Merge -r 127928:132243 from trunk

[official-gcc.git] / gcc / ChangeLog

2008-01-10  Vladimir Makarov  <vmakarov@redhat.com>

        * reload1.c (compute_use_by_pseudos): Permits spilled registers in
        FROM.
        (temp_pseudo_reg_arr): New variable.
        (reload): Use instead temp_pseudo_reg_arr of pseudo_regs.  Move
        freeing to the function end.  Don't clear spilled_pseudos for IRA.
        Restore original insn chain for IRA.
        (calculate_needs_all_insns): Call IRA's mark_memory_move_deletion.
        (count_pseudo, count_spilled_pseudo): Check spilled pseudos.
        (alter_reg): Set up spilled_pseudos.
        (finish_spills): Set up pseudo_previous_regs only for spilled
        pseudos.  Call reassign_pseudos once for all spilled pseudos,
        pass more arguments.  Don't clear live_throughout and dead_or_set
        for spilled pseudos.

2008-01-10  Vladimir Makarov  <vmakarov@redhat.com>

        * reload1.c (compute_use_by_pseudos): Permits spilled registers in
        FROM.
        (temp_pseudo_reg_arr): New variable.
        (reload): Use instead temp_pseudo_reg_arr of pseudo_regs.  Move
        freeing to the function end.  Don't clear spilled_pseudos for IRA.
        Restore original insn chain for IRA.
        (calculate_needs_all_insns): Call IRA's mark_memory_move_deletion.
        (count_pseudo, count_spilled_pseudo): Check spilled pseudos.
        (alter_reg): Set up spilled_pseudos.
        (finish_spills): Set up pseudo_previous_regs only for spilled
        pseudos.  Call reassign_pseudos once for all spilled pseudos,
        pass more arguments.  Don't clear live_throughout and dead_or_set
        for spilled pseudos.

        * global.c (reg_becomes_live, build_insn_chain): Don't ignore
        spilled pseudos for IRA.
        
        * caller-save.c (calculate_local_save_info,
        save_call_clobbered_regs): Ignore spilled pseudos for IRA.
        
        * toplev.c (backend_init_target): Call init_ira.
        (backend_init): Move call of init_ira_once before
        backend_init_target.
        
        * ira.h (init_ira, sort_insn_chain, mark_memory_move_deletion):
        New function prototypes.
        (retry_ira_color): Rename to reassign_pseudos.  Change
        signature.

        * ira-int.h (allocno): New member dont_reassign_p.
        (ALLOCNO_DONT_REASSIGN_P): New macro.
        (memory_move_cost): Change element type.
        (register_move_cost): Change type.
        (register_may_move_in_cost, register_may_move_out_cost,
        reg_class_intersect): New arrays.
        (important_class_nums): Fix element type.
        (hard_reg_not_in_set_p): Make it static inline.
        (init_register_move_cost, init_ira_costs): New function
        prototypes.
        (allocno_conflict_index): Remove.
        (allocate_and_set_costs, allocate_and_copy_costs,
        allocate_and_set_or_copy_costs): New static inline functions.
        
        * ira-build.c (compress_allocno_conflict_vec,
        compress_conflict_vecs): New functions.
        (allocno_conflict_index): Remove.
        (allocno_conflict_check, curr_allocno_conflict_check_tick): New
        variables.
        (propagate_info_to_cap): Use allocate_and_copy_costs.
        (check_and_add_conflicts): Don't call allocno_conflict_index.
        (ira_flattening): Add some assertions.  Check that cost vectors
        have been allocated.  Don't call allocno_conflict_index.  Call
        compress_conflict_vecs.

        * ira.c (memory_move_cost, register_move_cost): Change types.
        (register_may_move_in_cost, register_may_move_out_cost,
        strict_class_subset_p): New variables.
        (setup_class_subset_and_move_costs): Rename to
        setup_class_subset_and_memory_move_costs.  Remove
        register_move_cost setup.  Don't consider no_unit_alloc_regs.  Add
        strict_class_subset_p setup.
        (setup_reg_class_intersect): Rename to
        setup_reg_class_intersect_union.  Don't consider
        no_unit_alloc_regs.  Add reg_class_union setup.
        (hard_reg_not_in_set_p): Move to ira-int.h.
        (setup_reg_subclasses): Use no_unit_alloc_regs instead of
        fixed_reg_set.  Don't consider no_unit_alloc_regs.
        (important_class_nums): Fix element type.
        (setup_cover_classes): Use no_unit_alloc_regs instead of
        fixed_reg_set.  Don't consider no_unit_alloc_regs.
        (setup_class_translate): Ditto.
        (reg_class_union): New variable.
        (init_register_move_cost, free_register_move_costs): New
        functions.
        (init_ira_once): Initialize register_move_cost,
        register_may_move_in_cost, register_may_move_out_cost.  Move some
        code to init_ira.
        (init_ira): New function.  Move some code from init_ira_once.
        Call free_register_move_costs and init_ira_costs.
        (calculate_allocation_cost): Check allocation of allocno hard reg
        cost vector.
        (basic_block_order_nums): New variable.
        (chain_freq_compare, chain_bb_compare, sort_insn_chain): New
        functions.
        (ira): Call sort_insn_chain.

        * ira-color.c (allocno_coalesced_p): New variable.
        (update_copy_costs): Use allocate_and_set_or_copy_costs.
        (assign_hard_reg): Clear and use
        processed_coalesced_allocno_bitmap only if allocno_coalesced_p.
        Use allocate_and_copy_costs.  Use allocno cover class cost if the
        hard register cost vector is not allocated.
        (get_coalesced_allocnos_best_class_and_freq): Use
        reg_class_intersect instead of reg_class_subintersect.
        (add_allocno_to_ordered_bucket): Use strict_class_subset_p.
        (push_allocno_to_stack): Clear and use
        processed_coalesced_allocno_bitmap only if allocno_coalesced_p.
        (setup_allocno_left_conflicts_num): Don't setup
        ALLOCNO_UPDATED_HARD_REG_COSTS and
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS.  Clear and use
        processed_coalesced_allocno_bitmap only if allocno_coalesced_p.
        (put_allocno_into_bucket): Don't setup
        ALLOCNO_UPDATED_HARD_REG_COSTS and
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS.
        (coalesced_allocno_conflict_p): Clear and use
        processed_coalesced_allocno_bitmap only if allocno_coalesced_p.
        (coalesce_allocnos): Setup allocno_coalesced_p.
        (color_allocnos): Add processing reg class NO_REGS.
        (color_pass): Propagate assignment of spilled allocno not
        mentioned in the subregion for the mixed algorithm.  Use
        allocate_and_set_costs.
        (move_spill_restore, mark_allocation_change): Check unallocated
        hard reg cost vectors.
        (setup_curr_costs): Don't setup ALLOCNO_UPDATED_HARD_REG_COSTS and
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS.  Use
        allocate_and_set_or_copy_costs.
        (mark_memory_move_deletion, allocno_reload_assign,
        pseudo_reg_compare, reassign_pseudos): New functions.
        (retry_ira_color): Remove.
        
        * ira-conflicts.c (add_insn_allocno_copies): Use
        allocate_and_set_costs.
        (allocno_conflict_p): Simplify the code.
        
        * ira-costs.c: Rename reg_class_subunion to reg_class_union
        everywhere.
        (cost_classes, cost_classes_num, cost_class_nums,
        max_struct_costs_size): New variables.
        (copy_cost): Use init_register_move_cost instead of
        init_move_cost.
        (record_reg_classes): Ditto.  Use cost_classes and
        cost_classes_num instead of important_classes and
        important_classes_num.  Use register_may_move_{in,out}_cost
        instead of may_move_{in,out}_cost.  Check reg class intersection
        for alt_cost.
        (record_address_regs): Use init_register_move_cost instead of
        init_move_cost.  Use cost_classes and cost_classes_num instead of
        important_classes and important_classes_num.  Use
        register_may_move_in_cost instead of may_move_in_cost.
        (scan_one_insn): Use cost_classes_num instead of
        important_classes_num.
        (print_costs): Use cost_classes and cost_classes_num instead of
        important_classes and important_classes_num.
        (find_allocno_class_costs): Initialize cost_classes and
        cost_class_nums.  Use cost_classes and cost_classes_num instead of
        important_classes and important_classes_num.
        (process_bb_node_for_hard_reg_moves): Use allocate_and_set_costs.
        (setup_allocno_cover_class_and_costs): Use cost_classes and
        cost_classes_num instead of important_classes and
        important_classes_num.
        (init_ira_costs_once): Move some code to init_ira_costs.  Initiate
        cost_classes.
        (free_ira_costs: New function.  Move some code from
        finish_ira_costs_once.
        (init_ira_costs): New function.  Move some code from
        init_ira_costs_once.  Use max_struct_costs_size instead of
        struct_costs_size.  Call free_ira_costs.  Allocate cost_classes.
        (finish_ira_costs_once): Move some code to finish_ira_costs.  Call
        free_ira_costs.
        (ira_costs): Use max_struct_costs_size instead of
        struct_costs_size.  Use allocate_and_set_costs.

        * ira-emit.c (modify_move_list): Remove allocation of hard reg
        cost vectors.

        * ira-lives.c (process_single_reg_class_operands): Add new
        parameter freq.  Calculate costs basing on the frequency.
        (process_bb_node_lives): Pass the frequency to
        process_single_reg_class_operands.
        
2007-12-17  Vladimir Makarov  <vmakarov@redhat.com>

        * doc/invoke.texi (fira-algoirthm): Remove prioirity coloring.
        Make mixed the default.

        * flags.h (ira_algorithm): Remove IRA_ALGORITHM_PRIORITY.

        * ira-color.c (priority_coloring):  Remove.
        (do_coloring): Don't call priority_coloring.

        * opts.c (common_handle_option): Remove priority coloring option.

        * toplev.c (flag_ira_algorithm): Assign IRA_ALGORITHM_MIXED.
        
        * ira-build.c (check_and_add_conflicts, ira_flattening): Increase
        threshold for internal_flag_ira_verbose.
        
2007-12-17  Vladimir Makarov  <vmakarov@redhat.com>

        * common.opt (fira-assign-after-call-split, fira-biased-coloring,
        fira-split-around-calls): Remove.
        (fdump-simple-rtl, fira-verbose): New options.
        (fira, fira-coalesce): Initiate by 0.

        * opts.c (common_handle_option):  Process flag_ira_verbose.

        * flags.h (flag_ira_verbose): New external definition.

        * toplev.h (flag_ira_assign_after_call_split,
        flag_ira_biased_coloring, flag_ira_split_around_calls):  Remove.

        * toplev.c (flag_ira_verbose): New external declaration.
        (finalize): Call finish_ira_once.

        * print-rtl.c (flag_simple):  Rename to flag_dump_simple_rtl.

        * doc/invoke.texi (-fno-ira-assign-after-call-split,
        -fira-biased-coloring, -fno-ira-split-around-calls):  Remove.
        (-fdump-simple-rtl, -fira-verbose): New options.

        * caller-save.c (insert_restore, insert_save): Use
        adjust_address_nv instead of adjust_address.  Check the mode by
        reg_save_code.

        * ira-call.c: Remove file.

        * ira-lives.c: New file.

        * Makefile.in (ira-live.o): Add
        (ira-call.o): Remove.
        (IRA_INT_H): Add alloc-pool.h.

        * ira.h (finish_ira_once): New external definition.

        * ira-int.h (internal_flag_ira_verbose, alloc_pool allocno_pool,
        copy_pool, allocno_live_range_pool, ira_loop_tree_height,
        max_point, start_point_ranges, finish_point_ranges,
        prohibited_mode_move_regs, important_class_nums,
        ira_curr_regno_allocno_map, allocno_set_words): New external
        definitions.
        (loop_tree_node_t, allocno_live_range_t): New typedefs.  Use them
        everywhere.
        (ira_loop_tree_node): Rename to loop_tree_node.
        (loop_tree_node): New member level.
        (allocno_live_range): New structure.
        (allocno): New members nrefs, live_ranges,
        total_conflict_hard_regs, conflict_allocnos_num,
        total_conflict_allocnos_num, mem_optimized_dest,
        mem_optimized_dest_p, total_no_stack_reg_p.  Remove members
        conflict_allocno_vec_active_size and original_memory_cost.  Rename
        member curr_hard_reg_costs to updated_hard_reg_costs.
        (ALLOCNO_TOTAL_CONFLICT_ALLOCNOS_NUM,
        ALLOCNO_TOTAL_CONFLICT_HARD_REGS, ALLOCNO_CONFLICT_ALLOCNOS_NUM,
        ALLOCNO_TOTAL_CONFLICT_ALLOCNOS_NUM, ALLOCNO_NREFS,
        ALLOCNO_MEM_OPTIMIZED_DEST, ALLOCNO_MEM_OPTIMIZED_DEST_P,
        ALLOCNO_TOTAL_NO_STACK_REG_P, ALLOCNO_LIVE_RANGES): New access
        macros.
        (ALLOCNO_CONFLICT_ALLOCNO_VEC_ACTIVE_SIZE,
        ALLOCNO_ORIGINAL_MEMORY_COST): Remove.
        (ALLOCNO_CURR_CONFLICT_HARD_REG_COSTS): Rename to
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS.
        (allocno_copy): New member loop_tree_node.
        (INT_BITS, INT_TYPE, EXECUTE_IF_SET_IN_ALLOCNO_SET): Move from
        ira-conflicts.c.
        (SET_ALLOCNO_SET_BIT, CLEAR_ALLOCNO_SET_BIT,
        TEST_ALLOCNO_SET_BIT): New macros.
        (ira_reallocate, allocno_conflict_index, add_allocno_conflict,
        create_allocno_live_range, finish_allocno_live_range,
        add_allocno_copy_to_list, swap_allocno_copy_ends_if_necessary,
        remove_allocno_copy_from_list, add_allocno_copy, ira_flattening,
        finish_ira_costs_once, rebuild_start_finish_chains,
        print_live_range_list, debug_live_range_list,
        debug_allocno_live_ranges, debug_live_ranges,
        create_allocno_live_ranges, finish_allocno_live_ranges,
        allocno_conflict_p, loop_edge_freq): New external function
        definitions.
        (hard_reg_in_set_p, original_regno_call_crossed_p,
        ira_max_regno_before, ira_max_regno_call_before): Remove.
        (traverse_loop_tree): Add new parameter type.
        (create_copy): Ditto.
        (debug_conflicts, ira_emit, add_allocno_copy): Add parameter.
        (debug_ira_call_data, split_around_calls, get_around_calls_regno):
        Remove.
        
