factor

Author	SHA1	Message	Date
Slava Pestov	5d9f7b0ed2	compiler.cfg: Major restructuring -- do not compute liveness before local optimization, and instead change local optimizations to be more permissive of undefined values. Now, liveness is only computed once, after phi elimination and before register allocation. This means liveness analysis does not need to take phi nodes into account and can now use the new compiler.cfg.dataflow-analysis framework	2009-07-22 03:08:28 -05:00
Slava Pestov	89a048c0ac	compiler.cfg.dataflow-analysis: iterative dataflow analysis framework	2009-07-22 02:06:35 -05:00