[Ffmpeg-devel] building without optimizations, but with mmx enabled - II

Luca Barbato lu_zero
Thu Aug 10 17:58:56 CEST 2006

Marco Manfredini wrote:

> Theoretically, this should also lead to better optimisation, because the 
> compiler can arrange the loads. On the downside, "y" constraints work only if 
> the compiler gets at least the -fmmx switch. So this requires a change to the 

-fmmx doesn't exists (on gcc-fsf at least)

-mmmx is implied by -mcpu if the cpu supports it.



Luca Barbato

Gentoo/linux Gentoo/PPC

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