[Bug tree-optimization/111364] New: `MAX_EXPR <= a` is not optimized to `a >= b`

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111364

            Bug ID: 111364
           Summary: `MAX_EXPR<a, b> <= a` is not optimized to `a >= b`
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

I Noticed this while looking into PR 111346:
```
_Bool test2(int a, int b)
{
        int t = a;
        if (t < b) t = b;
        return t <= a;
}
```
Should be optimized to just:
```
        return a >= b;
```

There is a pattern for constants:
/* MIN (X, C1) < C2 -> X < C2 || C1 < C2  */
But we could do the same when we know C1 == C2 and not constant (for
!HONOR_NANS & !HONOR_SIGNED_ZEROS).