Introduce MoveDouble to the X64 MacroAssembler

src/x64/codegen-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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
@@ skipping 448 matching lines @@
                             times_8,
                             FixedDoubleArray::kHeaderSize));
   // r9 : current element's index
   // r14: current element
   __ cmpq(r14, rsi);
   __ j(equal, &convert_hole);
 
   // Non-hole double, copy value into a heap number.
   __ AllocateHeapNumber(rax, r15, &gc_required);
   // rax: new heap number
-  __ movq(FieldOperand(rax, HeapNumber::kValueOffset), r14);
+  __ MoveDouble(FieldOperand(rax, HeapNumber::kValueOffset), r14);
   __ movq(FieldOperand(r11,
                        r9,
                        times_pointer_size,
                        FixedArray::kHeaderSize),
           rax);
   __ movq(r15, r9);
   __ RecordWriteArray(r11,
                       rax,
                       r15,
                       kDontSaveFPRegs,
@@ skipping 279 matching lines @@
     // argument_count_reg_ * times_pointer_size + (receiver - 1) * kPointerSize.
     return Operand(base_reg_, argument_count_reg_, times_pointer_size,
         displacement_to_last_argument + (receiver - 1 - index) * kPointerSize);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64