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From: "hjl dot tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code
Date: Tue, 04 Nov 2008 19:37:00 -0000 [thread overview]
Message-ID: <20081104193609.811.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37948-682@http.gcc.gnu.org/bugzilla/>
------- Comment #7 from hjl dot tools at gmail dot com 2008-11-04 19:36 -------
IRA generates much slower codes:
[hjl@gnu-6 37364]$ make
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -O2 -m32 -fno-ira -o noira
foo.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -O2 -m32 -o ira foo.c
time ./noira
7.62user 0.01system 0:07.65elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+88minor)pagefaults 0swaps
time ./ira
7.81user 0.01system 0:07.83elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+87minor)pagefaults 0swaps
[hjl@gnu-6 37364]$ make
time ./noira
7.07user 0.01system 0:07.10elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+88minor)pagefaults 0swaps
time ./ira
7.96user 0.00system 0:07.97elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+87minor)pagefaults 0swaps
[hjl@gnu-6 37364]$ make
time ./noira
7.40user 0.00system 0:07.40elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+87minor)pagefaults 0swaps
time ./ira
7.81user 0.00system 0:07.82elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+87minor)pagefaults 0swaps
[hjl@gnu-6 37364]$
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.4 Regression] IRA |[4.4 Regression] IRA
|generates slower code for - |generates slower code
|mtune=core2 |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948
next prev parent reply other threads:[~2008-11-04 19:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-29 5:39 [Bug rtl-optimization/37948] New: [4.4 Regression] IRA generates slower code for -mtune=core2 hjl dot tools at gmail dot com
2008-10-29 5:46 ` [Bug rtl-optimization/37948] " hjl dot tools at gmail dot com
2008-10-29 7:18 ` bonzini at gnu dot org
2008-10-29 7:25 ` Andrew Thomas Pinski
2008-10-29 7:26 ` pinskia at gmail dot com
2008-10-29 13:08 ` hjl dot tools at gmail dot com
2008-10-29 14:50 ` rguenth at gcc dot gnu dot org
2008-10-30 21:08 ` rguenth at gcc dot gnu dot org
2008-10-30 22:53 ` hjl dot tools at gmail dot com
2008-11-04 19:37 ` hjl dot tools at gmail dot com [this message]
2008-11-10 16:13 ` [Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code vmakarov at redhat dot com
2008-11-10 23:24 ` vmakarov at gcc dot gnu dot org
2008-11-11 0:02 ` hjl at gcc dot gnu dot org
2008-12-06 22:07 ` steven at gcc dot gnu dot org
2008-12-10 3:03 ` Joey dot ye at intel dot com
2008-12-10 5:04 ` hjl dot tools at gmail dot com
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