--- old/src/share/vm/runtime/sharedRuntime.cpp	2017-06-21 13:07:30.662590534 +0200
+++ new/src/share/vm/runtime/sharedRuntime.cpp	2017-06-21 13:07:30.582590531 +0200
@@ -1374,10 +1374,6 @@
     if (ValueTypePassFieldsAsArgs && callee_method->method_holder()->is_value()) {
       // If the receiver is a value type that is passed as fields, no oop is available
       receiver_klass = callee_method->method_holder();
-      if (FullGCALotWithValueTypes) {
-        // Trigger a full GC to verify that the GC knows about the contents of oop fields
-        Universe::heap()->collect(GCCause::_full_gc_alot);
-      }
     } else {
       assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check");
       receiver_klass = invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass();
@@ -3048,6 +3044,7 @@
     case 'S': sig_bt[cnt++] = T_SHORT;   break;
     case 'Z': sig_bt[cnt++] = T_BOOLEAN; break;
     case 'V': sig_bt[cnt++] = T_VOID;    break;
+    case 'Q':
     case 'L':                   // Oop
       while (*s++ != ';');   // Skip signature
       sig_bt[cnt++] = T_OBJECT;
@@ -3057,7 +3054,7 @@
         while (*s >= '0' && *s <= '9') s++;
       } while (*s++ == '[');   // Nested arrays?
       // Skip element type
-      if (s[-1] == 'L')
+      if (s[-1] == 'L' || s[-1] == 'Q')
         while (*s++ != ';'); // Skip signature
       sig_bt[cnt++] = T_ARRAY;
       break;