[Bug tree-optimization/61680] [4.8/4.9/4.10 Regression] vectorization gives wrong answer for sandybridge target

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61680

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With -O3 -msse2 -fno-vect-cost-model it fails as well, so this isn't a problem
in the AVX support, just that before AVX it wasn't considered profitable to
vectorize it.