Ltac unfold_localdef_name QQ Q :=
  match Q with
  | nil => idtac
  | cons ?Qh ?Qt =>
    match Qh with
    | temp ?n _ => unfold n in QQ
    | lvar ?n _ _ => unfold n in QQ
    | _ => idtac
    end;
    unfold_localdef_name QQ Qt
  end.Ltac unify_for_go_lower :=
    match goal with |- fold_right_PROP_SEP (VST_floyd_app ?A ?B) ?C = _ =>
      repeat match B with context [(?x = ?y) :: _] =>
       has_evar x; progress (unify x y)
      end
    end.Ltac simply_msubst_extract_locals :=
  unfold msubst_extract_locals, msubst_extract_local, VST_floyd_map;
  cbv iota zeta beta;
  simpl_PTree_get; simpl_eqb_type.Ltac solve_clean_LOCAL_right :=
  solve
    [ simple apply clean_LOCAL_right_sep_lift
    | simple apply clean_LOCAL_right_local_lift
    | simple apply clean_LOCAL_right_prop
    | simple apply clean_LOCAL_right_TT
    | simple apply clean_LOCAL_right_FF
    | try unfold tc_lvalue; simple apply clean_LOCAL_right_tc_lvalue
    | try unfold tc_expr; simple apply clean_LOCAL_right_tc_expr
    | try unfold tc_LR; simple apply clean_LOCAL_right_tc_LR
    | try unfold tc_efield; simple apply clean_LOCAL_right_tc_efield
    | try unfold tc_exprlist; simple apply clean_LOCAL_right_tc_exprlist
    | simple apply clean_LOCAL_right_tc_expropt
    | simple apply clean_LOCAL_right_canon;
      simply_msubst_extract_locals;
      unify_for_go_lower;
      unfold VST_floyd_app;
      unfold fold_right_PROP_SEP, fold_right_and_True;
      unfold fold_right_sepcon; fold fold_right_sepcon; rewrite ?sepcon_emp;
      reflexivity
    | simple apply clean_LOCAL_right_eval_lvalue; solve_msubst_eval_lvalue
    | simple apply clean_LOCAL_right_eval_expr; solve_msubst_eval_expr
    | simple apply clean_LOCAL_right_andp; solve_clean_LOCAL_right
    | simple apply clean_LOCAL_right_tc_andp; solve_clean_LOCAL_right
    | simple apply clean_LOCAL_right_EX;
      let a := fresh "a" in
      intro a;
      eexists;
      split;
      [ solve_clean_LOCAL_right
      | match goal with
        | |- ?t = _ => super_pattern t a; reflexivity
        end
      ]
    | fail 1000 "The right hand side is messed up; perhaps you inadvertently did something like 'simpl in *' that changes POSTCONDITION into a form that Floyd cannot recognize.  You may do 'unfold abbreviate in POSTCONDITION' in your previous proof steps to inspect it"
    ].Ltac simpl_app_localdefs_tc :=
  unfold localdefs_tc, localdef_tc;
  unfold VST_floyd_map, VST_floyd_concat, VST_floyd_app;
  cbv iota zeta beta;
  simpl_temp_types_get;
  cbv iota zeta beta.Ltac clean_LOCAL_canon_mix :=
  eapply_clean_LOCAL_right_spec;
  [reflexivity | prove_local2ptree | solve_clean_LOCAL_right | simpl_app_localdefs_tc].

Lemma is_int_Vint_intro: forall sz sg v (P: Prop), ((exists i, v = Vint i /\ is_int sz sg (Vint i)) -> P) -> (is_int sz sg v -> P).