From: Jevgeni Fraidenberger <jfraiden@welho.org>
To: gentoo-user-ru@lists.gentoo.org
Subject: Re: [gentoo-user-ru] �
Date: Mon, 23 Jan 2006 00:09:03 +0200 [thread overview]
Message-ID: <43D4027F.8060101@welho.org> (raw)
In-Reply-To: <1137960091.17883.10.camel@localhost>
:) Здравствуйте. Я и правда без имоций :)
C -pipe я дружу, а -fomit-frame-pointer .... глупо может, но он мне не
ясен :)
Peter Volkov (pva) пишет:
> On Вск, 2006-01-22 at 23:47 +0200, Jevgeni Fraidenberger wrote:
>
>>:) Добавить или вместо -fomit-frame-pointer ????
>
>
> Хм. Это уже второе эмоциональное письмо, но при этом совсем не ясно: А
> чем вас так смущает этот флаг?
>
> info gcc:
>
> `-fomit-frame-pointer'
> Don't keep the frame pointer in a register for functions that
> don't need one. This avoids the instructions to save, set up and
> restore frame pointers; it also makes an extra register available
> in many functions. *It also makes debugging impossible on some
> machines.*
>
> On some machines, such as the VAX, this flag has no effect, because
> the standard calling sequence automatically handles the frame
> pointer and nothing is saved by pretending it doesn't exist. The
> machine-description macro `FRAME_POINTER_REQUIRED' controls
> whether a target machine supports this flag. *Note Register
> Usage: (gccint)Registers.
>
> Enabled at levels `-O', `-O2', `-O3', `-Os'.
>
> Надо заметить, что для x86 этот флаг иммет смысл, так как он не включён
> на уровнях -O* так как влияет на отладку. Поэтому если хотите делать с
> дебугером поиграть, то нужно убрать файл. Во всех остальных случаях это
> даёт небольшой прирост в производительности.
>
> Peter.
--
Jevgeni Fraidenberger
@-mail: jfraiden@welho.org
ICQ: 237351343
--
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next prev parent reply other threads:[~2006-01-22 20:21 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-21 23:40 [gentoo-user-ru] Тишина Jevgeni Fraidenberger
2006-01-22 5:25 ` Vishnevsky Roman
2006-01-22 9:41 ` Alex P. Burlutsky
2006-01-22 10:02 ` Jevgeni Fraidenberger
2006-01-22 13:55 ` [gentoo-user-ru] Тишина / HELP artsd не запускается! :( Dmitry Rys
2006-01-22 14:20 ` Peter Volkov (pva)
2006-01-22 18:05 ` [gentoo-user-ru] ��( Dmitry Rys
2006-01-22 18:48 ` [gentoo-user-ru] Тишина / HELP artsd не запускается! :( Peter Volkov (pva)
2006-01-22 19:06 ` [gentoo-user-ru] ��( Dmitry Rys
2006-01-22 19:10 ` Gleb Litvjak
2006-01-22 19:35 ` Dmitry Rys
2006-01-22 19:15 ` Peter Volkov (pva)
2006-01-24 20:06 ` [gentoo-user-ru] Тишина / HELP artsd не запускается! :( Dmitry Rys
2006-01-22 19:42 ` [gentoo-user-ru] немножко OT Peter Volkov (pva)
2006-01-22 21:47 ` [gentoo-user-ru] � Jevgeni Fraidenberger
2006-01-22 20:01 ` Peter Volkov (pva)
2006-01-22 22:09 ` Jevgeni Fraidenberger [this message]
2006-01-22 21:23 ` [gentoo-user-ru] ��( Jevgeni Fraidenberger
2006-01-22 14:33 ` [gentoo-user-ru] Тишина / HELP artsd не запускается! :( Gleb Litvjak
2006-01-22 14:44 ` Peter Volkov (pva)
2006-01-22 17:11 ` Vladimir Rusinov
2006-01-22 19:07 ` Peter Volkov (pva)
2006-01-22 20:09 ` Vladimir Rusinov
2006-01-22 19:11 ` Gleb Litvjak
2006-01-22 19:25 ` Konstantin V. Arkhipov
-- strict thread matches above, loose matches on Subject: below --
2014-10-31 6:42 [gentoo-user-ru] Алексей Смирнов
2014-10-28 16:20 [gentoo-user-ru] Yu D
2011-03-01 12:10 [gentoo-user-ru] Mikola Kastryca
2010-07-12 15:27 [gentoo-user-ru] Andrian Nord
2010-07-12 16:34 ` [gentoo-user-ru] Александр Черников
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2009-06-02 14:50 ` [gentoo-user-ru] Edward Hades
2009-06-04 7:25 ` [gentoo-user-ru] John Brezerk
2009-06-04 11:55 ` [gentoo-user-ru] Anton Kochnev
2009-06-10 19:39 ` [gentoo-user-ru] Andrew N Golovkov
2009-06-11 5:40 ` [gentoo-user-ru] John Brezerk
2007-07-03 20:04 [gentoo-user-ru] Dubinin Alexey
2007-07-03 20:03 [gentoo-user-ru] Dubinin Alexey
2007-07-11 3:30 ` [gentoo-user-ru] Дмитрий Куликов
2007-02-07 20:56 [gentoo-user-ru] Константин
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2006-10-24 10:47 ` [gentoo-user-ru] ðÏÄÓËÁÖÉÔÅ ÎÏ×ÉÞËÕ Vladimir Solomatin
2006-10-24 11:09 ` Vladimir Solomatin
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2006-08-30 7:31 ` [gentoo-user-ru] Ilya Hegai
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2006-07-25 4:46 ` Anatoly Shipitsin
2006-07-25 11:22 ` Mad Deer
2006-07-25 13:33 ` Peter Volkov (pva)
2006-07-25 18:23 ` Mad Deer
2006-07-26 17:27 ` Mad Deer
2006-07-27 6:12 ` [gentoo-user-ru] Ð½ÐµÑ Ð¿Ð°ÑÑиÑий Vladimir Solomatin
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2006-07-11 11:47 ` [gentoo-user-ru] Gleb Litvjak
2006-07-11 20:01 ` [gentoo-user-ru] billgates
2006-07-14 6:11 ` [gentoo-user-ru] Kovalenko Oleg
2006-07-14 6:45 ` [gentoo-user-ru] Anton Ananich
2006-07-14 6:56 ` [gentoo-user-ru] Kovalenko Oleg
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2006-06-28 8:56 ` [gentoo-user-ru] sl
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2005-11-29 14:04 ` [gentoo-user-ru] ������������� ����� �� ����� ��� � ���� Alexander Tratsevsky
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2005-11-29 14:13 ` Alexander Tratsevsky
2005-11-29 14:18 ` [gentoo-user-ru] ������ ���� ������ �� Antonio
2005-11-29 14:42 ` Alexander Tratsevsky
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2005-11-29 15:15 ` [gentoo-user-ru] Antonio
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2005-11-23 14:46 ` [gentoo-user-ru] Vladimir Jakubovskij
2005-11-23 14:54 ` [gentoo-user-ru] Vladimir Jakubovskij
2005-11-23 15:25 ` [gentoo-user-ru] Александр Жолтковский
2005-11-23 15:58 ` [gentoo-user-ru] Mad Deer
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2005-10-30 18:24 ` koresh
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2005-10-30 19:29 ` [gentoo-user-ru] Antonio
2005-10-30 19:37 ` [gentoo-user-ru] Gleb Litvjak
2005-10-30 19:42 ` [gentoo-user-ru] koresh
2005-10-30 19:34 ` [gentoo-user-ru] koresh
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