[FFmpeg-trac] #5568(swscale:open): POWER8 VSX vectorization libswscale/swscale.c
FFmpeg
trac at avcodec.org
Tue Jun 19 21:17:14 EEST 2018
#5568: POWER8 VSX vectorization libswscale/swscale.c
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Reporter: edelsohn | Owner:
Type: enhancement | Status: open
Priority: wish | Component: swscale
Version: git-master | Resolution:
Keywords: bounty vsx | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by bookmoons):
Hi guys. I have something toward a vectorized hScale8To15_c from
swscale.c. Profiling with callgrind shows it's a little faster than the
unoptimized version, but not as fast as the extant altivec version. Hope
to figure to figure out what's causing the difference and improve it.
Unoptimized - 11,140,574
VSX optimized - 9,670,008
Altivec optimized - 3,511,966
Does this seem like the right direction?
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Ticket URL: <https://trac.ffmpeg.org/ticket/5568#comment:11>
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