[x64] Fix the assembler and the disassembler.

test/cctest/test-disasm-x64.cc

 // Copyright 2011 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 440 matching lines @@
     __ andpd(xmm0, xmm1);
 
     __ pslld(xmm0, 6);
     __ psrld(xmm0, 6);
     __ psllq(xmm0, 6);
     __ psrlq(xmm0, 6);
 
     __ pcmpeqd(xmm1, xmm0);
 
     __ punpckldq(xmm1, xmm11);
+    __ punpckldq(xmm5, Operand(rdx, 4));
     __ punpckhdq(xmm8, xmm15);
   }
 
   // cmov.
   {
     __ cmovq(overflow, rax, Operand(rax, 0));
     __ cmovq(no_overflow, rax, Operand(rax, 1));
     __ cmovq(below, rax, Operand(rax, 2));
     __ cmovq(above_equal, rax, Operand(rax, 3));
     __ cmovq(equal, rax, Operand(rbx, 0));
@@ skipping 40 matching lines @@
       __ movups(xmm5, Operand(rdx, 4));
       __ movups(Operand(rdx, 4), xmm5);
       __ paddd(xmm5, xmm1);
       __ paddd(xmm5, Operand(rdx, 4));
       __ psubd(xmm5, xmm1);
       __ psubd(xmm5, Operand(rdx, 4));
       __ pmulld(xmm5, xmm1);
       __ pmulld(xmm5, Operand(rdx, 4));
       __ pmuludq(xmm5, xmm1);
       __ pmuludq(xmm5, Operand(rdx, 4));
-      __ punpackldq(xmm5, xmm1);
-      __ punpackldq(xmm5, Operand(rdx, 4));
       __ psrldq(xmm5, 123);
       __ pshufd(xmm5, xmm1, 3);
       __ cvtps2dq(xmm5, xmm1);
       __ cvtps2dq(xmm5, Operand(rdx, 4));
       __ cvtdq2ps(xmm5, xmm1);
       __ cvtdq2ps(xmm5, Operand(rdx, 4));
     }
   }
 
   // AVX instruction
@@ skipping 289 matching lines @@
 #ifdef OBJECT_PRINT
   OFStream os(stdout);
   code->Print(os);
   byte* begin = code->instruction_start();
   byte* end = begin + code->instruction_size();
   disasm::Disassembler::Disassemble(stdout, begin, end);
 #endif
 }
 
 #undef __