commit 5d34e6a738984c6efd3884d7703680687cfdc00c
author David Barker <david.barker@argondesign.com> Thu May 18 15:12:50 2017 +0100
committer Debargha Mukherjee <debargha@google.com> Tue May 23 13:22:36 2017 +0000
tree fa5de29dad405b30a42c0e10f0f04693b8907718
parent 0f3c94e134ab4d358be43c39f2fed82fb8cdcdf5

Vectorize high-precision convolve filter

Add SSE2 lowbd and SSSE3 highbd versions of the filters
introduced in https://aomedia-review.googlesource.com/c/11962/ .

These filters are equivalent in speed to the SSE2 implementations
of the regular convolve filter. The average time to filter a
64x64 block is:

lowbd C: 52us
lowbd SSE2: 5.6us
highbd C: 53us
highbd SSSE3: 5.8us

Also add a correctness test based on the warp filter tests.

Change-Id: Ia0d81100e8a414bbfc2b5f664d751cf24765299e