[Bug tree-optimization/113072] `(a ^ CST0) & (~a ^ CST0)` is not optimized to 0 at the gimple level

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113072

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note this applies to `|` instead of `&` too:
```
int foo1(int a, int b)
{
        return  (a ^ 4) | (~a ^ 4);
}
```
This should be optimized to `-1`. Though this does NOT get optimized to `-1` on
the RTL level ...