--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotObjectConstant.java	Tue May 26 17:13:37 2015 +0200
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2009, 2015, 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.
+ */
+package com.oracle.jvmci.hotspot;
+
+import java.lang.invoke.*;
+import java.util.*;
+
+import com.oracle.graal.api.meta.*;
+
+/**
+ * Represents a constant non-{@code null} object reference, within the compiler and across the
+ * compiler/runtime interface.
+ */
+public interface HotSpotObjectConstant extends JavaConstant, HotSpotConstant, VMConstant {
+
+    JavaConstant compress();
+
+    JavaConstant uncompress();
+
+    /**
+     * Gets the resolved Java type of the object represented by this constant.
+     */
+    HotSpotResolvedObjectType getType();
+
+    /**
+     * Gets the result of {@link Class#getClassLoader()} for the {@link Class} object represented by
+     * this constant.
+     *
+     * @return {@code null} if this constant does not represent a {@link Class} object
+     */
+    JavaConstant getClassLoader();
+
+    /**
+     * Gets the {@linkplain System#identityHashCode(Object) identity} has code for the object
+     * represented by this constant.
+     */
+    int getIdentityHashCode();
+
+    /**
+     * Gets the result of {@link Class#getComponentType()} for the {@link Class} object represented
+     * by this constant.
+     *
+     * @return {@code null} if this constant does not represent a {@link Class} object
+     */
+    JavaConstant getComponentType();
+
+    /**
+     * Gets the result of {@link Class#getSuperclass()} for the {@link Class} object represented by
+     * this constant.
+     *
+     * @return {@code null} if this constant does not represent a {@link Class} object
+     */
+    JavaConstant getSuperclass();
+
+    /**
+     * Gets the result of {@link CallSite#getTarget()} for the {@link CallSite} object represented
+     * by this constant.
+     *
+     * @param assumptions used to register an assumption that the {@link CallSite}'s target does not
+     *            change
+     * @return {@code null} if this constant does not represent a {@link CallSite} object
+     */
+    JavaConstant getCallSiteTarget(Assumptions assumptions);
+
+    /**
+     * Determines if this constant represents an {@linkplain String#intern() interned} string.
+     */
+    boolean isInternedString();
+
+    /**
+     * Gets the object represented by this constant represents if it is of a given type.
+     *
+     * @param type the expected type of the object represented by this constant. If the object is
+     *            required to be of this type, then wrap the call to this method in
+     *            {@link Objects#requireNonNull(Object)}.
+     * @return the object value represented by this constant if it is an
+     *         {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise
+     *         {@code null}
+     */
+    <T> T asObject(Class<T> type);
+
+    /**
+     * Gets the object represented by this constant represents if it is of a given type.
+     *
+     * @param type the expected type of the object represented by this constant. If the object is
+     *            required to be of this type, then wrap the call to this method in
+     *            {@link Objects#requireNonNull(Object)}.
+     * @return the object value represented by this constant if it is an
+     *         {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise
+     *         {@code null}
+     */
+    Object asObject(ResolvedJavaType type);
+}