diff -r 000000000000 -r 6474c204b198 js/src/jit/arm/MoveEmitter-arm.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit/arm/MoveEmitter-arm.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,64 @@
+/* -*- 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_arm_MoveEmitter_arm_h
+#define jit_arm_MoveEmitter_arm_h
+
+#include "jit/IonMacroAssembler.h"
+#include "jit/MoveResolver.h"
+
+namespace js {
+namespace jit {
+
+class CodeGenerator;
+
+class MoveEmitterARM
+{
+    bool inCycle_;
+    MacroAssemblerARMCompat &masm;
+
+    // Original stack push value.
+    uint32_t pushedAtStart_;
+
+    // These store stack offsets to spill locations, snapshotting
+    // codegen->framePushed_ at the time they were allocated. They are -1 if no
+    // stack space has been allocated for that particular spill.
+    int32_t pushedAtCycle_;
+    int32_t pushedAtSpill_;
+
+    // These are registers that are available for temporary use. They may be
+    // assigned InvalidReg. If no corresponding spill space has been assigned,
+    // then these registers do not need to be spilled.
+    Register spilledReg_;
+    FloatRegister spilledFloatReg_;
+
+    void assertDone();
+    Register tempReg();
+    FloatRegister tempFloatReg();
+    Operand cycleSlot() const;
+    Operand spillSlot() const;
+    Operand toOperand(const MoveOperand &operand, bool isFloat) const;
+
+    void emitMove(const MoveOperand &from, const MoveOperand &to);
+    void emitFloat32Move(const MoveOperand &from, const MoveOperand &to);
+    void emitDoubleMove(const MoveOperand &from, const MoveOperand &to);
+    void breakCycle(const MoveOperand &from, const MoveOperand &to, MoveOp::Type type);
+    void completeCycle(const MoveOperand &from, const MoveOperand &to, MoveOp::Type type);
+    void emit(const MoveOp &move);
+
+  public:
+    MoveEmitterARM(MacroAssemblerARMCompat &masm);
+    ~MoveEmitterARM();
+    void emit(const MoveResolver &moves);
+    void finish();
+};
+
+typedef MoveEmitterARM MoveEmitter;
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_arm_MoveEmitter_arm_h */