From: Paolo Bonzini <bonzini@gnu.org>
To: gcc-patches@gcc.gnu.org
Cc: gcc@gcc.gnu.org
Subject: Re: Designs for better debug info in GCC
Date: Thu, 08 Nov 2007 08:58:00 -0000 [thread overview]
Message-ID: <fguj33$2r1$1@ger.gmane.org> (raw)
In-Reply-To: <m3mytpr7fr.fsf@localhost.localdomain>
> What standards are you talking about? I'm not aware of any standard
> for debuggability of optimized code.
As a developer of gcc, it would be *invaluable* in debugging for example
bootstrap comparison failures. There I have to debug side-by-side the
stage1 and the stage2 compiler, and no way I can compile the latter
unoptimized...
As a user more than a developer of gcc this days, definitely yes. I
often have programs that run for say 1 minute, and I *know* the bug
comes up after 50 seconds. It's already unnerving enough to debug
programs like this (I often start ten gdbs at the same time, launch them
to the magic point while I'm taking a coffee, and go back working!); and
it's only worse if you're doing it on -O0 binaries that take 5 minutes
to reach the point you're trying to debug.
Backward debugging would also be a possibility for me, much more
productive than debuggability of optimized code, but since backward
debugging is pie-in-the-sky, debuggability of optimized code is also good.
Paolo
next prev parent reply other threads:[~2007-11-08 8:58 UTC|newest]
Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-05 8:28 [vta] don't let debug insns get in the way of simple vect reduction Alexandre Oliva
2007-11-05 11:27 ` Richard Guenther
2007-11-07 7:52 ` Designs for better debug info in GCC (was: Re: [vta] don't let debug insns get in the way of simple vect reduction) Alexandre Oliva
2007-11-07 16:16 ` Ian Lance Taylor
2007-11-07 19:11 ` Designs for better debug info in GCC Alexandre Oliva
2007-11-07 22:57 ` Ian Lance Taylor
2007-11-07 23:05 ` Daniel Jacobowitz
2007-11-08 0:00 ` Mark Mitchell
2007-11-08 0:15 ` David Edelsohn
2007-11-08 0:35 ` Mark Mitchell
2007-11-08 5:14 ` Alexandre Oliva
2007-11-08 18:28 ` Alexandre Oliva
2007-11-22 23:07 ` Frank Ch. Eigler
2007-11-22 23:13 ` Richard Guenther
2007-11-23 20:53 ` Frank Ch. Eigler
2007-11-24 1:53 ` Alexandre Oliva
2007-11-24 15:02 ` Robert Dewar
2007-11-08 5:15 ` Alexandre Oliva
2007-11-08 18:18 ` Alexandre Oliva
2007-11-08 19:46 ` Andrew Pinski
2007-11-08 20:39 ` Alexandre Oliva
2007-11-09 8:39 ` Robert Dewar
2007-11-08 5:44 ` Alexandre Oliva
2007-11-08 18:37 ` Alexandre Oliva
2007-11-08 19:13 ` Mark Mitchell
2007-11-08 19:13 ` David Daney
2007-11-08 19:17 ` Mark Mitchell
2007-11-09 2:09 ` Alexandre Oliva
2007-11-12 4:49 ` Mark Mitchell
2007-11-12 18:45 ` Alexandre Oliva
2007-11-12 18:49 ` Joe Buck
2007-11-25 6:57 ` Alexandre Oliva
2007-11-25 12:09 ` Richard Kenner
2007-11-12 18:53 ` Ian Lance Taylor
2007-11-24 2:12 ` Alexandre Oliva
2007-11-13 10:30 ` Mark Mitchell
2007-11-24 1:54 ` Alexandre Oliva
2007-11-13 15:30 ` Michael Matz
2007-11-24 2:00 ` Alexandre Oliva
2007-11-26 21:01 ` Michael Matz
2007-11-27 5:31 ` Alexandre Oliva
2007-11-27 20:31 ` Michael Matz
2007-11-27 21:44 ` Alexandre Oliva
2007-11-08 9:54 ` Richard Guenther
2007-11-08 5:01 ` Alexandre Oliva
2007-11-08 18:15 ` Alexandre Oliva
2007-11-08 19:13 ` Ian Lance Taylor
2007-11-08 20:27 ` Alexandre Oliva
2007-11-08 21:26 ` Ian Lance Taylor
2007-11-09 9:53 ` Robert Dewar
2007-11-12 5:36 ` Mark Mitchell
2007-11-12 17:34 ` Alexandre Oliva
2007-11-12 17:54 ` Mark Mitchell
2007-11-24 1:55 ` Alexandre Oliva
