diff --git a/src/llvm b/src/llvm
index c1d962263bf..3ec14daffb4 160000
--- a/src/llvm
+++ b/src/llvm
@@ -1 +1 @@
-Subproject commit c1d962263bf76a10bea0c761621fcd98d6214b2e
+Subproject commit 3ec14daffb4b8c0604df50b7fb0ab552f456e381
diff --git a/src/rustllvm/llvm-auto-clean-trigger b/src/rustllvm/llvm-auto-clean-trigger
index 37fded948e1..768ba2d5b77 100644
--- a/src/rustllvm/llvm-auto-clean-trigger
+++ b/src/rustllvm/llvm-auto-clean-trigger
@@ -1,4 +1,4 @@
 # If this file is modified, then llvm will be forcibly cleaned and then rebuilt.
 # The actual contents of this file do not matter, but to trigger a change on the
 # build bots then the contents should be changed so git updates the mtime.
-2016-10-29
+2016-12-01