hash_local (LocalReg _ _ _) = 117
hash_e (CmmLit l) = hash_lit l
hash_e (CmmLoad e _) = 67 + hash_e e
hash_e (CmmReg r) = hash_reg r
hash_e (CmmMachOp _ es) = hash_lst hash_e es -- pessimal - no operator check
hash_e (CmmRegOff r i) = hash_reg r + i
hash_local (LocalReg _ _ _) = 117
hash_e (CmmLit l) = hash_lit l
hash_e (CmmLoad e _) = 67 + hash_e e
hash_e (CmmReg r) = hash_reg r
hash_e (CmmMachOp _ es) = hash_lst hash_e es -- pessimal - no operator check
hash_e (CmmRegOff r i) = hash_reg r + i