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From: Dmitry Antipov <dmantipov@yandex.ru>
To: Stefan Monnier <monnier@iro.umontreal.ca>,
	Paul Eggert <eggert@cs.ucla.edu>
Cc: Manoj Srivastava <srivasta@golden-gryphon.com>, 17806@debbugs.gnu.org
Subject: bug#17806: 24.4.50; Branch emacs-24 fails to beuild on Debian
Date: Sat, 21 Jun 2014 07:46:10 +0400	[thread overview]
Message-ID: <53A50002.3070705@yandex.ru> (raw)
In-Reply-To: <jwvoaxnmgx8.fsf-monnier+emacsbugs@gnu.org>

On 06/21/2014 01:06 AM, Stefan Monnier wrote:

> If it tends to break (and since IIUC it's new in 24.4), we could also
> remove it from 24.4.

Well, this is considered experimental and known for its controversial results
(for example, see http://www.phoronix.com/scan.php?page=news_item&px=MTI5ODE).
I didn't make representative benchmarks; as for the crashes, code compiled with
'-O2 -flto' looks more stable than '-O3 -march=native -mtune=native' (YMMV).

After all, --enable-link-time-optimization is not enabled by default (and never
should be), users aren't enforced to enable it - so I don't see a problem here;
INSTALL may warn about potentially unstable results of using this option.

Dmitry






  parent reply	other threads:[~2014-06-21  3:46 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-18 22:37 bug#17806: 24.4.50; Branch emacs-24 fails to beuild on Debian Manoj Srivastava
2014-06-19  2:56 ` Eli Zaretskii
2014-06-19  3:41   ` Glenn Morris
2014-06-19  6:35     ` Manoj Srivastava
2014-06-19  8:42       ` Dmitry Antipov
2014-06-19 17:22         ` Manoj Srivastava
2014-06-19 18:39           ` Sven Joachim
2014-06-20  6:17 ` Paul Eggert
2014-06-20  7:20   ` Eli Zaretskii
2014-06-20  7:56     ` Paul Eggert
2014-06-20  8:15       ` Eli Zaretskii
2014-06-20 17:15   ` Glenn Morris
2014-06-20 19:48     ` Paul Eggert
2014-06-20 21:06       ` Stefan Monnier
2014-06-20 23:55         ` Paul Eggert
2014-06-21 12:54           ` Stefan Monnier
2014-06-21  3:46         ` Dmitry Antipov [this message]
2014-06-21 19:58           ` Glenn Morris
2014-06-24 14:56     ` Dmitry Antipov
2014-06-24 16:27       ` Paul Eggert
2014-06-24 16:39         ` Eli Zaretskii

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