Re: [RFC][PATCH] Faster generic_fls

From: Falk Hueffner (falk.hueffner@student.uni-tuebingen.de)
Date: Wed Apr 30 2003 - 11:03:14 EST

Next message: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Previous message: Giuliano Pochini: "Re: Why DRM exists [was Re: Flame Linus to a crisp!]"
In reply to: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Next in thread: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Reply: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Linus Torvalds <torvalds@transmeta.com> writes:

> There is _never_ any excuse to use a lookup table for something that
> can be calculated with a few simple instructions. That's just
> stupid.

Well, the "few simple instructions" are 28 instructions on Alpha for
example, including 6 data-dependent branches. So I don't think it's
*that* stupid.

But I agree that benchmarking this stand-alone isn't particularly
useful.

-- 
	Falk
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Next message: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Previous message: Giuliano Pochini: "Re: Why DRM exists [was Re: Flame Linus to a crisp!]"
In reply to: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Next in thread: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Reply: Linus Torvalds: "Re: [RFC][PATCH] Faster generic_fls"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:35 EST