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[Bug middle-end/34400] [4.3 regression] bad interaction between DF and SJLJ exceptions
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 Dec 2007 00:29:02 -0000
- Subject: [Bug middle-end/34400] [4.3 regression] bad interaction between DF and SJLJ exceptions
- References: <bug-34400-286@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #25 from steven at gcc dot gnu dot org 2007-12-15 00:29 -------
Created an attachment (id=14760)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14760&action=view)
hybrid search, resurrected
This new test case looks even worse for the typical work list algorithm, so I
had the idea to try the hybrid search algorithm again. Seongbae resurrected it
and I have tried it on the new test case. We still have large call overhead,
but it does cut time down even further.
Integrating it properly requires finding a heuristic to decide which solver to
use, depending on properties of the CFG.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34400