect_branch_type): Define.
        * config/s390/s390.c (struct s390_frame_layout, struct
        machine_function): Remove.
        (indirect_branch_prez10thunk_mask, indirect_branch_z10thunk_mask)
        (indirect_branch_table_label_no, indirect_branch_table_name):
        Define variables.
        (INDIRECT_BRANCH_NUM_OPTIONS): Define macro.
        (enum s390_indirect_branch_option): Define.
        (s390_return_addr_from_memory): New function.
        (s390_handle_string_attribute): New function.
        (s390_attribute_table): Add new attribute handler.
        (s390_execute_label): Handle UNSPEC_EXECUTE_JUMP patterns.
        (s390_indirect_branch_via_thunk): New function.
        (s390_indirect_branch_via_inline_thunk): New function.
        (s390_function_ok_for_sibcall): When jumping via thunk disallow
        sibling call optimization for non z10 compiles.
        (s390_emit_call): Force indirect branch target to be a single
        register.  Add r1 clobber for non-z10 compiles.
        (s390_emit_epilogue): Emit return jump via return_use expander.
        (s390_reorg): Handle JUMP_INSNs as execute targets.
        (s390_option_override_internal): Perform validity checks for the
        new command line options.
        (s390_indirect_branch_attrvalue): New function.
        (s390_indirect_branch_settings): New function.
        (s390_set_current_function): Invoke s390_indirect_branch_settings.
        (s390_output_indirect_thunk_function):  New function.
        (s390_code_end): Implement target hook.
        (s390_case_values_threshold): Implement target hook.
        (TARGET_ASM_CODE_END, TARGET_CASE_VALUES_THRESHOLD): Define target
        macros.
        * config/s390/s390.h (struct s390_frame_layout)
        (struct machine_function): Move here from s390.c.
        (TARGET_INDIRECT_BRANCH_NOBP_RET)
        (TARGET_INDIRECT_BRANCH_NOBP_JUMP)
        (TARGET_INDIRECT_BRANCH_NOBP_JUMP_THUNK)
        (TARGET_INDIRECT_BRANCH_NOBP_JUMP_INLINE_THUNK)
        (TARGET_INDIRECT_BRANCH_NOBP_CALL)
        (TARGET_DEFAULT_INDIRECT_BRANCH_TABLE)
        (TARGET_INDIRECT_BRANCH_THUNK_NAME_EXRL)
        (TARGET_INDIRECT_BRANCH_THUNK_NAME_EX)
        (TARGET_INDIRECT_BRANCH_TABLE): Define macros.
        * config/s390/s390.md (UNSPEC_EXECUTE_JUMP)
        (INDIRECT_BRANCH_THUNK_REGNUM): Define constants.
        (mnemonic attribute): Add values which aren't recognized
        automatically.
        ("*cjump_long", "*icjump_long", "*basr", "*basr_r"): Disable
        pattern for branch conversion.  Fix mnemonic attribute.
        ("*c<code>", "*sibcall_br", "*sibcall_value_br", "*return"): Emit
        indirect branch via thunk if requested.
        ("indirect_jump", "<code>"): Expand patterns for branch conversion.
        ("*indirect_jump"): Disable for branch conversion using out of
        line thunks.
        ("indirect_jump_via_thunk<mode>_z10")
        ("indirect_jump_via_thunk<mode>")
        ("indirect_jump_via_inlinethunk<mode>_z10")
        ("indirect_jump_via_inlinethunk<mode>", "*casesi_jump")
        ("casesi_jump_via_thunk<mode>_z10", "casesi_jump_via_thunk<mode>")
        ("casesi_jump_via_inlinethunk<mode>_z10")
        ("casesi_jump_via_inlinethunk<mode>", "*basr_via_thunk<mode>_z10")
        ("*basr_via_thunk<mode>", "*basr_r_via_thunk_z10")
        ("*basr_r_via_thunk", "return<mode>_prez10"): New pattern.
        ("*indirect2_jump"): Disable for branch conversion.
        ("casesi_jump"): Turn into expander and expand patterns for branch
        conversion.
        ("return_use"): New expander.
        ("*return"): Emit return via thunk and rename it to ...
        ("*return<mode>"): ... this one.
        * config/s390/s390.opt: Add new options and and enum for the
        option values.

2018-02-08  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (match_reload): Unconditionally use
        gen_lowpart_SUBREG, rather than selecting between that
        and equivalent gen_rtx_SUBREG code.

2018-02-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84233
        * tree-ssa-phiprop.c (propagate_with_phi): Use separate
        changed flag instead of boguously re-using phi_inserted.

2018-02-08  Martin Jambor  <mjambor@suse.cz>

        * hsa-gen.c (get_symbol_for_decl): Set program allocation for
        static local variables.

2018-02-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84278
        * tree-vect-stmts.c (vectorizable_store): When looking for
        smaller vector types to perform grouped strided loads/stores
        make sure the mode is supported by the target.
        (vectorizable_load): Likewise.

2018-02-08  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.c (aarch64_components_for_bb):
        Increase LDP/STP opportunities by adding adjacent callee-saves.

2018-02-08  Wilco Dijkstra  <wdijkstr@arm.com>

        PR rtl-optimization/84068
        PR rtl-optimization/83459
        * haifa-sched.c (rank_for_schedule): Fix SCHED_PRESSURE_MODEL sorting.

2018-02-08  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/84224
        * gimple-ssa-warn-alloca.c (pass_walloca::execute): Remove assert.
        * calls.c (gimple_alloca_call_p): Only return TRUE when we have
        non-zero arguments.

2018-02-07  Iain Sandoe  <iain@codesourcery.com>

        PR target/84113
        * config/rs6000/altivec.md (*restore_world): Remove LR use.
        * config/rs6000/predicates.md (restore_world_operation): Adjust op
        count, remove one USE.

2018-02-07  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * doc/install.texi (Configuration): Document the
        --with-long-double-format={ibm,ieee} PowerPC configuration
        options.

        PR target/84154
        * config/rs6000/rs6000.md (fix_trunc<SFDF:mode><QHI:mode>2):
        Convert from define_expand to be define_insn_and_split.  Rework
        float/double/_Float128 conversions to QI/HI/SImode to work with
        both ISA 2.07 (power8) or ISA 3.0 (power9).  Fix regression where
        conversions to QI/HImode types did a store and then a load to
        truncate the value.  For conversions to VSX registers, don't split
        the insn, instead emit the code directly.  Use the code iterator
        any_fix to combine signed and unsigned conversions.
        (fix<uns>_trunc<SFDF:mode>si2_p8): Likewise.
        (fixuns_trunc<SFDF:mode><QHI:mode>2): Likewise.
        (fix_trunc<IEEE128:mode><QHI:mode>2): Likewise.
        (fix<uns>_trunc<SFDF:mode><QHI:mode>2): Likewise.
        (fix_<mode>di2_hw): Likewise.
        (fixuns_<mode>di2_hw): Likewise.
        (fix_<mode>si2_hw): Likewise.
        (fixuns_<mode>si2_hw): Likewise.
        (fix<uns>_<IEEE128:mode><SDI:mode>2_hw): Likewise.
        (fix<uns>_trunc<IEEE128:mode><QHI:mode>2): Likewise.
        (fctiw<u>z_<mode>_smallint): Rename fctiw<u>z_<mode>_smallint to
        fix<uns>_trunc<SFDF:mode>si2_p8.
        (fix_trunc<SFDF:mode><QHI:mode>2_internal): Delete, no longer used.
        (fixuns_trunc<SFDF:mode><QHI:mode>2_internal): Likewise.
        (fix<uns>_<mode>_mem): Likewise.
        (fctiw<u>z_<mode>_mem): Likewise.
        (fix<uns>_<mode>_mem): Likewise.
        (fix<uns>_trunc<SFDF:mode><QHSI:mode>2_mem): On ISA 3.0, prevent
        the register allocator from doing a direct move to the GPRs to do
        a store, and instead use the ISA 3.0 store byte/half-word from
        vector register instruction.  For IEEE 128-bit floating point,
        also optimize stores of 32-bit ints.
        (fix<uns>_trunc<IEEE128:mode><QHSI:mode>2_mem): Likewise.

2018-02-07  Alan Hayward  <alan.hayward@arm.com>

        * genextract.c (push_pathstr_operand): New function to support
        [a-zA-Z].
        (walk_rtx): Call push_pathstr_operand.
        (print_path): Support [a-zA-Z].

2018-02-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vectorizer.h (struct _loop_vec_info): Add ivexpr_map member.
        (cse_and_gimplify_to_preheader): Declare.
        (vect_get_place_in_interleaving_chain): Likewise.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
        ivexpr_map.
        (_loop_vec_info::~_loop_vec_info): Delete it.
        (cse_and_gimplify_to_preheader): New function.
        * tree-vect-slp.c (vect_get_place_in_interleaving_chain): Export.
        * tree-vect-stmts.c (vectorizable_store): CSE base and steps.
        (vectorizable_load): Likewise.  For grouped stores always base
        the IV on the first element.
        * tree-vect-loop-manip.c (vect_loop_versioning): Unshare versioning
        condition before gimplifying.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

        * tree-eh.c (operation_could_trap_helper_p): Ignore honor_trapv for
        *DIV_EXPR and *MOD_EXPR.

2018-02-07  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84248
        * config/i386/i386.c (ix86_option_override_internal): Mask out
        the CF_SET bit when checking -fcf-protection.

2018-02-07  Tom de Vries  <tom@codesourcery.com>

        PR libgomp/84217
        * omp-expand.c (expand_oacc_collapse_init): Ensure diff_type is large
        enough.

2018-02-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84204
        * tree-chrec.c (chrec_fold_plus_1): Remove size limiting in
        this place.

        PR tree-optimization/84205
        * graphite-isl-ast-to-gimple.c (binary_op_to_tree): Also
        special-case isl_ast_op_zdiv_r.

        PR tree-optimization/84223
        * graphite-scop-detection.c (gather_bbs::before_dom_children):
        Only add conditions from within the region.
        (gather_bbs::after_dom_children): Adjust.

2018-02-07  Georg-Johann Lay  <avr@gjlay.de>

        PR target/84209
        * config/avr/avr.h (GENERAL_REGNO_P, GENERAL_REG_P): New macros.
        * config/avr/avr.md: Only post-reload split REG-REG moves if
        either register is GENERAL_REG_P.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84235
        * tree-ssa-scopedtables.c
        (avail_exprs_stack::simplify_binary_operation): Fir MINUS_EXPR, punt
        if the subtraction is performed in floating point type where NaNs are
        honored.  For *DIV_EXPR, punt for ALL_FRACT_MODE_Ps where we can't
        build 1.  Formatting fix.

2018-02-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/84146
        * config/i386/i386.c (rest_of_insert_endbranch): Only skip
        NOTE_INSN_CALL_ARG_LOCATION after a call, not anything else,
        and skip it regardless of bb boundaries.  Use CALL_P macro,
        don't test INSN_P (insn) together with CALL_P or JUMP_P check
        unnecessarily, formatting fix.

2018-02-06  Michael Collison  <michael.collison@arm.com>

        * config/arm/thumb2.md:
        (*thumb2_mov_negscc): Split only if TARGET_THUMB2 && !arm_restrict_it.
        (*thumb_mov_notscc): Ditto.

2018-02-06  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/84154
        * config/rs6000/rs6000.md (su code attribute): Use "u" for
        unsigned_fix, not "s".

2018-02-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * configure.ac (gcc_fn_eh_frame_ro): New function.
        (gcc_cv_as_cfi_directive): Check both 32 and 64-bit assembler for
        correct .eh_frame permissions.
        * configure: Regenerate.

2018-02-06  Andrew Jenner  <andrew@codeourcery.com>

        * doc/invoke.texi: Add section for the PowerPC SPE backend. Remove
        irrelevant options.

2018-02-06  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Display warning message for -mno-speculate-indirect-jumps.

2018-02-06  Andrew Jenner  <andrew@codesourcery.com>

        * config/powerpcspe/powerpcspe.opt: (msimple-fpu, mfpu) Add
        Undocumented.
        * config/powerpcspe/sysv4.opt (mbit-align): Likewise.

2018-02-06  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/84225
        * tree-eh.c (find_trapping_overflow): Only call
        operation_no_trapping_overflow when ANY_INTEGRAL_TYPE_P.

2018-02-06  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84145
        * config/i386/i386.c: Reimplement the check of possible options
        -mibt/-mshstk conbination. Change error messages.
        * doc/invoke.texi: Fix a typo: remove extra '='.

2018-02-06  Marek Polacek  <polacek@redhat.com>

        PR tree-optimization/84228
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Skip debug statements.

2018-02-06  Tamar Christina  <tamar.christina@arm.com>

        PR target/82641
        * config/arm/arm.c (arm_print_asm_arch_directives): Record already
        emitted arch directives.
        * config/arm/arm-c.c (arm_cpu_builtins): Undefine __ARM_ARCH and
        __ARM_FEATURE_COPROC before changing architectures.

2018-02-06  Richard Biener  <rguenther@suse.de>

        * config/i386/i386.c (print_reg): Fix typo.
        (ix86_loop_unroll_adjust): Do not unroll beyond the original nunroll.

2018-02-06  Eric Botcazou  <ebotcazou@adacore.com>

        * configure: Regenerate.

2018-02-05  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83369
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Use %G to print
        inlining context.

2018-02-05  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Cherry-pick upstream r323995.

2018-02-05  Richard Sandiford  <richard.sandiford@linaro.org>

        * ira.c (ira_init_register_move_cost): Adjust comment.

2018-02-05  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84137
        * doc/gcov.texi: Fix typo in documentation.

2018-02-05  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83879
        * doc/gcov.texi: Document necessity of --dynamic-list-data when
        using dlopen functionality.

2018-02-05  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/avx512dqintrin.h (_mm_mask_range_sd, _mm_maskz_range_sd,
        _mm_mask_range_round_sd, _mm_maskz_range_round_sd, _mm_mask_range_ss,
        _mm_maskz_range_ss, _mm_mask_range_round_ss,
        _mm_maskz_range_round_ss): New intrinsics.
        (__builtin_ia32_rangesd128_round)
        (__builtin_ia32_rangess128_round): Remove.
        (__builtin_ia32_rangesd128_mask_round,
        __builtin_ia32_rangess128_mask_round): New builtins.
        * config/i386/i386-builtin.def (__builtin_ia32_rangesd128_round,
        __builtin_ia32_rangess128_round): Remove.
        (__builtin_ia32_rangesd128_mask_round,
        __builtin_ia32_rangess128_mask_round): New builtins.
        * config/i386/sse.md (ranges<mode><round_saeonly_name>): Renamed to ...
        (ranges<mode><mask_scalar_name><round_saeonly_scalar_name>): ... this.
        ((match_operand:VF_128 2 "<round_saeonly_nimm_predicate>"
        "<round_saeonly_constraint>")): Changed to ...
        ((match_operand:VF_128 2 "<round_saeonly_scalar_nimm_predicate>"
        "<round_saeonly_scalar_constraint>")): ... this.
        ("vrange<ssescalarmodesuffix>\t{%3, <round_saeonly_op4>%2, %1, %0|
        %0, %1, %2<round_saeonly_op4>, %3}"): Changed to ...
        ("vrange<ssescalarmodesuffix>\t{%3, <round_saeonly_scalar_mask_op4>%2,
        %1, %0<mask_scalar_operand4>|%0<mask_scalar_operand4>, %1,
        %2<round_saeonly_scalar_mask_op4>, %3}"): ... this.

2018-02-02  Andrew Jenner  <andrew@codesourcery.com>

        * config/powerpcspe/powerpcspe.opt: Add Undocumented to irrelevant
        options.
        * config/powerpcspe/powerpcspe-tables.opt (rs6000_cpu_opt_value):
        Remove all values except native, 8540 and 8548.

2018-02-02  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (ix86_output_function_return): Pass
        INVALID_REGNUM, instead of -1, as invalid register number to
        indirect_thunk_name and output_indirect_thunk.

2018-02-02  Julia Koval  <julia.koval@intel.com>

        * config.gcc: Add -march=icelake.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect icelake.
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle icelake.
        * config/i386/i386.c (processor_costs): Add m_ICELAKE.
        (PTA_ICELAKE, PTA_AVX512VNNI, PTA_GFNI, PTA_VAES, PTA_AVX512VBMI2,
        PTA_VPCLMULQDQ, PTA_RDPID, PTA_AVX512BITALG): New.
        (processor_target_table): Add icelake.
        (ix86_option_override_internal): Handle new PTAs.
        (get_builtin_code_for_version): Handle icelake.
        (M_INTEL_COREI7_ICELAKE): New.
        (fold_builtin_cpu): Handle icelake.
        * config/i386/i386.h (TARGET_ICELAKE, PROCESSOR_ICELAKE): New.
        * doc/invoke.texi: Add -march=icelake.

2018-02-02  Julia Koval  <julia.koval@intel.com>

        * config/i386/i386.c (ix86_option_override_internal): Change flags type
        to wide_int_bitmask.
        * wide-int-bitmask.h: New.

2018-02-02  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84066
        * config/i386/i386.md: Replace Pmode with word_mode in
        builtin_setjmp_setup and builtin_longjmp to support x32.

2018-02-01  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/56010
        PR target/83743
        * config/rs6000/driver-rs6000.c: #include "diagnostic.h".
        #include "opts.h".
        (rs6000_supported_cpu_names): New static variable.
        (linux_cpu_translation_table): Likewise.
        (elf_platform) <cpu>: Define new static variable and use it.
        Translate kernel AT_PLATFORM name to canonical name if needed.
        Error if platform name is unknown.

2018-02-01  Aldy Hernandez  <aldyh@redhat.com>

        PR target/84089
        * config/pa/predicates.md (base14_operand): Handle E_VOIDmode.

2018-02-01  Jeff Law  <law@redhat.com>

        PR target/84128
        * config/i386/i386.c (release_scratch_register_on_entry): Add new
        OFFSET and RELEASE_VIA_POP arguments.  Use SP+OFFSET to restore
        the scratch if RELEASE_VIA_POP is false.
        (ix86_adjust_stack_and_probe_stack_clash): Un-constify SIZE.
        If we have to save a temporary register, decrement SIZE appropriately.
        Pass new arguments to release_scratch_register_on_entry.
        (ix86_adjust_stack_and_probe): Likewise.
        (ix86_emit_probe_stack_range): Pass new arguments to
        release_scratch_register_on_entry.

2018-02-01  Uros Bizjak  <ubizjak@gmail.com>

        PR rtl-optimization/84157
        * combine.c (change_zero_ext): Use REG_P predicate in
        front of HARD_REGISTER_P predicate.

2018-02-01  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.c (avr_option_override): Move disabling of
        -fdelete-null-pointer-checks to...
        * common/config/avr/avr-common.c (avr_option_optimization_table):
        ...here.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/81635
        * tree-data-ref.c (split_constant_offset_1): For types that
        wrap on overflow, try to use range info to prove that wrapping
        cannot occur.

2018-02-01  Renlin Li  <renlin.li@arm.com>

        PR target/83370
        * config/aarch64/aarch64.c (aarch64_class_max_nregs): Handle
        TAILCALL_ADDR_REGS.
        (aarch64_register_move_cost): Likewise.
        * config/aarch64/aarch64.h (reg_class): Rename CALLER_SAVE_REGS to
        TAILCALL_ADDR_REGS.
        (REG_CLASS_NAMES): Likewise.
        (REG_CLASS_CONTENTS): Rename CALLER_SAVE_REGS to
        TAILCALL_ADDR_REGS. Remove IP registers.
        * config/aarch64/aarch64.md (Ucs): Update register constraint.

2018-02-01  Richard Biener  <rguenther@suse.de>

        * domwalk.h (dom_walker::dom_walker): Add additional constructor
        for specifying RPO order and allow NULL for that.
        * domwalk.c (dom_walker::dom_walker): Likewise.
        (dom_walker::walk): Handle NULL RPO order.
        * tree-into-ssa.c (rewrite_dom_walker): Do not walk dom children
        in RPO order.
        (rewrite_update_dom_walker): Likewise.
        (mark_def_dom_walker): Likewise.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-protos.h (aarch64_split_sve_subreg_move)
        (aarch64_maybe_expand_sve_subreg_move): Declare.
        * config/aarch64/aarch64.md (UNSPEC_REV_SUBREG): New unspec.
        * config/aarch64/predicates.md (aarch64_any_register_operand): New
        predicate.
        * config/aarch64/aarch64-sve.md (mov<mode>): Optimize subreg moves
        that are semantically a reverse operation.
        (*aarch64_sve_mov<mode>_subreg_be): New pattern.
        * config/aarch64/aarch64.c (aarch64_maybe_expand_sve_subreg_move):
        (aarch64_replace_reg_mode, aarch64_split_sve_subreg_move): New
        functions.
        (aarch64_can_change_mode_class): For big-endian, forbid changes
        between two SVE modes if they have different element sizes.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_expand_sve_const_vector): Prefer
        the TImode handling for big-endian targets.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-sve.md (sve_ld1rq): Replace with...
        (*sve_ld1rq<Vesize>): ... this new pattern.  Handle all element sizes,
        not just bytes.
        * config/aarch64/aarch64.c (aarch64_expand_sve_widened_duplicate):
        Remove BSWAP handing for big-endian targets and use the form of
        LD1RQ appropariate for the mode.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_simd_valid_immediate): Handle
        all CONST_VECTOR_DUPLICATE_P vectors, not just those with a single
        duplicated element.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tearget/83845
        * config/aarch64/aarch64.c (aarch64_secondary_reload): Tighten
        check for operands that need to go through aarch64_sve_reload_be.

2018-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/81661
        PR tree-optimization/84117
        * tree-eh.h (rewrite_to_non_trapping_overflow): Declare.
        * tree-eh.c: Include gimplify.h.
        (find_trapping_overflow, replace_trapping_overflow,
        rewrite_to_non_trapping_overflow): New functions.
        * tree-vect-loop.c: Include tree-eh.h.
        (vect_get_loop_niters): Use rewrite_to_non_trapping_overflow.
        * tree-data-ref.c: Include tree-eh.h.
        (get_segment_min_max): Use rewrite_to_non_trapping_overflow.

2018-01-31  Uros Bizjak  <ubizjak@gmail.com>

        PR rtl-optimization/84123
        * combine.c (change_zero_ext): Check if hard register satisfies
        can_change_dest_mode before calling gen_lowpart_SUBREG.

2018-01-31  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/82444
        * ira.c (ira_init_register_move_cost): Remove assert.

2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/84071
        * doc/tm.texi.in (WORD_REGISTER_OPERATIONS): Add explicit case.
        * doc/tm.texi: Regenerate.

2018-01-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84132
        * tree-data-ref.c (analyze_miv_subscript): Properly
        check whether evolution_function_is_affine_multivariate_p
        before calling gcd_of_steps_may_divide_p.

2018-01-31  Julia Koval  <julia.koval@intel.com>

        PR target/83618
        * config/i386/i386.c (ix86_expand_builtin): Handle IX86_BUILTIN_RDPID.
        * config/i386/i386.md (rdpid_rex64) New.
        (rdpid): Make 32bit only.

2018-01-29  Aldy Hernandez  <aldyh@redhat.com>

        PR lto/84105
        * tree-pretty-print.c (dump_generic_node): Handle a TYPE_NAME with
        an IDENTIFIER_NODE for FUNCTION_TYPE's.

2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        Revert
        2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.md (vxworks_load_got): Set the GOT register.

2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/84071
        * combine.c (record_dead_and_set_regs_1): Record the source unmodified
        for a paradoxical SUBREG on a WORD_REGISTER_OPERATIONS target.

2018-01-31  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_handle_aux_attribute): New function.
        (arc_attribute_table): Add 'aux' attribute.
        (arc_in_small_data_p): Consider aux like variables.
        (arc_is_aux_reg_p): New function.
        (arc_asm_output_aligned_decl_local): Ignore 'aux' like variables.
        (arc_get_aux_arg): New function.
        (prepare_move_operands): Handle aux-register access.
        (arc_handle_aux_attribute): New function.
        * doc/extend.texi (ARC Variable attributes): Add subsection.

2018-01-31  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (arc_is_uncached_mem_p): Function proto.
        * config/arc/arc.c (arc_handle_uncached_attribute): New function.
        (arc_attribute_table): Add 'uncached' attribute.
        (arc_print_operand): Print '.di' flag for uncached memory
        accesses.
        (arc_in_small_data_p): Do not consider for small data the uncached
        types.
        (arc_is_uncached_mem_p): New function.
        * config/arc/predicates.md (compact_store_memory_operand): Check
        for uncached memory accesses.
        (nonvol_nonimm_operand): Likewise.
        * doc/extend.texi (ARC Type Attribute): New subsection.

2018-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR c/84100
        * common.opt (falign-functions=, falign-jumps=, falign-labels=,
        falign-loops=): Add Optimization flag.

2018-01-30  Jeff Law  <law@redhat.com>

        PR target/84064
        * i386.c (ix86_adjust_stack_and_probe_stack_clash): New argument
        INT_REGISTERS_SAVED.  Check it prior to calling
        get_scratch_register_on_entry.
        (ix86_adjust_stack_and_probe): Similarly.
        (ix86_emit_probe_stack_range): Similarly.
        (ix86_expand_prologue): Corresponding changes.

2018-01-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR target/40411
        * config/sol2.h (STARTFILE_ARCH_SPEC): Use -std=c*,
        -std=iso9899:199409 instead of -pedantic to select values-Xc.o.

2018-01-30  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/84112
        * lra-constraints.c (curr_insn_transform): Process AND in the
        address.

2018-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/83986
        * sched-deps.c (sched_analyze_insn): For frame related insns, add anti
        dependence against last_pending_memory_flush in addition to
        pending_jump_insns.

2018-01-30  Alexandre Oliva  <aoliva@redhat.com>

        PR tree-optimization/81611
        * tree-ssa-dom.c (simple_iv_increment_p): Skip intervening
        copies.

2018-01-30  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        PR target/83758
        * config/rs6000/rs6000.c (rs6000_internal_arg_pointer): Only return
        a reg rtx.

2018-01-30  Richard Biener  <rguenther@suse.de>
            Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84111
        * tree-ssa-loop-ivcanon.c (tree_unroll_loops_completely_1): Skip
        inner loops added during recursion, as they don't have up-to-date
        SSA form.

2018-01-30  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/81360
        * ipa-inline.c (can_inline_edge_p): Break out late tests to...
        (can_inline_edge_by_limits_p): ... here.
        (can_early_inline_edge_p, check_callers,
        update_caller_keys, update_callee_keys, recursive_inlining,
        add_new_edges_to_heap, speculation_useful_p,
        inline_small_functions,
        inline_small_functions, flatten_function,
        inline_to_all_callers_1): Update.

2018-01-30  Jan Hubicka  <hubicka@ucw.cz>

        * profile-count.c (profile_count::combine_with_ipa_count): Handle
        zeros correctly.

2018-01-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83008
        * tree-vect-slp.c (vect_analyze_slp_cost_1): Properly cost
        invariant and constant vector uses in stmts when they need
        more than one stmt.

2018-01-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR bootstrap/84017
        * configure.ac (gcc_cv_as_shf_merge): Disable on Solaris 10/x86.
        * configure: Regenerate.

2018-01-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-sve.md (*vec_extract<mode><Vel>_0): New
        pattern.
        (*vec_extract<mode><Vel>_v128): Require a nonzero lane number.
        Use gen_rtx_REG rather than gen_lowpart.

2018-01-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (match_reload): Use subreg_lowpart_offset
        rather than 0 when creating partial subregs.

2018-01-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * vec-perm-indices.c (vec_perm_indices::series_p): Give examples
        of usage.

2018-01-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/81550
        * config/rs6000/rs6000.c (rs6000_setup_reg_addr_masks): If DFmode
        and SFmode can go in Altivec registers (-mcpu=power7 for DFmode,
        -mcpu=power8 for SFmode) don't set the PRE_INCDEC or PRE_MODIFY
        flags.  This restores the settings used before the 2017-07-24.
        Turning off pre increment/decrement/modify allows IVOPTS to
        optimize DF/SF loops where the index is an int.

2018-01-29  Richard Biener  <rguenther@suse.de>
            Kelvin Nilsen  <kelvin@gcc.gnu.org>

        PR bootstrap/80867
        * tree-vect-stmts.c (vectorizable_call): Don't call
        targetm.vectorize_builtin_md_vectorized_function if callee is
        NULL.

2018-01-22  Carl Love  <cel@us.ibm.com>

        * doc/extend.tex: Fix typo in second arg in
        __builtin_bcdadd_{lt|eq|gt|ov} and __builtin_bcdsub_{lt|eq|gt|ov}.

2018-01-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84086
        * tree-ssanames.c: Include cfgloop.h and tree-scalar-evolution.h.
        (flush_ssaname_freelist): When SSA names were released reset
        the SCEV hash table.

2018-01-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84057
        * tree-ssa-loop-ivcanon.c (unloop_loops): Deal with already
        removed paths when removing edges.

2018-01-27  H.J. Lu  <hongjiu.lu@intel.com>

        * doc/invoke.texi: Replace -mfunction-return==@var{choice} with
        -mfunction-return=@var{choice}.

2018-01-27  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR diagnostic/84034
        * diagnostic-show-locus.c (get_line_width_without_trailing_whitespace):
        Handle CR like TAB.
        (layout::print_source_line): Likewise.
        (test_get_line_width_without_trailing_whitespace): Add test cases.

2018-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/84040
        * sched-deps.c (sched_macro_fuse_insns): Return immediately for
        debug insns.

2018-01-26  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.h (MAX_FIXED_MODE_SIZE): New.

        * config/riscv/elf.h (LIB_SPEC): Don't include -lgloss when nosys.specs
        specified.

2018-01-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.md: Add peepholes for CMP + SUB -> SUBS
        and CMP + SUB-immediate -> SUBS.

2018-01-26  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83896
        * tree-ssa-strlen.c (get_string_len): Rename...
        (get_string_cst_length): ...to this.  Return HOST_WIDE_INT.
        Avoid assuming length is constant.
        (handle_char_store): Use HOST_WIDE_INT for string length.

2018-01-26  Uros Bizjak  <ubizjak@gmail.com>

        PR target/81763
        * config/i386/i386.md (*andndi3_doubleword): Add earlyclobber
        to (=&r,r,rm) alternative. Add (=r,0,rm) and (=r,r,0) alternatives.

2018-01-26  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/84003
        * dse.c (record_store): Only record redundant stores when
        the earlier store aliases at least all accesses the later one does.

2018-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/83985
        * dce.c (deletable_insn_p): Return false for separate shrink wrapping
        REG_CFA_RESTORE insns.
        (delete_unmarked_insns): Don't ignore separate shrink wrapping
        REG_CFA_RESTORE insns here.

        PR c/83989
        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Don't
        use SSA_NAME_VAR as base for SSA_NAMEs with non-NULL SSA_NAME_VAR.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arch.h (arc_tune_attr): Add ARC_TUNE_CORE_3.
        * config/arc/arc.c (arc_sched_issue_rate): Use ARC_TUNE_... .
        (arc_init): Likewise.
        (arc_override_options): Likewise.
        (arc_file_start): Choose Tag_ARC_CPU_variation based on arc_tune
        value.
        (hwloop_fail): Use TARGET_DBNZ when we want to check for dbnz insn
        support.
        * config/arc/arc.h (TARGET_DBNZ): Define.
        * config/arc/arc.md (attr tune): Add core_3, use ARC_TUNE_... to
        properly set the tune attribute.
        (dbnz): Use TARGET_DBNZ guard.
        * config/arc/arc.opt (mtune): Add core3 option.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_delegitimize_address_0): Refactored to
        recognize new pic like addresses.
        (arc_delegitimize_address): Clean up.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arches.def: Option mrf16 valid for all
        architectures.
        * config/arc/arc-c.def (__ARC_RF16__): New predefined macro.
        * config/arc/arc-cpus.def (em_mini): New cpu with rf16 on.
        * config/arc/arc-options.def (FL_RF16): Add mrf16 option.
        * config/arc/arc-tables.opt: Regenerate.
        * config/arc/arc.c (arc_conditional_register_usage): Handle
        reduced register file case.
        (arc_file_start): Set must have build attributes.
        * config/arc/arc.h (MAX_ARC_PARM_REGS): Conditional define using
        mrf16 option value.
        * config/arc/arc.opt (mrf16): Add new option.
        * config/arc/elf.h (ATTRIBUTE_PCS): Define.
        * config/arc/genmultilib.awk: Handle new mrf16 option.
        * config/arc/linux.h (ATTRIBUTE_PCS): Define.
        * config/arc/t-multilib: Regenerate.
        * doc/invoke.texi (ARC Options): Document mrf16 option.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h: Add arc_is_secure_call_p proto.
        * config/arc/arc.c (arc_handle_secure_attribute): New function.
        (arc_attribute_table): Add 'secure_call' attribute.
        (arc_print_operand): Print secure call operand.
        (arc_function_ok_for_sibcall): Don't optimize tail calls when
        secure.
        (arc_is_secure_call_p): New function.  * config/arc/arc.md
        (call_i): Add support for sjli instruction.
        (call_value_i): Likewise.
        * config/arc/constraints.md (Csc): New constraint.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>
            John Eric Martin  <John.Martin@emmicro-us.com>

        * config/arc/arc-protos.h: Add arc_is_jli_call_p proto.
        * config/arc/arc.c (_arc_jli_section): New struct.
        (arc_jli_section): New type.
        (rc_jli_sections): New static variable.
        (arc_handle_jli_attribute): New function.
        (arc_attribute_table): Add jli_always and jli_fixed attribute.
        (arc_file_end): New function.
        (TARGET_ASM_FILE_END): Define.
        (arc_print_operand): Reuse 'S' letter for JLI output instruction.
        (arc_add_jli_section): New function.
        (jli_call_scan): Likewise.
        (arc_reorg): Call jli_call_scan.
        (arc_output_addsi): Remove 'S' from printing asm operand.
        (arc_is_jli_call_p): New function.
        * config/arc/arc.md (movqi_insn): Remove 'S' from printing asm
        operand.
        (movhi_insn): Likewise.
        (movsi_insn): Likewise.
        (movsi_set_cc_insn): Likewise.
        (loadqi_update): Likewise.
        (load_zeroextendqisi_update): Likewise.
        (load_signextendqisi_update): Likewise.
        (loadhi_update): Likewise.
        (load_zeroextendhisi_update): Likewise.
        (load_signextendhisi_update): Likewise.
        (loadsi_update): Likewise.
        (loadsf_update): Likewise.
        (movsicc_insn): Likewise.
        (bset_insn): Likewise.
        (bxor_insn): Likewise.
        (bclr_insn): Likewise.
        (bmsk_insn): Likewise.
        (bicsi3_insn): Likewise.
        (cmpsi_cc_c_insn): Likewise.
        (movsi_ne): Likewise.
        (movsi_cond_exec): Likewise.
        (clrsbsi2): Likewise.
        (norm_f): Likewise.
        (normw): Likewise.
        (swap): Likewise.
        (divaw): Likewise.
        (flag): Likewise.
        (sr): Likewise.
        (kflag): Likewise.
        (ffs): Likewise.
        (ffs_f): Likewise.
        (fls): Likewise.
        (call_i): Remove 'S' asm letter, add jli instruction.
        (call_value_i): Likewise.
        * config/arc/arc.op (mjli-always): New option.
        * config/arc/constraints.md (Cji): New constraint.
        * config/arc/fpx.md (addsf3_fpx): Remove 'S' from printing asm
        operand.
        (subsf3_fpx): Likewise.
        (mulsf3_fpx): Likewise.
        * config/arc/simdext.md (vendrec_insn): Remove 'S' from printing
        asm operand.
        * doc/extend.texi (ARC): Document 'jli-always' and 'jli-fixed'
        function attrbutes.
        * doc/invoke.texi (ARC): Document mjli-always option.

