pixman with and without SSE2 benchmarks?

Roland Scheidegger sroland at tungstengraphics.com
Sun Sep 28 07:53:05 PDT 2008

On 28.09.2008 11:52, Clemens Eisserer wrote:
>> I'd bet against that :-). Core 2 has magnificent SSE performance indeed,
>> but that's true for MMX just as well.
> Well, Core2 (and AMD K10) got support for 128bit operations per clock,
> whereas previous processors only supported 64bit at once, and took 2
> cycles for 128 bit operations.
> MMX is just 64-bit, so it should't matter much there.
Ah yes you're right. Somehow I thought it would execute mmx twice as
fast as well - clearly that's not true. Should indeed be much closer on
older cpus.


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