Slava Pestov 5f4b247072 Propagation pass now uses a stack of hashtables for predicated constraints instead of cloning a hashtable. New strategy for recursive propagation; now converges with fewer iterations. ~15 sec bootstrap time improvement		2008-11-11 08:49:00 -06:00
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constraints.factor	Propagation pass now uses a stack of hashtables for predicated constraints instead of cloning a hashtable. New strategy for recursive propagation; now converges with fewer iterations. ~15 sec bootstrap time improvement	2008-11-11 08:49:00 -06:00