--- old/src/cpu/sparc/vm/sparc.ad	2011-07-22 11:55:08.650124080 +0200
+++ new/src/cpu/sparc/vm/sparc.ad	2011-07-22 11:55:08.426773347 +0200
@@ -6606,8 +6606,7 @@
 %}
 
 instruct membar_acquire_lock() %{
-  match(MemBarAcquire);
-  predicate(Matcher::prior_fast_lock(n));
+  match(MemBarAcquireLock);
   ins_cost(0);
 
   size(0);
@@ -6627,8 +6626,7 @@
 %}
 
 instruct membar_release_lock() %{
-  match(MemBarRelease);
-  predicate(Matcher::post_fast_unlock(n));
+  match(MemBarReleaseLock);
   ins_cost(0);
 
   size(0);