--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.word/src/org/graalvm/compiler/word/Unsigned.java	2016-12-09 00:57:30.901541142 -0800
@@ -0,0 +1,337 @@
+/*
+ * Copyright (c) 2012, 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 org.graalvm.compiler.word;
+
+public interface Unsigned extends ComparableWord {
+
+    /**
+     * Returns a Unsigned whose value is {@code (this + val)}.
+     *
+     * @param val value to be added to this Unsigned.
+     * @return {@code this + val}
+     */
+    Unsigned add(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this - val)}.
+     *
+     * @param val value to be subtracted from this Unsigned.
+     * @return {@code this - val}
+     */
+    Unsigned subtract(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this * val)}.
+     *
+     * @param val value to be multiplied by this Unsigned.
+     * @return {@code this * val}
+     */
+    Unsigned multiply(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this / val)}.
+     *
+     * @param val value by which this Unsigned is to be divided.
+     * @return {@code this / val}
+     */
+    Unsigned unsignedDivide(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this % val)}.
+     *
+     * @param val value by which this Unsigned is to be divided, and the remainder computed.
+     * @return {@code this % val}
+     */
+    Unsigned unsignedRemainder(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this << n)}.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this << n}
+     */
+    Unsigned shiftLeft(Unsigned n);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this >>> n)}. No sign extension is performed.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this >> n}
+     */
+    Unsigned unsignedShiftRight(Unsigned n);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this & val)}.
+     *
+     * @param val value to be AND'ed with this Unsigned.
+     * @return {@code this & val}
+     */
+    Unsigned and(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this | val)}.
+     *
+     * @param val value to be OR'ed with this Unsigned.
+     * @return {@code this | val}
+     */
+    Unsigned or(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this ^ val)}.
+     *
+     * @param val value to be XOR'ed with this Unsigned.
+     * @return {@code this ^ val}
+     */
+    Unsigned xor(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (~this)}.
+     *
+     * @return {@code ~this}
+     */
+    Unsigned not();
+
+    /**
+     * Compares this Unsigned with the specified value.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this == val}
+     */
+    boolean equal(Unsigned val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this != val}
+     */
+    boolean notEqual(Unsigned val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this < val}
+     */
+    boolean belowThan(Unsigned val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this <= val}
+     */
+    boolean belowOrEqual(Unsigned val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this > val}
+     */
+    boolean aboveThan(Unsigned val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this >= val}
+     */
+    boolean aboveOrEqual(Unsigned val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this + val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to be added to this Unsigned.
+     * @return {@code this + val}
+     */
+    Unsigned add(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this - val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to be subtracted from this Unsigned.
+     * @return {@code this - val}
+     */
+    Unsigned subtract(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this * val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to be multiplied by this Unsigned.
+     * @return {@code this * val}
+     */
+    Unsigned multiply(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this / val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value by which this Unsigned is to be divided.
+     * @return {@code this / val}
+     */
+    Unsigned unsignedDivide(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this % val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value by which this Unsigned is to be divided, and the remainder computed.
+     * @return {@code this % val}
+     */
+    Unsigned unsignedRemainder(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this << n)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this << n}
+     */
+    Unsigned shiftLeft(int n);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this >>> n)}. No sign extension is performed.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this >> n}
+     */
+    Unsigned unsignedShiftRight(int n);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this & val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to be AND'ed with this Unsigned.
+     * @return {@code this & val}
+     */
+    Unsigned and(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this | val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to be OR'ed with this Unsigned.
+     * @return {@code this | val}
+     */
+    Unsigned or(int val);
+
+    /**
+     * Returns a Unsigned whose value is {@code (this ^ val)}.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to be XOR'ed with this Unsigned.
+     * @return {@code this ^ val}
+     */
+    Unsigned xor(int val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this == val}
+     */
+    boolean equal(int val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this != val}
+     */
+    boolean notEqual(int val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this < val}
+     */
+    boolean belowThan(int val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this <= val}
+     */
+    boolean belowOrEqual(int val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this > val}
+     */
+    boolean aboveThan(int val);
+
+    /**
+     * Compares this Unsigned with the specified value.
+     * <p>
+     * Note that the right operand is a signed value, while the operation is performed unsigned.
+     * Therefore, the result is only well-defined for positive right operands.
+     *
+     * @param val value to which this Unsigned is to be compared.
+     * @return {@code this >= val}
+     */
+    boolean aboveOrEqual(int val);
+}