--- /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/Signed.java	2016-12-09 00:57:30.366517559 -0800
@@ -0,0 +1,296 @@
+/*
+ * 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 Signed extends ComparableWord {
+
+    /**
+     * Returns a Signed whose value is {@code (this + val)}.
+     *
+     * @param val value to be added to this Signed.
+     * @return {@code this + val}
+     */
+    Signed add(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this - val)}.
+     *
+     * @param val value to be subtracted from this Signed.
+     * @return {@code this - val}
+     */
+    Signed subtract(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this * val)}.
+     *
+     * @param val value to be multiplied by this Signed.
+     * @return {@code this * val}
+     */
+    Signed multiply(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this / val)}.
+     *
+     * @param val value by which this Signed is to be divided.
+     * @return {@code this / val}
+     */
+    Signed signedDivide(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this % val)}.
+     *
+     * @param val value by which this Signed is to be divided, and the remainder computed.
+     * @return {@code this % val}
+     */
+    Signed signedRemainder(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this << n)}.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this << n}
+     */
+    Signed shiftLeft(Unsigned n);
+
+    /**
+     * Returns a Signed whose value is {@code (this >> n)}. Sign extension is performed.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this >> n}
+     */
+    Signed signedShiftRight(Unsigned n);
+
+    /**
+     * Returns a Signed whose value is {@code (this & val)}. (This method returns a negative Signed
+     * if and only if this and val are both negative.)
+     *
+     * @param val value to be AND'ed with this Signed.
+     * @return {@code this & val}
+     */
+    Signed and(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this | val)}. (This method returns a negative Signed
+     * if and only if either this or val is negative.)
+     *
+     * @param val value to be OR'ed with this Signed.
+     * @return {@code this | val}
+     */
+    Signed or(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this ^ val)}. (This method returns a negative Signed
+     * if and only if exactly one of this and val are negative.)
+     *
+     * @param val value to be XOR'ed with this Signed.
+     * @return {@code this ^ val}
+     */
+    Signed xor(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (~this)}. (This method returns a negative value if and
+     * only if this Signed is non-negative.)
+     *
+     * @return {@code ~this}
+     */
+    Signed not();
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this == val}
+     */
+    boolean equal(Signed val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this != val}
+     */
+    boolean notEqual(Signed val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this < val}
+     */
+    boolean lessThan(Signed val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this <= val}
+     */
+    boolean lessOrEqual(Signed val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this > val}
+     */
+    boolean greaterThan(Signed val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this >= val}
+     */
+    boolean greaterOrEqual(Signed val);
+
+    /**
+     * Returns a Signed whose value is {@code (this + val)}.
+     *
+     * @param val value to be added to this Signed.
+     * @return {@code this + val}
+     */
+    Signed add(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this - val)}.
+     *
+     * @param val value to be subtracted from this Signed.
+     * @return {@code this - val}
+     */
+    Signed subtract(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this * val)}.
+     *
+     * @param val value to be multiplied by this Signed.
+     * @return {@code this * val}
+     */
+    Signed multiply(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this / val)}.
+     *
+     * @param val value by which this Signed is to be divided.
+     * @return {@code this / val}
+     */
+    Signed signedDivide(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this % val)}.
+     *
+     * @param val value by which this Signed is to be divided, and the remainder computed.
+     * @return {@code this % val}
+     */
+    Signed signedRemainder(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this << n)}.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this << n}
+     */
+    Signed shiftLeft(int n);
+
+    /**
+     * Returns a Signed whose value is {@code (this >> n)}. Sign extension is performed.
+     *
+     * @param n shift distance, in bits.
+     * @return {@code this >> n}
+     */
+    Signed signedShiftRight(int n);
+
+    /**
+     * Returns a Signed whose value is {@code (this & val)}. (This method returns a negative Signed
+     * if and only if this and val are both negative.)
+     *
+     * @param val value to be AND'ed with this Signed.
+     * @return {@code this & val}
+     */
+    Signed and(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this | val)}. (This method returns a negative Signed
+     * if and only if either this or val is negative.)
+     *
+     * @param val value to be OR'ed with this Signed.
+     * @return {@code this | val}
+     */
+    Signed or(int val);
+
+    /**
+     * Returns a Signed whose value is {@code (this ^ val)}. (This method returns a negative Signed
+     * if and only if exactly one of this and val are negative.)
+     *
+     * @param val value to be XOR'ed with this Signed.
+     * @return {@code this ^ val}
+     */
+    Signed xor(int val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this == val}
+     */
+    boolean equal(int val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this != val}
+     */
+    boolean notEqual(int val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this < val}
+     */
+    boolean lessThan(int val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this <= val}
+     */
+    boolean lessOrEqual(int val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this > val}
+     */
+    boolean greaterThan(int val);
+
+    /**
+     * Compares this Signed with the specified value.
+     *
+     * @param val value to which this Signed is to be compared.
+     * @return {@code this >= val}
+     */
+    boolean greaterOrEqual(int val);
+}