--- /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/spi/NodeValueMap.java	2017-02-15 17:07:54.560956213 -0800
@@ -0,0 +1,62 @@
+/*
+ * 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.spi;
+
+import org.graalvm.compiler.graph.Node;
+import org.graalvm.compiler.nodes.ValueNode;
+
+import jdk.vm.ci.meta.Value;
+
+public interface NodeValueMap {
+
+    /**
+     * Returns the operand that has been previously initialized by
+     * {@link #setResult(ValueNode, Value)} with the result of an instruction. It's a code
+     * generation error to ask for the operand of ValueNode that doesn't have one yet.
+     *
+     * @param node A node that produces a result value.
+     */
+    Value operand(Node node);
+
+    /**
+     * @return {@code true} if there is an {@link Value operand} associated with the {@code node} in
+     *         the current block.
+     */
+    boolean hasOperand(Node node);
+
+    /**
+     * Associates {@code operand} with the {@code node} in the current block.
+     *
+     * @return {@code operand}
+     */
+    Value setResult(ValueNode node, Value operand);
+
+    /**
+     * Gets the the {@link ValueNode} that produced a {@code value}. If the {@code value} is not
+     * associated with a {@link ValueNode} {@code null} is returned.
+     *
+     * This method is intended for debugging purposes only.
+     */
+    ValueNode valueForOperand(Value value);
+}