https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101591
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> Mine, something like:
> (for cmp (eq ne)
> (simplify
> (cmp:c (bit_ior @0 INTEGER_CST@1) @0)
> (cmp:c (bit_and @1 (bit_not @0)) { build_zero_cst (TREE_TYPE(@0)); })))
>
> Note
maybe a power of 2 integer constant might be better because is just a shift and
an and in the end.
