Film grain SSSE3 optimizations

fgy_32x32xn_8bpc_c: 14201.3
fgy_32x32xn_8bpc_ssse3: 3443.0

fguv_32x32xn_8bpc_420_csfl0_c: 8148.9
fguv_32x32xn_8bpc_420_csfl0_ssse3: 1371.3
fguv_32x32xn_8bpc_420_csfl1_c: 6391.9
fguv_32x32xn_8bpc_420_csfl1_ssse3: 1034.8

gen_grain_uv_ar0_8bpc_420_c: 29773.7
gen_grain_uv_ar0_8bpc_420_ssse3: 7068.9
gen_grain_uv_ar1_8bpc_420_c: 46113.2
gen_grain_uv_ar1_8bpc_420_ssse3: 22148.1
gen_grain_uv_ar2_8bpc_420_c: 70061.4
gen_grain_uv_ar2_8bpc_420_ssse3: 25479.0
gen_grain_uv_ar3_8bpc_420_c: 113826.0
gen_grain_uv_ar3_8bpc_420_ssse3: 30004.9

gen_grain_y_ar0_8bpc_c: 84853.3
gen_grain_y_ar0_8bpc_ssse3: 23528.0
gen_grain_y_ar1_8bpc_c: 140775.5
gen_grain_y_ar1_8bpc_ssse3: 70410.2
gen_grain_y_ar2_8bpc_c: 251311.3
gen_grain_y_ar2_8bpc_ssse3: 95222.2
gen_grain_y_ar3_8bpc_c: 394763.0
gen_grain_y_ar3_8bpc_ssse3: 103541.9

changed the description

mentioned in issue #216

added 5 commits

• 966b0643 - Copy AVX2 film grain SIMD into SSSE3 file as base
• bbbde7dd - SSSE3 implementation of generate_grain_y()
• c54f0b2c - SSSE3 implementation of generate_grain_uv()
• 2d22afc8 - SSSE3 implementation of fguv_32x32xn()
• 1bd181a4 - SSSE3 implementation of fgy_32x32xn()

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added 5 commits

• d984d3b6 - Copy AVX2 film grain SIMD into SSSE3 file as base
• f7060b41 - SSSE3 implementation of generate_grain_y()
• bcbf1bee - SSSE3 implementation of generate_grain_uv()
• f8c7f45c - SSSE3 implementation of fguv_32x32xn()
• c3c6b757 - SSSE3 implementation of fgy_32x32xn()

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added 4 commits

• fadb92a9 - SSSE3 implementation of generate_grain_y()
• 3b9e6925 - SSSE3 implementation of generate_grain_uv()
• da1300ec - SSSE3 implementation of fguv_32x32xn()
• 3edb6165 - SSSE3 implementation of fgy_32x32xn()

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added 2 commits

• 307a4bb9 - SSSE3 implementation of fguv_32x32xn()
• 37a234b8 - SSSE3 implementation of fgy_32x32xn()

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marked the checklist item win64 testing. as completed

added performance label

added 1 commit

• 2925f752 - Make generate_grain_y() work on 32bit

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added 1 commit

• 4a64f8bf - Make generate_grain_y() work on 32bit

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added 1 commit

• 8f89d7be - Make generate_grain_y() work on 32bit

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added 1 commit

• 42b9e55c - Make generate_grain_y() work on 32bit

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added 1 commit

• 94b491f9 - Make generate_grain_y() work on 32bit

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added 1 commit

• a1d5259a - Make generate_grain_y() work on 32bit

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added 1 commit

• 542a2376 - Make generate_grain_y() work on 32bit

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added 22 commits

• 542a2376...8d574f70 - 16 commits from branch videolan:master
• 59db5f7e - Copy AVX2 film grain SIMD into SSSE3 file as base
• 7fa56318 - SSSE3 implementation of generate_grain_y()
• 8195b609 - SSSE3 implementation of generate_grain_uv()
• 029a65d9 - SSSE3 implementation of fguv_32x32xn()
• 85b1e02c - SSSE3 implementation of fgy_32x32xn()
• e7bb80d0 - Make generate_grain_y() work on 32bit

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changed the description

added 1 commit

• bf614710 - WIP on 32bit generate_grain_uv()

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added 1 commit

• 1175d443 - WIP on 32bit generate_grain_uv()

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