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: <1182731022.6819.10.camel@laptopd505.fenrus.org>
Date:	Sun, 24 Jun 2007 17:23:42 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Benjamin LaHaise <bcrl@...ck.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, 2007-06-24 at 20:12 -0400, Benjamin LaHaise wrote:
> 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.

so those distros pick space over some cycles. Who are you to then
override that choice ? ;-)

seriously, why are we even talking about overriding a choice the user
(or distro vendor as user) made here?

-- 
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org

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