commit 3556deaca3e499a42b1696a6a75a73ba3a0671d1
author Johann <johannkoenig@google.com> Mon Sep 26 17:17:20 2011 -0700
committer Johann <johannkoenig@google.com> Fri Sep 30 07:38:35 2011 -0700
tree 8779ed009f79649947905eff4ffe02ddbc74c93e
parent 6f9457ec12a98b3aceefbcb79783c084268d0b36

combine loopfilter data access

The data processed by the loopfilter overlaps. At the block level, this
results in some redundant transforms. Grouping the filtering allows for
a single 16x16 transpose (and inversion) instead of three 16x8 transposes
(and three more inversions).

This implementation is x86_64 only. We retain the previous
implementation for x86.

Improvements are obviously material dependant, but it seems to be ~%1 in
tests here.

Change-Id: I467b7ec3655be98fb5f1a94b5d145e5e5a660007