[Mono-list] cpblk?

[Serge]

> I would include that patch if you remove the MOVAPS or test if the
> feature is really available. Maybe the simple generic memcopy you posted
> first is not much slower?

Great! I will clean it up and post newer patch for review.
Yes, I think I will remove SSE-specific stuff for now, reliable detection
would require to check if OS supports SSE/SSE2 - it's a bit tricky.
It's faster, so it can be re-added later, perhaps in the disabled state by default
(with addition of some command line option to enable use of extensions).
I'm also going to add some code-generation macros to emit MMX/SSE/etc. code.

Sergey