https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114787
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The first difference (in GCC 13) with/without -fdump-tree-all-all comes from
cunroll:
Broken:
```
Loop 3 iterates 2 times.
Loop 3 iterates at most 1 times.
Loop 3 likely iterates at most 1 times.
Analyzing # of iterations of loop 3
exit condition [2, + , 4294967295] != 0
bounds on difference of bases: -2 ... -2
result:
# of iterations 2, bounded by 2
Removed pointless exit: if (ivtmp_43 != 0)
```
Working:
```
Loop 3 iterates 2 times.
Loop 3 iterates at most 2 times.
Loop 3 likely iterates at most 2 times.
```