        * ira.c (setup_prohibited_mode_move_regs): New function.
        (internal_flag_ira_verbose, allocno_pool, copy_pool,
        allocno_live_range_pool, important_class_nums): New external
        variables.
        (IRA_NO_OBSTACK): Uncomment it.
        (ira_reallocate): New function.
        (setup_cover_classes): Set up important_class_nums.
        (finish_ira_once): New function.
        (prohibited_mode_move_regs,
        prohibited_mode_move_regs_initialized_p): New global variables.
        (setup_prohibited_mode_move_regs): New function.
        (setup_reg_renumber): Remove parameters.
        (setup_allocno_assignment_from_reg_renumber): Rename to
        setup_allocno_assignment_flags.  Set up ALLOCNO_ASSIGNED_P.
        (calculate_allocation_cost): Use ALLOCNO_UPDATED_MEMORY_COST.
        (ira_max_regno_before, ira_max_regno_call_before): Remove.
        (ira): Set up internal_flag_ira_verbose.  Call
        setup_prohibited_mode_move_regs.  Create and destroy allocno,
        copy, and live range pools.  Remove original_regno_call_crossed_p.
        Report major passes.  Use argument for ira_emit.  Call
        ira_flattening and df_analyze.  Remove live range splitting around
        calls.
        
        * ira-build.c (setup_loop_tree_level, rebuild_regno_allocno_maps,
        expand_calls, compress_calls, allocno_conflict_index,
        add_to_allocno_conflict_vec, propagate_info_to_cap,
        copy_allocno_live_range, copy_allocno_live_range_list,
        finish_allocno, finish_copy,
        propagate_info_to_loop_tree_node_caps, merge_ranges,
        common_loop_tree_node_dominator, check_and_add_conflicts,
        add_conflict_with_underlying_allocnos, ira_flattening): New
        functions.
        (check_coalesced_allocnos): Remove.
        (ira_loop_tree_height): New external variable.
        (form_loop_tree): Call setup_loop_tree_level.
        (initiate_calls): Allocate a bit more.  (create_allocno): Use
        pool_alloc.  Set up ALLOCNO_TOTAL_CONFLICT_ALLOCNOS_NUM,
        ALLOCNO_TOTAL_CONFLICT_HARD_REGS, ALLOCNO_NREFS,
        ALLOCNO_TOTAL_NO_STACK_REG_P, ALLOCNO_MEM_OPTIMIZED_DEST,
        ALLOCNO_MEM_OPTIMIZED_DEST_P, ALLOCNO_UPDATED_MEMORY_COST, and
        ALLOCNO_LIVE_RANGES.  Rename
        ALLOCNO_CONFLICT_ALLOCNO_VEC_ACTIVE_SIZE,
        ALLOCNO_CURR_HARD_REG_COSTS, and
        ALLOCNO_CURR_CONFLICT_HARD_REG_COSTS to
        ALLOCNO_CONFLICT_ALLOCNOS_NUM, ALLOCNO_UPDATED_HARD_REG_COSTS, and
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS.
        (add_allocno_conflict): Make it external.  Use
        add_to_allocno_conflict_vec.
        (create_cap_allocno): Move part of code to propagate_info_to_cap.
        (finish_allocnos): Use finish_allocno.
        (add_allocno_copy_to_list, remove_allocno_copy_from_list,
        swap_allocno_copy_ends_if_necessary, add_allocno_copy): Move from
        ira-conflicts.c.  Make them external.
        (create_copy): Use pool_alloc.  Add parameter loop_tree_node.
        (finish_copies): Use finish_copy.
        (ira_curr_regno_allocno_map): New external variable.
        (traverse_loop_tree): Add parameter bb_first_p.
        (create_insn_allocnos): Update ALLOCNO_NREFS.
        (create_loop_tree_node_allocnos): Traverse loop tree nodes with
        BBs first.  Update ALLOCNO_NREFS.
        (create_loop_tree_node_caps): Move part of code to
        propagate_info_to_loop_tree_node_cap.
        (regno_top_level_allocno_map): New global variable.
        (ira_build): Create caps before build conflicts.  Call
        create_allocno_live_ranges.  Propagate info to caps.  Report
        statistics.
        (ira_destroy): Call finish_allocno_live_ranges.

        * ira-conflicts.c (set_allocno_live, clear_allocno_live,
        record_regno_conflict, mark_reg_store, mark_reg_clobber,
        mark_reg_conflicts, mark_reg_death): Remove.
        (add_insn_allocno_copies, add_copies): New functions.
        (add_allocno_copy_to_list, remove_allocno_copy_from_list,
        swap_allocno_copy_ends_if_necessary, add_allocno_copy): Remove.
        (add_allocno_copies): Rename to add_insn_allocno_copies.  Use
        ira_curr_regno_allocno_map and add_insn_allocno_copies.
        (single_reg_class, single_reg_operand_class,
        process_single_reg_class_operands, process_bb_node_for_conflicts):
        Remove.
        (INT_BITS, INT_TYPE, EXECUTE_IF_SET_IN_ALLOCNO_SET): Move to
        ira-int.h.
        (allocnos_live_bitmap, SET_ALLOCNO_CONFLICT_ROW,
        CLEAR_ALLOCNO_CONFLICT_ROW, TEST_ALLOCNO_CONFLICT_ROW): Remove.
        (SET_ALLOCNO_LIVE, CLEAR_ALLOCNO_LIVE, TEST_ALLOCNO_LIVE):
        Use {SET, CLEAR, TEST}_ALLOCNO_SET_BIT.
        (allocno_row_words, hard_regs_live, curr_bb_node,
        curr_regno_allocno_map, curr_reg_pressure): Remove.
        (CONFLICTP): Rename to CONFLICT_P.
        (regs_set): Remove.
        (propagate_allocno_info): Use ALLOCNO_TOTAL_CONFLICT_HARD_REGS.
        Set up ALLOCNO_CALLS_CROSSED_START.
        (allocno_conflict_p): New function.
        (allocno_reg_conflict_p): Use allocno_conflict_p.
        (build_allocno_conflict_vects): Divide original and propagated
        conflicts.
        (print_hard_reg_set): New function.
        (print_conflicts): Use print_hard_reg_set.  Set up mark for the
        start of propagated conflicts.
        (debug_conflicts): Add parameter.
        (ira_build_conflicts): Call add_copies.  Set up
        ALLOCNO_TOTAL_CONFLICT_HARD_REGS.

        * ira-costs.c (struct costs): Make cost allocated dynamically.
        (struct_costs_size, temp_cots, op_costs, this_op_costs): New
        variables.
        (costs): Rename to total_costs.
        (COSTS_OF_ALLOCNO): New macro.
        (curr_regno_allocno_map): Remove.  Use ira_curr_regno_allocno_map
        instead.
        (record_reg_classes): Check NO_REGS in allocno_pref.
        (record_address_regs): Use COSTS_OF_ALLOCNO.
        (scan_one_insn): Ditto.
        (print_costs): Ditto.
        (find_allocno_class_costs): Ditto.  Pass additional argument to
        traverse_loop_tree.  Set up NO_REGS if memory is cheaper.
        (setup_allocno_cover_class_and_costs): Use
        ALLOCNO_UPDATED_MEMORY_COST instead of
        ALLOCNO_ORIGINAL_MEMORY_COST, ALLOCNO_UPDATED_HARD_REG_COSTS
        instead of ALLOCNO_CURR_HARD_REG_COSTS, and
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS instead of
        ALLOCNO_CURR_CONFLICT_HARD_REG_COSTS.  Pass additional argument to
        traverse_loop_tree.
        (init_ira_costs_once): Allocate init_cost, op_costs,
        this_op_costs, temp_costs.
        (finish_ira_costs_once): New function.
        
        * ira-color.c: Use ALLOCNO_UPDATED_MEMORY_COST instead of
        ALLOCNO_ORIGINAL_MEMORY_COST, ALLOCNO_UPDATED_HARD_REG_COSTS
        instead of ALLOCNO_CURR_HARD_REG_COSTS, and
        ALLOCNO_UPDATED_CONFLICT_HARD_REG_COSTS instead of
        ALLOCNO_CURR_CONFLICT_HARD_REG_COSTS.  Use
        ALLOCNO_TOTAL_CONFLICT_HARD_REGS instead of
        ALLOCNO_CONFLICT_HARD_REGS.
        (processed_allocno_bitmap): Rename into
        processed_coalesced_allocno_bitmap.
        (allocno_cost_compare_func): Use ALLOCNO_UPDATED_MEMORY_COST
        instead of ALLOCNO_MEMORY_COST.
        (assign_hard_reg): Remove biased coloring.
        (add_allocno_to_ordered_bucket): Check cover class first.
        (loop_edge_freq): Make it external.
        (setup_allocno_left_conflicts_num): Check that conflicting
        allocnos of one class.
        (allocno_conflict_p): Rename to coalesced_allocno_conflict_p.
        (color_pass): Check pressure in the loop (not in subloops) for
        mixed algorithm.
        (allocno_priorities): New variable.
        (start_allocno_priorities, finish_allocno_priorities): New
        functions.
        (allocno_priority_compare_func): Use allocno_priorities.
        (priority_coloring): Call start_allocno_priorities and
        finish_allocno_priorities.
        (do_coloring): Pass additional argument to traverse_loop_tree.
        
        * ira-emit.c (struct move): Add member insn.
        (create_move): Initialize member insn.
        (generate_edge_moves): Set up ALLOCNO_MEM_OPTIMIZED_DEST and
        ALLOCNO_MEM_OPTIMIZED_DEST_P.
        (change_loop): Check prohibited_mode_move_regs.
        (curr_jump_map, can_move_through_p): Remove.
        (unify_moves): Don't move through jump.
        (modify_move_list): Set up attributes for new allocno used for
        breaking dependency loops.
        (emit_move_list): Set up insn codes.
        (update_costs, add_range_and_copies_from_move_list,
        add_ranges_and_copies): New functions.
        (ira_emit): Add a parameter.  Call add_ranges_and_copies.
        
2007-10-09  Vladimir Makarov  <vmakarov@redhat.com>

        * toplev.h (flag_ira_coalesce): New external variable.

        * ira-int.h (allocno): New members first_coalesced_allocno,
        next_coalesced_allocno.
        (ALLOCNO_FIRST_COALESCED_ALLOCNO, ALLOCNO_NEXT_COALESCED_ALLOCNO):
        New macros.
        (reg_class_subintersect): New external variable.

        * ira-color.c (processed_allocno_bitmap): New variable.
        (allocno_cost_compare_func, print_coalesced_allocno): New
        functions.
        (assign_hard_reg): Process coalesced allocnos.
        (get_coalesced_allocnos_best_class_and_freq): New function.
        (add_allocno_to_ordered_bucket): Use the function.
        (push_allocno_to_stack, push_allocnos_to_stack): Process coalesced
        allocnos.
        (remove_allocno_from_bucket_and_push, pop_allocnos_from_stack):
        Use print_coalesced_allocno.
        (setup_allocno_available_regs_num,
        setup_allocno_left_conflicts_num): Process coalesced allocnos.
        (copy_freq_compare_func, allocno_conflict_p, coalesce_allocnos):
        New functions.
        (color_allocnos): Allocate/free processed_allocno_bitmap.  Call
        coalesce_allocnos.
        (priority_coloring): Allocate/free processed_allocno_bitmap.

        * ira-build.c (check_coalesced_allocnos): New function.
        (create_allocno): Initiate next_coalesced_allocno,
        first_coalesced_allocno.
        (create_cap_allocno): Check  next_coalesced_allocno,
        first_coalesced_allocno.

        * common.opt (fira-coalesce): New option.

        * ira.c (setup_reg_class_intersect): New function.
        (reg_class_subintersect): New global variable.
        (init_ira_once): Call setup_reg_class_intersect.

        * doc/invoke.texi (-fira-coalescing): New option.
        
2007-09-20  Vladimir Makarov  <vmakarov@redhat.com>

        * ira-build.c (create_allocno): Initialize ALLOCNO_BEST_CLASS.

        * ira-color.c (add_allocno_to_ordered_bucket): Use
        ALLOCNO_BEST_CLASS.

        * ira-costs.c (setup_allocno_cover_class_and_costs): Initialize
        ALLOCNO_BEST_CLASS.

        * ira-int.h (allocno): New member best_class.
        (ALLOCNO_BEST_CLASS): New macro.
        
2007-09-19  Vladimir Makarov  <vmakarov@redhat.com>

        * ira-int.h (allocno): Remove calls_crosed.  Add
        calls_crossed_start.
        (ALLOCNO_CALLS_CROSSED): Remove.
        (ALLOCNO_CALLS_CROSSED_START): Add.
        (build_df): Remove.
        (regno_calls, add_regno_call): New.
        
        * ira-build.c (initiate_calls, finish_calls, add_regno_call): New
        functions.
        (regno_calls, regno_calls_num): New globals.
        (build_df): Remove.
        (add_loop_to_tree): Use loop_outer.
        (form_loop_tree): Ditto.
        (initiate_allocnos, create_cap_allocno): Remove
        ALLOCNO_CALLS_CROSSED.  Add ALLOCNO_CALLS_CROSSED_START.
        (finish_allocnos): Remove ALLOCNO_CALLS_CROSSED.
        (create_bb_allocnos, create_loop_allocnos): Use DF_LR_{IN,OUT}
        instead of DF_UPWARD_LIVE_{IN,OUT}.
        (ira_build): Remove adding df problems and call of
        free_dominance_info.  Call initiate_calls.
        (ira_destroy): Add free_dominance_info and finish_calls.  Remove
        df_finish.

        * ira-emit.c (change_regs): Return the result.
        (generate_edge_moves): Use DF_LR_{IN,OUT} instead of
        DF_UPWARD_LIVE_{IN,OUT}.
        (change_loop): Call df_insn_rescan and df_note_rescan if there is
        a change.
        (can_move_through_p): Use hard_reg_set_equal_p instead of
        GO_IF_HARD_REG_EQUAL.

        * ira-costs.c (copy_cost, record_reg_classes,
        record_address_regs): Call init_move_cost if it is necessary.
        (tune_allocno_costs_and_cover_classes): Use regno_calls and
        ALLOCNO_CALLS_CROSSED_START instead of ALLOCNO_CALLS_CROSSED.

        * ira-conflicts.c (n_regs_set): Remove.
        (regs_set): Make it a vector.
        (mark_reg_store, mark_reg_clobber): Change 2nd parameter type.
        (process_bb_node_for_conflicts): Use DF_LR_IN instead of
        DF_UPWARD_LIVE_IN.  Call add_regno_call.  Initialize
        ALLOCNO_CALLS_CROSSED_START.  Remove ALLOCNO_CALLS_CROSSED.
        (build_conflict_bit_table): Initialize and finalize regs_set.
        (propagate_allocno_info): Remove ALLOCNO_CALLS_CROSSED.
        Initialzie ALLOCNO_CALLS_CROSSED_START.
        
        * ira-color.c (setup_allocno_available_regs_num,
        setup_allocno_left_conflicts_num): New functions.
        (update_allocno_avaialable_regs): Remove.
        (sorted_allocnos, allocno_stack_varray): Move upper.
        (assign_hard_reg): Use hard_reg_set_subset_p instead of
        GO_IF_HARD_REG_SUBSET.
        (loop_edge_freq): Use DF_LR_{IN,OUT} instead of
        DF_UPWARD_LIVE_{IN,OUT}.
        (put_allocno_into_bucket): Call setup_allocno_available_regs_num
        and setup_allocno_left_conflicts_num.
        (print_loop_title): Use loop_depth.
        (allocno_priority_compare_func): Remove REG_N_REFS and
        REG_LIVE_LENGTH.
        (retry_ira_color): Use SET_REGNO.  Use ALLOCNO_CALLS_CROSSED_NUM
        instead of ALLOCNO_CALLS_CROSSED.
        (collect_pseudo_call_clobbered_regs):  Use regno_calls and
        ALLOCNO_CALLS_CROSSED_START instead of ALLOCNO_CALLS_CROSSED.

