linux-kernel - Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization

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Message-ID: <20070625001203.GB971@kvack.org>
Date:	Sun, 24 Jun 2007 20:12:03 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Oleg Verych <olecom@...wer.upol.cz>, rae l <crquan@...il.com>,
	trivial@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization

On Sun, Jun 24, 2007 at 05:09:16PM -0700, Arjan van de Ven wrote:
> if you care about the last cycle, don't specify -Os but -O2.
> simple as that... you get what you tell the compiler you want.

Certain distros are shipping kernels compiled with -Os.  And it's more 
than just a couple of cycles.

		-ben
-- 
"Time is of no importance, Mr. President, only life is important."
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