2012-06-04  Vladimir Makarov  <vmakarov@redhat.com>

	* ira-int.h (struct target_ira_int): Add member
	x_ira_uniform_class_p.
	(ira_uniform_class_p): New macro.

	* ira.c (setup_uniform_class_p): New function.
	(setup_allocno_and_important_classes): Call the function.
	(print_unform_and_important_classes): New function.
	(print_classes): Rename to print_translated_classes.
	(ira_debug_allocno_classes): Add call of
	print_unform_and_important_classes.

	* ira-costs.c (setup_regno_cost_classes_by_aclass): Use uniform
	classes instead of pressure classes.

From-SVN: r188199

gcc/
	* ira-int.h (target_ira_int): Rename x_move_cost to
	x_ira_register_move_cost, x_may_move_in_cost to
	x_ira_may_move_in_cost and x_may_move_out_cost to
	x_ira_may_move_out_cost.  Delete the old fields with
	those names and also x_ira_max_register_move_cost,
	x_ira_max_may_move_in_cost and x_ira_max_may_move_out_cost.
	(move_cost, may_move_in_cost, may_move_out_cost)
	(ira_max_register_move_cost, ira_max_may_move_in_cost)
	(ira_max_may_move_out_cost): Delete.
	* ira.c (init_move_cost): Rename to...
	(ira_init_register_move_cost): ...this, deleting the old
	function with that name.  Apply above variable renamings.
	Retain asserts for null fields.
	(ira_init_once): Don't initialize register move costs here.
	(free_register_move_costs): Apply above variable renamings.
	Remove code for deleted fields.

From-SVN: r188047

ira.c (init_move_cost): Adjust choice of subclasses to match the current ira_init_register_move_cost choice.

gcc/
	* ira.c (init_move_cost): Adjust choice of subclasses to match
	the current ira_init_register_move_cost choice.  Use
	ira_class_subset_p instead of reg_class_subset_p.
	(ira_init_register_move_cost): Assert that move_cost,
	may_move_in_cost and may_move_out_cost already hold the desired
	values for their ira_* equivalents.  For the latter two,
	ignore classes that can't store a register of the given mode.

From-SVN: r188046

ira.c (setup_allocno_and_important_classes): Use ira_class_hard_regs_num to check whether a class has any allocatable registers.

gcc/
	* ira.c (setup_allocno_and_important_classes): Use
	ira_class_hard_regs_num to check whether a class has any
	allocatable registers.
	(ira_init_register_move_cost): Likewise.

From-SVN: r188045

gcc/
	* ira.c (init_move_cost): Adjust local variable names to match
	file conventions.  Use ira_assert instead of gcc_assert.

From-SVN: r188044

gcc/
	* regs.h (move_table, move_cost, may_move_in_cost, may_move_out_cost):
	Move these definitions and associated target_globals fields to...
	* ira-int.h: ...here.
	* rtl.h (init_move_cost): Delete.
	* reginfo.c (last_mode_for_init_move_cost, init_move_cost): Move to...
	* ira.c: ...here, making the latter static.

From-SVN: r188043

gcc/
	* ira.h (target_ira): Delete x_ira_available_class_regs.
	(ira_available_class_regs): Delete.
	* ira.c (setup_available_class_regs): Delete.
	(setup_alloc_classes): Don't call it.
	(setup_pressure_classes): Use ira_class_hard_regs_num instead of
	ira_available_class_regs.
	* haifa-sched.c (print_curr_reg_pressure, setup_insn_reg_pressure_info)
	(model_spill_cost): Likewise.
	* ira-build.c (low_pressure_loop_node_p): Likewise.
	* ira-color.c (color_pass): Likewise.
	* ira-emit.c (change_loop): Likewise.
	* ira-lives.c (inc_register_pressure, dec_register_pressure)
	(single_reg_class, ira_implicitly_set_insn_hard_regs)
	(process_bb_node_lives): Likewise.
	* loop-invariant.c (gain_for_invariant): Likewise.

