--- /dev/null	2017-03-07 11:44:12.271151064 +0100
+++ new/src/share/vm/metaprogramming/isDerived.hpp	2017-07-27 17:46:48.783146505 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_METAPROGRAMMING_ISDERIVED_HPP
+#define SHARE_VM_METAPROGRAMMING_ISDERIVED_HPP
+
+#include "memory/allocation.hpp"
+#include "metaprogramming/integralConstant.hpp"
+#include "metaprogramming/isSame.hpp"
+
+// The IsDerived metafunction checks if a DerivedType is derived from a BaseType
+// or not. This will return false when used on a forward declared class.
+// Note that due to the ODR rule of C++, this metafunction must be used with care
+// in contexts where the DerivedType is guaranteed to be fully known.
+
+template <typename DerivedType, typename BaseType>
+struct IsDerivedHelper: public StackObj {
+  operator BaseType* () const;
+  operator DerivedType* ();
+};
+
+template <typename DerivedType, typename BaseType>
+struct IsDerivedImpl: public AllStatic {
+  typedef char yes[1];
+  typedef char no[2];
+
+  template <typename T>
+  static yes& test(DerivedType*, T);
+  static no& test(BaseType*, int);
+
+  static const bool value = IsSame<DerivedType, BaseType>::value ||
+    sizeof(test(IsDerivedHelper<DerivedType, BaseType>(), 0)) == sizeof(yes);
+};
+
+template <typename DerivedType, typename BaseType>
+struct IsDerived: public IntegralConstant<bool, IsDerivedImpl<DerivedType, BaseType>::value> {};
+
+#endif // SHARE_VM_METAPROGRAMMING_ISDERIVED_HPP