Experiment with AVX optimizations for FMAC, FMUL operations.

media/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
@@ skipping 830 matching lines @@
     "base/media_export.h",
     "base/vector_math.cc",
     "base/vector_math.h",
     "base/vector_math_testing.h",
   ]
   configs += [
     ":media_config",
     ":media_implementation",
   ]
   deps = [
+    ":media_avx",
     "//base",
     "//ui/gfx/geometry",
   ]
 }
 
+if (current_cpu == "x86" || current_cpu == "x64") {
+  source_set("media_avx") {
+    configs += [ "//media:media_implementation" ]
+    sources = [
+      "base/vector_math_avx.cc",
+    ]
+    if (is_win) {
+      cflags = [ "/arch:AVX" ]
+    } else {
+      cflags = [ "-mavx" ]
+    }
+  }
+}
+
 # TODO(watk): Refactor tests that could be made to run on Android. See
 # http://crbug.com/570762
 if (media_use_ffmpeg && !is_android) {
   test("ffmpeg_regression_tests") {
     configs += [ "//media:media_config" ]
 
     deps = [
       "//base/test:test_support",
       "//media",
       "//media:test_support",
@@ skipping 82 matching lines @@
   fuzzer_test("media_mp4_avcc_parser_fuzzer") {
     sources = [
       "formats/mp4/mp4_avcc_parser_fuzzer.cc",
     ]
     deps = [
       ":media",
       "//base",
     ]
   }
 }