--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/NullConstant.java	Mon Apr 07 16:09:17 2014 -0700
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2014, 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.graal.api.meta;
+
+/**
+ * The implementation type of the {@link Constant#NULL_OBJECT null constant}.
+ */
+final class NullConstant extends Constant {
+
+    private static final long serialVersionUID = 8906209595800783961L;
+
+    protected NullConstant() {
+        super(Kind.Object);
+    }
+
+    @Override
+    public boolean isNull() {
+        return true;
+    }
+
+    @Override
+    public boolean isDefaultForKind() {
+        return true;
+    }
+
+    @Override
+    public Object asBoxedPrimitive() {
+        throw new IllegalArgumentException();
+    }
+
+    @Override
+    public int asInt() {
+        throw new IllegalArgumentException();
+    }
+
+    @Override
+    public boolean asBoolean() {
+        throw new IllegalArgumentException();
+    }
+
+    @Override
+    public long asLong() {
+        throw new IllegalArgumentException();
+    }
+
+    @Override
+    public float asFloat() {
+        throw new IllegalArgumentException();
+    }
+
+    @Override
+    public double asDouble() {
+        throw new IllegalArgumentException();
+    }
+
+    @Override
+    public String toValueString() {
+        return "null";
+    }
+
+    @Override
+    public int hashCode() {
+        return System.identityHashCode(this);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        assert o == this || !(o instanceof NullConstant) : "null constant is a singleton";
+        return o == this;
+    }
+}