From: Jakub Jelinek <jakub@redhat.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Andrew Morton <akpm@osdl.org>, Krzysztof Halasa <khc@pm.waw.pl>,
mingo@elte.hu, bunk@stusta.de, arjan@infradead.org,
tim@physik3.uni-rostock.de, davej@redhat.com,
linux-kernel@vger.kernel.org, mpm@selenic.com
Subject: Re: [patch 00/2] improve .text size on gcc 4.0 and newer compilers
Date: Mon, 2 Jan 2006 15:28:03 -0500 [thread overview]
Message-ID: <20060102202803.GJ22293@devserv.devel.redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0601021130300.3668@g5.osdl.org>
On Mon, Jan 02, 2006 at 11:41:24AM -0800, Linus Torvalds wrote:
> > Where does this certainity come from? gcc-3.x (as well as 2.x) each had
> > its own heuristics which functions should be inlined and which should not.
> > inline keyword has always been a hint.
>
> NO IT HAS NOT.
>
> This is total revisionist history by gcc people. It did not use to be a
> hint. If you asked for inlining, you got it unless there was some
> technical reason why gcc couldn't inline it (ie recursive inlining, and
> trampolines and some other issues). End of story.
One of the "technical reasons" was if the function was bigger than some
threshold. And in that case I think it is ok to speak about inline keyword
as a hint. The default inline limit (in rtx count after constant folding,
but not other optimizations) was bigger than in the GCC 3.x era, sure, but
there was a limit and GCC wasn't inlining functions bigger than that limit,
even if they could be simplified due to constant arguments to something
much smaller.
Jakub
next prev parent reply other threads:[~2006-01-02 20:29 UTC|newest]
Thread overview: 210+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-28 11:46 [patch 00/2] improve .text size on gcc 4.0 and newer compilers Ingo Molnar
2005-12-28 19:17 ` Linus Torvalds
2005-12-28 19:34 ` Arjan van de Ven
2005-12-28 21:02 ` Linus Torvalds
2005-12-28 21:17 ` Arjan van de Ven
2005-12-28 21:23 ` Ingo Molnar
2005-12-28 21:48 ` Ingo Molnar
2005-12-28 23:56 ` Krzysztof Halasa
2005-12-29 7:41 ` Ingo Molnar
2005-12-29 8:02 ` Dave Jones
2005-12-29 19:44 ` Krzysztof Halasa
2005-12-29 4:11 ` Andrew Morton
2005-12-29 7:32 ` Ingo Molnar
2005-12-29 14:58 ` Horst von Brand
2005-12-29 15:40 ` Adrian Bunk
2005-12-29 17:41 ` Linus Torvalds
2005-12-29 18:42 ` Arjan van de Ven
2005-12-29 18:45 ` Arjan van de Ven
2005-12-29 20:19 ` Ingo Molnar
2005-12-29 22:20 ` Matt Mackall
2005-12-29 20:28 ` Dave Jones
2005-12-29 20:49 ` Linus Torvalds
2005-12-29 21:25 ` Linus Torvalds
[not found] ` <20051229224839.GA12247@elte.hu>
2005-12-29 22:58 ` Arjan van de Ven
2005-12-30 2:03 ` Tim Schmielau
2005-12-30 2:15 ` Tim Schmielau
2005-12-30 7:49 ` Ingo Molnar
2005-12-31 14:38 ` Adrian Bunk
2005-12-31 14:45 ` Ingo Molnar
2005-12-31 15:08 ` Adrian Bunk
2006-01-02 10:37 ` Ingo Molnar
2006-01-02 10:48 ` Arjan van de Ven
2006-01-02 13:43 ` Adrian Bunk
2006-01-02 14:05 ` Ingo Molnar
