[Bug target/116013] Missed optimization opportunity with andn involving consts

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116013

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=111949
   Last reconfirmed|                            |2024-07-23

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The combine issue is:
```
Failed to match this instruction:
(set (reg:DI 101 [ _3 ])
    (and:DI (not:DI (reg:DI 104))
        (const_int -9187201950435737472 [0x8080808080808080])))
Successfully matched this instruction:
(set (reg:DI 102 [ _1 ])
    (not:DI (reg:DI 104)))
Failed to match this instruction:
(set (reg:DI 101 [ _3 ])
    (and:DI (reg:DI 102 [ _1 ])
        (const_int -9187201950435737472 [0x8080808080808080])))
```

which is very similar to PR 111949 and similar to PR 115086.