public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug tree-optimization/18048] New: mgrid loop performance regression with ivopts
@ 2004-10-18 19:22 dje at gcc dot gnu dot org
  2004-10-18 19:24 ` [Bug tree-optimization/18048] [4.0 Regression] " pinskia at gcc dot gnu dot org
                   ` (23 more replies)
  0 siblings, 24 replies; 30+ messages in thread
From: dje at gcc dot gnu dot org @ 2004-10-18 19:22 UTC (permalink / raw)
  To: gcc-bugs

172.mgrid performance degraded after ivopts were introduced.  The patch to 
improve iv selection did not improve the performance.  This is separate from 
the register pressure problems.  The tree loop optimization appears to be 
leaving unnecessary computations in loops.

-- 
           Summary: mgrid loop performance regression with ivopts
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dje at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: *-*-*
  GCC host triplet: *-*-*
GCC target triplet: *-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18048


^ permalink raw reply	[flat|nested] 30+ messages in thread
[parent not found: <bug-18048-327@http.gcc.gnu.org/bugzilla/>]
end of thread, other threads:[~2005-11-14 10:37 UTC | newest]

Thread overview: 30+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-10-18 19:22 [Bug tree-optimization/18048] New: mgrid loop performance regression with ivopts dje at gcc dot gnu dot org
2004-10-18 19:24 ` [Bug tree-optimization/18048] [4.0 Regression] " pinskia at gcc dot gnu dot org
2004-10-19 16:46 ` matz at suse dot de
2004-10-22 17:35 ` pinskia at gcc dot gnu dot org
2004-10-22 18:39 ` dje at gcc dot gnu dot org
2004-10-22 21:16 ` rakdver at atrey dot karlin dot mff dot cuni dot cz
2004-10-27 20:27 ` cvs-commit at gcc dot gnu dot org
2004-11-27 21:17 ` neroden at gcc dot gnu dot org
2004-12-26 14:50 ` pinskia at gcc dot gnu dot org
2004-12-26 14:58 ` pinskia at gcc dot gnu dot org
2005-01-06 23:02 ` pinskia at gcc dot gnu dot org
2005-01-22 16:49 ` dberlin at gcc dot gnu dot org
2005-01-22 17:54 ` pinskia at gcc dot gnu dot org
2005-01-22 21:37 ` pinskia at gcc dot gnu dot org
2005-01-23  0:24 ` steven at gcc dot gnu dot org
2005-01-23 13:17 ` steven at gcc dot gnu dot org
2005-01-30  4:37 ` [Bug tree-optimization/18048] [4.0 Regression] mgrid loop performance regression with ivopts (register pressure) pinskia at gcc dot gnu dot org
2005-02-10 22:59 ` pinskia at gcc dot gnu dot org
2005-02-11  0:37 ` pinskia at gcc dot gnu dot org
2005-02-14 15:48 ` steven at gcc dot gnu dot org
2005-02-14 20:06 ` pinskia at gcc dot gnu dot org
2005-02-14 20:22 ` dje at gcc dot gnu dot org
2005-04-21  4:58 ` [Bug tree-optimization/18048] [4.0/4.1 " mmitchel at gcc dot gnu dot org
2005-07-08  1:34 ` mmitchel at gcc dot gnu dot org
2005-09-27 15:57 ` mmitchel at gcc dot gnu dot org
     [not found] <bug-18048-327@http.gcc.gnu.org/bugzilla/>
2005-10-17  9:27 ` steven at gcc dot gnu dot org
2005-10-31  0:41 ` mmitchel at gcc dot gnu dot org
2005-11-14  0:28 ` steven at gcc dot gnu dot org
2005-11-14  1:58 ` dje at watson dot ibm dot com
2005-11-14 10:37 ` steven at gcc dot gnu dot org

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).