ira-improv patch has been committed
H.J. Lu
hjl.tools@gmail.com
Wed Mar 30 16:52:00 GMT 2011
On Mon, Mar 28, 2011 at 6:11 PM, Vladimir Makarov <vmakarov@redhat.com> wrote:
> On 03/27/2011 07:25 PM, Vladimir Makarov wrote:
>>
>> I submitted the following patch. The patch contains original
>> patches from ira-improv branch, changes addressing all Keneth Zadeck's
>> comments in http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00457.html,
>> and a minor change fixing few regression on gcc testsuite for x86/x86-64
>> and
>> ppc.
>>
>> The patch was successfully tested and bootstrapped on x86/x86-64,
>> ppc64, and ia64.
>>
> Here is another try to commit the patch. The previous bootstrap failure was
> because of wrong assertion which fails in extremely rare case (multi-object
> allocnos which got hard reg set nodes different from the allocno profitable
> hard regs and the corresponding node hard regs sets happened not be
> intersected). The fix is very small and described by the first ChangeLog
> entry.
>
> The patch was bootstrapped on x86/x86-64, ppc64, ia64, and i686 with options
> of H.J.'s automatic tester.
>
> Committed as revision 171649.
>
> 2011-03-28 Vladimir Makarov <vmakarov@redhat.com>
>
> * ira-color.c (update_left_conflict_sizes_p): Don't assume that
> conflict object hard regset nodes have intersecting hard reg sets.
>
> * regmove.c (regmove_optimize): Move ira_set_pseudo_classes call
> after regstat_init_n_sets_and_refs.
>
> * ira.c: Add more comments at the top.
> (setup_stack_reg_pressure_class, setup_pressure_classes):
> Add comments how we compute the register pressure classes.
> (setup_allocno_and_important_classes): Add more comments.
> (setup_class_translate_array, reorder_important_classes)
> (setup_reg_class_relations): Add comments.
>
> * ira-emit.c: Add 2011 to the Copyright line. Add comments at the
> start of the file.
>
> * ira-color.c: Add 2011 to the Copyright line.
> (assign_hard_reg): Add more comments.
> (improve_allocation): Ditto.
>
> * ira-costs.c: Add 2011 to the Copyright line.
> (setup_cost_classes, setup_regno_cost_classes_by_aclass): Add more
> comments.
> (setup_regno_cost_classes_by_mode): Ditto.
>
> Initial patches from ira-improv branch:
>
> 2010-08-13 Vladimir Makarov <vmakarov@redhat.com>
>
> * ira-build.c: (ira_create_object): Remove initialization of
> OBJECT_PROFITABLE_HARD_REGS. Initialize OBJECT_ADD_DATA.
> (ira_create_allocno): Remove initialization of
> ALLOCNO_MEM_OPTIMIZED_DEST, ALLOCNO_MEM_OPTIMIZED_DEST_P,
> ALLOCNO_SOMEWHERE_RENAMED_P, ALLOCNO_CHILD_RENAMED_P,
> ALLOCNO_IN_GRAPH_P, ALLOCNO_MAY_BE_SPILLED_P, ALLOCNO_COLORABLE_P,
> ALLOCNO_NEXT_BUCKET_ALLOCNO, ALLOCNO_PREV_BUCKET_ALLOCNO,
> ALLOCNO_FIRST_COALESCED_ALLOCNO, ALLOCNO_NEXT_COALESCED_ALLOCNO.
> Initialize ALLOCNO_ADD_DATA.
> (copy_info_to_removed_store_destinations): Use ALLOCNO_EMIT_DATA
> and allocno_emit_reg instead of ALLOCNO_MEM_OPTIMIZED_DEST_P and
> ALLOCNO_REG.
> (ira_flattening): Ditto. Use ALLOCNO_EMIT_DATA instead of
> ALLOCNO_MEM_OPTIMIZED_DEST and ALLOCNO_SOMEWHERE_RENAMED_P.
>
> * ira.c (ira_reallocate): Remove.
> (setup_pressure_classes): Call
> ira_init_register_move_cost_if_necessary. Use
> ira_register_move_cost instead of ira_get_register_move_cost.
> (setup_allocno_assignment_flags): Use ALLOCNO_EMIT_DATA.
> (ira): Call ira_initiate_emit_data and ira_finish_emit_data.
