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[Bug tree-optimization/15524] [4.0 Regression] jump threading on trees is slow with switch statements with large # of cases
- 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: 18 Sep 2004 00:23:51 -0000
- Subject: [Bug tree-optimization/15524] [4.0 Regression] jump threading on trees is slow with switch statements with large # of cases
- References: <20040518194300.15524.pinskia@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From steven at gcc dot gnu dot org 2004-09-18 00:23 -------
For the test case in this PR, this patch definitely helps a lot.
For more realistic code, another bottleneck in DOM means there
really isn't a significant difference (though there is of course
still a good speedup, but it's insignificant compared to the
total compile time).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15524