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release/1.0
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N
ffmpeg-0.6.3
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${ noResults }
8 Commits (c52b1c283e30c0985cf062248eb1dd8fb0485966)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Lynne
|
bbe95f7353
|
x86: replace explicit REP_RETs with RETs
From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether. |
2 years ago |
Andreas Rheinhardt
|
8bec225c3c |
swscale/x86/yuv2yuvX: Remove unused ff_yuv2yuvX_mmx()
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> |
2 years ago |
Alan Kelly
|
3ce8d09244 |
libswscale/x86/yuv2yuvX: Removes unrolling for mmx and mmxext
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> |
4 years ago |
James Almer
|
1a555d3c60 |
swscale/x86/yuv2yuvX: use the movsxdifnidn helper macro
Simplifies code Signed-off-by: James Almer <jamrial@gmail.com> |
4 years ago |
|
James Almer
|
ebb48d85a0 |
swscale/x86/yuv2yuvX: use movq to load 8 bytes in all non-AVX2 functions
mova expands to movq on non-XMM functions Signed-off-by: James Almer <jamrial@gmail.com> |
4 years ago |
|
James Almer
|
d512ebbaed |
swscale/x86/yuv2yuvX: use the SPLATW helper macro
Simplifies code Signed-off-by: James Almer <jamrial@gmail.com> |
4 years ago |
|
James Almer
|
c2bf1dcace |
swscale/x86/swscale: fix compilation with old yasm
Where AVX2 may not be supported. Signed-off-by: James Almer <jamrial@gmail.com> |
4 years ago |
Alan Kelly
|
554c2bc708 |
swscale: move yuv2yuvX_sse3 to yasm, unrolls main loop
And other small optimizations for ~20% speedup. |
4 years ago |