tree 2df5ee788ee28676e8c2c0f8ac04e1d858141ac4
parent 34b7d5e6bd3d52f4e06f779b47b28ed2f1308a6d
author Ruiling Song <ruiling.song@intel.com> 1567780333 +0800
committer Yunqing Wang <yunqingwang@google.com> 1568676245 +0000

Speed up dr_prediction_z2_HxW_avx2

profiling against below command:
aomenc park_joy.yuv -w 1920 -h 1080 --i420 -b 8 --cpu-used=3 --cq-level=32 --limit=50 -p 1 -o parkjoy.iv

before the patch:
     1.66%     1.65%  aomenc   aomenc               [.] av1_dr_prediction_z2_avx2
            |
             --1.65%--build_intra_predictors
                       av1_dr_prediction_z2_avx2
with the patch:
     0.59%     0.59%  aomenc   aomenc            [.] av1_dr_prediction_z2_avx2
            |
             --0.58%--build_intra_predictors
                       av1_dr_prediction_z2_avx2

Change-Id: I1c486c5f16b598e7cfc4fa67d1efd6577bdfb793