In mixing bowl stir half of the ice cream until of spreading consistency;
spread evenly in pie crust. Top with half of the cherry pie filling. Freeze
until filling is partially frozen, about 45 minutes. Stir remaining ice
cream to spreading consistency; spread over partially frozen pie filling in
crust. Freeze until firm, at least 3 hours. Just before serving, top with
remaining pie filling. Garnish with whipped topping if desired.
