Martin Storsjö authored Oct 07, 2019 and Jean-Baptiste Kempf committed Oct 08, 2019

Relative speedup over C code:
                  Cortex A7     A8     A9    A53    A72    A73
warp_8x8_8bpc_neon:    2.79   5.45   4.18   3.96   4.16   4.51
warp_8x8t_8bpc_neon:   2.79   5.33   4.18   3.98   4.22   4.25

Comparison to original ARM64 assembly:

ARM64:            Cortex A53     A72     A73
warp_8x8_8bpc_neon:   1854.6  1072.5  1102.5
warp_8x8t_8bpc_neon:  1839.6  1069.4  1089.5
ARM32:
warp_8x8_8bpc_neon:   2132.5  1160.3  1218.0
warp_8x8t_8bpc_neon:  2113.7  1148.0  1209.1