diff -r 6987871cfb9b -r 95134e034042 src/share/vm/opto/node.hpp
--- a/src/share/vm/opto/node.hpp	Wed Aug 10 14:06:57 2011 -0700
+++ b/src/share/vm/opto/node.hpp	Thu Aug 11 12:08:11 2011 -0700
@@ -637,7 +637,8 @@
     Flag_is_Branch           = Flag_is_cisc_alternate << 1,
     Flag_is_dead_loop_safe   = Flag_is_Branch << 1,
     Flag_may_be_short_branch = Flag_is_dead_loop_safe << 1,
-    _max_flags = (Flag_may_be_short_branch << 1) - 1 // allow flags combination
+    Flag_avoid_back_to_back  = Flag_may_be_short_branch << 1,
+    _max_flags = (Flag_avoid_back_to_back << 1) - 1 // allow flags combination
   };
 
 private: