[Turbofan] CodeGenerator for ARM avoids moves from VFP to general regs.

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 4f0ee82c000422f792993af20762f6d2c87568f9..29eaed2e0b57c7cc5d1fd00a4bc6d73ed4049810 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -549,13 +549,12 @@ class MacroAssembler: public Assembler {
   void VmovLow(Register dst, DwVfpRegister src);
   void VmovLow(DwVfpRegister dst, Register src);
 
-  // Simulate s-register moves for imaginary s32 - s63 registers.
-  void VmovExtended(Register dst, int src_code);
-  void VmovExtended(int dst_code, Register src);
-  // Move between s-registers and imaginary s-registers.
-  void VmovExtended(int dst_code, int src_code, Register scratch);
-  void VmovExtended(int dst_code, const MemOperand& src, Register scratch);
-  void VmovExtended(const MemOperand& dst, int src_code, Register scratch);
+  // Simulate s-register moves and swaps for imaginary s32 - s63 registers.
+  void VmovExtended(int dst_code, int src_code);
+  void VmovExtended(int dst_code, const MemOperand& src);
+  void VmovExtended(const MemOperand& dst, int src_code);
+  void VswpExtended(int dst_code, int src_code);
+  void VswpExtended(const MemOperand& dst, int src_code);
 
   void LslPair(Register dst_low, Register dst_high, Register src_low,
                Register src_high, Register scratch, Register shift);