Commits
Joe Groff committed d70136a046c
IRGen: Don't eagerly emit protocol descriptors for imported protocols. ObjC protocol descriptors are uniqued by the ObjC runtime and lazily emitted by Clang, so we shouldn't burn time eagerly emitting descriptors for every protocol in the universe. Addresses some of the performance issue in <rdar://problem/16520314>. Swift SVN r15924