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diff --git a/Source/JavaScriptCore/b3/B3PatchpointSpecial.h b/Source/JavaScriptCore/b3/B3PatchpointSpecial.h
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+++ b/Source/JavaScriptCore/b3/B3PatchpointSpecial.h
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+/*
+ * Copyright (C) 2015-2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#pragma once
+
+#if ENABLE(B3_JIT)
+
+#include "B3StackmapSpecial.h"
+
+namespace JSC { namespace B3 {
+
+// This is a special that recognizes that there are two uses of Patchpoint: Void and and non-Void.
+// In the Void case, the syntax of the Air Patch instruction is:
+//
+//     Patch &patchpoint, args...
+//
+// Where "args..." are the lowered arguments to the Patchpoint instruction. In the non-Void case
+// we will have:
+//
+//     Patch &patchpoint, result, args...
+
+class PatchpointSpecial : public StackmapSpecial {
+public:
+    PatchpointSpecial();
+    virtual ~PatchpointSpecial();
+
+protected:
+    void forEachArg(Air::Inst&, const ScopedLambda<Air::Inst::EachArgCallback>&) override;
+    bool isValid(Air::Inst&) override;
+    bool admitsStack(Air::Inst&, unsigned argIndex) override;
+
+    // NOTE: the generate method will generate the hidden branch and then register a LatePath that
+    // generates the stackmap. Super crazy dude!
+
+    CCallHelpers::Jump generate(Air::Inst&, CCallHelpers&, Air::GenerationContext&) override;
+    
+    bool isTerminal(Air::Inst&) override;
+
+    void dumpImpl(PrintStream&) const override;
+    void deepDumpImpl(PrintStream&) const override;
+};
+
+} } // namespace JSC::B3
+
+#endif // ENABLE(B3_JIT)