[Bug tree-optimization/125442] Missed (x == 0) | ((x | y) == 0) to (x == 0)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125442

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
This might be a dup.