http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45422
--- Comment #41 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-27 16:28:49 UTC --- With additional -fno-prefetch-loop-arrays the TOTAL goes down from that 137s to 92.23, and judging from tree dumps between 4.5 and 4.6 we do significantly more vectorization too (4.6 *.ifcvt is 4.7MB compared to 5.3MB 4.5 *.ifcvt, while 4.6 *.vect grows to 8.3MB while 4.5 *.vect stays at 5.3MB).
