val from_function_decl : env:Inline_and_simplify_aux.Env.t -> which_variables:Flambda.specialised_to Variable.Map.t -> function_decl:Flambda.function_declaration -> Projection.Set.t
which_variables
maps (existing) inner variables to (existing) outer variables in the manner offree_vars
andspecialised_args
inFlambda.set_of_closures
.The returned projections are
projecting_from
(cf. projection.mli) the "existing inner vars".