--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/RiValue.java	Thu Jun 07 18:24:06 2012 +0200
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2009, 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.
+ */
+package com.oracle.graal.api.meta;
+
+import java.io.*;
+
+/**
+ * Abstract base class for values manipulated by the compiler. All values have a {@linkplain RiKind kind} and are immutable.
+ */
+public abstract class RiValue implements Serializable {
+    private static final long serialVersionUID = -6909397188697766469L;
+
+    @SuppressWarnings("serial")
+    public static RiValue IllegalValue = new RiValue(RiKind.Illegal) {
+        @Override
+        public String toString() {
+            return "-";
+        }
+    };
+
+    /**
+     * The kind of this value.
+     */
+    public final RiKind kind;
+
+    /**
+     * Initializes a new value of the specified kind.
+     * @param kind the kind
+     */
+    protected RiValue(RiKind kind) {
+        this.kind = kind;
+    }
+
+    /**
+     * String representation of the kind, which should be the end of all {@link #toString()} implementation of subclasses.
+     */
+    protected final String kindSuffix() {
+        return "|" + kind.typeChar;
+    }
+}