i686 build of Fedora Core
H. Peter Anvin
hpa at zytor.com
Wed Jul 28 21:28:22 UTC 2004
Arjan van de Ven wrote:
>
> the "new" instruction provided by i686 is "cmov", which, btw, isn't
> actually faster anymore compared to explict test and jump with p4's and
> athlons.
>
What about on P6 core machines? It seems Intel is heading down the path of
multi-P6-core machines.
For Transmeta processors, the dynamic translator turns a jump+mov combination
into a select micro-op (the native version of cmov), so it doesn't matter
there; and AFAIK VIA don't have them.
-hpa
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