--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotNodeLIRBuilder.java	2017-02-15 16:59:42.733520233 -0800
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2012, 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;
+
+import org.graalvm.compiler.core.match.MatchableNode;
+import org.graalvm.compiler.hotspot.nodes.CompressionNode;
+import org.graalvm.compiler.hotspot.nodes.DirectCompareAndSwapNode;
+import org.graalvm.compiler.lir.gen.LIRGenerator;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
+
+/**
+ * This interface defines the contract a HotSpot backend LIR generator needs to fulfill in addition
+ * to abstract methods from {@link LIRGenerator} and {@link NodeLIRBuilderTool}.
+ */
+@MatchableNode(nodeClass = CompressionNode.class, inputs = {"value"})
+public interface HotSpotNodeLIRBuilder {
+
+    void emitPatchReturnAddress(ValueNode address);
+
+    default void emitJumpToExceptionHandler(ValueNode address) {
+        emitPatchReturnAddress(address);
+    }
+
+    void emitJumpToExceptionHandlerInCaller(ValueNode handlerInCallerPc, ValueNode exception, ValueNode exceptionPc);
+
+    void visitDirectCompareAndSwap(DirectCompareAndSwapNode x);
+
+}