diff --git a/bin/yk-config b/bin/yk-config
index 8a83f602d..2c7a20f41 100755
--- a/bin/yk-config
+++ b/bin/yk-config
@@ -109,6 +109,7 @@ handle_arg() {
             # Use software-tracer pass
             if [ "${YKB_TRACER}" = "swt" ]; then
                 OUTPUT="${OUTPUT} -Wl,--mllvm=--yk-basicblock-tracer"
+                OUTPUT="${OUTPUT} -Wl,--mllvm=--yk-module-clone"
             fi
             # Disable backend optimisations that Yk can't handle by adding the
             # `optnone` attribute onto every function after high-level IR
diff --git a/ykllvm b/ykllvm
index 1056ba1ca..3ff37cbf0 160000
--- a/ykllvm
+++ b/ykllvm
@@ -1 +1 @@
-Subproject commit 1056ba1caab5a4c49e67d7d33865c653772966e5
+Subproject commit 3ff37cbf086511357547776925f9a8b983533b82