--- old/src/share/vm/opto/cfgnode.cpp	2015-09-15 15:43:35.094997303 +0200
+++ new/src/share/vm/opto/cfgnode.cpp	2015-09-15 15:43:34.882997293 +0200
@@ -791,7 +791,7 @@
   Compile *C = igvn->C;
   Arena *a = Thread::current()->resource_area();
   Node_Array node_map = new Node_Array(a);
-  Node_Stack stack(a, C->unique() >> 4);
+  Node_Stack stack(a, C->live_nodes() >> 4);
   PhiNode *nphi = slice_memory(at);
   igvn->register_new_node_with_optimizer( nphi );
   node_map.map(_idx, nphi);