[Bug tree-optimization/110637] (type)(zeroonep !=/== 0) should be optimized as (type)zeroonep/zeroonep^1 earlier than vrp

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110637

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Maybe zero_one_valued_p needs a

(match zero_one_valued_p
 (bit_and @0 integer_onep))

?  (hopefully for signed 1-bit precision that doesn't match)