[Development] Dropping iWMMXt?

[Thiago Macieira]

The only changes done to the file in the past almost 3 years are the license 
header updates and one overall change done to all draw helpers. Even the MMX 
helpers had two more changes in the period (one might be considered non-
trivial).

iWMMXt is present on Intel XScale PXA27x processors, which are ARMv5TE. This 
line of processors is still being sold by Marvell. Both that one[1] and the 
PXA320[2] still have iWMMXt. Also, it appears that recent Marvell ARMv7 chips, 
like the Armada (a.k.a. "Dove")[3], also have the technology, though I am not 
sure if the technologies branded as WMMX and WMMX2 are compatible.

I would guess that the technology is still relevant. That's not the point 
then.

The question is: does anyone feel like maintaining this? If no one feels 
responsible, we may as well drop it. It can always be brought back later if 
necessary.

Until there's a conclusion, I will touch the iWMMXt code.

FYI, it appears that not even Debian supports it.


[1] http://www.marvell.com//application-processors/pxa-
family/assets/pxa_27x_emts.pdf
[2] http://www.marvell.com//application-processors/pxa-
family/assets/PXA320_PB_R4.pdf
[3] http://www.marvell.com/application-
processors/armada-600/assets/armada610_pb.pdf

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
     Intel Sweden AB - Registration Number: 556189-6027
     Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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