https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113138
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #2) > Will something then fold it further if it is actually ~X s< X (because the > above would then fold it into ~X s< 0)? Yes there is already a pattern for that: /* Fold ~X op C as X op' ~C, where op' is the swapped comparison. */ Which should handle the `~X u< signbit(X)` one too.
