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From: "bugdal at aerifal dot cx" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/14412] Removal of sysdeps/x86_64/fpu/s_sincos.S causes regressions
Date: Fri, 26 Apr 2013 00:14:00 -0000 [thread overview]
Message-ID: <bug-14412-131-kZYBkuzYkg@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-14412-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=14412
--- Comment #12 from Rich Felker <bugdal at aerifal dot cx> 2013-04-26 00:14:13 UTC ---
Sorry, I see that you did acknowledge that already. I just skimmed through the
code but I'm not familiar enough with out glibc's math library is laid out to
figure out where feraiseexcept is getting called from... Once it's found,
fixing the problem should just be a matter of replacing the call with code that
would generate the exception naturally. However since the only exception that
should be needed is the inexact exception, it should already be getting raised
by the code to compute sin/cos.
A quick test to see if this is the source of the problem would be to make a
no-op implementation of feraiseexcept and link it in (might need to use static
linking to get libm to use it) then measure the performance.
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next prev parent reply other threads:[~2013-04-26 0:14 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-26 21:08 [Bug math/14412] New: Removal of sysdeps/x86_64/fpu/s_sincos.S causes pdf rendering time regression markus at trippelsdorf dot de
2012-07-26 21:09 ` [Bug math/14412] " markus at trippelsdorf dot de
2012-07-26 21:14 ` markus at trippelsdorf dot de
2012-07-27 6:44 ` aj at suse dot de
2012-07-27 7:18 ` markus at trippelsdorf dot de
2012-07-27 12:33 ` markus at trippelsdorf dot de
2012-07-28 22:15 ` bugdal at aerifal dot cx
2012-08-03 3:51 ` carlos_odonell at mentor dot com
2012-08-09 10:14 ` markus at trippelsdorf dot de
2012-08-19 9:31 ` markus at trippelsdorf dot de
2012-08-19 9:37 ` [Bug math/14412] Removal of sysdeps/x86_64/fpu/s_sincos.S causes regressions markus at trippelsdorf dot de
2012-12-03 22:13 ` davem at davemloft dot net
2012-12-04 0:00 ` carlos at systemhalted dot org
2013-04-25 21:48 ` wbrana at gmail dot com
2013-04-25 23:35 ` carlos at redhat dot com
2013-04-25 23:58 ` bugdal at aerifal dot cx
2013-04-26 0:14 ` bugdal at aerifal dot cx [this message]
2013-04-26 2:55 ` siddhesh at redhat dot com
2013-04-26 3:08 ` bugdal at aerifal dot cx
2013-04-26 3:50 ` siddhesh at redhat dot com
2013-04-26 6:29 ` markus at trippelsdorf dot de
2013-04-26 6:40 ` jakub at redhat dot com
2013-04-26 10:00 ` siddhesh at redhat dot com
2013-04-26 11:31 ` joseph at codesourcery dot com
2013-04-26 11:33 ` joseph at codesourcery dot com
2013-04-26 11:42 ` siddhesh at redhat dot com
2013-04-26 13:52 ` bugdal at aerifal dot cx
2013-04-26 13:55 ` bugdal at aerifal dot cx
2013-04-26 15:07 ` joseph at codesourcery dot com
2013-04-26 15:20 ` wbrana at gmail dot com
2013-04-29 10:29 ` siddhesh at redhat dot com
2013-04-29 10:50 ` wbrana at gmail dot com
2013-04-29 11:55 ` bugdal at aerifal dot cx
2013-04-29 12:32 ` wbrana at gmail dot com
2013-04-29 13:21 ` Ondřej Bílka
2013-04-29 13:21 ` neleai at seznam dot cz
2013-04-29 13:28 ` bugdal at aerifal dot cx
2013-04-29 14:04 ` Ondřej Bílka
2013-04-29 13:32 ` bugdal at aerifal dot cx
2013-04-29 13:36 ` wbrana at gmail dot com
2013-04-29 13:44 ` siddhesh at redhat dot com
2013-04-29 13:51 ` bugdal at aerifal dot cx
2013-04-29 14:04 ` neleai at seznam dot cz
2013-04-29 14:19 ` siddhesh at redhat dot com
2013-04-29 14:29 ` markus at trippelsdorf dot de
2013-04-29 14:48 ` bugdal at aerifal dot cx
2013-04-29 16:29 ` Ondřej Bílka
2013-04-29 16:29 ` neleai at seznam dot cz
2013-04-29 17:30 ` bugdal at aerifal dot cx
2013-04-29 20:58 ` joseph at codesourcery dot com
2013-04-30 5:41 ` siddhesh at redhat dot com
2013-04-30 21:37 ` bugdal at aerifal dot cx
2013-05-01 22:25 ` bugdal at aerifal dot cx
2013-07-16 20:08 ` nshmyrev at yandex dot ru
2013-09-07 6:55 ` carlos at redhat dot com
2014-02-06 18:31 ` jsm28 at gcc dot gnu.org
2014-06-17 18:55 ` fweimer at redhat dot com
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