[Bug tree-optimization/128587] [16/17 Regression] Errant warning -Wmaybe-uninitialized at -O3 - but shows proper initialization

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128587

--- Comment #8 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Note -O3 -mavx2 is enough to get the warning. 

I wonder if we should get a better loop bounds in this case ...