[x64] Implement vsqrtsd AVX instruction.

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 1300 matching lines @@
   AVX_3(instr##pd, opcode, vpd)
 
 #define AVX_3(instr, opcode, impl)                                     \
   void instr(XMMRegister dst, XMMRegister src1, XMMRegister src2) {    \
     impl(opcode, dst, src1, src2);                                     \
   }                                                                    \
   void instr(XMMRegister dst, XMMRegister src1, const Operand& src2) { \
     impl(opcode, dst, src1, src2);                                     \
   }
 
+  AVX_SP_3(vsqrt, 0x51);
   AVX_SP_3(vadd, 0x58);
   AVX_SP_3(vsub, 0x5c);
   AVX_SP_3(vmul, 0x59);
   AVX_SP_3(vdiv, 0x5e);
   AVX_SP_3(vmin, 0x5d);
   AVX_SP_3(vmax, 0x5f);
   AVX_P_3(vand, 0x54);
   AVX_P_3(vor, 0x56);
   AVX_P_3(vxor, 0x57);
   AVX_3(vpcmpeqd, 0x76, vpd);
@@ skipping 813 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_