1 /* Default target hook functions.
2 Copyright (C) 2003-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* The migration of target macros to target hooks works as follows:
22 1. Create a target hook that uses the existing target macros to
23 implement the same functionality.
25 2. Convert all the MI files to use the hook instead of the macro.
27 3. Repeat for a majority of the remaining target macros. This will
30 4. Tell target maintainers to start migrating.
32 5. Eventually convert the backends to override the hook instead of
33 defining the macros. This will take some time too.
35 6. TBD when, poison the macros. Unmigrated targets will break at
38 Note that we expect steps 1-3 to be done by the people that
39 understand what the MI does with each macro, and step 5 to be done
40 by the target maintainers for their respective targets.
42 Note that steps 1 and 2 don't have to be done together, but no
43 target can override the new hook until step 2 is complete for it.
45 Once the macros are poisoned, we will revert to the old migration
46 rules - migrate the macro, callers, and targets all at once. This
47 comment can thus be removed at that point. */
51 #include "coretypes.h"
56 #include "tree-ssa-alias.h"
57 #include "gimple-expr.h"
59 #include "stringpool.h"
60 #include "tree-ssanames.h"
64 #include "diagnostic-core.h"
65 #include "fold-const.h"
66 #include "stor-layout.h"
80 default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED
,
81 rtx addr ATTRIBUTE_UNUSED
,
82 bool strict ATTRIBUTE_UNUSED
)
84 #ifdef GO_IF_LEGITIMATE_ADDRESS
85 /* Defer to the old implementation using a goto. */
87 return strict_memory_address_p (mode
, addr
);
89 return memory_address_p (mode
, addr
);
96 default_external_libcall (rtx fun ATTRIBUTE_UNUSED
)
98 #ifdef ASM_OUTPUT_EXTERNAL_LIBCALL
99 ASM_OUTPUT_EXTERNAL_LIBCALL (asm_out_file
, fun
);
104 default_unspec_may_trap_p (const_rtx x
, unsigned flags
)
108 /* Any floating arithmetic may trap. */
109 if ((SCALAR_FLOAT_MODE_P (GET_MODE (x
)) && flag_trapping_math
))
112 for (i
= 0; i
< XVECLEN (x
, 0); ++i
)
114 if (may_trap_p_1 (XVECEXP (x
, 0, i
), flags
))
122 default_promote_function_mode (const_tree type ATTRIBUTE_UNUSED
,
124 int *punsignedp ATTRIBUTE_UNUSED
,
125 const_tree funtype ATTRIBUTE_UNUSED
,
126 int for_return ATTRIBUTE_UNUSED
)
128 if (type
!= NULL_TREE
&& for_return
== 2)
129 return promote_mode (type
, mode
, punsignedp
);
134 default_promote_function_mode_always_promote (const_tree type
,
137 const_tree funtype ATTRIBUTE_UNUSED
,
138 int for_return ATTRIBUTE_UNUSED
)
140 return promote_mode (type
, mode
, punsignedp
);
144 default_cc_modes_compatible (machine_mode m1
, machine_mode m2
)
152 default_return_in_memory (const_tree type
,
153 const_tree fntype ATTRIBUTE_UNUSED
)
155 return (TYPE_MODE (type
) == BLKmode
);
159 default_legitimize_address (rtx x
, rtx orig_x ATTRIBUTE_UNUSED
,
160 machine_mode mode ATTRIBUTE_UNUSED
)
166 default_legitimize_address_displacement (rtx
*disp ATTRIBUTE_UNUSED
,
167 rtx
*offset ATTRIBUTE_UNUSED
,
168 machine_mode mode ATTRIBUTE_UNUSED
)
174 default_expand_builtin_saveregs (void)
176 error ("__builtin_saveregs not supported by this target");
181 default_setup_incoming_varargs (cumulative_args_t ca ATTRIBUTE_UNUSED
,
182 machine_mode mode ATTRIBUTE_UNUSED
,
183 tree type ATTRIBUTE_UNUSED
,
184 int *pretend_arg_size ATTRIBUTE_UNUSED
,
185 int second_time ATTRIBUTE_UNUSED
)
189 /* The default implementation of TARGET_BUILTIN_SETJMP_FRAME_VALUE. */
192 default_builtin_setjmp_frame_value (void)
194 return virtual_stack_vars_rtx
;
197 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns false. */
200 hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t ca ATTRIBUTE_UNUSED
)
206 default_pretend_outgoing_varargs_named (cumulative_args_t ca ATTRIBUTE_UNUSED
)
208 return (targetm
.calls
.setup_incoming_varargs
209 != default_setup_incoming_varargs
);
213 default_eh_return_filter_mode (void)
215 return targetm
.unwind_word_mode ();
219 default_libgcc_cmp_return_mode (void)
225 default_libgcc_shift_count_mode (void)
231 default_unwind_word_mode (void)
236 /* The default implementation of TARGET_SHIFT_TRUNCATION_MASK. */
238 unsigned HOST_WIDE_INT
239 default_shift_truncation_mask (machine_mode mode
)
241 return SHIFT_COUNT_TRUNCATED
? GET_MODE_BITSIZE (mode
) - 1 : 0;
244 /* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */
247 default_min_divisions_for_recip_mul (machine_mode mode ATTRIBUTE_UNUSED
)
249 return have_insn_for (DIV
, mode
) ? 3 : 2;
252 /* The default implementation of TARGET_MODE_REP_EXTENDED. */
255 default_mode_rep_extended (machine_mode mode ATTRIBUTE_UNUSED
,
256 machine_mode mode_rep ATTRIBUTE_UNUSED
)
261 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true. */
264 hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t a ATTRIBUTE_UNUSED
)
269 /* Return machine mode for non-standard suffix
270 or VOIDmode if non-standard suffixes are unsupported. */
272 default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED
)