>
> * ira-color.c: Use ALLOCNO_COLOR_DATA instead of
> ALLOCNO_IN_GRAPH_P, ALLOCNO_MAY_BE_SPILLED_P, ALLOCNO_COLORABLE_P,
> ALLOCNO_AVAILABLE_REGS_NUM, ALLOCNO_NEXT_BUCKET_ALLOCNO,
> ALLOCNO_PREV_BUCKET_ALLOCNO. ALLOCNO_TEMP. Use OBJECT_COLOR_DATA
> instead of OBJECT_PROFITABLE_HARD_REGS, OBJECT_HARD_REGS_NODE,
> OBJECT_HARD_REGS_SUBNODES_START, OBJECT_HARD_REGS_SUBNODES_NUM.
> Fix formatting.
> (object_hard_regs_t, object_hard_regs_node_t): Move from
> ira-int.h.
> (struct object_hard_regs, struct object_hard_regs_node): Ditto.
> (struct allocno_color_data): New.
> (allocno_color_data_t): New typedef.
> (allocno_color_data): New definition.
> (ALLOCNO_COLOR_DATA): New macro.
> (struct object_color_data): New.
> (object_color_data_t): New typedef.
> (object_color_data): New definition.
> (OBJECT_COLOR_DATA): New macro.
> (update_copy_costs, calculate_allocno_spill_cost): Call
> ira_init_register_move_cost_if_necessary. Use
> ira_register_move_cost instead of ira_get_register_move_cost.
> (move_spill_restore, update_curr_costs): Ditto.
> (allocno_spill_priority): Make it inline.
> (color_pass): Allocate and free allocno_color_dat and
> object_color_data.
> (struct coalesce_data, coalesce_data_t): New.
> (allocno_coalesce_data): New definition.
> (ALLOCNO_COALESCE_DATA): New macro.
> (merge_allocnos, coalesced_allocno_conflict_p): Use
> ALLOCNO_COALESCED_DATA instead of ALLOCNO_FIRST_COALESCED_ALLOCNO,
> ALLOCNO_NEXT_COALESCED_ALLOCNO, ALLOCNO_TEMP.
> (coalesce_allocnos): Ditto.
> (setup_coalesced_allocno_costs_and_nums): Ditto.
> (collect_spilled_coalesced_allocnos): Ditto.
> (slot_coalesced_allocno_live_ranges_intersect_p): Ditto.
> (setup_slot_coalesced_allocno_live_ranges): Ditto.
> (coalesce_spill_slots): Ditto.
> (ira_sort_regnos_for_alter_reg): Ditto. Allocate, initialize and
> free allocno_coalesce_data.
>
> * ira-conflicts.c: Fix formatting.
> (process_regs_for_copy): Call
> ira_init_register_move_cost_if_necessary. Use
> ira_register_move_cost instead of ira_get_register_move_cost.
> (build_object_conflicts): Optimize.
>
> * ira-costs.c (record_reg_classes): Optimize. Call
> ira_init_register_move_cost_if_necessary. Use
> ira_register_move_cost, ira_may_move_in_cost, and
> ira_may_move_out_cost instead of ira_get_register_move_cost and
> ira_get_may_move_cost.
> (record_address_regs): Ditto.
> (scan_one_insn): Optimize.
> (find_costs_and_classes): Optimize.
> (process_bb_node_for_hard_reg_moves): Call
> ira_init_register_move_cost_if_necessary. Use
> ira_register_move_cost instead of ira_get_register_move_cost.
>
> * ira-emit.c: Use allocno_emit_reg, ALLOCNO_EMIT_DATA instead of
> ALLOCNO_REG, ALLOCNO_CHILD_RENAMED_P, ALLOCNO_MEM_OPTIMIZED_DEST,
> ALLOCNO_MEM_OPTIMIZED_DEST_P, and ALLOCNO_SOMEWHERE_RENAMED_P.
> (ira_allocno_emit_data, void_p, new_allocno_emit_data_vec): New
> definitions.
> (ira_initiate_emit_data, ira_finish_emit_data)
> (create_new_allocno): New functions.
> (modify_move_list): Call create_new_alloc instead of
> ira_create_allocno.
> (emit_move_list): Call ira_init_register_move_cost_if_necessary.
> Use ira_register_move_cost instead of ira_get_register_move_cost.
>
> * ira-int.h: Fix some comments.
> (object_hard_regs_t, object_hard_regs_node_t): Move
> to ira-color.c.
> (struct object_hard_regs, struct object_hard_regs_node):
> Ditto.
> (struct ira_object): Remove profitable_hard_regs, hard_regs_node,
> hard_regs_subnodes_start, hard_regs_subnodes_num. Add new member
> add_data.
