[Bug tree-optimization/50417] regression: memcpy with known alignment

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50417

--- Comment #13 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #12)
> 
> No, because the access is performed as 'int'.

> 
> >  Why should memcpy be any different?
> 
> Because the memcpy stmt doesn't constitute a memory access but a function
> call.

Yeah, that might be how things are handled internally.  But that doesn't mean
the optimization in question can't / shouldn't be done.  GCC does even more
"evil" things with function calls such as replacing printf with puts,
propagating arguments into functions, inlining...  So ... uhm ... I'm afraid I
don't get the point.