Switch from fallthrough back to jump.
@@ -64,7 +64,7 @@ ebb2:
; nextln: v2 = select v3, v1, v1
; nextln: trapz v3, user0
; nextln: brnz v3, ebb2
-; nextln: fallthrough ebb1
+; nextln: jump ebb1
function %irsub_imm(i32) -> i32 {
ebb0(v0: i32):
