linux-kernel - Re: [PATCH 46/74] x86, lto: Disable fancy hweight optimizations for LTO

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Message-ID: <20120820111838.GC4461@tassilo.jf.intel.com>
Date:	Mon, 20 Aug 2012 04:18:38 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Jan Beulich <JBeulich@...e.com>
Cc:	Andi Kleen <andi@...stfloor.org>, x86@...nel.org,
	akpm@...ux-foundation.org, mmarek@...e.cz,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 46/74] x86, lto: Disable fancy hweight optimizations for
 LTO

> That's not the point: The point really is that you could allow the
> alternative regardless of LTO, and just penalize the LTO case
> by having even the asm clobber the registers that a function call
> would not preserve.

That's just what a normal call does, right?

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only
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