Allow non-uniform above array in highbd d45 predictor Neon impl
The existing implementation doesn't appear to manifest as a failure in
any of the predictor or MD5 tests, but it does rely on the predictor
tests filling the second `bs` elements of the `above` input array with
copies of `above[bs - 1]` in order to match the C implementation.
This patch adjusts the Neon implementation to correctly match the C
implementation in the case where the elements of the `above` array all
differ.
Performance of the predictor is mostly unchanged, except for the 16x16
block size where it appears to have gotten marginally faster across most
compiler/micro-architecture combinations.
Bug: webm:1797
Change-Id: Iac166d6047316c0382e0f2790ce780fc99674b43
1 file changed
