tree 6d876edf844af2505d326835e04a3151a5bd4c96
parent 09f7872651c306e7820a81d0b70771f17728476e
author Jonathan Wright <jonathan.wright@arm.com> 1756222302 +0100
committer Jonathan Wright <jonathan.wright@arm.com> 1756688457 -0700

Optimize Neon DotProd av1_convolve_y_sr 12-tap path

Decompose the narrowing right shift step in the convolution kernels
to avoid needing two successive complex (and slower) saturating narrow
instructions. The new sequence requires a simple truncating, narrowing
shift followed by a slower saturating narrowing shift.

Change-Id: I68a64ed61d634cbfac3efac1029004e5896f6bbd