--- /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/nodes/G1PostWriteBarrier.java	2016-12-09 00:49:33.685505687 -0800
@@ -0,0 +1,51 @@
+/*
+ * 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.hotspot.nodes;
+
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_50;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_50;
+
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.memory.address.AddressNode;
+
+@NodeInfo(cycles = CYCLES_50, size = SIZE_50)
+public class G1PostWriteBarrier extends ObjectWriteBarrier {
+
+    public static final NodeClass<G1PostWriteBarrier> TYPE = NodeClass.create(G1PostWriteBarrier.class);
+    protected final boolean alwaysNull;
+
+    public G1PostWriteBarrier(AddressNode address, ValueNode value, boolean precise, boolean alwaysNull) {
+        this(TYPE, address, value, precise, alwaysNull);
+    }
+
+    protected G1PostWriteBarrier(NodeClass<? extends G1PostWriteBarrier> c, AddressNode address, ValueNode value, boolean precise, boolean alwaysNull) {
+        super(c, address, value, precise);
+        this.alwaysNull = alwaysNull;
+    }
+
+    public boolean alwaysNull() {
+        return alwaysNull;
+    }
+}