--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/arraycopy/UnsafeArrayCopyNode.java	2017-02-15 17:00:30.629623048 -0800
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2013, 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.hotspot.replacements.arraycopy;
+
+import static org.graalvm.compiler.core.common.LocationIdentity.any;
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_200;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_200;
+
+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.InputType;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.NamedLocationIdentity;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.extended.ArrayRangeWriteNode;
+import org.graalvm.compiler.nodes.memory.MemoryAccess;
+import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
+import org.graalvm.compiler.nodes.memory.MemoryNode;
+import org.graalvm.compiler.nodes.spi.Lowerable;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+import org.graalvm.compiler.replacements.SnippetTemplate.Arguments;
+
+import jdk.vm.ci.meta.JavaKind;
+
+@NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_200, size = SIZE_200)
+public final class UnsafeArrayCopyNode extends ArrayRangeWriteNode implements Lowerable, MemoryCheckpoint.Single, MemoryAccess {
+
+    public static final NodeClass<UnsafeArrayCopyNode> TYPE = NodeClass.create(UnsafeArrayCopyNode.class);
+    @Input ValueNode src;
+    @Input ValueNode srcPos;
+    @Input ValueNode dest;
+    @Input ValueNode destPos;
+    @Input ValueNode length;
+    @OptionalInput ValueNode layoutHelper;
+
+    @OptionalInput(InputType.Memory) MemoryNode lastLocationAccess;
+
+    protected JavaKind elementKind;
+
+    public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper, JavaKind elementKind) {
+        super(TYPE, StampFactory.forVoid());
+        assert layoutHelper == null || elementKind == null;
+        this.src = src;
+        this.srcPos = srcPos;
+        this.dest = dest;
+        this.destPos = destPos;
+        this.length = length;
+        this.layoutHelper = layoutHelper;
+        this.elementKind = elementKind;
+    }
+
+    public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, JavaKind elementKind) {
+        this(src, srcPos, dest, destPos, length, null, elementKind);
+    }
+
+    public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper) {
+        this(src, srcPos, dest, destPos, length, layoutHelper, null);
+    }
+
+    @Override
+    public ValueNode getArray() {
+        return dest;
+    }
+
+    @Override
+    public ValueNode getIndex() {
+        return destPos;
+    }
+
+    @Override
+    public ValueNode getLength() {
+        return length;
+    }
+
+    @Override
+    public boolean isObjectArray() {
+        return elementKind == JavaKind.Object;
+    }
+
+    @Override
+    public boolean isInitialization() {
+        return false;
+    }
+
+    public JavaKind getElementKind() {
+        return elementKind;
+    }
+
+    @Override
+    public void lower(LoweringTool tool) {
+        if (graph().getGuardsStage().areFrameStatesAtDeopts()) {
+            UnsafeArrayCopySnippets.Templates templates = tool.getReplacements().getSnippetTemplateCache(UnsafeArrayCopySnippets.Templates.class);
+            templates.lower(this, tool);
+        }
+    }
+
+    public void addSnippetArguments(Arguments args) {
+        args.add("src", src);
+        args.add("srcPos", srcPos);
+        args.add("dest", dest);
+        args.add("destPos", destPos);
+        args.add("length", length);
+        if (layoutHelper != null) {
+            args.add("layoutHelper", layoutHelper);
+        }
+    }
+
+    @Override
+    public LocationIdentity getLocationIdentity() {
+        if (elementKind != null) {
+            return NamedLocationIdentity.getArrayLocation(elementKind);
+        }
+        return any();
+    }
+
+    @Override
+    public MemoryNode getLastLocationAccess() {
+        return lastLocationAccess;
+    }
+
+    @Override
+    public void setLastLocationAccess(MemoryNode lla) {
+        updateUsagesInterface(lastLocationAccess, lla);
+        lastLocationAccess = lla;
+    }
+
+    @NodeIntrinsic
+    public static native void arraycopy(Object src, int srcPos, Object dest, int destPos, int length, @ConstantNodeParameter JavaKind elementKind);
+
+    @NodeIntrinsic
+    public static native void arraycopyPrimitive(Object src, int srcPos, Object dest, int destPos, int length, int layoutHelper);
+}