[Bug tree-optimization/101339] (bit_and (negate (convert thurth_value@1)) integer_onep) is not optimized to just @1

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101339

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
And

int f(int a, int b)
{
  _Bool c = a == b;
  int t = c;
  int t1 = t + 1;
  return t1 & 1;
}

is not optimized to return (int)a != b either (for any odd add).  Addition
of even adds is handled though.