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Date: Tue, 13 Aug 2002 15:42:05 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
Organization: Zytor Communications
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To: Adrian Bunk <bunk@fs.tum.de>
CC: linux-kernel@vger.kernel.org
Subject: Re: [patch 4/21] fix ARCH_HAS_PREFETCH
References: <Pine.NEB.4.44.0208140020260.1351-100000@mimas.fachschaften.tu-muenchen.de>
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Adrian Bunk wrote:
> 
> Ah, my misunderstanding:
> "optimize away" didn't mean "completely remove it" but "transform it to
> something semantically equivalent".
> 

The thing is that gcc has a special rule that keeps it from optimizing
it into something with less than O(n) time.

	-=hpa


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