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authorJan Hubicka <jh@suse.cz>2012-04-23 12:04:48 +0200
committerJan Hubicka <hubicka@gcc.gnu.org>2012-04-23 10:04:48 +0000
commit837a549ba82a0e15b1b4314e9de83d274350e1d4 (patch)
treefcd88e6b22ce727b6e8cdade7b6442b45fb973bb /gcc/tree-ssa-loop-ivopts.c
parentf67b870a8e39501b8d09e8694213b430f3d9663c (diff)
downloadgcc-837a549ba82a0e15b1b4314e9de83d274350e1d4.tar.gz
* tree-ssa-loop-ivopts.c (expr_invariant_in_loop_p): Bail out at NULL tree refs.
From-SVN: r186693
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
-rw-r--r--gcc/tree-ssa-loop-ivopts.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index 3c11c0e4834..d346e0034e0 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -1411,7 +1411,8 @@ expr_invariant_in_loop_p (struct loop *loop, tree expr)
len = TREE_OPERAND_LENGTH (expr);
for (i = 0; i < len; i++)
- if (!expr_invariant_in_loop_p (loop, TREE_OPERAND (expr, i)))
+ if (TREE_OPERAND (expr, i)
+ && !expr_invariant_in_loop_p (loop, TREE_OPERAND (expr, i)))
return false;
return true;