linux-kernel - Re: [PATCH] Tell the world we gave up on pushing CC_OPTIMIZE_FOR

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Message-ID: <20130117085851.GC30700@pd.tnic>
Date:	Thu, 17 Jan 2013 09:58:51 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Dave Jones <davej@...hat.com>, Kirill Smelkov <kirr@....spb.ru>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Tell the world we gave up on pushing CC_OPTIMIZE_FOR_SIZE

On Fri, Nov 23, 2012 at 07:10:40PM -0500, Dave Jones wrote:
> FWIW, we gave up using this in Fedora quite a few releases back
> because we kept finding workloads that it truly sucked on. For code
> that is quite bloaty and not particularly performance critical, maybe
> we could move -Os to individual directories.

FWIW, one more minor thing speaking against -Os: it warns worngly about
an unitialized variable while -O2 doesn't:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55759

Maybe there's more stuff wrong with it...

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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