mirror of git://gcc.gnu.org/git/gcc.git
ce18efcb54
2009-09-02 Vladimir Makarov <vmakarov@redhat.com>
* doc/invoke.texi (-fsched-pressure): Document it.
(-fsched-reg-pressure-heuristic): Remove it.
* reload.c (ira.h): Include.
(find_reloads): Add choosing reload on number of small spilled
classes.
* haifa-sched.c (ira.h): Include.
(sched_pressure_p, sched_regno_cover_class, curr_reg_pressure,
saved_reg_pressure, curr_reg_live, saved_reg_live,
region_ref_regs): New variables.
(sched_init_region_reg_pressure_info, mark_regno_birth_or_death,
initiate_reg_pressure_info, setup_ref_regs,
initiate_bb_reg_pressure_info, save_reg_pressure,
restore_reg_pressure, dying_use_p, print_curr_reg_pressure): New
functions.
(setup_insn_reg_pressure_info): New function.
(rank_for_schedule): Add pressure checking and insn issue time.
Remove comparison of insn reg weights.
(ready_sort): Set insn reg pressure info.
(update_register_pressure, setup_insn_max_reg_pressure,
update_reg_and_insn_max_reg_pressure,
sched_setup_bb_reg_pressure_info): New functions.
(schedule_insn): Add code for printing and updating reg pressure
info.
(find_set_reg_weight, find_insn_reg_weight): Remove.
(ok_for_early_queue_removal): Do nothing if pressure_only_p.
(debug_ready_list): Print reg pressure info.
(schedule_block): Ditto. Check insn issue time.
(sched_init): Set up sched_pressure_p. Allocate and set up some
reg pressure related info.
(sched_finish): Free some reg pressure related info.
(fix_tick_ready): Make insn always ready if pressure_p.
(init_h_i_d): Don't call find_insn_reg_weight.
(haifa_finish_h_i_d): Free insn reg pressure info.
* ira-int.h (ira_hard_regno_cover_class, ira_reg_class_nregs,
ira_memory_move_cost, ira_class_hard_regs,
ira_class_hard_regs_num, ira_no_alloc_regs,
ira_available_class_regs, ira_reg_class_cover_size,
ira_reg_class_cover, ira_class_translate): Move to ira.h.
* ira-lives.c (single_reg_class): Check mode to find how many
registers are necessary for operand.
(ira_implicitly_set_insn_hard_regs): New.
* common.opt (fsched-pressure): New options.
(fsched-reg-pressure-heuristic): Remove.
* ira.c (setup_eliminable_regset): Rename to
ira_setup_eliminable_regset. Make it external.
(expand_reg_info): Pass cover class to setup_reg_classes.
(ira): Call resize_reg_info instead of allocate_reg_info.
* sched-deps.c: Include ira.h.
(implicit_reg_pending_clobbers, implicit_reg_pending_uses): New.
(create_insn_reg_use, create_insn_reg_set, setup_insn_reg_uses,
reg_pressure_info, insn_use_p, mark_insn_pseudo_birth,
mark_insn_hard_regno_birth, mark_insn_reg_birth,
mark_pseudo_death, mark_hard_regno_death, mark_reg_death,
mark_insn_reg_store, mark_insn_reg_clobber,
setup_insn_reg_pressure_info): New.
(sched_analyze_1): Update implicit_reg_pending_uses.
(sched_analyze_insn): Find implicit sets, uses, clobbers of regs.
Use them to create dependencies. Set insn reg uses and pressure
info. Process reg_pending_uses in one place.
(free_deps): Free implicit sets.
(remove_from_deps): Remove implicit sets if necessary. Check
implicit sets when clearing reg_last_in_use.
(init_deps_global): Clear implicit_reg_pending_clobbers and
implicit_reg_pending_uses.