277 /* The generic C++ ABI specifies this is a 64-bit value. */
279 default_cxx_guard_type (void)
281 return long_long_integer_type_node
;
284 /* Returns the size of the cookie to use when allocating an array
285 whose elements have the indicated TYPE. Assumes that it is already
286 known that a cookie is needed. */
289 default_cxx_get_cookie_size (tree type
)
293 /* We need to allocate an additional max (sizeof (size_t), alignof
294 (true_type)) bytes. */
298 sizetype_size
= size_in_bytes (sizetype
);
299 type_align
= size_int (TYPE_ALIGN_UNIT (type
));
300 if (tree_int_cst_lt (type_align
, sizetype_size
))
301 cookie_size
= sizetype_size
;
303 cookie_size
= type_align
;
308 /* Return true if a parameter must be passed by reference. This version
309 of the TARGET_PASS_BY_REFERENCE hook uses just MUST_PASS_IN_STACK. */
312 hook_pass_by_reference_must_pass_in_stack (cumulative_args_t c ATTRIBUTE_UNUSED
,
313 machine_mode mode ATTRIBUTE_UNUSED
, const_tree type ATTRIBUTE_UNUSED
,
314 bool named_arg ATTRIBUTE_UNUSED
)
316 return targetm
.calls
.must_pass_in_stack (mode
, type
);
319 /* Return true if a parameter follows callee copies conventions. This
320 version of the hook is true for all named arguments. */
323 hook_callee_copies_named (cumulative_args_t ca ATTRIBUTE_UNUSED
,
324 machine_mode mode ATTRIBUTE_UNUSED
,
325 const_tree type ATTRIBUTE_UNUSED
, bool named
)
330 /* Emit to STREAM the assembler syntax for insn operand X. */
333 default_print_operand (FILE *stream ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
334 int code ATTRIBUTE_UNUSED
)
337 PRINT_OPERAND (stream
, x
, code
);
343 /* Emit to STREAM the assembler syntax for an insn operand whose memory
347 default_print_operand_address (FILE *stream ATTRIBUTE_UNUSED
,
348 machine_mode
/*mode*/,
349 rtx x ATTRIBUTE_UNUSED
)
351 #ifdef PRINT_OPERAND_ADDRESS
352 PRINT_OPERAND_ADDRESS (stream
, x
);
358 /* Return true if CODE is a valid punctuation character for the
359 `print_operand' hook. */
362 default_print_operand_punct_valid_p (unsigned char code ATTRIBUTE_UNUSED
)
364 #ifdef PRINT_OPERAND_PUNCT_VALID_P
365 return PRINT_OPERAND_PUNCT_VALID_P (code
);
371 /* The default implementation of TARGET_MANGLE_ASSEMBLER_NAME. */
373 default_mangle_assembler_name (const char *name ATTRIBUTE_UNUSED
)
375 const char *skipped
= name
+ (*name
== '*' ? 1 : 0);
376 const char *stripped
= targetm
.strip_name_encoding (skipped
);
377 if (*name
!= '*' && user_label_prefix
[0])
378 stripped
= ACONCAT ((user_label_prefix
, stripped
, NULL
));
379 return get_identifier (stripped
);
382 /* True if MODE is valid for the target. By "valid", we mean able to
383 be manipulated in non-trivial ways. In particular, this means all
384 the arithmetic is supported.
386 By default we guess this means that any C type is supported. If
387 we can't map the mode back to a type that would be available in C,
388 then reject it. Special case, here, is the double-word arithmetic
389 supported by optabs.c. */
392 default_scalar_mode_supported_p (machine_mode mode
)
394 int precision
= GET_MODE_PRECISION (mode
);
396 switch (GET_MODE_CLASS (mode
))
398 case MODE_PARTIAL_INT
:
400 if (precision
== CHAR_TYPE_SIZE
)
402 if (precision
== SHORT_TYPE_SIZE
)
404 if (precision
== INT_TYPE_SIZE
)
406 if (precision
== LONG_TYPE_SIZE
)
408 if (precision
== LONG_LONG_TYPE_SIZE
)
410 if (precision
== 2 * BITS_PER_WORD
)
415 if (precision
== FLOAT_TYPE_SIZE
)
417 if (precision
== DOUBLE_TYPE_SIZE
)
419 if (precision
== LONG_DOUBLE_TYPE_SIZE
)
423 case MODE_DECIMAL_FLOAT
:
435 /* Return true if libgcc supports floating-point mode MODE (known to
436 be supported as a scalar mode). */
439 default_libgcc_floating_mode_supported_p (machine_mode mode
)
462 /* Make some target macros useable by target-independent code. */
464 targhook_words_big_endian (void)
466 return !!WORDS_BIG_ENDIAN
;
470 targhook_float_words_big_endian (void)
472 return !!FLOAT_WORDS_BIG_ENDIAN
;
475 /* True if the target supports floating-point exceptions and rounding
479 default_float_exceptions_rounding_supported_p (void)
488 /* True if the target supports decimal floating point. */
491 default_decimal_float_supported_p (void)
493 return ENABLE_DECIMAL_FLOAT
;
496 /* True if the target supports fixed-point arithmetic. */
499 default_fixed_point_supported_p (void)
501 return ENABLE_FIXED_POINT
;
504 /* True if the target supports GNU indirect functions. */
507 default_has_ifunc_p (void)
509 return HAVE_GNU_INDIRECT_FUNCTION
;
512 /* NULL if INSN insn is valid within a low-overhead loop, otherwise returns
515 This function checks whether a given INSN is valid within a low-overhead
516 loop. If INSN is invalid it returns the reason for that, otherwise it
517 returns NULL. A called function may clobber any special registers required
518 for low-overhead looping. Additionally, some targets (eg, PPC) use the count
519 register for branch on table instructions. We reject the doloop pattern in
523 default_invalid_within_doloop (const rtx_insn
*insn
)
526 return "Function call in loop.";
528 if (tablejump_p (insn
