--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/nodes/ObjectWriteBarrier.java	Wed Mar 13 07:46:52 2019 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2013, 2018, 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 org.graalvm.compiler.graph.NodeClass;
-import org.graalvm.compiler.nodeinfo.InputType;
-import org.graalvm.compiler.nodeinfo.NodeInfo;
-import org.graalvm.compiler.nodes.ValueNode;
-import org.graalvm.compiler.nodes.memory.address.AddressNode;
-
-@NodeInfo
-public abstract class ObjectWriteBarrier extends WriteBarrier {
-
-    public static final NodeClass<ObjectWriteBarrier> TYPE = NodeClass.create(ObjectWriteBarrier.class);
-    @Input(InputType.Association) protected AddressNode address;
-    @OptionalInput protected ValueNode value;
-    protected final boolean precise;
-
-    protected ObjectWriteBarrier(NodeClass<? extends ObjectWriteBarrier> c, AddressNode address, ValueNode value, boolean precise) {
-        super(c);
-        this.address = address;
-        this.value = value;
-        this.precise = precise;
-    }
-
-    public ValueNode getValue() {
-        return value;
-    }
-
-    public AddressNode getAddress() {
-        return address;
-    }
-
-    public boolean usePrecise() {
-        return precise;
-    }
-}