[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The timing increase disappears if the code is compiled with
-fno-tree-dominator-opts.