Commits
Joe Groff committed 34e0f035e1f
IRGen: Create NonFixedUnionTypeInfos for dynamic singleton unions. Singletons should be the easiest case to get up and running, since everything just needs to forward down to the element type. Start things off by setting up a NonFixedUnionTypeInfo class and using it to create the TypeInfo for the non-fixed case in SingletonUnionImplStrategy::completeUnionTypeLayout. Swift SVN r7994