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Calling life_analysis from other optimizers (i.e. VRP)
- To: gcc at gcc dot gnu dot org
- Subject: Calling life_analysis from other optimizers (i.e. VRP)
- From: John Wehle <john at feith dot com>
- Date: Mon, 19 Jun 2000 01:19:18 -0400 (EDT)
It would be nice if VRP could use global_live_at_start to determine
if it should bother propagating value range information for a given
register. This would (among other things) cut down on the amount
of memory used by VRP. Any problem with VRP calling:
life_analysis (get_insns (), NULL, PROP_KILL_DEAD_CODE | PROP_SCAN_DEAD_CODE);
before starting its main loop? Any other thoughts / suggestions?
-- John
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