https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111543
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
/* (X & ~Y) & Y -> 0 */
(simplify
(bit_and:c (bit_and @0 @1) @2)
(with { bool wascmp; }
(if (bitwise_inverted_equal_p (@0, @2, wascmp)
|| bitwise_inverted_equal_p (@1, @2, wascmp))
{ wascmp ? constant_boolean_node (false, type) : build_zero_cst (type); })))
/* (X | ~Y) | Y -> -1 */
(simplify
(bit_ior:c (bit_ior @0 @1) @2)
(with { bool wascmp; }
(if ((bitwise_inverted_equal_p (@0, @2, wascmp)
|| bitwise_inverted_equal_p (@1, @2, wascmp))
&& (!wascmp || element_precision (type) == 1))
{ build_all_ones_cst (TREE_TYPE (@0)); })))