2018-01-26  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.c (rl78_addsi3_internal): If operand 2 is const
        avoid addition with 0 and use incw and decw where possible.

2018-01-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81082
        * fold-const.c (fold_plusminus_mult_expr): Do not perform the
        association if it requires casting to unsigned.
        * match.pd ((A * C) +- (B * C) -> (A+-B)): New patterns derived
        from fold_plusminus_mult_expr to catch important cases late when
        range info is available.

2018-01-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * config/i386/sol2.h (USE_HIDDEN_LINKONCE): Remove.
        * configure.ac (hidden_linkonce): New test.
        * configure: Regenerate.
        * config.in: Regenerate.

2018-01-26  Julia Koval  <julia.koval@intel.com>

        * config/i386/avx512bitalgintrin.h (_mm512_bitshuffle_epi64_mask,
        _mm512_mask_bitshuffle_epi64_mask, _mm256_bitshuffle_epi64_mask,
        _mm256_mask_bitshuffle_epi64_mask, _mm_bitshuffle_epi64_mask,
        _mm_mask_bitshuffle_epi64_mask): Fix type.
        * config/i386/i386-builtin-types.def (UHI_FTYPE_V2DI_V2DI_UHI,
        USI_FTYPE_V4DI_V4DI_USI): Remove.
        * config/i386/i386-builtin.def (__builtin_ia32_vpshufbitqmb512_mask,
        __builtin_ia32_vpshufbitqmb256_mask,
        __builtin_ia32_vpshufbitqmb128_mask): Fix types.
        * config/i386/i386.c (ix86_expand_args_builtin): Remove old types.
        * config/i386/sse.md (VI1_AVX512VLBW): Change types.

2018-01-26  Alan Modra  <amodra@gmail.com>

        PR target/84033
        * config/rs6000/rs6000-p8swap.c (rtx_is_swappable_p): Exclude
        UNSPEC_VBPERMQ.  Sort other unspecs.

2018-01-25  David Edelsohn  <dje.gcc@gmail.com>

        * doc/invoke.texi (PowerPC Options): Document 'native' cpu type.

2018-01-25  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83055
        * predict.c (drop_profile): Do not push/pop cfun; update also
        node->count.
        (handle_missing_profiles): Fix logic looking for zero profiles.

2018-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83977
        * ipa-fnsummary.c (compute_fn_summary): Clear can_change_signature
        on functions with #pragma omp declare simd or functions with simd
        attribute.
        * omp-simd-clone.c (expand_simd_clones): Revert 2018-01-24 change.
        * config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
        Remove trailing \n from warning_at calls.

2018-01-25  Tom de Vries  <tom@codesourcery.com>

        PR target/84028
        * config/nvptx/nvptx.c (nvptx_single): Add exit insn after noreturn call
        for neutered workers.

2018-01-24  Joseph Myers  <joseph@codesourcery.com>

        PR target/68467
        * config/m68k/m68k.c (m68k_promote_function_mode): New function.
        (TARGET_PROMOTE_FUNCTION_MODE): New macro.

2018-01-24  Jeff Law  <law@redhat.com>

        PR target/83994
        * i386.c (get_probe_interval): Move to earlier point.
        (ix86_compute_frame_layout): If -fstack-clash-protection and
        the frame is larger than the probe interval, then use pushes
        to save registers rather than reg->mem moves.
        (ix86_expand_prologue): Remove conditional for int_registers_saved
        assertion.

2018-01-24  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/84014
        * ira-build.c (setup_min_max_allocno_live_range_point): Set up
        min/max for never referenced object.

2018-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83977
        * tree.c (free_lang_data_in_decl): Don't clear DECL_ABSTRACT_ORIGIN
        here.
        * omp-low.c (create_omp_child_function): Remove "omp declare simd"
        attributes from DECL_ATTRIBUTES (decl) without affecting
        DECL_ATTRIBUTES (current_function_decl).
        * omp-simd-clone.c (expand_simd_clones): Ignore DECL_ARTIFICIAL
        functions with non-NULL DECL_ABSTRACT_ORIGIN.

2018-01-24  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83979
        * fold-const.c (fold_comparison): Use constant_boolean_node
        instead of boolean_{true,false}_node.

2018-01-24  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-profile.c (ipa_propagate_frequency_1): Fix logic skipping calls
        with zero counts.

2018-01-24  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (*call_indirect_nonlocal_sysv<mode>):
        Simplify the clause that sets the length attribute.
        (*call_value_indirect_nonlocal_sysv<mode>): Likewise.
        (*sibcall_nonlocal_sysv<mode>): Clean up code block; simplify the
        clause that sets the length attribute.
        (*sibcall_value_nonlocal_sysv<mode>): Likewise.

2018-01-24  Tom de Vries  <tom@codesourcery.com>

        PR target/83589
        * config/nvptx/nvptx.c (WORKAROUND_PTXJIT_BUG_2): Define to 1.
        (nvptx_pc_set, nvptx_condjump_label): New function. Copy from jump.c.
        Add strict parameter.
        (prevent_branch_around_nothing): Insert dummy insn between branch to
        label and label with no ptx insn inbetween.
        * config/nvptx/nvptx.md (define_insn "fake_nop"): New insn.

2018-01-24  Tom de Vries  <tom@codesourcery.com>

        PR target/81352
        * config/nvptx/nvptx.c (nvptx_single): Add exit insn after noreturn call
        for neutered threads in warp.
        * config/nvptx/nvptx.md (define_insn "exit"): New insn.

2018-01-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83176
        * tree-chrec.c (chrec_fold_plus_1): Handle (signed T){(T) .. }
        operands.

2018-01-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/82819
        * graphite-isl-ast-to-gimple.c (binary_op_to_tree): Avoid
        code generating pluses that are no-ops in the target precision.

2018-01-24  Richard Biener  <rguenther@suse.de>

        PR middle-end/84000
        * tree-cfg.c (replace_loop_annotate): Handle annot_expr_parallel_kind.

2018-01-23  Jan Hubicka  <hubicka@ucw.cz>

        * cfgcleanup.c (try_crossjump_to_edge): Use combine_with_count
        to merge probabilities.
        * predict.c (probably_never_executed): Also mark as cold functions
        with global 0 profile and guessed local profile.
        * profile-count.c (profile_probability::combine_with_count): New
        member function.
        * profile-count.h (profile_probability::operator*,
        profile_probability::operator*=, profile_probability::operator/,
        profile_probability::operator/=): Reduce precision to adjusted
        and set value to guessed on contradictory divisions.
        (profile_probability::combine_with_freq): Remove.
        (profile_probability::combine_wiht_count): Declare.
        (profile_count::force_nonzero):: Set to adjusted.
        (profile_count::probability_in):: Set quality to adjusted.
        * tree-ssa-tail-merge.c (replace_block_by): Use
        combine_with_count.

2018-01-23  Andrew Waterman  <andrew@sifive.com>
            Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (riscv_stack_boundary): New.
        (riscv_option_override): Set riscv_stack_boundary.  Handle
        riscv_preferred_stack_boundary_arg.
        * config/riscv/riscv.h (MIN_STACK_BOUNDARY, ABI_STACK_BOUNDARY): New.
        (BIGGEST_ALIGNMENT): Set to STACK_BOUNDARY.
        (STACK_BOUNDARY): Set to riscv_stack_boundary.
        (RISCV_STACK_ALIGN): Use STACK_BOUNDARY.
        * config/riscv/riscv.opt (mpreferred-stack-boundary): New.
        * doc/invoke.tex (RISC-V Options): Add -mpreferred-stack-boundary.

2018-01-23  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83905
        * config/i386/i386.c (ix86_expand_prologue): Use cost reference
        of struct ix86_frame.
        (ix86_expand_epilogue): Likewise.  Add a local variable for
        the reg_save_offset field in struct ix86_frame.

2018-01-23  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/82604
        * tree-loop-distribution.c (enum partition_kind): New enum item
        PKIND_PARTIAL_MEMSET.
        (partition_builtin_p): Support above new enum item.
        (generate_code_for_partition): Ditto.
        (compute_access_range): Differentiate cases that equality can be
        proven at all loops, the innermost loops or no loops.
        (classify_builtin_st, classify_builtin_ldst): Adjust call to above
        function.  Set PKIND_PARTIAL_MEMSET for partition appropriately.
        (finalize_partitions, distribute_loop): Don't fuse partition of
        PKIND_PARTIAL_MEMSET kind when distributing 3-level loop nest.
        (prepare_perfect_loop_nest): Distribute 3-level loop nest only if
        parloop is enabled.

2018-01-23  Martin Liska  <mliska@suse.cz>

        * predict.def (PRED_INDIR_CALL): Set probability to PROB_EVEN in
        order to ignore the predictor.
        (PRED_POLYMORPHIC_CALL): Likewise.
        (PRED_RECURSIVE_CALL): Likewise.

2018-01-23  Martin Liska  <mliska@suse.cz>

        * tree-profile.c (tree_profiling): Print function header to
        aware reader which function we are working on.
        * value-prof.c (gimple_find_values_to_profile): Do not print
        not interesting value histograms.

2018-01-23  Martin Liska  <mliska@suse.cz>

        * profile-count.h (enum profile_quality): Add
        profile_uninitialized as the first value. Do not number values
        as they are zero based.
        (profile_count::verify): Update sanity check.
        (profile_probability::verify): Likewise.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

        * doc/invoke.texi (ffor-scope): Deprecate.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/83510
        * domwalk.c (set_all_edges_as_executable): New function.
        (dom_walker::dom_walker): Convert bool param
        "skip_unreachable_blocks" to enum reachability.  Move setup of
        edge flags to set_all_edges_as_executable and only do it when
        reachability is REACHABLE_BLOCKS.
        * domwalk.h (enum dom_walker::reachability): New enum.
        (dom_walker::dom_walker): Convert bool param
        "skip_unreachable_blocks" to enum reachability.
        (set_all_edges_as_executable): New decl.
        * graphite-scop-detection.c  (gather_bbs::gather_bbs): Convert
        from false for "skip_unreachable_blocks" to ALL_BLOCKS for
        "reachability".
        * tree-ssa-dom.c (dom_opt_dom_walker::dom_opt_dom_walker): Likewise,
        but converting true to REACHABLE_BLOCKS.
        * tree-ssa-sccvn.c (sccvn_dom_walker::sccvn_dom_walker): Likewise.
        * tree-vrp.c
        (check_array_bounds_dom_walker::check_array_bounds_dom_walker):
        Likewise, but converting it to REACHABLE_BLOCKS_PRESERVING_FLAGS.
        (vrp_dom_walker::vrp_dom_walker): Likewise, but converting it to
        REACHABLE_BLOCKS.
        (vrp_prop::vrp_finalize): Call set_all_edges_as_executable
        if check_all_array_refs will be called.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        * tree.c (selftest::test_location_wrappers): Add more test
        coverage.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        * sbitmap.c (selftest::test_set_range): Fix memory leaks.
        (selftest::test_bit_in_range): Likewise.

2018-01-23  Richard Sandiford  <richard.sandiford@linaro.org>

        PR testsuite/83888
        * doc/sourcebuild.texi (vect_float): Say that the selector
        only describes the situation when -funsafe-math-optimizations is on.
        (vect_float_strict): Document.

2018-01-23  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83965
        * tree-vect-patterns.c (vect_reassociating_reduction_p): New function.
        (vect_recog_dot_prod_pattern, vect_recog_sad_pattern): Use it
        instead of checking only for a reduction.
        (vect_recog_widen_sum_pattern): Likewise.

2018-01-23  Jan Hubicka  <hubicka@ucw.cz>

        * predict.c (probably_never_executed): Only use precise profile info.
        (compute_function_frequency): Skip after inlining hack since we now
        have quality checking.

2018-01-23  Jan Hubicka  <hubicka@ucw.cz>

        * profile-count.h (profile_probability::very_unlikely,
        profile_probability::unlikely, profile_probability::even): Set
        precision to guessed.

2018-01-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83963
        * graphite-scop-detection.c (scop_detection::harmful_loop_in_region):
        Properly terminate dominator walk when crossing the exit edge not
        when visiting its source block.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83918
        * tree.c (maybe_wrap_with_location): Use NON_LVALUE_EXPR rather than
        VIEW_CONVERT_EXPR to wrap CONST_DECLs.

2018-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/83957
        * omp-expand.c (expand_omp_for_generic): Ignore virtual PHIs.  Remove
        semicolon after for body surrounded by braces.

        PR tree-optimization/83081
        * profile-count.h (profile_probability::split): New method.
        * dojump.c (do_jump_1) <case TRUTH_ANDIF_EXPR, case TRUTH_ORIF_EXPR>:
        Use profile_probability::split.
        (do_compare_rtx_and_jump): Fix adjustment of probabilities
        when splitting a single conditional jump into 2.

2018-01-22  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/69452
        * tree-ssa-loop-im.c (class move_computations_dom_walker): Remove
        decl.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78-expand.md (bswaphi2): New define_expand.
        * config/rl78/rl78-virt.md (*bswaphi2_virt): New define_insn.
        * config/rl78/rl78-real.md (*bswaphi2_real): New define_insn.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78-protos.h (rl78_split_movdi): New function
        declaration.
        * config/rl78/rl78.md (movdi): New define_expand.
        * config/rl78/rl78.c (rl78_split_movdi): New function.

2018-01-22  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/83862
        * config/rs6000/rs6000-protos.h (rs6000_split_signbit): Delete,
        no longer used.
        * config/rs6000/rs6000.c (rs6000_split_signbit): Likewise.
        * config/rs6000/rs6000.md (signbit<mode>2): Change code for IEEE
        128-bit to produce an UNSPEC move to get the double word with the
        signbit and then a shift directly to do signbit.
        (signbit<mode>2_dm): Replace old IEEE 128-bit signbit
        implementation with a new version that just does either a direct
        move or a regular move.  Move memory interface to separate insns.
        Move insns so they are next to the expander.
        (signbit<mode>2_dm_mem_be): New combiner insns to combine load
        with signbit move.  Split big and little endian case.
        (signbit<mode>2_dm_mem_le): Likewise.
        (signbit<mode>2_dm_<su>ext): Delete, no longer used.
        (signbit<mode>2_dm2): Likewise.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (anddi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (umindi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (smindi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (smaxdi3): New define_expand.

2018-01-22  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def (ST_ELEMREV_V1TI, LD_ELEMREV_V1TI,
        LVX_V1TI): Add macro expansion.
        * config/rs6000/rs6000-c.c (altivec_builtin_types): Add argument
        definitions for VSX_BUILTIN_VEC_XST_BE, VSX_BUILTIN_VEC_ST,
        VSX_BUILTIN_VEC_XL, LD_ELEMREV_V1TI builtins.
        * config/rs6000/rs6000-p8swap.c (insn_is_swappable_p);
        Change check to determine if the instruction is a byte reversing
        entry.  Fix typo in comment.
        * config/rs6000/rs6000.c (altivec_expand_builtin): Add case entry
        for VSX_BUILTIN_ST_ELEMREV_V1TI and VSX_BUILTIN_LD_ELEMREV_V1TI.
        Add def_builtin calls for new builtins.
        * config/rs6000/vsx.md (vsx_st_elemrev_v1ti, vsx_ld_elemrev_v1ti):
        Add define_insn expansion.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (umaxdi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.c (rl78_note_reg_set): Fixed dead reg check
        for non-QImode registers.

2018-01-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83963
        * graphite-scop-detection.c (scop_detection::get_sese): Delay
        including the loop exit block.
        (scop_detection::merge_sese): Likewise.
        (scop_detection::add_scop): Do it here instead.

2018-01-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * doc/sourcebuild.texi (arm_softfloat): Document.

2018-01-21  John David Anglin  <danglin@gcc.gnu.org>

        PR gcc/77734
        * config/pa/pa.c (pa_function_ok_for_sibcall): Use
        targetm.binds_local_p instead of TREE_PUBLIC to check local binding.
        Move TARGET_PORTABLE_RUNTIME check after TARGET_64BIT check.

2018-01-21  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
            David Edelsohn  <dje.gcc@gmail.com>

        PR target/83946
        * config/rs6000/rs6000.md (*call_indirect_nonlocal_sysv<mode>):
        Change "crset eq" to "crset 2".
        (*call_value_indirect_nonlocal_sysv<mode>): Likewise.
        (*call_indirect_aix<mode>_nospec): Likewise.
        (*call_value_indirect_aix<mode>_nospec): Likewise.
        (*call_indirect_elfv2<mode>_nospec): Likewise.
        (*call_value_indirect_elfv2<mode>_nospec): Likewise.
        (*sibcall_nonlocal_sysv<mode>): Change "crset eq" to "crset 2";
        change assembly output from . to $.
        (*sibcall_value_nonlocal_sysv<mode>): Likewise.
        (indirect_jump<mode>_nospec): Change assembly output from . to $.
        (*tablejump<mode>_internal1_nospec): Likewise.

2018-01-21  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/80870
        * config/sh/sh_optimize_sett_clrt.cc:
        Use INCLUDE_ALGORITHM and INCLUDE_VECTOR instead of direct includes.

2018-01-20  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83940
        * tree-vect-stmts.c (vect_truncate_gather_scatter_offset): Set
        offset_dt to vect_constant_def rather than vect_unknown_def_type.
        (vect_check_load_store_mask): Add a mask_dt_out parameter and
        use it to pass back the definition type.
        (vect_check_store_rhs): Likewise rhs_dt_out.
        (vect_build_gather_load_calls): Add a mask_dt argument and use
        it instead of a call to vect_is_simple_use.
        (vectorizable_store): Update calls to vect_check_load_store_mask
        and vect_check_store_rhs.  Use the dt returned by the latter instead
        of scatter_src_dt.  Use the cached mask_dt and gs_info.offset_dt
        instead of calls to vect_is_simple_use.  Pass the scalar rather
        than the vector operand to vect_is_simple_use when handling
        second and subsequent copies of an rhs value.
        (vectorizable_load): Update calls to vect_check_load_store_mask
        and vect_build_gather_load_calls.  Use the cached mask_dt and
        gs_info.offset_dt instead of calls to vect_is_simple_use.

2018-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83945
        * tree-emutls.c: Include gimplify.h.
        (lower_emutls_2): New function.
        (lower_emutls_1): If ADDR_EXPR is a gimple invariant and walk_tree
        with lower_emutls_2 callback finds some TLS decl in it, unshare_expr
        it before further processing.

        PR target/83930
        * simplify-rtx.c (simplify_binary_operation_1) <case UMOD>: Use
        UINTVAL (trueop1) instead of INTVAL (op1).

2018-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR debug/81570
        PR debug/83728
        * dwarf2cfi.c (DEFAULT_INCOMING_FRAME_SP_OFFSET): Define to
        INCOMING_FRAME_SP_OFFSET if not defined.
        (scan_trace): Add ENTRY argument.  If true and
        DEFAULT_INCOMING_FRAME_SP_OFFSET != INCOMING_FRAME_SP_OFFSET,
        emit a note to adjust the CFA offset.
        (create_cfi_notes): Adjust scan_trace callers.
        (create_cie_data): Use DEFAULT_INCOMING_FRAME_SP_OFFSET rather than
        INCOMING_FRAME_SP_OFFSET in the CIE.
        * config/i386/i386.h (DEFAULT_INCOMING_FRAME_SP_OFFSET): Define.
        * config/stormy16/stormy16.h (DEFAULT_INCOMING_FRAME_SP_OFFSET):
        Likewise.
        * doc/tm.texi.in (DEFAULT_INCOMING_FRAME_SP_OFFSET): Document.
        * doc/tm.texi: Regenerated.

2018-01-19  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        PR rtl-optimization/83147
        * lra-constraints.c (remove_inheritance_pseudos): Use
        lra_substitute_pseudo_within_insn.

2018-01-19  Tom de Vries  <tom@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        PR target/83920
        * config/nvptx/nvptx.c (nvptx_single): Fix jit workaround.

2018-01-19  Cesar Philippidis  <cesar@codesourcery.com>

        PR target/83790
        * config/nvptx/nvptx.c (output_init_frag): Don't use generic address
        spaces for function labels.

2018-01-19  Martin Liska  <mliska@suse.cz>

        * predict.def (PRED_LOOP_EXIT): Change from 85 to 89.
        (PRED_LOOP_EXIT_WITH_RECURSION): Change from 72 to 78.
        (PRED_LOOP_EXTRA_EXIT): Change from 83 to 67.
        (PRED_OPCODE_POSITIVE): Change from 64 to 59.
        (PRED_TREE_OPCODE_POSITIVE): Change from 64 to 59.
        (PRED_CONST_RETURN): Change from 69 to 65.
        (PRED_NULL_RETURN): Change from 91 to 71.
        (PRED_LOOP_IV_COMPARE_GUESS): Change from 98 to 64.
        (PRED_LOOP_GUARD): Change from 66 to 73.

2018-01-19  Martin Liska  <mliska@suse.cz>

        * predict.c (predict_insn_def): Add new assert.
        (struct branch_predictor): Change type to signed integer.
        (test_prediction_value_range): Amend test to cover
        PROB_UNINITIALIZED.
        * predict.def (PRED_LOOP_ITERATIONS): Use the new constant.
        (PRED_LOOP_ITERATIONS_GUESSED): Likewise.
        (PRED_LOOP_ITERATIONS_MAX): Likewise.
        (PRED_LOOP_IV_COMPARE): Likewise.
        * predict.h (PROB_UNINITIALIZED): Define new constant.

2018-01-19  Martin Liska  <mliska@suse.cz>

        * predict.c (dump_prediction): Add new format for
        analyze_brprob.py script which is enabled with -details
        suboption.
        * profile-count.h (precise_p): New function.

2018-01-19  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83922
        * tree-vect-loop.c (vect_verify_full_masking): Return false if
        there are no statements that need masking.
        (vect_active_double_reduction_p): New function.
        (vect_analyze_loop_operations): Use it when handling phis that
        are not in the loop header.

2018-01-19  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83914
        * tree-vect-loop.c (vectorizable_induction): Don't convert
        init_expr or apply the peeling adjustment for inductions
        that are nested within the vectorized loop.

2018-01-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/thumb2.md (*thumb2_negsi2_short): Use RSB mnemonic
        instead of NEG.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/81715
        PR testsuite/83882
        * function.h (gimplify_parameters): Add gimple_seq * argument.
        * function.c: Include gimple.h and options.h.
        (gimplify_parameters): Add cleanup argument, add CLOBBER stmts
        for the added local temporaries if needed.
        * gimplify.c (gimplify_body): Adjust gimplify_parameters caller,
        if there are any parameter cleanups, wrap whole body into a
        try/finally with the cleanups.

2018-01-18  Wilco Dijkstra  <wdijkstr@arm.com>

        PR target/82964
        * config/aarch64/aarch64.c (aarch64_legitimate_constant_p):
        Use GET_MODE_CLASS for scalar floating point.

2018-01-18  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/82256
        patch by PaX Team
        * cgraphclones.c (cgraph_node::create_version_clone_with_body):
        Fix call of call_cgraph_insertion_hooks.

2018-01-18  Martin Sebor  <msebor@redhat.com>

        * doc/invoke.texi (-Wclass-memaccess): Tweak text.

2018-01-18  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/83619
        * cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Update edge
        frequencies.

2018-01-18  Boris Kolpackov  <boris@codesynthesis.com>

        PR other/70268
        * common.opt: (-ffile-prefix-map): New option.
        * opts.c (common_handle_option): Defer it.
        * opts-global.c (handle_common_deferred_options): Handle it.
        * debug.h (remap_debug_filename, add_debug_prefix_map): Move to...
        * file-prefix-map.h: New file.
        (remap_debug_filename, add_debug_prefix_map): ...here.
        (add_macro_prefix_map, add_file_prefix_map, remap_macro_filename): New.
        * final.c (debug_prefix_map, add_debug_prefix_map
        remap_debug_filename): Move to...
        * file-prefix-map.c: New file.
        (file_prefix_map, add_prefix_map, remap_filename) ...here and rename,
        generalize, get rid of alloca(), use strrchr() instead of strchr().
        (add_macro_prefix_map, add_debug_prefix_map, add_file_prefix_map):
        Implement in terms of add_prefix_map().
        (remap_macro_filename, remap_debug_filename): Implement in term of
        remap_filename().
        * Makefile.in (OBJS, PLUGIN_HEADERS): Add new files.
        * builtins.c (fold_builtin_FILE): Call remap_macro_filename().
        * dbxout.c: Include file-prefix-map.h.
        * varasm.c: Likewise.
        * vmsdbgout.c: Likewise.
        * xcoffout.c: Likewise.
        * dwarf2out.c: Likewise plus omit new options from DW_AT_producer.
        * doc/cppopts.texi (-fmacro-prefix-map): Document.
        * doc/invoke.texi (-ffile-prefix-map): Document.
        (-fdebug-prefix-map): Update description.

2018-01-18  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.c (indirect_thunk_name): Document that also
        lfence is emitted.
        (output_indirect_thunk): Document why both instructions
        (pause and lfence) are generated.

2018-01-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83887
        * graphite-scop-detection.c
        (scop_detection::get_nearest_dom_with_single_entry): Remove.
        (scop_detection::get_nearest_pdom_with_single_exit): Likewise.
        (scop_detection::merge_sese): Re-implement with a flood-fill
        algorithm that properly finds a SESE region if it exists.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR c/61240
        * match.pd ((P + A) - P, P - (P + A), (P + A) - (P + B)): For
        pointer_diff optimizations use view_convert instead of convert.

2018-01-17  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (*call_indirect_nonlocal_sysv<mode>):
        Generate different code for -mno-speculate-indirect-jumps.
        (*call_value_indirect_nonlocal_sysv<mode>): Likewise.
        (*call_indirect_aix<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*call_indirect_aix<mode>_nospec): New define_insn.
        (*call_value_indirect_aix<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*call_value_indirect_aix<mode>_nospec): New define_insn.
        (*sibcall_nonlocal_sysv<mode>): Generate different code for
        -mno-speculate-indirect-jumps.
        (*sibcall_value_nonlocal_sysv<mode>): Likewise.

2018-01-17  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_emit_move): If we load or store a
        long double type, set the flags for noting the default long double
        type, even if we don't pass or return a long double type.

2018-01-17  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/83051
        * ipa-inline.c (flatten_function): Do not overwrite final inlining
        failure.

2018-01-17  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_gimple_builtin): Add gimple folding
        support for merge[hl].
        (fold_mergehl_helper): New helper function.
        (tree-vector-builder.h): New #include for tree_vector_builder usage.
        * config/rs6000/altivec.md (altivec_vmrghw_direct): Add xxmrghw insn.
        (altivec_vmrglw_direct): Add xxmrglw insn.

2018-01-17  Andrew Waterman  <andrew@sifive.com>

        * config/riscv/riscv.c (riscv_conditional_register_usage): If
        UNITS_PER_FP_ARG is 0, set call_used_regs to 1 for all FP regs.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR lto/83121
        * ipa-devirt.c (add_type_duplicate): When comparing memory layout,
        call the lto_location_cache before reading the
        DECL_SOURCE_LOCATION of the types.

2018-01-17  Wilco Dijkstra  <wdijkstr@arm.com>
            Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.md (movti_aarch64): Use Uti constraint.
        * config/aarch64/aarch64.c (aarch64_mov128_immediate): New function.
        (aarch64_legitimate_constant_p): Just support CONST_DOUBLE
        SF/DF/TF mode to avoid creating illegal CONST_WIDE_INT immediates.
        * config/aarch64/aarch64-protos.h (aarch64_mov128_immediate):
        Add declaration.
        * config/aarch64/constraints.md (aarch64_movti_operand):
        Limit immediates.
        * config/aarch64/predicates.md (Uti): Add new constraint.

2018-01-17  Carl Love  <cel@us.ibm.com>

        * config/rs6000/vsx.md (define_expand xl_len_r,
        define_expand stxvl, define_expand *stxvl): Add match_dup argument.
        (define_insn): Add, match_dup 1 argument to define_insn stxvll and
        lxvll.
        (define_expand, define_insn): Move the shift left from  the
        define_insn to the define_expand for lxvl and stxvl instructions.
        * config/rs6000/rs6000-builtin.def (BU_P9V_64BIT_VSX_2): Change LXVL
        and XL_LEN_R definitions to PURE.

2018-01-17  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (indirect_thunk_name): Declare regno
        as unsigned int.  Compare regno with INVALID_REGNUM.
        (output_indirect_thunk): Ditto.
        (output_indirect_thunk_function): Ditto.
        (ix86_code_end): Declare regno as unsigned int.  Use INVALID_REGNUM
        in the call to output_indirect_thunk_function.

2018-01-17  Richard Sandiford  <richard.sandiford@linaro.org>

        PR middle-end/83884
        * expr.c (expand_expr_real_1): Use the size of GET_MODE (op0)
        rather than the size of inner_type to determine the stack slot size
        when handling VIEW_CONVERT_EXPRs on strict-alignment targets.

2018-01-16  Sebastian Peryt  <sebastian.peryt@intel.com>

        PR target/83546
        * config/i386/i386.c (ix86_option_override_internal): Add PTA_RDRND
        to PTA_SILVERMONT.

2018-01-16  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config.gcc (powerpc*-linux*-*): Add support for 64-bit little
        endian Linux systems to optionally enable multilibs for selecting
        the long double type if the user configured an explicit type.
        * config/rs6000/rs6000.h (TARGET_IEEEQUAD_MULTILIB): Indicate we
        have no long double multilibs if not defined.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Do not
        warn if the user used -mabi={ieee,ibm}longdouble and we built
        multilibs for long double.
        * config/rs6000/linux64.h (MULTILIB_DEFAULTS_IEEE): Define as the
        appropriate multilib option.
        (MULTILIB_DEFAULTS): Add MULTILIB_DEFAULTS_IEEE to the default
        multilib options.
        * config/rs6000/t-ldouble-linux64le-ibm: New configuration files
        for building long double multilibs.
        * config/rs6000/t-ldouble-linux64le-ieee: Likewise.

2018-01-16  John David Anglin  <danglin@gcc.gnu.org>

        * config.gcc (hppa*-*-linux*): Change callee copies ABI to caller
        copies.

        * config/pa.h (MALLOC_ABI_ALIGNMENT): Set 32-bit alignment default to
        64 bits.
        * config/pa/pa32-linux.h (MALLOC_ABI_ALIGNMENT): Set alignment to
        128 bits.

        * config/pa/som.h (ASM_DECLARE_FUNCTION_NAME): Cleanup type and mode
        variables.

        * config/pa/pa.c (pa_function_arg_size): Apply CEIL to GET_MODE_SIZE
        return value.

2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): For an
        ADDR_EXPR, do not count the offset of a COMPONENT_REF twice.

2018-01-16  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-p8swap.c (rs6000_gen_stvx): Generate
        different rtl trees depending on TARGET_64BIT.
        (rs6000_gen_lvx): Likewise.

2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>

        * config/visium/visium.md (nop): Tweak comment.
        (hazard_nop): Likewise.