2007-11-26 1:08 ` Mark Mitchell
2007-12-05 14:22 ` Diego Novillo
2007-12-05 22:10 ` Joe Buck
2007-12-15 21:41 ` Alexandre Oliva
2007-12-16 3:15 ` Daniel Berlin
2007-12-16 13:09 ` Alexandre Oliva
2007-12-17 1:27 ` Daniel Berlin
2007-12-17 4:20 ` Joe Buck
2007-12-17 8:13 ` Geert Bosch
2007-12-18 1:24 ` Alexandre Oliva
2007-12-18 1:29 ` Joe Buck
2007-12-18 4:40 ` Alexandre Oliva
2007-12-18 7:42 ` Robert Dewar
2007-12-18 8:09 ` Alexandre Oliva
2007-12-18 14:01 ` Robert Dewar
2007-12-18 21:20 ` Alexandre Oliva
2007-12-18 7:35 ` Robert Dewar
2007-12-18 8:34 ` Alexandre Oliva
2007-12-17 18:36 ` Alexandre Oliva
2007-12-17 17:59 ` Alexandre Oliva
2007-12-17 18:02 ` Diego Novillo
2007-12-17 20:34 ` Alexandre Oliva
2007-12-17 20:45 ` Diego Novillo
2007-12-18 1:02 ` Alexandre Oliva
2007-12-18 1:14 ` Diego Novillo
2007-12-18 5:21 ` Alexandre Oliva
2007-12-18 9:10 ` Alexandre Oliva
2007-12-18 13:20 ` Diego Novillo
2007-12-18 15:42 ` Alexandre Oliva
2007-12-18 22:43 ` Daniel Berlin
2007-12-19 6:07 ` Alexandre Oliva
2007-12-19 8:39 ` Daniel Berlin
2007-12-19 16:12 ` Daniel Berlin
2007-12-19 16:36 ` Andrew MacLeod
2007-12-19 19:49 ` Daniel Berlin
2007-12-19 20:00 ` Andrew MacLeod
2007-12-19 20:57 ` Daniel Berlin
2007-12-19 20:07 ` Alexandre Oliva
2007-12-19 22:00 ` Daniel Berlin
2007-12-20 9:26 ` Alexandre Oliva
2007-12-20 17:04 ` Ian Lance Taylor
2007-12-20 20:53 ` Alexandre Oliva
2007-12-19 20:27 ` Alexandre Oliva
2007-12-18 23:35 ` Daniel Berlin
2007-12-19 5:50 ` Alexandre Oliva
2007-12-19 16:35 ` Daniel Berlin
2007-12-19 19:46 ` Alexandre Oliva
2007-12-19 20:39 ` Daniel Jacobowitz
2007-12-31 15:40 ` Richard Guenther
2007-12-16 21:42 ` Mark Mitchell
2007-11-09 9:55 ` Seongbae Park (박성배, 朴成培)
2007-11-09 11:08 ` Robert Dewar
2007-11-08 8:58 ` Paolo Bonzini [this message]
2007-11-07 17:20 ` Designs for better debug info in GCC (was: Re: [vta] don't let debug insns get in the way of simple vect reduction) Michael Matz
2007-11-07 18:45 ` Designs for better debug info in GCC Alexandre Oliva
2007-11-08 10:23 ` Michael Matz
2007-11-08 14:02 ` Robert Dewar
2007-11-08 15:13 ` H.J. Lu
2007-11-08 16:11 ` Michael Matz
2007-11-08 17:48 ` Alexandre Oliva
2007-11-09 12:46 ` Michael Matz
2007-11-12 18:31 ` Alexandre Oliva
2007-11-13 13:56 ` Michael Matz
2007-11-24 2:34 ` Alexandre Oliva
2007-11-26 20:56 ` Michael Matz
2007-11-27 5:30 ` Alexandre Oliva
2007-11-08 16:37 ` Alexandre Oliva
2007-11-09 1:26 ` Joe Buck
2007-11-09 14:53 ` Daniel Jacobowitz
2007-11-09 17:06 ` Robert Dewar
2007-11-09 1:26 ` Robert Dewar
2007-11-12 16:56 ` Alexandre Oliva
2007-11-08 16:32 ` Alexandre Oliva
2007-11-12 21:04 Steven Bosscher
2007-11-24 1:37 ` Alexandre Oliva
2007-11-24 2:35 ` Steven Bosscher
2007-11-24 15:08 ` Alexandre Oliva
2007-11-24 15:18 ` Richard Kenner
2007-11-24 20:11 ` Alexandre Oliva
2007-11-24 20:46 ` Bernd Schmidt
2007-11-25 0:42 ` Alexandre Oliva
2007-11-25 7:19 ` Richard Guenther
2007-11-25 14:30 ` Alexandre Oliva
2007-11-25 14:46 ` Richard Guenther
2007-11-26 10:11 ` Alexandre Oliva
2007-11-26 12:26 ` Richard Guenther
2007-11-26 18:58 ` Alexandre Oliva
2007-11-25 14:22 ` Alexandre Oliva
2007-11-24 20:48 ` Richard Kenner
2007-11-25 0:02 ` Alexandre Oliva
2007-11-25 14:23 ` Robert Dewar
2007-12-15 20:32 ` Alexandre Oliva
2007-12-15 21:41 ` Robert Dewar
2007-11-24 16:45 ` Steven Bosscher
2007-11-24 18:50 ` Alexandre Oliva
2007-11-24 20:21 ` Richard Guenther
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