        * ira-call.c (init_ira_call_data): Add argument to
        post_order_compute.
        (n_regs_set): Remove.
        (regs_set): Make it a vector.
        (mark_reg_store, mark_reg_clobber): Change 2nd parameter type.
        (mark_referenced_regs): Check null x.
        (put_save_restore_and_calculate_local_info): Initialize and
        finalize regs_set.  Use DF_LR_{IN,OUT} instead of
        DF_UPWARD_LIVE_{IN,OUT}.  Use loop_outer.
        (do_init_nothing): Remove.
        (save_trans_fun, save_con_fun_0, restore_trans_fun,
        restore_con_fun_0): Remove 1st parameter.
        (save_con_fun_n, restore_con_fun_n): Ditto.  Use
        df_simple_dataflow instead of df_analyze_problem.
        (put_save_restore): Use DF_LR_IN instead of DF_UPWARD_LIVE_IN.
        Call mark_all_referenced_regs for all insn.  Use bitmap progress.
        (get_move_insn): New function.
        (put_save_restore_and_calculate_local_info, put_save_restore): Use
        the function.

        * ira.c (insn_contains_asm_1, insn_contains_asm,
        compute_regs_asm_clobbered, expand_reg_info): New functions.
        (setup_class_subset_and_move_costs): Use hard_reg_set_subset_p
        instead of GO_IF_HARD_REG_SUBSET.
        (setup_reg_subclasses, setup_class_translate): Ditto. Use
        hard_reg_set_equal_p instead of GO_IF_HARD_REG_EQUAL.
        (setup_eliminable_regset): Call compute_regs_asm_clobbered.  Use
        df_set_regs_ever_live instead of regs_ever_live.
        (setup_reg_renumber): Check reg_equiv_const and
        reg_equiv_invariant_p.
        (ira): Remove no_new_pseudos. Add df-problems and analyze.  Call
        regstat_init_n_sets_and_refs and regstat_compute_ri.  Remove
        delete_unreachable_blocks.  Use expand_reg_info.  Move
        setup_preferred_alternate_classes upper.  Remove life_analysis.
        Prepare df-insfrastructure for reload.

        * regclass.c (setup_reg_classes): Don't use reg_pref_buffer.

        * function.[ch] (get_call_invalidated_used_regs): Change 1st
        parameter type.
        
        * gengtype.c (main): Add HARD_REG_SET.

        * alias.c (value_addr_p): New function.
        (nonoverlapping_memrefs_p): Use it.

        * caller-save.c (init_caller_save): Use DF_LR_TOP for IRA instead
        of global_live_at_start.
        
2007-05-04  Vladimir Makarov  <vmakarov@redhat.com>

        * ira-conflicts.c: Change pseudo to allocno.
        * ira-color.c: Ditto.
        * ira-emit.c: Ditto.
        * ira-build.c: Ditto.
        * ira.c: Ditto.
        (important_classes_num, important_classes): New variables.
        (setup_cover_classes): Set up the variable values.
        * ira-costs.c: Ditto.
        (record_reg_classes, record_address_regs, scan_one_insn,
        find_pseudo_class_costs):  Process only important classes.
        * ira-call.c: Ditto.  Add comments about placement optimization.
        * ira-int.h: Ditto.
        (allocno) Use one bit field for boolean members.
        (important_classes_num, important_classes): New external
        definitions.

2007-03-16  Vladimir Makarov  <vmakarov@redhat.com>

        * flags.h (ira_algorithm): Add IRA_ALGORITHM_MIXED.

        * opts.c (common_handle_option): Set up IRA_ALGORITHM_MIXED from
        the option argument.
        
        * common.opt (fira-assign-after-call-split, fira-propagate-cost,
        fira-split-around-calls): New options.
        (fira-ipra): Switch off by default.
        
        * doc/invoke.texi (-fira-algorithm): Add mixed algorithm.
        (-fno-ira-ipra): Rename to -fira-ipra.
        (-fno-ira-assign-after-call-split, -fira-propagate-cost,
        -fno-ira-split-around-calls): Add new options.
        
        * ira-conflicts.c (curr_reg_pressure): New variable.
        (set_pseudo_live, clear_pseudo_live, mark_reg_store,
        mark_reg_death): Update reg pressure.
        (add_pseudo_copies): Decrease cost for copy with dead pseudo.
        (process_bb_node_for_conflicts): Propagate reg pressure.
        (build_conflict_bit_table): Call process_bb_node_for_conflicts in
        preorder.
        (ira_build_conflicts): Add new coloring algorithm.
        (ira_build_conflicts): Add flag_ira_split_around_calls.

        * ira-emit.c (change_loop): Print allocation on the region
        borders.  Use pseudo_cap_member instead of regno.
        (modify_move_list): Add parameter to create pseudo.
        (ira_emit): Use pseudo_cap_member instead of regno.
        
        * ira-build.c (create_loop_tree_nodes): Set up initial reg
        pressure.
        (create_pseudo): Add parameter.  Use the parameter value instead
        of regno.
        (print_expanded_pseudo): Use pseudo_cap_member instead of regno.
        (create_cap_pseudo, create_insn_pseudos, create_bb_pseudos,
        create_loop_pseudos): Add argument to create_pseudo call.
        (create_pseudos, ira_build): Process IRA_ALGORITHM_MIXED.
        (create_loop_tree_node_caps):  Create cap pseudo for all pseudos
        not having father pseudo.
        
        * final.c (rest_of_handle_final): Process INCOMING_REGNO.

        * toplev.h (flag_ira_assign_after_call_split,
        flag_ira_propagate_cost, flag_ira_split_around_calls): New flags.

        * caller-save.c (save_call_clobbered_regs): Move declaration
        this_insn_sets to the function start.
        
        * ira-int.h (ira_loop_tree_node): Add reg_pressure.
        (pseudo): More comments for regno and cap_member
        (original_regno_call_crossed_p, ira_max_regno_before,
        ira_max_regno_call_before): New external variables.
        (create_pseudo): Add parameter.
        (reassign_conflict_pseudos, debug_ira_call_data,
        split_around_calls, get_around_calls_regno): New function
        prototypes.

        * ira-color.c (assign_hard_reg): Set best_hard_regno and
        conflict_regs earlier.  Check register availability earlier.
        Ignore conflict and copy cost for PSEUDO_MAY_BE_SPILLED_P.
        (calculate_pseudo_spill_cost): Use pseudo_cap instead of regno.
        Check father pseudo instead of subloop pseudos.
        (pop_pseudos_from_stack): Set up PSEUDO_ASSIGNED_P for NO_REGS
        pseudo.
        (print_loop_title): Print reg pressure.
        (color_pass): Use PSEUDO_CAP_MEMBER instead of regno.  Add mixed
        coloring algorithm.
        (move_spill_restore): Use PSEUDO_CAP_MEMBER instead of regno.  Use
        subloop pseudos instead of father pseudo for cost calculation.
        (setup_curr_costs, reassign_conflict_pseudos): New functions.
        (retry_ira_color): Don't allocate call used registers when
        flag_caller_saves or flag_ira_split_around_calls.  Call
        setup_curr_cost.  Print about spilling pseudo split around calls.
        (reuse_stack_slot): Choose the slot with minimal memory-memory
        costs.

        * ira.c (setup_reg_renumber): Add 2 parameters.  Use cap_number
        instead of regno.  Initialize caller_save_needed.  Make assertion
        stricter.
        (setup_pseudo_assignment_from_reg_renumber): New function.
        (calculate_allocation_cost): Add assertion.
        (print_redundant_copies): Use cap_number instead of regno.
        (original_regno_call_crossed_p, ira_max_regno_before,
        ira_max_regno_call_before): New global variables.
        (ira): Process IRA_ALGORITHM_MIXED.  Set up
        ira_max_regno_call_before and ira_max_regno_before.  New arguments
        for setup_reg_renumber.  Reassign if pseudo changed its class.
        Split pseudos around the call if necessary.  Reassign if a pseudo
        is split.

        * ira.h: New year for Copyright.

        * ira-costs.c (reg_pref): Rename to pseudo_pref.
        (reg_pref_buffer): rename to pseudo_pref_buffer.
        (find_pseudo_class_costs): Initialize best_cost and best_class.
        Process IRA_ALGORITHM_MIXED.  Find best cover class for regno.
        (process_bb_node_for_hard_reg_moves): Process IRA_ALGORITHM_MIXED.

        * Makefile.in (ira-call.o): Add new file.

        * reload1.c (calculate_needs_all_insns): Remove unnecessary
        memory-memory move.

        * ira-call.c: New file.
        
2007-02-09  Vladimir Makarov  <vmakarov@redhat.com>

        * common.opt (fipra): Rename to fira-ipra.  Make it default.
        (fira-move-spills, fira-share-save-slots, fira-share-spill-slots):
        New.
        * toplev.h (flag_ipra): Rename to flag_ira_ipra.
        (flag_ira_move_spills, flag_ira_share_save_slots,
        flag_ira_share_spill_slots): New external definitions.
        * doc/invoke.texi (-fipra): Rename to -fno-ira-ipra. 
        (-fno-ira-move-spills, -fno-ira-share-save-slots,
        -fno-ira-share-spill-slots): New options.
        * function.c (get_call_invalidated_used_regs): Rename flag_ipra to
        flag_ira_ipra.
        * ira-costs.c (tune_pseudo_costs_and_cover_classes): Ditto.
        * caller-save.c (setup_save_areas): Use flag_ira_share_save_slots.
        Rename flag_ipra to flag_ira_ipra.
        (flag_ira_share_save_slots): Use flag_ira_move_spills.
        * ira-color.c (assign_hard_reg): Skip pseudos with different cover
        class.
        (reuse_stack_slot): Use flag_ira_share_spill_slots.
        * config/arm/arm.h (IRA_COVER_CLASSES): New macro.
        
2007-02-31  Vladimir Makarov  <vmakarov@redhat.com>

        * reload.h (debug_save_data): New definition.
        
        * caller-save.c (struct bb_info): New.
        (BB_INFO, BB_INFO_BY_INDEX): New macros.
        (calculate_local_save_info, set_up_bb_rts_numbers, rpost_cmp,
        calculate_save_in_out, calculate_save_here,
        make_global_save_analysis, print_hard_reg_set_and_mode,
        print_hard_reg_set, print_save_data, debug_save_data,
        set_hard_reg_saved): New functions.
        (save_call_clobbered_regs): Make global save analysis and use it
        to put save/restore code.
        (insert_one_insn): Check CODE_LABEL.

2007-01-19  Vladimir Makarov  <vmakarov@redhat.com>

        * toplev.h (flag_ipra): New external definition.

        * common.opt (fipra): New option.

        * doc/invoke.texi (-fipra); Document the option.

        * cgraph.h (cgraph_node): New member function_used_regs.

        * cgraph.c (cgraph_create_node): Initialize function_used_regs.

        * final.c (update_regs_ever_live): New function.
        (rest_of_handle_final): Set up function_used_regs and
        call_used_regs.

        * ira-build.c (ira_build): Clear function call_used_regs.

        * function.h: Add hard-reg-set.h header.
        (emit_status): New member call_used_regs.
        (get_call_invalidated_used_regs): New definition.

        * function.c (get_call, get_call_invalidated_used_regs): New
        functions.

        * Makefile.in (FUNCTION_H): Add hard-reg-set.h.
        (caller-save.o): Add dependence on output.h and ira.h

        * regrename.c (copyprop_hardreg_forward_1): Use function
        get_call_invalidated_used_regs.

        * ira-conflicts.c (process_bb_node_for_conflicts): Ditto.

        * postreload-gcse.c (record_opr_changes,
        reg_set_between_after_reload_p, reg_used_between_after_reload_p):
        Ditto.

        * postreload.c (reload_combine, reload_cse_move2add): Ditto.

        * rtlanal.c (reg_set_between_p): Ditto.

        * flow.c (propagate_one_insn): Ditto.

        * df-scan.c (df_insn_refs_record): Ditto.

        * gcse.c (compute_hash_table_work, compute_store_table): Ditto.

        * cselib.c (cselib_process_insn): Ditto.

        * loop-iv.c (simplify_using_assignment): Ditto.

        * sched-deps.c (sched_analyze): Ditto.

        * combine.c (record_dead_and_set_regs): Ditto.

        * resource.c (mark_set_resources, mark_set_resources): Ditto.

        * var-tracking.c (var-tracking.c): Ditto.

        * reload1.c (reload): Ditto.

        * cse.c (invalidate_for_call): Ditto.  Add parameter.
        (cse_insn): Pass the parameter.

        * ira.h (try_to_migrate): Remove the definition.
        (collect_pseudo_call_clobbered_regs): New external definition.

        * ira-color.c (collect_pseudo_call_clobbered_regs): New function.

        * ira-costs.c (tune_pseudo_costs_and_cover_classes): Add cost
        calculation when IPRA is used.

        * caller-save.c: Include headers output.h and ira.h.
        (saved_hard_reg): New structure.
        (hard_reg_map, hard_reg_map, all_saved_regs): New variables.
        (all_saved_regs, new_saved_hard_reg, finish_saved_hard_regs,
        saved_hard_reg_compare_func): New functions.
        (setup_save_areas): Add code for sharing stack slots.
        (save_call_clobbered_regs): Use function
        get_call_invalidated_used_regs.
        
2007-01-12  Vladimir Makarov  <vmakarov@redhat.com>

        * doc/tm.texi (IRA_HARD_REGNO_ADD_COST_MULTIPLIER): New macro.

        * ira-conflicts.c (add_pseudo_copies): Add copy between output and
        died operand pseudos.

        * ira.c (setup_cover_classes, setup_class_translate): Define and
        call only when IRA_COVER_CLASSES is defined.
        (no_alloc_regs): Rename to no_unit_alloc_regs.
        (setup_eliminable_regset): Set up no_alloc_regs.

        * ira-costs.c (tune_pseudo_costs_and_cover_classes): Modify cost
        if IRA_HARD_REGNO_ADD_COST_MULTIPLIER is defined.

        * config/s390/s390.h (IRA_COVER_CLASSES,
        IRA_HARD_REGNO_ADD_COST_MULTIPLIER(regno)): Define.
        
2006-12-22  Vladimir Makarov  <vmakarov@redhat.com>

        * rtl.h (setup_reg_classes): New function prototype.
        
        * regclass.c (setup_reg_classes): New function.

        * global.c (global_alloc): Dump information about register
        assigning.

        * ira-int.h (ira_build): Change prototype signature.

        * ira-color.c (pseudo_compare_func): Rename to
        pseudo_priority_compare_func.
        (priority_coloring): Dump information about register
        assigning.

