[PD-dev] pdp's mmx support
Hans-Christoph Steiner
hans at eds.org
Mon Oct 29 20:21:53 CET 2007
On Oct 29, 2007, at 3:10 PM, IOhannes m zmoelnig wrote:
> Hans-Christoph Steiner wrote:
>>
>> Well, AFAIK, there is no further development on MMX, while there
>> is with
>
> there is: it is called SSE
>
>> SSE. And it seems that SSE is meant to replace MMX, instead of
>> complement it. Plus if IIRC, MMX has some serious drawbacks to
>> it. It
>
> i don't know of any "drawbacks" of MMX.
One I know of is that is takes 50 cycles to switch from the FP unit
to the MMX unit.
>> seems to be something like SSE v0 ;)
>
> as said above: it is (imho)
>
> still i don not see any "deprecation" in this.
> afaik, every processor that supports SSE3 (or whatever is current)
> also supports MMX.
> i have never read anything like "it seems you are running MMX;
> please consider upgrading to SSE2" to the like
>
> mfg.asdr
> IOhannes
Here's the question:
Do MMX and SSE have different instruction sets? If so, is SSE
preferred over MMX?
.hc
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