http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50353
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |INVALID --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-01 00:54:12 UTC --- As mentioned, -O0 does not use vec_set and that is on purpose. You have to compile with optimizations turned on.