--- a/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl.java	Wed Oct 11 17:11:28 2017 -0700
+++ b/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl.java	Thu Oct 19 19:23:48 2017 -0700
@@ -777,4 +777,8 @@
         }
         return compilerToVM().hasCompiledCodeForOSR(this, entryBCI, level);
     }
+
+    public int methodIdnum() {
+        return UNSAFE.getChar(getConstMethod() + config().constMethodMethodIdnumOffset);
+    }
 }