[Bug tree-optimization/71149] missing modulo 2 optimization converting result to bool

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71149

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Most likely the opt needs to be moved from fold-const to match.pd .  Should be
a simple patch.