http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52607
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |UNCONFIRMED Ever Confirmed|1 |0 --- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-27 16:53:24 UTC --- (In reply to comment #17) > By the way, I have trouble understanding this comment: > /* For d->op0 == d->op1 the only useful vperm2f128 permutation > is 0x10. */ > Is it really 0x10, or is there a stray 0 at the end and it is really just 1? Yeah, you are right, perm 1 (which actually is emitted as $33 immediate anyway, as vperm2f128 insn is used with the same register operand twice.