cvs commit: src/lib/libc/amd64/string Makefile.inc bcmp.S memcmp.S

Alan Cox alc at cs.rice.edu
Thu Apr 7 23:14:28 PDT 2005


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 at 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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