On 11/15/10 15:07, Richard Guenther wrote:
quoted text
> On Mon, Nov 15, 2010 at 7:45 PM, Jeff Law<law@redhat.com>  wrote:
>> On 11/08/10 03:49, Richard Guenther wrote:
>>> 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.
>> A memory clobber should clobber anything in memory, including autos in
>> memory; if it doesn't, then that seems like a major problem.  I'd like to
>> see the rationale behind not clobbering autos in memory.
> Non-address taken automatic storage.  (note that we don't excercise this
> in optimization yet)
If the address of the auto isn't taken, then why is the object in memory 
to begin with (with the obvious exception for aggregates).

Jeff
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