From: Teresa Johnson <tejohnson@google.com>
Date: Wed, 15 Jan 2014 21:21:32 +0000 (+0000)
Subject: tree-ssa-sccvn.c (visit_reference_op_call): Handle NULL vdef.
X-Git-Tag: releases/gcc-4.9.0~1647
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4583fada2d37b41c5681b9f381f9251c1a5356dc;p=thirdparty%2Fgcc.git

tree-ssa-sccvn.c (visit_reference_op_call): Handle NULL vdef.

2014-01-15  Teresa Johnson  <tejohnson@google.com>

	* tree-ssa-sccvn.c (visit_reference_op_call): Handle NULL vdef.

From-SVN: r206646
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c3ff69ef71fd..c93bf23f2a94 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2014-01-15  Teresa Johnson  <tejohnson@google.com>
+
+	* tree-ssa-sccvn.c (visit_reference_op_call): Handle NULL vdef.
+
 2014-01-15  Bill Schmidt  <wschmidt@vnet.linux.ibm.com>
 
 	* config/rs6000/altivec.md (mulv8hi3): Explicitly generate vmulesh
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index 65b8ce6b97b7..f7ec8b6d60b8 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -2792,7 +2792,7 @@ visit_reference_op_call (tree lhs, gimple stmt)
 
   if (vnresult)
     {
-      if (vnresult->result_vdef)
+      if (vnresult->result_vdef && vdef)
 	changed |= set_ssa_val_to (vdef, vnresult->result_vdef);
 
       if (!vnresult->result && lhs)