[Bug tree-optimization/95906] Failure to recognize max pattern with mask

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95906

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
  cmp_8 = -_2;
  _3 = cmp_8 & a_6(D);
We convert that into:
_2 * a_6(D);

And then have:
  _11 = _2 + -1;
  _5 = b_7(D) & _11;

This could be convert into:
(_11 ^ 1) * b_7(D)

```
(simplify
 (bit_and:c (convert? (plus zero_one_valued_p@0 integer_all_onesp)) @1)
 (if (INTEGRAL_TYPE_P (type)
      && INTEGRAL_TYPE_P (TREE_TYPE (@0))
      && TREE_CODE (TREE_TYPE (@0)) != BOOLEAN_TYPE
      /* Sign extending of the neg or a truncation of the neg
         is needed. */
      && (!TYPE_UNSIGNED (TREE_TYPE (@0))
          || TYPE_PRECISION (type) <= TYPE_PRECISION (TREE_TYPE (@0))))
 (mult (convert (bit_xor @0 { build_one_cst (TREE_TYPE (@0)); })) @1))
```