amd64/73111: Optimized libc string functions missing for amd64

Ville-Pertti Keinonen will at
Mon Oct 25 05:00:57 PDT 2004

>Number:         73111
>Category:       amd64
>Synopsis:       Optimized libc string functions missing for amd64
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-amd64
>State:          open
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Mon Oct 25 12:00:56 GMT 2004
>Originator:     Ville-Pertti Keinonen
>Release:        6.0-current
Using optimized assembly language versions of string functions on amd64 (this is already done on other architectures) would probably be a good idea.

Functions adapted from NetBSD (which can be extracted into /usr/src for inclusion in a buildworld) are available at the following URL:

I mentioned the issue on -current, but this didn't result in any discussion.

The NetBSD functions may or may not all be desirable in their current form; some of the functions have extensive unrolling and may produce a performance penalty for short strings (but a huge advantage for longer ones).



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