[AVR][NO UPSTREAM] Cherry-pick upstream r361222

dylanmckay · dylanmckay · commit f8add731e4d6 · 2019-06-09T01:11:58.000+12:00
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 56d676b08b956051de3f781e7afd73365d62a7a9
+Subproject commit a5b647806b43a505da004f54e19b41476121c98b
