x86: Add pal_pred AVX2 asm (!194) · Merge requests · VideoLAN / dav1d

Henrik Gramner requested to merge gramner/dav1d:pal_pred_avx2 into master Oct 19, 2018

Skylake-X benchmark results:

pal_pred_w4_8bpc_c: 93.9
pal_pred_w4_8bpc_avx2: 14.4
pal_pred_w8_8bpc_c: 209.2
pal_pred_w8_8bpc_avx2: 14.8
pal_pred_w16_8bpc_c: 494.4
pal_pred_w16_8bpc_avx2: 22.2
pal_pred_w32_8bpc_c: 1471.1
pal_pred_w32_8bpc_avx2: 26.5
pal_pred_w64_8bpc_c: 3156.9
pal_pred_w64_8bpc_avx2: 63.7

x86: Add pal_pred AVX2 asm

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