--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Thu Apr 04 21:15:43 2013 -0700
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Tue Apr 09 17:17:41 2013 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -271,6 +271,20 @@
   addptr(cache, tmp);  // construct pointer to cache entry
 }
 
+void InterpreterMacroAssembler::get_method_counters(Register method,
+                                                    Register mcs, Label& skip) {
+  Label has_counters;
+  movptr(mcs, Address(method, Method::method_counters_offset()));
+  testptr(mcs, mcs);
+  jcc(Assembler::notZero, has_counters);
+  call_VM(noreg, CAST_FROM_FN_PTR(address,
+          InterpreterRuntime::build_method_counters), method);
+  movptr(mcs, Address(method,Method::method_counters_offset()));
+  testptr(mcs, mcs);
+  jcc(Assembler::zero, skip); // No MethodCounters allocated, OutOfMemory
+  bind(has_counters);
+}
+
 // Load object from cpool->resolved_references(index)
 void InterpreterMacroAssembler::load_resolved_reference_at_index(
                                            Register result, Register index) {