2006-01-02 15:01 ` Adrian Bunk
2006-01-02 18:44 ` Krzysztof Halasa
2006-01-02 18:51 ` Arjan van de Ven
2006-01-02 19:49 ` Krzysztof Halasa
2006-01-02 19:54 ` Arjan van de Ven
2006-01-02 20:05 ` Krzysztof Halasa
2006-01-02 20:18 ` Jörn Engel
2006-01-02 22:23 ` Russell King
2006-01-02 23:55 ` Alan Cox
2006-01-03 3:59 ` Daniel Jacobowitz
2006-01-03 8:53 ` Russell King
2006-01-03 8:56 ` Arjan van de Ven
2006-01-03 9:00 ` Russell King
2006-01-03 9:10 ` Arjan van de Ven
2006-01-03 9:14 ` Vitaly Wool
2006-01-02 19:03 ` Andrew Morton
2006-01-02 19:17 ` Jakub Jelinek
2006-01-02 19:30 ` Andrew Morton
2006-01-02 19:41 ` Linus Torvalds
2006-01-02 19:53 ` Ingo Molnar
2006-01-02 20:28 ` Jakub Jelinek [this message]
2006-01-02 20:09 ` Ingo Molnar
2006-01-02 20:24 ` Andrew Morton
2006-01-02 20:40 ` Ingo Molnar
2006-01-02 20:30 ` Ingo Molnar
2006-01-02 19:12 ` Linus Torvalds
2006-01-02 19:59 ` Krzysztof Halasa
2006-01-02 20:13 ` Ingo Molnar
2006-01-02 21:00 ` Jan Engelhardt
2006-01-02 22:43 ` Linus Torvalds
2006-01-02 13:42 ` Adrian Bunk
2006-01-02 18:28 ` Andrew Morton
2006-01-02 18:49 ` Arjan van de Ven
2006-01-02 19:26 ` Jörn Engel
2006-01-02 21:51 ` Grant Coady
2006-01-02 22:03 ` Antonio Vargas
2006-01-02 22:56 ` Arjan van de Ven
2006-01-02 23:10 ` Grant Coady
2006-01-02 23:57 ` Alan Cox
2006-01-02 23:58 ` Grant Coady
2006-01-03 5:31 ` Nick Piggin
2006-01-03 23:40 ` Martin J. Bligh
2006-01-04 4:28 ` Matt Mackall
2006-01-04 5:51 ` Martin J. Bligh
2006-01-04 17:10 ` Matt Mackall
2006-01-04 22:37 ` Linus Torvalds
2006-01-05 0:55 ` Martin Bligh
2006-01-04 17:36 ` Zwane Mwaikambo
2005-12-31 3:51 ` Kurt Wall
2005-12-30 3:31 ` Nicolas Pitre
2005-12-29 22:41 ` userspace breakage Dave Jones
2005-12-29 21:23 ` Jeff V. Merkey
2005-12-29 23:42 ` Linus Torvalds
2005-12-29 22:17 ` Jeff V. Merkey
2005-12-30 0:10 ` Linus Torvalds
2005-12-29 23:54 ` Jeff V. Merkey
2005-12-30 0:32 ` Linus Torvalds
2005-12-30 14:45 ` Jeff V. Merkey
2005-12-30 16:17 ` Rik van Riel
2005-12-30 15:01 ` Jeff V. Merkey
2005-12-30 11:17 ` Bernd Petrovitsch
2005-12-30 14:59 ` Jeff V. Merkey
2005-12-30 20:22 ` Steven Rostedt
2005-12-30 21:26 ` Linus Torvalds
2005-12-30 23:49 ` Andrew Morton
2005-12-31 8:33 ` Arjan van de Ven
2005-12-31 15:30 ` Steven Rostedt
2005-12-31 16:40 ` Francois Romieu
2005-12-30 11:19 ` Bernd Petrovitsch
2005-12-30 14:53 ` Jeff V. Merkey
2005-12-30 17:17 ` Bernd Petrovitsch
2005-12-29 22:47 ` Ismail Donmez
2005-12-29 22:56 ` Linus Torvalds
2005-12-29 23:03 ` Dave Jones
2006-01-03 20:28 ` Greg KH
2006-01-03 20:37 ` Dave Jones
2006-01-04 23:00 ` Paolo Ciarrocchi
2006-01-05 4:42 ` Greg KH
2005-12-29 23:25 ` Adrian Bunk
2005-12-29 23:52 ` Linus Torvalds
2005-12-30 8:09 ` Arjan van de Ven
2006-01-03 20:28 ` Greg KH
2005-12-29 23:07 ` Dmitry Torokhov
2005-12-30 0:38 ` Ryan Anderson
2005-12-30 0:46 ` Dave Jones
2005-12-30 1:05 ` Linus Torvalds
2005-12-30 1:19 ` Dave Airlie
2005-12-30 1:21 ` Dave Jones
2005-12-30 2:10 ` Jiri Slaby