2018-01-16  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_opt_vars): Add entry for
        -mspeculate-indirect-jumps.
        * config/rs6000/rs6000.md (*call_indirect_elfv2<mode>): Disable
        for -mno-speculate-indirect-jumps.
        (*call_indirect_elfv2<mode>_nospec): New define_insn.
        (*call_value_indirect_elfv2<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*call_value_indirect_elfv2<mode>_nospec): New define_insn.
        (indirect_jump): Emit different RTL for
        -mno-speculate-indirect-jumps.
        (*indirect_jump<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*indirect_jump<mode>_nospec): New define_insn.
        (tablejump): Emit different RTL for
        -mno-speculate-indirect-jumps.
        (tablejumpsi): Disable for -mno-speculate-indirect-jumps.
        (tablejumpsi_nospec): New define_expand.
        (tablejumpdi): Disable for -mno-speculate-indirect-jumps.
        (tablejumpdi_nospec): New define_expand.
        (*tablejump<mode>_internal1): Disable for
        -mno-speculate-indirect-jumps.
        (*tablejump<mode>_internal1_nospec): New define_insn.
        * config/rs6000/rs6000.opt (mspeculate-indirect-jumps): New
        option.

2018-01-16  Artyom Skrobov tyomitch@gmail.com

        * caller-save.c (insert_save): Drop unnecessary parameter.  All
        callers updated.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>
            Richard Biener  <rguenth@suse.de>

        PR libgomp/83590
        * gimplify.c (gimplify_one_sizepos): For is_gimple_constant (expr)
        return early, inline manually is_gimple_sizepos.  Make sure if we
        call gimplify_expr we don't end up with a gimple constant.
        * tree.c (variably_modified_type_p): Don't return true for
        is_gimple_constant (_t).  Inline manually is_gimple_sizepos.
        * gimplify.h (is_gimple_sizepos): Remove.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83857
        * tree-vect-loop.c (vect_analyze_loop_operations): Don't call
        vectorizable_live_operation for pure SLP statements.
        (vectorizable_live_operation): Handle PHIs.

2018-01-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83867
        * tree-vect-stmts.c (vect_transform_stmt): Precompute
        nested_in_vect_loop_p since the scalar stmt may get invalidated.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR c/83844
        * stor-layout.c (handle_warn_if_not_align): Use byte_position and
        multiple_of_p instead of unchecked tree_to_uhwi and UHWI check.
        If off is not INTEGER_CST, issue a may not be aligned warning
        rather than isn't aligned.  Use isn%'t rather than isn't.
        * fold-const.c (multiple_of_p) <case BIT_AND_EXPR>: Don't fall through
        into MULT_EXPR.
        <case MULT_EXPR>: Improve the case when bottom and one of the
        MULT_EXPR operands are INTEGER_CSTs and bottom is multiple of that
        operand, in that case check if the other operand is multiple of
        bottom divided by the INTEGER_CST operand.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        PR target/83858
        * config/pa/pa.h (FUNCTION_ARG_SIZE): Delete.
        * config/pa/pa-protos.h (pa_function_arg_size): Declare.
        * config/pa/som.h (ASM_DECLARE_FUNCTION_NAME): Use
        pa_function_arg_size instead of FUNCTION_ARG_SIZE.
        * config/pa/pa.c (pa_function_arg_advance): Likewise.
        (pa_function_arg, pa_arg_partial_bytes): Likewise.
        (pa_function_arg_size): New function.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        * fold-const.c (fold_ternary_loc): Construct the vec_perm_indices
        in a separate statement.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83847
        * tree-vect-data-refs.c (vect_analyze_data_ref_accesses): Don't
        group gathers and scatters.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/86620
        * params.def (max-sched-ready-insns): Bump minimum value to 1.

        PR rtl-optimization/83213
        * recog.c (peep2_attempt): Copy over CROSSING_JUMP_P from peepinsn
        to last if both are JUMP_INSNs.

        PR tree-optimization/83843
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::output_merged_store): Handle bit_not_p on
        store_immediate_info for bswap/nop orig_stores.

2018-01-15  Andrew Waterman  <andrew@sifive.com>

        * config/riscv/riscv.c (riscv_rtx_costs) <MULT>: Increase cost if
        !TARGET_MUL.
        <UDIV>: Increase cost if !TARGET_DIV.

2018-01-15  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (define_attr "type"): Remove delayed_cr.
        (define_attr "cr_logical_3op"): New.
        (cceq_ior_compare): Adjust.
        (cceq_ior_compare_complement): Adjust.
        (*cceq_rev_compare): Adjust.
        * config/rs6000/rs6000.c (rs6000_adjust_cost): Adjust.
        (is_cracked_insn): Adjust.
        (insn_must_be_first_in_group): Adjust.
        * config/rs6000/40x.md: Adjust.
        * config/rs6000/440.md: Adjust.
        * config/rs6000/476.md: Adjust.
        * config/rs6000/601.md: Adjust.
        * config/rs6000/603.md: Adjust.
        * config/rs6000/6xx.md: Adjust.
        * config/rs6000/7450.md: Adjust.
        * config/rs6000/7xx.md: Adjust.
        * config/rs6000/8540.md: Adjust.
        * config/rs6000/cell.md: Adjust.
        * config/rs6000/e300c2c3.md: Adjust.
        * config/rs6000/e500mc.md: Adjust.
        * config/rs6000/e500mc64.md: Adjust.
        * config/rs6000/e5500.md: Adjust.
        * config/rs6000/e6500.md: Adjust.
        * config/rs6000/mpc.md: Adjust.
        * config/rs6000/power4.md: Adjust.
        * config/rs6000/power5.md: Adjust.
        * config/rs6000/power6.md: Adjust.
        * config/rs6000/power7.md: Adjust.
        * config/rs6000/power8.md: Adjust.
        * config/rs6000/power9.md: Adjust.
        * config/rs6000/rs64.md: Adjust.
        * config/rs6000/titan.md: Adjust.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/predicates.md (indirect_branch_operand): Rewrite
        ix86_indirect_branch_register logic.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/constraints.md (Bs): Update
        ix86_indirect_branch_register check.  Don't check
        ix86_indirect_branch_register with GOT_memory_operand.
        (Bw): Likewise.
        * config/i386/predicates.md (GOT_memory_operand): Don't check
        ix86_indirect_branch_register here.
        (GOT32_symbol_operand): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/predicates.md (constant_call_address_operand):
        Rewrite ix86_indirect_branch_register logic.
        (sibcall_insn_operand): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/constraints.md (Bs): Replace
        ix86_indirect_branch_thunk_register with
        ix86_indirect_branch_register.
        (Bw): Likewise.
        * config/i386/i386.md (indirect_jump): Likewise.
        (tablejump): Likewise.
        (*sibcall_memory): Likewise.
        (*sibcall_value_memory): Likewise.
        Peepholes of indirect call and jump via memory: Likewise.
        * config/i386/i386.opt: Likewise.
        * config/i386/predicates.md (indirect_branch_operand): Likewise.
        (GOT_memory_operand): Likewise.
        (call_insn_operand): Likewise.
        (sibcall_insn_operand): Likewise.
        (GOT32_symbol_operand): Likewise.

2018-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83837
        * omp-expand.c (expand_omp_atomic_pipeline): Use loaded_val
        type rather than type addr's type points to.
        (expand_omp_atomic_mutex): Likewise.
        (expand_omp_atomic): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83839
        * config/i386/i386.c (output_indirect_thunk_function): Use
        ASM_OUTPUT_LABEL, instead of ASM_OUTPUT_DEF, for TARGET_MACHO
        for  __x86_return_thunk.

2018-01-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/83850
        * expmed.c (extract_bit_field_1): Fix typo.

2018-01-15  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/83687
        * config/arm/iterators.md (VF): New mode iterator.
        * config/arm/neon.md (neon_vabd<mode>_2): Use the above.
        Remove integer-related logic from pattern.
        (neon_vabd<mode>_3): Likewise.

2018-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/82694
        * common.opt (fstrict-overflow): No longer an alias.
        (fwrapv-pointer): New option.
        * tree.h (TYPE_OVERFLOW_WRAPS, TYPE_OVERFLOW_UNDEFINED): Define
        also for pointer types based on flag_wrapv_pointer.
        * opts.c (common_handle_option) <case OPT_fstrict_overflow>: Set
        opts->x_flag_wrap[pv] to !value, clear opts->x_flag_trapv if
        opts->x_flag_wrapv got set.
        * fold-const.c (fold_comparison, fold_binary_loc): Revert 2017-08-01
        changes, just use TYPE_OVERFLOW_UNDEFINED on pointer type instead of
        POINTER_TYPE_OVERFLOW_UNDEFINED.
        * match.pd: Likewise in address comparison pattern.
        * doc/invoke.texi: Document -fwrapv and -fstrict-overflow.

2018-01-15  Richard Biener  <rguenther@suse.de>

        PR lto/83804
        * tree.c (free_lang_data_in_type): Always unlink TYPE_DECLs
        from TYPE_FIELDS.  Free TYPE_BINFO if not used by devirtualization.
        Reset type names to their identifier if their TYPE_DECL doesn't
        have linkage (and thus is used for ODR and devirt).
        (save_debug_info_for_decl): Remove.
        (save_debug_info_for_type): Likewise.
        (add_tree_to_fld_list): Adjust.
        * tree-pretty-print.c (dump_generic_node): Make dumping of
        type names more robust.

2018-01-15  Richard Biener  <rguenther@suse.de>

        * BASE-VER: Bump to 8.0.1.

2018-01-14  Martin Sebor  <msebor@redhat.com>

        PR other/83508
        * builtins.c (check_access): Avoid warning when the no-warning bit
        is set.

2018-01-14  Cory Fields  <cory-nospam-@coryfields.com>

        * tree-ssa-loop-im.c (sort_bbs_in_loop_postorder_cmp): Stabilize sort.
        * ira-color (allocno_hard_regs_compare): Likewise.

2018-01-14  Nathan Rossi  <nathan@nathanrossi.com>

        PR target/83013
        * config/microblaze/microblaze.c (microblaze_asm_output_ident):
        Use .pushsection/.popsection.

2018-01-14  Martin Sebor  <msebor@redhat.com>

        PR c++/81327
        * doc/invoke.texi (-Wlass-memaccess): Document suppression by casting.

2018-01-14  Jakub Jelinek  <jakub@redhat.com>

        * config.gcc (i[34567]86-*-*): Remove one duplicate gfniintrin.h
        entry from extra_headers.
        (x86_64-*-*): Remove two duplicate gfniintrin.h entries from
        extra_headers, make the list bitwise identical to the i?86-*-* one.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (ix86_set_indirect_branch_type): Disallow
        -mcmodel=large with -mindirect-branch=thunk,
        -mindirect-branch=thunk-extern, -mfunction-return=thunk and
        -mfunction-return=thunk-extern.
        * doc/invoke.texi: Document -mcmodel=large is incompatible with
        -mindirect-branch=thunk, -mindirect-branch=thunk-extern,
        -mfunction-return=thunk and -mfunction-return=thunk-extern.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (print_reg): Print the name of the full
        integer register without '%'.
        (ix86_print_operand): Handle 'V'.
        * doc/extend.texi: Document 'V' modifier.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/constraints.md (Bs): Disallow memory operand for
        -mindirect-branch-register.
        (Bw): Likewise.
        * config/i386/predicates.md (indirect_branch_operand): Likewise.
        (GOT_memory_operand): Likewise.
        (call_insn_operand): Likewise.
        (sibcall_insn_operand): Likewise.
        (GOT32_symbol_operand): Likewise.
        * config/i386/i386.md (indirect_jump): Call convert_memory_address
        for -mindirect-branch-register.
        (tablejump): Likewise.
        (*sibcall_memory): Likewise.
        (*sibcall_value_memory): Likewise.
        Disallow peepholes of indirect call and jump via memory for
        -mindirect-branch-register.
        (*call_pop): Replace m with Bw.
        (*call_value_pop): Likewise.
        (*sibcall_pop_memory): Replace m with Bs.
        * config/i386/i386.opt (mindirect-branch-register): New option.
        * doc/invoke.texi: Document -mindirect-branch-register option.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386-protos.h (ix86_output_function_return): New.
        * config/i386/i386.c (ix86_set_indirect_branch_type): Also
        set function_return_type.
        (indirect_thunk_name): Add ret_p to indicate thunk for function
        return.
        (output_indirect_thunk_function): Pass false to
        indirect_thunk_name.
        (ix86_output_indirect_branch_via_reg): Likewise.
        (ix86_output_indirect_branch_via_push): Likewise.
        (output_indirect_thunk_function): Create alias for function
        return thunk if regno < 0.
        (ix86_output_function_return): New function.
        (ix86_handle_fndecl_attribute): Handle function_return.
        (ix86_attribute_table): Add function_return.
        * config/i386/i386.h (machine_function): Add
        function_return_type.
        * config/i386/i386.md (simple_return_internal): Use
        ix86_output_function_return.
        (simple_return_internal_long): Likewise.
        * config/i386/i386.opt (mfunction-return=): New option.
        (indirect_branch): Mention -mfunction-return=.
        * doc/extend.texi: Document function_return function attribute.
        * doc/invoke.texi: Document -mfunction-return= option.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386-opts.h (indirect_branch): New.
        * config/i386/i386-protos.h (ix86_output_indirect_jmp): Likewise.
        * config/i386/i386.c (ix86_using_red_zone): Disallow red-zone
        with local indirect jump when converting indirect call and jump.
        (ix86_set_indirect_branch_type): New.
        (ix86_set_current_function): Call ix86_set_indirect_branch_type.
        (indirectlabelno): New.
        (indirect_thunk_needed): Likewise.
        (indirect_thunk_bnd_needed): Likewise.
        (indirect_thunks_used): Likewise.
        (indirect_thunks_bnd_used): Likewise.
        (INDIRECT_LABEL): Likewise.
        (indirect_thunk_name): Likewise.
        (output_indirect_thunk): Likewise.
        (output_indirect_thunk_function): Likewise.
        (ix86_output_indirect_branch_via_reg): Likewise.
        (ix86_output_indirect_branch_via_push): Likewise.
        (ix86_output_indirect_branch): Likewise.
        (ix86_output_indirect_jmp): Likewise.
        (ix86_code_end): Call output_indirect_thunk_function if needed.
        (ix86_output_call_insn): Call ix86_output_indirect_branch if
        needed.
        (ix86_handle_fndecl_attribute): Handle indirect_branch.
        (ix86_attribute_table): Add indirect_branch.
        * config/i386/i386.h (machine_function): Add indirect_branch_type
        and has_local_indirect_jump.
        * config/i386/i386.md (indirect_jump): Set has_local_indirect_jump
        to true.
        (tablejump): Likewise.
        (*indirect_jump): Use ix86_output_indirect_jmp.
        (*tablejump_1): Likewise.
        (simple_return_indirect_internal): Likewise.
        * config/i386/i386.opt (mindirect-branch=): New option.
        (indirect_branch): New.
        (keep): Likewise.
        (thunk): Likewise.
        (thunk-inline): Likewise.
        (thunk-extern): Likewise.
        * doc/extend.texi: Document indirect_branch function attribute.
        * doc/invoke.texi: Document -mindirect-branch= option.

2018-01-14  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/83051
        * ipa-inline.c (edge_badness): Tolerate roundoff errors.

2018-01-14  Richard Sandiford  <richard.sandiford@linaro.org>

        * ipa-inline.c (want_inline_small_function_p): Return false if
        inlining has already failed with CIF_FINAL_ERROR.
        (update_caller_keys): Call want_inline_small_function_p before
        can_inline_edge_p.
        (update_callee_keys): Likewise.

2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-p8swap.c (rs6000_sum_of_two_registers_p):
        New function.
        (rs6000_quadword_masked_address_p): Likewise.
        (quad_aligned_load_p): Likewise.
        (quad_aligned_store_p): Likewise.
        (const_load_sequence_p): Add comment to describe the outer-most loop.
        (mimic_memory_attributes_and_flags): New function.
        (rs6000_gen_stvx): Likewise.
        (replace_swapped_aligned_store): Likewise.
        (rs6000_gen_lvx): Likewise.
        (replace_swapped_aligned_load): Likewise.
        (replace_swapped_load_constant): Capitalize argument name in
        comment describing this function.
        (rs6000_analyze_swaps): Add a third pass to search for vector loads
        and stores that access quad-word aligned addresses and replace
        with stvx or lvx instructions when appropriate.
        * config/rs6000/rs6000-protos.h (rs6000_sum_of_two_registers_p):
        New function prototype.
        (rs6000_quadword_masked_address_p): Likewise.
        (rs6000_gen_lvx): Likewise.
        (rs6000_gen_stvx): Likewise.
        * config/rs6000/vsx.md (*vsx_le_perm_load_<mode>): For modes
        VSX_D (V2DF, V2DI), modify this split to select lvx instruction
        when memory address is aligned.
        (*vsx_le_perm_load_<mode>): For modes VSX_W (V4SF, V4SI), modify
        this split to select lvx instruction when memory address is aligned.
        (*vsx_le_perm_load_v8hi): Modify this split to select lvx
        instruction when memory address is aligned.
        (*vsx_le_perm_load_v16qi): Likewise.
        (four unnamed splitters): Modify to select the stvx instruction
        when memory is aligned.

2018-01-13  Jan Hubicka  <hubicka@ucw.cz>

        * predict.c (determine_unlikely_bbs): Handle correctly BBs
        which appears in the queue multiple times.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vec_lower_bound): New structure.
        (_loop_vec_info): Add check_nonzero and lower_bounds.
        (LOOP_VINFO_CHECK_NONZERO): New macro.
        (LOOP_VINFO_LOWER_BOUNDS): Likewise.
        (LOOP_REQUIRES_VERSIONING_FOR_ALIAS): Check lower_bounds too.
        * tree-data-ref.h (dr_with_seg_len): Add access_size and align
        fields.  Make seg_len the distance travelled, not including the
        access size.
        (dr_direction_indicator): Declare.
        (dr_zero_step_indicator): Likewise.
        (dr_known_forward_stride_p): Likewise.
        * tree-data-ref.c: Include stringpool.h, tree-vrp.h and
        tree-ssanames.h.
        (runtime_alias_check_p): Allow runtime alias checks with
        variable strides.
        (operator ==): Compare access_size and align.
        (prune_runtime_alias_test_list): Rework for new distinction between
        the access_size and seg_len.
        (create_intersect_range_checks_index): Likewise.  Cope with polynomial
        segment lengths.
        (get_segment_min_max): New function.
        (create_intersect_range_checks): Use it.
        (dr_step_indicator): New function.
        (dr_direction_indicator): Likewise.
        (dr_zero_step_indicator): Likewise.
        (dr_known_forward_stride_p): Likewise.
        * tree-loop-distribution.c (data_ref_segment_size): Return
        DR_STEP * (niters - 1).
        (compute_alias_check_pairs): Update call to the dr_with_seg_len
        constructor.
        * tree-vect-data-refs.c (vect_check_nonzero_value): New function.
        (vect_preserves_scalar_order_p): New function, split out from...
        (vect_analyze_data_ref_dependence): ...here.  Check for zero steps.
        (vect_vfa_segment_size): Return DR_STEP * (length_factor - 1).
        (vect_vfa_access_size): New function.
        (vect_vfa_align): Likewise.
        (vect_compile_time_alias): Take access_size_a and access_b arguments.
        (dump_lower_bound): New function.
        (vect_check_lower_bound): Likewise.
        (vect_small_gap_p): Likewise.
        (vectorizable_with_step_bound_p): Likewise.
        (vect_prune_runtime_alias_test_list): Ignore cross-iteration
        depencies if the vectorization factor is 1.  Convert the checks
        for nonzero steps into checks on the bounds of DR_STEP.  Try using
        a bunds check for variable steps if the minimum required step is
        relatively small. Update calls to the dr_with_seg_len
        constructor and to vect_compile_time_alias.
        * tree-vect-loop-manip.c (vect_create_cond_for_lower_bounds): New
        function.
        (vect_loop_versioning): Call it.
        * tree-vect-loop.c (vect_analyze_loop_2): Clear LOOP_VINFO_LOWER_BOUNDS
        when retrying.
        (vect_estimate_min_profitable_iters): Account for any bounds checks.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/sourcebuild.texi (vect_scatter_store): Document.
        * optabs.def (scatter_store_optab, mask_scatter_store_optab): New
        optabs.
        * doc/md.texi (scatter_store@var{m}, mask_scatter_store@var{m}):
        Document.
        * genopinit.c (main): Add supports_vec_scatter_store and
        supports_vec_scatter_store_cached to target_optabs.
        * gimple.h (gimple_expr_type): Handle IFN_SCATTER_STORE and
        IFN_MASK_SCATTER_STORE.
        * internal-fn.def (SCATTER_STORE, MASK_SCATTER_STORE): New internal
        functions.
        * internal-fn.h (internal_store_fn_p): Declare.
        (internal_fn_stored_value_index): Likewise.
        * internal-fn.c (scatter_store_direct): New macro.
        (expand_scatter_store_optab_fn): New function.
        (direct_scatter_store_optab_supported_p): New macro.
        (internal_store_fn_p): New function.
        (internal_gather_scatter_fn_p): Handle IFN_SCATTER_STORE and
        IFN_MASK_SCATTER_STORE.
        (internal_fn_mask_index): Likewise.
        (internal_fn_stored_value_index): New function.
        (internal_gather_scatter_fn_supported_p): Adjust operand numbers
        for scatter stores.
        * optabs-query.h (supports_vec_scatter_store_p): Declare.
        * optabs-query.c (supports_vec_scatter_store_p): New function.
        * tree-vectorizer.h (vect_get_store_rhs): Declare.
        * tree-vect-data-refs.c (vect_analyze_data_ref_access): Return
        true for scatter stores.
        (vect_gather_scatter_fn_p): Handle scatter stores too.
        (vect_check_gather_scatter): Consider using scatter stores if
        supports_vec_scatter_store_p.
        * tree-vect-patterns.c (vect_try_gather_scatter_pattern): Handle
        scatter stores too.
        * tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Use
        internal_fn_stored_value_index.
        (check_load_store_masking): Handle scatter stores too.
        (vect_get_store_rhs): Make public.
        (vectorizable_call): Use internal_store_fn_p.
        (vectorizable_store): Handle scatter store internal functions.
        (vect_transform_stmt): Compare GROUP_STORE_COUNT with GROUP_SIZE
        when deciding whether the end of the group has been reached.
        * config/aarch64/aarch64.md (UNSPEC_ST1_SCATTER): New unspec.
        * config/aarch64/aarch64-sve.md (scatter_store<mode>): New expander.
        (mask_scatter_store<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vect_gather_scatter_fn_p): Declare.
        * tree-vect-data-refs.c (vect_gather_scatter_fn_p): Make public.
        * tree-vect-stmts.c (vect_truncate_gather_scatter_offset): New
        function.
        (vect_use_strided_gather_scatters_p): Take a masked_p argument.
        Use vect_truncate_gather_scatter_offset if we can't treat the
        operation as a normal gather load or scatter store.
        (get_group_load_store_type): Take the gather_scatter_info
        as argument.  Try using a gather load or scatter store for
        single-element groups.
        (get_load_store_type): Update calls to get_group_load_store_type
        and vect_use_strided_gather_scatters_p.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vect_create_data_ref_ptr): Take an extra
        optional tree argument.
        * tree-vect-data-refs.c (vect_check_gather_scatter): Check for
        null target hooks.
        (vect_create_data_ref_ptr): Take the iv_step as an optional argument,
        but continue to use the current value as a fallback.
        (bump_vector_ptr): Use operand_equal_p rather than tree_int_cst_compare
        to compare the updates.
        * tree-vect-stmts.c (vect_use_strided_gather_scatters_p): New function.
        (get_load_store_type): Use it when handling a strided access.
        (vect_get_strided_load_store_ops): New function.
        (vect_get_data_ptr_increment): Likewise.
        (vectorizable_load): Handle strided gather loads.  Always pass
        a step to vect_create_data_ref_ptr and bump_vector_ptr.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (gather_load@var{m}): Document.
        (mask_gather_load@var{m}): Likewise.
        * genopinit.c (main): Add supports_vec_gather_load and
        supports_vec_gather_load_cached to target_optabs.
        * optabs-tree.c (init_tree_optimization_optabs): Use
        ggc_cleared_alloc to allocate target_optabs.
        * optabs.def (gather_load_optab, mask_gather_laod_optab): New optabs.
        * internal-fn.def (GATHER_LOAD, MASK_GATHER_LOAD): New internal
        functions.
        * internal-fn.h (internal_load_fn_p): Declare.
        (internal_gather_scatter_fn_p): Likewise.
        (internal_fn_mask_index): Likewise.
        (internal_gather_scatter_fn_supported_p): Likewise.
        * internal-fn.c (gather_load_direct): New macro.
        (expand_gather_load_optab_fn): New function.
        (direct_gather_load_optab_supported_p): New macro.
        (direct_internal_fn_optab): New function.
        (internal_load_fn_p): Likewise.
        (internal_gather_scatter_fn_p): Likewise.
        (internal_fn_mask_index): Likewise.
        (internal_gather_scatter_fn_supported_p): Likewise.
        * optabs-query.c (supports_at_least_one_mode_p): New function.
        (supports_vec_gather_load_p): Likewise.
        * optabs-query.h (supports_vec_gather_load_p): Declare.
        * tree-vectorizer.h (gather_scatter_info): Add ifn, element_type
        and memory_type field.
        (NUM_PATTERNS): Bump to 15.
        * tree-vect-data-refs.c: Include internal-fn.h.
        (vect_gather_scatter_fn_p): New function.
        (vect_describe_gather_scatter_call): Likewise.
        (vect_check_gather_scatter): Try using internal functions for
        gather loads.  Recognize existing calls to a gather load function.
        (vect_analyze_data_refs): Consider using gather loads if
        supports_vec_gather_load_p.
        * tree-vect-patterns.c (vect_get_load_store_mask): New function.
        (vect_get_gather_scatter_offset_type): Likewise.
        (vect_convert_mask_for_vectype): Likewise.
        (vect_add_conversion_to_patterm): Likewise.
        (vect_try_gather_scatter_pattern): Likewise.
        (vect_recog_gather_scatter_pattern): New pattern recognizer.
        (vect_vect_recog_func_ptrs): Add it.
        * tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Use
        internal_fn_mask_index and internal_gather_scatter_fn_p.
        (check_load_store_masking): Take the gather_scatter_info as an
        argument and handle gather loads.
        (vect_get_gather_scatter_ops): New function.
        (vectorizable_call): Check internal_load_fn_p.
        (vectorizable_load): Likewise.  Handle gather load internal
        functions.
        (vectorizable_store): Update call to check_load_store_masking.
        * config/aarch64/aarch64.md (UNSPEC_LD1_GATHER): New unspec.
        * config/aarch64/iterators.md (SVE_S, SVE_D): New mode iterators.
        * config/aarch64/predicates.md (aarch64_gather_scale_operand_w)
        (aarch64_gather_scale_operand_d): New predicates.
        * config/aarch64/aarch64-sve.md (gather_load<mode>): New expander.
        (mask_gather_load<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * optabs.def (fold_left_plus_optab): New optab.
        * doc/md.texi (fold_left_plus_@var{m}): Document.
        * internal-fn.def (IFN_FOLD_LEFT_PLUS): New internal function.
        * internal-fn.c (fold_left_direct): Define.
        (expand_fold_left_optab_fn): Likewise.
        (direct_fold_left_optab_supported_p): Likewise.
        * fold-const-call.c (fold_const_fold_left): New function.
        (fold_const_call): Use it to fold CFN_FOLD_LEFT_PLUS.
        * tree-parloops.c (valid_reduction_p): New function.
        (gather_scalar_reductions): Use it.
        * tree-vectorizer.h (FOLD_LEFT_REDUCTION): New vect_reduction_type.
        (vect_finish_replace_stmt): Declare.
        * tree-vect-loop.c (fold_left_reduction_fn): New function.
        (needs_fold_left_reduction_p): New function, split out from...
        (vect_is_simple_reduction): ...here.  Accept reductions that
        forbid reassociation, but give them type FOLD_LEFT_REDUCTION.
        (vect_force_simple_reduction): Also store the reduction type in
        the assignment's STMT_VINFO_REDUC_TYPE.
        (vect_model_reduction_cost): Handle FOLD_LEFT_REDUCTION.
        (merge_with_identity): New function.
        (vect_expand_fold_left): Likewise.
        (vectorize_fold_left_reduction): Likewise.
        (vectorizable_reduction): Handle FOLD_LEFT_REDUCTION.  Leave the
        scalar phi in place for it.  Check for target support and reject
        cases that would reassociate the operation.  Defer the transform
        phase to vectorize_fold_left_reduction.
        * config/aarch64/aarch64.md (UNSPEC_FADDA): New unspec.
        * config/aarch64/aarch64-sve.md (fold_left_plus_<mode>): New expander.
        (*fold_left_plus_<mode>, *pred_fold_left_plus_<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-if-conv.c (predicate_mem_writes): Remove redundant
        call to ifc_temp_var.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (legitimize_address_displacement): Take the original
        offset as a poly_int.
        * targhooks.h (default_legitimize_address_displacement): Update
        accordingly.
        * targhooks.c (default_legitimize_address_displacement): Likewise.
        * doc/tm.texi: Regenerate.
        * lra-constraints.c (base_plus_disp_to_reg): Take the displacement
        as an argument, moving assert of ad->disp == ad->disp_term to...
        (process_address_1): ...here.  Update calls to base_plus_disp_to_reg.
        Try calling targetm.legitimize_address_displacement before expanding
        the address rather than afterwards, and adjust for the new interface.
        * config/aarch64/aarch64.c (aarch64_legitimize_address_displacement):
        Match the new hook interface.  Handle SVE addresses.
        * config/sh/sh.c (sh_legitimize_address_displacement): Make the
        new hook interface.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * Makefile.in (OBJS): Add early-remat.o.
        * target.def (select_early_remat_modes): New hook.
        * doc/tm.texi.in (TARGET_SELECT_EARLY_REMAT_MODES): New hook.
        * doc/tm.texi: Regenerate.
        * targhooks.h (default_select_early_remat_modes): Declare.
        * targhooks.c (default_select_early_remat_modes): New function.
        * timevar.def (TV_EARLY_REMAT): New timevar.
        * passes.def (pass_early_remat): New pass.
        * tree-pass.h (make_pass_early_remat): Declare.
        * early-remat.c: New file.
        * config/aarch64/aarch64.c (aarch64_select_early_remat_modes): New
        function.
        (TARGET_SELECT_EARLY_REMAT_MODES): Define.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop-manip.c (vect_gen_scalar_loop_niters): Replace
        vfm1 with a bound_epilog parameter.
        (vect_do_peeling): Update calls accordingly, and move the prologue
        call earlier in the function.  Treat the base bound_epilog as 0 for
        fully-masked loops and retain vf - 1 for other loops.  Add 1 to
        this base when peeling for gaps.
        * tree-vect-loop.c (vect_analyze_loop_2): Allow peeling for gaps
        with fully-masked loops.
        (vect_estimate_min_profitable_iters): Handle the single peeled
        iteration in that case.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vect_analyze_group_access_1): Allow
        single-element interleaving even if the size is not a power of 2.
        * tree-vect-stmts.c (get_load_store_type): Disallow elementwise
        accesses for single-element interleaving if the group size is
        not a power of 2.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (fold_extract_last_@var{m}): Document.
        * doc/sourcebuild.texi (vect_fold_extract_last): Likewise.
        * optabs.def (fold_extract_last_optab): New optab.
        * internal-fn.def (FOLD_EXTRACT_LAST): New internal function.
        * internal-fn.c (fold_extract_direct): New macro.
        (expand_fold_extract_optab_fn): Likewise.
        (direct_fold_extract_optab_supported_p): Likewise.
        * tree-vectorizer.h (EXTRACT_LAST_REDUCTION): New vect_reduction_type.
        * tree-vect-loop.c (vect_model_reduction_cost): Handle
        EXTRACT_LAST_REDUCTION.
        (get_initial_def_for_reduction): Do not create an initial vector
        for EXTRACT_LAST_REDUCTION reductions.
        (vectorizable_reduction): Leave the scalar phi in place for
        EXTRACT_LAST_REDUCTIONs.  Try using EXTRACT_LAST_REDUCTION
        ahead of INTEGER_INDUC_COND_REDUCTION.  Do not check for an
        epilogue code for EXTRACT_LAST_REDUCTION and defer the
        transform phase to vectorizable_condition.
        * tree-vect-stmts.c (vect_finish_stmt_generation_1): New function,
        split out from...
        (vect_finish_stmt_generation): ...here.
        (vect_finish_replace_stmt): New function.
        (vectorizable_condition): Handle EXTRACT_LAST_REDUCTION.
        * config/aarch64/aarch64-sve.md (fold_extract_last_<mode>): New
        pattern.
        * config/aarch64/aarch64.md (UNSPEC_CLASTB): New unspec.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (extract_last_@var{m}): Document.
        * optabs.def (extract_last_optab): New optab.
        * internal-fn.def (EXTRACT_LAST): New internal function.
        * internal-fn.c (cond_unary_direct): New macro.
        (expand_cond_unary_optab_fn): Likewise.
        (direct_cond_unary_optab_supported_p): Likewise.
        * tree-vect-loop.c (vectorizable_live_operation): Allow fully-masked
        loops using EXTRACT_LAST.
        * config/aarch64/aarch64-sve.md (aarch64_sve_lastb<mode>): Rename to...
        (extract_last_<mode>): ...this optab.
        (vec_extract<mode><Vel>): Update accordingly.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (empty_mask_is_expensive): New hook.
        * doc/tm.texi.in (TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE): New hook.
        * doc/tm.texi: Regenerate.
        * targhooks.h (default_empty_mask_is_expensive): Declare.
        * targhooks.c (default_empty_mask_is_expensive): New function.
        * tree-vectorizer.c (vectorize_loops): Only call optimize_mask_stores
        if the target says that empty masks are expensive.
        * config/aarch64/aarch64.c (aarch64_empty_mask_is_expensive):
        New function.
        (TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE): Redefine.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (_loop_vec_info::mask_skip_niters): New field.
        (LOOP_VINFO_MASK_SKIP_NITERS): New macro.
        (vect_use_loop_mask_for_alignment_p): New function.
        (vect_prepare_for_masked_peels, vect_gen_while_not): Declare.
        * tree-vect-loop-manip.c (vect_set_loop_masks_directly): Add an
        niters_skip argument.  Make sure that the first niters_skip elements
        of the first iteration are inactive.
        (vect_set_loop_condition_masked): Handle LOOP_VINFO_MASK_SKIP_NITERS.
        Update call to vect_set_loop_masks_directly.
        (get_misalign_in_elems): New function, split out from...
        (vect_gen_prolog_loop_niters): ...here.
        (vect_update_init_of_dr): Take a code argument that specifies whether
        the adjustment should be added or subtracted.
        (vect_update_init_of_drs): Likewise.
        (vect_prepare_for_masked_peels): New function.
        (vect_do_peeling): Skip prologue peeling if we're using a mask
        instead.  Update call to vect_update_inits_of_drs.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
        mask_skip_niters.
        (vect_analyze_loop_2): Allow fully-masked loops with peeling for
        alignment.  Do not include the number of peeled iterations in
        the minimum threshold in that case.
        (vectorizable_induction): Adjust the start value down by
        LOOP_VINFO_MASK_SKIP_NITERS iterations.
        (vect_transform_loop): Call vect_prepare_for_masked_peels.
        Take the number of skipped iterations into account when calculating
        the loop bounds.
        * tree-vect-stmts.c (vect_gen_while_not): New function.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/sourcebuild.texi (vect_fully_masked): Document.
        * params.def (PARAM_MIN_VECT_LOOP_BOUND): Change minimum and
        default value to 0.
        * tree-vect-loop.c (vect_analyze_loop_costing): New function,
        split out from...
        (vect_analyze_loop_2): ...here. Don't check the vectorization
        factor against the number of loop iterations if the loop is
        fully-masked.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-ssa-loop-ivopts.c (USE_ADDRESS): Split into...
        (USE_REF_ADDRESS, USE_PTR_ADDRESS): ...these new use types.
        (dump_groups): Update accordingly.
        (iv_use::mem_type): New member variable.
        (address_p): New function.
        (record_use): Add a mem_type argument and initialize the new
        mem_type field.
        (record_group_use): Add a mem_type argument.  Use address_p.
        Remove obsolete null checks of base_object.  Update call to record_use.
        (find_interesting_uses_op): Update call to record_group_use.
        (find_interesting_uses_cond): Likewise.
        (find_interesting_uses_address): Likewise.
        (get_mem_type_for_internal_fn): New function.
        (find_address_like_use): Likewise.
        (find_interesting_uses_stmt): Try find_address_like_use before
        calling find_interesting_uses_op.
        (addr_offset_valid_p): Use the iv mem_type field as the type
        of the addressed memory.
        (add_autoinc_candidates): Likewise.
        (get_address_cost): Likewise.
        (split_small_address_groups_p): Use address_p.
        (split_address_groups): Likewise.
        (add_iv_candidate_for_use): Likewise.
        (autoinc_possible_for_pair): Likewise.
        (rewrite_groups): Likewise.
        (get_use_type): Check for USE_REF_ADDRESS instead of USE_ADDRESS.
        (determine_group_iv_cost): Update after split of USE_ADDRESS.
        (get_alias_ptr_type_for_ptr_address): New function.
        (rewrite_use_address): Rewrite address uses in calls that were
        identified by find_address_like_use.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_expr_addr_expr_1): Handle ADDR_EXPRs of
        TARGET_MEM_REFs.
        * gimple-expr.h (is_gimple_addressable: Likewise.
        * gimple-expr.c (is_gimple_address): Likewise.
        * internal-fn.c (expand_call_mem_ref): New function.
        (expand_mask_load_optab_fn): Use it.
        (expand_mask_store_optab_fn): Likewise.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (cond_add@var{mode}, cond_sub@var{mode})
        (cond_and@var{mode}, cond_ior@var{mode}, cond_xor@var{mode})
        (cond_smin@var{mode}, cond_smax@var{mode}, cond_umin@var{mode})
        (cond_umax@var{mode}): Document.
        * optabs.def (cond_add_optab, cond_sub_optab, cond_and_optab)
        (cond_ior_optab, cond_xor_optab, cond_smin_optab, cond_smax_optab)
        (cond_umin_optab, cond_umax_optab): New optabs.
        * internal-fn.def (COND_ADD, COND_SUB, COND_MIN, COND_MAX, COND_AND)
        (COND_IOR, COND_XOR): New internal functions.
        * internal-fn.h (get_conditional_internal_fn): Declare.
        * internal-fn.c (cond_binary_direct): New macro.
        (expand_cond_binary_optab_fn): Likewise.
        (direct_cond_binary_optab_supported_p): Likewise.
        (get_conditional_internal_fn): New function.
        * tree-vect-loop.c (vectorizable_reduction): Handle fully-masked loops.
        Cope with reduction statements that are vectorized as calls rather
        than assignments.
        * config/aarch64/aarch64-sve.md (cond_<optab><mode>): New insns.
        * config/aarch64/iterators.md (UNSPEC_COND_ADD, UNSPEC_COND_SUB)
        (UNSPEC_COND_SMAX, UNSPEC_COND_UMAX, UNSPEC_COND_SMIN)
        (UNSPEC_COND_UMIN, UNSPEC_COND_AND, UNSPEC_COND_ORR)
        (UNSPEC_COND_EOR): New unspecs.
        (optab): Add mappings for them.
        (SVE_COND_INT_OP, SVE_COND_FP_OP): New int iterators.
        (sve_int_op, sve_fp_op): New int attributes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * optabs.def (while_ult_optab): New optab.
        * doc/md.texi (while_ult@var{m}@var{n}): Document.
        * internal-fn.def (WHILE_ULT): New internal function.
        * internal-fn.h (direct_internal_fn_supported_p): New override
        that takes two types as argument.
        * internal-fn.c (while_direct): New macro.
        (expand_while_optab_fn): New function.
        (convert_optab_supported_p): Likewise.
        (direct_while_optab_supported_p): New macro.
        * wide-int.h (wi::udiv_ceil): New function.
        * tree-vectorizer.h (rgroup_masks): New structure.
        (vec_loop_masks): New typedef.
        (_loop_vec_info): Add masks, mask_compare_type, can_fully_mask_p
        and fully_masked_p.
        (LOOP_VINFO_CAN_FULLY_MASK_P, LOOP_VINFO_FULLY_MASKED_P)
        (LOOP_VINFO_MASKS, LOOP_VINFO_MASK_COMPARE_TYPE): New macros.
        (vect_max_vf): New function.
        (slpeel_make_loop_iterate_ntimes): Delete.
        (vect_set_loop_condition, vect_get_loop_mask_type, vect_gen_while)
        (vect_halve_mask_nunits, vect_double_mask_nunits): Declare.
        (vect_record_loop_mask, vect_get_loop_mask): Likewise.
        * tree-vect-loop-manip.c: Include tree-ssa-loop-niter.h,
        internal-fn.h, stor-layout.h and optabs-query.h.
        (vect_set_loop_mask): New function.
        (add_preheader_seq): Likewise.
        (add_header_seq): Likewise.
        (interleave_supported_p): Likewise.
        (vect_maybe_permute_loop_masks): Likewise.
        (vect_set_loop_masks_directly): Likewise.
        (vect_set_loop_condition_masked): Likewise.
        (vect_set_loop_condition_unmasked): New function, split out from
        slpeel_make_loop_iterate_ntimes.
        (slpeel_make_loop_iterate_ntimes): Rename to..
        (vect_set_loop_condition): ...this.  Use vect_set_loop_condition_masked
        for fully-masked loops and vect_set_loop_condition_unmasked otherwise.
        (vect_do_peeling): Update call accordingly.
        (vect_gen_vector_loop_niters): Use VF as the step for fully-masked
        loops.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
        mask_compare_type, can_fully_mask_p and fully_masked_p.
        (release_vec_loop_masks): New function.
        (_loop_vec_info): Use it to free the loop masks.
        (can_produce_all_loop_masks_p): New function.
        (vect_get_max_nscalars_per_iter): Likewise.
        (vect_verify_full_masking): Likewise.
        (vect_analyze_loop_2): Save LOOP_VINFO_CAN_FULLY_MASK_P around
        retries, and free the mask rgroups before retrying.  Check loop-wide
        reasons for disallowing fully-masked loops.  Make the final decision
        about whether use a fully-masked loop or not.
        (vect_estimate_min_profitable_iters): Do not assume that peeling
        for the number of iterations will be needed for fully-masked loops.
        (vectorizable_reduction): Disable fully-masked loops.
        (vectorizable_live_operation): Likewise.
        (vect_halve_mask_nunits): New function.
        (vect_double_mask_nunits): Likewise.
        (vect_record_loop_mask): Likewise.
        (vect_get_loop_mask): Likewise.
        (vect_transform_loop): Handle the case in which the final loop
        iteration might handle a partial vector.  Call vect_set_loop_condition
        instead of slpeel_make_loop_iterate_ntimes.
        * tree-vect-stmts.c: Include tree-ssa-loop-niter.h and gimple-fold.h.
        (check_load_store_masking): New function.
        (prepare_load_store_mask): Likewise.
        (vectorizable_store): Handle fully-masked loops.
        (vectorizable_load): Likewise.
        (supportable_widening_operation): Use vect_halve_mask_nunits for
        booleans.
        (supportable_narrowing_operation): Likewise vect_double_mask_nunits.
        (vect_gen_while): New function.
        * config/aarch64/aarch64.md (umax<mode>3): New expander.
        (aarch64_uqdec<mode>): New insn.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * optabs.def (reduc_and_scal_optab, reduc_ior_scal_optab)
        (reduc_xor_scal_optab): New optabs.
        * doc/md.texi (reduc_and_scal_@var{m}, reduc_ior_scal_@var{m})
        (reduc_xor_scal_@var{m}): Document.
        * doc/sourcebuild.texi (vect_logical_reduc): Likewise.
        * internal-fn.def (IFN_REDUC_AND, IFN_REDUC_IOR, IFN_REDUC_XOR): New
        internal functions.
        * fold-const-call.c (fold_const_call): Handle them.
        * tree-vect-loop.c (reduction_fn_for_scalar_code): Return the new
        internal functions for BIT_AND_EXPR, BIT_IOR_EXPR and BIT_XOR_EXPR.
        * config/aarch64/aarch64-sve.md (reduc_<bit_reduc>_scal_<mode>):
        (*reduc_<bit_reduc>_scal_<mode>): New patterns.
        * config/aarch64/iterators.md (UNSPEC_ANDV, UNSPEC_ORV)
        (UNSPEC_XORV): New unspecs.
        (optab): Add entries for them.
        (BITWISEV): New int iterator.
        (bit_reduc_op): New int attributes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (vec_shl_insert_@var{m}): New optab.
        * internal-fn.def (VEC_SHL_INSERT): New internal function.
        * optabs.def (vec_shl_insert_optab): New optab.
        * tree-vectorizer.h (can_duplicate_and_interleave_p): Declare.
        (duplicate_and_interleave): Likewise.
        * tree-vect-loop.c: Include internal-fn.h.
        (neutral_op_for_slp_reduction): New function, split out from
        get_initial_defs_for_reduction.
        (get_initial_def_for_reduction): Handle option 2 for variable-length
        vectors by loading the neutral value into a vector and then shifting
        the initial value into element 0.
        (get_initial_defs_for_reduction): Replace the code argument with
        the neutral value calculated by neutral_op_for_slp_reduction.
        Use gimple_build_vector for constant-length vectors.
        Use IFN_VEC_SHL_INSERT for variable-length vectors if all
        but the first group_size elements have a neutral value.
        Use duplicate_and_interleave otherwise.
        (vect_create_epilog_for_reduction): Take a neutral_op parameter.
        Update call to get_initial_defs_for_reduction.  Handle SLP
        reductions for variable-length vectors by creating one vector
        result for each scalar result, with the elements associated
        with other scalar results stubbed out with the neutral value.
        (vectorizable_reduction): Call neutral_op_for_slp_reduction.
        Require IFN_VEC_SHL_INSERT for double reductions on
        variable-length vectors, or SLP reductions that have
        a neutral value.  Require can_duplicate_and_interleave_p
        support for variable-length unchained SLP reductions if there
        is no neutral value, such as for MIN/MAX reductions.  Also require
        the number of vector elements to be a multiple of the number of
        SLP statements when doing variable-length unchained SLP reductions.
        Update call to vect_create_epilog_for_reduction.
        * tree-vect-slp.c (can_duplicate_and_interleave_p): Make public
        and remove initial values.
        (duplicate_and_interleave): Make public.
        * config/aarch64/aarch64.md (UNSPEC_INSR): New unspec.
        * config/aarch64/aarch64-sve.md (vec_shl_insert_<mode>): New insn.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c: Include gimple-fold.h and internal-fn.h
        (can_duplicate_and_interleave_p): New function.
        (vect_get_and_check_slp_defs): Take the vector of statements
        rather than just the current one.  Remove excess parentheses.
        Restriction rejectinon of vect_constant_def and vect_external_def
        for variable-length vectors to boolean types, or types for which
        can_duplicate_and_interleave_p is false.
        (vect_build_slp_tree_2): Update call to vect_get_and_check_slp_defs.
        (duplicate_and_interleave): New function.
        (vect_get_constant_vectors): Use gimple_build_vector for
        constant-length vectors and suitable variable-length constant
        vectors.  Use duplicate_and_interleave for other variable-length
        vectors.  Don't defer the update when inserting new statements.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop.c (vect_estimate_min_profitable_iters): Make sure
        min_profitable_iters doesn't go negative.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (vec_mask_load_lanes@var{m}@var{n}): Document.
        (vec_mask_store_lanes@var{m}@var{n}): Likewise.
        * optabs.def (vec_mask_load_lanes_optab): New optab.
        (vec_mask_store_lanes_optab): Likewise.
        * internal-fn.def (MASK_LOAD_LANES): New internal function.
        (MASK_STORE_LANES): Likewise.
        * internal-fn.c (mask_load_lanes_direct): New macro.
        (mask_store_lanes_direct): Likewise.
        (expand_mask_load_optab_fn): Handle masked operations.
        (expand_mask_load_lanes_optab_fn): New macro.
        (expand_mask_store_optab_fn): Handle masked operations.
        (expand_mask_store_lanes_optab_fn): New macro.
        (direct_mask_load_lanes_optab_supported_p): Likewise.
        (direct_mask_store_lanes_optab_supported_p): Likewise.
        * tree-vectorizer.h (vect_store_lanes_supported): Take a masked_p
        parameter.
        (vect_load_lanes_supported): Likewise.
        * tree-vect-data-refs.c (strip_conversion): New function.
        (can_group_stmts_p): Likewise.
        (vect_analyze_data_ref_accesses): Use it instead of checking
        for a pair of assignments.
        (vect_store_lanes_supported): Take a masked_p parameter.
        (vect_load_lanes_supported): Likewise.
        * tree-vect-loop.c (vect_analyze_loop_2): Update calls to
        vect_store_lanes_supported and vect_load_lanes_supported.
        * tree-vect-slp.c (vect_analyze_slp_instance): Likewise.
        * tree-vect-stmts.c (get_group_load_store_type): Take a masked_p
        parameter.  Don't allow gaps for masked accesses.
        Use vect_get_store_rhs.  Update calls to vect_store_lanes_supported
        and vect_load_lanes_supported.
        (get_load_store_type): Take a masked_p parameter and update
        call to get_group_load_store_type.
        (vectorizable_store): Update call to get_load_store_type.
        Handle IFN_MASK_STORE_LANES.
        (vectorizable_load): Update call to get_load_store_type.
        Handle IFN_MASK_LOAD_LANES.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-modes.def: Define x2, x3 and x4 vector
        modes for SVE.
        * config/aarch64/aarch64-protos.h
        (aarch64_sve_struct_memory_operand_p): Declare.
        * config/aarch64/iterators.md (SVE_STRUCT): New mode iterator.
        (vector_count, insn_length, VSINGLE, vsingle): New mode attributes.
        (VPRED, vpred): Handle SVE structure modes.
        * config/aarch64/constraints.md (Utx): New constraint.
        * config/aarch64/predicates.md (aarch64_sve_struct_memory_operand)
        (aarch64_sve_struct_nonimmediate_operand): New predicates.
        * config/aarch64/aarch64.md (UNSPEC_LDN, UNSPEC_STN): New unspecs.
        * config/aarch64/aarch64-sve.md (mov<mode>, *aarch64_sve_mov<mode>_le)
        (*aarch64_sve_mov<mode>_be, pred_mov<mode>): New patterns for
        structure modes.  Split into pieces after RA.
        (vec_load_lanes<mode><vsingle>, vec_mask_load_lanes<mode><vsingle>)
        (vec_store_lanes<mode><vsingle>, vec_mask_store_lanes<mode><vsingle>):
        New patterns.
        * config/aarch64/aarch64.c (aarch64_classify_vector_mode): Handle
        SVE structure modes.
        (aarch64_classify_address): Likewise.
        (sizetochar): Move earlier in file.
        (aarch64_print_operand): Handle SVE register lists.
        (aarch64_array_mode): New function.
        (aarch64_sve_struct_memory_operand_p): Likewise.
        (TARGET_ARRAY_MODE): Redefine.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (array_mode): New target hook.
        * doc/tm.texi.in (TARGET_ARRAY_MODE): New hook.
        * doc/tm.texi: Regenerate.
        * hooks.h (hook_optmode_mode_uhwi_none): Declare.
        * hooks.c (hook_optmode_mode_uhwi_none): New function.
        * tree-vect-data-refs.c (vect_lanes_optab_supported_p): Use
        targetm.array_mode.
        * stor-layout.c (mode_for_array): Likewise.  Support polynomial
        type sizes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * fold-const.c (fold_binary_loc): Check the argument types
        rather than the result type when testing for a vector operation.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/tm.texi.in (DWARF_LAZY_REGISTER_VALUE): Document.
        * doc/tm.texi: Regenerate.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/invoke.texi (-msve-vector-bits=): Document new option.
        (sve): Document new AArch64 extension.
        * doc/md.texi (w): Extend the description of the AArch64
        constraint to include SVE vectors.
        (Upl, Upa): Document new AArch64 predicate constraints.
        * config/aarch64/aarch64-opts.h (aarch64_sve_vector_bits_enum): New
        enum.
        * config/aarch64/aarch64.opt (sve_vector_bits): New enum.
        (msve-vector-bits=): New option.
        * config/aarch64/aarch64-option-extensions.def (fp, simd): Disable
        SVE when these are disabled.
        (sve): New extension.
        * config/aarch64/aarch64-modes.def: Define SVE vector and predicate
        modes.  Adjust their number of units based on aarch64_sve_vg.
        (MAX_BITSIZE_MODE_ANY_MODE): Define.
        * config/aarch64/aarch64-protos.h (ADDR_QUERY_ANY): New
        aarch64_addr_query_type.
        (aarch64_const_vec_all_same_in_range_p, aarch64_sve_pred_mode)
        (aarch64_sve_cnt_immediate_p, aarch64_sve_addvl_addpl_immediate_p)
        (aarch64_sve_inc_dec_immediate_p, aarch64_add_offset_temporaries)
        (aarch64_split_add_offset, aarch64_output_sve_cnt_immediate)
        (aarch64_output_sve_addvl_addpl, aarch64_output_sve_inc_dec_immediate)
        (aarch64_output_sve_mov_immediate, aarch64_output_ptrue): Declare.
        (aarch64_simd_imm_zero_p): Delete.
        (aarch64_check_zero_based_sve_index_immediate): Declare.
        (aarch64_sve_index_immediate_p, aarch64_sve_arith_immediate_p)
        (aarch64_sve_bitmask_immediate_p, aarch64_sve_dup_immediate_p)
        (aarch64_sve_cmp_immediate_p, aarch64_sve_float_arith_immediate_p)
        (aarch64_sve_float_mul_immediate_p): Likewise.
        (aarch64_classify_symbol): Take the offset as a HOST_WIDE_INT
        rather than an rtx.
        (aarch64_sve_ld1r_operand_p, aarch64_sve_ldr_operand_p): Declare.
        (aarch64_expand_mov_immediate): Take a gen_vec_duplicate callback.
        (aarch64_emit_sve_pred_move, aarch64_expand_sve_mem_move): Declare.
        (aarch64_expand_sve_vec_cmp_int, aarch64_expand_sve_vec_cmp_float)
        (aarch64_expand_sve_vcond, aarch64_expand_sve_vec_perm): Declare.
        (aarch64_regmode_natural_size): Likewise.
        * config/aarch64/aarch64.h (AARCH64_FL_SVE): New macro.
        (AARCH64_FL_V8_3, AARCH64_FL_RCPC, AARCH64_FL_DOTPROD): Shift
        left one place.
        (AARCH64_ISA_SVE, TARGET_SVE): New macros.
        (FIXED_REGISTERS, CALL_USED_REGISTERS, REGISTER_NAMES): Add entries
        for VG and the SVE predicate registers.
        (V_ALIASES): Add a "z"-prefixed alias.
        (FIRST_PSEUDO_REGISTER): Change to P15_REGNUM + 1.
        (AARCH64_DWARF_VG, AARCH64_DWARF_P0): New macros.
        (PR_REGNUM_P, PR_LO_REGNUM_P): Likewise.
        (PR_LO_REGS, PR_HI_REGS, PR_REGS): New reg_classes.
        (REG_CLASS_NAMES): Add entries for them.
        (REG_CLASS_CONTENTS): Likewise.  Update ALL_REGS to include VG
        and the predicate registers.
        (aarch64_sve_vg): Declare.
        (BITS_PER_SVE_VECTOR, BYTES_PER_SVE_VECTOR, BYTES_PER_SVE_PRED)
        (SVE_BYTE_MODE, MAX_COMPILE_TIME_VEC_BYTES): New macros.
        (REGMODE_NATURAL_SIZE): Define.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Handle
        SVE macros.
        * config/aarch64/aarch64.c: Include cfgrtl.h.
        (simd_immediate_info): Add a constructor for series vectors,
        and an associated step field.
        (aarch64_sve_vg): New variable.
        (aarch64_dbx_register_number): Handle VG and the predicate registers.
        (aarch64_vect_struct_mode_p, aarch64_vector_mode_p): Delete.
        (VEC_ADVSIMD, VEC_SVE_DATA, VEC_SVE_PRED, VEC_STRUCT, VEC_ANY_SVE)
        (VEC_ANY_DATA, VEC_STRUCT): New constants.
        (aarch64_advsimd_struct_mode_p, aarch64_sve_pred_mode_p)
        (aarch64_classify_vector_mode, aarch64_vector_data_mode_p)
        (aarch64_sve_data_mode_p, aarch64_sve_pred_mode)
        (aarch64_get_mask_mode): New functions.
        (aarch64_hard_regno_nregs): Handle SVE data modes for FP_REGS
        and FP_LO_REGS.  Handle PR_REGS, PR_LO_REGS and PR_HI_REGS.
        (aarch64_hard_regno_mode_ok): Handle VG.  Also handle the SVE
        predicate modes and predicate registers.  Explicitly restrict
        GPRs to modes of 16 bytes or smaller.  Only allow FP registers
        to store a vector mode if it is recognized by
        aarch64_classify_vector_mode.
        (aarch64_regmode_natural_size): New function.
        (aarch64_hard_regno_caller_save_mode): Return the original mode
        for predicates.
        (aarch64_sve_cnt_immediate_p, aarch64_output_sve_cnt_immediate)
        (aarch64_sve_addvl_addpl_immediate_p, aarch64_output_sve_addvl_addpl)
        (aarch64_sve_inc_dec_immediate_p, aarch64_output_sve_inc_dec_immediate)
        (aarch64_add_offset_1_temporaries, aarch64_offset_temporaries): New
        functions.
        (aarch64_add_offset): Add a temp2 parameter.  Assert that temp1
        does not overlap dest if the function is frame-related.  Handle
        SVE constants.
        (aarch64_split_add_offset): New function.
        (aarch64_add_sp, aarch64_sub_sp): Add temp2 parameters and pass
        them aarch64_add_offset.
        (aarch64_allocate_and_probe_stack_space): Add a temp2 parameter
        and update call to aarch64_sub_sp.
        (aarch64_add_cfa_expression): New function.
        (aarch64_expand_prologue): Pass extra temporary registers to the
        functions above.  Handle the case in which we need to emit new
        DW_CFA_expressions for registers that were originally saved
        relative to the stack pointer, but now have to be expressed
        relative to the frame pointer.
        (aarch64_output_mi_thunk): Pass extra temporary registers to the
        functions above.
        (aarch64_expand_epilogue): Likewise.  Prevent inheritance of
        IP0 and IP1 values for SVE frames.
        (aarch64_expand_vec_series): New function.
        (aarch64_expand_sve_widened_duplicate): Likewise.
        (aarch64_expand_sve_const_vector): Likewise.
        (aarch64_expand_mov_immediate): Add a gen_vec_duplicate parameter.
        Handle SVE constants.  Use emit_move_insn to move a force_const_mem
        into the register, rather than emitting a SET directly.
        (aarch64_emit_sve_pred_move, aarch64_expand_sve_mem_move)
        (aarch64_get_reg_raw_mode, offset_4bit_signed_scaled_p)
        (offset_6bit_unsigned_scaled_p, aarch64_offset_7bit_signed_scaled_p)
        (offset_9bit_signed_scaled_p): New functions.
        (aarch64_replicate_bitmask_imm): New function.
        (aarch64_bitmask_imm): Use it.
        (aarch64_cannot_force_const_mem): Reject expressions involving
        a CONST_POLY_INT.  Update call to aarch64_classify_symbol.
        (aarch64_classify_index): Handle SVE indices, by requiring
        a plain register index with a scale that matches the element size.
        (aarch64_classify_address): Handle SVE addresses.  Assert that
        the mode of the address is VOIDmode or an integer mode.
        Update call to aarch64_classify_symbol.
        (aarch64_classify_symbolic_expression): Update call to
        aarch64_classify_symbol.
        (aarch64_const_vec_all_in_range_p): New function.
        (aarch64_print_vector_float_operand): Likewise.
        (aarch64_print_operand): Handle 'N' and 'C'.  Use "zN" rather than
        "vN" for FP registers with SVE modes.  Handle (const ...) vectors
        and the FP immediates 1.0 and 0.5.
        (aarch64_print_address_internal): Handle SVE addresses.
        (aarch64_print_operand_address): Use ADDR_QUERY_ANY.
        (aarch64_regno_regclass): Handle predicate registers.
        (aarch64_secondary_reload): Handle big-endian reloads of SVE
        data modes.
        (aarch64_class_max_nregs): Handle SVE modes and predicate registers.
        (aarch64_rtx_costs): Check for ADDVL and ADDPL instructions.
        (aarch64_convert_sve_vector_bits): New function.
        (aarch64_override_options): Use it to handle -msve-vector-bits=.
        (aarch64_classify_symbol): Take the offset as a HOST_WIDE_INT
        rather than an rtx.
        (aarch64_legitimate_constant_p): Use aarch64_classify_vector_mode.
        Handle SVE vector and predicate modes.  Accept VL-based constants
        that need only one temporary register, and VL offsets that require
        no temporary registers.
        (aarch64_conditional_register_usage): Mark the predicate registers
        as fixed if SVE isn't available.
        (aarch64_vector_mode_supported_p): Use aarch64_classify_vector_mode.
        Return true for SVE vector and predicate modes.
        (aarch64_simd_container_mode): Take the number of bits as a poly_int64
        rather than an unsigned int.  Handle SVE modes.
        (aarch64_preferred_simd_mode): Update call accordingly.  Handle
        SVE modes.
        (aarch64_autovectorize_vector_sizes): Add BYTES_PER_SVE_VECTOR
        if SVE is enabled.
        (aarch64_sve_index_immediate_p, aarch64_sve_arith_immediate_p)
        (aarch64_sve_bitmask_immediate_p, aarch64_sve_dup_immediate_p)
        (aarch64_sve_cmp_immediate_p, aarch64_sve_float_arith_immediate_p)
        (aarch64_sve_float_mul_immediate_p): New functions.
        (aarch64_sve_valid_immediate): New function.
        (aarch64_simd_valid_immediate): Use it as the fallback for SVE vectors.
        Explicitly reject structure modes.  Check for INDEX constants.
        Handle PTRUE and PFALSE constants.
        (aarch64_check_zero_based_sve_index_immediate): New function.
        (aarch64_simd_imm_zero_p): Delete.
        (aarch64_mov_operand_p): Use aarch64_simd_valid_immediate for
        vector modes.  Accept constants in the range of CNT[BHWD].
        (aarch64_simd_scalar_immediate_valid_for_move): Explicitly
        ask for an Advanced SIMD mode.
        (aarch64_sve_ld1r_operand_p, aarch64_sve_ldr_operand_p): New functions.
        (aarch64_simd_vector_alignment): Handle SVE predicates.
        (aarch64_vectorize_preferred_vector_alignment): New function.
        (aarch64_simd_vector_alignment_reachable): Use it instead of
        the vector size.
        (aarch64_shift_truncation_mask): Use aarch64_vector_data_mode_p.
        (aarch64_output_sve_mov_immediate, aarch64_output_ptrue): New
        functions.
        (MAX_VECT_LEN): Delete.
        (expand_vec_perm_d): Add a vec_flags field.
        (emit_unspec2, aarch64_expand_sve_vec_perm): New functions.
        (aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_zip)
        (aarch64_evpc_ext): Don't apply a big-endian lane correction
        for SVE modes.
        (aarch64_evpc_rev): Rename to...
        (aarch64_evpc_rev_local): ...this.  Use a predicated operation for SVE.
        (aarch64_evpc_rev_global): New function.
        (aarch64_evpc_dup): Enforce a 64-byte range for SVE DUP.
        (aarch64_evpc_tbl): Use MAX_COMPILE_TIME_VEC_BYTES instead of
        MAX_VECT_LEN.
        (aarch64_evpc_sve_tbl): New function.
        (aarch64_expand_vec_perm_const_1): Update after rename of
        aarch64_evpc_rev.  Handle SVE permutes too, trying
        aarch64_evpc_rev_global and using aarch64_evpc_sve_tbl rather
        than aarch64_evpc_tbl.
        (aarch64_vectorize_vec_perm_const): Initialize vec_flags.
        (aarch64_sve_cmp_operand_p, aarch64_unspec_cond_code)
        (aarch64_gen_unspec_cond, aarch64_expand_sve_vec_cmp_int)
        (aarch64_emit_unspec_cond, aarch64_emit_unspec_cond_or)
        (aarch64_emit_inverted_unspec_cond, aarch64_expand_sve_vec_cmp_float)
        (aarch64_expand_sve_vcond): New functions.
        (aarch64_modes_tieable_p): Use aarch64_vector_data_mode_p instead
        of aarch64_vector_mode_p.
        (aarch64_dwarf_poly_indeterminate_value): New function.
        (aarch64_compute_pressure_classes): Likewise.
        (aarch64_can_change_mode_class): Likewise.
        (TARGET_GET_RAW_RESULT_MODE, TARGET_GET_RAW_ARG_MODE): Redefine.
        (TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT): Likewise.
        (TARGET_VECTORIZE_GET_MASK_MODE): Likewise.
        (TARGET_DWARF_POLY_INDETERMINATE_VALUE): Likewise.
        (TARGET_COMPUTE_PRESSURE_CLASSES): Likewise.
        (TARGET_CAN_CHANGE_MODE_CLASS): Likewise.
        * config/aarch64/constraints.md (Upa, Upl, Uav, Uat, Usv, Usi, Utr)
        (Uty, Dm, vsa, vsc, vsd, vsi, vsn, vsl, vsm, vsA, vsM, vsN): New
        constraints.
        (Dn, Dl, Dr): Accept const as well as const_vector.
        (Dz): Likewise.  Compare against CONST0_RTX.
        * config/aarch64/iterators.md: Refer to "Advanced SIMD" instead
        of "vector" where appropriate.
        (SVE_ALL, SVE_BH, SVE_BHS, SVE_BHSI, SVE_HSDI, SVE_HSF, SVE_SD)
        (SVE_SDI, SVE_I, SVE_F, PRED_ALL, PRED_BHS): New mode iterators.
        (UNSPEC_SEL, UNSPEC_ANDF, UNSPEC_IORF, UNSPEC_XORF, UNSPEC_COND_LT)
        (UNSPEC_COND_LE, UNSPEC_COND_EQ, UNSPEC_COND_NE, UNSPEC_COND_GE)
        (UNSPEC_COND_GT, UNSPEC_COND_LO, UNSPEC_COND_LS, UNSPEC_COND_HS)
        (UNSPEC_COND_HI, UNSPEC_COND_UO): New unspecs.
        (Vetype, VEL, Vel, VWIDE, Vwide, vw, vwcore, V_INT_EQUIV)
        (v_int_equiv): Extend to SVE modes.
        (Vesize, V128, v128, Vewtype, V_FP_EQUIV, v_fp_equiv, VPRED): New
        mode attributes.
        (LOGICAL_OR, SVE_INT_UNARY, SVE_FP_UNARY): New code iterators.
        (optab): Handle popcount, smin, smax, umin, umax, abs and sqrt.
        (logical_nn, lr, sve_int_op, sve_fp_op): New code attributs.
        (LOGICALF, OPTAB_PERMUTE, UNPACK, UNPACK_UNSIGNED, SVE_COND_INT_CMP)
        (SVE_COND_FP_CMP): New int iterators.
        (perm_hilo): Handle the new unpack unspecs.
        (optab, logicalf_op, su, perm_optab, cmp_op, imm_con): New int
        attributes.
        * config/aarch64/predicates.md (aarch64_sve_cnt_immediate)
        (aarch64_sve_addvl_addpl_immediate, aarch64_split_add_offset_immediate)
        (aarch64_pluslong_or_poly_operand, aarch64_nonmemory_operand)
        (aarch64_equality_operator, aarch64_constant_vector_operand)
        (aarch64_sve_ld1r_operand, aarch64_sve_ldr_operand): New predicates.
        (aarch64_sve_nonimmediate_operand): Likewise.
        (aarch64_sve_general_operand): Likewise.
        (aarch64_sve_dup_operand, aarch64_sve_arith_immediate): Likewise.
        (aarch64_sve_sub_arith_immediate, aarch64_sve_inc_dec_immediate)
        (aarch64_sve_logical_immediate, aarch64_sve_mul_immediate): Likewise.
        (aarch64_sve_dup_immediate, aarch64_sve_cmp_vsc_immediate): Likewise.
        (aarch64_sve_cmp_vsd_immediate, aarch64_sve_index_immediate): Likewise.
        (aarch64_sve_float_arith_immediate): Likewise.
        (aarch64_sve_float_arith_with_sub_immediate): Likewise.
        (aarch64_sve_float_mul_immediate, aarch64_sve_arith_operand): Likewise.
        (aarch64_sve_add_operand, aarch64_sve_logical_operand): Likewise.
        (aarch64_sve_lshift_operand, aarch64_sve_rshift_operand): Likewise.
        (aarch64_sve_mul_operand, aarch64_sve_cmp_vsc_operand): Likewise.
        (aarch64_sve_cmp_vsd_operand, aarch64_sve_index_operand): Likewise.
        (aarch64_sve_float_arith_operand): Likewise.
        (aarch64_sve_float_arith_with_sub_operand): Likewise.
        (aarch64_sve_float_mul_operand): Likewise.
        (aarch64_sve_vec_perm_operand): Likewise.
        (aarch64_pluslong_operand): Include aarch64_sve_addvl_addpl_immediate.
        (aarch64_mov_operand): Accept const_poly_int and const_vector.
        (aarch64_simd_lshift_imm, aarch64_simd_rshift_imm): Accept const
        as well as const_vector.
        (aarch64_simd_imm_zero, aarch64_simd_imm_minus_one): Move earlier
        in file.  Use CONST0_RTX and CONSTM1_RTX.
        (aarch64_simd_or_scalar_imm_zero): Likewise.  Add match_codes.
        (aarch64_simd_reg_or_zero): Accept const as well as const_vector.
        Use aarch64_simd_imm_zero.
        * config/aarch64/aarch64-sve.md: New file.
        * config/aarch64/aarch64.md: Include it.
        (VG_REGNUM, P0_REGNUM, P7_REGNUM, P15_REGNUM): New register numbers.
        (UNSPEC_REV, UNSPEC_LD1_SVE, UNSPEC_ST1_SVE, UNSPEC_MERGE_PTRUE)
        (UNSPEC_PTEST_PTRUE, UNSPEC_UNPACKSHI, UNSPEC_UNPACKUHI)
        (UNSPEC_UNPACKSLO, UNSPEC_UNPACKULO, UNSPEC_PACK)
        (UNSPEC_FLOAT_CONVERT, UNSPEC_WHILE_LO): New unspec constants.
        (sve): New attribute.
        (enabled): Disable instructions with the sve attribute unless
        TARGET_SVE.
        (movqi, movhi): Pass CONST_POLY_INT operaneds through
        aarch64_expand_mov_immediate.
        (*mov<mode>_aarch64, *movsi_aarch64, *movdi_aarch64): Handle
        CNT[BHSD] immediates.
        (movti): Split CONST_POLY_INT moves into two halves.
        (add<mode>3): Accept aarch64_pluslong_or_poly_operand.
        Split additions that need a temporary here if the destination
        is the stack pointer.
        (*add<mode>3_aarch64): Handle ADDVL and ADDPL immediates.
        (*add<mode>3_poly_1): New instruction.
        (set_clobber_cc): New expander.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * simplify-rtx.c (simplify_immed_subreg): Add an inner_bytes
        parameter and use it instead of GET_MODE_SIZE (innermode).  Use
        inner_bytes * BITS_PER_UNIT instead of GET_MODE_BITSIZE (innermode).
        Use CEIL (inner_bytes, GET_MODE_UNIT_SIZE (innermode)) instead of
        GET_MODE_NUNITS (innermode).  Also add a first_elem parameter.
        Change innermode from fixed_mode_size to machine_mode.
        (simplify_subreg): Update call accordingly.  Handle a constant-sized
        subreg of a variable-length CONST_VECTOR.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-ssa-address.c (mem_ref_valid_without_offset_p): New function.
        (add_offset_to_base): New function, split out from...
        (create_mem_ref): ...here.  When handling a scale other than 1,
        check first whether the address is valid without the offset.
        Add it into the base if so, leaving the index and scale as-is.

