[Bug tree-optimization/107765] missing (int)-(unsigned)int_val to just -int_val if int_val is known not to contain INT_MIN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107765

--- Comment #7 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Note:
```

+        tree stype = signed_type_for (type);
+       auto minvalue = wi::min_value (stype);
+       int_range_max valid_range (TREE_TYPE (@0), minvalue, minvalue);
+       vr.intersect (valid_range);
+       /* If the range does not include min value,
+          then we can do this change around. */
+       if (vr.undefined_p ())
+         contains_signed_min = false;
```

can be simplified down to just:
tree stype = signed_type_for (type);
if (vrp.contains_p (wi::min_value (stype)))

I don't know why I didn't do that before. anyways Learning more about ranges in
those years now.