--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/methods/locals/InitFlipFlopSlotNode.java	Mon Jan 06 17:12:09 2014 +0000
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package com.oracle.truffle.ruby.nodes.methods.locals;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.ruby.nodes.*;
+import com.oracle.truffle.ruby.runtime.*;
+
+public class InitFlipFlopSlotNode extends RubyNode {
+
+    private final FrameSlot frameSlot;
+
+    public InitFlipFlopSlotNode(RubyContext context, SourceSection sourceSection, FrameSlot frameSlot) {
+        super(context, sourceSection);
+        this.frameSlot = frameSlot;
+    }
+
+    @Override
+    public void executeVoid(VirtualFrame frame) {
+        frame.setBoolean(frameSlot, false);
+    }
+
+    @Override
+    public Object execute(VirtualFrame frame) {
+        executeVoid(frame);
+        return null;
+    }
+
+}