[Bug tree-optimization/60276] [4.7/4.8/4.9 Regression] -O3 autovectorizer breaks on a particular loop

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60276

--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Note that in r196871 this was broken, but r196872 is fine.