Commits
Joe Pamer committed ca6e9098083
Use a MapVector for the conformance tables we plan on iterating, instead of DenseMaps. Not having stable ordering of conformances results in non-deterministic type checker behavior, and causes all sorts of other mischief. (This unblocks rdar://problem/20824955, and also seems to address some other fishy things we've been seeing.) Swift SVN r28374