[Bug tree-optimization/127266] Missed vector optimization: `(((a ^ b) & C) == 0) | (a != b)` is not folded to all-true

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127266

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |easyhack,
                   |                            |missed-optimization
           Severity|normal                      |enhancement

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
I suspect the issue is the tree_expr_nonzero_p on the pattern.  See PR 126879
too.