From: "H. Peter Anvin" <hpa@zytor.com>
To: NeilBrown <neilb@suse.de>
Cc: majianpeng <majianpeng@gmail.com>,
linux-raid <linux-raid@vger.kernel.org>
Subject: Re: [PATCH] md/raid1:using else-if instead if.
Date: Sun, 01 Apr 2012 19:11:47 -0700 [thread overview]
Message-ID: <4F790AE3.204@zytor.com> (raw)
In-Reply-To: <20120402115836.76e98982@notabene.brown>
On 04/01/2012 06:58 PM, NeilBrown wrote:
>
> I'm really surprised that the compiler doesn't optimise that out.
>
It depends partly on what it can depend on ... it probably isn't
allowed to because of alias analysis, at least not without the else if.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
prev parent reply other threads:[~2012-04-02 2:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-01 2:29 [PATCH] md/raid1:using else-if instead if majianpeng
2012-04-02 0:03 ` H. Peter Anvin
2012-04-02 1:58 ` NeilBrown
2012-04-02 2:11 ` H. Peter Anvin [this message]
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