--- old/src/hotspot/share/opto/graphKit.hpp	2018-10-10 10:10:45.281887659 +0200
+++ new/src/hotspot/share/opto/graphKit.hpp	2018-10-10 10:10:44.917705664 +0200
@@ -681,6 +681,9 @@
   // callee (with all arguments still on the stack).
   Node* null_check_receiver_before_call(ciMethod* callee) {
     assert(!callee->is_static(), "must be a virtual method");
+    if (argument(0)->is_ValueType()) {
+      return argument(0);
+    }
     // Callsite signature can be different from actual method being called (i.e _linkTo* sites).
     // Use callsite signature always.
     ciMethod* declared_method = method()->get_method_at_bci(bci());