2018-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83778
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): Call
        fold_for_warn before checking if arg2 is INTEGER_CST.

2018-01-12  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/predicates.md (load_multiple_operation): Delete.
        (store_multiple_operation): Delete.
        * config/rs6000/rs6000-cpus.def (601): Remove MASK_STRING.
        * config/rs6000/rs6000-protos.h (rs6000_output_load_multiple): Delete.
        * config/rs6000/rs6000-string.c (expand_block_move): Delete everything
        guarded by TARGET_STRING.
        (rs6000_output_load_multiple): Delete.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Delete
        OPTION_MASK_STRING / TARGET_STRING handling.
        (print_operand) <'N', 'O'>: Add comment that these are unused now.
        (const rs6000_opt_masks) <"string">: Change mask to 0.
        * config/rs6000/rs6000.h (TARGET_DEFAULT): Remove MASK_STRING.
        (MASK_STRING): Delete.
        * config/rs6000/rs6000.md (*mov<mode>_string): Delete TARGET_STRING
        parts.  Simplify.
        (load_multiple): Delete.
        (*ldmsi8): Delete.
        (*ldmsi7): Delete.
        (*ldmsi6): Delete.
        (*ldmsi5): Delete.
        (*ldmsi4): Delete.
        (*ldmsi3): Delete.
        (store_multiple): Delete.
        (*stmsi8): Delete.
        (*stmsi7): Delete.
        (*stmsi6): Delete.
        (*stmsi5): Delete.
        (*stmsi4): Delete.
        (*stmsi3): Delete.
        (movmemsi_8reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_6reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_4reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_2reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_1reg): Delete.
        (corresponding unnamed define_insn): Delete.
        * config/rs6000/rs6000.opt (mno-string): New.
        (mstring): Replace by deprecation warning stub.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mstring.

2018-01-12  Jakub Jelinek  <jakub@redhat.com>

        * regrename.c (regrename_do_replace): If replacing the same
        reg multiple times, try to reuse last created gen_raw_REG.

        PR debug/81155
        * bb-reorder.c (pass_partition_blocks::gate): In lto don't partition
        main to workaround a bug in GDB.

2018-01-12  Tom de Vries  <tom@codesourcery.com>

        PR target/83737
        * config.gcc (nvptx*-*-*): Set use_gcc_stdint=wrap.

2018-01-12  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/80481
        * ira-color.c (get_cap_member): New function.
        (allocnos_conflict_by_live_ranges_p): Use it.
        (slot_coalesced_allocno_live_ranges_intersect_p): Add assert.
        (setup_slot_coalesced_allocno_live_ranges): Ditto.

2018-01-12  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * config/alpha/alpha.md (*saddsi_1): New insn_ans_split pattern.
        (*saddl_se_1): Ditto.
        (*ssubsi_1): Ditto.
        (*ssubl_se_1): Ditto.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-predcom.c (aff_combination_dr_offset): Use wi::to_poly_widest
        rather than wi::to_widest for DR_INITs.
        * tree-vect-data-refs.c (vect_find_same_alignment_drs): Use
        wi::to_poly_offset rather than wi::to_offset for DR_INIT.
        (vect_analyze_data_ref_accesses): Require both DR_INITs to be
        INTEGER_CSTs.
        (vect_analyze_group_access_1): Note that here.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vectorizer.c (get_vec_alignment_for_array_type): Handle
        polynomial type sizes.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * gimplify.c (gimple_add_tmp_var_fn): Allow variables to have a
        poly_uint64 size, rather than requiring an unsigned HOST_WIDE_INT size.
        (gimple_add_tmp_var): Likewise.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * gimple.c (gimple_alloc_counts): Use uint64_t instead of int.
        (gimple_alloc_sizes): Likewise.
        (dump_gimple_statistics): Use PRIu64 in printf format.
        * gimple.h: Change uint64_t to int.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * tree-core.h: Use uint64_t instead of int.
        * tree.c (tree_node_counts): Likewise.
        (tree_node_sizes): Likewise.
        (dump_tree_statistics): Use PRIu64 in printf format.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * Makefile.in: As qsort_chk is implemented in vec.c, add
        vec.o to linkage of gencfn-macros.
        * tree.c (build_new_poly_int_cst): Add CXX_MEM_STAT_INFO as it's
        passing the info to record_node_allocation_statistics.
        (test_vector_cst_patterns): Add CXX_MEM_STAT_INFO to declaration
        and pass the info.
        * ggc-common.c (struct ggc_usage): Add operator== and use
        it in operator< and compare function.
        * mem-stats.h (struct mem_usage): Likewise.
        * vec.c (struct vec_usage): Remove operator< and compare
        function. Can be simply inherited.

2018-01-12  Martin Jambor  <mjambor@suse.cz>

        PR target/81616
        * params.def: New parameter PARAM_AVOID_FMA_MAX_BITS.
        * tree-ssa-math-opts.c: Include domwalk.h.
        (convert_mult_to_fma_1): New function.
        (fma_transformation_info): New type.
        (fma_deferring_state): Likewise.
        (cancel_fma_deferring): New function.
        (result_of_phi): Likewise.
        (last_fma_candidate_feeds_initial_phi): Likewise.
        (convert_mult_to_fma): Added deferring logic, split actual
        transformation to convert_mult_to_fma_1.
        (math_opts_dom_walker): New type.
        (math_opts_dom_walker::after_dom_children): New method, body moved
        here from pass_optimize_widening_mul::execute, added deferring logic
        bits.
        (pass_optimize_widening_mul::execute): Moved most of code to
        math_opts_dom_walker::after_dom_children.
        * config/i386/x86-tune.def (X86_TUNE_AVOID_128FMA_CHAINS): New.
        * config/i386/i386.c (ix86_option_override_internal): Added
        maybe_setting of PARAM_AVOID_FMA_MAX_BITS.

2018-01-12  Richard Biener  <rguenther@suse.de>

        PR debug/83157
        * dwarf2out.c (gen_variable_die): Do not reset old_die for
        inline instance vars.

2018-01-12  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/81819
        * config/rx/rx.c (rx_is_restricted_memory_address):
        Handle SUBREG case.

2018-01-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/80846
        * target.def (split_reduction): New target hook.
        * targhooks.c (default_split_reduction): New function.
        * targhooks.h (default_split_reduction): Declare.
        * tree-vect-loop.c (vect_create_epilog_for_reduction): If the
        target requests first reduce vectors by combining low and high
        parts.
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Adjust.
        (get_vectype_for_scalar_type_and_size): Export.
        * tree-vectorizer.h (get_vectype_for_scalar_type_and_size): Declare.
        * doc/tm.texi.in (TARGET_VECTORIZE_SPLIT_REDUCTION): Document.
        * doc/tm.texi: Regenerate.
        * config/i386/i386.c (ix86_split_reduction): Implement
        TARGET_VECTORIZE_SPLIT_REDUCTION.

2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/83368
        * config/sparc/sparc.h (PIC_OFFSET_TABLE_REGNUM): Set to INVALID_REGNUM
        in PIC mode except for TARGET_VXWORKS_RTP.
        * config/sparc/sparc.c: Include cfgrtl.h.
        (TARGET_INIT_PIC_REG): Define.
        (TARGET_USE_PSEUDO_PIC_REG): Likewise.
        (sparc_pic_register_p): New predicate.
        (sparc_legitimate_address_p): Use it.
        (sparc_legitimize_pic_address): Likewise.
        (sparc_delegitimize_address): Likewise.
        (sparc_mode_dependent_address_p): Likewise.
        (gen_load_pcrel_sym): Remove 4th parameter.
        (load_got_register): Adjust call to above.  Remove obsolete stuff.
        (sparc_expand_prologue): Do not call load_got_register here.
        (sparc_flat_expand_prologue): Likewise.
        (sparc_output_mi_thunk): Set the pic_offset_table_rtx object.
        (sparc_use_pseudo_pic_reg): New function.
        (sparc_init_pic_reg): Likewise.
        * config/sparc/sparc.md (vxworks_load_got): Set the GOT register.
        (builtin_setjmp_receiver): Enable only for TARGET_VXWORKS_RTP.

2018-01-12  Christophe Lyon  <christophe.lyon@linaro.org>

        * doc/sourcebuild.texi (Effective-Target Keywords, Other attributes):
        Add item for branch_cost.

2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/83565
        * rtlanal.c (nonzero_bits1): On WORD_REGISTER_OPERATIONS machines, do
        not extend the result to a larger mode for rotate operations.
        (num_sign_bit_copies1): Likewise.

2018-01-12  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR target/40411
        * config/sol2.h (STARTFILE_ARCH_SPEC): Don't use with -shared or
        -symbolic.
        Use values-Xc.o for -pedantic.
        Link with values-xpg4.o for C90, values-xpg6.o otherwise.

2018-01-12  Martin Liska  <mliska@suse.cz>

        PR ipa/83054
        * ipa-devirt.c (final_warning_record::grow_type_warnings):
        New function.
        (possible_polymorphic_call_targets): Use it.
        (ipa_devirt): Likewise.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * profile-count.h (enum profile_quality): Use 0 as invalid
        enum value of profile_quality.

2018-01-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * doc/invoke.texi (NDS32 Options): Add -mext-perf, -mext-perf2 and
        -mext-string options.

2018-01-12  Richard Biener  <rguenther@suse.de>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Process
        DECL_DEBUG_EXPR conditional on DECL_HAS_DEBUG_EXPR_P.
        * tree-streamer-in.c (lto_input_ts_decl_common_tree_pointers):
        Likewise.
        * tree-streamer-out.c (write_ts_decl_common_tree_pointers): Likewise.

2018-01-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * configure.ac (--with-long-double-format): Add support for the
        configuration option to change the default long double format on
        PowerPC systems.
        * config.gcc (powerpc*-linux*-*): Likewise.
        * configure: Regenerate.
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): If long
        double is IEEE, define __KC__ and __KF__ to allow floatn.h to be
        used without modification.

2018-01-11  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000-builtin.def (BU_P7_MISC_X): New #define.
        (SPEC_BARRIER): New instantiation of BU_P7_MISC_X.
        * config/rs6000/rs6000.c (rs6000_expand_builtin): Handle
        MISC_BUILTIN_SPEC_BARRIER.
        (rs6000_init_builtins): Likewise.
        * config/rs6000/rs6000.md (UNSPECV_SPEC_BARRIER): New UNSPECV
        enum value.
        (speculation_barrier): New define_insn.
        * doc/extend.texi: Document __builtin_speculation_barrier.

2018-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/83203
        * config/i386/i386.c (ix86_expand_vector_init_one_nonzero): If one_var
        is 0, for V{8,16}S[IF] and V[48]D[IF]mode use gen_vec_set<mode>_0.
        * config/i386/sse.md (VI8_AVX_AVX512F, VI4F_256_512): New mode
        iterators.
        (ssescalarmodesuffix): Add 512-bit vectors.  Use "d" or "q" for
        integral modes instead of "ss" and "sd".
        (vec_set<mode>_0): New define_insns for 256-bit and 512-bit
        vectors with 32-bit and 64-bit elements.
        (vecdupssescalarmodesuffix): New mode attribute.
        (vec_dup<mode>): Use it.

2018-01-11  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83330
        * config/i386/i386.c (ix86_compute_frame_layout): Align stack
        frame if argument is passed on stack.

2018-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/82682
        * ree.c (combine_reaching_defs): Optimize also
        reg2=exp; reg1=reg2; reg2=any_extend(reg1); into
        reg2=any_extend(exp); reg1=reg2;, formatting fix.

2018-01-11  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83189
        * gimple-ssa-isolate-paths.c (isolate_path): Fix profile update.

2018-01-11  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83718
        * tree-inline.c (copy_cfg_body): Adjust num&den for scaling
        after they are computed.

2018-01-11  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/83695
        * gimple-loop-linterchange.cc
        (tree_loop_interchange::interchange_loops): Call scev_reset_htab to
        reset cached scev information after interchange.
        (pass_linterchange::execute): Remove call to scev_reset_htab.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm_neon.h (vfmlal_lane_low_u32, vfmlal_lane_high_u32,
        vfmlalq_laneq_low_u32, vfmlalq_lane_low_u32, vfmlal_laneq_low_u32,
        vfmlalq_laneq_high_u32, vfmlalq_lane_high_u32, vfmlal_laneq_high_u32,
        vfmlsl_lane_low_u32, vfmlsl_lane_high_u32, vfmlslq_laneq_low_u32,
        vfmlslq_lane_low_u32, vfmlsl_laneq_low_u32, vfmlslq_laneq_high_u32,
        vfmlslq_lane_high_u32, vfmlsl_laneq_high_u32): Define.
        * config/arm/arm_neon_builtins.def (vfmal_lane_low,
        vfmal_lane_lowv4hf, vfmal_lane_lowv8hf, vfmal_lane_high,
        vfmal_lane_highv4hf, vfmal_lane_highv8hf, vfmsl_lane_low,
        vfmsl_lane_lowv4hf, vfmsl_lane_lowv8hf, vfmsl_lane_high,
        vfmsl_lane_highv4hf, vfmsl_lane_highv8hf): New sets of builtins.
        * config/arm/iterators.md (VFMLSEL2, vfmlsel2): New mode attributes.
        (V_lane_reg): Likewise.
        * config/arm/neon.md (neon_vfm<vfml_op>l_lane_<vfml_half><VCVTF:mode>):
        New define_expand.
        (neon_vfm<vfml_op>l_lane_<vfml_half><vfmlsel2><mode>): Likewise.
        (vfmal_lane_low<mode>_intrinsic,
        vfmal_lane_low<vfmlsel2><mode>_intrinsic,
        vfmal_lane_high<vfmlsel2><mode>_intrinsic,
        vfmal_lane_high<mode>_intrinsic, vfmsl_lane_low<mode>_intrinsic,
        vfmsl_lane_low<vfmlsel2><mode>_intrinsic,
        vfmsl_lane_high<vfmlsel2><mode>_intrinsic,
        vfmsl_lane_high<mode>_intrinsic): New define_insns.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (fp16fml): New feature.
        (ALL_SIMD): Add fp16fml.
        (armv8.2-a): Add fp16fml as an option.
        (armv8.3-a): Likewise.
        (armv8.4-a): Add fp16fml as part of fp16.
        * config/arm/arm.h (TARGET_FP16FML): Define.
        * config/arm/arm-c.c (arm_cpu_builtins): Define __ARM_FEATURE_FP16_FML
        when appropriate.
        * config/arm/arm-modes.def (V2HF): Define.
        * config/arm/arm_neon.h (vfmlal_low_u32, vfmlsl_low_u32,
        vfmlal_high_u32, vfmlsl_high_u32, vfmlalq_low_u32,
        vfmlslq_low_u32, vfmlalq_high_u32, vfmlslq_high_u32): Define.
        * config/arm/arm_neon_builtins.def (vfmal_low, vfmal_high,
        vfmsl_low, vfmsl_high): New set of builtins.
        * config/arm/iterators.md (PLUSMINUS): New code iterator.
        (vfml_op): New code attribute.
        (VFMLHALVES): New int iterator.
        (VFML, VFMLSEL): New mode attributes.
        (V_reg): Define mapping for V2HF.
        (V_hi, V_lo): New mode attributes.
        (VF_constraint): Likewise.
        (vfml_half, vfml_half_selector): New int attributes.
        * config/arm/neon.md (neon_vfm<vfml_op>l_<vfml_half><mode>): New
        define_expand.
        (vfmal_low<mode>_intrinsic, vfmsl_high<mode>_intrinsic,
        vfmal_high<mode>_intrinsic, vfmsl_low<mode>_intrinsic):
        New define_insn.
        * config/arm/t-arm-elf (v8_fps): Add fp16fml.
        * config/arm/t-multilib (v8_2_a_simd_variants): Add fp16fml.
        * config/arm/unspecs.md (UNSPEC_VFML_LO, UNSPEC_VFML_HI): New unspecs.
        * doc/invoke.texi (ARM Options): Document fp16fml.  Update armv8.4-a
        documentation.
        * doc/sourcebuild.texi (arm_fp16fml_neon_ok, arm_fp16fml_neon):
        Document new effective target and option set.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (armv8_4): New feature.
        (ARMv8_4a): New fgroup.
        (armv8.4-a): New arch.
        * config/arm/arm-tables.opt: Regenerate.
        * config/arm/t-aprofile: Add matching rules for -march=armv8.4-a.
        * config/arm/t-arm-elf (all_v8_archs): Add armv8.4-a.
        * config/arm/t-multilib (v8_4_a_simd_variants): New variable.
        Add matching rules for -march=armv8.4-a and extensions.
        * doc/invoke.texi (ARM Options): Document -march=armv8.4-a.

2018-01-11  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/81821
        * config/rx/rx.md (BW): New mode attribute.
        (sync_lock_test_and_setsi): Add mode suffix to insn output.

2018-01-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83435
        * graphite.c (canonicalize_loop_form): Ignore fake loop exit edges.
        * graphite-scop-detection.c (scop_detection::get_sese): Likewise.
        * tree-vrp.c (add_assert_info): Drop TREE_OVERFLOW if they appear.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64.c (aarch64_address_info): Add a const_offset
        field.
        (aarch64_classify_address): Initialize it.  Track polynomial offsets.
        (aarch64_print_address_internal): Use it to check for a zero offset.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-modes.def (NUM_POLY_INT_COEFFS): Set to 2.
        * config/aarch64/aarch64-protos.h (aarch64_initial_elimination_offset):
        Return a poly_int64 rather than a HOST_WIDE_INT.
        (aarch64_offset_7bit_signed_scaled_p): Take the offset as a poly_int64
        rather than a HOST_WIDE_INT.
        * config/aarch64/aarch64.h (aarch64_frame): Protect with
        HAVE_POLY_INT_H rather than HOST_WIDE_INT.  Change locals_offset,
        hard_fp_offset, frame_size, initial_adjust, callee_offset and
        final_offset from HOST_WIDE_INT to poly_int64.
        * config/aarch64/aarch64-builtins.c (aarch64_simd_expand_args): Use
        to_constant when getting the number of units in an Advanced SIMD
        mode.
        (aarch64_builtin_vectorized_function): Check for a constant number
        of units.
        * config/aarch64/aarch64-simd.md (mov<mode>): Handle polynomial
        GET_MODE_SIZE.
        (aarch64_ld<VSTRUCT:nregs>_lane<VALLDIF:mode>): Use the nunits
        attribute instead of GET_MODE_NUNITS.
        * config/aarch64/aarch64.c (aarch64_hard_regno_nregs)
        (aarch64_class_max_nregs): Use the constant_lowest_bound of the
        GET_MODE_SIZE for fixed-size registers.
        (aarch64_const_vec_all_same_in_range_p): Use const_vec_duplicate_p.
        (aarch64_hard_regno_call_part_clobbered, aarch64_classify_index)
        (aarch64_mode_valid_for_sched_fusion_p, aarch64_classify_address)
        (aarch64_legitimize_address_displacement, aarch64_secondary_reload)
        (aarch64_print_operand, aarch64_print_address_internal)
        (aarch64_address_cost, aarch64_rtx_costs, aarch64_register_move_cost)
        (aarch64_short_vector_p, aapcs_vfp_sub_candidate)
        (aarch64_simd_attr_length_rglist, aarch64_operands_ok_for_ldpstp):
        Handle polynomial GET_MODE_SIZE.
        (aarch64_hard_regno_caller_save_mode): Likewise.  Return modes
        wider than SImode without modification.
        (tls_symbolic_operand_type): Use strip_offset instead of split_const.
        (aarch64_pass_by_reference, aarch64_layout_arg, aarch64_pad_reg_upward)
        (aarch64_gimplify_va_arg_expr): Assert that we don't yet handle
        passing and returning SVE modes.
        (aarch64_function_value, aarch64_layout_arg): Use gen_int_mode
        rather than GEN_INT.
        (aarch64_emit_probe_stack_range): Take the size as a poly_int64
        rather than a HOST_WIDE_INT, but call sorry if it isn't constant.
        (aarch64_allocate_and_probe_stack_space): Likewise.
        (aarch64_layout_frame): Cope with polynomial offsets.
        (aarch64_save_callee_saves, aarch64_restore_callee_saves): Take the
        start_offset as a poly_int64 rather than a HOST_WIDE_INT.  Track
        polynomial offsets.
        (offset_9bit_signed_unscaled_p, offset_12bit_unsigned_scaled_p)
        (aarch64_offset_7bit_signed_scaled_p): Take the offset as a
        poly_int64 rather than a HOST_WIDE_INT.
        (aarch64_get_separate_components, aarch64_process_components)
        (aarch64_expand_prologue, aarch64_expand_epilogue)
        (aarch64_use_return_insn_p): Handle polynomial frame offsets.
        (aarch64_anchor_offset): New function, split out from...
        (aarch64_legitimize_address): ...here.
        (aarch64_builtin_vectorization_cost): Handle polynomial
        TYPE_VECTOR_SUBPARTS.
        (aarch64_simd_check_vect_par_cnst_half): Handle polynomial
        GET_MODE_NUNITS.
        (aarch64_simd_make_constant, aarch64_expand_vector_init): Get the
        number of elements from the PARALLEL rather than the mode.
        (aarch64_shift_truncation_mask): Use GET_MODE_UNIT_BITSIZE
        rather than GET_MODE_BITSIZE.
        (aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_ext)
        (aarch64_evpc_rev, aarch64_evpc_dup, aarch64_evpc_zip)
        (aarch64_expand_vec_perm_const_1): Handle polynomial
        d->perm.length () and d->perm elements.
        (aarch64_evpc_tbl): Likewise.  Use nelt rather than GET_MODE_NUNITS.
        Apply to_constant to d->perm elements.
        (aarch64_simd_valid_immediate, aarch64_vec_fpconst_pow_of_2): Handle
        polynomial CONST_VECTOR_NUNITS.
        (aarch64_move_pointer): Take amount as a poly_int64 rather
        than an int.
        (aarch64_progress_pointer): Avoid temporary variable.
        * config/aarch64/aarch64.md (aarch64_<crc_variant>): Use
        the mode attribute instead of GET_MODE.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64.c (aarch64_force_temporary): Assert that
        x exists before using it.
        (aarch64_add_constant_internal): Rename to...
        (aarch64_add_offset_1): ...this.  Replace regnum with separate
        src and dest rtxes.  Handle the case in which they're different,
        including when the offset is zero.  Replace scratchreg with an rtx.
        Use 2 additions if there is no spare register into which we can
        move a 16-bit constant.
        (aarch64_add_constant): Delete.
        (aarch64_add_offset): Replace reg with separate src and dest
        rtxes.  Take a poly_int64 offset instead of a HOST_WIDE_INT.
        Use aarch64_add_offset_1.
        (aarch64_add_sp, aarch64_sub_sp): Take the scratch register as
        an rtx rather than an int.  Take the delta as a poly_int64
        rather than a HOST_WIDE_INT.  Use aarch64_add_offset.
        (aarch64_expand_mov_immediate): Update uses of aarch64_add_offset.
        (aarch64_expand_prologue): Update calls to aarch64_sub_sp,
        aarch64_allocate_and_probe_stack_space and aarch64_add_offset.
        (aarch64_expand_epilogue): Update calls to aarch64_add_offset
        and aarch64_add_sp.
        (aarch64_output_mi_thunk): Use aarch64_add_offset rather than
        aarch64_add_constant.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_reinterpret_float_as_int):
        Use scalar_float_mode.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-simd.md
        (aarch64_fml<f16mac1>l<f16quad>_low<mode>): Avoid GET_MODE_NUNITS.
        (aarch64_fml<f16mac1>l<f16quad>_high<mode>): Likewise.
        (aarch64_fml<f16mac1>l_lane_lowv2sf): Likewise.
        (aarch64_fml<f16mac1>l_lane_highv2sf): Likewise.
        (aarch64_fml<f16mac1>lq_laneq_lowv4sf): Likewise.
        (aarch64_fml<f16mac1>lq_laneq_highv4sf): Likewise.
        (aarch64_fml<f16mac1>l_laneq_lowv2sf): Likewise.
        (aarch64_fml<f16mac1>l_laneq_highv2sf): Likewise.
        (aarch64_fml<f16mac1>lq_lane_lowv4sf): Likewise.
        (aarch64_fml<f16mac1>lq_lane_highv4sf): Likewise.

2018-01-11  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/83514
        * config/arm/arm.c (arm_declare_function_name): Set arch_to_print if
        targ_options->x_arm_arch_string is non NULL.

2018-01-11  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64.h
        (AARCH64_FL_FOR_ARCH8_4): Add  AARCH64_FL_DOTPROD.

