Hamming Distance SSE2 and AVX2 optimized

Bug: None
Test: None
Change-Id: Id52663f9c957aac3172fba92d888ad1b041d5cf0
Reviewed-on: https://chromium-review.googlesource.com/692981
Reviewed-by: Cheng Wang <wangcheng@google.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/BUILD.gn b/BUILD.gn
index b0c43725..52301d12 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -158,9 +158,13 @@ static_library("libyuv_internal") {
   }
 
   # To enable AVX2 or other cpu optimization, pass flag here
-  # cflags = [ "-mavx2", "-mpopcnt", "-mavx2", "-mfma" ]
   if (!is_win) {
-    cflags = [ "-ffp-contract=fast" ]  # Enable fma vectorization for NEON.
+    cflags = [
+      #      "-mpopcnt",
+      #      "-mavx2",
+      #      "-mfma",
+      "-ffp-contract=fast",  # Enable fma vectorization for NEON.
+    ]
   }
 }
 if (libyuv_use_neon) {