[Bug middle-end/70140] Inefficient expansion of __builtin_mempcpy

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70140

--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
> > 
> > Yep, I've noticed. It's strange for me why it's not working. I've just asked
> > at GCC ML: https://gcc.gnu.org/ml/gcc/2017-07/msg00144.html
> 
> It's marked as a tailcall so anything you generate afterwards will be
> ignored:

Thanks, knowing that it was easy to fix ;) I'm going to test the patch and will
send it to mailing list.