--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/utils/ValueMap.java	Mon Jul 13 15:18:06 2015 +0200
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2015, 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.graal.lir.utils;
+
+import jdk.internal.jvmci.meta.*;
+
+/**
+ * A map interface to map {@link Value}s to other objects.
+ */
+public abstract class ValueMap<K extends Value, T> {
+
+    /**
+     * Gets the object associated with {@code value} or {@code null} if there is no such mapping.
+     */
+    public abstract T get(K value);
+
+    /**
+     * Removes the object associated with {@code value} from the map.
+     */
+    public abstract void remove(K value);
+
+    /**
+     * Associates {@code object} with {@code value}.
+     */
+    public abstract void put(K value, T object);
+}