> (struct ira_allocno): Make mode and aclass a bitfield. Move other
> bitfield after mode. Make hard_regno a short int. Make
> hard_regno short. Remove first_coalesced_allocno and
> next_coalesced_allocno. Move mem_optimized_dest_p,
> somewhere_renamed_p, child_renamed_p, reg, and mem_optimized_dest
> into struct ira_emit_data. Remove in_graph_p, may_be_spilled_p,
> available_regs_num, next_bucket_allocno, prev_bucket_allocno,
> temp, colorable_p. Add new member add_data.
> (ALLOCNO_IN_GRAPH_P, ALLOCNO_MAY_BE_SPILLED_P): Remove.
> (ALLOCNO_COLORABLE_P, ALLOCNO_AVAILABLE_REGS_NUM): Remove.
> (ALLOCNO_NEXT_BUCKET_ALLOCNO, ALLOCNO_PREV_BUCKET_ALLOCNO): Remove.
> (ALLOCNO_TEMP, ALLOCNO_FIRST_COALESCED_ALLOCNO): Remove.
> (ALLOCNO_NEXT_COALESCED_ALLOCNO): Remove.
> (ALLOCNO_ADD_DATA): New macro.
> (ira_emit_data_t): New typedef.
> (struct ira_emit_data): New. Move mem_optimized_dest_p,
> somewhere_renamed_p, child_renamed_p, reg, mem_optimized_dest
> from struct ira_allocno.
> (ALLOCNO_EMIT_DATA): New macro.
> (ira_allocno_emit_data, allocno_emit_reg): New.
> (ALLOCNO_PROFITABLE_HARD_REGS, OBJECT_HARD_REGS_NODE): Remove.
> (OBJECT_HARD_REGS_SUBNODES_STAR, OBJECT_HARD_REGS_SUBNODES_NUM):
> Remove.
> (OBJECT_ADD_DATA): New macro.
> (ira_reallocate): Remove.
> (ira_initiate_emit_data, ira_finish_emit_data): New.
> (ira_get_register_move_cost, ira_get_may_move_cost): Remove.
> (ira_init_register_move_cost_if_necessary): New.
> (ira_object_conflict_iter_next): Merge into
> ira_object_conflict_iter_cond.
> (FOR_EACH_OBJECT_CONFLICT): Don't use
> ira_object_conflict_iter_next.
>
> * ira-live.c: (process_single_reg_class_operands): Call
> ira_init_register_move_cost_if_necessary. Use
> ira_register_move_cost instead of ira_get_register_move_cost.
>
> 2010-08-13 Vladimir Makarov <vmakarov@redhat.com>
>
> * ira-int.h (struct target_ira_int): Remove x_cost_classes.
>
> * ira-costs.c: Fix formatting.
> (cost_classes, cost_classes_num): Remove.
> (struct cost_classes, cost_classes_t, const_cost_classes_t): New.
> (regno_cost_classes, cost_classes_hash, cost_classes_eq): New.
> (cost_classes_del, cost_classes_htab): New.
> (cost_classes_aclass_cache, cost_classes_mode_cache): New.
> (initiate_regno_cost_classes, setup_cost_classes): New.
> (setup_regno_cost_classes_by_aclass): New.
> (setup_regno_cost_classes_by_mode, finish_regno_cost_classes):
> New.
> (record_reg_classes): Use regno_cost_classes instead of
> cost_classes. Move checking opposite operand up.
> (record_address_regs): Use regno_cost_classes
> instead of cost_classes.
> (scan_one_insn): Ditto. Use always general register.
> (print_allocno_costs): Use regno_cost_classes instead of
> cost_classes.
> (print_pseudo_costs): Ditto. Use Reg_N_REFS.
> (find_costs_and_classes): Set up cost classes for each registers.
> Use also their mode for this. Use regno_cost_classes instead of
> cost_classes.
> (setup_allocno_class_and_costs): Use regno_cost_classes instead of
> cost_classes.
> (free_ira_costs, ira_init_costs): Don't use cost_classes.
> (ira_costs, ira_set_pseudo_classes): Call
> initiate_regno_cost_classes and finish_regno_cost_classes.
>
> 2010-10-04 Vladimir Makarov <vmakarov@redhat.com>
>
> * target-def.h (TARGET_IRA_COVER_CLASSES): Remove.
>
> * target.def (ira_cover_classes): Remove.
