--- a/hotspot/src/cpu/x86/vm/x86_32.ad	Fri Nov 22 12:14:09 2013 -0800
+++ b/hotspot/src/cpu/x86/vm/x86_32.ad	Tue Nov 26 18:38:19 2013 -0800
@@ -7096,6 +7096,7 @@
 
 instruct membar_acquire() %{
   match(MemBarAcquire);
+  match(LoadFence);
   ins_cost(400);
 
   size(0);
@@ -7116,6 +7117,7 @@
 
 instruct membar_release() %{
   match(MemBarRelease);
+  match(StoreFence);
   ins_cost(400);
 
   size(0);