tree 41fef51d2dc8ce1cf672056a2913d2f8f5637d78
parent 11bd02104d7b697820a56eb568b96db313ac8391
author Jonathan Wright <jonathan.wright@arm.com> 1654270331 +0100
committer James Zern <jzern@google.com> 1663651106 +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: Ia9175ddcf12516692d757f273e6ab525fe9fad30