From-SVN: r188041

From-SVN: r188025

	* integrate.c: Remove.
	* integrate.h: Remove.
	* Makefile.in: Remove make rules for integrate.c and INTEGRATE_H.
	* config/arm/t-arm: Remove INTEGRATE_H dependency for target files.
	* config/rs6000/t-rs6000: Likewise
	* config/spu/t-spu-elf: Likewise.
	* function.h (get_hard_reg_initial_val, has_hard_reg_initial_val,
	get_hard_reg_initial_reg, emit_initial_value_sets): Move prototypes
	from integrate.h to here.
	(initial_value_entry): New prototype.
	* reload.h (allocate_initial_values): Remove prototype.
	* tree.h (set_decl_abstract_flags, set_decl_origin_self): Likewise.
	* cse.c (fixed_base_plus_p): Don't handle virtual registers for
	integrate.c.
	* dwarf2out.c (set_decl_origin_self, set_block_origin_self,
	set_decl_abstract_flags, set_block_abstract_flags): Move from
	integrate.c to here, the only user.
	* expmed.c (extract_fixed_bit_field): Remove outdated comment
	about integrate.c.
	* function.c: Don't include integrate.h.
	(struct initial_value_pair, struct initial_value_struct,
	get_hard_reg_initial_val, has_hard_reg_initial_val,
	get_hard_reg_initial_reg, emit_initial_value_sets): Move from
	integrate.c to here.
	(initial_value_entry): New function.
	* genemit.c (main): Don't print integrate.h include line.
	* ira.c: Don't include integrate.h.
	(allocate_initial_values): Move from integrate.c to here.
	(ira): Update allocate_initial_values call.
	* tree-inline.c: Don't include integrate.h.
	(function_attribute_inlinable_p): Moved from integrate.c to here.
	* cfgexpand.c: Don't include integrate.h.
	* except.c: Likewise.
	* langhooks.c: Likewise.
	* passes.c: Likewise.
	* toplev.c: Likewise.
	* config/frv/frv.c: Likewise.
	* config/pa/pa.c: Likewise.
	* config/spu/spu.c: Likewise.
	* config/epiphany/epiphany.c: Likewise.
	* config/mep/mep.c: Likewise.
	* config/score/score.c: Likewise.
	* config/picochip/picochip.c: Likewise.
	* config/sh/sh.c: Likewise.
	* config/alpha/alpha.c: Likewise.
	* config/microblaze/microblaze.c: Likewise.
	* config/mips/mips.c: Likewise.
	* config/v850/v850.c: Likewise.
	* config/mmix/mmix.c: Likewise.
	* config/bfin/bfin.c: Likewise.
	* config/arm/arm.c: Likewise.
	* config/s390/s390.c: Likewise.
	* config/m32r/m32r.c: Likewise.
	* config/rs6000/rs6000.c: Likewise.
	* config/c6x/c6x.c: Include function.h instead of integrate.h.
	* config/tilegx/tilegx.c: Likewise.
	* config/tilepro/tilepro.c: Likewise.

From-SVN: r187969

gcc/
	* ira.c (pseudo_move_insn): Delete.
	(find_moveable_pseudos): Don't set it.
	(move_unallocated_pseudos): Use DF_REG_DEF_CHAIN to find
	the definitions of the original pseudo.  Delete all of them.

From-SVN: r187582

	* ira.c (find_moveable_pseudos): Skip registers whose
	DF_REG_EQ_USE_COUNT is nonzero.

