On Tue, 30 Mar 2010 00:41:48 +0200
????? ???????????? <olga.kryzhanov...@gmail.com> wrote:

> The libc mem* instructions use VIS but they are still suboptimal for
> small fixed size copies because they impose a significant overhead by
> *always* testing the size and alignment. For copies smaller than 48
> bytes the overhead is even greater than the size of data copied,
> making it inefficient compared to an inlined chain of VIS
> instructions.

What exactly are you trying to do? Can you give a few examples where
you think VIS instructions will give you better performance?
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