https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112629
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2023-11-19
Resolution|INVALID |---
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot
gnu.org
Status|RESOLVED |ASSIGNED
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Now if we know shift is known to be non-negative we should be able to this
optimization.
e.g.
```
int add_shift(signed shift) {
if (shift < 0) __builtin_unreachable();
return 1 << (shift + 4);
}
int add_shift_1(signed shift) {
shift &= 0xff;
return 1 << (shift + 4);
}
```
Mine.
