Commits
Joe Groff committed 442a51ef36b
SIL: Fix Verifier. The Verifier wasn't actually verifying function bodies, because I neglected to visit the actual basic blocks after checking the entry point arguments in verifySILFunction. This revealed a SILType identity issue where TypeConverter::getLoweredType and SILType::getEmptyTupleType returned non-identical SILTypes for the empty tuple type; fix that by removing SILType::getEmptyTupleType, moving TypeConverter into SILModule, and forcing all SILType creation through TypeConverter. Swift SVN r4616