https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115199
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |15.0
Status|UNCONFIRMED |NEW
CC| |rguenth at gcc dot gnu.org
Keywords| |alias
Last reconfirmed| |2024-05-22
Ever confirmed|0 |1
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
```
Deleted dead call: # .MEM_6 = VDEF <.MEM_4>
# PT = null { D.2790 }
# ALIGN = 8, MISALIGN = 0
e_7 = memcpyD.1670 (f_5, "z", 1);
```
Note the volatile makes the difference. It seems like we miss that the memory
escapes through the volatile store so we delete the memcpy as being dead.
