[Bug middle-end/47298] -O3 destroys beautifully vectorized code obtained at -O2

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47298

--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-05 
10:11:55 UTC ---
Oh, and you can disable cunrolli already via -fdisable-tree-cunrolli.