From-SVN: r187495

	* attribs.c (decl_attributes): Avoid emitting a warning if
	ATTR_FLAG_BUILT_IN.
	* doc/rtl.texi (CALL_INSN_FUNCTION_USAGE): Use lowercase for rtx
	codes.  Document meaning of sets inside CALL_INSN_FUNCTION_USAGE.
	* c-family/c-common.c (DEF_ATTR_STRING): Define and undefine as
	necessary.
	* builtin-attrs.def (DEF_ATTR_FOR_STRING): Define.  Use it to
	define a string "1".
	(ATTR_RET1_NOTHROW_NONNULL_LEAF): New attr definition.
	* builtins.def (BUILT_IN_MEMCPY, BUILT_IN_MEMMOVE, BUILT_IN_MEMSET,
	BUILT_IN_STRCPY): Use it for these functions.
	* postreload.c (reload_combine): Deal with SETs inside
	CALL_INSN_FUNCTION_USAGE.
	* caller-save.c (setup_save_areas, save_call_clobbered_regs):
	Look for REG_RETURNED notes and use a cheap restore if possible.
	* ira-int.h (struct ira_allocno): New member cheap_calls_crossed_num.
	(ALLOCNO_CHEAP_CALLS_CROSSED_NUM): New macro.
	* ira-build.c (ira_create_allocno, create_cap_allocno,
	propagate_allocno_info, propagate_some_info_from_allocno,
	copy_info_to_removed_store_destination, ira_flattening): Handle it.
	* ira-lives.c (pseudo_regno_single_word_and_live_p,
	find_call_crossed_cheap_reg): New static functions.
	(process_bb_node_lives): Look for SETs in CALL_INSN_FUNCTION_USAGE,
	and set ALLOCNO_CHEAP_CALLS_CROSSED_NUM if possible.  Also make
	a REG_RETURNED note in that case.
	* ira.c (setup_reg_renumber): Change assert to allow cases where
	allocnos only cross calls for which they are cheap to restore.
	* ira-costs.c (ira_tune_allocno_costs): Compare
	ALLOCNO_CALLS_CROSSED_NUM to ALLOCNO_CHEAP_CALLS_CROSSED_NUM rather
	than 0.
	* reg-notes.def (REG_RETURNED): New note.
	* cse.c (cse_insn): Likewise.
	* sched-deps.c (sched_analyze_insn): Likewise.
	* expr.c (init_block_move_fn): Set a "fn spec" attribute.
	* calls.c (decl_return_flags): New static function.
	(expand_call): Generate a SET in CALL_INSN_FUNCTION_USAGE for
	functions that return one of their arguments.
	* lto/lto-lang.c (handle_fnspec_attribute): New static function.
	(lto_attribute_table): Add "fn spec".
	(DEF_ATTR_STRING): Define and undefine along with the other macros.
	* regcprop.c (struct kill_set_value_data): New.
	(kill_set_value): Interpret data as a pointer to such a struct.
	Do nothing if the caller wants the register to be ignored.
	(copyprop_hardreg_forward_1): Handle SETs in CALL_INSN_FUNCTION_USAGE.

testsuite/
	* gcc.target/i386/retarg.c: New test.

From-SVN: r187459

2012-05-10  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/53125
	* ira.c (ira): Call find_moveable_pseudos or
	move_unallocated_pseudos if only ira_conflicts_p is true.

From-SVN: r187373

	* ira.c (allocated_reg_info_size): New static variable.
	(expand_reg_info): Manage it. Call
	setup_preferred_alternate_classes_for_new_pseudos.
	(ira): Don't do it here.  Remove local allocated_reg_info_size,
	set the global before calling find_moveable_pseudos.
	(find_moveable_pseudos): Call expand_reg_info rather than
	resize_reg_info.

From-SVN: r187019

	* PR middle-end/52997
	* ira.c (find_moveable_pseudos): Call resize_reg_info.

From-SVN: r186875

	* dbgcnt.def (ira_move): New counter.
	* ira-int.h (ira_create_new_reg): Declare function.
	(first_moveable_pseudo, last_moveable_pseudo): Declare variables.
	* ira-emit.c (ira_create_new_reg): Renamed from craete_new_reg and
	no longer static.  All callers changed.
	* ira.c: Include "dbgcnt.h".
	(rtx_moveable_p, insn_dominated_by_p, find_moveable_pseudos,
	move_unallocated_pseudos): New static functions.
	(first_moveable_pseudo, last_moveable_pseudo): New global variables.
	(pseudo_replaced_reg, pseudo_move_insn): New static variables.
	(ira): Call find_moveable_pseudos and move_unallocated_pseudos.
	* ira-costs.c (find_costs_and_classes): Assign a memory cost of zero
	to the pseudos generated in find_moveable_pseudos.
	* Makefile.in (ira.o): Add $(DBGCNT_H).