        * ira-build.c (ira_build): Return true if we have loops for the
        allocation.

        * ira.c (setup_preferred_alternate_classes): New function.
        (ira): Use it instead of regclass.  Rebuild only if we have loops.

2006-12-15  Vladimir Makarov  <vmakarov@redhat.com>

        * ira.h, ira-int.h, ira.c, ira-build.c, ira-costs.c
        ira-conflicts.c, ira-color.c, ira-emit.c: New files.

        * flags.h (ira_algorithm): New enumeration.
        (flag_ira_algorithm): New external variable declaration.

        * tree-pass.h (pass_ira): New external variable declaration.

        * toplev.c (ira.h): New include.
        (flag_ira_algorithm): New global variable.
        (backend_init): Call init_ira_once.

        * toplev.h (flag_ira, flag_ira_biased_coloring): New external
        variable declarations.

        * regs.h (contains_reg_of_mode, move_cost, may_move_in_cost,
        may_move_out_cost): New external variable declarations.
        
        * caller-save.c (no_caller_save_reg_set): New global variable.
        (init_caller_save): Set up no_caller_save_reg_set.
        
        * global.c (eliminable_regset): Make it external.
        (gate_handle_global_alloc): New function.
        (pass_global_alloc): Add the gate function.

        * opts.c (decode_options):  Print the warning for -fira.
        (common_handle_option): Process -fira-algorithm option.

        * timevar.def (TV_IRA): New pass.

        * hard-reg-set.h (no_caller_save_reg_set): New external variable
        declaration.

        * regmove.c (regmove_optimize): Don't do replacement of output
        operands by input operands.
        (rest_of_handle_regmove): Don't do CFG cleanup for IRA.

        * local-alloc.c (update_equiv_regs): Make it external.  Return
        true if jump label rebuilding should be done.
        (gate_handle_local_alloc): New function.
        (pass_local_alloc): Add the gate function.

        * alias.c (stack_addr_p): New function.
        (nonoverlapping_memrefs_p): Add code for IRA.

        * common.opt (fira, fira-algorithm, fira-biased-coloring): New
        options.

        * regclass.c (contains_reg_of_mode, move_cost, may_move_in_cost,
        may_move_out_cost): Make the variables external.
        
        * rtl.h (eliminable_regset): New external variable declaration.
        (update_equiv_regs): New external function definition.

        * Makefile.in (IRA_INT_H): New definition.
        (OBJS-common): Add ira.o, ira-build.o, ira-costs.o,
        ira-conflicts.o, ira-color.o, and ira-emit.o.
        (reload1.o, toplev.o): Add dependence on ira.h.
        (ira.o, ira-build.o, ira-costs.o, ira-conflicts.o, ira-color.o,
        ira-emit.o): New entries.

        * passes.c (pass_ira): New pass.

        * reload1.c (alter_reg): Add a new parameter.
        (pseudo_reg_compare): New function.
        (reload): Sort pseudos for IRA.  Call alter_reg with the
        additional parameter.
        (count_spilled_pseudo): New variable freq.  Use it.
        (alter_reg): Add code for IRA.
        (eliminate_regs_1, finish_spills, emit_input_reload_insns,
        delete_output_reload): Use additional parameter for alter_reg.
        (finish_spills, emit_input_reload_insns, delete_output_reload):
        Call mark_allocation_change.
        (finish_spills): Call retry_ira_color.
        
        * doc/invoke.texi: Describe new options -fira,
        -fira-biased-coloring, and -fira-algorithm.
        
        * doc/passes.texi: Decribe IRA.

        * doc/tm.texi:  Decribe macro IRA_COVER_CLASSES.
        
        * config/sparc/sparc.h (IRA_COVER_CLASSES): New macro.

        * config/i386/i386.h (IRA_COVER_CLASSES): Ditto.

        * config/ia64/ia64.h (IRA_COVER_CLASSES): Ditto.

        * config/rs6000/rs6000.h (IRA_COVER_CLASSES): Ditto.
        
        Richard Henderson  <rth@redhat.com>

        * tree-pass.h (pass_lower_subreg): New external definition.
        * toplev.h (flag_lower_subreg): New external definition.
        * rtl.def (CONCATN): New rtl expression.
        * dwarf2out.c (concatn_loc_descriptor): New function.
        (loc_descriptor): Process CONCATN.
        * timevar.def (TV_LOWER_SUBREG): New definition.
        * emit-rtl.c (gen_reg_rtx_offset): New function.
        (gen_lowpart_common): Process CONCATN.
        * simplify-rtx.c (simplify_subreg): Process CONCATN.
        * common.opt (flower-subreg): New options.
        * rtl.h (gen_reg_rtx_offset): New external definition.
        * Makefile.in (OBJS-common): Add lower-subreg.o.
        (lower-subreg.o): New entry.
        * passes.c (pass_lower_subreg): Add new pass.
        * lower-subreg.c: New file.
        
2008-02-11  Kai Tietz  <kai.tietz@onevision.com>

        * config/i386/cygwin.asm: (__alloca): Correct calling
        convention and alignment.
        (__chkstk): Force 8 byte stack alignment.

2008-02-11  Uros Bizjak  <ubizjak@gmail.com>
            Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/33992
        * tree-ssa-loop-im.c (rewrite_bittest): Fixup the type of
        the zero we compare against.

2008-02-10  Danny Smith  <dannysmith@users.sourceforge.net>

        PR libfortran/35063
        * gthr-win32.h (__gthread_mutex_destroy_function): New function
        to CloseHandle after unlocking to prevent accumulation of handle
        count.

2008-02-09  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR middle_end/34150
        * pa.c (legitimize_pic_address): Add REG_EQUAL note on sets with a
        pic_label_operand source.  Similarly, add a REG_LABEL_OPERAND note
        and update LABEL_NUSES during and after reload.

2008-02-08  Steven Bosscher  <stevenb.gcc@gmail.com>

        PR middle-end/34627
        * combine.c (simplify_if_then_else): Make sure the comparison is
        against const0_rtx when simplifying to (abs x) or (neg (abs X)).

2008-02-08  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR bootstrap/35051
        * double-int.h: Don't include gmp.h for GENERATOR_FILEs.
        (mpz_set_double_int, mpz_get_double_int): Hide from GENERATOR_FILEs.
        * real.h: Don't include gmp.h or mpfr.h for GENERATOR_FILEs.
        (real_from_mpfr, mpfr_from_real): Hide from GENERATOR_FILEs.
        * tree.h (get_type_static_bounds): Likewise.

2008-02-08  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        * doc/invoke.texi (Option Summary, C++ Dialect Options)
        (Objective-C and Objective-C++ Dialect Options, Warning Options):
        Make -Wfoo language annotations match what the compiler outputs.

2008-02-08  Sa Liu  <saliu@de.ibm.com>

        * config/spu/spu-builtins.def: Fixed wrong parameter type in spu 
        intrinsics spu_convts, spu_convtu, spu_convtf.
        * testsuite/gcc.target/spu/intrinsics-3.c: New. Test error messages.

2008-02-08  Hans-Peter Nilsson  <hp@axis.com>

        * doc/extend.texi (Function Attributes) <noinline>: Mention
        asm ("") as method to keep calls.

2008-02-07  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR other/32754
        * doc/options.texi (Options): Replace references to opts.sh with
        optc-gen.awk.
        * opts-common.c: Likewise.
        * optc-gen.awk: Likewise.
        
2008-02-07  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config/s390/s390.h (FUNCTION_ARG_REGNO_P): Fix fprs for 64 bit.

2008-02-07  Richard Henderson  <rth@redhat.com>

        PR rtl-opt/33410
        * config/alpha/alpha.c (alpha_emit_xfloating_compare): Use an
        EXPR_LIST for the REG_EQUAL instead of a comparison with a 
        funny mode.

2008-02-07  Uros Bizjak  <ubizjak@gmail.com>

        PR tree-optimization/35085
        * tree-ssa-reassoc.c (rewrite_expr_tree): Enable destructive update
        for operand entry oe2 in addition to operand entry oe3 in order to
        expose more opportunities for vectorizer sum reduction.

2008-02-06  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        PR other/35107
        * Makefile.in (LIBS): Remove $(GMPLIBS).
        (cc1-dummy, cc1): Add $(GMPLIBS).

2008-02-06  Jan Hubicka  <jh@suse.cz>

        PR target/23322
        * i386.md (moddf_integer): Do not produce partial memory stalls for
        targets where it hurts.

2008-02-06  Uros Bizjak  <ubizjak@gmail.com>

        PR target/35083
        * optabs.c (expand_float): Do not check for decimal modes when
        expanding unsigned integer through signed conversion.

2008-02-06  Nick Clifton  <nickc@redhat.com>

        * config/stormy16/stormy16.md (eqbranchsi): Replace a match_dup
        inside the clobber with a match_operand and duplicated operand
        number in the constraint.
        (ineqbranchsi): Delete redundant comment.

2008-02-06  Ralf Corsepius  <ralf.corsepius@rtems.org>

        * config/arm/rtems-elf.h (TARGET_OS_CPP_BUILTINS): Add 
        builtin_define ("__USE_INIT_FINI__").
        * config/h8300/t-rtems (MULTILIB_OPTION,MULTILIB_DIRNAMES): Add
        -msx multilibs.
        * gthr-rtems.h: Remove __GTHREAD_MUTEX_INIT.

2008-02-06  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        PR documentation/30330
        * doc/invoke.texi (C++ Dialect Options)
        (Objective-C and Objective-C++ Dialect Options, Warning Options):
        For each warning option -Wfoo that allows -Wno-foo, ensure both
        -Wfoo and -Wno-foo are listed in the option index.  Fix index
        entry of -Wswitch-default, index -Wnormalized= including the
        `=', and -Wlarger-than-@var{len} including @var{len}.

2008-02-05  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (floatunssisf2): Use
        ix86_expand_convert_uns_sisf_sse also for TARGET_SSE.
        (floatunssi<mode>2): Rename from floatunssisf2 and floatunssidf2.
        Macroize expander using MODEF mode iterator.

2008-02-05  Diego Novillo  <dnovillo@google.com>

        http://gcc.gnu.org/ml/gcc-patches/2008-02/msg00140.html

        PR 33738
        * tree-vrp.c (vrp_evaluate_conditional): Revert fix for PR 33738.

2008-02-05  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        PR other/35070
        * toplev.c (print_version): Honor `indent' for GMP/MPFR warnings.

2008-02-05  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/35084
        * config/i386/i386.c (ix86_function_sseregparm): Add an arg
        to indicate if a message should be generated.
        (init_cumulative_args): Updated.
        (function_value_32): Likewise.

2008-02-05  Joseph Myers  <joseph@codesourcery.com>

        * doc/include/texinfo.tex: Update to version 2008-02-04.16.

2008-02-05  Uros Bizjak  <ubizjak@gmail.com>

        PR target/35083
        * config/i386/i386.md (floatunsisf2): Enable for TARGET_SSE_MATH only.
        Call ix86_expand_convert_uns_sisf_sse for TARGET_SSE2.

2008-02-04  Diego Novillo  <dnovillo@google.com>

        http://gcc.gnu.org/ml/gcc-patches/2008-02/msg00110.html

        PR 33738
        * tree-vrp.c (vrp_evaluate_conditional): With
        -Wtype-limits, emit a warning when comparing against a
        constant outside the natural range of OP0's type.

2008-02-04  Richard Guenther  <rguenther@suse.de>

        PR middle-end/33631
        * expr.c (count_type_elements): Give for unions instead of
        guessing.

2008-02-04  Richard Guenther  <rguenther@suse.de>

        PR middle-end/35043
        * gimplify.c (gimplify_init_ctor_eval): Convert array indices
        to TYPE_DOMAINs base type instead of using bitsizetype here.

2008-02-03  Jason Merrill  <jason@redhat.com>

        * print-tree.c (print_node) [CONSTRUCTOR]: Print elements.

2008-02-04  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        PR other/29972
        * doc/invoke.texi (C++ Dialect Options, Optimize Options)
        (HPPA Options, i386 and x86-64 Options, IA-64 Options)
        (RS/6000 and PowerPC Options): Fix typos and markup.
        * doc/passes.texi (Tree-SSA passes): Likewise.

2008-02-02  Michael Matz  <matz@suse.de>

        PR target/35045
        * postreload-gcse.c (record_last_reg_set_info_regno): Renamed
        from record_last_reg_set_info.
        (record_last_reg_set_info): Take an RTX argument, iterate over all
        constituent hardregs.
        (record_last_set_info, record_opr_changes): Change calls to
        new signature or to record_last_reg_set_info_regno.

2008-02-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/extend.texi (X86 Built-in Functions): Fix grammar.

2008-02-01  Hans-Peter Nilsson  <hp@axis.com>

        PR rtl-optimization/34773
        * reg-notes.def (EQUAL): Mention significance of combination of
        REG_EQUAL and REG_RETVAL.
        * fwprop.c (try_fwprop_subst): Don't add REG_EQUAL to an
        insn that has a REG_RETVAL.

2008-02-01  Roger Sayle  <roger@eyesopen.com>

        PR bootstrap/33781
        * configure.ac (--enable-fixed-point): Disable unless explicitly
        requested on IRIX.
        * configure: Regenerate.

2008-02-01  Richard Guenther  <rguenther@suse.de>

        PR other/35042
        * invoke.texi (-finline-limit): Remove no longer true parts
        of the documentation.  Note that there is no default value.

2008-02-01  Andrew Pinski  <pinskia@gmail.com>
            Mark Mitchell  <mark@codesourcery.com>
            Ben Elliston  <bje@au.ibm.com>

        PR c/29326
        * doc/extend.texi (Other Builtins): Document.

2008-01-31  Tom Browder <tom.browder@gmail.com>

        * doc/c-tree.texi (Types): Fix grammar.
        (Expression trees): Ditto.
        * doc/passes.texi (Tree-SSA passes): Ditto.
        
        * doc/configterms.texi (Configure Terms): Fix typo.
        * doc/cpp.texi (Common Predefined Macros): Ditto.
        * doc/md.texi (Machine Constraints): Ditto.
        
        * doc/makefile.texi (Makefile): Add comma.

2008-01-31  Tom Browder  <tom.browder@gmail.com>
            Gerald Pfeifer  <gerald@pfeifer.com>
        
        * doc/sourcebuild.texi (Front End): Remove references to CVS
        and CVSROOT/modules.
        (Texinfo Manuals): Replace reference to CVS by one to SVN.
        (Back End): Remove reference to CVS.

2008-01-31  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR target/34900
        * config/mips/mips.c (gen_load_const_gp): New function, taking a
        comment from...
        (mips16_gp_pseudo_reg): ...here.
        * config/mips/mips.md (load_const_gp): Replace with...
        (load_const_gp_<mode>): ...this :P-based insn.

2008-01-31  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        * doc/invoke.texi (-ansi): Mention explicitly corresponding -std=
        options. Minor fixes.
        (-std): Move reference to standards closer to where language
        standards are first mentioned.
        
