Introduce MoveDouble to the X64 MacroAssembler

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index 94650fd49a28483023572ca79a94d9b4adf4a873..b066079877f6775f1de570a3dad67f837027151f 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -2440,7 +2440,7 @@ Handle<Code> CallStubCompiler::CompileMathAbsCall(
   // Check if the argument is a heap number and load its value.
   __ bind(&not_smi);
   __ CheckMap(rax, factory()->heap_number_map(), &slow, DONT_DO_SMI_CHECK);
-  __ movq(rbx, FieldOperand(rax, HeapNumber::kValueOffset));
+  __ MoveDouble(rbx, FieldOperand(rax, HeapNumber::kValueOffset));
 
   // Check the sign of the argument. If the argument is positive,
   // just return it.
@@ -2458,7 +2458,7 @@ Handle<Code> CallStubCompiler::CompileMathAbsCall(
   __ bind(&negative_sign);
   __ xor_(rbx, rdi);
   __ AllocateHeapNumber(rax, rdx, &slow);
-  __ movq(FieldOperand(rax, HeapNumber::kValueOffset), rbx);
+  __ MoveDouble(FieldOperand(rax, HeapNumber::kValueOffset), rbx);
   __ ret(2 * kPointerSize);
 
   // Tail call the full function. We do not have to patch the receiver