linux-kernel - Re: kernel + gcc 4.1 = several problems

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Message-ID: <20070105171735.GA4745@ucw.cz>
Date:	Fri, 5 Jan 2007 17:17:36 +0000
From:	Pavel Machek <pavel@....cz>
To:	Segher Boessenkool <segher@...nel.crashing.org>
Cc:	Albert Cahalan <acahalan@...il.com>, akpm@...l.org,
	linux-kernel@...r.kernel.org, s0348365@....ed.ac.uk,
	bunk@...sta.de, mikpe@...uu.se, torvalds@...l.org
Subject: Re: kernel + gcc 4.1 = several problems

Hi!

> >IMHO you should play such games with "g++ -O9", but 
> >that's
> >a discussion for a different mailing list.
> 
> For a different mailing list indeed; let me just point 
> out
> that for certain important quite common cases it's an 
> ~50%
> overall speedup.

Hmm, what code was that? 'signed int does not wrap around' does not
seem to provide _that_ much info...
							Pavel
-- 
Thanks for all the (sleeping) penguins.
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