diff -r 9d3abb1b7b1f -r 35ebea32a23c src/hotspot/share/code/nmethod.cpp
--- a/src/hotspot/share/code/nmethod.cpp	Mon Nov 05 12:36:23 2018 +0100
+++ b/src/hotspot/share/code/nmethod.cpp	Mon Nov 05 12:36:23 2018 +0100
@@ -42,6 +42,7 @@
 #include "logging/logStream.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/resourceArea.hpp"
+#include "oops/access.inline.hpp"
 #include "oops/method.inline.hpp"
 #include "oops/methodData.hpp"
 #include "oops/oop.inline.hpp"
@@ -1334,6 +1335,13 @@
   CodeCache::free(this);
 }
 
+oop nmethod::oop_at(int index) const {
+  if (index == 0) {
+    return NULL;
+  }
+  return NativeAccess<AS_NO_KEEPALIVE>::oop_load(oop_addr_at(index));
+}
+
 //
 // Notify all classes this nmethod is dependent on that it is no
 // longer dependent. This should only be called in two situations.