>
> * doc/tm.texi: Remove TARGET_IRA_COVER_CLASSES and
> IRA_COVER_CLASSES.
>
> * doc/tm.texi.in: Ditto.
>
> * ira-conflicts.c: Remove mentioning cover classes from the file.
> Use ALLOCNO_CLASS instead of ALLOCNO_COVER_CLASS. Use
> ALLOCNO_COVER_CLASS_COST instead of ALLOCNO_CLASS_COST. Fix
> formatting.
>
> * targhooks.c (default_ira_cover_classes): Remove.
>
> * targhooks.h (default_ira_cover_classes): Ditto.
>
> * haifa-sched.c: Remove mentioning cover classes from the file.
> Use ira_reg_pressure_cover instead of ira_reg_class_cover. Use
> ira_pressure_classes and ira_pressure_classes_num instead of
> ira_reg_class_cover_size and ira_reg_class_cover. Use
> sched_regno_pressure_class instead of sched_regno_cover_class.
> (mark_regno_birth_or_death, setup_insn_reg_pressure_info): Use
> ira_reg_class_max_nregs instead of ira_reg_class_nregs.
>
> * ira-int.h: Add 2010 to Copyright. Remove mentioning cover
> classes from the file.
> (object_hard_regs_t, object_hard_regs_node_t): New typedefs.
> (struct object_hard_regs, struct object_hard_regs_node): New.
> (struct ira_object): New members profitable_hard_regs,
> hard_regs_node, hard_regs_subnodes_start, hard_regs_subnodes_num.
> (struct ira_allocno): Rename cover_class to aclass. Rename
> cover_class_cost and updated_cover_class_cost to class_cost and
> updated_class_cost. Remove splay_removed_p and
> left_conflict_size. Add new members colorable_p.
> (ALLOCNO_SPLAY_REMOVED_P, ALLOCNO_LEFT_CONFLICTS_SIZE): Remove.
> (ALLOCNO_COLORABLE_P): New macro.
> (ALLOCNO_COVER_CLASS): Rename to ALLOCNO_CLASS.
> (ALLOCNO_COVER_CLASS_COST, ALLOCNO_UPDATED_COVER_CLASS_COST):
> Rename to ALLOCNO_CLASS_COST and ALLOCNO_UPDATED__CLASS_COST.
> (OBJECT_...): Rename parameter C to O.
> (OBJECT_PROFITABLE_HARD_REGS): New macro.
> (OBJECT_HARD_REGS_NODE, OBJECT_HARD_REGS_SUBNODES_START)
> (OBJECT_HARD_REGS_SUBNODES_NUM): New macros.
> (struct target_ira_int): New members x_ira_max_memory_move_cost,
> x_ira_max_register_move_cost, x_ira_max_may_move_in_cost,
> x_ira_max_may_move_out_cost, x_ira_reg_allocno_class_p,
> x_ira_reg_pressure_class_p, x_ira_important_class_nums,
> x_ira_reg_class_superunion. Rename x_prohibited_class_mode_reg to
> x_ira_prohibited_class_mode_reg. Rename x_ira_reg_class_union to
> x_ira_reg_class_subunion.
> (ira_max_memory_move_cost, ira_max_register_move_cost)
> (ira_max_may_move_in_cost, ira_max_may_move_out_cost)
> (ira_reg_allocno_class_p, ira_reg_pressure_class_p)
> (ira_important_class_nums, ira_reg_class_superunion): New macros.
> (prohibited_class_mode_regs): Rename to
> ira_prohibited_class_mode_regs.
> (ira_reg_class_union): Rename to ira_reg_class_subunion.
> (ira_debug_class_cover): Rename to ira_debug_allocno_classes.
> (ira_set_allocno_cover_class): Rename to ira_set_allocno_class.
> (ira_tune_allocno_costs_and_cover_classes): Rename to
> ira_tune_allocno_costs.
> (ira_debug_hard_regs_forest): New.
> (ira_object_conflict_iter_init, ira_object_conflict_iter_cond)
> (ira_object_conflict_iter_next): Fix comments.
> (ira_hard_reg_set_intersection_p, hard_reg_set_size): New
> functions.
> (ira_allocate_and_set_costs, ira_allocate_and_copy_costs): Rename
> cover_class to aclass.
> (ira_allocate_and_accumulate_costs): Ditto.
> (ira_allocate_and_set_or_copy_costs): Ditto.
>
> * opts.c (decode_options): Remove ira_cover_class check.
