--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.cri/src/com/sun/cri/ci/CiRegisterValue.java	Sat Dec 17 19:59:18 2011 +0100
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2009, 2011, 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.sun.cri.ci;
+
+/**
+ * Denotes a register that stores a value of a fixed kind. There is exactly one (canonical) instance of {@code
+ * CiRegisterValue} for each ({@link CiRegister}, {@link CiKind}) pair. Use {@link CiRegister#asValue(CiKind)} to
+ * retrieve the canonical {@link CiRegisterValue} instance for a given (register,kind) pair.
+ */
+public final class CiRegisterValue extends CiValue {
+
+    /**
+     * The register.
+     */
+    public final CiRegister reg;
+
+    /**
+     * Should only be called from {@link CiRegister#CiRegister} to ensure canonicalization.
+     */
+    CiRegisterValue(CiKind kind, CiRegister register) {
+        super(kind);
+        this.reg = register;
+    }
+
+    @Override
+    public int hashCode() {
+        return kind.ordinal() ^ reg.number;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        return o == this;
+    }
+
+    @Override
+    public boolean equalsIgnoringKind(CiValue other) {
+        if (other instanceof CiRegisterValue) {
+            return ((CiRegisterValue) other).reg == reg;
+        }
+        return false;
+    }
+
+    @Override
+    public String name() {
+        return reg.name;
+    }
+
+    @Override
+    public CiRegister asRegister() {
+        return reg;
+    }
+}