[x64] Use vmovapd and vmovsd when AVX is enabled.

src/x64/assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/x64/assembler-x64.h"
 
 #include <cstring>
 
 #if V8_TARGET_ARCH_X64
 
@@ skipping 2667 matching lines @@
   emit_optional_rex_32(dst, src);
   emit(0x0F);
   emit(0x3A);
   emit(0x22);
   emit_sse_operand(dst, src);
   emit(imm8);
 }
 
 
 void Assembler::movsd(const Operand& dst, XMMRegister src) {
+  DCHECK(!IsEnabled(AVX));
   EnsureSpace ensure_space(this);
   emit(0xF2);  // double
   emit_optional_rex_32(src, dst);
   emit(0x0F);
   emit(0x11);  // store
   emit_sse_operand(src, dst);
 }
 
 
 void Assembler::movsd(XMMRegister dst, XMMRegister src) {
+  DCHECK(!IsEnabled(AVX));
   EnsureSpace ensure_space(this);
   emit(0xF2);  // double
   emit_optional_rex_32(dst, src);
   emit(0x0F);
   emit(0x10);  // load
   emit_sse_operand(dst, src);
 }
 
 
 void Assembler::movsd(XMMRegister dst, const Operand& src) {
+  DCHECK(!IsEnabled(AVX));
   EnsureSpace ensure_space(this);
   emit(0xF2);  // double
   emit_optional_rex_32(dst, src);
   emit(0x0F);
   emit(0x10);  // load
   emit_sse_operand(dst, src);
 }
 
 
 void Assembler::movaps(XMMRegister dst, XMMRegister src) {
@@ skipping 733 matching lines @@
 void Assembler::vfmass(byte op, XMMRegister dst, XMMRegister src1,
                        const Operand& src2) {
   DCHECK(IsEnabled(FMA3));
   EnsureSpace ensure_space(this);
   emit_vex_prefix(dst, src1, src2, kLIG, k66, k0F38, kW0);
   emit(op);
   emit_sse_operand(dst, src2);
 }
 
 
+void Assembler::vmovapd(XMMRegister dst, XMMRegister src) {
+  DCHECK(IsEnabled(AVX));
+  EnsureSpace ensure_space(this);
+  emit_vex_prefix(dst, xmm0, src, kLIG, k66, k0F, kWIG);
+  emit(0x28);
+  emit_sse_operand(dst, src);
+}
+
+
 void Assembler::vucomisd(XMMRegister dst, XMMRegister src) {
   DCHECK(IsEnabled(AVX));
   EnsureSpace ensure_space(this);
   emit_vex_prefix(dst, xmm0, src, kLIG, k66, k0F, kWIG);
   emit(0x2e);
   emit_sse_operand(dst, src);
 }
 
 
 void Assembler::vucomisd(XMMRegister dst, const Operand& src) {
@@ skipping 458 matching lines @@
 
 bool RelocInfo::IsInConstantPool() {
   return false;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64