, NULL
, NULL
) || computed_jump_p (insn
))
529 return "Computed branch in the loop.";
534 /* Mapping of builtin functions to vectorized variants. */
537 default_builtin_vectorized_function (unsigned int, tree
, tree
)
542 /* Mapping of target builtin functions to vectorized variants. */
545 default_builtin_md_vectorized_function (tree
, tree
, tree
)
550 /* Vectorized conversion. */
553 default_builtin_vectorized_conversion (unsigned int code ATTRIBUTE_UNUSED
,
554 tree dest_type ATTRIBUTE_UNUSED
,
555 tree src_type ATTRIBUTE_UNUSED
)
560 /* Default vectorizer cost model values. */
563 default_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost
,
565 int misalign ATTRIBUTE_UNUSED
)
569 switch (type_of_cost
)
579 case cond_branch_not_taken
:
581 case vec_promote_demote
:
585 case unaligned_store
:
588 case cond_branch_taken
:
592 elements
= TYPE_VECTOR_SUBPARTS (vectype
);
593 return elements
/ 2 + 1;
603 default_builtin_reciprocal (tree
)
609 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false (
610 cumulative_args_t ca ATTRIBUTE_UNUSED
,
611 machine_mode mode ATTRIBUTE_UNUSED
,
612 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
618 hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true (
619 cumulative_args_t ca ATTRIBUTE_UNUSED
,
620 machine_mode mode ATTRIBUTE_UNUSED
,
621 const_tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
627 hook_int_CUMULATIVE_ARGS_mode_tree_bool_0 (
628 cumulative_args_t ca ATTRIBUTE_UNUSED
,
629 machine_mode mode ATTRIBUTE_UNUSED
,
630 tree type ATTRIBUTE_UNUSED
, bool named ATTRIBUTE_UNUSED
)
636 default_function_arg_advance (cumulative_args_t ca ATTRIBUTE_UNUSED
,
637 machine_mode mode ATTRIBUTE_UNUSED
,
638 const_tree type ATTRIBUTE_UNUSED
,
639 bool named ATTRIBUTE_UNUSED
)
645 default_function_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
646 machine_mode mode ATTRIBUTE_UNUSED
,
647 const_tree type ATTRIBUTE_UNUSED
,
648 bool named ATTRIBUTE_UNUSED
)
654 default_function_incoming_arg (cumulative_args_t ca ATTRIBUTE_UNUSED
,
655 machine_mode mode ATTRIBUTE_UNUSED
,
656 const_tree type ATTRIBUTE_UNUSED
,
657 bool named ATTRIBUTE_UNUSED
)
663 default_function_arg_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
664 const_tree type ATTRIBUTE_UNUSED
)
666 return PARM_BOUNDARY
;
670 default_function_arg_round_boundary (machine_mode mode ATTRIBUTE_UNUSED
,
671 const_tree type ATTRIBUTE_UNUSED
)
673 return PARM_BOUNDARY
;
677 hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED
)
682 hook_invalid_arg_for_unprototyped_fn (
683 const_tree typelist ATTRIBUTE_UNUSED
,
684 const_tree funcdecl ATTRIBUTE_UNUSED
,
685 const_tree val ATTRIBUTE_UNUSED
)
690 /* Initialize the stack protection decls. */
692 /* Stack protection related decls living in libgcc. */
693 static GTY(()) tree stack_chk_guard_decl
;
696 default_stack_protect_guard (void)
698 tree t
= stack_chk_guard_decl
;
704 t
= build_decl (UNKNOWN_LOCATION
,
705 VAR_DECL
, get_identifier ("__stack_chk_guard"),
709 DECL_EXTERNAL (t
) = 1;
711 TREE_THIS_VOLATILE (t
) = 1;
712 DECL_ARTIFICIAL (t
) = 1;
713 DECL_IGNORED_P (t
) = 1;
715 /* Do not share RTL as the declaration is visible outside of
718 RTX_FLAG (x
, used
) = 1;
720 stack_chk_guard_decl
= t
;
726 static GTY(()) tree stack_chk_fail_decl
;
729 default_external_stack_protect_fail (void)
731 tree t
= stack_chk_fail_decl
;
735 t
= build_function_type_list (void_type_node
, NULL_TREE
);
736 t
= build_decl (UNKNOWN_LOCATION
,
737 FUNCTION_DECL
, get_identifier ("__stack_chk_fail"), t
);
740 DECL_EXTERNAL (t
) = 1;
742 TREE_THIS_VOLATILE (t
) = 1;
743 TREE_NOTHROW (t
) = 1;
744 DECL_ARTIFICIAL (t
) = 1;
745 DECL_IGNORED_P (t
) = 1;
746 DECL_VISIBILITY (t
) = VISIBILITY_DEFAULT
;
747 DECL_VISIBILITY_SPECIFIED (t
) = 1;
749 stack_chk_fail_decl
= t
;
752 return build_call_expr (t
, 0);
756 default_hidden_stack_protect_fail (void)
758 #ifndef HAVE_GAS_HIDDEN
759 return default_external_stack_protect_fail ();
761 tree t
= stack_chk_fail_decl
;
764 return default_external_stack_protect_fail ();
768 t
= build_function_type_list (void_type_node
, NULL_TREE
);
769 t
= build_decl (UNKNOWN_LOCATION
, FUNCTION_DECL
,
770 get_identifier ("__stack_chk_fail_local"), t
);
773 DECL_EXTERNAL (t
) = 1;
775 TREE_THIS_VOLATILE (t
) = 1;
776 TREE_NOTHROW (t
) = 1;
777 DECL_ARTIFICIAL (t
) = 1;
778 DECL_IGNORED_P (t
) = 1;
779 DECL_VISIBILITY_SPECIFIED (t
) = 1;
780 DECL_VISIBILITY (t
) = VISIBILITY_HIDDEN
;
782 stack_chk_fail_decl
= t
;
785 return build_call_expr (t
, 0);
790 hook_bool_const_rtx_commutative_p (const_rtx x
,
791 int outer_code ATTRIBUTE_UNUSED
)
793 return COMMUTATIVE_P (x
);
797 default_function_value (const_tree ret_type ATTRIBUTE_UNUSED
,
798 const_tree fn_decl_or_type
,
799 bool outgoing ATTRIBUTE_UNUSED
)
801 /* The old interface doesn't handle receiving the function type. */
803 && !DECL_P (fn_decl_or_type
))
804 fn_decl_or_type
= NULL
;
806 #ifdef FUNCTION_VALUE
807 return FUNCTION_VALUE (ret_type
, fn_decl_or_type
);
814 default_libcall_value (machine_mode mode ATTRIBUTE_UNUSED
,
