http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53346
--- Comment #12 from Uros Bizjak <ubizjak at gmail dot com> 2012-05-18 16:07:45 UTC --- (In reply to comment #11) > You are right. -ftree-vectorize implies -ftree-loop-if-convert and this option > makes all the difference! > > -O2 -ftree-vectorize: > > real 0m24.061s > user 0m23.789s > sys 0m0.225s > > -O2 -ftree-vectorize -fno-tree-loop-if-convert > > real 0m18.029s > user 0m17.761s > sys 0m0.220s -O2 -ftree-loop-if-convert: real 0m24.034s user 0m23.770s sys 0m0.218s -O2 real 0m18.163s user 0m17.892s sys 0m0.233s
