From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 5 Mar 2013 09:40:38 +0000 (+0100)
Subject: * alias.c (init_alias_analysis): Clear reg_known_equiv_p bitmap.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dd3d1ec00198be9146593e68a18b015480015f28;p=gcc.git

* alias.c (init_alias_analysis): Clear reg_known_equiv_p bitmap.

From-SVN: r196456
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index aefbb608727..e55cebe7b3b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,7 @@
 2013-03-05  Jakub Jelinek  <jakub@redhat.com>
 
+	* alias.c (init_alias_analysis): Clear reg_known_equiv_p bitmap.
+
 	PR middle-end/56461
 	* tree-vect-slp.c (vect_supported_load_permutation_p): Free
 	load_index sbitmap even if some bit in it isn't set.
diff --git a/gcc/alias.c b/gcc/alias.c
index e18dd342f6d..970bdb0ee9a 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -2812,6 +2812,7 @@ init_alias_analysis (void)
 
   vec_safe_grow_cleared (reg_known_value, maxreg - FIRST_PSEUDO_REGISTER);
   reg_known_equiv_p = sbitmap_alloc (maxreg - FIRST_PSEUDO_REGISTER);
+  bitmap_clear (reg_known_equiv_p);
 
   /* If we have memory allocated from the previous run, use it.  */
   if (old_reg_base_value)