params.def (PARAM_IRA_LOOP_RESERVED_REGS): New.

2009-09-26  Vladimir Makarov  <vmakarov@redhat.com>

	* params.def (PARAM_IRA_LOOP_RESERVED_REGS): New.
	* params.h (IRA_LOOP_RESERVED_REGS): New
	* tree-pass.h (pass_subregs_of_mode_init,
	pass_subregs_of_mode_finish): Remove.
	* passes.c (pass_subregs_of_mode_init,
	pass_subregs_of_mode_finish): Remove.
	(pass_reginfo_init): Move before loop optimizations.
	* config/i386/i386.h (STACK_REG_COVER_CLASS): Define.
	* common.opt (fira-loop-pressure): New.
	* toplev.h (flag_ira_loop_pressure): New.
	* rtl.h (init_subregs_of_mode, finish_subregs_of_mode): New
	externals.
	* reginfo.c (init_subregs_of_mode, finish_subregs_of_mode):
	Make external and void type functions.
	(gate_subregs_of_mode_init, pass_subregs_of_mode_init,
	pass_subregs_of_mode_finish): Remove.
	* ira-costs.c (init_costs): Call init_subregs_of_mode.
	* regmove.c: Include ira.h.
	(regmove_optimize): Call ira_set_pseudo_classes after IRA based
	register pressure calculation in loops.
	* loop-invariant.c: Include REGS_H and ira.h.
	(struct loop_data): New members max_reg_pressure, regs_ref, and
	regs_live.
	(struct invariant): New member orig_regno.
	(curr_loop): New variable.
	(find_exits): Initialize regs_ref and regs_live.
	(create_new_invariant): Initialize orig_regno.
	(get_cover_class_and_nregs): New.
	(get_inv_cost): Make aregs_needed an array.  Use regs_needed as an
	array.  Add code for flag_ira_loop_pressure.
	(gain_for_invariant): Make new_regs an array.  Add code for
	flag_ira_loop_pressure.
	(best_gain_for_invariant): Ditto.
	(set_move_mark): New parameter gain.  Use it for debugging output.
	(find_invariants_to_move): Make regs_needed and new_regs an array.
	Add code for flag_ira_loop_pressure.
	(move_invariant_reg): Set up orig_regno.
	(move_invariants): Set up reg classes for pseudos for
	flag_ira_loop_pressure.
	(free_loop_data): Clear regs_ref and regs_live.
	(curr_regs_live, curr_reg_pressure, regs_set, n_regs_set,
	get_regno_cover_class, change_pressure, mark_regno_live,
	mark_regno_death, mark_reg_store, mark_reg_clobber,
	mark_reg_death, mark_ref_regs, calculate_loop_reg_pressure): New.
	(move_loop_invariants): Calculate pressure.  Initialize curr_loop.
	* ira.c (ira): Call ira_set_pseudo_classes after IRA based
	register pressure calculation in loops if new regs were added.
	Call finish_subregs_of_mode.
	* opts.c (decode_options): Set up flag_ira_loop_pressure.
	* Makefile.in (loop-invariant.o): Add ira.h.
	(regmove.o): Ditto.
	* doc/invoke.texi (-fira-loop-pressure, ira-loop-reserved-regs):
	Describe.
	* doc/tm.texi (STACK_REG_COVER_CLASS): Describe.

From-SVN: r152770

1 files changed, 1 insertions, 3 deletions

diff --git a/gcc/passes.c b/gcc/passes.c
index 5a47215..2d11c1f 100644
--- a/gcc/passes.c
+++ b/gcc/passes.c
@@ -943,6 +943,7 @@ init_optimization_passes (void)
       NEXT_PASS (pass_rtl_store_motion);
       NEXT_PASS (pass_cse_after_global_opts);
       NEXT_PASS (pass_rtl_ifcvt);
+      NEXT_PASS (pass_reginfo_init);
       /* Perform loop optimizations.  It might be better to do them a bit
 	 sooner, but we want the profile feedback to work more
 	 efficiently.  */
@@ -962,7 +963,6 @@ init_optimization_passes (void)
       NEXT_PASS (pass_cse2);
       NEXT_PASS (pass_rtl_dse1);
       NEXT_PASS (pass_rtl_fwprop_addr);
-      NEXT_PASS (pass_reginfo_init);
       NEXT_PASS (pass_inc_dec);
       NEXT_PASS (pass_initialize_regs);
       NEXT_PASS (pass_ud_rtl_dce);
@@ -978,10 +978,8 @@ init_optimization_passes (void)
       NEXT_PASS (pass_mode_switching);
       NEXT_PASS (pass_match_asm_constraints);
       NEXT_PASS (pass_sms);
-      NEXT_PASS (pass_subregs_of_mode_init);
       NEXT_PASS (pass_sched);
       NEXT_PASS (pass_ira);
-      NEXT_PASS (pass_subregs_of_mode_finish);
       NEXT_PASS (pass_postreload);
 	{
 	  struct opt_pass **p = &pass_postreload.pass.sub;