MEM flags and stack temps

[Richard Kenner]

    You seem to be thinking of a completely different problem.  Is this an
    issue with the ordering of the passes?

Yes.  The idea is that you want to keep stack slots as RTL objects as
long as possible to do optimizations on *them*.  But when you actually find
you *do* need them, you have to address them.  If the offset to address them
is large enough, that offset calculation itself would need to be cse'd
and moved out of loops.