>
> * ira-color.c: Remove mentioning cover classes from the file. Use
> ALLOCNO_CLASS, ALLOCNO_CLASS_COST, and ALLOCNO_UPDATED_CLASS_COST
> instead of ALLOCNO_COVER_CLASS, ALLOCNO_COVER_CLASS_COST, and
> ALLOCNO_UPDATED_COVER_CLASS_COST. Fix formatting.
> (splay-tree.h): Remove include.
> (allocno_coalesced_p, processed_coalesced_allocno_bitmap): Move
> before copy_freq_compare_func.
> (allocnos_for_spilling, removed_splay_allocno_vec): Remove.
> (object_hard_regs_vec, object_hard_regs_htab, node_check_tick):
> New definitions.
> (hard_regs_roots, hard_regs_node_vec): Ditto.
> (object_hard_regs_hash, object_hard_regs_eq, find_hard_regs): Ditto.
> (insert_hard_regs, init_object_hard_regs, add_object_hard_regs): Ditto.
> (finish_object_hard_regs, object_hard_regs_compare): Ditto.
> (create_new_object_hard_regs_node): Ditto.
> (add_new_object_hard_regs_node_to_forest): Ditto.
> (add_object_hard_regs_to_forest, collect_object_hard_regs_cover):
> Ditto.
> (setup_object_hard_regs_nodes_parent, first_common_ancestor_node):
> Ditto.
> (print_hard_reg_set, print_hard_regs_subforest): Ditto.
> (print_hard_regs_forest, ira_debug_hard_regs_forest): Ditto.
> (remove_unused_object_hard_regs_nodes): Ditto.
> (enumerate_object_hard_regs_nodes): Ditto.
> (object_hard_regs_nodes_num, object_hard_regs_nodes): Ditto.
> (object_hard_regs_subnode_t): Ditto.
> (struct object_hard_regs_subnode): Ditto.
> (object_hard_regs_subnodes, object_hard_regs_subnode_index): Ditto.
> (setup_object_hard_regs_subnode_index): Ditto.
> (get_object_hard_regs_subnodes_num): Ditto.
> (form_object_hard_regs_nodes_forest): Ditto.
> (finish_object_hard_regs_nodes_tree): Ditto.
> (finish_object_hard_regs_nodes_forest): Ditto.
> (allocnos_have_intersected_live_ranges_p): Rename to
> allocnos_conflict_by_live_ranges_p. Move before
> copy_freq_compare_func.
> (pseudos_have_intersected_live_ranges_p): Rename to
> conflict_by_live_ranges_p. Move before copy_freq_compare_func.
> (setup_left_conflict_sizes_p, update_left_conflict_sizes_p): Ditto.
> (empty_profitable_hard_regs, setup_profitable_hard_regs): Ditto.
> (update_copy_costs): Remove assert. Skip cost update if the hard
> reg does not belong the class.
> (assign_hard_reg): Process only profitable hard regs.
> (uncolorable_allocnos_num): Make it scalar.
> (allocno_spill_priority): Use ALLOCNO_EXCESS_PRESSURE_POINTS_NUM
> and ira_reg_class_max_nregs instead of ALLOCNO_LEFT_CONFLICTS_SIZE
> and ira_reg_class_max_nregs.
> (bucket_allocno_compare_func): Check frequency first.
> (sort_bucket): Add compare function as a parameter.
> (add_allocno_to_ordered_bucket): Assume no coalesced allocnos.
> (uncolorable_allocnos_splay_tree, USE_SPLAY_P): Remove.
> (push_allocno_to_stack): Rewrite for checking new allocno
> colorability.
> (remove_allocno_from_bucket_and_push): Print cost too. Remove
> assert.
> (push_only_colorable): Pass new parameter to sort_bucket.
> (push_allocno_to_spill): Remove.
> (allocno_spill_priority_compare): Make it inline and rewrite.
> (splay_tree_allocate, splay_tree_free): Remove.
> (allocno_spill_sort_compare): New function.
> (push_allocnos_to_stack): Sort allocnos for spilling once. Don't
> build and use splay tree. Choose first allocno in uncolorable
> allocno bucket to spill. Remove setting spill cost.
> (all_conflicting_hard_regs): Remove.
> (setup_allocno_available_regs_num): Check only profitable hard
> regs. Print info about hard regs nodes.
> (setup_allocno_left_conflicts_size): Remove.
> (put_allocno_into_bucket): Don't call
> setup_allocno_left_conflicts_size. Use
> setup_left_conflict_sizes_p.
> (improve_allocation): New.
