-- Copyright 2023 Stanford University
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.

-- fails-with:
-- optimize_predicate2.rg:30: cannot predicate if statement: body is not side-effect free
--     return f()
--          ^

import "regent"

task g() return true end

task f() return 123 end

task main()
  var x = g()
  __demand(__predicate)
  if x then
    return f()
  end
end
main:compile()
