Remove obsolete tactic wp_strip_later.

heap_lang/wp_tactics.v

@@ -5,14 +5,6 @@ Import uPred.
 (** wp-specific helper tactics *)
 (* First try to productively strip off laters; if that fails, at least
    cosmetically get rid of laters in the conclusion. *)
-Ltac wp_strip_later :=
-  let rec go :=
-    lazymatch goal with
-    | |- _ ⊑ (_ ★ _) => apply sep_mono; go
-    | |- _ ⊑ ▷ _ => apply later_intro
-    | |- _ ⊑ _ => reflexivity
-    end
-  in intros_revert ltac:(first [ strip_later | etrans; [|go] ] ).
 Ltac wp_bind K :=
   lazymatch eval hnf in K with
   | [] => idtac
@@ -25,7 +17,7 @@ Ltac wp_finish :=
   | |- _ ⊑ wp _ _ _ =>
      etrans; [|eapply wp_value_pvs; reflexivity];
      (* sometimes, we will have to do a final view shift, so only apply
-     wp_value if we obtain a consecutive wp *)
+     pvs_intro if we obtain a consecutive wp *)
      try (eapply pvs_intro;
           match goal with |- _ ⊑ wp _ _ _ => simpl | _ => fail end)
   | _ => idtac
@@ -42,7 +34,7 @@ Tactic Notation "wp_rec" ">" :=
                           wp_finish
                         end)
                end).
-Tactic Notation "wp_rec" := wp_rec>; wp_strip_later.
+Tactic Notation "wp_rec" := wp_rec>; try strip_later.
 
 Tactic Notation "wp_lam" ">" :=
   match goal with
@@ -52,7 +44,7 @@ Tactic Notation "wp_lam" ">" :=
        wp_bind K; etrans; [|eapply wp_lam; reflexivity]; wp_finish
     end)
   end.
-Tactic Notation "wp_lam" := wp_lam>; wp_strip_later.
+Tactic Notation "wp_lam" := wp_lam>; try strip_later.
 
 Tactic Notation "wp_let" ">" := wp_lam>.
 Tactic Notation "wp_let" := wp_lam.
@@ -72,7 +64,7 @@ Tactic Notation "wp_op" ">" :=
        wp_bind K; etrans; [|eapply wp_un_op; reflexivity]; wp_finish
     end)
   end.
-Tactic Notation "wp_op" := wp_op>; wp_strip_later.
+Tactic Notation "wp_op" := wp_op>; try strip_later.
 
 Tactic Notation "wp_if" ">" :=
   match goal with
@@ -83,7 +75,7 @@ Tactic Notation "wp_if" ">" :=
        etrans; [|apply wp_if_true || apply wp_if_false]; wp_finish
     end)
   end.
-Tactic Notation "wp_if" := wp_if>; wp_strip_later.
+Tactic Notation "wp_if" := wp_if>; try strip_later.
 
 Tactic Notation "wp_focus" open_constr(efoc) :=
   match goal with
@@ -95,7 +87,7 @@ Tactic Notation "wp" ">" tactic(tac) :=
   match goal with
   | |- _ ⊑ wp ?E ?e ?Q => reshape_expr e ltac:(fun K e' => wp_bind K; tac)
   end.
-Tactic Notation "wp" tactic(tac) := (wp> tac); [wp_strip_later|..].
+Tactic Notation "wp" tactic(tac) := (wp> tac); [try strip_later|..].
 
 (* In case the precondition does not match.
    TODO: Have one tactic unifying wp and ewp. *)