Upstream Swift/LLVM integrated.
diff --git a/swift b/swift
index 9c2eb43..f2cf051 160000
--- a/swift
+++ b/swift
@@ -1 +1 @@
-Subproject commit 9c2eb436fe79acb6ad36149d9d6d68e889104e8a
+Subproject commit f2cf0510d6e25911e9babada46e0025862bd00cd