PD scheduling environment available ?

I'm going to implement a scheduling method that claims to be an
improvement of region scheduling, to make a comparison.


Of course I'd not like to write the whole pass (or worse a whole compiler)
from scratch; is there any public domain compiler out, that I could easily
use to make my implementation ? Ideally, I'd take a beast that already
implements region scheduling to have a basis for comparison, but I'll
appreciate any pointers.


If there's sufficient interest (and answers), I'd post the results.


Thanks


Wolfgang Diestelkamp
wd@cs.tu-berlin.de
wolfgang@first.gmd.de
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