--- old/hotspot/test/runtime/valhalla/valuetypes/VboxUnbox.java	2017-06-28 16:02:03.000000000 +0800
+++ new/hotspot/test/runtime/valhalla/valuetypes/VboxUnbox.java	2017-06-28 16:02:03.000000000 +0800
@@ -33,7 +33,9 @@
  * @library /test/lib
  * @build runtime.valhalla.valuetypes.ValueCapableClass
  * @run main/othervm -Xint -noverify -XX:+EnableMVT runtime.valhalla.valuetypes.VboxUnbox
- * @run main/othervm -Xcomp -noverify -XX:+EnableMVT runtime.valhalla.valuetypes.VboxUnbox
+ * @run main/othervm -Xcomp -noverify -XX:+EnableMVT
+ *                   -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_isAssignableFrom
+ *                   runtime.valhalla.valuetypes.VboxUnbox
  */
 public class VboxUnbox {