Inductive contextlist' : (exprlist -> expr) -> Prop :=
  | contextlist'_call: forall r1 rl0 ty C,
      context RV RV C ->
      contextlist' (fun rl => C (Ecall r1 (exprlist_app rl0 rl) ty))
  | contextlist'_builtin: forall ef tyargs rl0 ty C,
      context RV RV C ->
      contextlist' (fun rl => C (Ebuiltin ef tyargs (exprlist_app rl0 rl) ty)).Inductive contextlist' : (exprlist -> expr) -> Prop :=
  | contextlist'_call: forall r1 rl0 ty C,
      context RV RV C ->
      contextlist' (fun rl => C (Ecall r1 (exprlist_app rl0 rl) ty))
  | contextlist'_builtin: forall ef tyargs rl0 ty C,
      context RV RV C ->
      contextlist' (fun rl => C (Ebuiltin ef tyargs (exprlist_app rl0 rl) ty)).Inductive contextlist' : (exprlist -> expr) -> Prop :=
  | contextlist'_call: forall r1 rl0 ty C,
      context RV RV C ->
      contextlist' (fun rl => C (Ecall r1 (exprlist_app rl0 rl) ty))
  | contextlist'_builtin: forall ef tyargs rl0 ty C,
      context RV RV C ->
      contextlist' (fun rl => C (Ebuiltin ef tyargs (exprlist_app rl0 rl) ty)).

Lemma rval_list_all_values: forall vl rl, exprlist_all_values (rval_list vl rl).