--- /dev/null	2019-03-11 09:22:42.048915961 +0100
+++ new/src/hotspot/share/oops/valueArrayOop.hpp	2019-03-11 14:26:29.486354833 +0100
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2015, 2018, 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_OOPS_VALUEARRAYOOP_HPP
+#define SHARE_VM_OOPS_VALUEARRAYOOP_HPP
+
+#include "oops/arrayOop.hpp"
+#include "oops/klass.hpp"
+#include "oops/oop.inline.hpp"
+
+// A valueArrayOop is an array containing value types (may include flatten embedded oop elements).
+
+class valueArrayOopDesc : public arrayOopDesc {
+
+ public:
+  void*  base() const;
+  void* value_at_addr(int index, jint lh) const;
+  // Sizing
+  static size_t element_size(int lh, int nof_elements) {
+    return nof_elements << Klass::layout_helper_log2_element_size(lh);
+  }
+
+  static int object_size(int lh, int length) {
+    julong size_in_bytes = header_size_in_bytes() + element_size(lh, length);
+    julong size_in_words = ((size_in_bytes + (HeapWordSize-1)) >> LogHeapWordSize);
+    assert(size_in_words <= (julong)max_jint, "no overflow");
+    return align_object_size((intptr_t)size_in_words);
+  }
+
+  int object_size() const;
+
+};
+
+#endif // SHARE_VM_OOPS_VALUEARRAYOOP_HPP