Re: [Patches] [PATCH] ARM: NEON detected memcpy.

["Joseph S. Myers" <joseph@xxxxxxxxxxxxxxxx>]

On Wed, 3 Apr 2013, Shih-Yuan Lee (FourDollars) wrote:

> I am working on the NEON detected memcpy.
> This is based on what Siarhei Siamashka did at 2009 [1].

I still don't see any copyright assignment on file (whether individual 
with an employer disclaimer, or corporate) that would cover that work.  
Without one, we can't use it, and I advise anyone working on NEON memcpy 
not to look at it.

I was previously told by people at ARM that NEON memcpy wasn't a good idea 
in practice because of raised power consumption, context switch costs etc. 
from using NEON in processes that otherwise didn't use it, even if it 
appeared superficially beneficial in benchmarks.

-- 
Joseph S. Myers
joseph@xxxxxxxxxxxxxxxx
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