[Bug tree-optimization/70729] Loop marked with omp simd pragma is not vectorized

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70729

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Doing invariant motion before PRE makes sense (w/o store motion, after
loop header copying).