2008-01-31  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR rtl-optimization/34995
        * reload.c (alternative_allows_const_pool_ref): Take an rtx
        parameter and return a bool.  If the rtx parameter is nonnull,
        check that it satisfies an EXTRA_MEMORY_CONSTRAINT.
        (find_reloads): Update call accordingly.  Pass the new operand
        if it needed no address reloads, otherwise pass null.

2008-01-30  Richard Henderson  <rth@redhat.com>

        PR c/34993
        * tree.c (build_type_attribute_qual_variant): Skip TYPE_DOMAIN
        for unbounded arrays.

2008-01-30  Silvius Rus  <rus@google.com>

        * config/i386/xmmintrin.h (_mm_prefetch): Add const to first arg.

2008-01-30  Jan Hubicka  <jh@suse.cz>

        PR target/34982
        * i386.c (init_cumulative_args): Use real function declaration when
        calling locally.

2008-01-30  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR rtl-optimization/34998
        * global.c (build_insn_chain): Treat non-subreg_lowpart
        SUBREGs of pseudos as clobbering all the words covered by the
        SUBREG, not just all the bytes.
        * ra-conflict.c (clear_reg_in_live): Likewise.  Take the
        original df_ref rather than an extract parameter.
        (global_conflicts): Update call accordingly.

2008-01-30  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config/s390/fixdfdi.h (__fixunstfdi, __fixtfdi): Rearrange
        the overflow check to make it easier to read.
        (__fixtfdi): Change the type of the ll member in union
        long_double to UDItype_x.

2008-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/34969
        * cgraph.h (cgraph_update_edges_for_call_stmt): New prototype.
        * cgraph.c (cgraph_update_edges_for_call_stmt): New function.
        * tree-inline.c (fold_marked_statements): Call
        cgraph_update_edges_for_call_stmt if folding a call statement.
        * cgraphunit.c (verify_cgraph_node): Set cfun to this_cfun for
        debug_generic_stmt calls, reset it back afterwards.

        PR c/35017
        * c-decl.c (start_decl): Don't pedwarn about TREE_READONLY
        static decls.
        * c-typeck.c (build_external_ref): Don't pedwarn about
        static vars in current function's scope.

2008-01-29  Joseph Myers  <joseph@codesourcery.com>

        * config.gcc (i[34567]86-*-nto-qnx*): Remove deprecation.

2008-01-29  Bernhard Fischer  <aldot@gcc.gnu.org>

        PR c/35002
        * ipa-struct-reorg.c: Fix spelling.
        * params.def: Ditto.

2008-01-29  Richard Guenther  <rguenther@suse.de>

        PR middle-end/35006
        * tree-inline.h (struct copy_body_data): Add remapping_type_depth
        field.
        * tree-inline.c (remap_type): Increment remapping_type_depth
        around remapping types.
        (copy_body_r): Only add referenced variables if they are referenced
        from code, not types.

2008-01-29  Douglas Gregor  <doug.gregor@gmail.com>

        PR c++/34055
        PR c++/34103
        PR c++/34219
        PR c++/34606
        PR c++/34753
        PR c++/34754
        PR c++/34755
        PR c++/34919
        PR c++/34961
        * c-pretty-print.c (pp_c_type_qualifier_list): Don't try to print
        qualifiers for an ERROR_MARK_NODE or a NULL_TREE.

2008-01-28  Andy Hutchinson   <hutchinsonandy@netscape.net>

        PR target/34412
        * config/avr/avr.c (expand_prologue): Use correct QI mode frame 
        pointer for tiny stack.

2008-01-28  Bernhard Fischer  <aldot@gcc.gnu.org>

        * doc/tree-ssa.texi: Add cindex PHI nodes and improve wording.

2008-01-28  Bernhard Fischer  <aldot@gcc.gnu.org>

        * config/vx-common.h: Fix typo in comment.

2008-01-28  Ian Lance Taylor  <iant@google.com>

        PR c++/34862
        PR c++/33407
        * tree-ssa-copyrename.c (copy_rename_partition_coalesce): Don't
        coalesce pointers if they have different DECL_NO_TBAA_P values.
        * tree-ssa-copy.c (may_propagate_copy): Don't propagate copies
        between variables with different DECL_NO_TBAA_P values.

2008-01-28  Nathan Froyd  <froydnj@codesourcery.com>

        PR 31535
        * config/rs6000/rs6000.c (small_data_operand): Vectors and floats
        are not legitimate small data references on SPE targets.

2008-01-28  David Daney  <ddaney@avtrex.com>

        * doc/install.texi (mips-*-*): Recommend binutils 2.18.

2008-01-28  David Daney  <ddaney@avtrex.com>

        * doc/install.texi (--disable-libgcj-bc):  Reword documentation.

2008-01-27  Joseph Myers  <joseph@codesourcery.com>

        * config.gcc (strongarm*-*, ep9312*-*, xscale*-*, parisc*-*,
        m680[012]0-*, *-*-beos*, *-*-kaos*, *-*-linux*aout*,
        *-*-linux*libc1*, *-*-solaris2.[0-6], *-*-solaris2.[0-6].*,
        *-*-sysv*, *-*-windiss*, alpha*-*-unicosmk*, cris-*-aout,
        hppa1.1-*-pro*, hppa1.1-*-osf*, hppa1.1-*-bsd*,
        i[34567]86-sequent-ptx4*, i[34567]86-*-nto-qnx*,
        i[34567]86-*-sco3.2v5*, i[34567]86-*-uwin*, powerpc-*-chorusos*,
        vax-*-bsd*, vax-*-ultrix*): Mark obsolete.

2008-01-27  Bernhard Fischer  <aldot@gcc.gnu.org>

        * basic-block.h (condjump_equiv_p): Fix comment.

2008-01-27  Bernhard Fischer  <aldot@gcc.gnu.org>

        * tree-pretty-print.c (print_generic_decl, print_generic_stmt,
        print_generic_stmt_indented): Fix comment.

2008-01-27  Bernhard Fischer  <aldot@gcc.gnu.org>

        * configure.ac (__stack_chk_fail): Add detecion for availability
        of SSP in uClibc by checking if __UCLIBC_HAS_SSP__ is defined.
        * configure: Regenerate.

2008-01-26  Maxim Kuvyrkov  <maxim@codesourcery.com>

        PR middle-end/34688
        * final.c (output_addr_const): Handle TRUNCATE.

2008-01-26  Zdenek Dvorak  <ook@ucw.cz>

        PR target/34711
        * tree-ssa-loop-ivopts.c (comp_cost): New type.
        (zero_cost, infinite_cost): New constants.
        (struct cost_pair): Change type of cost to comp_cost.
        (struct iv_ca): Change type of cand_use_cost and cost to comp_cost.
        (new_cost, add_costs, sub_costs, compare_costs, infinite_cost_p):
        New functions.
        (set_use_iv_cost, force_expr_to_var_cost, force_var_cost,
        split_address_cost, ptr_difference_cost, difference_cost,
        get_computation_cost_at, get_computation_cost,
        determine_use_iv_cost_generic, determine_use_iv_cost_address,
        determine_use_iv_cost_condition, determine_use_iv_costs,
        cheaper_cost_pair, iv_ca_recount_cost, iv_ca_set_no_cp,
        iv_ca_set_cp, iv_ca_cost, iv_ca_new, iv_ca_dump, iv_ca_extend,
        iv_ca_narrow, iv_ca_prune, try_improve_iv_set, find_optimal_iv_set):
        Change type of cost to comp_cost.
        (determine_iv_cost): Increase cost of non-original ivs, instead
        of decreasing the cost of original ones.
        (get_address_cost): Indicate the complexity of the addressing mode 
        in comp_cost.
        (try_add_cand_for): Prefer using ivs not specific to some object.
        * tree-flow.h (force_expr_to_var_cost): Declaration removed.

2008-01-26  Peter Bergner  <bergner@vnet.ibm.com>
            Janis Johnson  <janis187@us.ibm.com>

        PR target/34814
        * doc/tm.texi (TARGET_EXPAND_TO_RTL_HOOK): Document.
        (TARGET_INSTANTIATE_DECLS): Likewise.
        * target.h (expand_to_rtl_hook): New target hook.
        (instantiate_decls): Likewise.
        * function.c (instantiate_decl): Make non-static.  Rename to...
        (instantiate_decl_rtl): ... this.
        (instantiate_expr): Use instantiate_decl_rtl.
        (instantiate_decls_1): Likewise.
        (instantiate_decls): Likewise.
        (instantiate_virtual_regs: Call new instantiate_decls taget hook.
        * function.h (instantiate_decl_rtl): Add prototype.
        * cfgexpand.c (target.h): New include.
        (tree_expand_cfg): Call new expand_to_rtl_hook target hook.
        * target-def.h (TARGET_EXPAND_TO_RTL_HOOK): New define.
        (TARGET_INSTANTIATE_DECLS): Likewise.
        (TARGET_INITIALIZER): New target hooks added.
        * config/rs6000/rs6000-protos.h (rs6000_secondary_memory_needed_rtx):
        New prototype.
        * config/rs6000/rs6000.c (tree-flow.h): New include.
        (machine_function): Add sdmode_stack_slot field.
        (rs6000_alloc_sdmode_stack_slot): New function.
        (rs6000_instantiate_decls): Likewise.
        (rs6000_secondary_memory_needed_rtx): Likewise.
        (rs6000_check_sdmode): Likewise.
        (TARGET_EXPAND_TO_RTL_HOOK): Target macro defined.
        (TARGET_INSTANTIATE_DECLS): Likewise.
        (rs6000_hard_regno_mode_ok): Allow SDmode.
        (num_insns_constant): Likewise.  Handle _Decimal32 constants.
        (rs6000_emit_move): Handle SDmode.
        (function_arg_advance): Likewise.
        (function_arg): Likewise.
        (rs6000_gimplify_va_arg): Likewise.  Add special handling of
        SDmode var args for 32-bit compiles.
        (rs6000_secondary_reload_class): Handle SDmode.
        (rs6000_output_function_epilogue): Likewise.
        (rs6000_function_value): Simplify if statement.
        (rs6000_libcall_value): Likewise.
        * config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Handle SDmode.
        (SECONDARY_MEMORY_NEEDED_RTX): Add define.
        * config/rs6000/dfp.md (movsd): New define_expand and splitter.
        (movsd_hardfloat): New define_insn.
        (movsd_softfloat): Likewise.
        (movsd_store): Likewise.
        (movsd_load): Likewise.
        (extendsddd2): Likewise.
        (extendsdtd2): Likewise.
        (truncddsd2): Likewise.
        (movdd_hardfloat64): Fixup comment.
        (UNSPEC_MOVSD_LOAD): New constant.
        (UNSPEC_MOVSD_STORE): Likewise.

2008-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/34965
        * c-pretty-print.c (pp_c_exclusive_or_expression): Handle
        TRUTH_XOR_EXPR.
        (pp_c_logical_and_expression): Handle TRUTH_AND_EXPR.
        (pp_c_logical_or_expression): Handle TRUTH_OR_EXPR.
        (pp_c_expression): Handle TRUTH_AND_EXPR, TRUTH_OR_EXPR
        and TRUTH_XOR_EXPR.

2008-01-26  David Edelsohn  <edelsohn@gnu.org>

        PR target/34794
        * config.gcc: Separate AIX 5.3 from AIX 6.1.
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Define
        __LONGDOUBLE128 too.
        * config/rs6000/aix61.h: New file.

2008-01-26  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR rtl-optimization/34959
        * optabs.c (expand_unop): In libcall notes, give ffs, clz, ctz,
        popcount and parity rtxes the same mode as their operand.
        Truncate or extend the result to the return value's mode
        if necessary.

2008-01-26  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR target/34981
        * config/mips/mips-protos.h (mips_expand_call): Return an rtx.
        * config/mips/mips.h (FIRST_PSEUDO_REGISTER): Rename FAKE_CALL_REGNO
        to GOT_VERSION_REGNUM.
        (CALL_REALLY_USED_REGISTERS): Set the GOT_VERSION_REGNUM entry to 0.
        (EPILOGUE_USES): Include GOT_VERSION_REGNUM if TARGET_USE_GOT.
        * config/mips/mips.c (mips_emit_call_insn): New function.
        (mips_call_tls_get_addr): Call mips_expand_call directly.
        (mips16_copy_fpr_return_value): Use mips_emit_call_insn rather than
        emit_call_insn.
        (mips16_build_call_stub): Likewise.  Return the call insn or null.
        (mips_expand_call): Update the call to mips16_build_call_stub
        accordingly and a remove redundant condition.  Assert that MIPS16
        stubs do not use lazy binding.  Use mips_emit_call_insn and return
        the call insn.
        (mips_extra_live_on_entry): Include GOT_VERSION_REGNUM if
        TARGET_USE_GOT.
        (mips_hard_regno_mode_ok_p): Allow SImode for GOT_VERSION_REGNUM.
        (mips_avoid_hazard): Remove hazard_set handling.
        * config/mips/mips.md (UNSPEC_EH_RECEIVER): Rename to...
        (UNSPEC_RESTORE_GP): ...this.
        (UNSPEC_SET_GOT_VERSION, UNSPEC_UPDATE_GOT_VERSION): New constants.
        (FAKE_CALL_REGNO): Rename to...
        (GOT_VERSION_REGNUM): ...this.
        (type): Add "ghost" value.  Add an associated insn reservation.
        (hazard_set): Remove.
        (exception_receiver): Rename to...
        (restore_gp): ...this and update the unspec identifier accordingly.
        (exception_receiver, nonlocal_got_receiver): New expanders.
        (load_call<mode>): Use GOT_VERSION_REGNUM.  Don't set
        FAKE_CALL_REGNO.  Remove hazard_set attribute.
        (set_got_version, update_got_version): New patterns.

2008-01-26  Danny Smith  <dannysmith@users.sourceforge.net>

        PR target/34970
        * config/i386/cygming.h (ASM_OUTPUT_LABELREF): Define.

2008-01-25  Joseph Myers  <joseph@codesourcery.com>

        PR other/31955
        * doc/install.texi2html: Generate gcc-vers.texi.

2008-01-25  DJ Delorie  <dj@redhat.com>

        * config/m32c/m32c.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.

2008-01-25  Joseph Myers  <joseph@codesourcery.com>

        * config/c4x: Remove directory.
        * config.gcc (crx-*, mt-*): Mark obsolete.
        (c4x-*, tic4x-*, c4x-*-rtems*, tic4x-*-rtems*, c4x-*, tic4x-*,
        h8300-*-rtemscoff*, ns32k-*-netbsdelf*, ns32k-*-netbsd*,
        sh-*-rtemscoff*): Remove cases.
        * defaults.h (C4X_FLOAT_FORMAT): Remove.
        * real.c (encode_c4x_single, decode_c4x_single,
        encode_c4x_extended, decode_c4x_extended, c4x_single_format,
        c4x_extended_format): Remove.
        * real.h (c4x_single_format, c4x_extended_format): Remove.
        * doc/extend.texi (interrupt, naked): Remove mention of attributes
        on C4x.
        (Pragmas): Remove comment about c4x pragmas.
        * doc/install.texi (c4x): Remove target-specific instructions.
        * doc/invoke.texi (TMS320C3x/C4x Options): Remove.
        * doc/md.texi (Machine Constraints): Remove C4x documentation.
        * doc/tm.texi (MEMBER_TYPE_FORCES_BLK, c_register_pragma): Do not
        refer to C4x source files as examples.
        (C4X_FLOAT_FORMAT): Remove documentation.

