Revert of [x64] Use vcvtlsi2sd 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 1293 matching lines @@
   }
   void vmaxsd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vsd(0x5f, dst, src1, src2);
   }
   void vminsd(XMMRegister dst, XMMRegister src1, XMMRegister src2) {
     vsd(0x5d, dst, src1, src2);
   }
   void vminsd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vsd(0x5d, dst, src1, src2);
   }
-  void vcvtlsi2sd(XMMRegister dst, XMMRegister src1, Register src2) {
-    XMMRegister isrc2 = {src2.code()};
-    vsd(0x2a, dst, src1, isrc2);
-  }
-  void vcvtlsi2sd(XMMRegister dst, XMMRegister src1, const Operand& src2) {
-    vsd(0x2a, dst, src1, src2);
-  }
   void vucomisd(XMMRegister dst, XMMRegister src);
   void vucomisd(XMMRegister dst, const Operand& src);
   void vsd(byte op, XMMRegister dst, XMMRegister src1, XMMRegister src2);
   void vsd(byte op, XMMRegister dst, XMMRegister src1, const Operand& src2);
 
   void vaddss(XMMRegister dst, XMMRegister src1, XMMRegister src2) {
     vss(0x58, dst, src1, src2);
   }
   void vaddss(XMMRegister dst, XMMRegister src1, const Operand& src2) {
     vss(0x58, dst, src1, src2);
@@ skipping 788 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_