From-SVN: r186378

From-SVN: r186342

	* ira.c (check_allocation): Use REG_WORDS_BIG_ENDIAN, not
	WORDS_BIG_ENDIAN.
	* ira-color.c (setup_profitable_hard_regs, check_hard_reg_p,
	assign_hard_reg): Likewise.

From-SVN: r184451

gcc/
	* rtl.h (true_dependence, canon_true_dependence): Remove varies
	parameter.
	* alias.c (fixed_scalar_and_varying_struct_p): Delete.
	(true_dependence_1, write_dependence_p, may_alias_p): Don't call it.
	(true_dependence_1, true_dependence, canon_true_dependence): Remove
	varies parameter.
	* cselib.c (cselib_rtx_varies_p): Delete.
	(cselib_invalidate_mem): Update call to canon_true_dependence.
	* dse.c (record_store, check_mem_read_rtx): Likewise.
	(scan_reads_nospill): Likewise.
	* cse.c (check_dependence): Likewise.
	(cse_rtx_varies_p): Delete.
	* expr.c (safe_from_p): Update call to true_dependence.
	* ira.c (validate_equiv_mem_from_store): Likewise.
	(memref_referenced_p): Likewise.
	* postreload-gcse.c (find_mem_conflicts): Likewise.
	* sched-deps.c (sched_analyze_2): Likewise.
	* store-motion.c (load_kills_store): Likewise.
	* config/frv/frv.c (frv_registers_conflict_p_1): Likewise.
	* gcse.c (mems_conflict_for_gcse_p): Likewise.
	(compute_transp): Update call to canon_true_dependence.

From-SVN: r183485

2012-01-19  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/40761
	* ira-int.h (struct ira_loop_tree_node): Add comment for member
	loop.  Add new member loop_num.
	(IRA_LOOP_NODE_BY_INDEX): Modify the check.
	(ira_build): Remove the parameter.

	* ira.c (ira_print_disposition): Use loop_num instead of
	loop->num.
	(ira.c): Do not build CFG loops for one region allocation.  Remove
	argument from ira_build call.

	* ira-build.c (init_loop_tree_node): New function.
	(create_loop_tree_nodes): Use it.  Separate the case when CFG
	loops are not built.
	(more_one_region_p): Check current_loops.
	(finish_loop_tree_nodes): Separate the case when CFG loops are not
	built.
	(add_loop_to_tree): Process loop equal to NULL too.
	(form_loop_tree): Separate the case when CFG loops are not built.
	Use explicitly number for the root.
	(rebuild_regno_allocno_maps, create_loop_tree_node_allocnos): Add
	an assertion.
	(ira_print_expanded_allocno, loop_compare_func): Use loop_num
	instead of loop->num.
	(mark_loops_for_removal): Ditto.  Use loop_num instead of
	loop->num.
	(mark_all_loops_for_removal): Ditto.
	(remove_unnecessary_regions): Separate the case when CFG loops
	are not built.
	(ira_build): Remove the parameter.  Use explicit number of regions
	when CFG loops are not built.

	* ira-color.c (print_loop_title): Separate the case for the root
	node.  Use loop_num instead of loop->num.
	(move_spill_restore): Use loop_num instead of loop->num.

	* ira-emit.c (setup_entered_from_non_parent_p): Add an assertion.
	(change_loop): Ditto.
	(change_loop): Use loop_num instead of loop->num.

	* ira-lives.c (process_bb_node_lives): Ditto.

	* ira-costs.c (print_allocno_costs, find_costs_and_classes):
	Ditto.

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

From-SVN: r183312

2012-01-17  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* ira.c (do_reload): Make sure ira_dump_file is re-set if no
	reload dump is requested.

From-SVN: r183243

	* tree-pass.h (pass_reload): Declare.
	* ira.c (overall_cost_before, saved_flag_ira_share_spill_slots):
	New global variables, moved out of ira.
	(do_reload): New static function, split off from the second half
	of ...
	(ira): ... here.
	(gate_ira): Remove.
	(pass_ira): Use TV_IRA, set gate to NULL, and set flags to
	TODO_dump_func.
	(rest_of_handle_reload): New static function.
	(pass_reload): New.

