https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121103
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> Confirmed.
>
> When `memmove(p->d, a.s, a.n);` is folded into:
>
> ;; basic block 3, loop depth 0
> ;; pred: 2
> _7 = MEM <unsigned long> [(char * {ref-all})&c];
> MEM <unsigned long> [(char * {ref-all})&b] = _7;
> ;; succ:
>
> The noreturn function call is gone. I am not sure what is the correct fix.
Not doing s/a.n/8/ also causes the problem but in forwprop1 rather than fre.
