From: Phil Edwards <pedwards@disaster.jaj.com>
To: Andi Kleen <ak@suse.de>
Cc: dewar@gnat.com, gcc@gcc.gnu.org, shebs@apple.com
Subject: Re: Precompiled headers (or other speed ups)
Date: Wed, 10 Jan 2001 08:32:00 -0000 [thread overview]
Message-ID: <20010110114201.A8597@disaster.jaj.com> (raw)
In-Reply-To: <ouphf37tu1s.fsf@pigdrop.muc.suse.de>
On Wed, Jan 10, 2001 at 02:29:03PM +0100, Andi Kleen wrote:
>
> I don't know why that's the case, but I suspect all the operator overloading
> resolving and handling of the non regular C++ grammar etc. has a cost over C.
> [It actually quite surprised me, I always assumed that the backend would
> dominate compile cost]
There have been some changes since
http://gcc.gnu.org/ml/gcc/2000-08/msg00515.html
was posted in last August, but there is a good example of how the parser
can dominate just about everything. That message kicked off a very good
discussion on precompiled headers and parsing performance in C++.
Phil
--
pedwards at disaster dot jaj dot com | pme at sources dot redhat dot com
devphil at several other less interesting addresses in various dot domains
The gods do not protect fools. Fools are protected by more capable fools.
next prev parent reply other threads:[~2001-01-10 8:32 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-09 14:55 dewar
2001-01-09 15:43 ` Stan Shebs
2001-01-10 22:55 ` Toon Moene
2001-01-10 5:29 ` Andi Kleen
2001-01-10 8:32 ` Phil Edwards [this message]
2001-01-10 15:12 ` Stan Shebs
-- strict thread matches above, loose matches on Subject: below --
2001-01-10 11:45 dewar
2001-01-10 10:21 dewar
2001-01-10 9:56 David Korn
2001-01-10 11:14 ` Zack Weinberg
2001-01-10 13:54 ` Neil Booth
2001-01-10 15:45 ` Zack Weinberg
2001-01-10 15:26 ` Joe Buck
2001-01-10 9:35 dewar
2001-01-10 18:53 ` Yu Xuanwei
2001-01-10 9:29 dewar
2001-01-10 9:11 David Korn
2001-01-10 9:02 Phil Edwards
2001-01-10 8:50 dewar
2001-01-09 19:52 dewar
2001-01-09 11:26 dewar
2001-01-08 21:09 dewar
2001-01-09 0:33 ` Geoff Keating
2001-01-08 20:41 dewar
2001-01-09 3:01 ` Rob Taylor
2001-01-09 10:04 ` amep
2001-01-09 14:36 ` Stan Shebs
[not found] <978997896.4164.ezmlm@gcc.gnu.org>
2001-01-08 19:45 ` amep
2001-01-08 21:00 ` Geoff Keating
2001-01-09 0:41 ` Adrien Hernot
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