[Bug tree-optimization/111149] bool0 != bool1 should be expanded as bool0 ^ bool1

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111149

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So implementing this breaks forwprop ...
Which I kinda of expected.

But we can do the canonicalization inside fold_stmt_1 and that works better.