message: Use "-O3" for optimized TFLite build
  This gives about 2x improvement with benchmark_model tool for Linux targets.
  Doesn't apply to Windows target since "/O2" is already maximum speed.
diff: @@ -13,12 +13,8 @@ def tflite_copts():
  copts = [
  "-DFARMHASH_NO_CXX_STRING",
  ] + select({
  - clean_dep("//tensorflow:android_arm64"): [
  - "-O3",
  - ],
  clean_dep("//tensorflow:android_arm"): [
  "-mfpu=neon",
  - "-O3",
  ],
  clean_dep("//tensorflow:ios_x86_64"): [
  "-msse4.1",
  @@ -30,6 +26,10 @@ def tflite_copts():
  "//conditions:default": [
  "-Wno-sign-compare",
  ],
  + }) + select({
  + clean_dep("//tensorflow:windows"): [],
  + clean_dep("//tensorflow:optimized"): ["-O3"],
  + "//conditions:default": [],
  })
  return copts
  