From-SVN: r182624

2011-11-23  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/48455
	* doc/invoke.texi (-fira-region): Document default values.

	* flags-types.h (enum ira_region): Add new value
	IRA_REGION_AUTODETECT.

	* common.opt (fira-region): Set up initial value to
	IRA_REGION_AUTODETECT.

	* toplev.c (process_options): Set up flag_ira_region depending on
	-O options.

	* ira.c (ira.c): Remove optimize guard for ira_build.

From-SVN: r181675

ira.c (ira_init_register_move_cost): Check small subclasses through ira_reg_class_max_nregs and ira_available_class_regs.

2011-08-23  Vladimir Makarov  <vmakarov@redhat.com>

	* ira.c (ira_init_register_move_cost): Check small subclasses
	through ira_reg_class_max_nregs and ira_available_class_regs.

From-SVN: r178019

re PR rtl-optimization/49936 (IRA handles CANNOT_CHANGE_MODE_CLASS poorly, + spills to memory on 4.7)

2011-08-19  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/49936
	* ira.c (ira_init_register_move_cost): Ignore too small subclasses
	for calculation of max register move costs.

From-SVN: r177916

2011-08-17  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/50107
	* ira-int.h (ira_hard_reg_not_in_set_p): Remove.
	(ira_hard_reg_in_set_p): New.

	* ira-color.c (calculate_saved_nregs): New.
	(assign_hard_reg): Use it.  Set up allocated_hard_reg_p for all
	hard regs.
	(allocno_reload_assign, fast_allocation): Use
	ira_hard_reg_set_intersection_p instead of
	ira_hard_reg_not_in_set_p.

	* ira.c (setup_reg_renumber): Use
	ira_hard_reg_set_intersection_p instead of
	ira_hard_reg_not_in_set_p.
	(setup_allocno_assignment_flags, calculate_allocation_cost): Use
	ira_hard_reg_in_set_p instead of ira_hard_reg_not_in_set_p.

	* ira-costs.c (ira_tune_allocno_costs): Use
	ira_hard_reg_set_intersection_p instead of
	ira_hard_reg_not_in_set_p.

From-SVN: r177865

	* target.def (class_max_nregs): New hook.
	* doc/tm.texi.in (TARGET_CLASS_MAX_NREGS): Document.
	* doc/tm.texi: Regenerate.
	* targhooks.c (default_class_max_nregs): New function.
	* targhooks.h (default_class_max_nregs): Declare.
	* ira.h (target_ira): Change type x_ira_reg_class_max_nregs and
	x_ira_reg_class_min_nregs arrays to unsigned char.
	* ira.c (setup_reg_class_nregs): Use TARGET_CLASS_MAX_NREGS target
	hook instead of CLASS_MAX_NREGS macro.
	* reginfo.c (restore_register_info): Ditto.
	* ira-conflicts.c (process_regs_for_copy): Use
	ira_reg_class_max_nregs array instead of CLASS_MAX_NREGS macro.
	Change type rclass and aclass vars to reg_class_t.
	* ira-costs.c (record_reg_classes): Use ira_reg_class_max_nregs
	array instead of CLASS_MAX_NREGS macro. Change type rclass var to
	reg_class_t.
	* reload.c (combine_reloads, find_reloads, find_reloads_address_1):
	Use ira_reg_class_max_nregs array instead of CLASS_MAX_NREGS macro.

