tree 55a68cc3f7f5bd8f07740916c95611ba2c85fed0
parent 9491a13cfab5a0ea5e15a9c5c535fd8afe15335d
author Jonathan Wright <jonathan.wright@arm.com> 1657181531 +0100
committer James Zern <jzern@google.com> 1662158961 +0000

Implement Neon variance functions using UDOT instruction

Accelerate the Neon variance helper functions by implementing the sum
of squares calculation using a single Armv8.4-A UDOT instruction
instead of four MLAs.

The previous implementation is retained for use on systems that do
support the Armv8.4-A dot-product instructions.

Change-Id: I21689fd084c5ed9448fb1a630dc880ed45fac1df