https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108847
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So looking into this a little futher. The problem is VRP turns !=0 into (bool) and then expand comes along and decides that a cast to bool needs &1 because well it just. I am going to look into see if I can remove the &1 there ...
