--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/RegisterValue.java	Wed May 27 00:36:16 2015 +0200
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2009, 2014, 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.code;
+
+import com.oracle.jvmci.meta.*;
+
+/**
+ * Denotes a register that stores a value of a fixed kind. There is exactly one (canonical) instance
+ * of {@link RegisterValue} for each ({@link Register}, {@link Kind}) pair. Use
+ * {@link Register#asValue(LIRKind)} to retrieve the canonical {@link RegisterValue} instance for a
+ * given (register,kind) pair.
+ */
+public final class RegisterValue extends AllocatableValue {
+
+    private final Register reg;
+
+    /**
+     * Should only be called from {@link Register#Register} to ensure canonicalization.
+     */
+    protected RegisterValue(LIRKind kind, Register register) {
+        super(kind);
+        this.reg = register;
+    }
+
+    @Override
+    public String toString() {
+        return getRegister().name + getKindSuffix();
+    }
+
+    /**
+     * @return the register that contains the value
+     */
+    public Register getRegister() {
+        return reg;
+    }
+
+    @Override
+    public int hashCode() {
+        return 29 * super.hashCode() + reg.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof RegisterValue) {
+            RegisterValue other = (RegisterValue) obj;
+            return super.equals(obj) && reg.equals(other.reg);
+        }
+        return false;
+    }
+}