tree 6bbdc1804b99d582d92c6eca7dc1e2958a0c4411
parent d53f0c2925271e04c7491b8227c2060a13cc9930
author Jonathan Wright <jonathan.wright@arm.com> 1658737881 +0100
committer James Zern <jzern@google.com> 1663724169 +0000

Optimize av1_dist_wtd_convolve_x_neon using SDOT instruction

Add an alternative AArch64 implementation of
av1_dist_wtd_convolve_x_horiz_neon for targets that implement the
Armv8.4-A SDOT (signed dot-product) instruction.

The existing MLA-based implementation of
av1_dist_wtd_convolve_x_horiz_neon is retained for use on target CPUs
that do not implement the SDOT instruction (or CPUs executing in
AArch32 mode.) The availability of the SDOT instruction is indicated
by the feature macro __ARM_FEATURE_DOTPROD.

Change-Id: I9091e25068164330a56997f157cc569234169b8f