[Bug c/83703] Loop termination condition ignored in -O3, works in -O2 or with smaller values

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83703

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If you want to have signed integer overflow being defined as wrapping use
-fwrapv.