[Bug tree-optimization/125501] [14/15/16/17 Regression] wrong code at -O3 that crashes at runtime

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125501

--- Comment #3 from Drea Pinski <pinskia at gcc dot gnu.org> ---
`-O2 -funswitch-loops` shows the issue too.