2005-12-30 2:14 ` Dave Jones
2005-12-30 2:35 ` Jiri Slaby
2005-12-30 5:14 ` Theodore Ts'o
2005-12-30 0:49 ` Linus Torvalds
2005-12-30 3:47 ` [patch 00/2] improve .text size on gcc 4.0 and newer compilers Mark Lord
2005-12-30 3:56 ` Dave Jones
2005-12-30 3:57 ` Mark Lord
2005-12-30 4:02 ` Dave Jones
2005-12-30 4:11 ` Mark Lord
2005-12-30 4:14 ` Mark Lord
2005-12-30 4:20 ` Mark Lord
2005-12-30 5:04 ` Dave Jones
2005-12-29 23:16 ` Willy Tarreau
2005-12-30 8:05 ` Arjan van de Ven
2005-12-30 8:15 ` Willy Tarreau
2005-12-30 8:24 ` Arjan van de Ven
2005-12-30 9:20 ` Willy Tarreau
2005-12-30 13:38 ` Adrian Bunk
2005-12-30 8:33 ` Jesper Juhl
2005-12-30 9:28 ` Willy Tarreau
2005-12-30 9:37 ` Jesper Juhl
2005-12-30 9:38 ` Willy Tarreau
2005-12-30 19:53 ` Alistair John Strachan
2005-12-29 7:49 ` Arjan van de Ven
2005-12-29 15:01 ` Horst von Brand
2005-12-30 15:28 ` Alan Cox
2005-12-30 20:59 ` Adrian Bunk
2005-12-30 22:12 ` Matt Mackall
2005-12-30 23:54 ` Adrian Bunk
2005-12-31 9:20 ` Arjan van de Ven
2005-12-29 14:38 ` Christoph Hellwig
2005-12-29 14:54 ` Arjan van de Ven
2005-12-29 15:35 ` Adrian Bunk
2005-12-29 15:38 ` Arjan van de Ven
2005-12-29 15:42 ` Jakub Jelinek
2005-12-29 19:14 ` Adrian Bunk
2005-12-30 9:28 ` Andi Kleen
2005-12-30 9:40 ` Ingo Molnar
2005-12-30 10:14 ` Ingo Molnar
2005-12-30 13:31 ` Adrian Bunk
2005-12-30 14:08 ` Christian Trefzer
2005-12-30 10:25 ` Andi Kleen
2005-12-29 0:37 ` Rogério Brito
2006-01-03 3:36 ` Daniel Jacobowitz
2005-12-29 4:38 ` Adrian Bunk
2005-12-29 7:59 ` Ingo Molnar
2005-12-29 13:52 ` Adrian Bunk
2005-12-29 19:57 ` Horst von Brand
2005-12-29 20:25 ` Ingo Molnar
2005-12-31 15:22 ` Adrian Bunk
2006-01-05 0:55 Chuck Ebbert
2006-01-05 1:07 ` Martin Bligh
2006-01-05 12:19 ` Arjan van de Ven
2006-01-05 14:30 ` Jakub Jelinek
2006-01-05 16:55 ` Linus Torvalds
2006-01-05 18:42 ` Daniel Jacobowitz
2006-01-05 17:02 ` Matt Mackall
2006-01-05 17:59 ` Martin Bligh
2006-01-05 18:09 ` Arjan van de Ven
2006-01-05 18:43 ` Daniel Jacobowitz
2006-01-05 19:17 ` Linus Torvalds
2006-01-05 19:40 ` Linus Torvalds
2006-01-05 19:49 ` Martin Bligh
2006-01-05 20:13 ` Linus Torvalds
2006-01-05 20:15 ` Linus Torvalds
2006-01-05 23:30 ` Ingo Molnar
2006-01-05 23:54 ` Linus Torvalds
2006-01-06 0:15 ` Ingo Molnar
2006-01-06 0:27 ` Linus Torvalds
2006-01-06 0:54 ` Ingo Molnar
2006-01-06 0:02 ` Martin Bligh
2006-01-06 0:40 ` Ingo Molnar
2006-01-06 0:55 ` Martin Bligh
2006-01-06 1:48 ` Mitchell Blank Jr
2006-01-06 0:50 ` Mitchell Blank Jr
2006-01-06 0:58 ` Ingo Molnar
2006-01-06 1:22 ` Mitchell Blank Jr
2006-01-05 21:34 ` Matt Mackall
2006-01-05 22:08 ` Linus Torvalds
2006-01-05 22:36 ` Matt Mackall
2006-01-05 22:49 ` Martin Bligh
2006-01-05 23:02 ` Matt Mackall
2006-01-05 22:55 ` Ingo Molnar
2006-01-05 23:11 ` Matt Mackall
2006-01-05 23:27 ` Jesse Barnes
2006-01-05 23:58 ` Ingo Molnar
2006-01-05 21:32 ` Grzegorz Kulewski
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