--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/AtomicReadAndAddNode.java	Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+package org.graalvm.compiler.nodes.java;
+
+import static org.graalvm.compiler.nodeinfo.InputType.Association;
+import static org.graalvm.compiler.nodeinfo.InputType.Memory;
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_10;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_3;
+
+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.ValueNode;
+import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint;
+import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
+import org.graalvm.compiler.nodes.memory.address.AddressNode;
+import org.graalvm.compiler.nodes.spi.LIRLowerable;
+import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
+
+import jdk.vm.ci.meta.Value;
+import sun.misc.Unsafe;
+
+/**
+ * Represents an atomic read-and-add operation like {@link Unsafe#getAndAddInt(Object, long, int)}.
+ */
+@NodeInfo(allowedUsageTypes = Memory, cycles = CYCLES_10, size = SIZE_3)
+public final class AtomicReadAndAddNode extends AbstractMemoryCheckpoint implements LIRLowerable, MemoryCheckpoint.Single {
+
+    public static final NodeClass<AtomicReadAndAddNode> TYPE = NodeClass.create(AtomicReadAndAddNode.class);
+    @Input(Association) AddressNode address;
+    @Input ValueNode delta;
+
+    protected final LocationIdentity locationIdentity;
+
+    public AtomicReadAndAddNode(AddressNode address, ValueNode delta, LocationIdentity locationIdentity) {
+        super(TYPE, StampFactory.forKind(delta.getStackKind()));
+        this.address = address;
+        this.delta = delta;
+        this.locationIdentity = locationIdentity;
+    }
+
+    public ValueNode delta() {
+        return delta;
+    }
+
+    @Override
+    public LocationIdentity getLocationIdentity() {
+        return locationIdentity;
+    }
+
+    @Override
+    public void generate(NodeLIRBuilderTool gen) {
+        Value result = gen.getLIRGeneratorTool().emitAtomicReadAndAdd(gen.operand(address), gen.operand(delta));
+        gen.setResult(this, result);
+    }
+}