diff --git a/src/llvm b/src/llvm
index d7342a9a957..ceb177eeefa 160000
--- a/src/llvm
+++ b/src/llvm
@@ -1 +1 @@
-Subproject commit d7342a9a957470bb62c890cf88fc655ccfb755cc
+Subproject commit ceb177eeefa7d67ca29230d2e7e8584f97d4fdad
diff --git a/src/rustllvm/llvm-auto-clean-trigger b/src/rustllvm/llvm-auto-clean-trigger
index 88dd04b6172..73c8bb97a14 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.
-2016-12-08
+2016-12-16