title: gcc inline asm, unknown sse opcode
body: <p>I work in an organisation which uses a very old version of gcc, which does not support sse4 intrinsics.</p>
  
  <p>Is it possible to write an inline asm equivalent version of _mm_blendv_pd?</p>
  
  <p>Of course, the gcc version I work with does not know the corresponding opcode. I wonder if there is a way to specify directly the hexadecimal code of the opcode instead of using its mnemonic. </p>
  
  <p>Any help or reference would be greatly apprendiated. Thanks</p>
  
  <p>Regards </p>