[U-Boot] [PATCH v2 4/4] cmd: mem: Use memcpy for 'cp' command

[Tom Rini <trini@konsulko.com>]

On Thu, Dec 15, 2016 at 04:00:13PM -0200, Fabio Estevam wrote:

> Simplify the 'cp' command implementation by using the memcpy() function,
> which brings the additional benefit of performance gain for those who have
> CONFIG_USE_ARCH_MEMCPY selected.
> 
> Tested on a mx6qsabreauto board where a 5x gain in performance is seen
> when reading 10MB from the parallel NOR memory.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
> ---
> Changes since v1:
> - Always use memcpy()

I feel like this is correct.  I also feel like it's too close to release
to do this, so I'll be applying this shortly after release, thanks!

I also found it odd, and might try and rectify, that we don't have a
'cp' test in test.py which would make being relatively sure it's OK on
x86/MIPS/PowerPC easy, slightly less easy (I'll be firing up qemu by
hand and maybe writing a test too).

-- 
Tom
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