--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/calc/UnaryNode.java	2017-02-15 17:07:08.433936810 -0800
@@ -0,0 +1,74 @@
+/*
+ * 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 org.graalvm.compiler.nodes.calc;
+
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
+
+import org.graalvm.compiler.core.common.type.Stamp;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.spi.Canonicalizable;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.ValueNode;
+
+/**
+ * The {@code UnaryNode} class is the base of arithmetic and bit logic operations with exactly one
+ * input.
+ */
+@NodeInfo(size = SIZE_1)
+public abstract class UnaryNode extends FloatingNode implements Canonicalizable.Unary<ValueNode> {
+
+    public static final NodeClass<UnaryNode> TYPE = NodeClass.create(UnaryNode.class);
+    @Input protected ValueNode value;
+
+    @Override
+    public ValueNode getValue() {
+        return value;
+    }
+
+    /**
+     * Creates a new UnaryNode instance.
+     *
+     * @param stamp the result type of this instruction
+     * @param value the input instruction
+     */
+    protected UnaryNode(NodeClass<? extends UnaryNode> c, Stamp stamp, ValueNode value) {
+        super(c, stamp);
+        this.value = value;
+    }
+
+    @Override
+    public boolean inferStamp() {
+        return updateStamp(foldStamp(value.stamp()));
+    }
+
+    /**
+     * Compute an improved for this node using the passed in stamp. The stamp must be compatible
+     * with the current value of {@link #value}. This code is used to provide the default
+     * implementation of {@link #inferStamp()} and may be used by external optimizations.
+     *
+     * @param newStamp
+     */
+    public Stamp foldStamp(Stamp newStamp) {
+        return stamp();
+    }
+}