diff -r 000000000000 -r 6474c204b198 js/src/jit/x64/CodeGenerator-x64.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit/x64/CodeGenerator-x64.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_x64_CodeGenerator_x64_h
+#define jit_x64_CodeGenerator_x64_h
+
+#include "jit/shared/CodeGenerator-x86-shared.h"
+
+namespace js {
+namespace jit {
+
+class CodeGeneratorX64 : public CodeGeneratorX86Shared
+{
+    CodeGeneratorX64 *thisFromCtor() {
+        return this;
+    }
+
+  protected:
+    ValueOperand ToValue(LInstruction *ins, size_t pos);
+    ValueOperand ToOutValue(LInstruction *ins);
+    ValueOperand ToTempValue(LInstruction *ins, size_t pos);
+
+
+    void loadUnboxedValue(Operand source, MIRType type, const LDefinition *dest);
+    void storeUnboxedValue(const LAllocation *value, MIRType valueType,
+                           Operand dest, MIRType slotType);
+
+    void storeElementTyped(const LAllocation *value, MIRType valueType, MIRType elementType,
+                           const Register &elements, const LAllocation *index);
+
+  public:
+    CodeGeneratorX64(MIRGenerator *gen, LIRGraph *graph, MacroAssembler *masm);
+
+  public:
+    bool visitValue(LValue *value);
+    bool visitBox(LBox *box);
+    bool visitUnbox(LUnbox *unbox);
+    bool visitLoadSlotV(LLoadSlotV *ins);
+    bool visitLoadSlotT(LLoadSlotT *load);
+    bool visitStoreSlotT(LStoreSlotT *store);
+    bool visitLoadElementT(LLoadElementT *load);
+    bool visitImplicitThis(LImplicitThis *lir);
+    bool visitInterruptCheck(LInterruptCheck *lir);
+    bool visitCompareB(LCompareB *lir);
+    bool visitCompareBAndBranch(LCompareBAndBranch *lir);
+    bool visitCompareV(LCompareV *lir);
+    bool visitCompareVAndBranch(LCompareVAndBranch *lir);
+    bool visitTruncateDToInt32(LTruncateDToInt32 *ins);
+    bool visitTruncateFToInt32(LTruncateFToInt32 *ins);
+    bool visitLoadTypedArrayElementStatic(LLoadTypedArrayElementStatic *ins);
+    bool visitStoreTypedArrayElementStatic(LStoreTypedArrayElementStatic *ins);
+    bool visitAsmJSLoadHeap(LAsmJSLoadHeap *ins);
+    bool visitAsmJSStoreHeap(LAsmJSStoreHeap *ins);
+    bool visitAsmJSLoadGlobalVar(LAsmJSLoadGlobalVar *ins);
+    bool visitAsmJSStoreGlobalVar(LAsmJSStoreGlobalVar *ins);
+    bool visitAsmJSLoadFuncPtr(LAsmJSLoadFuncPtr *ins);
+    bool visitAsmJSLoadFFIFunc(LAsmJSLoadFFIFunc *ins);
+    bool visitAsmJSUInt32ToDouble(LAsmJSUInt32ToDouble *lir);
+    bool visitAsmJSUInt32ToFloat32(LAsmJSUInt32ToFloat32 *lir);
+
+    void postAsmJSCall(LAsmJSCall *lir) {}
+};
+
+typedef CodeGeneratorX64 CodeGeneratorSpecific;
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_x64_CodeGenerator_x64_h */