2018-01-11  Sudakshina Das  <sudi.das@arm.com>

        PR target/82096
        * expmed.c (emit_store_flag_force): Swap if const op0
        and change VOIDmode to mode of op0.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

        PR rtl-optimization/83761
        * caller-save.c (replace_reg_with_saved_mem): Pass bits rather
        than bytes to mode_for_size.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83189
        * gfortran.fortran-torture/compile/pr83189.f90: New testcase.
        * tree-ssa-loop-manip.c (tree_transform_and_unroll_loop): Handle zero
        profile.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83575
        * cfgrtl.c (rtl_verify_edges): Only verify fixability of partition
        when in layout mode.
        (cfg_layout_finalize): Do not verify cfg before we are out of layout.
        * cfgcleanup.c (try_optimize_cfg): Only verify flow info when doing
        partition fixup.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-modes.def (V2HF): New VECTOR_MODE.
        * config/aarch64/aarch64-option-extension.def: Add
        AARCH64_OPT_EXTENSION of 'fp16fml'.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_FP16_FML): Define if TARGET_F16FML is true.
        * config/aarch64/predicates.md (aarch64_lane_imm3): New predicate.
        * config/aarch64/constraints.md (Ui7): New constraint.
        * config/aarch64/iterators.md (VFMLA_W): New mode iterator.
        (VFMLA_SEL_W): Ditto.
        (f16quad): Ditto.
        (f16mac1): Ditto.
        (VFMLA16_LOW): New int iterator.
        (VFMLA16_HIGH): Ditto.
        (UNSPEC_FMLAL): New unspec.
        (UNSPEC_FMLSL): Ditto.
        (UNSPEC_FMLAL2): Ditto.
        (UNSPEC_FMLSL2): Ditto.
        (f16mac): New code attribute.
        * config/aarch64/aarch64-simd-builtins.def
        (aarch64_fmlal_lowv2sf): Ditto.
        (aarch64_fmlsl_lowv2sf): Ditto.
        (aarch64_fmlalq_lowv4sf): Ditto.
        (aarch64_fmlslq_lowv4sf): Ditto.
        (aarch64_fmlal_highv2sf): Ditto.
        (aarch64_fmlsl_highv2sf): Ditto.
        (aarch64_fmlalq_highv4sf): Ditto.
        (aarch64_fmlslq_highv4sf): Ditto.
        (aarch64_fmlal_lane_lowv2sf): Ditto.
        (aarch64_fmlsl_lane_lowv2sf): Ditto.
        (aarch64_fmlal_laneq_lowv2sf): Ditto.
        (aarch64_fmlsl_laneq_lowv2sf): Ditto.
        (aarch64_fmlalq_lane_lowv4sf): Ditto.
        (aarch64_fmlsl_lane_lowv4sf): Ditto.
        (aarch64_fmlalq_laneq_lowv4sf): Ditto.
        (aarch64_fmlsl_laneq_lowv4sf): Ditto.
        (aarch64_fmlal_lane_highv2sf): Ditto.
        (aarch64_fmlsl_lane_highv2sf): Ditto.
        (aarch64_fmlal_laneq_highv2sf): Ditto.
        (aarch64_fmlsl_laneq_highv2sf): Ditto.
        (aarch64_fmlalq_lane_highv4sf): Ditto.
        (aarch64_fmlsl_lane_highv4sf): Ditto.
        (aarch64_fmlalq_laneq_highv4sf): Ditto.
        (aarch64_fmlsl_laneq_highv4sf): Ditto.
        * config/aarch64/aarch64-simd.md:
        (aarch64_fml<f16mac1>l<f16quad>_low<mode>): New pattern.
        (aarch64_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
        (aarch64_simd_fml<f16mac1>l<f16quad>_low<mode>): Ditto.
        (aarch64_simd_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
        (aarch64_fml<f16mac1>l_lane_lowv2sf): Ditto.
        (aarch64_fml<f16mac1>l_lane_highv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_lane_lowv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_lane_highv2sf): Ditto.
        (aarch64_fml<f16mac1>lq_laneq_lowv4sf): Ditto.
        (aarch64_fml<f16mac1>lq_laneq_highv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_laneq_lowv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_laneq_highv4sf): Ditto.
        (aarch64_fml<f16mac1>l_laneq_lowv2sf): Ditto.
        (aarch64_fml<f16mac1>l_laneq_highv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_laneq_lowv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_laneq_highv2sf): Ditto.
        (aarch64_fml<f16mac1>lq_lane_lowv4sf): Ditto.
        (aarch64_fml<f16mac1>lq_lane_highv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_lane_lowv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_lane_highv4sf): Ditto.
        * config/aarch64/arm_neon.h (vfmlal_low_u32): New intrinsic.
        (vfmlsl_low_u32): Ditto.
        (vfmlalq_low_u32): Ditto.
        (vfmlslq_low_u32): Ditto.
        (vfmlal_high_u32): Ditto.
        (vfmlsl_high_u32): Ditto.
        (vfmlalq_high_u32): Ditto.
        (vfmlslq_high_u32): Ditto.
        (vfmlal_lane_low_u32): Ditto.
        (vfmlsl_lane_low_u32): Ditto.
        (vfmlal_laneq_low_u32): Ditto.
        (vfmlsl_laneq_low_u32): Ditto.
        (vfmlalq_lane_low_u32): Ditto.
        (vfmlslq_lane_low_u32): Ditto.
        (vfmlalq_laneq_low_u32): Ditto.
        (vfmlslq_laneq_low_u32): Ditto.
        (vfmlal_lane_high_u32): Ditto.
        (vfmlsl_lane_high_u32): Ditto.
        (vfmlal_laneq_high_u32): Ditto.
        (vfmlsl_laneq_high_u32): Ditto.
        (vfmlalq_lane_high_u32): Ditto.
        (vfmlslq_lane_high_u32): Ditto.
        (vfmlalq_laneq_high_u32): Ditto.
        (vfmlslq_laneq_high_u32): Ditto.
        * config/aarch64/aarch64.h (AARCH64_FL_F16SML): New flag.
        (AARCH64_FL_FOR_ARCH8_4): New.
        (AARCH64_ISA_F16FML): New ISA flag.
        (TARGET_F16FML): New feature flag for fp16fml.
        (doc/invoke.texi): Document new fp16fml option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-builtins.c:
        (aarch64_types_ternopu_imm_qualifiers, TYPES_TERNOPUI): New.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_SHA3): Define if TARGET_SHA3 is true.
        * config/aarch64/aarch64.h (AARCH64_FL_SHA3): New flags.
        (AARCH64_ISA_SHA3): New ISA flag.
        (TARGET_SHA3): New feature flag for sha3.
        * config/aarch64/iterators.md (sha512_op): New int attribute.
        (CRYPTO_SHA512): New int iterator.
        (UNSPEC_SHA512H): New unspec.
        (UNSPEC_SHA512H2): Ditto.
        (UNSPEC_SHA512SU0): Ditto.
        (UNSPEC_SHA512SU1): Ditto.
        * config/aarch64/aarch64-simd-builtins.def
        (aarch64_crypto_sha512hqv2di): New builtin.
        (aarch64_crypto_sha512h2qv2di): Ditto.
        (aarch64_crypto_sha512su0qv2di): Ditto.
        (aarch64_crypto_sha512su1qv2di): Ditto.
        (aarch64_eor3qv8hi): Ditto.
        (aarch64_rax1qv2di): Ditto.
        (aarch64_xarqv2di): Ditto.
        (aarch64_bcaxqv8hi): Ditto.
        * config/aarch64/aarch64-simd.md:
        (aarch64_crypto_sha512h<sha512_op>qv2di): New pattern.
        (aarch64_crypto_sha512su0qv2di): Ditto.
        (aarch64_crypto_sha512su1qv2di): Ditto.
        (aarch64_eor3qv8hi): Ditto.
        (aarch64_rax1qv2di): Ditto.
        (aarch64_xarqv2di): Ditto.
        (aarch64_bcaxqv8hi): Ditto.
        * config/aarch64/arm_neon.h (vsha512hq_u64): New intrinsic.
        (vsha512h2q_u64): Ditto.
        (vsha512su0q_u64): Ditto.
        (vsha512su1q_u64): Ditto.
        (veor3q_u16): Ditto.
        (vrax1q_u64): Ditto.
        (vxarq_u64): Ditto.
        (vbcaxq_u16): Ditto.
        * config/arm/types.md (crypto_sha512): New type attribute.
        (crypto_sha3): Ditto.
        (doc/invoke.texi): Document new sha3 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-builtins.c:
        (aarch64_types_quadopu_imm_qualifiers, TYPES_QUADOPUI): New.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_SM3): Define if TARGET_SM4 is true.
        (__ARM_FEATURE_SM4): Define if TARGET_SM4 is true.
        * config/aarch64/aarch64.h (AARCH64_FL_SM4): New flags.
        (AARCH64_ISA_SM4): New ISA flag.
        (TARGET_SM4): New feature flag for sm4.
        * config/aarch64/aarch64-simd-builtins.def
        (aarch64_sm3ss1qv4si): Ditto.
        (aarch64_sm3tt1aq4si): Ditto.
        (aarch64_sm3tt1bq4si): Ditto.
        (aarch64_sm3tt2aq4si): Ditto.
        (aarch64_sm3tt2bq4si): Ditto.
        (aarch64_sm3partw1qv4si): Ditto.
        (aarch64_sm3partw2qv4si): Ditto.
        (aarch64_sm4eqv4si): Ditto.
        (aarch64_sm4ekeyqv4si): Ditto.
        * config/aarch64/aarch64-simd.md:
        (aarch64_sm3ss1qv4si): Ditto.
        (aarch64_sm3tt<sm3tt_op>qv4si): Ditto.
        (aarch64_sm3partw<sm3part_op>qv4si): Ditto.
        (aarch64_sm4eqv4si): Ditto.
        (aarch64_sm4ekeyqv4si): Ditto.
        * config/aarch64/iterators.md (sm3tt_op): New int iterator.
        (sm3part_op): Ditto.
        (CRYPTO_SM3TT): Ditto.
        (CRYPTO_SM3PART): Ditto.
        (UNSPEC_SM3SS1): New unspec.
        (UNSPEC_SM3TT1A): Ditto.
        (UNSPEC_SM3TT1B): Ditto.
        (UNSPEC_SM3TT2A): Ditto.
        (UNSPEC_SM3TT2B): Ditto.
        (UNSPEC_SM3PARTW1): Ditto.
        (UNSPEC_SM3PARTW2): Ditto.
        (UNSPEC_SM4E): Ditto.
        (UNSPEC_SM4EKEY): Ditto.
        * config/aarch64/constraints.md (Ui2): New constraint.
        * config/aarch64/predicates.md (aarch64_imm2): New predicate.
        * config/arm/types.md (crypto_sm3): New type attribute.
        (crypto_sm4): Ditto.
        * config/aarch64/arm_neon.h (vsm3ss1q_u32): New intrinsic.
        (vsm3tt1aq_u32): Ditto.
        (vsm3tt1bq_u32): Ditto.
        (vsm3tt2aq_u32): Ditto.
        (vsm3tt2bq_u32): Ditto.
        (vsm3partw1q_u32): Ditto.
        (vsm3partw2q_u32): Ditto.
        (vsm4eq_u32): Ditto.
        (vsm4ekeyq_u32): Ditto.
        (doc/invoke.texi): Document new sm4 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-arches.def (armv8.4-a): New architecture.
        * config/aarch64/aarch64.h (AARCH64_ISA_V8_4): New ISA flag.
        (AARCH64_FL_FOR_ARCH8_4): New.
        (AARCH64_FL_V8_4): New flag.
        (doc/invoke.texi): Document new armv8.4-a option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_AES): Define if TARGET_AES is true.
        (__ARM_FEATURE_SHA2): Define if TARGET_SHA2 is true.
        * config/aarch64/aarch64-option-extension.def: Add
        AARCH64_OPT_EXTENSION of 'sha2'.
        (aes): Add AARCH64_OPT_EXTENSION of 'aes'.
        (crypto): Disable sha2 and aes if crypto disabled.
        (crypto): Enable aes and sha2 if enabled.
        (simd): Disable sha2 and aes if simd disabled.
        * config/aarch64/aarch64.h (AARCH64_FL_AES, AARCH64_FL_SHA2):
        New flags.
        (AARCH64_ISA_AES, AARCH64_ISA_SHA2): New ISA flags.
        (TARGET_SHA2): New feature flag for sha2.
        (TARGET_AES): New feature flag for aes.
        * config/aarch64/aarch64-simd.md:
        (aarch64_crypto_aes<aes_op>v16qi): Make pattern
        conditional on TARGET_AES.
        (aarch64_crypto_aes<aesmc_op>v16qi): Ditto.
        (aarch64_crypto_sha1hsi): Make pattern conditional
        on TARGET_SHA2.
        (aarch64_crypto_sha1hv4si): Ditto.
        (aarch64_be_crypto_sha1hv4si): Ditto.
        (aarch64_crypto_sha1su1v4si): Ditto.
        (aarch64_crypto_sha1<sha1_op>v4si): Ditto.
        (aarch64_crypto_sha1su0v4si): Ditto.
        (aarch64_crypto_sha256h<sha256_op>v4si): Ditto.
        (aarch64_crypto_sha256su0v4si): Ditto.
        (aarch64_crypto_sha256su1v4si): Ditto.
        (doc/invoke.texi): Document new aes and sha2 options.

2018-01-10  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83781
        * gimple-fold.c (get_range_strlen): Avoid treating arrays of pointers
        as string arrays.

2018-01-11  Martin Sebor  <msebor@gmail.com>
            Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/83501
        PR tree-optimization/81703

        * tree-ssa-strlen.c (get_string_cst): Rename...
        (get_string_len): ...to this.  Handle global constants.
        (handle_char_store): Adjust.

2018-01-10  Kito Cheng  <kito.cheng@gmail.com>
            Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv-protos.h (riscv_output_return): New.
        * config/riscv/riscv.c (struct machine_function): New naked_p field.
        (riscv_attribute_table, riscv_output_return),
        (riscv_handle_fndecl_attribute, riscv_naked_function_p),
        (riscv_allocate_stack_slots_for_args, riscv_warn_func_return): New.
        (riscv_compute_frame_info): Only compute frame->mask if not a naked
        function.
        (riscv_expand_prologue): Add early return for naked function.
        (riscv_expand_epilogue): Likewise.
        (riscv_function_ok_for_sibcall): Return false for naked function.
        (riscv_set_current_function): New.
        (TARGET_SET_CURRENT_FUNCTION, TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS),
        (TARGET_ATTRIBUTE_TABLE, TARGET_WARN_FUNC_RETURN): New.
        * config/riscv/riscv.md (simple_return): Call riscv_output_return.
        * doc/extend.texi (RISC-V Function Attributes): New.

2018-01-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (is_complex_IBM_long_double): Explicitly
        check for 128-bit long double before checking TCmode.
        * config/rs6000/rs6000.h (FLOAT128_IEEE_P): Explicitly check for
        128-bit long doubles before checking TFmode or TCmode.
        (FLOAT128_IBM_P): Likewise.

2018-01-10  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83671
        * builtins.c (c_strlen): Unconditionally return zero for the empty
        string.
        Use -Warray-bounds for warnings.
        * gimple-fold.c (get_range_strlen): Handle non-constant lengths
        for non-constant array indices with COMPONENT_REF, arrays of
        arrays, and pointers to arrays.
        (gimple_fold_builtin_strlen): Determine and set length range for
        non-constant character arrays.

2018-01-10  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/81897
        * tree-ssa-uninit.c (convert_control_dep_chain_into_preds): Skip
        empty blocks.

2018-01-10  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (dwarf2out_var_location): Do not pass NULL to fprintf.

2018-01-10  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83399
        * config/rs6000/rs6000.c (print_operand) <'y'>: Use
        VECTOR_MEM_ALTIVEC_OR_VSX_P.
        * config/rs6000/vsx.md (*vsx_le_perm_load_<mode> for VSX_D): Use
        indexed_or_indirect_operand predicate.
        (*vsx_le_perm_load_<mode> for VSX_W): Likewise.
        (*vsx_le_perm_load_v8hi): Likewise.
        (*vsx_le_perm_load_v16qi): Likewise.
        (*vsx_le_perm_store_<mode> for VSX_D): Likewise.
        (*vsx_le_perm_store_<mode> for VSX_W): Likewise.
        (*vsx_le_perm_store_v8hi): Likewise.
        (*vsx_le_perm_store_v16qi): Likewise.
        (eight unnamed splitters): Likewise.

2018-01-10  Peter Bergner  <bergner@vnet.ibm.com>

        * config/rs6000/x86intrin.h: Change #warning to #error. Update message.
        * config/rs6000/emmintrin.h: Likewise.
        * config/rs6000/mmintrin.h: Likewise.
        * config/rs6000/xmmintrin.h: Likewise.

2018-01-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/43486
        * tree-core.h: Document EXPR_LOCATION_WRAPPER_P's usage of
        "public_flag".
        * tree.c (tree_nop_conversion): Return true for location wrapper
        nodes.
        (maybe_wrap_with_location): New function.
        (selftest::check_strip_nops): New function.
        (selftest::test_location_wrappers): New function.
        (selftest::tree_c_tests): Call it.
        * tree.h (STRIP_ANY_LOCATION_WRAPPER): New macro.
        (maybe_wrap_with_location): New decl.
        (EXPR_LOCATION_WRAPPER_P): New macro.
        (location_wrapper_p): New inline function.
        (tree_strip_any_location_wrapper): New inline function.

2018-01-10  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83735
        * config/i386/i386.c (ix86_compute_frame_layout): Always adjust
        stack_realign_offset for the largest alignment of stack slot
        actually used.
        (ix86_find_max_used_stack_alignment): New function.
        (ix86_finalize_stack_frame_flags): Use it.  Set
        max_used_stack_alignment if we don't realign stack.
        * config/i386/i386.h (machine_function): Add
        max_used_stack_alignment.

2018-01-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm.opt (-mbranch-cost): New option.
        * config/arm/arm.h (BRANCH_COST): Take arm_branch_cost into
        account.

2018-01-10  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/83629
        * config/rs6000/rs6000.md (load_toc_v4_PIC_2, load_toc_v4_PIC_3b,
        load_toc_v4_PIC_3c): Wrap const term in CONST RTL.

2018-01-10  Richard Biener  <rguenther@suse.de>

        PR debug/83765
        * dwarf2out.c (gen_subprogram_die): Hoist old_die && declaration
        early out so it also covers the case where we have a non-NULL
        origin.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83753
        * tree-vect-stmts.c (get_group_load_store_type): Use VMAT_CONTIGUOUS
        for non-strided grouped accesses if the number of elements is 1.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

        PR target/81616
        * i386.c (ix86_vectorize_builtin_gather): Check TARGET_USE_GATHER.
        * i386.h (TARGET_USE_GATHER): Define.
        * x86-tune.def (X86_TUNE_USE_GATHER): New.

2018-01-10  Martin Liska  <mliska@suse.cz>

        PR bootstrap/82831
        * basic-block.h (CLEANUP_NO_PARTITIONING): New define.
        * bb-reorder.c (pass_reorder_blocks::execute): Do not clean up
        partitioning.
        * cfgcleanup.c (try_optimize_cfg): Fix up partitioning if
        CLEANUP_NO_PARTITIONING is not set.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi: Remove documentation of (const ...) wrappers
        for vectors, as a partial revert of r254296.
        * rtl.h (const_vec_p): Delete.
        (const_vec_duplicate_p): Don't test for vector CONSTs.
        (unwrap_const_vec_duplicate, const_vec_series_p): Likewise.
        * expmed.c (make_tree): Likewise.

        Revert:
        * common.md (E, F): Use CONSTANT_P instead of checking for
        CONST_VECTOR.
        * emit-rtl.c (gen_lowpart_common): Use const_vec_p instead of
        checking for CONST_VECTOR.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83575
        * predict.c (force_edge_cold): Handle in more sane way edges
        with no prediction.

2018-01-09  Carl Love  <cel@us.ibm.com>

        * config/rs6002/altivec.md (p8_vmrgow): Add support for V2DI, V2DF,
        V4SI, V4SF types.
        (p8_vmrgew): Add support for V2DI, V2DF, V4SF types.
        * config/rs6000/rs6000-builtin.def: Add definitions for FLOAT2_V2DF,
        VMRGEW_V2DI, VMRGEW_V2DF, VMRGEW_V4SF, VMRGOW_V4SI, VMRGOW_V4SF,
        VMRGOW_V2DI, VMRGOW_V2DF.  Remove definition for VMRGOW.
        * config/rs6000/rs6000-c.c (VSX_BUILTIN_VEC_FLOAT2,
        P8V_BUILTIN_VEC_VMRGEW, P8V_BUILTIN_VEC_VMRGOW):  Add definitions.
        * config/rs6000/rs6000-protos.h: Add extern defition for
        rs6000_generate_float2_double_code.
        * config/rs6000/rs6000.c (rs6000_generate_float2_double_code): Add
        function.
        * config/rs6000/vsx.md (vsx_xvcdpsp): Add define_insn.
        (float2_v2df): Add define_expand.

2018-01-09  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * combine.c (force_int_to_mode) <case ASHIFT>: Use mode instead of
        op_mode in the force_to_mode call.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_evpc_trn): Use d.perm.series_p
        instead of checking each element individually.
        (aarch64_evpc_uzp): Likewise.
        (aarch64_evpc_zip): Likewise.
        (aarch64_evpc_ext): Likewise.
        (aarch64_evpc_rev): Likewise.
        (aarch64_evpc_dup): Test the encoding for a single duplicated element,
        instead of checking each element individually.  Return true without
        generating rtl if
        (aarch64_vectorize_vec_perm_const): Use all_from_input_p to test
        whether all selected elements come from the same input, instead of
        checking each element individually.  Remove calls to gen_rtx_REG,
        start_sequence and end_sequence and instead assert that no rtl is
        generated.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_legitimate_constant_p): Fix
        order of HIGH and CONST checks.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (permute_vec_elements): Create a fresh variable
        if the destination isn't an SSA_NAME.

2018-01-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83668
        * graphite.c (canonicalize_loop_closed_ssa): Add edge argument,
        move prologue...
        (canonicalize_loop_form): ... here, renamed from ...
        (canonicalize_loop_closed_ssa_form): ... this and amended to
        swap successor edges for loop exit blocks to make us use
        the RPO order we need for initial schedule generation.

2018-01-09  Joseph Myers  <joseph@codesourcery.com>

        PR tree-optimization/64811
        * match.pd: When optimizing comparisons with Inf, avoid
        introducing or losing exceptions from comparisons with NaN.

2018-01-09  Martin Liska  <mliska@suse.cz>

        PR sanitizer/82517
        * asan.c (shadow_mem_size): Add gcc_assert.

2018-01-09  Georg-Johann Lay  <avr@gjlay.de>

        Don't save registers in main().

        PR target/83738
        * doc/invoke.texi (AVR Options) [-mmain-is-OS_task]: Document it.
        * config/avr/avr.opt (-mmain-is-OS_task): New target option.
        * config/avr/avr.c (avr_set_current_function): Don't error if
        naked, OS_task or OS_main are specified at the same time.
        (avr_function_ok_for_sibcall): Don't disable sibcalls for OS_task,
        OS_main.
        (avr_insert_attributes) [-mmain-is-OS_task] <main>: Add OS_task
        attribute.
        * common/config/avr/avr-common.c (avr_option_optimization_table):
        Switch on -mmain-is-OS_task for optimizing compilations.

2018-01-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83572
        * graphite.c: Include cfganal.h.
        (graphite_transform_loops): Connect infinite loops to exit
        and remove fake edges at the end.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-inline.c (edge_badness): Revert accidental checkin.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/80763
        * ipa-comdats.c (set_comdat_group): Only set comdat group of real
        symbols; not inline clones.

2018-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR target/83507
        * modulo-sched.c (schedule_reg_moves): Punt if we'd need to move
        hard registers.  Formatting fixes.

        PR preprocessor/83722
        * gcc.c (try_generate_repro): Pass
        &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1] rather than
        &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1] as last argument to
        do_report_bug.

2018-01-08  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/riscv.c (machine_function::is_leaf): Remove field.
        (riscv_leaf_function_p): Delete.
        (riscv_function_ok_for_sibcall): Return false when TARGET_SAVE_RESTORE.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
        function.
        (do_ifelse): New function.
        (do_isel): New function.
        (do_sub3): New function.
        (do_add3): New function.
        (do_load_mask_compare): New function.
        (do_overlap_load_compare): New function.
        (expand_compare_loop): New function.
        (expand_block_compare): Call expand_compare_loop() when appropriate.
        * config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
        option description.
        (-mblock-compare-inline-loop-limit): New option.

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR target/83677
        * config/rs6000/altivec.md (*altivec_vpermr_<mode>_internal):
        Reverse order of second and third operands in first alternative.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set): Reverse order
        of first and second elements in UNSPEC_VPERMR vector.
        (altivec_expand_vec_perm_le): Likewise.

2018-01-08  Jeff Law  <law@redhat.com>

        PR rtl-optimizatin/81308
        * tree-switch-conversion.c (cfg_altered): New file scoped static.
        (process_switch): If group_case_labels makes a change, then set
        cfg_altered.
        (pass_convert_switch::execute): If a switch is converted, then
        set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

        PR rtl-optimization/81308
        * recog.c (split_all_insns): Conditionally cleanup the CFG after
        splitting insns.

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

        PR target/83663 - Revert r255946
        * config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify code
        generation for cases where splatting a value is not useful.
        * simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge
        across a vec_duplicate and a paradoxical subreg forming a vector
        mode to a vec_concat.

2018-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/t-aprofile (MULTILIB_MATCHES): Add mapping rules for
        -march=armv8.3-a variants.
        * config/arm/t-multilib: Likewise.
        * config/arm/t-arm-elf: Likewise.  Handle dotprod extension.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (cceq_ior_compare): Remove * so I can use it
        to generate rtl.
        (cceq_ior_compare_complement): Give it a name so I can use it, and
        change boolean_or_operator predicate to boolean_operator so it can
        be used to generate a crand.
        (eqne): New code iterator.
        (bd/bd_neg): New code_attrs.
        (<bd>_<mode>): New name for ctr<mode>_internal[12] now combined into
        a single define_insn.
        (<bd>tf_<mode>): A new insn pattern for the conditional form branch
        decrement (bdnzt/bdnzf/bdzt/bdzf).
        * config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
        with the new names of the branch decrement patterns, and added the
        names of the branch decrement conditional patterns.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83563
        * graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV
        cache.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83713
        * convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83685
        * tree-ssa-pre.c (create_expression_by_pieces): Do not insert
        references to abnormals.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR lto/83719
        * dwarf2out.c (output_indirect_strings): Handle empty
        skeleton_debug_str_hash.
        (dwarf2out_early_finish): Index strings for -gsplit-dwarf.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (TARGET_TRAMPOLINE_ADJUST_ADDRESS): Delete.
        (emit_store_direct): Likewise.
        (arc_trampoline_adjust_address): Likewise.
        (arc_asm_trampoline_template): New function.
        (arc_initialize_trampoline): Use asm_trampoline_template.
        (TARGET_ASM_TRAMPOLINE_TEMPLATE): Define.
        * config/arc/arc.h (TRAMPOLINE_SIZE): Adjust to 16.
        * config/arc/arc.md (flush_icache): Delete pattern.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-c.def (__ARC_UNALIGNED__): New define.
        * config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using
        munaligned-access.

2018-01-08  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        PR target/83681
        * config/epiphany/epiphany.h (make_pass_mode_switch_use): Guard
        by not USED_FOR_TARGET.
        (make_pass_resolve_sw_modes): Likewise.

2018-01-08  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/nios2.h (nios2_section_threshold): Guard by not
        USED_FOR_TARGET.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83580
        * tree-data-ref.c (split_constant_offset): Remove STRIP_NOPS.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83517
        * match.pd ((t * 2) / 2) -> t): Add missing :c.

2018-01-06  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/81897
        * tree-ssa-uninit.c (compute_control_dep_chain): Do not bail on
        basic blocks with a small number of successors.
        (convert_control_dep_chain_into_preds): Improve handling of
        forwarder blocks.
        (dump_predicates): Split apart into...
        (dump_pred_chain): ...here...
        (dump_pred_info): ...and here.
        (can_one_predicate_be_invalidated_p): Add debugging printfs.
        (can_chain_union_be_invalidated_p): Improve check for invalidation
        of paths.
        (uninit_uses_cannot_happen): Avoid unnecessary if
        convert_control_dep_chain_into_preds yielded nothing.

2018-01-06  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83640
        * gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Avoid
        subtracting negative offset from size.
        (builtin_access::overlap): Adjust offset bounds of the access to fall
        within the size of the object if possible.

2018-01-06  Richard Sandiford  <richard.sandiford@linaro.org>

        PR rtl-optimization/83699
        * expmed.c (extract_bit_field_1): Restrict the vector usage of
        extract_bit_field_as_subreg to cases in which the extracted
        value is also a vector.

        * lra-constraints.c (process_alt_operands): Test for the equivalence
        substitutions when detecting a possible reload cycle.

2018-01-06  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83480
        * toplev.c (process_options): Don't enable debug_nonbind_markers_p
        by default if flag_selective_schedling{,2}.  Formatting fixes.

        PR rtl-optimization/83682
        * rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
        if it has non-VECTOR_MODE element mode.
        (vec_duplicate_p): Likewise.

        PR middle-end/83694
        * cfgexpand.c (expand_debug_expr): Punt if mode1 is VOIDmode
        and bitsize might be greater than MAX_BITSIZE_MODE_ANY_INT.

2018-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/83604
        * config/i386/i386-builtin.def
        (__builtin_ia32_vgf2p8affineinvqb_v64qi,
        __builtin_ia32_vgf2p8affineqb_v64qi, __builtin_ia32_vgf2p8mulb_v64qi):
        Require also OPTION_MASK_ISA_AVX512F in addition to
        OPTION_MASK_ISA_GFNI.
        (__builtin_ia32_vgf2p8affineinvqb_v16qi_mask,
        __builtin_ia32_vgf2p8affineqb_v16qi_mask): Require
        OPTION_MASK_ISA_AVX512VL instead of OPTION_MASK_ISA_SSE in addition
        to OPTION_MASK_ISA_GFNI.
        (__builtin_ia32_vgf2p8mulb_v32qi_mask): Require
        OPTION_MASK_ISA_AVX512VL in addition to OPTION_MASK_ISA_GFNI and
        OPTION_MASK_ISA_AVX512BW.
        (__builtin_ia32_vgf2p8mulb_v16qi_mask): Require
        OPTION_MASK_ISA_AVX512VL instead of OPTION_MASK_ISA_AVX512BW in
        addition to OPTION_MASK_ISA_GFNI.
        (__builtin_ia32_vgf2p8affineinvqb_v16qi,
        __builtin_ia32_vgf2p8affineqb_v16qi, __builtin_ia32_vgf2p8mulb_v16qi):
        Require OPTION_MASK_ISA_SSE2 instead of OPTION_MASK_ISA_SSE in addition
        to OPTION_MASK_ISA_GFNI.
        * config/i386/i386.c (def_builtin): Change to builtin isa/isa2 being
        a requirement for all ISAs rather than any of them with a few
        exceptions.
        (ix86_add_new_builtins): Clear OPTION_MASK_ISA_64BIT from isa before
        processing.
        (ix86_expand_builtin): Require all ISAs from builtin's isa and isa2
        bitmasks to be enabled with 3 exceptions, instead of requiring any
        enabled ISA with lots of exceptions.
        * config/i386/sse.md (vgf2p8affineinvqb_<mode><mask_name>,
        vgf2p8affineqb_<mode><mask_name>, vgf2p8mulb_<mode><mask_name>):
        Change avx512bw in isa attribute to avx512f.
        * config/i386/sgxintrin.h: Add license boilerplate.
        * config/i386/vaesintrin.h: Likewise.  Fix macro spelling __AVX512F
        to __AVX512F__ and __AVX512VL to __AVX512VL__.
        (_mm256_aesdec_epi128, _mm256_aesdeclast_epi128, _mm256_aesenc_epi128,
        _mm256_aesenclast_epi128): Enable temporarily avx if __AVX__ is not
        defined.
        * config/i386/gfniintrin.h (_mm_gf2p8mul_epi8,
        _mm_gf2p8affineinv_epi64_epi8, _mm_gf2p8affine_epi64_epi8): Enable
        temporarily sse2 rather than sse if not enabled already.

        PR target/83604
        * config/i386/sse.md (VI248_VLBW): Rename to ...
        (VI248_AVX512VL): ... this.  Don't guard V32HI with TARGET_AVX512BW.
        (vpshrd_<mode><mask_name>, vpshld_<mode><mask_name>,
        vpshrdv_<mode>, vpshrdv_<mode>_mask, vpshrdv_<mode>_maskz,
        vpshrdv_<mode>_maskz_1, vpshldv_<mode>, vpshldv_<mode>_mask,
        vpshldv_<mode>_maskz, vpshldv_<mode>_maskz_1): Use VI248_AVX512VL
        mode iterator instead of VI248_VLBW.

2018-01-05  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-fnsummary.c (record_modified_bb_info): Add OP.
        (record_modified): Skip clobbers; add debug output.
        (param_change_prob): Use sreal frequencies.

2018-01-05  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Don't
        punt for user-aligned variables.

2018-01-05  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-chrec.c (chrec_contains_symbols): Return true for
        POLY_INT_CST.

2018-01-05  Sudakshina Das  <sudi.das@arm.com>

        PR target/82439
        * simplify-rtx.c (simplify_relational_operation_1): Add simplifications
        of (x|y) == x for BICS pattern.

2018-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/83605
        * gimple-ssa-strength-reduction.c: Include tree-eh.h.
        (find_candidates_dom_walker::before_dom_children): Ignore stmts that
        can throw.

2018-01-05  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config.gcc (epiphany-*-elf*): Add (epiphany-*-rtems*) configuration.
        * config/epiphany/rtems.h: New file.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>
            Uros Bizjak  <ubizjak@gmail.com>

        PR target/83554
        * config/i386/i386.md (*<rotate_insn>hi3_1 splitter): Use
        QIreg_operand instead of register_operand predicate.
        * config/i386/i386.c (ix86_rop_should_change_byte_p,
        set_rop_modrm_reg_bits, ix86_mitigate_rop): Use -mmitigate-rop in
        comments instead of -fmitigate[-_]rop.

2018-01-04  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR bootstrap/81926
        * cgraphunit.c (symbol_table::compile): Switch to text_section
        before calling assembly_start debug hook.
        * run-rtl-passes.c (run_rtl_passes): Likewise.
        Include output.h.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vrp.c (extract_range_from_binary_expr_1): Check
        range_int_cst_p rather than !symbolic_range_p before calling
        extract_range_from_multiplicative_op_1.

2018-01-04  Jeff Law  <law@redhat.com>

        * tree-ssa-math-opts.c (execute_cse_reciprocals_1): Remove
        redundant test in assertion.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi: Document machine_mode wrapper classes.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * fold-const.c (fold_ternary_loc): Check tree_fits_uhwi_p before
        using tree_to_uhwi.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-ssa-forwprop.c (is_combined_permutation_identity): Allow
        the VEC_PERM_EXPR fold to fail.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83585
        * bb-reorder.c (insert_section_boundary_note): Set has_bb_partition
        to switched_sections.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        PR target/83680
        * config/arm/arm.c (arm_vectorize_vec_perm_const): Fix inverted
        test for d.testing.

2018-01-04  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83387
        * config/rs6000/rs6000.c (rs6000_discover_homogeneous_aggregate): Do not
        allow arguments in FP registers if TARGET_HARD_FLOAT is false.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83666
        * cfgexpand.c (expand_debug_expr) <case BIT_FIELD_REF>: Punt if mode
        is BLKmode and bitpos not zero or mode change is needed.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        PR target/83675
        * config/sparc/sparc.c (sparc_vectorize_vec_perm_const): Require
        TARGET_VIS2.

2018-01-04  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * config/alpha/alpha.md (*sadd<modesuffix>): Use ASHIFT
        instead of MULT rtx.  Update all corresponding splitters.
        (*saddl_se): Ditto.
        (*ssub<modesuffix>): Ditto.
        (*ssubl_se): Ditto.
        (*cmp_sadd_di): Update split patterns.
        (*cmp_sadd_si): Ditto.
        (*cmp_sadd_sidi): Ditto.
        (*cmp_ssub_di): Ditto.
        (*cmp_ssub_si): Ditto.
        (*cmp_ssub_sidi): Ditto.
        * config/alpha/predicates.md (const23_operand): New predicate.
        * config/alpha/alpha.c (alpha_rtx_costs) [PLUS, MINUS]:
        Look for ASHIFT, not MULT inner operand.
        (alpha_split_conditional_move): Update for *sadd<modesuffix> change.

2018-01-04  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83669
        * gcov.c (output_intermediate_file): Add version to intermediate
        gcov file.
        * doc/gcov.texi: Document new field 'version' in intermediate
        file format. Fix location of '-k' option of gcov command.

