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[Bug target/27855] reassociation pass produces ~30% slower matrix multiplication code
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Jun 2006 15:26:16 -0000
- Subject: [Bug target/27855] reassociation pass produces ~30% slower matrix multiplication code
- References: <bug-27855-1649@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from pinskia at gcc dot gnu dot org 2006-06-01 15:26 -------
There is nothing special about reassociation at all. In fact what you are
seeing is register allocator going funky. This what you get with x87.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
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Component|tree-optimization |target
Keywords| |ra
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27855