--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/ci/ciMetadata.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 1999, 2012, 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_CI_CIMETADATA_HPP
+#define SHARE_VM_CI_CIMETADATA_HPP
+
+#include "ci/ciBaseObject.hpp"
+#include "ci/ciClassList.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/handles.hpp"
+#include "runtime/jniHandles.hpp"
+
+// ciMetadata
+//
+// Compiler interface to metadata object in the VM, not Java object.
+
+class ciMetadata: public ciBaseObject {
+  CI_PACKAGE_ACCESS
+  friend class ciEnv;
+
+ protected:
+  Metadata* _metadata;
+
+  ciMetadata(): _metadata(NULL) {}
+  ciMetadata(Metadata* o): _metadata(o) {}
+
+  virtual bool is_classless() const         { return false; }
+ public:
+  bool is_loaded() const { return _metadata != NULL || is_classless(); }
+
+  virtual bool is_metadata() const          { return true; }
+
+  virtual bool is_type() const              { return false; }
+  virtual bool is_cpcache() const           { return false; }
+  virtual bool is_return_address() const    { return false; }
+  virtual bool is_method() const            { return false; }
+  virtual bool is_method_data() const       { return false; }
+  virtual bool is_klass() const             { return false; }
+  virtual bool is_instance_klass() const    { return false; }
+  virtual bool is_array_klass() const       { return false; }
+  virtual bool is_obj_array_klass() const   { return false; }
+  virtual bool is_type_array_klass() const  { return false; }
+  virtual void dump_replay_data(outputStream* st) { /* do nothing */ }
+
+  ciMethod*                as_method() {
+    assert(is_method(), "bad cast");
+    return (ciMethod*)this;
+  }
+  ciMethodData*            as_method_data() {
+    assert(is_method_data(), "bad cast");
+    return (ciMethodData*)this;
+  }
+  ciSymbol*                as_symbol() {
+    assert(is_symbol(), "bad cast");
+    return (ciSymbol*)this;
+  }
+  ciType*                  as_type() {
+    assert(is_type(), "bad cast");
+    return (ciType*)this;
+  }
+  ciReturnAddress*         as_return_address() {
+    assert(is_return_address(), "bad cast");
+    return (ciReturnAddress*)this;
+  }
+  ciKlass*                 as_klass() {
+    assert(is_klass(), "bad cast");
+    return (ciKlass*)this;
+  }
+  ciInstanceKlass*         as_instance_klass() {
+    assert(is_instance_klass(), "bad cast");
+    return (ciInstanceKlass*)this;
+  }
+  ciArrayKlass*            as_array_klass() {
+    assert(is_array_klass(), "bad cast");
+    return (ciArrayKlass*)this;
+  }
+  ciObjArrayKlass*         as_obj_array_klass() {
+    assert(is_obj_array_klass(), "bad cast");
+    return (ciObjArrayKlass*)this;
+  }
+  ciTypeArrayKlass*        as_type_array_klass() {
+    assert(is_type_array_klass(), "bad cast");
+    return (ciTypeArrayKlass*)this;
+  }
+
+  Metadata* constant_encoding() { return _metadata; }
+
+  bool equals(ciMetadata* obj) const { return (this == obj); }
+
+  int hash() { return ident() * 31; } // ???
+
+  void print(outputStream* st);
+  virtual void print_impl(outputStream* st) {}
+  virtual const char* type_string() { return "ciMetadata"; }
+
+  void print()  { print(tty); }
+  void print_metadata(outputStream* st = tty);
+
+};
+#endif // SHARE_VM_CI_CIMETADATA_HPP