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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: 23 Dec 2004 13:31:04 -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 2004-12-23 13:31 -------
Jeff, as I said, you're attacking problems not related to the original
problem reported in this PR. Maybe you don't use bugzilla often enough
to see how annoying it is when the PR summary and the problem described
in the bug report don't match. But oh well, whatever, if you can win
10% here, why am I complaining ;-)
I'm very curious about your tree alias rewrite. Got a plan/overview of
it somewhere? Is it GCC 4.0 material?
Relation to this PR: Last time I looked, ~40% of the RTL jump threads
were related to more accurate alias info (components!) on the RTL level.
--
What |Removed |Added
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Last reconfirmed|2004-12-22 19:18:03 |2004-12-23 13:31:01
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15524