815 const_rtx fun ATTRIBUTE_UNUSED
)
818 return LIBCALL_VALUE (mode
);
824 /* The default hook for TARGET_FUNCTION_VALUE_REGNO_P. */
827 default_function_value_regno_p (const unsigned int regno ATTRIBUTE_UNUSED
)
829 #ifdef FUNCTION_VALUE_REGNO_P
830 return FUNCTION_VALUE_REGNO_P (regno
);
837 default_internal_arg_pointer (void)
839 /* If the reg that the virtual arg pointer will be translated into is
840 not a fixed reg or is the stack pointer, make a copy of the virtual
841 arg pointer, and address parms via the copy. The frame pointer is
842 considered fixed even though it is not marked as such. */
843 if ((ARG_POINTER_REGNUM
== STACK_POINTER_REGNUM
844 || ! (fixed_regs
[ARG_POINTER_REGNUM
]
845 || ARG_POINTER_REGNUM
== FRAME_POINTER_REGNUM
)))
846 return copy_to_reg (virtual_incoming_args_rtx
);
848 return virtual_incoming_args_rtx
;
852 default_static_chain (const_tree
ARG_UNUSED (fndecl_or_type
), bool incoming_p
)
856 #ifdef STATIC_CHAIN_INCOMING_REGNUM
857 return gen_rtx_REG (Pmode
, STATIC_CHAIN_INCOMING_REGNUM
);
861 #ifdef STATIC_CHAIN_REGNUM
862 return gen_rtx_REG (Pmode
, STATIC_CHAIN_REGNUM
);
866 static bool issued_error
;
870 sorry ("nested functions not supported on this target");
873 /* It really doesn't matter what we return here, so long at it
874 doesn't cause the rest of the compiler to crash. */
875 return gen_rtx_MEM (Pmode
, stack_pointer_rtx
);
880 default_trampoline_init (rtx
ARG_UNUSED (m_tramp
), tree
ARG_UNUSED (t_func
),
881 rtx
ARG_UNUSED (r_chain
))
883 sorry ("nested function trampolines not supported on this target");
887 default_return_pops_args (tree fundecl ATTRIBUTE_UNUSED
,
888 tree funtype ATTRIBUTE_UNUSED
,
889 int size ATTRIBUTE_UNUSED
)
895 default_branch_target_register_class (void)
901 default_ira_change_pseudo_allocno_class (int regno ATTRIBUTE_UNUSED
,
914 default_register_priority (int hard_regno ATTRIBUTE_UNUSED
)
920 default_register_usage_leveling_p (void)
926 default_different_addr_displacement_p (void)
932 default_secondary_reload (bool in_p ATTRIBUTE_UNUSED
, rtx x ATTRIBUTE_UNUSED
,
933 reg_class_t reload_class_i ATTRIBUTE_UNUSED
,
934 machine_mode reload_mode ATTRIBUTE_UNUSED
,
935 secondary_reload_info
*sri
)
937 enum reg_class rclass
= NO_REGS
;
938 enum reg_class reload_class
= (enum reg_class
) reload_class_i
;
940 if (sri
->prev_sri
&& sri
->prev_sri
->t_icode
!= CODE_FOR_nothing
)
942 sri
->icode
= sri
->prev_sri
->t_icode
;
945 #ifdef SECONDARY_INPUT_RELOAD_CLASS
947 rclass
= SECONDARY_INPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
949 #ifdef SECONDARY_OUTPUT_RELOAD_CLASS
951 rclass
= SECONDARY_OUTPUT_RELOAD_CLASS (reload_class
, reload_mode
, x
);
953 if (rclass
!= NO_REGS
)
956 = direct_optab_handler (in_p
? reload_in_optab
: reload_out_optab
,
959 if (icode
!= CODE_FOR_nothing
960 && !insn_operand_matches (icode
, in_p
, x
))
961 icode
= CODE_FOR_nothing
;
962 else if (icode
!= CODE_FOR_nothing
)
964 const char *insn_constraint
, *scratch_constraint
;
965 enum reg_class insn_class
, scratch_class
;
967 gcc_assert (insn_data
[(int) icode
].n_operands
== 3);
968 insn_constraint
= insn_data
[(int) icode
].operand
[!in_p
].constraint
;
969 if (!*insn_constraint
)
970 insn_class
= ALL_REGS
;
975 gcc_assert (*insn_constraint
== '=');
978 insn_class
= (reg_class_for_constraint
979 (lookup_constraint (insn_constraint
)));
980 gcc_assert (insn_class
!= NO_REGS
);
983 scratch_constraint
= insn_data
[(int) icode
].operand
[2].constraint
;
984 /* The scratch register's constraint must start with "=&",
985 except for an input reload, where only "=" is necessary,
986 and where it might be beneficial to re-use registers from
988 gcc_assert (scratch_constraint
[0] == '='
989 && (in_p
|| scratch_constraint
[1] == '&'));
990 scratch_constraint
++;
991 if (*scratch_constraint
== '&')
992 scratch_constraint
++;
993 scratch_class
= (reg_class_for_constraint
994 (lookup_constraint (scratch_constraint
)));
996 if (reg_class_subset_p (reload_class
, insn_class
))
998 gcc_assert (scratch_class
== rclass
);
1002 rclass
= insn_class
;
1005 if (rclass
== NO_REGS
)
1008 sri
->t_icode
= icode
;
1013 /* By default, if flag_pic is true, then neither local nor global relocs
1014 should be placed in readonly memory. */
1017 default_reloc_rw_mask (void)
1019 return flag_pic
? 3 : 0;
1022 /* By default, do no modification. */
1023 tree
default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED
,
1029 /* Default to natural alignment for vector types. */
1031 default_vector_alignment (const_tree type
)
1033 return tree_to_shwi (TYPE_SIZE (type
));
1037 default_builtin_vector_alignment_reachable (const_tree type
, bool is_packed
)
1042 /* Assuming that types whose size is > pointer-size are not guaranteed to be
1043 naturally aligned. */
1044 if (tree_int_cst_compare (TYPE_SIZE (type
), bitsize_int (POINTER_SIZE
)) > 0)
1047 /* Assuming that types whose size is <= pointer-size
1048 are naturally aligned. */
1052 /* By default, assume that a target supports any factor of misalignment
1053 memory access if it supports movmisalign patten.
