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diff --git a/Source/JavaScriptCore/b3/air/AirCCallSpecial.h b/Source/JavaScriptCore/b3/air/AirCCallSpecial.h
deleted file mode 100644
index d8ed867ac..000000000
--- a/Source/JavaScriptCore/b3/air/AirCCallSpecial.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (C) 2015 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. 
- */
-
-#ifndef AirCCallSpecial_h
-#define AirCCallSpecial_h
-
-#if ENABLE(B3_JIT)
-
-#include "AirSpecial.h"
-
-namespace JSC { namespace B3 { namespace Air {
-
-// Use this special for constructing a C call. Arg 0 is of course a Special arg that refers to the
-// CCallSpecial object. Arg 1 is the callee, and it can be an ImmPtr, a register, or an address. The
-// next three args - arg 2, arg 3, and arg 4 - hold the return value GPRs and FPR. The remaining args
-// are just the set of argument registers used by this call. For arguments that go to the stack, you
-// have to do the grunt work of doing those stack stores. In fact, the only reason why we specify the
-// argument registers as arguments to a call is so that the liveness analysis can see that they get
-// used here. It would be wrong to automagically report all argument registers as being used because
-// if we had a call that didn't pass them, then they'd appear to be live until some clobber point or
-// the prologue, whichever happened sooner.
-
-class CCallSpecial : public Special {
-public:
-    CCallSpecial();
-    ~CCallSpecial();
-
-    // You cannot use this register to pass arguments. It just so happens that this register is not
-    // used for arguments in the C calling convention. By the way, this is the only thing that causes
-    // this special to be specific to C calls.
-    static const GPRReg scratchRegister = GPRInfo::nonArgGPR0;
-
-protected:
-    void forEachArg(Inst&, const ScopedLambda<Inst::EachArgCallback>&) override;
-    bool isValid(Inst&) override;
-    bool admitsStack(Inst&, unsigned argIndex) override;
-    void reportUsedRegisters(Inst&, const RegisterSet&) override;
-    CCallHelpers::Jump generate(Inst&, CCallHelpers&, GenerationContext&) override;
-    const RegisterSet& extraEarlyClobberedRegs(Inst&) override;
-    const RegisterSet& extraClobberedRegs(Inst&) override;
-
-    void dumpImpl(PrintStream&) const override;
-    void deepDumpImpl(PrintStream&) const override;
-
-private:
-    static const unsigned specialArgOffset = 0;
-    static const unsigned numSpecialArgs = 1;
-    static const unsigned calleeArgOffset = numSpecialArgs;
-    static const unsigned numCalleeArgs = 1;
-    static const unsigned returnGPArgOffset = numSpecialArgs + numCalleeArgs;
-    static const unsigned numReturnGPArgs = 2;
-    static const unsigned returnFPArgOffset = numSpecialArgs + numCalleeArgs + numReturnGPArgs;
-    static const unsigned numReturnFPArgs = 1;
-    static const unsigned argArgOffset =
-        numSpecialArgs + numCalleeArgs + numReturnGPArgs + numReturnFPArgs;
-    
-    RegisterSet m_clobberedRegs;
-    RegisterSet m_emptyRegs;
-};
-
-} } } // namespace JSC::B3::Air
-
-#endif // ENABLE(B3_JIT)
-
-#endif // AirCCallSpecial_h
-