Introduce MoveInteger64 instruction into X64 Macro Assembler

src/x64/stub-cache-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 2275 matching lines @@
 
   // Smi tag and return.
   __ Integer32ToSmi(rax, rax);
   __ bind(&smi);
   __ ret(2 * kPointerSize);
 
   // Check if the argument is < 2^kMantissaBits.
   Label already_round;
   __ bind(&conversion_failure);
   int64_t kTwoMantissaBits= V8_INT64_C(0x4330000000000000);
-  __ movq(rbx, kTwoMantissaBits);
+  __ MoveInteger64(rbx, kTwoMantissaBits);
   __ movq(xmm1, rbx);
   __ ucomisd(xmm0, xmm1);
   __ j(above_equal, &already_round);
 
   // Save a copy of the argument.
   __ movaps(xmm2, xmm0);
 
   // Compute (argument + 2^kMantissaBits) - 2^kMantissaBits.
   __ addsd(xmm0, xmm1);
   __ subsd(xmm0, xmm1);
 
   // Compare the argument and the tentative result to get the right mask:
   //   if xmm2 < xmm0:
   //     xmm2 = 1...1
   //   else:
   //     xmm2 = 0...0
   __ cmpltsd(xmm2, xmm0);
 
   // Subtract 1 if the argument was less than the tentative result.
   int64_t kOne = V8_INT64_C(0x3ff0000000000000);
-  __ movq(rbx, kOne);
+  __ MoveInteger64(rbx, kOne);
   __ movq(xmm1, rbx);
   __ andpd(xmm1, xmm2);
   __ subsd(xmm0, xmm1);
 
   // Return a new heap number.
   __ AllocateHeapNumber(rax, rbx, &slow);
   __ movsd(FieldOperand(rax, HeapNumber::kValueOffset), xmm0);
   __ ret(2 * kPointerSize);
 
   // Return the argument (when it's an already round heap number).
@@ skipping 818 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_MissForceGeneric);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64