diff --git a/src/llvm b/src/llvm
index 7801978ec1f36..ac1c94226e9fa 160000
--- a/src/llvm
+++ b/src/llvm
@@ -1 +1 @@
-Subproject commit 7801978ec1f3637fcda1b564048ebc732bf586af
+Subproject commit ac1c94226e9fa17005ce7e2dd52dd6d1875f3137
diff --git a/src/rustllvm/llvm-auto-clean-trigger b/src/rustllvm/llvm-auto-clean-trigger
index ea8d59290df2e..b12e25bba694f 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.
-2016-09-17
+2016-10-10