Re: [PATCH RFC] [X86] performance improvement for memcpy_64.S by fast string.

[Andi Kleen]

ling.ma@xxxxxxxxx writes:

> Intel Nehalem improves the performance of REP strings significantly
> over previous microarchitectures in several ways:

The problem is that it's not necessarily a win on older CPUs to
do it this way.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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