[Bug middle-end/34400] [4.3 regression] bad interaction between DF and SJLJ exceptions

[steven 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.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34400