[Bug tree-optimization/58228] [4.7/4.8/4.9 Regression] wrong code (with vectorization?) at -O3 on x86_64-linux-gnu

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58228

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is nested vectorization, where the step in the inner loop is 0, while in
the outer loop is bigger than that, and for inv_p we look at the step in the
outer loop in that case, while we perhaps should look at the inner one. 
Richard?