[Bug tree-optimization/111148] Missing boolean optimizations due to comparisons

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111148

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The one which I had missed:

_Bool f(int x, int y, int w, int z)
{
  _Bool a = z == w;
  _Bool b = x == y;
  return (a & !b) | (a ^ b); // a ^ b
}