Revert of [x64] Use vcvtlsi2sd when AVX is enabled

test/cctest/test-assembler-x64.cc

 // Copyright 2009 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1341 matching lines @@
     Label exit;
     // arguments in xmm0, xmm1 and xmm2
     __ movl(rax, Immediate(0));
 
     __ vmaxsd(xmm4, xmm0, xmm1);
     __ subq(rsp, Immediate(kDoubleSize * 2));  // For memory operand
     __ vmovsd(Operand(rsp, kDoubleSize), xmm4);
     __ vmovsd(xmm5, Operand(rsp, kDoubleSize));
     __ vmovsd(xmm6, xmm5);
     __ vmovapd(xmm3, xmm6);
-
-    __ movl(rdi, Immediate(6));
-    __ vcvtlsi2sd(xmm6, xmm6, rdi);
-    __ movl(Operand(rsp, 0), Immediate(5));
-    __ vcvtlsi2sd(xmm7, xmm7, Operand(rsp, 0));
-    __ vsubsd(xmm7, xmm6, xmm7);  // xmm7 is 1.0
-    __ vmulsd(xmm1, xmm1, xmm7);
     __ addq(rsp, Immediate(kDoubleSize * 2));
 
     __ vucomisd(xmm3, xmm1);
     __ j(parity_even, &exit);
     __ j(not_equal, &exit);
     __ movl(rax, Immediate(1));
 
     __ vminsd(xmm3, xmm1, xmm2);
     __ vucomisd(xmm3, xmm1);
     __ j(parity_even, &exit);
@@ skipping 704 matching lines @@
 
   F1 f = FUNCTION_CAST<F1>(code->entry());
   for (int i = 0; i < kNumCases; ++i) {
     int res = f(i);
     PrintF("f(%d) = %d\n", i, res);
     CHECK_EQ(values[i], res);
   }
 }
 
 #undef __