http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50716
Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2011-10-14 CC|richard.guenther at gmail |rguenth at gcc dot gnu.org |dot com | Ever Confirmed|0 |1 --- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-14 09:30:37 UTC --- In this case the compiler knows that p is aligned to 8, misaligned 1, so it has all the information to ensure to use an unaligned vector move. So I belive it should use that information. Somebody needs to step through RTL expansion and see where we ignore the information.