From: jasonwucj <jasonwucj@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 16 Sep 2014 05:24:31 +0000 (+0000)
Subject: Clean up useless initialization for IRA if using LRA.
X-Git-Tag: upstream/5.3.0~5506
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=432ebf7404acf56778fa031700db3628af6e4359;p=platform%2Fupstream%2Flinaro-gcc.git

Clean up useless initialization for IRA if using LRA.

gcc/
	* ira.c (ira): Don't initialize ira_spilled_reg_stack_slots and
	ira_spilled_reg_stack_slots_num if using lra.
	(do_reload): Remove release ira_spilled_reg_stack_slots part.
	* ira-color.c (ira_sort_regnos_for_alter_reg): Add assertion to
	make sure not using lra.
	(ira_reuse_stack_slot): Likewise.
	(ira_mark_new_stack_slot): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215286 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8d4f5ba..86544e2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2014-09-16  Kito Cheng  <kito@0xlab.org>
+
+	* ira.c (ira): Don't initialize ira_spilled_reg_stack_slots and
+	ira_spilled_reg_stack_slots_num if using lra.
+	(do_reload): Remove release ira_spilled_reg_stack_slots part.
+	* ira-color.c (ira_sort_regnos_for_alter_reg): Add assertion to
+	make sure not using lra.
+	(ira_reuse_stack_slot): Likewise.
+	(ira_mark_new_stack_slot): Likewise.
+
 2014-09-15  Andi Kleen  <ak@linux.intel.com>
 
 	* function.c (allocate_struct_function): Force
diff --git a/gcc/ira-color.c b/gcc/ira-color.c
index e2ea359..6846567 100644
--- a/gcc/ira-color.c
+++ b/gcc/ira-color.c
@@ -4067,6 +4067,8 @@ ira_sort_regnos_for_alter_reg (int *pseudo_regnos, int n,
   ira_allocno_iterator ai;
   ira_allocno_t *spilled_coalesced_allocnos;
 
+  ira_assert (! ira_use_lra_p);
+
   /* Set up allocnos can be coalesced.  */
   coloring_allocno_bitmap = ira_allocate_bitmap ();
   for (i = 0; i < n; i++)
@@ -4416,6 +4418,8 @@ ira_reuse_stack_slot (int regno, unsigned int inherent_size,
   bitmap_iterator bi;
   struct ira_spilled_reg_stack_slot *slot = NULL;
 
+  ira_assert (! ira_use_lra_p);
+
   ira_assert (inherent_size == PSEUDO_REGNO_BYTES (regno)
 	      && inherent_size <= total_size
 	      && ALLOCNO_HARD_REGNO (allocno) < 0);
@@ -4528,6 +4532,8 @@ ira_mark_new_stack_slot (rtx x, int regno, unsigned int total_size)
   int slot_num;
   ira_allocno_t allocno;
 
+  ira_assert (! ira_use_lra_p);
+
   ira_assert (PSEUDO_REGNO_BYTES (regno) <= total_size);
   allocno = ira_regno_allocno_map[regno];
   slot_num = -ALLOCNO_HARD_REGNO (allocno) - 2;
diff --git a/gcc/ira.c b/gcc/ira.c
index dc69a9c..f377f7d 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -5260,14 +5260,16 @@ ira (FILE *f)
 #ifdef ENABLE_IRA_CHECKING
       print_redundant_copies ();
 #endif
-
-      ira_spilled_reg_stack_slots_num = 0;
-      ira_spilled_reg_stack_slots
-	= ((struct ira_spilled_reg_stack_slot *)
-	   ira_allocate (max_regno
-			 * sizeof (struct ira_spilled_reg_stack_slot)));
-      memset (ira_spilled_reg_stack_slots, 0,
-	      max_regno * sizeof (struct ira_spilled_reg_stack_slot));
+      if (! ira_use_lra_p)
+	{
+	  ira_spilled_reg_stack_slots_num = 0;
+	  ira_spilled_reg_stack_slots
+	    = ((struct ira_spilled_reg_stack_slot *)
+	       ira_allocate (max_regno
+			     * sizeof (struct ira_spilled_reg_stack_slot)));
+	  memset (ira_spilled_reg_stack_slots, 0,
+		  max_regno * sizeof (struct ira_spilled_reg_stack_slot));
+	}
     }
   allocate_initial_values ();
 
@@ -5303,9 +5305,6 @@ do_reload (void)
       FOR_ALL_BB_FN (bb, cfun)
 	bb->loop_father = NULL;
       current_loops = NULL;
-      
-      if (ira_conflicts_p)
-	ira_free (ira_spilled_reg_stack_slots);
 
       ira_destroy ();