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From: David Howells <dhowells@redhat.com>
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To: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Subject: Re: [PATCH 1/3] Fix Unlikely(x) == y
Date: Mon, 18 Feb 2008 14:27:10 +0000
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Cc: Adrian Bunk <bunk@kernel.org>, Roel Kluin <12o3l@tiscali.nl>,
	lkml <linux-kernel@vger.kernel.org>, Willy Tarreau <w@1wt.eu>,
	linuxppc-dev@ozlabs.org, cbe-oss-dev@ozlabs.org,
	Arjan van de Ven <arjan@infradead.org>
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Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> wrote:

> Hence shouldn't we ask the gcc people what's the purpose of
> __builtin_expect(), if it doesn't live up to its promise?

__builtin_expect() is useful on FRV where you _have_ to give each branch and
conditional branch instruction a measure of probability whether the branch
will be taken.

David