--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/SerialWriteBarrier.java	Thu Jun 20 13:47:53 2013 +0200
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/SerialWriteBarrier.java	Thu Jun 20 15:10:44 2013 +0200
@@ -22,39 +22,11 @@
  */
 package com.oracle.graal.nodes;
 
-import com.oracle.graal.graph.*;
 import com.oracle.graal.nodes.extended.*;
-import com.oracle.graal.nodes.spi.*;
-import com.oracle.graal.nodes.type.*;
-
-public final class SerialWriteBarrier extends FixedWithNextNode implements Lowerable, Node.IterableNodeType {
-
-    @Input private ValueNode object;
-    @Input private LocationNode location;
-    private final boolean precise;
 
-    public ValueNode getObject() {
-        return object;
-    }
-
-    public LocationNode getLocation() {
-        return location;
-    }
-
-    public boolean usePrecise() {
-        return precise;
-    }
+public class SerialWriteBarrier extends WriteBarrier {
 
     public SerialWriteBarrier(ValueNode object, LocationNode location, boolean precise) {
-        super(StampFactory.forVoid());
-        this.object = object;
-        this.location = location;
-        this.precise = precise;
-    }
-
-    @Override
-    public void lower(LoweringTool generator, LoweringType loweringType) {
-        assert loweringType == LoweringType.AFTER_GUARDS;
-        generator.getRuntime().lower(this, generator);
+        super(object, location, precise);
     }
 }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/WriteBarrier.java	Thu Jun 20 15:10:44 2013 +0200
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2013, 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 com.oracle.graal.nodes;
+
+import com.oracle.graal.graph.*;
+import com.oracle.graal.nodes.extended.*;
+import com.oracle.graal.nodes.spi.*;
+import com.oracle.graal.nodes.type.*;
+
+public class WriteBarrier extends FixedWithNextNode implements Lowerable, Node.IterableNodeType {
+
+    @Input private ValueNode object;
+    @Input private LocationNode location;
+    private final boolean precise;
+
+    public ValueNode getObject() {
+        return object;
+    }
+
+    public LocationNode getLocation() {
+        return location;
+    }
+
+    public boolean usePrecise() {
+        return precise;
+    }
+
+    public WriteBarrier(ValueNode object, LocationNode location, boolean precise) {
+        super(StampFactory.forVoid());
+        this.object = object;
+        this.location = location;
+        this.precise = precise;
+    }
+
+    @Override
+    public void lower(LoweringTool generator, LoweringType loweringType) {
+        assert loweringType == LoweringType.AFTER_GUARDS;
+        generator.getRuntime().lower(this, generator);
+    }
+}