Commits
Adrian Prantl committed 98383a5c6a4
Debug info: Use WeakVHs in DIRefMap so LLDB can safely invoke IRGen more than once (at least as far as IRGenDebugInfo is concerned). No new testcases, but it comes with new assertions. Part of <rdar://problem/15283227> A crash in llvm's getFnAttributes when IRGen is called more than once. Swift SVN r18214