[Bug tree-optimization/116518] GCC does not optimize-out useless operations. Clang does.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116518

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-08-28
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
```
  __builtin_memcpy (_25, &MEM[(const struct array *)&D.94502]._M_elems, 3);
  D.94502 ={v} {CLOBBER(eos)};
  operator delete (_25, 3);
```

The memcpy here is not deleted even though it is dead.