diff -r a19c671188cb -r f1c12354c3f7 src/share/vm/opto/macro.cpp
--- a/src/share/vm/opto/macro.cpp	Mon Aug 08 13:19:46 2011 -0700
+++ b/src/share/vm/opto/macro.cpp	Tue Aug 02 18:36:40 2011 +0200
@@ -1816,9 +1816,9 @@
   // The input to a Lock is merged memory, so extract its RawMem input
   // (unless the MergeMem has been optimized away.)
   if (alock->is_Lock()) {
-    // Seach for MemBarAcquire node and delete it also.
+    // Seach for MemBarAcquireLock node and delete it also.
     MemBarNode* membar = fallthroughproj->unique_ctrl_out()->as_MemBar();
-    assert(membar != NULL && membar->Opcode() == Op_MemBarAcquire, "");
+    assert(membar != NULL && membar->Opcode() == Op_MemBarAcquireLock, "");
     Node* ctrlproj = membar->proj_out(TypeFunc::Control);
     Node* memproj = membar->proj_out(TypeFunc::Memory);
     _igvn.replace_node(ctrlproj, fallthroughproj);
@@ -1833,11 +1833,11 @@
     }
   }
 
-  // Seach for MemBarRelease node and delete it also.
+  // Seach for MemBarReleaseLock node and delete it also.
   if (alock->is_Unlock() && ctrl != NULL && ctrl->is_Proj() &&
       ctrl->in(0)->is_MemBar()) {
     MemBarNode* membar = ctrl->in(0)->as_MemBar();
-    assert(membar->Opcode() == Op_MemBarRelease &&
+    assert(membar->Opcode() == Op_MemBarReleaseLock &&
            mem->is_Proj() && membar == mem->in(0), "");
     _igvn.replace_node(fallthroughproj, ctrl);
     _igvn.replace_node(memproj_fallthrough, mem);