Date: Fri, 8 Apr 2005 01:14:26 -0500 From: Alan Cox <alc@cs.rice.edu> To: Alan Cox <alc@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/lib/libc/amd64/string Makefile.inc bcmp.S memcmp.S Message-ID: <20050408061426.GH20275@cs.rice.edu> In-Reply-To: <200504080515.j385FtbX016388@repoman.freebsd.org> References: <200504080515.j385FtbX016388@repoman.freebsd.org>
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On Fri, Apr 08, 2005 at 05:15:55AM +0000, Alan Cox wrote: > alc 2005-04-08 05:15:55 UTC > > FreeBSD src repository > > Modified files: > lib/libc/amd64/string Makefile.inc > Added files: > lib/libc/amd64/string bcmp.S memcmp.S > Log: > Add machine-specific, optimized implementations of bcmp and memcmp. > > PR: 73111 > Submitted by: Ville-Pertti Keinonen <will@iki.fi> (taken from NetBSD) > MFC after: 3 weeks > > Revision Changes Path > 1.2 +1 -1 src/lib/libc/amd64/string/Makefile.inc > 1.1 +25 -0 src/lib/libc/amd64/string/bcmp.S (new) > 1.1 +41 -0 src/lib/libc/amd64/string/memcmp.S (new) It is worth noting that by default the current version of gcc automatically inlines its own implementation of these functions. That implementation is slower than this new libc implementation for strings of non-trivial length. Alan
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