Module Js_of_ocaml_compiler__Pure_fun
val pure_expr : Js_of_ocaml_compiler.Code.Var.Set.t -> Js_of_ocaml_compiler.Code.expr -> bool
val pure_instr : Js_of_ocaml_compiler.Code.Var.Set.t -> Js_of_ocaml_compiler.Code.instr -> bool
val f : Js_of_ocaml_compiler.Code.program -> Js_of_ocaml_compiler.Code.Var.Set.t