[Bug tree-optimization/118922] [12/13/14/15 regression] Miscompile at -O2/3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118922

--- Comment #20 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So the issue is empty_or_with_defined_p is true but the middle_bb has a phi in
it.
And that is the fix rather previous patch here.