[Bug tree-optimization/110992] [14 Regression] Dead Code Elimination Regression at -O3 since r14-1654-g7ceed7e3e29

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110992

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |14.0
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-08-11
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed the problem is ethread is not able to do the jump threading with the
new IR:
```
Checking profitability of path (backwards):  bb:3 (3 insns) bb:2
  Control statement insns: 2
  Overall: 1 insns

 Registering killing_def (path_oracle) b.0_1
 Registering killing_def (path_oracle) _7
 Registering killing_def (path_oracle) _6
 Registering killing_def (path_oracle) _25
 Registering killing_def (path_oracle) _3
 Registering killing_def (path_oracle) c.1_2
path: 2->3->xx REJECTED
```

I don't understand why though ...