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

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
4583fada · Teresa Johnson · Teresa Johnson · 67bf2939 · 4583fada · 4583fada
Commit 4583fada authored Jan 15, 2014 by Teresa Johnson Committed by Teresa Johnson Jan 15, 2014
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gcc/ChangeLog
+4 -0

gcc/tree-ssa-sccvn.c
+1 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+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

--- 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)