Module Or_bottom.Let_syntax
val (let<*) :
'a Flambda2_lattices.Or_bottom.t ->
('a -> 'b Flambda2_lattices.Or_bottom.t) ->
'b Flambda2_lattices.Or_bottom.tval (let<+) :
'a Flambda2_lattices.Or_bottom.t ->
('a -> 'b) ->
'b Flambda2_lattices.Or_bottom.t