Port HammingDistance to SSSE3

Bug: libyuv:701
Test: BenchmarkHammingDistance_Opt
Change-Id: Ibdd5d382677ebef4f82a62e0d5c3b88614a3b6e4
Reviewed-on: https://chromium-review.googlesource.com/696290
Commit-Queue: Frank Barchard <fbarchard@google.com>
Reviewed-by: Cheng Wang <wangcheng@google.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 52301d12..9badf08c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -160,9 +160,9 @@ static_library("libyuv_internal") {
   # To enable AVX2 or other cpu optimization, pass flag here
   if (!is_win) {
     cflags = [
-      #      "-mpopcnt",
-      #      "-mavx2",
-      #      "-mfma",
+      # "-mpopcnt",
+      # "-mavx2",
+      # "-mfma",
       "-ffp-contract=fast",  # Enable fma vectorization for NEON.
     ]
   }