Why does GHC represent recursion in Haskell with recursive binders instead of a fixpoint operator?
GHC's Core data type represents recursion with recursive binders in the Let constructor; as I understand it, all let expressions in Haskell are effectively let rec expressions. Why does GHC use this method of representing recursion instead of an atomic fixpoint operator?

GHC's Core data type represents recursion with recursive binders in the Let
constructor; as I understand it, all let
expressions in Haskell are effectively let rec
expressions. Why does GHC use this method of representing recursion instead of an atomic fixpoint operator?