--- /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/extended/BoxNode.java	2017-02-15 17:07:17.787346263 -0800
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2013, 2015, 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.extended;
+
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_100;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_50;
+
+import java.util.Collections;
+
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.core.common.type.TypeReference;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.spi.Canonicalizable;
+import org.graalvm.compiler.graph.spi.CanonicalizerTool;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.FixedWithNextNode;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.java.MonitorIdNode;
+import org.graalvm.compiler.nodes.spi.Lowerable;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+import org.graalvm.compiler.nodes.spi.VirtualizableAllocation;
+import org.graalvm.compiler.nodes.spi.VirtualizerTool;
+import org.graalvm.compiler.nodes.type.StampTool;
+import org.graalvm.compiler.nodes.virtual.VirtualBoxingNode;
+
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.ResolvedJavaType;
+
+/**
+ * This node represents the boxing of a primitive value. This corresponds to a call to the valueOf
+ * methods in Integer, Long, etc.
+ */
+@NodeInfo(cycles = CYCLES_100, size = SIZE_50)
+public class BoxNode extends FixedWithNextNode implements VirtualizableAllocation, Lowerable, Canonicalizable.Unary<ValueNode> {
+
+    public static final NodeClass<BoxNode> TYPE = NodeClass.create(BoxNode.class);
+    @Input private ValueNode value;
+    protected final JavaKind boxingKind;
+
+    public BoxNode(ValueNode value, ResolvedJavaType resultType, JavaKind boxingKind) {
+        this(TYPE, value, resultType, boxingKind);
+    }
+
+    public BoxNode(NodeClass<? extends BoxNode> c, ValueNode value, ResolvedJavaType resultType, JavaKind boxingKind) {
+        super(c, StampFactory.objectNonNull(TypeReference.createExactTrusted(resultType)));
+        this.value = value;
+        this.boxingKind = boxingKind;
+    }
+
+    public JavaKind getBoxingKind() {
+        return boxingKind;
+    }
+
+    @Override
+    public ValueNode getValue() {
+        return value;
+    }
+
+    @Override
+    public void lower(LoweringTool tool) {
+        tool.getLowerer().lower(this, tool);
+    }
+
+    @Override
+    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
+        if (tool.allUsagesAvailable() && hasNoUsages()) {
+            return null;
+        }
+        return this;
+    }
+
+    protected VirtualBoxingNode createVirtualBoxingNode() {
+        return new VirtualBoxingNode(StampTool.typeOrNull(stamp()), boxingKind);
+    }
+
+    @Override
+    public void virtualize(VirtualizerTool tool) {
+        ValueNode alias = tool.getAlias(getValue());
+
+        VirtualBoxingNode newVirtual = createVirtualBoxingNode();
+        assert newVirtual.getFields().length == 1;
+
+        tool.createVirtualObject(newVirtual, new ValueNode[]{alias}, Collections.<MonitorIdNode> emptyList(), false);
+        tool.replaceWithVirtual(newVirtual);
+    }
+}