> (color_allocnos): Call setup_profitable_hard_regs,
> form_object_hard_regs_nodes_forest, improve_allocation,
> finish_object_hard_regs_nodes_forest. Setup spill cost.
> (print_loop_title): Use pressure classes.
> (color_allocnso): Ditto.
> (do_coloring): Remove allocation and freeing splay_tree_node_pool
> and allocnos_for_spilling.
> (ira_sort_regnos_for_alter_reg): Don't setup members
> {first,next}_coalesced_allocno.
> (color): Remove allocating and freeing removed_splay_allocno_vec.
> (fast_allocation): Use ira_prohibited_class_mode_regs instead of
> prohibited_class_mode_regs.
>
> * ira-lives.c: Remove mentioning cover classes from the file. Fix
> formatting.
> (update_allocno_pressure_excess_length): Use pressure classes.
> (inc_register_pressure, dec_register_pressure): Check for pressure
> class.
> (mark_pseudo_regno_live, mark_pseudo_regno_subword_live): Use
> pressure class. Use ira_reg_class_nregs instead of
> ira_reg_class_max_nregs.
> (mark_pseudo_regno_dead, mark_pseudo_regno_subword_dead): Ditto.
> (mark_hard_reg_live, mark_hard_reg_dead): Use pressure class.
> (single_reg_class): Use ira_reg_class_nregs instead of
> ira_reg_class_max_nregs.
> (process_bb_node_lives): Use pressure classes.
>
> * ira-emit.c: Remove mentioning cover classes from the file. Use
> ALLOCNO_CLASS instead of ALLOCNO_COVER_CLASS. Fix formatting.
> (change_loop): Use pressure classes.
> (modify_move_list): Call ira_set_allocno_class instead of
> ira_set_allocno_cover_class.
>
> * ira-build.c: Remove mentioning cover classes from the file. Use
> ALLOCNO_CLASS and ALLOCNO_CLASS_COST instead of
> ALLOCNO_COVER_CLASS and ALLOCNO_COVER_CLASS_COST. Use
> ALLOCNO_UPDATED_CLASS_COST instead of
> ALLOCNO_UPDATED_COVER_CLASS_COST. Fix formatting.
> (ira_create_object): Initiate OBJECT_PROFITABLE_HARD_REGS.
> (ira_create_allocno): Remove initialization of
> ALLOCNO_SPLAY_REMOVED_P, ALLOCNO_LEFT_CONFLICT_SIZE. Initialize
> ALLOCNO_COLORABLE_P.
> (ira_set_allocno_cover_class): Rename to ira_set_allocno_class.
> Update conflict regs for the objects.
> (create_cap_allocno): Remove assert. Don't propagate
> ALLOCNO_AVAILABLE_REGS_NUM.
> (ira_free_allocno_costs): New function.
> (finish_allocno): Change a part of code into call of
> ira_free_allocno_costs.
> (low_pressure_loop_node_p): Use pressure classes.
> (object_range_compare_func): Don't compare classes.
> (setup_min_max_conflict_allocno_ids): Ditto.
>
> * loop-invariant.c: Remove mentioning cover classes from the file.
> Use ira_pressure_classes and ira_pressure_classes_num instead of
> ira_reg_class_cover_size and ira_reg_class_cover. Fix formatting.
> (get_cover_class_and_nregs): Rename to
> get_cover_pressure_and_nregs. Use ira_reg_class_max_nregs instead
> of ira_reg_class_nregs. Use reg_allocno_class instead of
> reg_cover_class.
> (get_inv_cost): Use instead ira_stack_reg_pressure_class of
> STACK_REG_COVER_CLASS.
> (get_regno_cover_class): Rename to get_regno_pressure_class.
> (move_loop_invariants): Initialize and finalize regstat.
>
> * ira.c: Remove mentioning cover classes from the file. Add
> comments about coloring without cover classes. Use ALLOCNO_CLASS
> instead of ALLOCNO_COVER_CLASS. Fix formatting.
> (alloc_reg_class_subclasses, setup_reg_subclasses): Move it before
> setup_class_subset_and_memory_move_costs.
> (setup_stack_reg_pressure_class, setup_pressure_classes): New.
> (setup_cover_and_important_classes): Rename to
> setup_allocno_and_important_classes.
> (setup_class_translate_array): New.
> (setup_class_translate): Call it for allocno and pressure classes.
> (cover_class_order): Rename to allocno_class_order.
> (comp_reg_classes_func): Use ira_allocno_class_translate instead
> of ira_class_translate.
