[MPlayer-dev-eng] [RFC] disable fastmemcpy on x86-64 by default

[Piotr Stachura]

> > Ouch. Which vo and what resolution?
>
> as I mentioned "-vo null" that is somehow strange according to VO time.
> Resolution: video 640x480, working 1280x1024 but when null VO then it
> shouldn't matter.
>
> If it matters:
>
> CommandLine: '-quiet' '-benchmark' '-vo' 'null' '-nosound' '001. 死神になっちゃった日
> (A Shinigami is Born!).mkv' '-endpos' '100' '-v'
> Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
> VO: [null] 640x480 => 640x480 Planar YV12
> *** [ass] Exporting mp_image_t, 640x480x12bpp YUV planar, 460800 bytes
> *** [vo] Allocating mp_image_t, 640x480x12bpp YUV planar, 460800 bytes

Now I made also tests on -vo xv:
w/o patch:
BENCHMARKs: VC:  15.041s VO:  17.028s A:   0.000s Sys:   0.186s =   32.254s
BENCHMARK%: VC: 46.6319% VO: 52.7926% A:  0.0000% Sys:  0.5754% = 100.0000%

w/ patch:
BENCHMARKs: VC:  15.064s VO:  17.061s A:   0.000s Sys:   0.196s =   32.322s
BENCHMARK%: VC: 46.6070% VO: 52.7857% A:  0.0000% Sys:  0.6072% = 100.0000%

VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)
VO: [xv] 640x480 => 640x480 Planar YV12

Now benchmarks are almost this same. Mayby something is wrong with null 
output :>
-- 
Piotr Stachura
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