https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65028
--- Comment #34 from H.J. Lu <hjl.tools at gmail dot com> ---
propagate_alignment_accross_jump_function seems wrong:
if (cur.known)
{
if (!dest_lat->alignment.known)
{
dest_lat->alignment = cur;
return true;
}
We can't change argument alignment from unknown to know.
We can only reduce argument alignment. Callee can only
assume the smallest argument alignment passed down from
all callers.