> (reorder_important_classes): Set up ira_important_class_nums.
> (setup_reg_class_relations): Set up ira_reg_class_superunion.
> (print_class_cover): Rename to print_classes. Add parameter.
> (ira_debug_class_cover): Rename to ira_debug_allocno_classes.
> Print pressure classes too.
> (find_reg_class_closure): Rename to find_reg_classes. Don't call
> setup_reg_subclasses.
> (ira_hard_regno_cover_class): Rename to
> ira_hard_regno_allocno_class.
> (ira_reg_class_nregs): Rename to ira_reg_class_max_nregs.
> (setup_prohibited_class_mode_regs): Use
> ira_prohibited_class_mode_regs instead of
> prohibited_class_mode_regs.
> (clarify_prohibited_class_mode_regs): New function.
> (ira_init_register_move_cost): Set up ira_max_register_move_cost,
> ira_max_may_move_in_cost, and ira_max_may_move_out_cost.
> (ira_init_once): Initialize them.
> (free_register_move_costs): Process them.
> (ira_init): Move calls of find_reg_classes and
> setup_hard_regno_aclass after setup_prohibited_class_mode_regs.
> Call clarify_prohibited_class_mode_regs.
> (ira_no_alloc_reg): Remove.
> (too_high_register_pressure_p): Use pressure classes.
>
> * sched-deps.c: Remove mentioning cover classes from the file.
> Use ira_reg_pressure_cover instead of ira_reg_class_cover. Use
> ira_pressure_classes and ira_pressure_classes_num instead of
> ira_reg_class_cover_size and ira_reg_class_cover.
> (mark_insn_hard_regno_birth, mark_hard_regno_death): Use
> sched_regno_pressure_class instead of sched_regno_cover_class.
> (mark_insn_pseudo_birth, mark_pseudo_death): Ditto. Use
> ira_reg_class_max_nregs instead of ira_reg_class_nregs.
>
> * ira.h: Add 2010 to Copyright.
> (ira_no_alloc_reg): Remove external.
> (struct target_ira): Rename x_ira_hard_regno_cover_class,
> x_ira_reg_class_cover_size, x_ira_reg_class_cover, and
> x_ira_class_translate to x_ira_hard_regno_allocno_class,
> x_ira_allocno_classes_num, x_ira_allocno_classes, and
> x_ira_allocno_class_translate. Add x_ira_pressure_classes_num,
> x_ira_pressure_classes, x_ira_pressure_class_translate, and
> x_ira_stack_reg_pressure_class. Rename x_ira_reg_class_nregs to
> x_ira_reg_class_max_nregs. Add x_ira_reg_class_min_nregs and
> x_ira_no_alloc_regs.
> (ira_hard_regno_cover_class): Rename to
> ira_hard_regno_allocno_class.
> (ira_reg_class_cover_size, ira_reg_class_cover): Rename to
> ira_allocno_classes_num and ira_allocno_classes.
> (ira_class_translate): Rename to ira_allocno_class_translate.
> (ira_pressure_classes_num, ira_pressure_classes): New definitions.
> (ira_pressure_class_translate, ira_stack_reg_pressure_class): Ditto.
> (ira_reg_class_nregs): Rename to ira_reg_class_max_nregs.
> (ira_reg_class_min_nregs, ira_stack_reg_pressure_class): New
> (ira_no_alloc_regs): New.
>
> * ira-costs.c: Add 2010 to Copyright. Remove mentioning cover
> classes from the file. Use ALLOCNO_CLASS instead of
> ALLOCNO_COVER_CLASS. Use ALLOCNO_CLASS_COST instead of
> ALLOCNO_COVER_CLASS_COST.
> (regno_cover_class): Rename to regno_aclass.
> (record_reg_classes): Use ira_reg_class_subunion instead of
> ira_reg_class_union.
> (record_address_regs): Check overflow.
> (scan_one_insn): Ditto.
> (print_allocno_costs): Print total mem cost fore regional
> allocation.
> (print_pseudo_costs): Use REG_N_REFS.
> (find_costs_and_classes): Use classes intersected with them on the
> 1st pass. Check overflow. Use ira_reg_class_subunion instead of
> ira_reg_class_union. Use ira_allocno_class_translate and
> regno_aclass instead of ira_class_translate and regno_cover_class.
> Modify code for finding regno_aclass. Setup preferred classes for
> the next pass.
