Date: Sat, 11 Aug 2007 08:00:29 +0800
From: Herbert Xu <herbert@gondor.apana.org.au>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: paulmck@linux.vnet.ibm.com, heiko.carstens@de.ibm.com, horms@verge.net.au,
       linux-kernel@vger.kernel.org, csnook@redhat.com, rpjday@mindspring.com,
       netdev@vger.kernel.org, ak@suse.de, cfriesen@nortel.com,
       akpm@linux-foundation.org, torvalds@linux-foundation.org,
       jesper.juhl@gmail.com, linux-arch@vger.kernel.org, zlynx@acm.org,
       schwidefsky@de.ibm.com, davem@davemloft.net, wensong@linux-vs.org,
       wjiang@resilience.com
Subject: Re: [PATCH 1/24] make atomic_read() behave consistently on alpha
Message-ID: <20070811000029.GA12779@gondor.apana.org.au>
References: <E1IJPkg-0000x0-00@gondolin.me.apana.org.au> <442f95ba19f8622ce04cf0334f34be11@kernel.crashing.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <442f95ba19f8622ce04cf0334f34be11@kernel.crashing.org>
User-Agent: Mutt/1.5.9i
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 828
Lines: 21

On Fri, Aug 10, 2007 at 10:07:27PM +0200, Segher Boessenkool wrote:
> 
> That means GCC cannot compile Linux; it already optimises
> some accesses to scalars to smaller accesses when it knows
> it is allowed to.  Not often though, since it hardly ever
> helps in the cost model it employs.

Please give an example code snippet + gcc version + arch
to back this up.

Thanks,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
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/