--- /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/UnsafeStoreNode.java	2017-02-15 17:07:26.820741731 -0800
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2011, 2016, 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.InputType.State;
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_3;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
+
+import org.graalvm.compiler.core.common.LocationIdentity;
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.ConstantNode;
+import org.graalvm.compiler.nodes.FrameState;
+import org.graalvm.compiler.nodes.StateSplit;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.java.StoreFieldNode;
+import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
+import org.graalvm.compiler.nodes.spi.Lowerable;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+import org.graalvm.compiler.nodes.spi.Virtualizable;
+import org.graalvm.compiler.nodes.spi.VirtualizerTool;
+import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
+
+import jdk.vm.ci.meta.Assumptions;
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.ResolvedJavaField;
+
+/**
+ * Store of a value at a location specified as an offset relative to an object. No null check is
+ * performed before the store.
+ */
+@NodeInfo(cycles = CYCLES_3, size = SIZE_1)
+public final class UnsafeStoreNode extends UnsafeAccessNode implements StateSplit, Lowerable, Virtualizable, MemoryCheckpoint.Single {
+
+    public static final NodeClass<UnsafeStoreNode> TYPE = NodeClass.create(UnsafeStoreNode.class);
+    @Input ValueNode value;
+    @OptionalInput(State) FrameState stateAfter;
+
+    public UnsafeStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity) {
+        this(object, offset, value, accessKind, locationIdentity, null);
+    }
+
+    public UnsafeStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity, FrameState stateAfter) {
+        super(TYPE, StampFactory.forVoid(), object, offset, accessKind, locationIdentity);
+        this.value = value;
+        this.stateAfter = stateAfter;
+        assert accessKind != JavaKind.Void && accessKind != JavaKind.Illegal;
+    }
+
+    @Override
+    public FrameState stateAfter() {
+        return stateAfter;
+    }
+
+    @Override
+    public void setStateAfter(FrameState x) {
+        assert x == null || x.isAlive() : "frame state must be in a graph";
+        updateUsages(stateAfter, x);
+        stateAfter = x;
+    }
+
+    @Override
+    public boolean hasSideEffect() {
+        return true;
+    }
+
+    public ValueNode value() {
+        return value;
+    }
+
+    @Override
+    public void lower(LoweringTool tool) {
+        tool.getLowerer().lower(this, tool);
+    }
+
+    @Override
+    public void virtualize(VirtualizerTool tool) {
+        ValueNode alias = tool.getAlias(object());
+        if (alias instanceof VirtualObjectNode) {
+            VirtualObjectNode virtual = (VirtualObjectNode) alias;
+            ValueNode indexValue = tool.getAlias(offset());
+            if (indexValue.isConstant()) {
+                long off = indexValue.asJavaConstant().asLong();
+                int entryIndex = virtual.entryIndexForOffset(off, accessKind());
+                if (entryIndex != -1) {
+                    JavaKind entryKind = virtual.entryKind(entryIndex);
+                    ValueNode entry = tool.getEntry(virtual, entryIndex);
+                    if (entry.getStackKind() == value.getStackKind() || entryKind == accessKind()) {
+                        tool.setVirtualEntry(virtual, entryIndex, value(), true);
+                        tool.delete();
+                    } else {
+                        if ((accessKind() == JavaKind.Long || accessKind() == JavaKind.Double) && entryKind == JavaKind.Int) {
+                            int nextIndex = virtual.entryIndexForOffset(off + 4, entryKind);
+                            if (nextIndex != -1) {
+                                JavaKind nextKind = virtual.entryKind(nextIndex);
+                                if (nextKind == JavaKind.Int) {
+                                    tool.setVirtualEntry(virtual, entryIndex, value(), true);
+                                    tool.setVirtualEntry(virtual, nextIndex, ConstantNode.forConstant(JavaConstant.forIllegal(), tool.getMetaAccessProvider(), graph()), true);
+                                    tool.delete();
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    protected ValueNode cloneAsFieldAccess(Assumptions assumptions, ResolvedJavaField field) {
+        return new StoreFieldNode(object(), field, value(), stateAfter());
+    }
+
+    @Override
+    protected ValueNode cloneAsArrayAccess(ValueNode location, LocationIdentity identity) {
+        return new UnsafeStoreNode(object(), location, value, accessKind(), identity, stateAfter());
+    }
+
+    public FrameState getState() {
+        return stateAfter;
+    }
+}