1054 is_packed is true if the memory access is defined in a packed struct. */
1056 default_builtin_support_vector_misalignment (machine_mode mode
,
1064 if (optab_handler (movmisalign_optab
, mode
) != CODE_FOR_nothing
)
1069 /* By default, only attempt to parallelize bitwise operations, and
1070 possibly adds/subtracts using bit-twiddling. */
1073 default_preferred_simd_mode (machine_mode mode ATTRIBUTE_UNUSED
)
1078 /* By default only the size derived from the preferred vector mode
1082 default_autovectorize_vector_sizes (void)
1087 /* By defaults a vector of integers is used as a mask. */
1090 default_get_mask_mode (unsigned nunits
, unsigned vector_size
)
1092 unsigned elem_size
= vector_size
/ nunits
;
1093 machine_mode elem_mode
1094 = smallest_mode_for_size (elem_size
* BITS_PER_UNIT
, MODE_INT
);
1095 machine_mode vector_mode
;
1097 gcc_assert (elem_size
* nunits
== vector_size
);
1099 vector_mode
= mode_for_vector (elem_mode
, nunits
);
1100 if (!VECTOR_MODE_P (vector_mode
)
1101 || !targetm
.vector_mode_supported_p (vector_mode
))
1102 vector_mode
= BLKmode
;
1107 /* By default, the cost model accumulates three separate costs (prologue,
1108 loop body, and epilogue) for a vectorized loop or block. So allocate an
1109 array of three unsigned ints, set it to zero, and return its address. */
1112 default_init_cost (struct loop
*loop_info ATTRIBUTE_UNUSED
)
1114 unsigned *cost
= XNEWVEC (unsigned, 3);
1115 cost
[vect_prologue
] = cost
[vect_body
] = cost
[vect_epilogue
] = 0;
1119 /* By default, the cost model looks up the cost of the given statement
1120 kind and mode, multiplies it by the occurrence count, accumulates
1121 it into the cost specified by WHERE, and returns the cost added. */
1124 default_add_stmt_cost (void *data
, int count
, enum vect_cost_for_stmt kind
,
1125 struct _stmt_vec_info
*stmt_info
, int misalign
,
1126 enum vect_cost_model_location where
)
1128 unsigned *cost
= (unsigned *) data
;
1129 unsigned retval
= 0;
1131 tree vectype
= stmt_info
? stmt_vectype (stmt_info
) : NULL_TREE
;
1132 int stmt_cost
= targetm
.vectorize
.builtin_vectorization_cost (kind
, vectype
,
1134 /* Statements in an inner loop relative to the loop being
1135 vectorized are weighted more heavily. The value here is
1136 arbitrary and could potentially be improved with analysis. */
1137 if (where
== vect_body
&& stmt_info
&& stmt_in_inner_loop_p (stmt_info
))
1138 count
*= 50; /* FIXME. */
1140 retval
= (unsigned) (count
* stmt_cost
);
1141 cost
[where
] += retval
;
1146 /* By default, the cost model just returns the accumulated costs. */
1149 default_finish_cost (void *data
, unsigned *prologue_cost
,
1150 unsigned *body_cost
, unsigned *epilogue_cost
)
1152 unsigned *cost
= (unsigned *) data
;
1153 *prologue_cost
= cost
[vect_prologue
];
1154 *body_cost
= cost
[vect_body
];
1155 *epilogue_cost
= cost
[vect_epilogue
];
1158 /* Free the cost data. */
1161 default_destroy_cost_data (void *data
)
1166 /* Determine whether or not a pointer mode is valid. Assume defaults
1167 of ptr_mode or Pmode - can be overridden. */
1169 default_valid_pointer_mode (machine_mode mode
)
1171 return (mode
== ptr_mode
|| mode
== Pmode
);
1174 /* Determine whether the memory reference specified by REF may alias
1175 the C libraries errno location. */
1177 default_ref_may_alias_errno (ao_ref
*ref
)
1179 tree base
= ao_ref_base (ref
);
1180 /* The default implementation assumes the errno location is
1181 a declaration of type int or is always accessed via a
1182 pointer to int. We assume that accesses to errno are
1183 not deliberately obfuscated (even in conforming ways). */
1184 if (TYPE_UNSIGNED (TREE_TYPE (base
))
1185 || TYPE_MODE (TREE_TYPE (base
)) != TYPE_MODE (integer_type_node
))
1187 /* The default implementation assumes an errno location
1188 declaration is never defined in the current compilation unit. */
1190 && !TREE_STATIC (base
))
1192 else if (TREE_CODE (base
) == MEM_REF
1193 && TREE_CODE (TREE_OPERAND (base
, 0)) == SSA_NAME
)
1195 struct ptr_info_def
*pi
= SSA_NAME_PTR_INFO (TREE_OPERAND (base
, 0));
1196 return !pi
|| pi
->pt
.anything
|| pi
->pt
.nonlocal
;
1201 /* Return the mode for a pointer to a given ADDRSPACE,
1202 defaulting to ptr_mode for all address spaces. */
1205 default_addr_space_pointer_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1210 /* Return the mode for an address in a given ADDRSPACE,
1211 defaulting to Pmode for all address spaces. */
1214 default_addr_space_address_mode (addr_space_t addrspace ATTRIBUTE_UNUSED
)
1219 /* Named address space version of valid_pointer_mode.
1220 To match the above, the same modes apply to all address spaces. */
1223 default_addr_space_valid_pointer_mode (machine_mode mode
,
1224 addr_space_t as ATTRIBUTE_UNUSED
)
1226 return targetm
.valid_pointer_mode (mode
);
1229 /* Some places still assume that all pointer or address modes are the
1230 standard Pmode and ptr_mode. These optimizations become invalid if
1231 the target actually supports multiple different modes. For now,
1232 we disable such optimizations on such targets, using this function. */
1235 target_default_pointer_address_modes_p (void)
1237 if (targetm
.addr_space
.address_mode
!= default_addr_space_address_mode
)
1239 if (targetm
.addr_space
.pointer_mode
!= default_addr_space_pointer_mode
)
1245 /* Named address space version of legitimate_address_p.
1246 By default, all address spaces have the same form. */
1249 default_addr_space_legitimate_address_p (machine_mode mode
, rtx mem
,
1251 addr_space_t as ATTRIBUTE_UNUSED
)
1253 return targetm
.legitimate_address_p (mode
, mem
, strict
);
1256 /* Named address space version of LEGITIMIZE_ADDRESS.
