PRE lossage

[Andrew MacLeod]

On Tue, 2003-10-28 at 14:17, law@redhat.com wrote:
> In message <64E3BF94-097A-11D8-A9DD-000A95AF1FAE@dberlin.org>, Daniel Berlin wr
> ites:
>  >I've been putting off these bugs until switch lowering happens, since 
>  >that should allow us to pre-split the critical edges without any 
>  >trouble, and once that happens, insertion shouldn't require creating 
>  >new blocks, ever, and the whole problem goes away.
> I would be very wary of pre-splitting critical edges.  In my experience, it
> loses, badly.  Interestingly enough I was pre-splitting critical edges to
> help with PRE when I ran into the lame behavior.

Once we get everything lowered, the need to pre-split should dissappear.

Andrew