tree 91312238f0d31b8ea99c02deb4d7f7b870b594d8
parent 2cc0666de131c2b44db08d0f51c07a2d7cd4073f
author Jonathan Wright <jonathan.wright@arm.com> 1654270331 +0100
committer James Zern <jzern@google.com> 1663380081 +0000

Optimize av1_dist_wtd_convolve_2d_neon using SDOT instruction

Add an alternative AArch64 implementation of the
av1_dist_wtd_convolve_2d_horiz_neon helper function for targets that
implement the Armv8.4-A SDOT (signed dot-product) instruction.

The existing MLA-based implementation of
av1_dist_wtd_convolve_2d_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: Ic17fe233b90c2543346e988e869f63da46c6ece7