Concerning the ahlon-xp- build, I guess (MMX+SSE+3DNOW required) means
CFLAGS="... -m3dnow -msse -mmmx"
or is it
CFLAGS="... -march=athlon-xp"
or is it (for nasm)
DHAVE_SSE DHAVE_MMX DHAVE_3DNOW
(as in the x264-Makefile, sorry, don't have one here now).
Maybe it is a bit of everything.
Most of these flags do not seem to make that much of a difference yet, the framerates seem to be not much higher or lower (on Linux again only).
I am just asking, because i want to build it on Linux, and therefor i am searching for Flags (C, nasm) where i can get optimal performance.
Maybe i test gcc-4.0-beta with x264.
|