[Bug tree-optimization/126029] `!bool_var + 1`, `2 - bool_var`, `1<<!a` all should produce the same code

[kaelfandrew at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126029

--- Comment #2 from Kael Franco <kaelfandrew at gmail dot com> ---
(In reply to Drea Pinski from comment #0)
> int g2(_Bool a)
> {
>   return 1<<a;
> }
> ```
> 
> `1 + a` would be the best

Also
int
g3 (_Bool a) {
  return (a ? 2 : 1);
}

LLVM bug: https://github.com/llvm/llvm-project/issues/206708