--- old/src/share/vm/opto/type.cpp	2017-06-29 10:55:31.148126103 +0200
+++ new/src/share/vm/opto/type.cpp	2017-06-29 10:55:30.952126113 +0200
@@ -261,7 +261,11 @@
     return TypeRawPtr::make((address)(intptr_t)type->as_return_address()->bci());
 
   case T_VALUETYPE:
-    return TypeValueType::make(type->as_value_klass());
+    if (type == ciEnv::current()->___Value_klass()) {
+      return TypeValueTypePtr::NOTNULL;
+    } else {
+      return TypeValueType::make(type->as_value_klass());
+    }
 
   default:
     // make sure we did not mix up the cases: