[patch] Fix PR43464: update loop closed SSA form once copy prop is done

[Sebastian Pop]

Hi,

On Thu, Apr 1, 2010 at 05:28, Michael Matz <matz@suse.de> wrote:
>> Michael, do you see other places in graphite-sese-to-poly.c that
>> may still have similar problems?
>
> No, that's the one I meant.  1) Are you sure BB->loop structure is current
> when that function is called, so that loop_exit_edge_p works?

yes.

I found another problem a few lines below that point: in
rewrite_close_phi_out_of_ssa we assume that the phi node has
only one argument:

  tree arg = gimple_phi_arg_def (phi, 0);

I am working on correcting this.

Sebastian