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

src/x64/assembler-x64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 1249 matching lines @@
   }
   void vfnmsub213ss(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vfmass(0xaf, dst, src1, src2);
   }
   void vfnmsub231ss(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vfmass(0xbf, dst, src1, src2);
   }
   void vfmass(byte op, XMMRegister dst, XMMRegister src1, XMMRegister src2);
   void vfmass(byte op, XMMRegister dst, XMMRegister src1, const Operand& src2);
 
+  void vmovapd(XMMRegister dst, XMMRegister src);
+  void vmovsd(XMMRegister dst, const Operand& src) {
+    vsd(0x10, dst, xmm0, src);
+  }
+  void vmovsd(XMMRegister dst, XMMRegister src) { vsd(0x10, dst, xmm0, src); }
+  void vmovsd(const Operand& dst, XMMRegister src) {
+    vsd(0x11, src, xmm0, dst);
+  }
   void vaddsd(XMMRegister dst, XMMRegister src1, XMMRegister src2) {
     vsd(0x58, dst, src1, src2);
   }
   void vaddsd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vsd(0x58, dst, src1, src2);
   }
   void vsubsd(XMMRegister dst, XMMRegister src1, XMMRegister src2) {
     vsd(0x5c, dst, src1, src2);
   }
   void vsubsd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
@@ skipping 824 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_