2008-01-25  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/bfin.c (override_options): Reorder tests so that
        flag_pic gets enabled for -msep-data.

2008-01-25  Richard Guenther  <rguenther@suse.de>

        PR middle-end/32244
        * expr.c (expand_expr_real_1): Reduce result of LSHIFT_EXPR
        to its bitfield precision if required.

2008-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/33880
        * tree-nested.c (walk_omp_for): New function.
        (convert_nonlocal_reference, convert_local_reference): Call
        walk_omp_for on OMP_FOR.
        (convert_call_expr): Call walk_body on OMP_FOR's
        OMP_FOR_PRE_INIT_BODY.

2008-01-25  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34966
        * tree-ssa-math-opts.c (execute_cse_sincos_1): For all but
        default defs and PHI_NODEs we have to insert after the
        defining statement.

2008-01-24  Nick Clifton  <nickc@redhat.com>

        * config/stormy16/stormy16-lib2.c (MIN_UNITS_PER_WORD):
        Provide a default definition.
        (LIBGCC2_UNITS_PER_WORD): Likewise.

        * config/stormy16/stormy16.c: Include df.h for the prototype
        for df_regs_ever_live_p.
        (xstormy16_expand_builtin_va_start): Convert the stack offset
        into a component_ref and then use POINTER_PLUS_EXPR to add it
        to the incoming_virtual_args_rtx.
        (xstormy16_gimplify_va_arg_expr): Rename to
        xstormy16_gimplify_va_arg_expr.
        Use POINTER_PLUS_EXPR when performing pointer arithmetic.
        (TARGET_GIMPLIFY_VA_ARG_EXPR): Use renamed
        xstormy16_gimplify_va_arg_expr.
        Fix up some formatting issues.

        * config/stormy16/stormy16.c: (xstormy16_carry_plus_operand):
        Move to predicates.md.
        (xs_hi_general_operand): Likewise.
        (xs_hi_nonmemory_operand): Likewise.
        * config/stormy16/predicates.md:
        (xstormy16_carry_plus_operand): New predicate.
        (xs_hi_general_operand): New predicate.
        (xs_hi_nonmemory_operand): New predicate.
        * config/stormy16/stormy16-protos.h:
        (xstormy16_carry_plus_operand): Delete prototype.
        (xs_hi_general_operand): Likewise.
        (xs_hi_nonmemory_operand): Likewise.

        * config/storm16/stormy16.md (addhi3): Remove earlyclobber
        modifiers as they are no longer needed and they can trigger
        reload spill failures.

        * config/storm16/stormy16.md (ineqbranchsi): Replace match_dup
        with a match_operand in order to help reload.

        * config/storm16/stormy16.md (movhi_internal): Replace 'r'
        constraint with 'e' for the 8th alternative as this version of
        the mov.w instruction only accepts the lower 8 registers.

2008-01-25  Uros Bizjak  <ubizjak@gmail.com>

        PR target/34856
        * simplifx-rtx.c (simplify_const_binary_operation) [VEC_CONCAT]:
        Consider only CONST_INT, CONST_DOUBLE and CONST_FIXED as constant
        vector elements.

2008-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/33333
        * gimplify.c (gimplify_omp_for): Gimplify OMP_FOR_PRE_BODY.

2008-01-25  Golovanevsky Olga  <olga@il.ibm.com>

        * ipa-struct-reorg.c (remove_str_allocs_in_func, remove_str_allocs):
        New functions.
        (remove_structure): Update allocations list before removing structure.
        
2008-01-25  Golovanevsky Olga  <olga@il.ibm.com>

        * ipa-struct-reorg.c (is_safe_cond_expr, 
        create_new_stmts_for_cond_expr): Use integer_zerop function,
        that recognize not only zero-pointer, but zero-integer too.

2008-01-25  Ben Elliston  <bje@au.ibm.com>

        PR other/22232
        * fixproto: Escape "." in sed expression that strips leading "./".

2008-01-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR driver/34904
        * gcc.c (SWITCH_OK): Removed.
        (SWITCH_LIVE): Changed to bit.
        (SWITCH_FALSE): Likewise.
        (SWITCH_IGNORE): Likewise.
        (switchstr): Change live_cond to unsigned int.
        (process_command): Replace SWITCH_OK with 0.
        (do_self_spec): Likewise.
        (set_collect_gcc_options): Check the SWITCH_IGNORE bit.
        (give_switch): Likewise.
        (used_arg): Likewise.
        (do_spec_1): Set the SWITCH_IGNORE bit.
        (check_live_switch): Check both SWITCH_LIVE and SWITCH_FALSE
        bits.  Set the SWITCH_LIVE bit.

2008-01-24  Andreas Krebbel  <krebbel1@de.ibm.com>

        * config/s390/s390.h (MOVE_RATIO): Define new target macro.

2008-01-24  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR tree-optimization/34472
        * ipa-struct-reorg.c (safe_cond_expr_check): Change the DATA
        parameter to a "bool *" and set *DATA to false if there is
        an unsafe access.  Do not delete the structure here.
        (check_cond_exprs): Delete it here instead.
        (check_cond_exprs, exclude_cold_structs): Do not increase
        I when removing a structure.

2008-01-24  Uros Bizjak  <ubizjak@gmail.com>

        PR target/34856
        * config/i386/i386.c (ix86_expand_vector_init): Consider only
        CONST_INT, CONST_DOUBLE and CONST_FIXED as constant vector elements.

2008-01-24  Jakub Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/34934
        * tree-stdarg.c (reachable_at_most_once): Use VEC vector instead of
        a fixed vector for stack.

2008-01-24  Ben Elliston  <bje@au.ibm.com>

        PR c++/25701
        * doc/gcc.texi (Software development): Add a direntry for g++.
        
2008-01-23  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.h (CC1PLUS_SPEC, OPTIMIZATION_OPTIONS): Drop
        stale and straggling -fforce-addr comments above.

        * config/cris/cris.h (CRIS_SUBTARGET_VERSION, TARGET_VERSION): Don't
        define.
        * config/cris/linux.h (CRIS_SUBTARGET_VERSION): Don't define.
        * config/cris/aout.h (CRIS_SUBTARGET_VERSION): Don't define.

2008-01-23  Michael Matz  <matz@suse.de>

        PR debug/34895
        * dwarf2out.c (force_type_die): Use modified_type_die instead of
        gen_type_die.

2008-01-23  Andreas Krebbel  <krebbel1@de.ibm.com>

        * ipa-struct-reorg.c (create_new_malloc): Use pointer type as
        malloc result type.

2008-01-23 Anatoly Sokolov <aesok@post.ru>

        * config/avr/avr.c (avr_current_arch): New variable.
        (avr_arch_types): Add 'avr31' and 'avr51' entries.
        (avr_arch): Add 'ARCH_AVR31' and 'ARCH_AVR51'.
        (avr_mcu_types): Add 'avr31' and 'avr51' architectures.
        (avr_override_options): Init 'avr_current_arch'. 
        (base_arch_s): Move from here...
        * config/avr/avr.h (base_arch_s): ... here. Add new members 
        'have_elpm', 'have_elpmx', 'have_eijmp_eicall', 'reserved'. Rename 
        'mega' to 'have_jmp_call'.
        (TARGET_CPU_CPP_BUILTINS): Define "__AVR_HAVE_JMP_CALL__", 
        "__AVR_HAVE_RAMPZ__",   "__AVR_HAVE_ELPM__" and  "__AVR_HAVE_ELPMX__"
        macros.
        (LINK_SPEC, CRT_BINUTILS_SPECS, ASM_SPEC): Add 'avr31' and 'avr51' 
        architectures.
        * config/avr/t-avr (MULTILIB_OPTIONS, MULTILIB_DIRNAMES, 
        MULTILIB_MATCHES): (Ditto.).

2008-01-23  Richard Guenther  <rguenther@suse.de>

        PR middle-end/31529
        * cgraphunit.c (cgraph_reset_node): Always mark the node
        not reachable if it is not queued already.

2008-01-23  Bernd Schmidt  <bernd.schmidt@analog.com>

        * config/bfin/bfin-protos.h (WA_RETS, ENABLE_WA_RETS): New macros.
        * config/bfin/bfin.c (bfin_cpus): Add WA_RETS everywhere.
        (cputype_selected): New static variable.
        (bfin_handle_option): Set it if -mcpu is used.
        (override_option): Select default set of workarounds if no cpu type
        selected on the command line.
        (workaround_rts_anomaly): Only run if ENABLE_WA_RETS.

        From  Michael Frysinger  <michael.frysinger@analog.com>
        * config/bfin/bfin-protos.h (enum bfin_cpu_type): Add
        BFIN_CPU_BF547, BFIN_CPU_BF523, BFIN_CPU_BF524, and BFIN_CPU_BF526.

        * config/bfin/elf.h (LIB_SPEC): Use proper linker script
        for bf547, bf523, bf524, and bf526.
        * config/bfin/bfin.c (bfin_cpus[]): Add bf547,  bf523, bf524, and
        bf526.
        * config/bfin/bfin.h (TARGET_CPU_CPP_BUILTINS): Define
        __ADSPBF523__ for bf523, __ADSPBF524__ for bf524,
        __ADSPBF526__ for bf526, __ADSPBF52x__ for all three, as well as
        __ADSPBF547__ and __ADSPBF54x__ for bf547.
        * doc/invoke.texi (Blackfin Options): Document that
        -mcpu now accept bf547, bf523, bf524, and bf526.

2008-01-22  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/34628
        * combine.c (try_combine): Stop and undo after the first combination
        if an autoincrement side-effect on the first insn has effectively
        been lost.

2008-01-22  David Edelsohn  <edelsohn@gnu.org>

        PR target/34529
        * config/rs6000/rs6000.c (rs6000_legitimate_offset_address_p):
        Offset addresses are not valid for Altivec or paired float modes.

2008-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR c++/34607
        * c-parser.c (c_parser_omp_for_loop): Don't call c_finish_omp_for
        if DECL_INITIAL (decl) is error_mark_node.

        PR c++/34914
        * c-common.c (handle_vector_size_attribute): Only allow
        integral, scalar float and fixed point types.  Handle OFFSET_TYPE
        the same way as pointer, array etc. types.
        * tree.c (reconstruct_complex_type): Handle OFFSET_TYPE.

        PR c++/34917
        * tree.c (build_type_attribute_qual_variant): Call
        build_qualified_type if attributes are equal, but quals are not.

2008-01-22  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR 32102
        * doc/invoke.texi (-Wall): -Wall enables -Wstrict-overflow=1.
        * flags.h (warn_strict_aliasing): Remove.
        (warn_strict_overflow): Remove.
        * opts.c (warn_strict_aliasing): Remove.
        (warn_strict_overflow): Remove.
        * c-opts.c (c_common_handle_option): -Wall only sets
        -Wstrict-aliasing or -Wstrict-overflow if they are uninitialized.
        (c_common_post_options): Give default values to -Wstrict-aliasing
        and -Wstrict-overflow if they are uninitialized.
        * common.opt (Wstrict-aliasing): Specify Var and Init.
        (Wstrict-overflow): Likewise.

2008-01-22  Kenneth Zadeck <zadeck@naturalbridge.com>

        PR rtl-optimization/26854
        PR rtl-optimization/34400
        PR rtl-optimization/34884
        * ddg.c (create_ddg_dep_from_intra_loop_link): Use
        DF_RD->gen.
        * df.h (df_changeable_flags.DF_RD_NO_TRIM): Deleted
        (df_rd_bb_info.expanded_lr_out): Deleted
        * loop_invariant.c (find_defs): Deleted DF_RD_NO_TRIM flag.
        * loop_iv.c (iv_analysis_loop_init): Ditto.  * df-problems.c
        (df_rd_free_bb_info, df_rd_alloc, df_rd_confluence_n,
        df_rd_bb_local_compute, df_rd_transfer_function, df_rd_free):
        Removed code to allocate, initialize or free expanded_lr_out.
        (df_rd_bb_local_compute_process_def): Restructured to make more
        understandable.
        (df_rd_confluence_n): Removed code to no apply invalidate_by_call
        sets if the sets are being trimmed.

2008-01-22  H.J. Lu  <hongjiu.lu@intel.com>

        PR bootstrap/32287
        * configure.ac (ld_vers): Support GNU linker version xx.xx.*
        (as_vers): Likewise.
        * configure: Regenerated.

2008-01-22  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR middle-end/33092
        * tree-pass.h (pass_build_alias): New pass.
        * tree-ssa-alias.c (gate_build_alias): New.
        (pass_build_alias): New.
        * passes.c (init_optimization_passes): Add pass_build_alias after
        pass_create_structure_vars.

2008-01-22  Wolfgang Gellerich  <gellerich@de.ibm.com>

        * config/s390/s390.h (S390_TDC_POSITIVE_NORMALIZED_NUMBER):
        Renamed to S390_TDC_POSITIVE_NORMALIZED_BFP_NUMBER.
        (S390_TDC_NEGATIVE_NORMALIZED_NUMBER): Renamed to
        S390_TDC_NEGATIVE_NORMALIZED_BFP_NUMBER.
        (S390_TDC_POSITIVE_DENORMALIZED_NUMBER): Renamed to
        S390_TDC_POSITIVE_DENORMALIZED_BFP_NUMBER.
        (S390_TDC_NEGATIVE_DENORMALIZED_NUMBER): Renamed to
        S390_TDC_NEGATIVE_DENORMALIZED_BFP_NUMBER.
        (S390_TDC_POSITIVE_NORMALIZED_BFP_NUMBER): New constant.
        (S390_TDC_NEGATIVE_NORMALIZED_BFP_NUMBER): New constant.
        (S390_TDC_POSITIVE_DENORMALIZED_BFP_NUMBER): New constant.
        (S390_TDC_NEGATIVE_DENORMALIZED_BFP_NUMBER): New constant.
        * config/s390/s390.md (FP_ALL): New mode iterator.
        (_d): New mode attribute.
        ("*signbit<mode>2>"): Changed mode of first operand.
        ("isinf<mode>2"): Changed mode of first operand.
        ("*TDC_insn"): Adaptation for DFP modes.

2008-01-22  Ben Elliston  <bje@au.ibm.com>

        * tree.c (check_qualified_type): Improve function description.

2008-01-21  Jason Merrill  <jason@redhat.com>

        PR c++/34196
        * tree.h (TRY_CATCH_IS_CLEANUP): New macro.
        * tree-eh.c (honor_protect_cleanup_actions): Strip TRY_CATCH_EXPR
        if it is set.

2008-01-21  DJ Delorie  <dj@redhat.com>

        * doc/tm.texi (HARD_REGNO_NREGS): Note that this macro must not
        return zero.

