http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47298
Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 --- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-06-29 15:01:28 UTC --- The issue is we completely unroll the innermost loop at -O3 -funroll-loops. We then vectorize the outer loop but have to peel for alignment (and are not good at seeing we run at most once there).