1257 By default, all address spaces have the same form. */
1260 default_addr_space_legitimize_address (rtx x
, rtx oldx
, machine_mode mode
,
1261 addr_space_t as ATTRIBUTE_UNUSED
)
1263 return targetm
.legitimize_address (x
, oldx
, mode
);
1266 /* The default hook for determining if one named address space is a subset of
1267 another and to return which address space to use as the common address
1271 default_addr_space_subset_p (addr_space_t subset
, addr_space_t superset
)
1273 return (subset
== superset
);
1276 /* The default hook for determining if 0 within a named address
1277 space is a valid address. */
1280 default_addr_space_zero_address_valid (addr_space_t as ATTRIBUTE_UNUSED
)
1285 /* The default hook for debugging the address space is to return the
1286 address space number to indicate DW_AT_address_class. */
1288 default_addr_space_debug (addr_space_t as
)
1293 /* The default hook for TARGET_ADDR_SPACE_CONVERT. This hook should never be
1294 called for targets with only a generic address space. */
1297 default_addr_space_convert (rtx op ATTRIBUTE_UNUSED
,
1298 tree from_type ATTRIBUTE_UNUSED
,
1299 tree to_type ATTRIBUTE_UNUSED
)
1305 default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED
)
1310 /* The default implementation of TARGET_MODE_DEPENDENT_ADDRESS_P. */
1313 default_mode_dependent_address_p (const_rtx addr ATTRIBUTE_UNUSED
,
1314 addr_space_t addrspace ATTRIBUTE_UNUSED
)
1320 default_target_option_valid_attribute_p (tree
ARG_UNUSED (fndecl
),
1321 tree
ARG_UNUSED (name
),
1322 tree
ARG_UNUSED (args
),
1323 int ARG_UNUSED (flags
))
1325 warning (OPT_Wattributes
,
1326 "target attribute is not supported on this machine");
1332 default_target_option_pragma_parse (tree
ARG_UNUSED (args
),
1333 tree
ARG_UNUSED (pop_target
))
1335 /* If args is NULL the caller is handle_pragma_pop_options (). In that case,
1336 emit no warning because "#pragma GCC pop_target" is valid on targets that
1337 do not have the "target" pragma. */
1339 warning (OPT_Wpragmas
,
1340 "#pragma GCC target is not supported for this machine");
1346 default_target_can_inline_p (tree caller
, tree callee
)
1349 tree callee_opts
= DECL_FUNCTION_SPECIFIC_TARGET (callee
);
1350 tree caller_opts
= DECL_FUNCTION_SPECIFIC_TARGET (caller
);
1352 /* If callee has no option attributes, then it is ok to inline */
1356 /* If caller has no option attributes, but callee does then it is not ok to
1358 else if (!caller_opts
)
1361 /* If both caller and callee have attributes, assume that if the
1362 pointer is different, the two functions have different target
1363 options since build_target_option_node uses a hash table for the
1366 ret
= (callee_opts
== caller_opts
);
1371 /* If the machine does not have a case insn that compares the bounds,
1372 this means extra overhead for dispatch tables, which raises the
1373 threshold for using them. */
1376 default_case_values_threshold (void)
1378 return (targetm
.have_casesi () ? 4 : 5);
1382 default_have_conditional_execution (void)
1384 return HAVE_conditional_execution
;
1387 /* By default we assume that c99 functions are present at the runtime,
1388 but sincos is not. */
1390 default_libc_has_function (enum function_class fn_class
)
1392 if (fn_class
== function_c94
1393 || fn_class
== function_c99_misc
1394 || fn_class
== function_c99_math_complex
)
1401 gnu_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1407 no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED
)
1413 default_builtin_tm_load_store (tree
ARG_UNUSED (type
))
1418 /* Compute cost of moving registers to/from memory. */
1421 default_memory_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1422 reg_class_t rclass ATTRIBUTE_UNUSED
,
1423 bool in ATTRIBUTE_UNUSED
)
1425 #ifndef MEMORY_MOVE_COST
1426 return (4 + memory_move_secondary_cost (mode
, (enum reg_class
) rclass
, in
));
1428 return MEMORY_MOVE_COST (mode
, (enum reg_class
) rclass
, in
);
1432 /* Compute cost of moving data from a register of class FROM to one of
1436 default_register_move_cost (machine_mode mode ATTRIBUTE_UNUSED
,
1437 reg_class_t from ATTRIBUTE_UNUSED
,
1438 reg_class_t to ATTRIBUTE_UNUSED
)
1440 #ifndef REGISTER_MOVE_COST
1443 return REGISTER_MOVE_COST (mode
, (enum reg_class
) from
, (enum reg_class
) to
);
1447 /* For hooks which use the MOVE_RATIO macro, this gives the legacy default
1448 behaviour. SPEED_P is true if we are compiling for speed. */
1451 get_move_ratio (bool speed_p ATTRIBUTE_UNUSED
)
1453 unsigned int move_ratio
;
1455 move_ratio
= (unsigned int) MOVE_RATIO (speed_p
);
1457 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1459 #else /* No movmem patterns, pick a default. */
1460 move_ratio
= ((speed_p
) ? 15 : 3);
1466 /* Return TRUE if the move_by_pieces/set_by_pieces infrastructure should be
1467 used; return FALSE if the movmem/setmem optab should be expanded, or
1468 a call to memcpy emitted. */
1471 default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT size
,
1472 unsigned int alignment
,
1473 enum by_pieces_operation op
,
1476 unsigned int max_size
= 0;
1477 unsigned int ratio
= 0;
1481 case CLEAR_BY_PIECES
:
1482 max_size
= STORE_MAX_PIECES
;
1483 ratio
= CLEAR_RATIO (speed_p
);
1485 case MOVE_BY_PIECES
:
1486 max_size
= MOVE_MAX_PIECES
;
1487 ratio
= get_move_ratio (speed_p
);
1490 max_size
= STORE_MAX_PIECES
;
1491 ratio
= SET_RATIO (speed_p
);
1493 case STORE_BY_PIECES
:
1494 max_size
= STORE_MAX_PIECES
;
1495 ratio
= get_move_ratio (speed_p
);
1499 return move_by_pieces_ninsns (size
, alignment
, max_size
+ 1) < ratio
;
1503 default_profile_before_prologue (void)
1505 #ifdef PROFILE_BEFORE_PROLOGUE
1512 /* The default implementation of TARGET_PREFERRED_RELOAD_CLASS. */
1515 default_preferred_reload_class (rtx x ATTRIBUTE_UNUSED
,
1518 #ifdef PREFERRED_RELOAD_CLASS
1519 return (reg_class_t
) PREFERRED_RELOAD_CLASS (x
, (enum reg_class
) rclass
);
1525 /* The default implementation of TARGET_OUTPUT_PREFERRED_RELOAD_CLASS. */
1528 default_preferred_output_reload_class (rtx x ATTRIBUTE_UNUSED
