factor

Author	SHA1	Message	Date
Slava Pestov	7fc13ef03c	dlists no longer have a length slot; tweak dlist code so that types infer better	2008-11-16 05:53:25 -06:00
Slava Pestov	d4134a2ca1	Fix loop detection bug	2008-10-02 01:17:45 -05:00
Slava Pestov	40da49bef5	Perform loop detection before normalization, clean up normalization pass, more aggressive recursive return value propagation. Fixes regression on nsieve benchmark	2008-09-12 05:17:27 -05:00