[Bug tree-optimization/80457] vectorizable_condition does not update the vectorizer cost model

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80457

--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Patch here:  https://gcc.gnu.org/ml/gcc-patches/2017-04/msg00808.html

This is being held for GCC 8.