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From: "xinliangli at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/50182] Performance degradation from gcc 4.1 (x86_64)
Date: Fri, 21 Oct 2011 23:02:00 -0000 [thread overview]
Message-ID: <bug-50182-4-bP667MIf5B@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-50182-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50182
--- Comment #15 from davidxl <xinliangli at gmail dot com> 2011-10-21 23:02:16 UTC ---
(In reply to comment #14)
> (In reply to comment #13)
> > David, it looks like we are seeing different things with v4.7... See my
> > comment 11 - I am still observing the slowdown. Do you have access to
> > v4.1 and v4.6? Could you try reproducing my test please?
>
> Sorry for the delay -- I am pretty swamped these days (till mid October). I
> will try to look at the problem more then.
>
> David
I still can not reproduce the problem with trunk compiler:
rv=4282167296
test description absolute operations ratio with
number time per second test0
0 "int8_t constant add" 1.09 sec 1467.89 M 1.00
Total absolute time for int8_t constant folding: 1.09 sec
Can you attach the output of -v and the assembly file with -fverbose-asm -dA
and the optimized dump file with option -fdump-tree-optimized-blocks using
trunk compiler?
thanks,
David
next prev parent reply other threads:[~2011-10-21 23:02 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-24 21:27 [Bug c++/50182] New: " oleg.smolsky at gmail dot com
2011-08-24 22:30 ` [Bug target/50182] " oleg.smolsky at gmail dot com
2011-08-25 0:14 ` xinliangli at gmail dot com
2011-08-25 0:52 ` xinliangli at gmail dot com
2011-08-25 9:00 ` jakub at gcc dot gnu.org
2011-08-25 15:21 ` oleg.smolsky at gmail dot com
2011-08-25 15:29 ` oleg.smolsky at gmail dot com
2011-08-25 16:18 ` hjl.tools at gmail dot com
2011-08-25 16:26 ` xinliangli at gmail dot com
2011-08-25 16:49 ` oleg.smolsky at gmail dot com
2011-08-25 22:48 ` oleg.smolsky at gmail dot com
2011-08-26 7:12 ` oleg.smolsky at gmail dot com
2011-08-30 20:37 ` matt at use dot net
2011-09-15 16:57 ` oleg at smolsky dot net
2011-09-15 17:39 ` xinliangli at gmail dot com
2011-10-21 23:02 ` xinliangli at gmail dot com [this message]
2011-10-24 18:28 ` oleg at smolsky dot net
2011-10-24 18:28 ` oleg at smolsky dot net
2011-10-24 18:33 ` oleg at smolsky dot net
2011-10-24 19:34 ` xinliangli at gmail dot com
2011-10-24 19:50 ` oleg at smolsky dot net
2011-10-24 19:59 ` xinliangli at gmail dot com
2011-10-24 21:12 ` oleg at smolsky dot net
2011-10-24 23:00 ` xinliangli at gmail dot com
2011-10-24 23:03 ` xinliangli at gmail dot com
2012-01-10 18:07 ` oleg at smolsky dot net
2012-01-11 9:43 ` rguenth at gcc dot gnu.org
2012-01-11 17:27 ` xinliangli at gmail dot com
2012-03-02 0:56 ` oleg at smolsky dot net
2012-03-02 8:08 ` jakub at gcc dot gnu.org
2012-03-02 8:23 ` oleg at smolsky dot net
2012-03-02 8:29 ` jakub at gcc dot gnu.org
2012-03-02 9:14 ` jakub at gcc dot gnu.org
2012-03-03 2:20 ` oleg at smolsky dot net
2012-03-03 2:47 ` oleg at smolsky dot net
2012-03-03 3:00 ` oleg at smolsky dot net
2012-03-06 16:34 ` oleg at smolsky dot net
2012-03-06 17:27 ` jakub at gcc dot gnu.org
2012-03-06 19:40 ` oleg at smolsky dot net
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