* ira.h (ira_hard_regno_cover_class, ira_reg_class_nregs,
ira_memory_move_cost, ira_class_hard_regs,
ira_class_hard_regs_num, ira_no_alloc_regs,
ira_available_class_regs, ira_reg_class_cover_size,
ira_reg_class_cover, ira_class_translate): Move from ira-int.h.
(ira_setup_eliminable_regset, ira_set_pseudo_classes,
ira_implicitly_set_insn_hard_regs): New prototypes.
* ira-costs.c (pseudo_classes_defined_p, allocno_p,
cost_elements_num): New variables.
(allocno_costs, total_costs): Rename to costs and
total_allocno_costs.
(COSTS_OF_ALLOCNO): Rename to COSTS.
(allocno_pref): Rename to pref.
(allocno_pref_buffer): Rename to pref_buffer.
(common_classes): Rename to regno_cover_class.
(COST_INDEX): New.
(record_reg_classes): Set allocno attributes only if allocno_p.
(record_address_regs): Ditto. Use COST_INDEX instead of
ALLOCNO_NUM.
(scan_one_insn): Use COST_INDEX and COSTS instead of ALLOCNO_NUM
and COSTS_OF_ALLOCNO.
(print_costs): Rename to print_allocno_costs.
(print_pseudo_costs): New.
(process_bb_node_for_costs): Split into 2 functions with new
function process_bb_for_costs. Pass BB to process_bb_for_costs.
(find_allocno_class_costs): Rename to find_costs_and_classes. Add
new parameter dump_file. Use cost_elements_num instead of
ira_allocnos_num. Make one iteration if preferred classes were
already calculated for scheduler. Make 2 versions of code
depending on allocno_p.
(setup_allocno_cover_class_and_costs): Check allocno_p. Use
regno_cover_class and COSTS instead of common_classes and
COSTS_OF_ALLOCNO.
(init_costs, finish_costs): New.
(ira_costs): Set up allocno_p and cost_elements_num. Call
init_costs and finish_costs.
(ira_set_pseudo_classes): New.
* rtl.h (allocate_reg_info): Remove.
(resize_reg_info): Change return type.
(reg_cover_class): New.
(setup_reg_classes): Add new parameter.
* sched-int.h (struct deps_reg): New member implicit_sets.
(sched_pressure_p, sched_regno_cover_class): New external
definitions.
(INCREASE_BITS): New macro.
(struct reg_pressure_data, struct reg_use_data): New.
(struct _haifa_insn_data): Remove reg_weight. Add members
reg_pressure, reg_use_list, reg_set_list, and
reg_pressure_excess_cost_change.
(struct deps): New member implicit_sets.
(pressure_p): New variable.
(COVER_CLASS_BITS, INCREASE_BITS): New macros.
(struct reg_pressure_data, struct reg_use_data): New.
(INSN_REG_WEIGHT): Remove.
(INSN_REG_PRESSURE, INSN_MAX_REG_PRESSURE, INSN_REG_USE_LIST,
INSN_REG_SET_LIST, INSN_REG_PRESSURE_EXCESS_COST_CHANGE): New
macros.
(sched_init_region_reg_pressure_info,
sched_setup_bb_reg_pressure_info): New prototypes.
* reginfo.c (struct reg_pref): New member coverclass.
(reg_cover_class): New function.
(reginfo_init, pass_reginfo_init): Move after free_reg_info.
(reg_info_size): New variable.
(allocate_reg_info): Make static. Setup reg_info_size.
(resize_reg_info): Use reg_info_size. Return flag of resizing.
(setup_reg_classes): Add a new parameter. Setup cover class too.
* Makefile.in (reload.o, haifa-sched.o, sched-deps.o): Add ira.h to the
dependencies.
* sched-rgn.c (deps_join): Set up implicit_sets.
(schedule_region): Set up region and basic blocks pressure
relative info.
* passes.c (init_optimization_passes): Move
pass_subregs_of_mode_init before pass_sched.
From-SVN: r151348
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