2018-01-04  Martin Liska  <mliska@suse.cz>

        PR ipa/82352
        * ipa-icf.c (sem_function::merge): Do not cross comdat boundary.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

        * gimple-ssa-sprintf.c (parse_directive): Cast second dir.len to uhwi.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83655
        * gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call): Avoid
        checking calls with invalid arguments.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_get_store_rhs): New function.
        (vectorizable_mask_load_store): Delete.
        (vectorizable_call): Return false for masked loads and stores.
        (vectorizable_store): Handle IFN_MASK_STORE.  Use vect_get_store_rhs
        instead of gimple_assign_rhs1.
        (vectorizable_load): Handle IFN_MASK_LOAD.
        (vect_transform_stmt): Don't set is_store for call_vec_info_type.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_build_gather_load_calls): New function,
        split out from..,
        (vectorizable_mask_load_store): ...here.
        (vectorizable_load): ...and here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_build_all_ones_mask)
        (vect_build_zero_merge_argument): New functions, split out from...
        (vectorizable_load): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_check_store_rhs): New function,
        split out from...
        (vectorizable_mask_load_store): ...here.
        (vectorizable_store): ...and here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_check_load_store_mask): New function,
        split out from...
        (vectorizable_mask_load_store): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vectorizer.h (vec_load_store_type): Moved from tree-vec-stmts.c
        (vect_model_store_cost): Take a vec_load_store_type instead of a
        vect_def_type.
        * tree-vect-stmts.c (vec_load_store_type): Move to tree-vectorizer.h.
        (vect_model_store_cost): Take a vec_load_store_type instead of a
        vect_def_type.
        (vectorizable_mask_load_store): Update accordingly.
        (vectorizable_store): Likewise.
        * tree-vect-slp.c (vect_analyze_slp_cost_1): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-loop.c (vect_transform_loop): Stub out scalar
        IFN_MASK_LOAD calls here rather than...
        * tree-vect-stmts.c (vectorizable_mask_load_store): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expmed.c (extract_bit_field_1): For vector extracts,
        fall back to extract_bit_field_as_subreg if vec_extract
        isn't available.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * lra-spills.c (pseudo_reg_slot_compare): Sort slots by whether
        they are variable or constant sized.
        (assign_stack_slot_num_and_sort_pseudos): Don't reuse variable-sized
        slots for constant-sized data.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-patterns.c (vect_recog_mask_conversion_pattern): When
        handling COND_EXPRs with boolean comparisons, try to find a better
        basis for the mask type than the boolean itself.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi (MAX_BITSIZE_MODE_ANY_MODE): Describe how the default
        is calculated and how it can be overridden.
        * genmodes.c (max_bitsize_mode_any_mode): New variable.
        (create_modes): Initialize it from MAX_BITSIZE_MODE_ANY_MODE,
        if defined.
        (emit_max_int): Use it to set the output MAX_BITSIZE_MODE_ANY_MODE,
        if nonzero.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-protos.h (aarch64_output_simd_mov_immediate):
        Remove the mode argument.
        (aarch64_simd_valid_immediate): Remove the mode and inverse
        arguments.
        * config/aarch64/iterators.md (bitsize): New iterator.
        * config/aarch64/aarch64-simd.md (*aarch64_simd_mov<mode>, and<mode>3)
        (ior<mode>3): Update calls to aarch64_output_simd_mov_immediate.
        * config/aarch64/constraints.md (Do, Db, Dn): Update calls to
        aarch64_simd_valid_immediate.
        * config/aarch64/predicates.md (aarch64_reg_or_orr_imm): Likewise.
        (aarch64_reg_or_bic_imm): Likewise.
        * config/aarch64/aarch64.c (simd_immediate_info): Replace mvn
        with an insn_type enum and msl with a modifier_type enum.
        Replace element_width with a scalar_mode.  Change the shift
        to unsigned int.  Add constructors for scalar_float_mode and
        scalar_int_mode elements.
        (aarch64_vect_float_const_representable_p): Delete.
        (aarch64_can_const_movi_rtx_p)
        (aarch64_simd_scalar_immediate_valid_for_move)
        (aarch64_simd_make_constant): Update call to
        aarch64_simd_valid_immediate.
        (aarch64_advsimd_valid_immediate_hs): New function.
        (aarch64_advsimd_valid_immediate): Likewise.
        (aarch64_simd_valid_immediate): Remove mode and inverse
        arguments.  Rewrite to use the above.  Use const_vec_duplicate_p
        to detect duplicated constants and use aarch64_float_const_zero_rtx_p
        and aarch64_float_const_representable_p on the result.
        (aarch64_output_simd_mov_immediate): Remove mode argument.
        Update call to aarch64_simd_valid_immediate and use of
        simd_immediate_info.
        (aarch64_output_scalar_simd_mov_immediate): Update call
        accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_precision): Prefix with CONST_MODE_PRECISION.
        (mode_nunits): Likewise CONST_MODE_NUNITS.
        * machmode.def (ADJUST_NUNITS): Document.
        * genmodes.c (mode_data::need_nunits_adj): New field.
        (blank_mode): Update accordingly.
        (adj_nunits): New variable.
        (print_maybe_const_decl): Replace CATEGORY with a NEEDS_ADJ
        parameter.
        (emit_mode_size_inline): Set need_bytesize_adj for all modes
        listed in adj_nunits.
        (emit_mode_nunits_inline): Set need_nunits_adj for all modes
        listed in adj_nunits.  Don't emit case statements for such modes.
        (emit_insn_modes_h): Emit definitions of CONST_MODE_NUNITS
        and CONST_MODE_PRECISION.  Make CONST_MODE_SIZE expand to
        nothing if adj_nunits is nonnull.
        (emit_mode_precision, emit_mode_nunits): Use print_maybe_const_decl.
        (emit_mode_unit_size, emit_mode_base_align, emit_mode_ibit)
        (emit_mode_fbit): Update use of print_maybe_const_decl.
        (emit_move_size): Likewise.  Treat the array as non-const
        if adj_nunits.
        (emit_mode_adjustments): Handle adj_nunits.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * machmode.def (VECTOR_MODES_WITH_PREFIX): Document.
        * genmodes.c (VECTOR_MODES_WITH_PREFIX): New macro.
        (VECTOR_MODES): Use it.
        (make_vector_modes): Take the prefix as an argument.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * mode-classes.def (MODE_VECTOR_BOOL): New mode class.
        * machmode.h (INTEGRAL_MODE_P, VECTOR_MODE_P): Return true
        for MODE_VECTOR_BOOL.
        * machmode.def (VECTOR_BOOL_MODE): Document.
        * genmodes.c (VECTOR_BOOL_MODE): New macro.
        (make_vector_bool_mode): New function.
        (complete_mode, emit_mode_wider, emit_mode_adjustments): Handle
        MODE_VECTOR_BOOL.
        * lto-streamer-in.c (lto_input_mode_table): Likewise.
        * rtx-vector-builder.c (rtx_vector_builder::find_cached_value):
        Likewise.
        * stor-layout.c (int_mode_for_mode): Likewise.
        * tree.c (build_vector_type_for_mode): Likewise.
        * varasm.c (output_constant_pool_2): Likewise.
        * emit-rtl.c (init_emit_once): Make sure that CONST1_RTX (BImode) and
        CONSTM1_RTX (BImode) are the same thing.  Initialize const_tiny_rtx
        for MODE_VECTOR_BOOL.
        * expr.c (expand_expr_real_1): Use VECTOR_MODE_P instead of a list
        of mode class checks.
        * tree-vect-generic.c (expand_vector_operation): Use VECTOR_MODE_P
        instead of a list of mode class checks.
        (expand_vector_scalar_condition): Likewise.
        (type_for_widest_vector_mode): Handle BImode as an inner mode.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_size): Change from unsigned short to
        poly_uint16_pod.
        (mode_to_bytes): Return a poly_uint16 rather than an unsigned short.
        (GET_MODE_SIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is not polynomial.
        (fixed_size_mode::includes_p): Check for constant-sized modes.
        * genmodes.c (emit_mode_size_inline): Make mode_size_inline
        return a poly_uint16 rather than an unsigned short.
        (emit_mode_size): Change the type of mode_size from unsigned short
        to poly_uint16_pod.  Use ZERO_COEFFS for the initializer.
        (emit_mode_adjustments): Cope with polynomial vector sizes.
        * lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
        for GET_MODE_SIZE.
        * lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
        for GET_MODE_SIZE.
        * auto-inc-dec.c (try_merge): Treat GET_MODE_SIZE as polynomial.
        * builtins.c (expand_ifn_atomic_compare_exchange_into_call): Likewise.
        * caller-save.c (setup_save_areas): Likewise.
        (replace_reg_with_saved_mem): Likewise.
        * calls.c (emit_library_call_value_1): Likewise.
        * combine-stack-adj.c (combine_stack_adjustments_for_block): Likewise.
        * combine.c (simplify_set, make_extraction, simplify_shift_const_1)
        (gen_lowpart_for_combine): Likewise.
        * convert.c (convert_to_integer_1): Likewise.
        * cse.c (equiv_constant, cse_insn): Likewise.
        * cselib.c (autoinc_split, cselib_hash_rtx): Likewise.
        (cselib_subst_to_values): Likewise.
        * dce.c (word_dce_process_block): Likewise.
        * df-problems.c (df_word_lr_mark_ref): Likewise.
        * dwarf2cfi.c (init_one_dwarf_reg_size): Likewise.
        * dwarf2out.c (multiple_reg_loc_descriptor, mem_loc_descriptor)
        (concat_loc_descriptor, concatn_loc_descriptor, loc_descriptor)
        (rtl_for_decl_location): Likewise.
        * emit-rtl.c (gen_highpart, widen_memory_access): Likewise.
        * expmed.c (extract_bit_field_1, extract_integral_bit_field): Likewise.
        * expr.c (emit_group_load_1, clear_storage_hints): Likewise.
        (emit_move_complex, emit_move_multi_word, emit_push_insn): Likewise.
        (expand_expr_real_1): Likewise.
        * function.c (assign_parm_setup_block_p, assign_parm_setup_block)
        (pad_below): Likewise.
        * gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
        * gimple-ssa-store-merging.c (rhs_valid_for_store_merging_p): Likewise.
        * ira.c (get_subreg_tracking_sizes): Likewise.
        * ira-build.c (ira_create_allocno_objects): Likewise.
        * ira-color.c (coalesced_pseudo_reg_slot_compare): Likewise.
        (ira_sort_regnos_for_alter_reg): Likewise.
        * ira-costs.c (record_operand_costs): Likewise.
        * lower-subreg.c (interesting_mode_p, simplify_gen_subreg_concatn)
        (resolve_simple_move): Likewise.
        * lra-constraints.c (get_reload_reg, operands_match_p): Likewise.
        (process_addr_reg, simplify_operand_subreg, curr_insn_transform)
        (lra_constraints): Likewise.
        (CONST_POOL_OK_P): Reject variable-sized modes.
        * lra-spills.c (slot, assign_mem_slot, pseudo_reg_slot_compare)
        (add_pseudo_to_slot, lra_spill): Likewise.
        * omp-low.c (omp_clause_aligned_alignment): Likewise.
        * optabs-query.c (get_best_extraction_insn): Likewise.
        * optabs-tree.c (expand_vec_cond_expr_p): Likewise.
        * optabs.c (expand_vec_perm_var, expand_vec_cond_expr): Likewise.
        (expand_mult_highpart, valid_multiword_target_p): Likewise.
        * recog.c (offsettable_address_addr_space_p): Likewise.
        * regcprop.c (maybe_mode_change): Likewise.
        * reginfo.c (choose_hard_reg_mode, record_subregs_of_mode): Likewise.
        * regrename.c (build_def_use): Likewise.
        * regstat.c (dump_reg_info): Likewise.
        * reload.c (complex_word_subreg_p, push_reload, find_dummy_reload)
        (find_reloads, find_reloads_subreg_address): Likewise.
        * reload1.c (eliminate_regs_1): Likewise.
        * rtlanal.c (for_each_inc_dec_find_inc_dec, rtx_cost): Likewise.
        * simplify-rtx.c (avoid_constant_pool_reference): Likewise.
        (simplify_binary_operation_1, simplify_subreg): Likewise.
        * targhooks.c (default_function_arg_padding): Likewise.
        (default_hard_regno_nregs, default_class_max_nregs): Likewise.
        * tree-cfg.c (verify_gimple_assign_binary): Likewise.
        (verify_gimple_assign_ternary): Likewise.
        * tree-inline.c (estimate_move_cost): Likewise.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        * tree-ssa-loop-ivopts.c (add_autoinc_candidates): Likewise.
        (get_address_cost_ainc): Likewise.
        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Likewise.
        (vect_supportable_dr_alignment): Likewise.
        * tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
        (vectorizable_reduction): Likewise.
        * tree-vect-stmts.c (vectorizable_assignment, vectorizable_shift)
        (vectorizable_operation, vectorizable_load): Likewise.
        * tree.c (build_same_sized_truth_vector_type): Likewise.
        * valtrack.c (cleanup_auto_inc_dec): Likewise.
        * var-tracking.c (emit_note_insn_var_location): Likewise.
        * config/arc/arc.h (ASM_OUTPUT_CASE_END): Use as_a <scalar_int_mode>.
        (ADDR_VEC_ALIGN): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_to_bits): Return a poly_uint16 rather than an
        unsigned short.
        (GET_MODE_BITSIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is polynomial.
        * calls.c (shift_return_value): Treat GET_MODE_BITSIZE as polynomial.
        * combine.c (make_extraction): Likewise.
        * dse.c (find_shift_sequence): Likewise.
        * dwarf2out.c (mem_loc_descriptor): Likewise.
        * expmed.c (store_integral_bit_field, extract_bit_field_1): Likewise.
        (extract_bit_field, extract_low_bits): Likewise.
        * expr.c (convert_move, convert_modes, emit_move_insn_1): Likewise.
        (optimize_bitfield_assignment_op, expand_assignment): Likewise.
        (store_expr_with_bounds, store_field, expand_expr_real_1): Likewise.
        * fold-const.c (optimize_bit_field_compare, merge_ranges): Likewise.
        * gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
        * reload.c (find_reloads): Likewise.
        * reload1.c (alter_reg): Likewise.
        * stor-layout.c (bitwise_mode_for_mode, compute_record_mode): Likewise.
        * targhooks.c (default_secondary_memory_needed_mode): Likewise.
        * tree-if-conv.c (predicate_mem_writes): Likewise.
        * tree-ssa-strlen.c (handle_builtin_memcmp): Likewise.
        * tree-vect-patterns.c (adjust_bool_pattern): Likewise.
        * tree-vect-stmts.c (vectorizable_simd_clone_call): Likewise.
        * valtrack.c (dead_debug_insert_temp): Likewise.
        * varasm.c (mergeable_constant_section): Likewise.
        * config/sh/sh.h (LOCAL_ALIGNMENT): Use as_a <fixed_size_mode>.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_assignment): Cope with polynomial mode sizes
        when assigning to a CONCAT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_precision): Change from unsigned short to
        poly_uint16_pod.
        (mode_to_precision): Return a poly_uint16 rather than an unsigned
        short.
        (GET_MODE_PRECISION): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is not polynomial.
        (HWI_COMPUTABLE_MODE_P): Turn into a function.  Optimize the case
        in which the mode is already known to be a scalar_int_mode.
        * genmodes.c (emit_mode_precision): Change the type of mode_precision
        from unsigned short to poly_uint16_pod.  Use ZERO_COEFFS for the
        initializer.
        * lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
        for GET_MODE_PRECISION.
        * lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
        for GET_MODE_PRECISION.
        * combine.c (update_rsp_from_reg_equal): Treat GET_MODE_PRECISION
        as polynomial.
        (try_combine, find_split_point, combine_simplify_rtx): Likewise.
        (expand_field_assignment, make_extraction): Likewise.
        (make_compound_operation_int, record_dead_and_set_regs_1): Likewise.
        (get_last_value): Likewise.
        * convert.c (convert_to_integer_1): Likewise.
        * cse.c (cse_insn): Likewise.
        * expr.c (expand_expr_real_1): Likewise.
        * lra-constraints.c (simplify_operand_subreg): Likewise.
        * optabs-query.c (can_atomic_load_p): Likewise.
        * optabs.c (expand_atomic_load): Likewise.
        (expand_atomic_store): Likewise.
        * ree.c (combine_reaching_defs): Likewise.
        * rtl.h (partial_subreg_p, paradoxical_subreg_p): Likewise.
        * rtlanal.c (nonzero_bits1, lsb_bitfield_op_p): Likewise.
        * tree.h (type_has_mode_precision_p): Likewise.
        * ubsan.c (instrument_si_overflow): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree.h (TYPE_VECTOR_SUBPARTS): Turn into a function and handle
        polynomial numbers of units.
        (SET_TYPE_VECTOR_SUBPARTS): Likewise.
        (valid_vector_subparts_p): New function.
        (build_vector_type): Remove temporary shim and take the number
        of units as a poly_uint64 rather than an int.
        (build_opaque_vector_type): Take the number of units as a
        poly_uint64 rather than an int.
        * tree.c (build_vector_from_ctor): Handle polynomial
        TYPE_VECTOR_SUBPARTS.
        (type_hash_canon_hash, type_cache_hasher::equal): Likewise.
        (uniform_vector_p, vector_type_mode, build_vector): Likewise.
        (build_vector_from_val): If the number of units is variable,
        use build_vec_duplicate_cst for constant operands and
        VEC_DUPLICATE_EXPR otherwise.
        (make_vector_type): Remove temporary is_constant ().
        (build_vector_type, build_opaque_vector_type): Take the number of
        units as a poly_uint64 rather than an int.
        (check_vector_cst): Handle polynomial TYPE_VECTOR_SUBPARTS and
        VECTOR_CST_NELTS.
        * cfgexpand.c (expand_debug_expr): Likewise.
        * expr.c (count_type_elements, categorize_ctor_elements_1): Likewise.
        (store_constructor, expand_expr_real_1): Likewise.
        (const_scalar_mask_from_tree): Likewise.
        * fold-const-call.c (fold_const_reduction): Likewise.
        * fold-const.c (const_binop, const_unop, fold_convert_const): Likewise.
        (operand_equal_p, fold_vec_perm, fold_ternary_loc): Likewise.
        (native_encode_vector, vec_cst_ctor_to_array): Likewise.
        (fold_relational_const): Likewise.
        (native_interpret_vector): Likewise.  Change the size from an
        int to an unsigned int.
        * gimple-fold.c (gimple_fold_stmt_to_constant_1): Handle polynomial
        TYPE_VECTOR_SUBPARTS.
        (gimple_fold_indirect_ref, gimple_build_vector): Likewise.
        (gimple_build_vector_from_val): Use VEC_DUPLICATE_EXPR when
        duplicating a non-constant operand into a variable-length vector.
        * hsa-brig.c (hsa_op_immed::emit_to_buffer): Handle polynomial
        TYPE_VECTOR_SUBPARTS and VECTOR_CST_NELTS.
        * ipa-icf.c (sem_variable::equals): Likewise.
        * match.pd: Likewise.
        * omp-simd-clone.c (simd_clone_subparts): Likewise.
        * print-tree.c (print_node): Likewise.
        * stor-layout.c (layout_type): Likewise.
        * targhooks.c (default_builtin_vectorization_cost): Likewise.
        * tree-cfg.c (verify_gimple_comparison): Likewise.
        (verify_gimple_assign_binary): Likewise.
        (verify_gimple_assign_ternary): Likewise.
        (verify_gimple_assign_single): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        (simplify_bitfield_ref, is_combined_permutation_identity): Likewise.
        * tree-vect-data-refs.c (vect_permute_store_chain): Likewise.
        (vect_grouped_load_supported, vect_permute_load_chain): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        * tree-vect-generic.c (nunits_for_known_piecewise_op): Likewise.
        (expand_vector_condition, optimize_vector_constructor): Likewise.
        (lower_vec_perm, get_compute_type): Likewise.
        * tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
        (get_initial_defs_for_reduction, vect_transform_loop): Likewise.
        * tree-vect-patterns.c (vect_recog_bool_pattern): Likewise.
        (vect_recog_mask_conversion_pattern): Likewise.
        * tree-vect-slp.c (vect_supported_load_permutation_p): Likewise.
        (vect_get_constant_vectors, vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (get_group_load_store_type, vectorizable_mask_load_store): Likewise.
        (vectorizable_bswap, simd_clone_subparts, vectorizable_assignment)
        (vectorizable_shift, vectorizable_operation, vectorizable_store)
        (vectorizable_load, vect_is_simple_cond, vectorizable_comparison)
        (supportable_widening_operation): Likewise.
        (supportable_narrowing_operation): Likewise.
        * tree-vector-builder.c (tree_vector_builder::binary_encoded_nelts):
        Likewise.
        * varasm.c (output_constant): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vect_permute_store_chain): Reorganize
        so that both the length == 3 and length != 3 cases set up their
        own permute vectors.  Add comments explaining why we know the
        number of elements is constant.
        (vect_permute_load_chain): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_nunits): Change from unsigned char to
        poly_uint16_pod.
        (ONLY_FIXED_SIZE_MODES): New macro.
        (pod_mode::measurement_type, scalar_int_mode::measurement_type)
        (scalar_float_mode::measurement_type, scalar_mode::measurement_type)
        (complex_mode::measurement_type, fixed_size_mode::measurement_type):
        New typedefs.
        (mode_to_nunits): Return a poly_uint16 rather than an unsigned short.
        (GET_MODE_NUNITS): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is not polynomial.
        * genmodes.c (ZERO_COEFFS): New macro.
        (emit_mode_nunits_inline): Make mode_nunits_inline return a
        poly_uint16.
        (emit_mode_nunits): Change the type of mode_nunits to poly_uint16_pod.
        Use ZERO_COEFFS when emitting initializers.
        * data-streamer.h (bp_pack_poly_value): New function.
        (bp_unpack_poly_value): Likewise.
        * lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
        for GET_MODE_NUNITS.
        * lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
        for GET_MODE_NUNITS.
        * tree.c (make_vector_type): Remove temporary shim and make
        the real function take the number of units as a poly_uint64
        rather than an int.
        (build_vector_type_for_mode): Handle polynomial nunits.
        * dwarf2out.c (loc_descriptor, add_const_value_attribute): Likewise.
        * emit-rtl.c (const_vec_series_p_1): Likewise.
        (gen_rtx_CONST_VECTOR): Likewise.
        * fold-const.c (test_vec_duplicate_folding): Likewise.
        * genrecog.c (validate_pattern): Likewise.
        * optabs-query.c (can_vec_perm_var_p, can_mult_highpart_p): Likewise.
        * optabs-tree.c (expand_vec_cond_expr_p): Likewise.
        * optabs.c (expand_vector_broadcast, expand_binop_directly): Likewise.
        (shift_amt_for_vec_perm_mask, expand_vec_perm_var): Likewise.
        (expand_vec_cond_expr, expand_mult_highpart): Likewise.
        * rtlanal.c (subreg_get_info): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
        (vect_grouped_load_supported): Likewise.
        * tree-vect-generic.c (type_for_widest_vector_mode): Likewise.
        * tree-vect-loop.c (have_whole_vector_shift): Likewise.
        * simplify-rtx.c (simplify_unary_operation_1): Likewise.
        (simplify_const_unary_operation, simplify_binary_operation_1)
        (simplify_const_binary_operation, simplify_ternary_operation)
        (test_vector_ops_duplicate, test_vector_ops): Likewise.
        (simplify_immed_subreg): Use GET_MODE_NUNITS on a fixed_size_mode
        instead of CONST_VECTOR_NUNITS.
        * varasm.c (output_constant_pool_2): Likewise.
        * rtx-vector-builder.c (rtx_vector_builder::build): Only include the
        explicit-encoded elements in the XVEC for variable-length vectors.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (curr_insn_transform): Use partial_subreg_p.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * coretypes.h (fixed_size_mode): Declare.
        (fixed_size_mode_pod): New typedef.
        * builtins.h (target_builtins::x_apply_args_mode)
        (target_builtins::x_apply_result_mode): Change type to
        fixed_size_mode_pod.
        * builtins.c (apply_args_size, apply_result_size, result_vector)
        (expand_builtin_apply_args_1, expand_builtin_apply)
        (expand_builtin_return): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * cse.c (hash_rtx_cb): Hash only the encoded elements.
        * cselib.c (cselib_hash_rtx): Likewise.
        * expmed.c (make_tree): Build VECTOR_CSTs directly from the
        CONST_VECTOR encoding.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>
            Jeff Law  <law@redhat.com>

        PR target/83641
        * config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): For
        noreturn probe, use gen_pop instead of ix86_emit_restore_reg_using_pop,
        only set RTX_FRAME_RELATED_P on both the push and pop if cfa_reg is sp
        and add REG_CFA_ADJUST_CFA notes in that case to both insns.

        PR target/83641
        * config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): Do not
        explicitly probe *sp in a noreturn function if there were any callee
        register saves or frame pointer is needed.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83621
        * cfgexpand.c (expand_debug_expr): Return NULL if mode is
        BLKmode for ternary, binary or unary expressions.

        PR debug/83645
        * var-tracking.c (delete_vta_debug_insn): New inline function.
        (delete_vta_debug_insns): Add USE_CFG argument, if true, walk just
        insns from get_insns () to NULL instead of each bb separately.
        Use delete_vta_debug_insn.  No longer static.
        (vt_debug_insns_local, variable_tracking_main_1): Adjust
        delete_vta_debug_insns callers.
        * rtl.h (delete_vta_debug_insns): Declare.
        * final.c (rest_of_handle_final): Call delete_vta_debug_insns
        instead of variable_tracking_main.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83603
        * calls.c (maybe_warn_nonstring_arg): Avoid accessing function
        arguments past the endof the argument list in functions declared
        without a prototype.
        * gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call):
        Avoid checking when arguments are null.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        PR c/83559
        * doc/extend.texi (attribute const): Fix a typo.
        * ipa-pure-const.c ((warn_function_const, warn_function_pure): Avoid
        issuing -Wsuggest-attribute for void functions.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Use
        offset_int::from instead of wide_int::to_shwi.
        (maybe_diag_overlap): Remove assertion.
        Use HOST_WIDE_INT_PRINT_DEC instead of %lli.
        * gimple-ssa-sprintf.c (format_directive): Same.
        (parse_directive): Same.
        (sprintf_dom_walker::compute_format_length): Same.
        (try_substitute_return_value): Same.

2018-01-03  Jeff Law  <law@redhat.com>

        PR middle-end/83654
        * explow.c (anti_adjust_stack_and_probe_stack_clash): Test a
        non-constant residual for zero at runtime and avoid probing in
        that case.  Reorganize code for trailing problem to mirror handling
        of the residual.

2018-01-03  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/83501
        * tree-ssa-strlen.c (get_string_cst): New.
        (handle_char_store): Call get_string_cst.

2018-01-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/83593
        * tree-ssa-strlen.c: Include tree-cfg.h.
        (strlen_check_and_optimize_stmt): Add new argument cleanup_eh.
        (strlen_dom_walker): Add new member variable m_cleanup_cfg.
        (strlen_dom_walker::strlen_dom_walker): Initialize m_cleanup_cfg
        to false.
        (strlen_dom_walker::before_dom_children): Call
        gimple_purge_dead_eh_edges. Dump tranformation with details
        dump flags.
        (strlen_dom_walker::before_dom_children): Update call by adding
        new argument cleanup_eh.
        (pass_strlen::execute): Return TODO_cleanup_cfg if needed.

2018-01-03  Martin Liska  <mliska@suse.cz>

        PR ipa/83549
        * cif-code.def (VARIADIC_THUNK): New enum value.
        * ipa-fnsummary.c (compute_fn_summary): Do not inline variadic
        thunks.

2018-01-03  Jan Beulich  <jbeulich@suse.com>

        * sse.md (mov<mode>_internal): Tighten condition for when to use
        vmovdqu<ssescalarsize> for TI and OI modes.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.

