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x86: adapt SSSE3 warp_affine_8x8{,t} and wiener filter to SSE2

Victorien Le Couviour--Tuffet requested to merge psilokos/dav1d:sse2 into master

relative decode performance report (ST, 1st 1000 frames):

  • /home/psilokos/Videos/AV1/8-bit/AV1beta2.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = 11.43799137712401724576%

  • /home/psilokos/Videos/AV1/8-bit/Chimera-1080p-8b.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = 10.40367574663603544470%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-1080p-rav1e.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = .24595924104005621926%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-1440p-rav1e.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = .54205982734390684602%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-2160p-rav1e.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = -.77717751871860487157%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-400.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = 13.18442379916979640246%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-420.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = 10.95060577819198508854%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-422.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = 14.14653156664068589244%

  • /home/psilokos/Videos/AV1/8-bit/Morocco8K-8b-444.ivf:

      586de2dde55b473f71beccc62f4d84f61bc3f84d..6c81623eab4154e1387681695d51a52a08ec4eec = 14.85705596107055961071%
Edited by Victorien Le Couviour--Tuffet

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