[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 #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With just -mavx -O3 instead of -march=corei7-avx -O3, r165435 still works
properly, r165436 ICEs, r165599 fixed the ICE, but the result is 10.0 already.