> (setup_allocno_cover_class_and_costs): Rename to
> setup_allocno_class_and_costs. Use regno_aclass instead of
> regno_cover_class. Use ira_set_allocno_class instead of
> ira_set_allocno_cover_class.
> (init_costs, finish_costs): Use regno_aclass instead of
> regno_cover_class.
> (ira_costs): Use setup_allocno_class_and_costs instead of
> setup_allocno_cover_class_and_costs.
> (ira_tune_allocno_costs_and_cover_classes): Rename to
> ira_tune_allocno_costs. Check overflow. Skip conflict hard regs
> by processing objects. Use ira_reg_class_max_nregs instead of
> ira_reg_class_nregs.
>
> * rtl.h (reg_cover_class): Rename to reg_allocno_class.
>
> * sched-int.h: Remove mentioning cover classes from the file.
> (sched_regno_cover_class): Rename to sched_regno_pressure_class.
>
> * reginfo.c: Add 2010 to Copyright. Remove mentioning cover
> classes from the file.
> (struct reg_pref): Rename coverclass into allocnoclass.
> (reg_cover_class): Rename to reg_allocno_class.
>
> * Makefile.in (ira-color.o): Remove SPLAY_TREE_H from
> dependencies.
>
> * config/alpha/alpha.h (IRA_COVER_CLASSES): Remove.
>
> * config/arm/arm.h (IRA_COVER_CLASSES): Ditto.
>
> * config/avr/avr.h (IRA_COVER_CLASSES): Ditto.
>
> * config/bfin/bfin.h (IRA_COVER_CLASSES): Ditto.
>
> * config/cris/cris.h (IRA_COVER_CLASSES): Ditto.
>
> * config/fr30/fr30.h (IRA_COVER_CLASSES): Ditto.
>
> * config/frv/frv.h (IRA_COVER_CLASSES): Ditto.
>
> * config/h8300/h8300.h (IRA_COVER_CLASSES): Ditto.
>
> * config/i386/i386.h (STACK_REG_COVER_CLASS): Ditto.
>
> * config/i386/i386.c (TARGET_IRA_COVER_CLASSES)
> (i386_ira_cover_classes): Ditto.
>
> * config/ia64/ia64.h (IRA_COVER_CLASSES): Ditto.
>
> * config/iq2000/iq2000.h (IRA_COVER_CLASSES): Ditto.
>
> * config/m32r/m32r.h (IRA_COVER_CLASSES): Ditto.
>
> * config/m68k/m68k.h (IRA_COVER_CLASSES): Ditto.
>
> * config/mcore/mcore.h (IRA_COVER_CLASSES): Ditto.
>
> * config/mep/mep.h (IRA_COVER_CLASSES): Ditto.
>
> * config/mips/mips.c (TARGET_IRA_COVER_CLASSES)
> (mips_ira_cover_classes): Ditto.
>
> * config/mn10300/mn10300.h (IRA_COVER_CLASSES): Ditto.
>
> * config/moxie/moxie.h (IRA_COVER_CLASSES): Ditto.
>
> * config/pa/pa64-regs.h (IRA_COVER_CLASSES): Ditto.
>
> * config/pa/pa32-regs.h (IRA_COVER_CLASSES): Ditto.
>
> * config/picochip/picochip.h (IRA_COVER_CLASSES): Ditto.
>
> * config/rs6000/rs6000.h (IRA_COVER_CLASSES_PRE_VSX)
> (IRA_COVER_CLASSES_VSX): Ditto.
>
> * config/rs6000/rs6000.c (TARGET_IRA_COVER_CLASSES)
> (rs6000_ira_cover_classes): Ditto.
>
> * config/rx/rx.h (IRA_COVER_CLASSES): Ditto.
>
> * config/s390/s390.h (IRA_COVER_CLASSES): Ditto.
>
> * config/score/score.h (IRA_COVER_CLASSES): Ditto.
>
> * config/sh/sh.h (IRA_COVER_CLASSES): Ditto.
>
> * config/sparc/sparc.h (IRA_COVER_CLASSES): Ditto.
>
> * config/spu/spu.h (IRA_COVER_CLASSES): Ditto.
>
> * config/stormy16/stormy16.h (IRA_COVER_CLASSES): Ditto.
>
> * config/v850/v850.h (IRA_COVER_CLASSES): Ditto.
>
> * config/vax/vax.h (IRA_COVER_CLASSES): Ditto.
>
> * config/xtensa/xtensa.h (IRA_COVER_CLASSES): Ditto.
>
>
>
It caused:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48367
--
H.J.
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