gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?

[Richard Guenther]

On Mon, Nov 8, 2010 at 12:03 AM, Andi Kleen <andi@firstfloor.org> wrote:
> 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?

No.  A memory clobber does not cover automatic storage.

Btw, I can't see a testcase anywhere so I just assume Andreas got
it right as usual.

Richard.

> 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.
>