Update LLVM submodule

tmiasko · tmiasko · commit 4a7f2ec49227 · 2020-12-09T00:00:00.000Z
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 7ade8dc4b84142abd3e6d1fb8a0f4111b0bbd571
+Subproject commit 8d78ad13896b955f630714f386a95ed91b237e3d