2008-01-21  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34856
        * tree-cfg.c (verify_expr): Allow all invariant expressions
        instead of just constant class ones as reference argument.
        * tree-ssa-loop-im.c (for_each_index): Handle CONSTRUCTOR
        like any other constant.
        * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Likewise.

2008-01-21  H.J. Lu  <hongjiu.lu@intel.com>

        * regmove.c (fixup_match_1): Update call crossed frequencies.

2008-01-21  Richard Guenther  <rguenther@suse.de>

        PR c/34885
        * tree-inline.c (setup_one_parameter): Deal with mismatched
        types using a VIEW_CONVERT_EXPR.

2008-01-21  Alon Dayan  <alond@il.ibm.com>
            Olga Golovanevsky  <olga@il.ibm.com>
        
        PR tree-optimization/34701
        * ipa-struct-reorg.c (gen_size): Fix the malloc parameter calculation
        when the structure size is not a power of 2.

2008-01-20  Kenneth Zadeck <zadeck@naturalbridge.com>

        * doc/install.texi: Add doc for --enable-checking=df.
        
2008-01-20  Kaz Kojima  <kkojima@gcc.gnu.org>

        PR rtl-optimization/34808
        * emit-rtl.c (try_split): Handle REG_RETVAL notes.

2008-01-20  Richard Sandiford  <rsandifo@nildram.co.uk>

        * global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per
        input.

2008-01-19  Kenneth Zadeck <zadeck@naturalbridge.com>

        PR rtl-optimization/26854
        PR rtl-optimization/34400
        * ddg.c (create_ddg_dep_from_intra_loop_link): Do not use
        DF_RD->gen.
        * df.h (df_changeable_flags.DF_RD_NO_TRIM): New.
        (df_rd_bb_info.expanded_lr_out): New.
        * loop_invariant.c (find_defs): Added DF_RD_NO_TRIM flag.
        * loop_iv.c (iv_analysis_loop_init): Ditto.
        * df-problems.c (df_rd_free_bb_info, df_rd_alloc, df_rd_confluence_n,
        df_rd_bb_local_compute, df_rd_transfer_function, df_rd_free):
        Added code to allocate, initialize or free expanded_lr_out.
        (df_rd_bb_local_compute_process_def): Restructured to make
        more understandable.
        (df_rd_confluence_n): Add code to do nothing with fake edges and
        code to no apply invalidate_by_call sets if the sets are being trimmed.
        (df_lr_local_finalize): Renamed to df_lr_finalize.
        (df_live_local_finalize): Renamed to df_live_finalize.

2008-01-20  Richard Sandiford  <rsandifo@nildram.co.uk>

        PR target/34831
        * config/mips/mips.md (div<mode>3): Use <recip_condition> when
        deciding whether to use reciprocal instructions.

2008-01-19  Uros Bizjak  <ubizjak@gmail.com>

        * dwarf2out.c (dwarf2out_switch_text_section): Do not call
        dwarf2out_note_section_used if cold_text_section is NULL.

2008-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR gcov-profile/34610
        * tree-cfg.c (make_edges): Mark both outgoing edges from
        OMP_CONTINUE and from OMP_FOR as EDGE_ABNORMAL.
        * omp-low.c (expand_omp_for): Clear EDGE_ABNORMAL bits
        from OMP_FOR and OMP_CONTINUE outgoing edges.

        * tree-profile.c (tree_profiling): Return early if
        cfun->after_tree_profile != 0.  Set cfun->after_tree_profile
        at the end.
        * omp-low.c (expand_omp_parallel): Copy after_tree_profile
        from cfun to child_cfun.
        * function.h (struct function): Add after_tree_profile bit.

2008-01-19 Anatoly Sokolov <aesok@post.ru>

        * config/avr/avr.S (_exit): Disable interrupt.

2008-01-18  Kenneth Zadeck  <zadeck@naturalbridge.com>
            Steven Bosscher  <stevenb.gcc@gmail.com>

        PR rtl-optimization/26854
        PR rtl-optimization/34400
        * df-problems.c (df_live_scratch): New scratch bitmap.
        (df_live_alloc): Allocate df_live_scratch when doing df_live.
        (df_live_reset): Clear the proper bitmaps.
        (df_live_bb_local_compute): Only process the artificial defs once
        since the order is not important.
        (df_live_init): Init the df_live sets only with the variables
        found live by df_lr.
        (df_live_transfer_function): Use the df_lr sets to prune the
        df_live sets as they are being computed.  
        (df_live_free): Free df_live_scratch.

2008-01-18  Ian Lance Taylor  <iant@google.com>

        * common.opt: Add fmerge-debug-strings.
        * dwarf2out.c (DEBUG_STR_SECTION_FLAGS): Test
        flag_merge_debug_strings rather than flag_merge_constants.
        * doc/invoke.texi (Option Summary): Mention
        -fmerge-debug-strings.
        (Debugging Options): Document -fmerge-debug-strings.

2008-01-18  Ian Lance Taylor  <iant@google.com>

        PR c++/33407
        * tree.h (DECL_IS_OPERATOR_NEW): Define.
        (struct tree_function_decl): Add new field operator_new_flag.
        * tree-inline.c (expand_call_inline): When inlining a call to
        operator new, force the return value to go into a variable, and
        set DECL_NO_TBAA_P on that variable.
        * c-decl.c (merge_decls): Merge DECL_IS_OPERATOR_NEW flag.

2008-01-18  Uros Bizjak  <ubizjak@gmail.com>

        PR debug/34484
        * dwarf2out.c (dwarf2out_switch_text_section): Do not guard with
        DWARF2_DEBUGGING_INFO.
        (dwarf2out_note_section_used): Ditto.  Add prototype.
        (have_multiple_function_sections, text_section_used,
        cold_text_section_used, *cold_text_sections): Move declarations
        before their uses.

2008-01-17  Bob Wilson  <bob.wilson@acm.org>

        * config/xtensa/unwind-dw2-xtensa.h (_Unwind_FrameState): Remove pc
        field and add signal_ra.
        * config/xtensa/unwind-dw2-xtensa.c (uw_frame_state_for): Remove
        assignments to frame state pc.  Move end of stack check after
        MD_FALLBACK_FRAME_STATE_FOR.
        (uw_update_context_1): Use frame state signal_regs if set, instead
        of checking signal_frame flag.
        (uw_update_context): Use frame state signal_ra if set.
        * config/xtensa/linux.h (MD_UNWIND_SUPPORT): Define.
        * config/xtensa/linux-unwind.h: New file.

2008-01-18  Bernhard Fischer  <aldot@gcc.gnu.org>

        * modulo-sched.c (get_sched_window): Fix comment typo.

2008-01-17  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/34648
        * tree-ssa-sccvn.c (visit_use): Expressions which can throw are varying.

2008-01-17  Anatoly Sokolov <aesok@post.ru>

        * config/avr/avr.h (LINK_SPEC): Support -mrelax and -mpmem-wrap-around.
        * config/avr/avr.opt (mrelax, mpmem-wrap-around): Add.

2008-01-17  Seongbae Park  <seongbae.park@gmail.com>

        PR rtl-optimization/34400
        * df-core.c (df_worklist_dataflow_overeager,
        df_worklist_dataflow_doublequeue): New functions.
        (df_worklist_dataflow): Two different worklist solvers.
        * params.def (PARAM_DF_DOUBLE_QUEUE_THRESHOLD_FACTOR):
        New param.

2008-01-16  Sebastian Pop  <sebastian.pop@amd.com>

        PR testsuite/34821
        * doc/invoke.texi: Document the dependence on pthread for fopenmp
        and ftree-parallelize-loops.

2008-01-17  Mircea Namolaru  <namolaru@il.ibm.com>

        PR rtl-optimization/34826
        * loop-doloop (doloop_modify): Update the REG_BR_PROB note.

2008-01-17  Andreas Krebbel  <krebbel1@de.ibm.com>

        * global.c (find_reg): Mark the eh regs as used if necessary.
        * ra-conflict.c (global_conflicts): Set no_eh_reg flag.
        * ra.h (struct allocno): no_eh_reg field added.  Changed
        no_stack_reg type to bitfield.

2008-01-17  Eric Botcazou  <ebotcazou@adacore.com>

        * tree.c (substitute_in_expr): Add missing 'break'.

2008-01-17  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34825
        * tree-ssa-math-opts.c (is_division_by): Do not recognize
        x / x as division to handle.

2008-01-16  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        * pa64-hpux.h (LIB_SPEC): Add "-lpthread" in shared links if "-mt" or
        "-pthread" is specified.
        * pa-hpux11.h (LIB_SPEC): Likewise.

2008-01-16  Janis Johnson  <janis187@us.ibm.com>
            Peter Bergner  <bergner@vnet.ibm.com>

        PR rtl-optimization/33796
        * sparseset.c (sparseset_alloc): Use xcalloc rather than xmalloc.

2008-01-16  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

        PR libgfortran/34699
        * pa-hpux.h (LINK_SPEC): Only search /lib/pa1.1 and /usr/lib/pa1.1 on
        static links.
        * pa-hpux10.h (LINK_SPEC): Likewise.
        * pa-hpux11.h (LINK_SPEC): Don't search /lib/pa1.1 and /usr/lib/pa1.1.

2008-01-16  Richard Guenther  <rguenther@suse.de>

        PR middle-end/32628
        * fold-const.c (fold_convert_const_int_from_int): Do not
        set overflow if that occured only because of a sign extension
        change when converting from/to a sizetype with the same
        precision and signedness.

2008-01-16  Uros Bizjak  <ubizjak@gmail.com>

        PR debug/34249
        * dwarf2out.c (output_call_frame_info): Move output of FDE initial
        location address to the correct place.  Update copyright year.

2008-01-16  Sebastian Pop  <sebastian.pop@amd.com>

        * lambda-code.c (lambda_transform_legal_p): Handle the case of
        no dependences in the dependence_relations vector.

2008-01-16  Jan Hubicka  <jh@suse.cz>

        PR rtl-optimization/31396
        * regstat.c (regstat_bb_compute_ri): Compute FREQ_CALLS_CROSSED.
        * cfg.c (dump_reg_info): Print it.
        * regs.h (struct reg_info_t): add freq_calls_crossed.
        (REG_FREQ_CALLS_CROSSED): New macro.
        * global.c (global_alloc): Compute freq_calls_crossed for allocno.
        (find_reg): Update call of CALLER_SAVE_PROFITABLE.
        * regmove.c (optimize_reg_copy_1, optimize_reg_copy_2, fixup_match_2,
        regmove_optimize): Update call crossed frequencies.
        * local-alloc.c (struct qty): Add freq_calls_crossed.
        (alloc_qty): Copute freq_calls_crossed.
        (update_equiv_regs, combine_regs): Update REG_FREQ_CALLS_CROSSED.
        (find_free_reg): Update call of CALLER_SAVE_PROFITABLE.
        * ra.h (struct allocno): Add freq_calls_crossed.

2008-01-16  Sebastian Pop  <sebastian.pop@amd.com>

        * gcc.c (LINK_COMMAND_SPEC): Add includes and link options for
        libgomp when compiling with ftree-parallelize-loops.
        (GOMP_SELF_SPECS): Add -pthread for ftree-parallelize-loops.

2008-01-16  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34769
        * tree-data-ref.c (initialize_matrix_A): Revert fix for PR34458.
        * tree.c (int_cst_value): Instead make this function more
        permissive in what it accepts as valid input.  Document this
        function always sign-extends the value.

2008-01-16  Jakub Jelinek  <jakub@redhat.com>
            Richard Guenther  <rguenther@suse.de>

        PR c/34668
        * gimplify.c (fold_indirect_ref_rhs): Rename to ...
        (gimple_fold_indirect_ref_rhs): ... this.
        (gimple_fold_indirect_ref): New function with foldings
        that preserve lvalueness.
        (gimplify_modify_expr_rhs): Call gimple_fold_indirect_ref_rhs.
        * tree-flow.h (gimple_fold_indirect_ref): Declare.
        * tree-inline.c (copy_body_r): Use gimple_fold_indirect_ref
        to fold an INDIRECT_REF, fall back to the old use of
        fold_indirect_ref_1.

2008-01-16  Sebastian Pop  <sebastian.pop@amd.com>

        * tree-data-ref.c (subscript_dependence_tester_1): Call 
        free_conflict_function.
        (compute_self_dependence): Same.

2008-01-16  Uros Bizjak  <ubizjak@gmail.com>

        PR debug/34249
        * debug.h (dwarf2out_switch_text_section): Move declaration from ...
        * dwarf2out.c (dwarf2out_switch_text_section): ... here.  Make
        function global.
        * final.c (final_scan_insn) [NOTE_INSN_SWITCH_TEXT_SECTIONS]:
        Depending on dwarf2out_do_frame, call dwarf2out_switch_text_section
        for DWARF2_UNWIND_INFO targets.

2008-01-16  Richard Guenther  <rguenther@suse.de>

        PR c/34768
        * c-typeck.c (common_pointer_type): Do not merge inconsistent
        type qualifiers for function types.

2008-01-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        * tree-parloops.c (gen_parallel_loop): Fix ommision of declaration for
        loop_iterator li from previous commit.

2008-01-15  Sebastian Pop  <sebastian.pop@amd.com>

        * tree-parloops.c (gen_parallel_loop): Free loop bound estimations.

2008-01-12  Sebastian Pop  <sebastian.pop@amd.com>

        * tree-parloops.c (loop_has_blocks_with_irreducible_flag): New.
        (parallelize_loops): Don't parallelize irreducible components.

2008-01-14  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR c++/24924
        * c-opts (c_common_post_options): Do not enable CPP
        flag_pedantic_errors by default.
        
2008-01-14  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/31944
        * cse.c (remove_pseudo_from_table): New function.
        (merge_equiv_classes): Use above function to remove pseudo-registers.
        (invalidate): Likewise.

2008-01-13  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34601
        * emit-rtl.c (set_reg_attrs_for_decl_rtl): Use DECL_MODE
        instead of TYPE_MODE to deal with calls from expand_one_error_var.

2008-01-13  Uros Bizjak  <ubizjak@gmail.com>

        * gcse.c (cprop_jump): Call validate_unshare_change instead of
        validate_change to unshare the source of the PC set.

2008-01-12  Jan Hubicka  <jh@suse.cz>

        PR middle-end/32135
        * tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Do not construct
        references above array bounds.  This might trigger bounds checks for
        pointers to arrays.

2008-01-12  Sebastian Pop  <sebastian.pop@amd.com>

        * tree-ssa-ter.c (free_temp_expr_table): Free num_in_part and
        new_replaceable_dependencies.

2008-01-12  Doug Kwan  <dougkwan@google.com>

        * c-decl.c: (grokdeclarator): Use OPT_Wignored_qualifiers
        instead of OPT_Wreturn_type in warning due to ignored return type
        qualifiers.
        * c-opt.c (c_common_post_option): Add -Wignored-qualifiers to
        options included in -Wextra.
        * c.opt: New option -Wignored_qualifiers.
        * doc/invoke.texi (Warning Options, -Wextra): Add new option
        -Wignore_qualifiers.
        (-Wignored-qualifiers): Document.
        (-Wreturn-type): Remove description of functionality now handled
        by -Wignored-qualifiers.