	* config/i386/i386.h (CLASS_MAX_NREGS): Remove.
	* config/i386/i386.c (ix86_class_max_nregs): New function.
	(ix86_register_move_cost): Use TARGET_CLASS_MAX_NREGS target hook
	instead of CLASS_MAX_NREGS macro.
	(TARGET_CLASS_MAX_NREGS): Define.
	* config/avr/avr.h (CLASS_MAX_NREGS): Remove.
	* config/avr/avr-protos.h (class_max_nregs): Remove declaration.
	* config/avr/avr.c (class_max_nregs): Remove function.
	* config/alpha/alpha.h (CLASS_MAX_NREGS): Remove.
	* config/spu/spu.h (CLASS_MAX_NREGS): Remove.
	* config/mep/mep.h (CLASS_MAX_NREGS): Remove.
	* config/m32r/m32r.h (CLASS_MAX_NREGS): Remove.
	* config/microblaze/microblaze.h (CLASS_MAX_NREGS): Remove.
	* config/xtensa/xtensa.h (CLASS_MAX_NREGS): Remove.
	* config/stormy16/stormy16.h (CLASS_MAX_NREGS): Remove.
	* config/lm32/lm32.h (CLASS_MAX_NREGS): Remove.
	* config/moxie/moxie.h (CLASS_MAX_NREGS): Remove.
	* config/iq2000/iq2000.h (CLASS_MAX_NREGS): Remove.
	* config/mn10300/mn10300.h (CLASS_MAX_NREGS): Remove.
	* config/score/score.h (CLASS_MAX_NREGS): Remove.
	* config/vax/vax.h (CLASS_MAX_NREGS): Remove.
	* config/h8300/h8300.h (CLASS_MAX_NREGS): Remove.
	* config/v850/v850.h (CLASS_MAX_NREGS): Remove.

From-SVN: r176490

re PR middle-end/48770 (wrong code with -O -fprofile-arcs -fPIC -fno-dce -fno-forward-propagate -fno-tree-forwprop)


	PR middle-end/48770
	* reload.h (reload): Change to return a bool.
	* ira.c (ira): If requested by reload, run a fast DCE pass after
	reload has completed.  Fix comment typo.
	* reload1.c (need_dce): New file scoped static.
	(reload): Set reload_completed here.  Return whether or not a DCE
	pass after reload is needed.
	(delete_dead_insn): Set need_dce as needed.

	PR middle-end/48770
	* gcc.dg/pr48770.c: New test.

From-SVN: r175353

From-SVN: r175051

re PR rtl-optimization/49154 (build fails on cris-elf in libgcc: ICE in setup_pressure_classes, at ira.c:902)

2011-05-26  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/49154
	* ira.c (setup_pressure_classes): Process class without sublcasses
	as a candidate for pressure classes.

From-SVN: r174309

2011-05-13  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/48971
	* ira.c (setup_pressure_classes): Don't check register move cost
	for classes with one registers.  Don't add pressure class if there
	is a pressure class with the same available hard registers.
	Check contains_reg_of_mode.  Fix a typo in collecting
	temp_hard_regset.  Ignore hard registers not belonging to a class.

From-SVN: r174123

ira.c (clarify_prohibited_class_mode_regs): Prevent the function from accessing beyond the end of REGNO_REG_CLASS array by...

         * ira.c (clarify_prohibited_class_mode_regs): Prevent the function from
          accessing beyond the end of REGNO_REG_CLASS array by stopping the
          loop early.

From-SVN: r173699

	* reginfo.c (memory_move_cost): Change rclass argument type form
	'enum reg_class' to reg_class_t.
	* reload.h (memory_move_cost): Update prototype.
	* postreload.c reload_cse_simplify_set): Change type dclass var to
	reg_class_t.
	* ira-int.h (ira_allocate_cost_vector, ira_free_cost_vector):
	Update prototype.
	(ira_allocate_and_set_costs): Change aclass argument type form
	'enum reg_class' to reg_class_t.
	* ira-build.c (ira_allocate_cost_vector, ira_free_cost_vector): 
	Change aclass argument type to reg_class_t.
	(update_conflict_hard_reg_costs): Change type aclass and pref vars
	to reg_class_t.
	* gcc/ira.c (setup_class_subset_and_memory_move_costs): Adjust
	memory_move_cost call.

	* config/ia64/ia64.c (ia64_register_move_cost): Remove 'from' and
	'to' local var. Rename from_i and to_i arguments to 'from' and 'to'.
	Change type tmp var to reg_class_t.

From-SVN: r173232

Change "if (E) free (E);" to "free (E);" everywhere except in the
libgo/, intl/, zlib/ and classpath/ directories.
Also transform equivalent variants like
"if (E != NULL) free (E);" and allow an extra cast on the
argument to free.  Otherwise, the tested and freed "E"
expressions must be identical, modulo white space.

