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To: Linus Torvalds <torvalds@transmeta.com>
Cc: dphillips@sistina.com, <linux-kernel@vger.kernel.org>
Subject: Re: [RFC][PATCH] Faster generic_fls
References: <Pine.LNX.4.44.0304300824190.7157-100000@home.transmeta.com>
From: Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>
Date: 30 Apr 2003 18:03:14 +0200
In-Reply-To: <Pine.LNX.4.44.0304300824190.7157-100000@home.transmeta.com>
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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