[Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86735

--- Comment #12 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #11)
> Thanks for the explanation. Note that
> 
> % gfcp pr86735.f90 -Ofast -march=skylake -Wall -Wextra -fcheck=all

That probably just means that -fcheck prevents the optimization passes from
applying AVX512 instructions. Please cut the noise!