cseExpr env (Note n e) = Note n (cseExpr env e)
cseExpr env (Cast e co) = Cast (cseExpr env e) co
cseExpr env (Lam b e) = let (env', b') = addBinder env b
in Lam b' (cseExpr env' e)
cseExpr env (Let bind e) = let (env', bind') = cseBind env bind
in Let bind' (cseExpr env' e)
cseExpr env (Note n e) = Note n (cseExpr env e)
cseExpr env (Cast e co) = Cast (cseExpr env e) co
cseExpr env (Lam b e) = let (env', b') = addBinder env b
in Lam b' (cseExpr env' e)
cseExpr env (Let bind e) = let (env', bind') = cseBind env bind
in Let bind' (cseExpr env' e)