cmmMapGraph f (Cmm tops) = Cmm $ map (cmmTopMapGraph f) tops
cmmTopMapGraph f (CmmProc h l args g) = CmmProc h l args (f g)
-cmmTopMapGraph _ (CmmData s ds) = CmmData s ds
+cmmTopMapGraph _ (CmmData s ds) = CmmData s ds
cmmMapGraphM f (Cmm tops) = mapM (cmmTopMapGraphM f) tops >>= return . Cmm
cmmTopMapGraphM f (CmmProc h l args g) =