On Nov 12, 2010, at 4:23 PM, Eduardo Horvath wrote:
> On Sat, 13 Nov 2010, Valeriy E. Ushakov wrote:
>
>> On Fri, Nov 12, 2010 at 21:59:54 +0100, Joerg Sonnenberger wrote:
>>
>>> On Fri, Nov 12, 2010 at 08:31:39PM +0000, Eduardo Horvath wrote:
>>>> The assignment:
>>>>
>>>> foo.size = htole64(size);
>>>>
>>>> Cannot be replaced with:
>>>>
>>>> __inline __asm("stxa %1, [%0] ASI_LITLE" : &foo.size : size);
>>>
>>> Actually, it should be possible to do exactly that if you allow the
>>> output register to be a memory location. Not sure how smart GCC is for
>>> this though.
>>
>> Yeah, I don't see why memory operand contraint wouldn't work here.
>> SPARC 'T' constraint - memory address aligned at 8 bytes.
>
> 'Cause you're storing to foo.size which is not a parameter in the macro.
Then again, you could teach the GCC optimizer to make the substitution.
paul
