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From: "steven at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP Date: Sun, 16 Oct 2005 23:20:00 -0000 [thread overview] Message-ID: <20051016232030.16721.qmail@sourceware.org> (raw) In-Reply-To: <bug-19097-7737@http.gcc.gnu.org/bugzilla/> ------- Comment #17 from steven at gcc dot gnu dot org 2005-10-16 23:20 ------- On AMD64, I now get the following timings: -O1 -O2 3.3 (profilebootstrapped) 46.64 46.90 4.1 (checking=release) 72.82 156.43 In 4.1, the Big Spenders are "dominance frontiers" (41% usr) and "tree operand scan" (also 41%) for -O1. For -O2 those two also are big time black holes, and the 3 gcse.c CPROP passes join them at the top of the profile ("dominance frontiers" 18%, "tree operand scan" 18%, "CPROP 1" 17%, "CPROP 2" 9%, "bypass jumps" 10%). So this is still a regression from GCC 3.3. -- steven at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Known to fail|4.0.0 |4.0.0 4.1.0 Last reconfirmed|2005-10-16 22:35:50 |2005-10-16 23:20:30 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097
next parent reply other threads:[~2005-10-16 23:20 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-19097-7737@http.gcc.gnu.org/bugzilla/> 2005-10-16 23:20 ` steven at gcc dot gnu dot org [this message] 2005-10-18 8:36 ` bonzini at gcc dot gnu dot org 2005-10-18 12:25 ` amacleod at redhat dot com 2005-10-29 22:38 ` steven at gcc dot gnu dot org 2005-10-31 2:02 ` mmitchel at gcc dot gnu dot org 2005-10-31 13:33 ` amacleod at redhat dot com 2005-10-31 14:41 ` amacleod at redhat dot com 2005-10-31 15:04 ` dberlin at gcc dot gnu dot org 2005-10-31 15:19 ` amacleod at gcc dot gnu dot org 2005-10-31 17:12 ` steven at gcc dot gnu dot org 2005-11-08 0:18 ` steven at gcc dot gnu dot org 2005-11-08 6:48 ` phython at gcc dot gnu dot org 2006-01-08 16:02 ` [Bug rtl-optimization/19097] [3.4/4.0/4.1/4.2 " steven at gcc dot gnu dot org 2006-01-08 16:08 ` steven at gcc dot gnu dot org 2006-01-08 16:14 ` steven at gcc dot gnu dot org 2006-01-08 18:16 ` steven at gcc dot gnu dot org 2006-01-08 18:32 ` steven at gcc dot gnu dot org 2006-01-08 18:40 ` steven at gcc dot gnu dot org 2006-01-09 22:26 ` [Bug rtl-optimization/19097] [4.1/4.2 regression] Quadratic behavior with many sets for the same register in VRP steven at gcc dot gnu dot org 2006-02-05 21:37 ` steven at gcc dot gnu dot org 2006-02-05 22:47 ` steven at gcc dot gnu dot org 2006-02-24 0:26 ` mmitchel at gcc dot gnu dot org 2006-05-25 2:38 ` mmitchel at gcc dot gnu dot org 2006-08-24 20:50 ` amylaar at gcc dot gnu dot org 2006-10-10 11:19 ` [Bug tree-optimization/19097] " rguenth at gcc dot gnu dot org 2007-02-14 9:04 ` [Bug tree-optimization/19097] [4.1/4.2/4.3 " mmitchel at gcc dot gnu dot org 2007-09-17 13:11 ` rguenth at gcc dot gnu dot org 2007-11-09 22:08 ` steven at gcc dot gnu dot org 2007-11-11 5:17 ` sebpop at gmail dot com 2007-11-11 9:24 ` stevenb dot gcc at gmail dot com 2007-11-11 12:17 ` rguenth at gcc dot gnu dot org 2007-12-18 13:47 ` steven at gcc dot gnu dot org 2008-01-23 9:12 ` steven at gcc dot gnu dot org 2008-01-23 10:31 ` rguenth at gcc dot gnu dot org 2008-07-04 16:48 ` [Bug tree-optimization/19097] [4.2/4.3/4.4 " jsm28 at gcc dot gnu dot org 2009-03-31 16:43 ` [Bug tree-optimization/19097] [4.3/4.4/4.5 " jsm28 at gcc dot gnu dot org 2009-08-04 12:28 ` rguenth at gcc dot gnu dot org 2009-12-24 13:03 ` steven at gcc dot gnu dot org 2004-12-21 1:57 [Bug rtl-optimization/19097] New: Lots of else ifs take forever to compile phython at gcc dot gnu dot org 2005-03-05 19:53 ` [Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP pinskia at gcc dot gnu dot org 2005-03-05 23:37 ` steven at gcc dot gnu dot org 2005-06-08 3:32 ` phython at gcc dot gnu dot org 2005-06-08 9:38 ` steven at gcc dot gnu dot org 2005-06-08 12:44 ` phython at gcc dot gnu dot org 2005-08-23 7:29 ` phython at gcc dot gnu dot org 2005-08-25 5:44 ` phython at gcc dot gnu dot org 2005-08-25 6:40 ` phython at gcc dot gnu dot org 2005-08-25 7:06 ` phython at gcc dot gnu dot org 2005-09-19 0:14 ` pinskia at gcc dot gnu dot org 2005-09-19 0:15 ` steven at gcc dot gnu dot org 2005-09-30 14:43 ` amacleod at redhat dot com
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