2018-01-03  Martin Liska  <mliska@suse.cz>

        PR ipa/83594
        * ipa-visibility.c (function_and_variable_visibility): Skip
        functions with noipa attribure.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        * gcc.c (process_command): Update copyright notice dates.
        * gcov-dump.c (print_version): Ditto.
        * gcov.c (print_version): Ditto.
        * gcov-tool.c (print_version): Ditto.
        * gengtype.c (create_file): Ditto.
        * doc/cpp.texi: Bump @copying's copyright year.
        * doc/cppinternals.texi: Ditto.
        * doc/gcc.texi: Ditto.
        * doc/gccint.texi: Ditto.
        * doc/gcov.texi: Ditto.
        * doc/install.texi: Ditto.
        * doc/invoke.texi: Ditto.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * vector-builder.h (vector_builder::m_full_nelts): Change from
        unsigned int to poly_uint64.
        (vector_builder::full_nelts): Update prototype accordingly.
        (vector_builder::new_vector): Likewise.
        (vector_builder::encoded_full_vector_p): Handle polynomial full_nelts.
        (vector_builder::operator ==): Likewise.
        (vector_builder::finalize): Likewise.
        * int-vector-builder.h (int_vector_builder::int_vector_builder):
        Take the number of elements as a poly_uint64 rather than an
        unsigned int.
        * vec-perm-indices.h (vec_perm_indices::m_nelts_per_input): Change
        from unsigned int to poly_uint64.
        (vec_perm_indices::vec_perm_indices): Update prototype accordingly.
        (vec_perm_indices::new_vector): Likewise.
        (vec_perm_indices::length): Likewise.
        (vec_perm_indices::nelts_per_input): Likewise.
        (vec_perm_indices::input_nelts): Likewise.
        * vec-perm-indices.c (vec_perm_indices::new_vector): Take the
        number of elements per input as a poly_uint64 rather than an
        unsigned int.  Use the original encoding for variable-length
        vectors, rather than clamping each individual element.
        For the second and subsequent elements in each pattern,
        clamp the step and base before clamping their sum.
        (vec_perm_indices::series_p): Handle polynomial element counts.
        (vec_perm_indices::all_in_range_p): Likewise.
        (vec_perm_indices_to_tree): Likewise.
        (vec_perm_indices_to_rtx): Likewise.
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Likewise.
        * tree-vector-builder.c (tree_vector_builder::new_unary_operation)
        (tree_vector_builder::new_binary_operation): Handle polynomial
        element counts.  Return false if we need to know the number
        of elements at compile time.
        * fold-const.c (fold_vec_perm): Punt if the number of elements
        isn't known at compile time.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * vec-perm-indices.h (vec_perm_builder): Change element type
        from HOST_WIDE_INT to poly_int64.
        (vec_perm_indices::element_type): Update accordingly.
        (vec_perm_indices::clamp): Handle polynomial element_types.
        * vec-perm-indices.c (vec_perm_indices::series_p): Likewise.
        (vec_perm_indices::all_in_range_p): Likewise.
        (tree_to_vec_perm_builder): Check for poly_int64 trees rather
        than shwi trees.
        * vector-builder.h (vector_builder::stepped_sequence_p): Handle
        polynomial vec_perm_indices element types.
        * int-vector-builder.h (int_vector_builder::equal_p): Likewise.
        * fold-const.c (fold_vec_perm): Likewise.
        * optabs.c (shift_amt_for_vec_perm_mask): Likewise.
        * tree-vect-generic.c (lower_vec_perm): Likewise.
        * tree-vect-slp.c (vect_transform_slp_perm_load): Likewise.
        * config/aarch64/aarch64.c (aarch64_evpc_tbl): Cast d->perm
        element type to HOST_WIDE_INT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * alias.c (addr_side_effect_eval): Take the size as a poly_int64
        rather than an int.  Use plus_constant.
        (memrefs_conflict_p): Take the sizes as poly_int64s rather than ints.
        Take the offset "c" as a poly_int64 rather than a HOST_WIDE_INT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * calls.c (emit_call_1, expand_call): Change struct_value_size from
        a HOST_WIDE_INT to a poly_int64.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * calls.c (load_register_parameters): Cope with polynomial
        mode sizes.  Require a constant size for BLKmode parameters
        that aren't described by a PARALLEL.  If BLOCK_REG_PADDING
        forces a parameter to be padded at the lsb end in order to
        fill a complete number of words, require the parameter size
        to be ordered wrt UNITS_PER_WORD.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * reload1.c (spill_stack_slot_width): Change element type
        from unsigned int to poly_uint64_pod.
        (alter_reg): Treat mode sizes as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * reload.c (complex_word_subreg_p): New function.
        (reload_inner_reg_of_subreg, push_reload): Use it.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * lra-constraints.c (process_alt_operands): Reject matched
        operands whose sizes aren't ordered.
        (match_reload): Refer to this check here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * builtins.c (expand_ifn_atomic_compare_exchange_into_call): Assert
        that the mode size is in the set {1, 2, 4, 8, 16}.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * var-tracking.c (adjust_mems): Treat mode sizes as polynomial.
        Use plus_constant instead of gen_rtx_PLUS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/cr16/cr16-protos.h (cr16_push_rounding): Declare.
        * config/cr16/cr16.h (PUSH_ROUNDING): Move implementation to...
        * config/cr16/cr16.c (cr16_push_rounding): ...this new function.
        * config/h8300/h8300-protos.h (h8300_push_rounding): Declare.
        * config/h8300/h8300.h (PUSH_ROUNDING): Move implementation to...
        * config/h8300/h8300.c (h8300_push_rounding): ...this new function.
        * config/i386/i386-protos.h (ix86_push_rounding): Declare.
        * config/i386/i386.h (PUSH_ROUNDING): Move implementation to...
        * config/i386/i386.c (ix86_push_rounding): ...this new function.
        * config/m32c/m32c-protos.h (m32c_push_rounding): Take and return
        a poly_int64.
        * config/m32c/m32c.c (m32c_push_rounding): Likewise.
        * config/m68k/m68k-protos.h (m68k_push_rounding): Declare.
        * config/m68k/m68k.h (PUSH_ROUNDING): Move implementation to...
        * config/m68k/m68k.c (m68k_push_rounding): ...this new function.
        * config/pdp11/pdp11-protos.h (pdp11_push_rounding): Declare.
        * config/pdp11/pdp11.h (PUSH_ROUNDING): Move implementation to...
        * config/pdp11/pdp11.c (pdp11_push_rounding): ...this new function.
        * config/stormy16/stormy16-protos.h (xstormy16_push_rounding): Declare.
        * config/stormy16/stormy16.h (PUSH_ROUNDING): Move implementation to...
        * config/stormy16/stormy16.c (xstormy16_push_rounding): ...this new
        function.
        * expr.c (emit_move_resolve_push): Treat the input and result
        of PUSH_ROUNDING as a poly_int64.
        (emit_move_complex_push, emit_single_push_insn_1): Likewise.
        (emit_push_insn): Likewise.
        * lra-eliminations.c (mark_not_eliminable): Likewise.
        * recog.c (push_operand): Likewise.
        * reload1.c (elimination_effects): Likewise.
        * rtlanal.c (nonzero_bits1): Likewise.
        * calls.c (store_one_arg): Likewise.  Require the padding to be
        known at compile time.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (emit_single_push_insn_1): Treat mode sizes as polynomial.
        Use plus_constant instead of gen_rtx_PLUS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * auto-inc-dec.c (set_inc_state): Take the mode size as a poly_int64
        rather than an int.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_expr_real_1): Use tree_to_poly_uint64
        instead of int_size_in_bytes when handling VIEW_CONVERT_EXPRs
        via stack temporaries.  Treat the mode size as polynomial too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_expr_real_2): When handling conversions involving
        unions, apply tree_to_poly_uint64 to the TYPE_SIZE rather than
        multiplying int_size_in_bytes by BITS_PER_UNIT.  Treat GET_MODE_BISIZE
        as a poly_uint64 too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * rtlanal.c (subreg_get_info): Handle polynomial mode sizes.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * combine.c (can_change_dest_mode): Handle polynomial
        REGMODE_NATURAL_SIZE.
        * expmed.c (store_bit_field_1): Likewise.
        * expr.c (store_constructor): Likewise.
        * emit-rtl.c (validate_subreg): Operate on polynomial mode sizes
        and polynomial REGMODE_NATURAL_SIZE.
        (gen_lowpart_common): Likewise.
        * reginfo.c (record_subregs_of_mode): Likewise.
        * rtlanal.c (read_modify_subreg_p): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * internal-fn.c (expand_vector_ubsan_overflow): Handle polynomial
        numbers of elements.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * match.pd: Cope with polynomial numbers of vector elements.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * fold-const.c (fold_indirect_ref_1): Handle polynomial offsets
        in a POINTER_PLUS_EXPR.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * omp-simd-clone.c (simd_clone_subparts): New function.
        (simd_clone_init_simd_arrays): Use it instead of TYPE_VECTOR_SUBPARTS.
        (ipa_simd_modify_function_body): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-generic.c (nunits_for_known_piecewise_op): New function.
        (expand_vector_piecewise): Use it instead of TYPE_VECTOR_SUBPARTS.
        (expand_vector_addition, add_rshift, expand_vector_divmod): Likewise.
        (expand_vector_condition, vector_element): Likewise.
        (subparts_gt): New function.
        (get_compute_type): Use subparts_gt.
        (count_type_subparts): Delete.
        (expand_vector_operations_1): Use subparts_gt instead of
        count_type_subparts.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vect_no_alias_p): Replace with...
        (vect_compile_time_alias): ...this new function.  Do the calculation
        on poly_ints rather than trees.
        (vect_prune_runtime_alias_test_list): Update call accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c (vect_build_slp_tree_1): Handle polynomial
        numbers of units.
        (vect_schedule_slp_instance): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c (vect_get_and_check_slp_defs): Reject
        constant and extern definitions for variable-length vectors.
        (vect_get_constant_vectors): Note that the number of units
        is known to be constant.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (vectorizable_conversion): Treat the number
        of units as polynomial.  Choose between WIDE and NARROW based
        on multiple_p.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (simd_clone_subparts): New function.
        (vectorizable_simd_clone_call): Use it instead of TYPE_VECTOR_SUBPARTS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (vectorizable_call): Treat the number of
        vectors as polynomial.  Use build_index_vector for
        IFN_GOMP_SIMD_LANE.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (get_load_store_type): Treat the number of
        units as polynomial.  Reject VMAT_ELEMENTWISE and VMAT_STRIDED_SLP
        for variable-length vectors.
        (vectorizable_mask_load_store): Treat the number of units as
        polynomial, asserting that it is constant if the condition has
        already been enforced.
        (vectorizable_store, vectorizable_load): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop.c (vectorizable_live_operation): Treat the number
        of units as polynomial.  Punt if we can't tell at compile time
        which vector contains the final result.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop.c (vectorizable_induction): Treat the number
        of units as polynomial.  Punt on SLP inductions.  Use an integer
        VEC_SERIES_EXPR for variable-length integer reductions.  Use a
        cast of such a series for variable-length floating-point
        reductions.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree.h (build_index_vector): Declare.
        * tree.c (build_index_vector): New function.
        * tree-vect-loop.c (get_initial_defs_for_reduction): Treat the number
        of units as polynomial, forcibly converting it to a constant if
        vectorizable_reduction has already enforced the condition.
        (vect_create_epilog_for_reduction): Likewise.  Use build_index_vector
        to create a {1,2,3,...} vector.
        (vectorizable_reduction): Treat the number of units as polynomial.
        Choose vectype_in based on the largest scalar element size rather
        than the smallest number of units.  Enforce the restrictions
        relied on above.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vector_alignment_reachable_p): Treat the
        number of units as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.h (vector_sizes, auto_vector_sizes): New typedefs.
        * target.def (autovectorize_vector_sizes): Return the vector sizes
        by pointer, using vector_sizes rather than a bitmask.
        * targhooks.h (default_autovectorize_vector_sizes): Update accordingly.
        * targhooks.c (default_autovectorize_vector_sizes): Likewise.
        * config/aarch64/aarch64.c (aarch64_autovectorize_vector_sizes):
        Likewise.
        * config/arc/arc.c (arc_autovectorize_vector_sizes): Likewise.
        * config/arm/arm.c (arm_autovectorize_vector_sizes): Likewise.
        * config/i386/i386.c (ix86_autovectorize_vector_sizes): Likewise.
        * config/mips/mips.c (mips_autovectorize_vector_sizes): Likewise.
        * omp-general.c (omp_max_vf): Likewise.
        * omp-low.c (omp_clause_aligned_alignment): Likewise.
        * optabs-query.c (can_vec_mask_load_store_p): Likewise.
        * tree-vect-loop.c (vect_analyze_loop): Likewise.
        * tree-vect-slp.c (vect_slp_bb): Likewise.
        * doc/tm.texi: Regenerate.
        * tree-vectorizer.h (current_vector_size): Change from an unsigned int
        to a poly_uint64.
        * tree-vect-stmts.c (get_vectype_for_scalar_type_and_size): Take
        the vector size as a poly_uint64 rather than an unsigned int.
        (current_vector_size): Change from an unsigned int to a poly_uint64.
        (get_vectype_for_scalar_type): Update accordingly.
        * tree.h (build_truth_vector_type): Take the size and number of
        units as a poly_uint64 rather than an unsigned int.
        (build_vector_type): Add a temporary overload that takes
        the number of units as a poly_uint64 rather than an unsigned int.
        * tree.c (make_vector_type): Likewise.
        (build_truth_vector_type): Take the number of units as a poly_uint64
        rather than an unsigned int.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (get_mask_mode): Take the number of units and length
        as poly_uint64s rather than unsigned ints.
        * targhooks.h (default_get_mask_mode): Update accordingly.
        * targhooks.c (default_get_mask_mode): Likewise.
        * config/i386/i386.c (ix86_get_mask_mode): Likewise.
        * doc/tm.texi: Regenerate.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * omp-general.h (omp_max_vf): Return a poly_uint64 instead of an int.
        * omp-general.c (omp_max_vf): Likewise.
        * omp-expand.c (omp_adjust_chunk_size): Update call to omp_max_vf.
        (expand_omp_simd): Handle polynomial safelen.
        * omp-low.c (omplow_simd_context): Add a default constructor.
        (omplow_simd_context::max_vf): Change from int to poly_uint64.
        (lower_rec_simd_input_clauses): Update accordingly.
        (lower_rec_input_clauses): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vect_nunits_for_cost): New function.
        * tree-vect-loop.c (vect_model_reduction_cost): Use it.
        * tree-vect-slp.c (vect_analyze_slp_cost_1): Likewise.
        (vect_analyze_slp_cost): Likewise.
        * tree-vect-stmts.c (vect_model_store_cost): Likewise.
        (vect_model_load_cost): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c (vect_record_max_nunits, vect_build_slp_tree_1)
        (vect_build_slp_tree_2, vect_build_slp_tree): Change max_nunits
        from an unsigned int * to a poly_uint64_pod *.
        (calculate_unrolling_factor): New function.
        (vect_analyze_slp_instance): Use it.  Track polynomial max_nunits.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (_slp_instance::unrolling_factor): Change
        from an unsigned int to a poly_uint64.
        (_loop_vec_info::slp_unrolling_factor): Likewise.
        (_loop_vec_info::vectorization_factor): Change from an int
        to a poly_uint64.
        (MAX_VECTORIZATION_FACTOR): Bump from 64 to INT_MAX.
        (vect_get_num_vectors): New function.
        (vect_update_max_nunits, vect_vf_for_cost): Likewise.
        (vect_get_num_copies): Use vect_get_num_vectors.
        (vect_analyze_data_ref_dependences): Change max_vf from an int *
        to an unsigned int *.
        (vect_analyze_data_refs): Change min_vf from an int * to a
        poly_uint64 *.
        (vect_transform_slp_perm_load): Take the vf as a poly_uint64 rather
        than an unsigned HOST_WIDE_INT.
        * tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr)
        (vect_analyze_data_ref_dependence): Change max_vf from an int *
        to an unsigned int *.
        (vect_analyze_data_ref_dependences): Likewise.
        (vect_compute_data_ref_alignment): Handle polynomial vf.
        (vect_enhance_data_refs_alignment): Likewise.
        (vect_prune_runtime_alias_test_list): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        (vect_supportable_dr_alignment): Likewise.
        (dependence_distance_ge_vf): Take the vectorization factor as a
        poly_uint64 rather than an unsigned HOST_WIDE_INT.
        (vect_analyze_data_refs): Change min_vf from an int * to a
        poly_uint64 *.
        * tree-vect-loop-manip.c (vect_gen_scalar_loop_niters): Take
        vfm1 as a poly_uint64 rather than an int.  Make the same change
        for the returned bound_scalar.
        (vect_gen_vector_loop_niters): Handle polynomial vf.
        (vect_do_peeling): Likewise.  Update call to
        vect_gen_scalar_loop_niters and handle polynomial bound_scalars.
        (vect_gen_vector_loop_niters_mult_vf): Assert that the vf must
        be constant.
        * tree-vect-loop.c (vect_determine_vectorization_factor)
        (vect_update_vf_for_slp, vect_analyze_loop_2): Handle polynomial vf.
        (vect_get_known_peeling_cost): Likewise.
        (vect_estimate_min_profitable_iters, vectorizable_reduction): Likewise.
        (vect_worthwhile_without_simd_p, vectorizable_induction): Likewise.
        (vect_transform_loop): Likewise.  Use the lowest possible VF when
        updating the upper bounds of the loop.
        (vect_min_worthwhile_factor): Make static.  Return an unsigned int
        rather than an int.
        * tree-vect-slp.c (vect_attempt_slp_rearrange_stmts): Cope with
        polynomial unroll factors.
        (vect_analyze_slp_cost_1, vect_analyze_slp_instance): Likewise.
        (vect_make_slp_decision): Likewise.
        (vect_supported_load_permutation_p): Likewise, and polynomial
        vf too.
        (vect_analyze_slp_cost): Handle polynomial vf.
        (vect_slp_analyze_node_operations): Likewise.
        (vect_slp_analyze_bb_1): Likewise.
        (vect_transform_slp_perm_load): Take the vf as a poly_uint64 rather
        than an unsigned HOST_WIDE_INT.
        * tree-vect-stmts.c (vectorizable_simd_clone_call, vectorizable_store)
        (vectorizable_load): Handle polynomial vf.
        * tree-vectorizer.c (simduid_to_vf::vf): Change from an int to
        a poly_uint64.
        (adjust_simduid_builtins, shrink_simd_arrays): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * match.pd: Handle bit operations involving three constants
        and try to fold one pair.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-loop-manip.c: Include gimple-fold.h.
        (slpeel_make_loop_iterate_ntimes): Add step, final_iv and
        niters_maybe_zero parameters.  Handle other cases besides a step of 1.
        (vect_gen_vector_loop_niters): Add a step_vector_ptr parameter.
        Add a path that uses a step of VF instead of 1, but disable it
        for now.
        (vect_do_peeling): Add step_vector, niters_vector_mult_vf_var
        and niters_no_overflow parameters.  Update calls to
        slpeel_make_loop_iterate_ntimes and vect_gen_vector_loop_niters.
        Create a new SSA name if the latter choses to use a ste other
        than zero, and return it via niters_vector_mult_vf_var.
        * tree-vect-loop.c (vect_transform_loop): Update calls to
        vect_do_peeling, vect_gen_vector_loop_niters and
        slpeel_make_loop_iterate_ntimes.
        * tree-vectorizer.h (slpeel_make_loop_iterate_ntimes, vect_do_peeling)
        (vect_gen_vector_loop_niters): Update declarations after above changes.

2018-01-02  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (floor<mode>2): Add support for IEEE
        128-bit round to integer instructions.
        (ceil<mode>2): Likewise.
        (btrunc<mode>2): Likewise.
        (round<mode>2): Likewise.

2018-01-02  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * config/rs6000/rs6000-string.c (expand_block_move): Allow the use of
        unaligned VSX load/store on P8/P9.
        (expand_block_clear): Allow the use of unaligned VSX
        load/store on P8/P9.

2018-01-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000-p8swap.c (swap_feeds_both_load_and_store):
        New function.
        (rs6000_analyze_swaps): Mark a web unoptimizable if it contains a
        swap associated with both a load and a store.

2018-01-02  Andrew Waterman  <andrew@sifive.com>

        * config/riscv/linux.h (ICACHE_FLUSH_FUNC): New.
        * config/riscv/riscv.md (clear_cache): Use it.

2018-01-02  Artyom Skrobov  <tyomitch@gmail.com>

        * web.c: Remove out-of-date comment.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * expr.c (fixup_args_size_notes): Check that any existing
        REG_ARGS_SIZE notes are correct, and don't try to re-add them.
        (emit_single_push_insn_1): Move stack_pointer_delta adjustment to...
        (emit_single_push_insn): ...here.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * rtl.h (CONST_VECTOR_ELT): Redefine to const_vector_elt.
        (const_vector_encoded_nelts): New function.
        (CONST_VECTOR_NUNITS): Redefine to use GET_MODE_NUNITS.
        (const_vector_int_elt, const_vector_elt): Declare.
        * emit-rtl.c (const_vector_int_elt_1): New function.
        (const_vector_elt): Likewise.
        * simplify-rtx.c (simplify_immed_subreg): Avoid taking the address
        of CONST_VECTOR_ELT.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * expr.c: Include rtx-vector-builder.h.
        (const_vector_mask_from_tree): Use rtx_vector_builder and operate
        directly on the tree encoding.
        (const_vector_from_tree): Likewise.
        * optabs.c: Include rtx-vector-builder.h.
        (expand_vec_perm_var): Use rtx_vector_builder and create a repeating
        sequence of "u" values.
        * vec-perm-indices.c: Include rtx-vector-builder.h.
        (vec_perm_indices_to_rtx): Use rtx_vector_builder and operate
        directly on the vec_perm_indices encoding.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi (const_vector): Describe new encoding scheme.
        * Makefile.in (OBJS): Add rtx-vector-builder.o.
        * rtx-vector-builder.h: New file.
        * rtx-vector-builder.c: Likewise.
        * rtl.h (rtx_def::u2): Add a const_vector field.
        (CONST_VECTOR_NPATTERNS): New macro.
        (CONST_VECTOR_NELTS_PER_PATTERN): Likewise.
        (CONST_VECTOR_DUPLICATE_P): Likewise.
        (CONST_VECTOR_STEPPED_P): Likewise.
        (CONST_VECTOR_ENCODED_ELT): Likewise.
        (const_vec_duplicate_p): Check for a duplicated vector encoding.
        (unwrap_const_vec_duplicate): Likewise.
        (const_vec_series_p): Check for a non-duplicated vector encoding.
        Say that the function only returns true for integer vectors.
        * emit-rtl.c: Include rtx-vector-builder.h.
        (gen_const_vec_duplicate_1): Delete.
        (gen_const_vector): Call gen_const_vec_duplicate instead of
        gen_const_vec_duplicate_1.
        (const_vec_series_p_1): Operate directly on the CONST_VECTOR encoding.
        (gen_const_vec_duplicate): Use rtx_vector_builder.
        (gen_const_vec_series): Likewise.
        (gen_rtx_CONST_VECTOR): Likewise.
        * config/powerpcspe/powerpcspe.c: Include rtx-vector-builder.h.
        (swap_const_vector_halves): Take an rtx pointer rather than rtx.
        Build a new vector rather than modifying a CONST_VECTOR in-place.
        (handle_special_swappables): Update call accordingly.
        * config/rs6000/rs6000-p8swap.c: Include rtx-vector-builder.h.
        (swap_const_vector_halves): Take an rtx pointer rather than rtx.
        Build a new vector rather than modifying a CONST_VECTOR in-place.
        (handle_special_swappables): Update call accordingly.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * simplify-rtx.c (simplify_const_binary_operation): Use
        CONST_VECTOR_ELT instead of XVECEXP.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-cfg.c (verify_gimple_assign_ternary): Allow the size of
        the selector elements to be different from the data elements
        if the selector is a VECTOR_CST.
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Use a vector of
        ssizetype for the selector.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (shift_amt_for_vec_perm_mask): Try using series_p
        before testing each element individually.
        * tree-vect-generic.c (lower_vec_perm): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * selftest.h (selftest::vec_perm_indices_c_tests): Declare.
        * selftest-run-tests.c (selftest::run_tests): Call it.
        * vector-builder.h (vector_builder::operator ==): New function.
        (vector_builder::operator !=): Likewise.
        * vec-perm-indices.h (vec_perm_indices::series_p): Declare.
        (vec_perm_indices::all_from_input_p): New function.
        * vec-perm-indices.c (vec_perm_indices::series_p): Likewise.
        (test_vec_perm_12, selftest::vec_perm_indices_c_tests): Likewise.
        * fold-const.c (fold_ternary_loc): Use tree_to_vec_perm_builder
        instead of reading the VECTOR_CST directly.  Detect whether both
        vector inputs are the same before constructing the vec_perm_indices,
        and update the number of inputs argument accordingly.  Use the
        utility functions added above.  Only construct sel2 if we need to.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (expand_vec_perm_var): Use an explicit encoding for
        the broadcast of the low byte.
        (expand_mult_highpart): Use an explicit encoding for the permutes.
        * optabs-query.c (can_mult_highpart_p): Likewise.
        * tree-vect-loop.c (calc_vec_perm_mask_for_shift): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (vectorizable_bswap): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Use an
        explicit encoding for the power-of-2 permutes.
        (vect_permute_store_chain): Likewise.
        (vect_grouped_load_supported): Likewise.
        (vect_permute_load_chain): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * vec-perm-indices.h (vec_perm_indices_to_tree): Declare.
        * vec-perm-indices.c (vec_perm_indices_to_tree): New function.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Use it.
        * tree-vect-slp.c (vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (vectorizable_bswap): Likewise.
        (vect_gen_perm_mask_any): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * int-vector-builder.h: New file.
        * vec-perm-indices.h: Include int-vector-builder.h.
        (vec_perm_indices): Redefine as an int_vector_builder.
        (auto_vec_perm_indices): Delete.
        (vec_perm_builder): Redefine as a stand-alone class.
        (vec_perm_indices::vec_perm_indices): New function.
        (vec_perm_indices::clamp): Likewise.
        * vec-perm-indices.c: Include fold-const.h and tree-vector-builder.h.
        (vec_perm_indices::new_vector): New function.
        (vec_perm_indices::new_expanded_vector): Update for new
        vec_perm_indices class.
        (vec_perm_indices::rotate_inputs): New function.
        (vec_perm_indices::all_in_range_p): Operate directly on the
        encoded form, without computing elided elements.
        (tree_to_vec_perm_builder): Operate directly on the VECTOR_CST
        encoding.  Update for new vec_perm_indices class.
        * optabs.c (expand_vec_perm_const): Create a vec_perm_indices for
        the given vec_perm_builder.
        (expand_vec_perm_var): Update vec_perm_builder constructor.
        (expand_mult_highpart): Use vec_perm_builder instead of
        auto_vec_perm_indices.
        * optabs-query.c (can_mult_highpart_p): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.  Use a single
        or double series encoding as appropriate.
        * fold-const.c (fold_ternary_loc): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
        (vect_permute_store_chain): Likewise.
        (vect_grouped_load_supported): Likewise.
        (vect_permute_load_chain): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        * tree-vect-slp.c (vect_build_slp_tree_1): Likewise.
        (vect_transform_slp_perm_load): Likewise.
        (vect_schedule_slp_instance): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (vectorizable_mask_load_store): Likewise.
        (vectorizable_bswap): Likewise.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        * tree-vect-generic.c (lower_vec_perm): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.  Use
        tree_to_vec_perm_builder to read the vector from a tree.
        * tree-vect-loop.c (calc_vec_perm_mask_for_shift): Take a
        vec_perm_builder instead of a vec_perm_indices.
        (have_whole_vector_shift): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.  Leave the
        truncation to calc_vec_perm_mask_for_shift.
        (vect_create_epilog_for_reduction): Likewise.
        * config/aarch64/aarch64.c (expand_vec_perm_d::perm): Change
        from auto_vec_perm_indices to vec_perm_indices.
        (aarch64_expand_vec_perm_const_1): Use rotate_inputs on d.perm
        instead of changing individual elements.
        (aarch64_vectorize_vec_perm_const): Use new_vector to install
        the vector in d.perm.
        * config/arm/arm.c (expand_vec_perm_d::perm): Change
        from auto_vec_perm_indices to vec_perm_indices.
        (arm_expand_vec_perm_const_1): Use rotate_inputs on d.perm
        instead of changing individual elements.
        (arm_vectorize_vec_perm_const): Use new_vector to install
        the vector in d.perm.
        * config/powerpcspe/powerpcspe.c (rs6000_expand_extract_even):
        Update vec_perm_builder constructor.
        (rs6000_expand_interleave): Likewise.
        * config/rs6000/rs6000.c (rs6000_expand_extract_even): Likewise.
        (rs6000_expand_interleave): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.c (can_vec_perm_var_p): Check whether lowering
        to qimode could truncate the indices.
        * optabs.c (expand_vec_perm_var): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * Makefile.in (OBJS): Add vec-perm-indices.o.
        * vec-perm-indices.h: New file.
        * vec-perm-indices.c: Likewise.
        * target.h (vec_perm_indices): Replace with a forward class
        declaration.
        (auto_vec_perm_indices): Move to vec-perm-indices.h.
        * optabs.h: Include vec-perm-indices.h.
        (expand_vec_perm): Delete.
        (selector_fits_mode_p, expand_vec_perm_var): Declare.
        (expand_vec_perm_const): Declare.
        * target.def (vec_perm_const_ok): Replace with...
        (vec_perm_const): ...this new hook.
        * doc/tm.texi.in (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Replace with...
        (TARGET_VECTORIZE_VEC_PERM_CONST): ...this new hook.
        * doc/tm.texi: Regenerate.
        * optabs.def (vec_perm_const): Delete.
        * doc/md.texi (vec_perm_const): Likewise.
        (vec_perm): Refer to TARGET_VECTORIZE_VEC_PERM_CONST.
        * expr.c (expand_expr_real_2): Use expand_vec_perm_const rather than
        expand_vec_perm for constant permutation vectors.  Assert that
        the mode of variable permutation vectors is the integer equivalent
        of the mode that is being permuted.
        * optabs-query.h (selector_fits_mode_p): Declare.
        * optabs-query.c: Include vec-perm-indices.h.
        (selector_fits_mode_p): New function.
        (can_vec_perm_const_p): Check whether targetm.vectorize.vec_perm_const
        is defined, instead of checking whether the vec_perm_const_optab
        exists.  Use targetm.vectorize.vec_perm_const instead of
        targetm.vectorize.vec_perm_const_ok.  Check whether the indices
        fit in the vector mode before using a variable permute.
        * optabs.c (shift_amt_for_vec_perm_mask): Take a mode and a
        vec_perm_indices instead of an rtx.
        (expand_vec_perm): Replace with...
        (expand_vec_perm_const): ...this new function.  Take the selector
        as a vec_perm_indices rather than an rtx.  Also take the mode of
        the selector.  Update call to shift_amt_for_vec_perm_mask.
        Use targetm.vectorize.vec_perm_const instead of vec_perm_const_optab.
        Use vec_perm_indices::new_expanded_vector to expand the original
        selector into bytes.  Check whether the indices fit in the vector
        mode before using a variable permute.
        (expand_vec_perm_var): Make global.
        (expand_mult_highpart): Use expand_vec_perm_const.
        * fold-const.c: Includes vec-perm-indices.h.
        * tree-ssa-forwprop.c: Likewise.
        * tree-vect-data-refs.c: Likewise.
        * tree-vect-generic.c: Likewise.
        * tree-vect-loop.c: Likewise.
        * tree-vect-slp.c: Likewise.
        * tree-vect-stmts.c: Likewise.
        * config/aarch64/aarch64-protos.h (aarch64_expand_vec_perm_const):
        Delete.
        * config/aarch64/aarch64-simd.md (vec_perm_const<mode>): Delete.
        * config/aarch64/aarch64.c (aarch64_expand_vec_perm_const)
        (aarch64_vectorize_vec_perm_const_ok): Fuse into...
        (aarch64_vectorize_vec_perm_const): ...this new function.
        (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        * config/arm/arm-protos.h (arm_expand_vec_perm_const): Delete.
        * config/arm/vec-common.md (vec_perm_const<mode>): Delete.
        * config/arm/arm.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        (arm_expand_vec_perm_const, arm_vectorize_vec_perm_const_ok): Merge
        into...
        (arm_vectorize_vec_perm_const): ...this new function.  Explicitly
        check for NEON modes.
        * config/i386/i386-protos.h (ix86_expand_vec_perm_const): Delete.
        * config/i386/sse.md (VEC_PERM_CONST, vec_perm_const<mode>): Delete.
        * config/i386/i386.c (ix86_expand_vec_perm_const_1): Update comment.
        (ix86_expand_vec_perm_const, ix86_vectorize_vec_perm_const_ok): Merge
        into...
        (ix86_vectorize_vec_perm_const): ...this new function.  Incorporate
        the old VEC_PERM_CONST conditions.
        * config/ia64/ia64-protos.h (ia64_expand_vec_perm_const): Delete.
        * config/ia64/vect.md (vec_perm_const<mode>): Delete.
        * config/ia64/ia64.c (ia64_expand_vec_perm_const)
        (ia64_vectorize_vec_perm_const_ok): Merge into...
        (ia64_vectorize_vec_perm_const): ...this new function.
        * config/mips/loongson.md (vec_perm_const<mode>): Delete.
        * config/mips/mips-msa.md (vec_perm_const<mode>): Delete.
        * config/mips/mips-ps-3d.md (vec_perm_constv2sf): Delete.
        * config/mips/mips-protos.h (mips_expand_vec_perm_const): Delete.
        * config/mips/mips.c (mips_expand_vec_perm_const)
        (mips_vectorize_vec_perm_const_ok): Merge into...
        (mips_vectorize_vec_perm_const): ...this new function.
        * config/powerpcspe/altivec.md (vec_perm_constv16qi): Delete.
        * config/powerpcspe/paired.md (vec_perm_constv2sf): Delete.
        * config/powerpcspe/spe.md (vec_perm_constv2si): Delete.
        * config/powerpcspe/vsx.md (vec_perm_const<mode>): Delete.
        * config/powerpcspe/powerpcspe-protos.h (altivec_expand_vec_perm_const)
        (rs6000_expand_vec_perm_const): Delete.
        * config/powerpcspe/powerpcspe.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK):
        Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        (altivec_expand_vec_perm_const_le): Take each operand individually.
        Operate on constant selectors rather than rtxes.
        (altivec_expand_vec_perm_const): Likewise.  Update call to
        altivec_expand_vec_perm_const_le.
        (rs6000_expand_vec_perm_const): Delete.
        (rs6000_vectorize_vec_perm_const_ok): Delete.
        (rs6000_vectorize_vec_perm_const): New function.
        (rs6000_do_expand_vec_perm): Take a vec_perm_builder instead of
        an element count and rtx array.
        (rs6000_expand_extract_even): Update call accordingly.
        (rs6000_expand_interleave): Likewise.
        * config/rs6000/altivec.md (vec_perm_constv16qi): Delete.
        * config/rs6000/paired.md (vec_perm_constv2sf): Delete.
        * config/rs6000/vsx.md (vec_perm_const<mode>): Delete.
        * config/rs6000/rs6000-protos.h (altivec_expand_vec_perm_const)
        (rs6000_expand_vec_perm_const): Delete.
        * config/rs6000/rs6000.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        (altivec_expand_vec_perm_const_le): Take each operand individually.
        Operate on constant selectors rather than rtxes.
        (altivec_expand_vec_perm_const): Likewise.  Update call to
        altivec_expand_vec_perm_const_le.
        (rs6000_expand_vec_perm_const): Delete.
        (rs6000_vectorize_vec_perm_const_ok): Delete.
        (rs6000_vectorize_vec_perm_const): New function.  Remove stray
        reference to the SPE evmerge intructions.
        (rs6000_do_expand_vec_perm): Take a vec_perm_builder instead of
        an element count and rtx array.
        (rs6000_expand_extract_even): Update call accordingly.
        (rs6000_expand_interleave): Likewise.
        * config/sparc/sparc.md (vec_perm_constv8qi): Delete in favor of...
        * config/sparc/sparc.c (sparc_vectorize_vec_perm_const): ...this
        new function.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (expand_vec_perm_1): Assert that SEL has an integer
        vector mode and that that mode matches the mode of the data
        being permuted.
        (expand_vec_perm): Split handling of non-CONST_VECTOR selectors
        out into expand_vec_perm_var.  Do all CONST_VECTOR handling here,
        directly using expand_vec_perm_1 when forcing selectors into
        registers.
        (expand_vec_perm_var): New function, split out from expand_vec_perm.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.h (can_vec_perm_p): Delete.
        (can_vec_perm_var_p, can_vec_perm_const_p): Declare.
        * optabs-query.c (can_vec_perm_p): Split into...
        (can_vec_perm_var_p, can_vec_perm_const_p): ...these two functions.
        (can_mult_highpart_p): Use can_vec_perm_const_p to test whether a
        particular selector is valid.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
        (vect_grouped_load_supported): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        * tree-vect-slp.c (vect_build_slp_tree_1): Likewise.
        (vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (vectorizable_bswap): Likewise.
        (vect_gen_perm_mask_checked): Likewise.
        * fold-const.c (fold_ternary_loc): Likewise.  Don't take
        implementations of variable permutation vectors into account
        when deciding which selector to use.
        * tree-vect-loop.c (have_whole_vector_shift): Don't check whether
        vec_perm_const_optab is supported; instead use can_vec_perm_const_p
        with a false third argument.
        * tree-vect-generic.c (lower_vec_perm): Use can_vec_perm_const_p
        to test whether the constant selector is valid and can_vec_perm_var_p
        to test whether a variable selector is valid.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.h (can_vec_perm_p): Take a const vec_perm_indices *.
        * optabs-query.c (can_vec_perm_p): Likewise.
        * fold-const.c (fold_vec_perm): Take a const vec_perm_indices &
        instead of vec_perm_indices.
        * tree-vectorizer.h (vect_gen_perm_mask_any): Likewise,
        (vect_gen_perm_mask_checked): Likewise,
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Likewise,
        (vect_gen_perm_mask_checked): Likewise,

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.h (qimode_for_vec_perm): Declare.
        * optabs-query.c (can_vec_perm_p): Split out qimode search to...
        (qimode_for_vec_perm): ...this new function.
        * optabs.c (expand_vec_perm): Use qimode_for_vec_perm.

2018-01-02  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * rtlanal.c (canonicalize_condition): Return 0 if final rtx
        does not have a conditional at the top.

2018-01-02  Richard Biener  <rguenther@suse.de>

        * ipa-inline.c (big_speedup_p): Fix expression.

2018-01-02  Jan Hubicka  <hubicka@ucw.cz>

        PR target/81616
        * config/i386/x86-tune-costs.h: Increase cost of integer load costs
        for generic 4->6.

2018-01-02  Jan Hubicka  <hubicka@ucw.cz>

        PR target/81616
        Generic tuning.
        * x86-tune-costs.h (generic_cost): Reduce cost of FDIV 20->17,
        cost of sqrt 20->14, DIVSS 18->13, DIVSD 32->17, SQRtSS 30->14
        and SQRTsD 58->18, cond_not_taken_branch_cost. 2->1. Increase
        cond_taken_branch_cost 3->4.

2018-01-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/83581
        * tree-loop-distribution.c (pass_loop_distribution::execute): Return
        TODO_cleanup_cfg if any changes have been made.

        PR middle-end/83608
        * expr.c (store_expr_with_bounds): Use simplify_gen_subreg instead of
        convert_modes if target mode has the right side, but different mode
        class.

        PR middle-end/83609
        * expr.c (expand_assignment): Fix up a typo in simplify_gen_subreg
        last argument when extracting from CONCAT.  If either from_real or
        from_imag is NULL, use expansion through memory.  If result is not
        a CONCAT and simplify_gen_subreg fails, try to simplify_gen_subreg
        the parts directly to inner mode, if even that fails, use expansion
        through memory.

        PR middle-end/83623
        * expmed.c (expand_shift_1): For 2-byte rotates by BITS_PER_UNIT,
        check for bswap in mode rather than HImode and use that in expand_unop
        too.
\f
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