--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/arraycopy/CheckcastArrayCopyCallNode.java	2016-12-09 00:50:00.101670143 -0800
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+//JaCoCo Exclude
+package org.graalvm.compiler.hotspot.replacements.arraycopy;
+
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN;
+import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider.getArrayBaseOffset;
+import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider.getArrayIndexScale;
+
+import org.graalvm.compiler.core.common.LocationIdentity;
+import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;
+import org.graalvm.compiler.hotspot.meta.HotSpotHostForeignCallsProvider;
+import org.graalvm.compiler.hotspot.nodes.GetObjectAddressNode;
+import org.graalvm.compiler.nodeinfo.InputType;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.ConstantNode;
+import org.graalvm.compiler.nodes.FixedWithNextNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.calc.AddNode;
+import org.graalvm.compiler.nodes.calc.IntegerConvertNode;
+import org.graalvm.compiler.nodes.calc.LeftShiftNode;
+import org.graalvm.compiler.nodes.extended.ForeignCallNode;
+import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint;
+import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
+import org.graalvm.compiler.nodes.memory.address.OffsetAddressNode;
+import org.graalvm.compiler.nodes.spi.Lowerable;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+import org.graalvm.compiler.word.Word;
+
+import jdk.vm.ci.code.CodeUtil;
+import jdk.vm.ci.meta.JavaKind;
+
+@NodeInfo(allowedUsageTypes = {InputType.Memory, InputType.Value}, cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN)
+public final class CheckcastArrayCopyCallNode extends AbstractMemoryCheckpoint implements Lowerable, MemoryCheckpoint.Single {
+
+    public static final NodeClass<CheckcastArrayCopyCallNode> TYPE = NodeClass.create(CheckcastArrayCopyCallNode.class);
+    @Input ValueNode src;
+    @Input ValueNode srcPos;
+    @Input ValueNode dest;
+    @Input ValueNode destPos;
+    @Input ValueNode length;
+    @Input ValueNode destElemKlass;
+    @Input ValueNode superCheckOffset;
+
+    protected final boolean uninit;
+
+    protected final HotSpotGraalRuntimeProvider runtime;
+
+    protected CheckcastArrayCopyCallNode(@InjectedNodeParameter HotSpotGraalRuntimeProvider runtime, ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length,
+                    ValueNode superCheckOffset, ValueNode destElemKlass, boolean uninit) {
+        super(TYPE, StampFactory.forKind(JavaKind.Int));
+        this.src = src;
+        this.srcPos = srcPos;
+        this.dest = dest;
+        this.destPos = destPos;
+        this.length = length;
+        this.superCheckOffset = superCheckOffset;
+        this.destElemKlass = destElemKlass;
+        this.uninit = uninit;
+        this.runtime = runtime;
+    }
+
+    public ValueNode getSource() {
+        return src;
+    }
+
+    public ValueNode getSourcePosition() {
+        return srcPos;
+    }
+
+    public ValueNode getDestination() {
+        return dest;
+    }
+
+    public ValueNode getDestinationPosition() {
+        return destPos;
+    }
+
+    public ValueNode getLength() {
+        return length;
+    }
+
+    public boolean isUninit() {
+        return uninit;
+    }
+
+    private ValueNode computeBase(ValueNode base, ValueNode pos) {
+        FixedWithNextNode basePtr = graph().add(new GetObjectAddressNode(base));
+        graph().addBeforeFixed(this, basePtr);
+
+        int shift = CodeUtil.log2(getArrayIndexScale(JavaKind.Object));
+        ValueNode scaledIndex = graph().unique(new LeftShiftNode(pos, ConstantNode.forInt(shift, graph())));
+        ValueNode offset = graph().unique(new AddNode(scaledIndex, ConstantNode.forInt(getArrayBaseOffset(JavaKind.Object), graph())));
+        return graph().unique(new OffsetAddressNode(basePtr, offset));
+    }
+
+    @Override
+    public void lower(LoweringTool tool) {
+        if (graph().getGuardsStage().areFrameStatesAtDeopts()) {
+            ForeignCallDescriptor desc = HotSpotHostForeignCallsProvider.lookupCheckcastArraycopyDescriptor(isUninit());
+            StructuredGraph graph = graph();
+            ValueNode srcAddr = computeBase(getSource(), getSourcePosition());
+            ValueNode destAddr = computeBase(getDestination(), getDestinationPosition());
+            ValueNode len = getLength();
+            if (len.stamp().getStackKind() != runtime.getTarget().wordJavaKind) {
+                len = IntegerConvertNode.convert(len, StampFactory.forKind(runtime.getTarget().wordJavaKind), graph());
+            }
+            ForeignCallNode call = graph.add(new ForeignCallNode(runtime.getHostBackend().getForeignCalls(), desc, srcAddr, destAddr, len, superCheckOffset, destElemKlass));
+            call.setStateAfter(stateAfter());
+            graph.replaceFixedWithFixed(this, call);
+        }
+    }
+
+    @Override
+    public LocationIdentity getLocationIdentity() {
+        /*
+         * Because of restrictions that the memory graph of snippets matches the original node,
+         * pretend that we kill any.
+         */
+        return LocationIdentity.any();
+    }
+
+    @NodeIntrinsic
+    public static native int checkcastArraycopy(Object src, int srcPos, Object dest, int destPos, int length, Word superCheckOffset, Object destElemKlass, @ConstantNodeParameter boolean uninit);
+}