Turn on convolve_round by default

The performance on default experiment is
lowres: 0.812%

midres/hdres and AWCY tests are still running

Change-Id: Id2209c79df6517732dd06c2712a7bdefde118ead

av1/common/reconinter.c

@@ -791,11 +791,11 @@ void av1_make_masked_inter_predictor(const uint8_t *pre, int pre_stride,
 #if CONFIG_HIGHBITDEPTH
 #if CONFIG_CONVOLVE_ROUND
   DECLARE_ALIGNED(16, CONV_BUF_TYPE, tmp_dst2[MAX_SB_SQUARE]);
+  memset(tmp_dst2, 0, sizeof(tmp_dst2));
   int tmp_dst2_stride = MAX_SB_SIZE;
   CONV_BUF_TYPE *org_dst = conv_params->dst;
   int org_dst_stride = conv_params->dst_stride;
   if (conv_params->round == CONVOLVE_OPT_NO_ROUND) {
-    memset(tmp_dst2, 0, sizeof(tmp_dst2));
     conv_params->dst = tmp_dst2;
     conv_params->dst_stride = tmp_dst2_stride;
     // mask compound has its own average mechanism

configure

@@ -520,6 +520,7 @@ post_process_cmdline() {
     soft_enable smooth_hv
     soft_enable parallel_deblocking
     soft_enable rect_intra_pred
+    soft_enable convolve_round
 
     # Backwards/jenkins compatibility with --enable-aom-highbitdepth
     enabled aom_highbitdepth && enable_feature highbitdepth