[Bug target/54531] vpermilpd(x, 2 or 10) is a move

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54531

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> 2012-09-09 09:30:57 UTC ---
As a side note, is there a reason to prefer vpermpd to vpermilpd when both are
available (apart from the fact that they are written in that order in the .md
file)? I would expect that by default we take the intra-lane version, which in
theory could be cheaper on some machines. I guess in practice they are
equivalent and it doesn't matter...