linux-kernel - Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?

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Message-ID: <87k4kospnd.fsf@basil.nowhere.org>
Date:	Mon, 08 Nov 2010 00:03:02 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Andreas Schwab <schwab@...ux-m68k.org>
Cc:	Jim <jim876@...all.nl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	gcc@....gnu.org
Subject: Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling  drivers/char/i8k.c ?

Andreas Schwab <schwab@...ux-m68k.org> writes:
>
> The asm fails to mention that it modifies *regs.

It has a memory clobber, that should be enough, no?

Besides in any case it cannot be eliminated because it has
valid non dead inputs and outputs.

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