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Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
- From: Andi Kleen <andi at firstfloor dot org>
- To: Andreas Schwab <schwab at linux-m68k dot org>
- Cc: Jim <jim876 at xs4all dot nl>, Linux Kernel Mailing List <linux-kernel at vger dot kernel dot org>, gcc at gcc dot gnu dot org
- Date: Mon, 08 Nov 2010 00:03:02 +0100
- Subject: Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?
- References: <4CD538CA.8010901@xs4all.nl> <87wroostw3.fsf@basil.nowhere.org> <m2hbfsu57i.fsf@igel.home>
Andreas Schwab <schwab@linux-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@linux.intel.com -- Speaking for myself only.