This is the mail archive of the libc-hacker@sources.redhat.com mailing list for the glibc project.

Note that libc-hacker is a closed list. You may look at the archives of this list, but subscription and posting are not open.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]

Re: inlined string tests are slower on i686

To: Greg McGary <greg at mcgary dot org>
Subject: Re: inlined string tests are slower on i686
From: Ulrich Drepper <drepper at redhat dot com>
Date: 26 Jul 2000 08:57:33 -0700
Cc: libc-hacker at sourceware dot cygnus dot com
References: <200007260813.BAA03910@kayak.mcgary.org>
Reply-To: drepper at cygnus dot com (Ulrich Drepper)

Greg McGary <greg@mcgary.org> writes:

> The non-inlined version is 4% faster
> 
> Does anyone have more comprehensive benchmarks that justify string
> inlines for ix86?

I expect something like this.  The increased code size is of course
visible.  But this is not the normal case.  In a normal program you'll
never find that many string functions in one place and then the jump
to a not so often used function is more expensive.

-- 
---------------.                          ,-.   1325 Chesapeake Terrace
Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
Red Hat          `--' drepper at redhat.com   `------------------------

References:
- inlined string tests are slower on i686
  - From: Greg McGary

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]