diff -r eb178e97560c -r 2113136690bc src/share/vm/opto/generateOptoStub.cpp
--- a/src/share/vm/opto/generateOptoStub.cpp	Thu Nov 07 11:47:11 2013 +0100
+++ b/src/share/vm/opto/generateOptoStub.cpp	Fri Nov 15 11:05:32 2013 -0800
@@ -104,13 +104,12 @@
   //
   Node *adr_sp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_sp_offset()));
   Node *last_sp = basic_plus_adr(top(), frameptr(), (intptr_t) STACK_BIAS);
-  store_to_memory(NULL, adr_sp, last_sp, T_ADDRESS, NoAlias);
+  store_to_memory(NULL, adr_sp, last_sp, T_ADDRESS, NoAlias, MemNode::unordered);
 
   // Set _thread_in_native
   // The order of stores into TLS is critical!  Setting _thread_in_native MUST
   // be last, because a GC is allowed at any time after setting it and the GC
   // will require last_Java_pc and last_Java_sp.
-  Node* adr_state = basic_plus_adr(top(), thread, in_bytes(JavaThread::thread_state_offset()));
 
   //-----------------------------
   // Compute signature for C call.  Varies from the Java signature!
@@ -225,16 +224,15 @@
   //-----------------------------
 
   // Clear last_Java_sp
-  store_to_memory(NULL, adr_sp, null(), T_ADDRESS, NoAlias);
+  store_to_memory(NULL, adr_sp, null(), T_ADDRESS, NoAlias, MemNode::unordered);
   // Clear last_Java_pc and (optionally)_flags
-  store_to_memory(NULL, adr_last_Java_pc, null(), T_ADDRESS, NoAlias);
+  store_to_memory(NULL, adr_last_Java_pc, null(), T_ADDRESS, NoAlias, MemNode::unordered);
 #if defined(SPARC)
-  store_to_memory(NULL, adr_flags, intcon(0), T_INT, NoAlias);
+  store_to_memory(NULL, adr_flags, intcon(0), T_INT, NoAlias, MemNode::unordered);
 #endif /* defined(SPARC) */
 #if (defined(IA64) && !defined(AIX))
   Node* adr_last_Java_fp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_fp_offset()));
-  if( os::is_MP() ) insert_mem_bar(Op_MemBarRelease);
-  store_to_memory(NULL, adr_last_Java_fp,    null(),    T_ADDRESS, NoAlias);
+  store_to_memory(NULL, adr_last_Java_fp, null(), T_ADDRESS, NoAlias, MemNode::unordered);
 #endif
 
   // For is-fancy-jump, the C-return value is also the branch target
@@ -242,16 +240,16 @@
   // Runtime call returning oop in TLS?  Fetch it out
   if( pass_tls ) {
     Node* adr = basic_plus_adr(top(), thread, in_bytes(JavaThread::vm_result_offset()));
-    Node* vm_result = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false);
+    Node* vm_result = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, MemNode::unordered);
     map()->set_req(TypeFunc::Parms, vm_result); // vm_result passed as result
     // clear thread-local-storage(tls)
-    store_to_memory(NULL, adr, null(), T_ADDRESS, NoAlias);
+    store_to_memory(NULL, adr, null(), T_ADDRESS, NoAlias, MemNode::unordered);
   }
 
   //-----------------------------
   // check exception
   Node* adr = basic_plus_adr(top(), thread, in_bytes(Thread::pending_exception_offset()));
-  Node* pending = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false);
+  Node* pending = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, MemNode::unordered);
 
   Node* exit_memory = reset_memory();