,
1534 /* The default implementation of TARGET_PREFERRED_RENAME_CLASS. */
1536 default_preferred_rename_class (reg_class_t rclass ATTRIBUTE_UNUSED
)
1541 /* The default implementation of TARGET_CLASS_LIKELY_SPILLED_P. */
1544 default_class_likely_spilled_p (reg_class_t rclass
)
1546 return (reg_class_size
[(int) rclass
] == 1);
1549 /* The default implementation of TARGET_CLASS_MAX_NREGS. */
1552 default_class_max_nregs (reg_class_t rclass ATTRIBUTE_UNUSED
,
1553 machine_mode mode ATTRIBUTE_UNUSED
)
1555 #ifdef CLASS_MAX_NREGS
1556 return (unsigned char) CLASS_MAX_NREGS ((enum reg_class
) rclass
, mode
);
1558 return ((GET_MODE_SIZE (mode
) + UNITS_PER_WORD
- 1) / UNITS_PER_WORD
);
1562 /* Determine the debugging unwind mechanism for the target. */
1564 enum unwind_info_type
1565 default_debug_unwind_info (void)
1567 /* If the target wants to force the use of dwarf2 unwind info, let it. */
1568 /* ??? Change all users to the hook, then poison this. */
1569 #ifdef DWARF2_FRAME_INFO
1570 if (DWARF2_FRAME_INFO
)
1574 /* Otherwise, only turn it on if dwarf2 debugging is enabled. */
1575 #ifdef DWARF2_DEBUGGING_INFO
1576 if (write_symbols
== DWARF2_DEBUG
|| write_symbols
== VMS_AND_DWARF2_DEBUG
)
1583 /* Determine the correct mode for a Dwarf frame register that represents
1587 default_dwarf_frame_reg_mode (int regno
)
1589 machine_mode save_mode
= reg_raw_mode
[regno
];
1591 if (HARD_REGNO_CALL_PART_CLOBBERED (regno
, save_mode
))
1592 save_mode
= choose_hard_reg_mode (regno
, 1, true);
1596 /* To be used by targets where reg_raw_mode doesn't return the right
1597 mode for registers used in apply_builtin_return and apply_builtin_arg. */
1600 default_get_reg_raw_mode (int regno
)
1602 return reg_raw_mode
[regno
];
1605 /* Return true if a leaf function should stay leaf even with profiling
1609 default_keep_leaf_when_profiled ()
1614 /* Return true if the state of option OPTION should be stored in PCH files
1615 and checked by default_pch_valid_p. Store the option's current state
1619 option_affects_pch_p (int option
, struct cl_option_state
*state
)
1621 if ((cl_options
[option
].flags
& CL_TARGET
) == 0)
1623 if ((cl_options
[option
].flags
& CL_PCH_IGNORE
) != 0)
1625 if (option_flag_var (option
, &global_options
) == &target_flags
)
1626 if (targetm
.check_pch_target_flags
)
1628 return get_option_state (&global_options
, option
, state
);
1631 /* Default version of get_pch_validity.
1632 By default, every flag difference is fatal; that will be mostly right for
1633 most targets, but completely right for very few. */
1636 default_get_pch_validity (size_t *sz
)
1638 struct cl_option_state state
;
1643 if (targetm
.check_pch_target_flags
)
1644 *sz
+= sizeof (target_flags
);
1645 for (i
= 0; i
< cl_options_count
; i
++)
1646 if (option_affects_pch_p (i
, &state
))
1649 result
= r
= XNEWVEC (char, *sz
);
1653 if (targetm
.check_pch_target_flags
)
1655 memcpy (r
, &target_flags
, sizeof (target_flags
));
1656 r
+= sizeof (target_flags
);
1659 for (i
= 0; i
< cl_options_count
; i
++)
1660 if (option_affects_pch_p (i
, &state
))
1662 memcpy (r
, state
.data
, state
.size
);
1669 /* Return a message which says that a PCH file was created with a different
1670 setting of OPTION. */
1673 pch_option_mismatch (const char *option
)
1675 return xasprintf (_("created and used with differing settings of '%s'"),
1679 /* Default version of pch_valid_p. */
1682 default_pch_valid_p (const void *data_p
, size_t len
)
1684 struct cl_option_state state
;
1685 const char *data
= (const char *)data_p
;
1688 /* -fpic and -fpie also usually make a PCH invalid. */
1689 if (data
[0] != flag_pic
)
1690 return _("created and used with different settings of -fpic");
1691 if (data
[1] != flag_pie
)
1692 return _("created and used with different settings of -fpie");
1695 /* Check target_flags. */
1696 if (targetm
.check_pch_target_flags
)
1701 memcpy (&tf
, data
, sizeof (target_flags
));
1702 data
+= sizeof (target_flags
);
1703 len
-= sizeof (target_flags
);
1704 r
= targetm
.check_pch_target_flags (tf
);
1709 for (i
= 0; i
< cl_options_count
; i
++)
1710 if (option_affects_pch_p (i
, &state
))
1712 if (memcmp (data
, state
.data
, state
.size
) != 0)
1713 return pch_option_mismatch (cl_options
[i
].opt_text
);
1721 /* Default version of cstore_mode. */
1724 default_cstore_mode (enum insn_code icode
)
1726 return insn_data
[(int) icode
].operand
[0].mode
;
1729 /* Default version of member_type_forces_blk. */
1732 default_member_type_forces_blk (const_tree
, machine_mode
)
1738 default_load_bounds_for_arg (rtx addr ATTRIBUTE_UNUSED
,
1739 rtx ptr ATTRIBUTE_UNUSED
,
1740 rtx bnd ATTRIBUTE_UNUSED
)
1746 default_store_bounds_for_arg (rtx val ATTRIBUTE_UNUSED
,
1747 rtx addr ATTRIBUTE_UNUSED
,
1748 rtx bounds ATTRIBUTE_UNUSED
,
1749 rtx to ATTRIBUTE_UNUSED
)
1755 default_load_returned_bounds (rtx slot ATTRIBUTE_UNUSED
)
1761 default_store_returned_bounds (rtx slot ATTRIBUTE_UNUSED
,
1762 rtx bounds ATTRIBUTE_UNUSED
)
1767 /* Default version of canonicalize_comparison. */
1770 default_canonicalize_comparison (int *, rtx
*, rtx
*, bool)
1774 /* Default implementation of TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */
1777 default_atomic_assign_expand_fenv (tree
*, tree
*, tree
*)
1781 #ifndef PAD_VARARGS_DOWN
1782 #define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
1785 /* Build an indirect-ref expression over the given TREE, which represents a
1786 piece of a va_arg() expansion. */
1788 build_va_arg_indirect_ref (tree addr
)
1790 addr
= build_simple_mem_ref_loc (EXPR_LOCATION (addr
), addr
);
1794 /* The "standard" implementation of va_arg: read the value from the
1795 current (padded) address and increment by the (padded) size. */
1798 std_gimplify_va_arg_expr (tree valist
, tree type
, gimple_seq
*pre_p
,
1801 tree addr
, t
, type_size
, rounded_size
, valist_tmp
;
1802 unsigned HOST_WIDE_INT align
, boundary
;
1805 /* All of the alignment and movement below is for args-grow-up machines.
