[ast-optimizer-branch]: tree-cfg.c insertion fixes

[Jan Hubicka]

> On Tue, 04 Jun 2002, Jan Hubicka wrote:
> 
> > It would make sense to make such transformation on SSA form and update
> > it incrementally, as that would create new SSA names as needed.  Are
> > there some algoirithms to do such trick easilly and effectivly?
> > 
> I haven't really looked lately.  However, I seem to remember some
> thesis or TR or some such that pretty much concluded: don't
> bother with incremental updates.

OK, then I will hapilly stay with the current webizer pass :)
It eats about 0-2% of CPU time, so nothing that critical.

Honza