[FFmpeg-devel] [PATCH] Add cpu flag "c3-2" to configure

Zuxy Meng zuxy.meng
Tue Feb 26 15:00:42 CET 2008


2008/2/26, M?ns Rullg?rd <mans at mansr.com>:
> Enrico wrote:
> > Hi, the attached patch adds support for configure cpu flag "c3-2",
> > which is the gcc flag i'm using compiling for a VIA Nehemiah cpu.
> >
> > It is added in the targets that support cmov
> What is the latency of the cmov instruction on this CPU?  Is it correct
> to set fast_cmov?

IIRC C3-2 is of an in-order core and cmov should be at least faster
than a conditional jump.
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