trying to understand a bit more about bitcode concept. Since a developer submits a bitcode for apple watch, does that mean he can't optimize his own app for per

trying to understand a bit more about bitcode concept. Since a developer submits a bitcode for apple watch, does that mean he can't optimize his own app for performance? FWIK, on android you can still optimize your app at assembly level and i think that's what motivates developers at times. Remember the iphone camera high speed shot app, that was hand coded to be fast on iphone.