2008-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/33788
        * fold-const.c (fold_unary) <VIEW_CONVERT_EXPR>: Fold an existing
        NOP_EXPR if it is between integral types with the same precision.

2008-01-12  Jan Hubicka  <jh@suse.cz>

        PR other/28023
        * invoke.texi (max-inline-recursive-depth): Fix default value.

2008-01-12  Zdenek Dvorak  <ook@ucw.cz>

        * tree-parloops.c (transform_to_exit_first_loop): Cast nit to the
        correct type.

2008-01-11  Bob Wilson  <bob.wilson@acm.org>
        
        * config/xtensa/xtensa.c (override_options): Set flag_shlib.
        
2008-01-11  James E. Wilson  <wilson@specifix.com>

        PR target/26015
        * config/vax/elf.h (FRAME_POINTER_CFA_OFFSET): Define.

2008-01-11  Anatoly Sokolov <aesok@post.ru>

        * config/avr/avr.c (expand_prologue, expand_epilogue): Don't 
        save/restore frame pointer register and don't use 'call-prologues' 
        optimization in function with "OS_task" attribute.

2008-01-11  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/31309
        * expr.c (copy_blkmode_from_reg): Use a mode suited to the size
        when copying to memory.

2008-01-11  Steven Bosscher  <stevenb.gcc@gmail.com>

        PR rtl-optimization/30905
        * cfgcleanup.c: Include dce.h
        (crossjumps_occured): New global variable.
        (try_crossjump_bb): Exit loop after finding a fallthru edge.
        If something changed, set crossjumps_occured to true.
        (try_optimize_cfg): Clear crossjumps_occured at the beginning.
        Don't add/remove fake edges to exit here...
        (cleanup_cfg): ...but do it here, when crossjumping.
        Run a fast DCE when successful crossjumps occured in the latest
        iteration of try_optimize_cfg.

2008-01-11  Richard Guenther  <rguenther@suse.de>

        * tree-ssa-sccvn.c (struct vn_binary_op_s): Move hashcode near opcode.
        (struct vn_unary_op_s): Likewise.
        (vn_reference_insert): Free old reference on hash collision.

2008-01-10  Raksit Ashok  <raksit@google.com>

        PR rtl-optimization/27971
        * combine.c (find_split_point): Split PLUS expressions which are
        inside a MEM rtx, and whose first operand is complex.

2008-01-10  DJ Delorie  <dj@redhat.com>

        * config/m32c/m32c.c (m32c_hard_regno_nregs_1): Renamed from...
        (m32c_hard_regno_nregs): ...this, which is now a wrapper.
        (m32c_hard_regno_ok): Call the underlying function.

2008-01-10  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34683
        * tree-cfg.c (tree_merge_blocks): Do not go through the
        full-blown folding and stmt updating path if we just deal
        with virtual operands.
        * tree-ssa-copy.c (may_propagate_copy): Do not short-cut
        test for abnormal SSA_NAMEs.

2008-01-10  Andreas Krebbel  <krebbel1@de.ibm.com>

        PR middle-end/34641
        * reload.c (push_reload): Add assertions.  All constants from
        reg_equiv_constant should have been used for replacing the respective
        pseudo earlier.
        (find_reloads_address): Invoke find_reloads_address_part for
        constant taken from the reg_equiv_constant array.

2008-01-10  Steven Bosscher  <stevenb.gcc@gmail.com>

        * tree-ssa-sccvn.h (struct vn_ssa_aux): Make the most accessed
        field (valnum) the first in the struct.  Replace bools with
        unit bit fields.

2008-01-10  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34651
        * tree-sra.c (sra_build_assignment): Sanitize.  Use the correct
        types and ordering for masking and converting.

2008-01-09  Sebastian Pop  <sebastian.pop@amd.com>

        PR tree-optimization/34017
        * lambda-code.c (lambda_loopnest_to_gcc_loopnest): Generate code
        also for PHI_NODE expressions.

2008-01-09  Jan Hubicka  <jh@suse.cz>

        PR tree-optimization/34708
        * tree-inline.c (estimate_num_insns_1): Compute cost of SWITCH_EXPR
        based on number of case labels.
        (init_inline_once): Remove switch_cost.
        * tree-inline.h (eni_weights_d): Remove switch_cost.

2008-01-09  Richard Guenther  <rguenther@suse.de>
        Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30132
        * gimplify.c (gimplify_cond_expr): Do not create an addressable
        temporary if an rvalue is ok or an lvalue is not required.

2008-01-09  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34458
        * tree-data-ref.c (initialize_matrix_A): Use tree_low_cst,
        adjust return type.

2008-01-09  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34679
        * tree.c (host_integerp): Check for sizetype only if the
        type is an integer type.

2008-01-09  Steven Bosscher  <stevenb.gcc@gmail.com>

        PR debug/26364
        * opts.c (decode_options): Disable inlining of functions called
        once if not in unit-at-a-time mode.

2008-01-09  Alexandre Oliva  <aoliva@redhat.com>

        * Makefile.in (dse.o): Remove duplicate $(RECOG_H) dependency.

2008-01-08  Richard Guenther  <rguenther@suse.de>

        PR middle-end/31863
        * tree-ssa-structalias.c (push_fields_onto_fieldstack): Bail
        out early if the result will be unused.

2008-01-08  Uros Bizjak  <ubizjak@gmail.com>

        PR target/34709
        Revert:

        2008-01-05  Uros Bizjak  <ubizjak@gmail.com>
        * config/i386/i386.c (ix86_builtin_reciprocal): Remove check
        for TARGET_RECIP.       
        
2008-01-08  Jan Sjodin  <jan.sjodin@amd.com>
        
        * config/i386/i386.c (k8_cost, amdfam10_cost): Branch costs
        for vectorization tuned.
        
2008-01-08  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34683
        * tree-ssa-operands.c (operand_build_cmp): Export.
        * tree-ssa-operands.h (operand_build_cmp): Declare.
        * tree-vn.c (vuses_compare): Remove.
        (sort_vuses): Use operand_build_cmp.
        (sort_vuses_heap): Likewise.
        * tree-ssa-sccvn.c (vuses_to_vec): Use VEC_reserve, not VEC_alloc
        to re-use old VEC if available.  Do not sort already sorted VUSEs.
        (vdefs_to_vec): Do not sort already sorted VDEFs.

2008-01-08  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/34694
        * omp-low.c (copy_var_decl): Copy also DECL_SOURCE_LOCATION.

2008-01-08  Uros Bizjak  <ubizjak@gmail.com>

        PR target/34702
        * doc/invoke.texi (i386 and x86-64 Options) [mrecip]: Document
        limitations of reciprocal sequences on x86 targets.

2008-01-08  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34683
        * tree-flow-inline.h (var_ann): Remove overzealous asserts.

2008-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/34622
        * config/darwin.c (darwin_mergeable_string_section): Don't use
        .cstring if int_size_in_bytes != TREE_STRING_LENGTH.

2008-01-07  Uros Bizjak  <ubizjak@gmail.com>

        PR target/34682
        * config/i386/i386.md (neg<mode>2): Rename from negsf2, negdf2 and
        negxf2.  Macroize expander using X87MODEF mode iterator.  Change
        predicates of op0 and op1 to register_operand.
        (abs<mode>2): Rename from abssf2, absdf2 and negxf2.  Macroize
        expander using X87MODEF mode iterator.  Change predicates of
        op0 and op1 to register_operand.
        ("*absneg<mode>2_mixed", "*absneg<mode>2_sse"): Rename from
        corresponding patterns and macroize using MODEF macro.  Change
        predicates of op0 and op1 to register_operand and remove
        "m" constraint. Disparage "r" alternative with "!".
        ("*absneg<mode>2_i387"): Rename from corresponding patterns and
        macroize using X87MODEF macro.  Change predicates of op0 and op1
        to register_operand and remove "m" constraint.  Disparage "r"
        alternative with "!".
        (absneg splitter with memory operands): Remove.
        ("*neg<mode>2_1", "*abs<mode>2_1"): Rename from corresponding
        patterns and macroize using X87MODEF mode iterator.
        * config/i386/sse.md (negv4sf2, absv4sf2, neg2vdf2, absv2df2):
        Change predicate of op1 to register_operand.
        * config/i386/i386.c (ix86_expand_fp_absneg_operator): Remove support
        for memory operands.

2008-01-07  Nathan Froyd  <froydnj@codesourcery.com>

        * config/rs6000/rs6000.h (ASM_CPU_SPEC): Add clause for mcpu=8548.

2008-01-07  Richard Guenther  <rguenther@suse.de>

        * basic-block.h (struct edge_def): Pair dest_idx with goto_locus
        fields.

2008-01-07  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34683
        * tree-ssa-sccvn.c (vuses_to_vec): Pre-allocate the vector of
        VOPs of the needed size to save memory.  Use VEC_quick_push
        to save compile-time.
        (vdefs_to_vec): Likewise.

2008-01-07  Sa Liu  <saliu@de.ibm.com>

        * config/spu/spu.md (divdf3): Genetate inline code for double
        division.  The implementation doesn't handle INF or NAN, therefore it
        only applies when -ffinite-math-only is given.

2008-01-06  Paolo Carlini  <pcarlini@suse.de>

        PR libstdc++/34680
        * c-cppbuiltin.c (c_cpp_builtins): Define __GXX_RTTI, if appropriate.
        * doc/cpp.texi ([Common Predefined Macros]): Document.

2008-01-06  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (ix86_emit_swsqrtsf): Use negative constants in
        order to use commutative addition instead of subtraction.

2008-01-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>
            Mircea Namolaru  <namolaru@il.ibm.com>
            Vladimir Yanovsky  <yanov@il.ibm.com>
            Revital Eres  <eres@il.ibm.com>

        PR tree-optimization/34263
        * tree-outof-ssa.c (process_single_block_loop_latch,
        contains_tree_r): New functions.
        (analyze_edges_for_bb): Call process_single_block_loop_latch
        function to empty single-basic-block latch block if possible.

2008-01-05  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (ix86_builtin_reciprocal): Remove check
        for TARGET_RECIP.
        (ix86_emit_swsqrtsf): Do not filter out infinity for rsqrt expansion.

2008-01-05  Richard Sandiford  <rsandifo@nildram.co.uk>

        * c-omp.c (check_omp_for_incr_expr): Handle CONVERT_EXPR.

2008-01-05  Richard Sandiford  <rsandifo@nildram.co.uk>

        * config/mips/mips.c (mips_in_small_data_p): Reinstate size > 0 check.

2008-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/34618
        * tree-outof-ssa.c (create_temp): Copy over DECL_GIMPLE_REG_P
        flag from T.

2008-01-05  Uros Bizjak  <ubizjak@gmail.com>

        PR target/34673
        * config/i386/i386.c (ix86_emit_swsqrtsf): Swap input operands
        in the call to gen_rtx_NE.  Remove unneeded VECTOR_MODE_P check.
        Update copyright year.

        * config/i386/i386.md (rsqrtsf2): Enable for TARGET_SSE_MATH.
        Update copyright year.
        * config/i386/sse.md (rsqrtv4sf2): Ditto. Unconditionally expand
        using NR fixup.

2008-01-05  Zhouyi Zhou  <zhouzhouyi@FreeBSD.org>

        * tree-vrp.c (find_conditional_asserts): Remove redundant check that
        edge does not point to current bb before changing need_assert.

2008-01-04  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34029
        * tree-cfg.c (verify_expr): Do not look inside ADDR_EXPRs
        for verifying purposes if they are is_gimple_min_invariant.

2008-01-04  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/34448
        PR tree-optimization/34465
        * gimplify.c (gimplify_init_constructor): Add new parameter
        notify_temp_creation.  Use it.
        (gimplify_modify_expr_rhs): Take volatiles into account when
        optimizing constructors.
        Do not optimize constructors if gimplify_init_constructor will dump to
        memory.
        * gcc.dg/tree-ssa/pr32901.c: Tests const volatiles.
        * gcc.c-torture/compile/pr34448.c: New.

2008-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR gcov-profile/34609
        * tree-inline.c (declare_return_variable): Set TREE_ADDRESSABLE on
        return_slot if result is TREE_ADDRESSABLE.

2008-01-04  Richard Sandiford  <rsandifo@nildram.co.uk>

        * config/mips/mips.md (sqrt_condition): Tweak comment.
        (recip_condition): Likewise.  Require TARGET_FLOAT64 for DFmode.

2008-01-03  Tom Tromey  <tromey@redhat.com>

        PR c/34457
        * c-common.c (c_type_hash): Handle VLAs.

2008-01-03  Jan Hubicka  <jh@suse.cz>

        PR tree-optimization/31081
        * tree-inline.c (remap_ssa_name): Initialize uninitialized SSA vars to
        0 when inlining and not inlining to first basic block.
        (remap_decl): When var is initialized to 0, don't set default_def.
        (expand_call_inline): Set entry_bb.
        * tree-inline.h (copy_body_data): Add entry_bb.

2008-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/34619
        * cgraphunit.c (cgraph_build_static_cdtor): set_cfun back to NULL
        before returning.

        PR tree-optimization/29484
        * tree-inline.c (inline_forbidden_p_2): New function.
        (inline_forbidden_p): Disallow inlining if some static var
        has an address of a local LABEL_DECL in its initializer.
        * doc/extend.texi (Labels as Values): Document &&foo behaviour
        vs. inlining.

2008-01-03  Sebastian Pop  <sebastian.pop@amd.com>

        PR tree-optimization/34635
        * tree-data-ref.c (add_other_self_distances): Make sure that the
        evolution step is constant.

2008-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/34608
        * omp-low.c (expand_omp_parallel): Purge dead EH edges in the child fn.

2008-01-02  Richard Sandiford  <rsandifo@nildram.co.uk>

        * tree-sra.c (scalarize_init): Insert the generate_element_init
        statements after the generate_element_zero statements.

2008-01-02  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34093
        PR middle-end/31976
        * tree-ssa-operands.c (ssa_operand_alloc): Also allocate a buffer
        for very large number of operands instead of ICEing.

2008-01-02  Arthur Norman <acn1@cam.ac.uk>

        PR target/34013
        * gcc/config/i386/i386.c (ix86_expand_prologue): Save red-zone
        while stack probing.

2008-01-01  Douglas Gregor  <doug.gregor@gmail.com>

        * c-opts.c (sanitize_cpp_opts): Don't warn about "long long" when
        in C++0x mode.

2008-01-01  Volker Reichelt  <v.reichelt@netcologne.de>

        PR libmudflap/26442
        * tree-mudflap.c (mx_register_decls): Guard warning by
        !DECL_ARTIFICIAL check.

2008-01-01  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/sse.md (sse5_pperm, sse5_pperm_pack_v2di_v4si,
        sse5_pperm_pack_v4si_v8hi, sse5_pperm_pack_v8hi_v16qi,
        sse5_perm<mode>): Fix constraints.