1806 As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
1807 implement their own specialized gimplify_va_arg_expr routines. */
1808 if (ARGS_GROW_DOWNWARD
)
1811 indirect
= pass_by_reference (NULL
, TYPE_MODE (type
), type
, false);
1813 type
= build_pointer_type (type
);
1815 align
= PARM_BOUNDARY
/ BITS_PER_UNIT
;
1816 boundary
= targetm
.calls
.function_arg_boundary (TYPE_MODE (type
), type
);
1818 /* When we align parameter on stack for caller, if the parameter
1819 alignment is beyond MAX_SUPPORTED_STACK_ALIGNMENT, it will be
1820 aligned at MAX_SUPPORTED_STACK_ALIGNMENT. We will match callee
1821 here with caller. */
1822 if (boundary
> MAX_SUPPORTED_STACK_ALIGNMENT
)
1823 boundary
= MAX_SUPPORTED_STACK_ALIGNMENT
;
1825 boundary
/= BITS_PER_UNIT
;
1827 /* Hoist the valist value into a temporary for the moment. */
1828 valist_tmp
= get_initialized_tmp_var (valist
, pre_p
, NULL
);
1830 /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
1831 requires greater alignment, we must perform dynamic alignment. */
1832 if (boundary
> align
1833 && !integer_zerop (TYPE_SIZE (type
)))
1835 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1836 fold_build_pointer_plus_hwi (valist_tmp
, boundary
- 1));
1837 gimplify_and_add (t
, pre_p
);
1839 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1840 fold_build2 (BIT_AND_EXPR
, TREE_TYPE (valist
),
1842 build_int_cst (TREE_TYPE (valist
), -boundary
)));
1843 gimplify_and_add (t
, pre_p
);
1848 /* If the actual alignment is less than the alignment of the type,
1849 adjust the type accordingly so that we don't assume strict alignment
1850 when dereferencing the pointer. */
1851 boundary
*= BITS_PER_UNIT
;
1852 if (boundary
< TYPE_ALIGN (type
))
1854 type
= build_variant_type_copy (type
);
1855 TYPE_ALIGN (type
) = boundary
;
1858 /* Compute the rounded size of the type. */
1859 type_size
= size_in_bytes (type
);
1860 rounded_size
= round_up (type_size
, align
);
1862 /* Reduce rounded_size so it's sharable with the postqueue. */
1863 gimplify_expr (&rounded_size
, pre_p
, post_p
, is_gimple_val
, fb_rvalue
);
1867 if (PAD_VARARGS_DOWN
&& !integer_zerop (rounded_size
))
1869 /* Small args are padded downward. */
1870 t
= fold_build2_loc (input_location
, GT_EXPR
, sizetype
,
1871 rounded_size
, size_int (align
));
1872 t
= fold_build3 (COND_EXPR
, sizetype
, t
, size_zero_node
,
1873 size_binop (MINUS_EXPR
, rounded_size
, type_size
));
1874 addr
= fold_build_pointer_plus (addr
, t
);
1877 /* Compute new value for AP. */
1878 t
= fold_build_pointer_plus (valist_tmp
, rounded_size
);
1879 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist
, t
);
1880 gimplify_and_add (t
, pre_p
);
1882 addr
= fold_convert (build_pointer_type (type
), addr
);
1885 addr
= build_va_arg_indirect_ref (addr
);
1887 return build_va_arg_indirect_ref (addr
);
1891 default_chkp_bound_type (void)
1893 tree res
= make_node (POINTER_BOUNDS_TYPE
);
1894 TYPE_PRECISION (res
) = TYPE_PRECISION (size_type_node
) * 2;
1895 TYPE_NAME (res
) = get_identifier ("__bounds_type");
1896 SET_TYPE_MODE (res
, targetm
.chkp_bound_mode ());
1902 default_chkp_bound_mode (void)
1908 default_builtin_chkp_function (unsigned int fcode ATTRIBUTE_UNUSED
)
1914 default_chkp_function_value_bounds (const_tree ret_type ATTRIBUTE_UNUSED
,
1915 const_tree fn_decl_or_type ATTRIBUTE_UNUSED
,
1916 bool outgoing ATTRIBUTE_UNUSED
)
1922 default_chkp_make_bounds_constant (HOST_WIDE_INT lb ATTRIBUTE_UNUSED
,
1923 HOST_WIDE_INT ub ATTRIBUTE_UNUSED
)
1929 default_chkp_initialize_bounds (tree var ATTRIBUTE_UNUSED
,
1930 tree lb ATTRIBUTE_UNUSED
,
1931 tree ub ATTRIBUTE_UNUSED
,
1932 tree
*stmts ATTRIBUTE_UNUSED
)
1938 default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED
,
1939 enum machine_mode mode ATTRIBUTE_UNUSED
,
1940 tree type ATTRIBUTE_UNUSED
,
1941 int *pretend_arg_size ATTRIBUTE_UNUSED
,
1942 int second_time ATTRIBUTE_UNUSED
)
1946 /* An implementation of TARGET_CAN_USE_DOLOOP_P for targets that do
1947 not support nested low-overhead loops. */
1950 can_use_doloop_if_innermost (const widest_int
&, const widest_int
&,
1951 unsigned int loop_depth
, bool)
1953 return loop_depth
== 1;
1956 /* Default implementation of TARGET_OPTAB_SUPPORTED_P. */
1959 default_optab_supported_p (int, machine_mode
, machine_mode
, optimization_type
)
1964 #include "gt-targhooks.h"