[Bug c/79518] __builtin_assume_aligned should mark argument as aligned

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79518

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WONTFIX
           Severity|normal                      |enhancement

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The builtin was made so any rvalue can be assigned an alignment.  It's not
clear what other compilers do to __assume_aligned (ptr + 3, 16) for example.