[Bug middle-end/116486] [15 Regression] wrong code with __builtin_stdc_first_leading_one() at -O2 -fno-tree-ccp

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116486

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-08-26

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
In GCC 14 (from evrp):
```
Folding statement: _4 = _3 / 0x100000000000000000000000000000000;
Queued stmt for removal.  Folds to: 0
Folding statement: _1 = .CLZ (_4, -1);
gimple_simplified to _1 = -1;
```

On the trunk:
```
Folding statement: _4 = _3 / 0x100000000000000000000000000000000;
Queued stmt for removal.  Folds to: 0
Folding statement: _1 = .CLZ (_4, -1);
Queued stmt for removal.  Folds to: 128
```