From-SVN: r172785

2011-04-11  Vladimir Makarov  <vmakarov@redhat.com>

	PR middle-end/48464
	* ira.c (setup_pressure_classes): Fix typo in loop condition.
	(setup_allocno_and_important_classes): Ditto.

From-SVN: r172274

	* expr.c (expand_expr_real_1): Use add_to_hard_reg_set function
	instead of loop.
	* sel-sched.c (mark_unavailable_hard_regs): Likewise.
	* function.c (record_hard_reg_sets): Likewise.
	* ira.c (compute_regs_asm_clobbered): Likewise.
	* sched-deps.c (sched_analyze_1): Likewise.
	* reload1.c (mark_reload_reg_in_use, choose_reload_regs): Likewise.

From-SVN: r172231

2011-04-01  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/48380
	* ira.c (ira): Call grow_reg_equivs when fix_reg_equiv_init is
          not called.

	* ira-emit.c (emit_move_list): Update reg equiv init insn list.

From-SVN: r171951

	* reload.h (reg_equiv_constant): Move into new structure reg_equivs,
	define accessor macro.
	(reg_equiv_invariant, reg_equiv_memory_loc): Likewise.
	(reg_equiv_address, reg_equiv_mem, reg_equiv_alt_mem_list): Likewise.
	(reg_equiv_init): Likewise.
	(reg_equivs_size): New variable.
	(reg_equiv_init_size): Remove.
	(allocate_initial_values): Move prototype to here from....
	* integrate.h (allocate_initial_values): Remove prototype.
	* integrate.c: Include reload.h.
	(allocate_initial_values): Corresponding changes.
	* ira.c (find_reg_equiv_invariant_cost): Corresponding changes.
	(fix_reg_equiv_init, no_equiv): Corresponding changes.
	(update_equiv_regs): Corresponding changes.
	(ira): Corresponding changes.
	* reload.c (push_reg_equiv_alt_mem): Corresponding changes.
	(push_secondary_reload): Corresponding changes.
	(push_reload, find_reloads, find_reloads_toplev): Corresponding changes.
	(make_memloc, find_reloads_address): Corresponding changes.
	(subst_reg_equivs, subst_indexed_address): Corresponding changes.
	(find_reloads_address_1): Corresponding changes.
	(find_reloads_subreg_address, subst_reloads): Corresponding changes.
	(refers_to_regno_for_reload_p): Corresponding changes.
	(reg_overlap_mentioned_for_reload_p): Corresponding changes.
	(refers_to_mem_for_reload_p, find_equiv_reg): Corresponding changes.
	* reload1.c: Include ggc.h.
	(grow_reg_equivs): New function.
	(replace_pseudos_in, reload): Corresponding changes.
	(calculate_needs_all_insns, alter_regs): Corresponding changes.
	(eliminate_regs_1, elimination_effects): Corresponding changes.
	(emit_input_reload_insns, emit_output_reload_insns): Likewise.
	(delete_output_reload): Likewise.
	* caller-save.c (mark_referenced_regs): Corresponding changes.
	* alpha/alpha.c (resolve_reload_operand): Corresponding changes.
	* frv/predicates.md (frv_load_operand): Corresponding changes.
	* microblaze/microblaze.c (double_memory_operand): Corresponding
	changes.
	* avr/avr.h (LEGITIMIZE_RELOAD_ADDRESS): Corresponding changes.
	* xtensa/xtensa.c (fixup_subreg_mem): Corresponding changes.
	* mn10300/mn10300.c (mn10300_secondary_reload): Corresponding
	changes.
	* m68k/m68k.c (emit_move_sequence): Corresponding changes.
	* arm/arm.c (arm_reload_in_hi, arm_reload_out_hi): Corresponding
	changes.
	* pa/pa.c (emit_move_sequence): Corresponding changes.
	* vax/vax.c (nonindexed_address_p): Corresponding changes.

From-SVN: r171731

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.

From-SVN: r171649

2011-03-27  Vladimir Makarov  <vmakarov@redhat.com>

	PR bootstrap/48307
	Revert the previous patch.

From-SVN: r171589