[Bug tree-optimization/64450] Optimize 0>=p-q to q>=p for char*p,*q;

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64450

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #1)
> See also PR61734, Eric already tried in May.

Maybe it is easier to handle now with simplify-and-match.