--- a/hotspot/src/share/vm/opto/loopTransform.cpp	Thu Aug 06 13:00:44 2015 -0700
+++ b/hotspot/src/share/vm/opto/loopTransform.cpp	Mon Aug 10 10:39:19 2015 -0700
@@ -1282,7 +1282,7 @@
 
   if (C->do_vector_loop() && (PrintOpto && VerifyLoopOptimizations || TraceLoopOpts)) {
     Arena* arena = Thread::current()->resource_area();
-    Node_Stack stack(arena, C->unique() >> 2);
+    Node_Stack stack(arena, C->live_nodes() >> 2);
     Node_List rpo_list;
     VectorSet visited(arena);
     visited.set(loop_head->_idx);