[Bug tree-optimization/111149] New: bool0 != bool1 should be convert into bool0 ^ bool1

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111149

            Bug ID: 111149
           Summary: bool0 != bool1 should be convert into bool0 ^ bool1
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Take:
```
_Bool k(_Bool a, _Bool b)
{
  return a != b;
}
```
This should be changed into:
```
_Bool k0(_Bool a, _Bool b)
{
  return a ^ b;
}
```

Note clange handles this.

The main problem with this is with respect to having it inside GIMPLE_COND ...