--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/Variable.java	2016-12-09 00:54:03.842414268 -0800
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2010, 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 org.graalvm.compiler.lir;
+
+import jdk.vm.ci.code.RegisterValue;
+import jdk.vm.ci.code.StackSlot;
+import jdk.vm.ci.meta.AllocatableValue;
+import jdk.vm.ci.meta.ValueKind;
+
+/**
+ * Represents a value that is yet to be bound to a machine location (such as a {@link RegisterValue}
+ * or {@link StackSlot}) by a register allocator.
+ */
+public final class Variable extends AllocatableValue {
+
+    /**
+     * The identifier of the variable. This is a non-zero index in a contiguous 0-based name space.
+     */
+    public final int index;
+
+    private String name;
+
+    /**
+     * Creates a new variable.
+     *
+     * @param kind
+     * @param index
+     */
+    public Variable(ValueKind<?> kind, int index) {
+        super(kind);
+        assert index >= 0;
+        this.index = index;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public String toString() {
+        if (name != null) {
+            return name;
+        } else {
+            return "v" + index + getKindSuffix();
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        return 71 * super.hashCode() + index;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof Variable) {
+            Variable other = (Variable) obj;
+            return super.equals(other) && index == other.index;
+        }
+        return false;
+    }
+}