"tf.opA"() : () -> ()
          tf_device.return
        }) {device = "CORE_0"} : () -> ()
        tf_device.return
      }
      tf_executor.yield
    }
    tf_executor.fetch
  }
  func.return
}

// CHECK: "tf.opA"
// device = "CORE_0"
// CHECK: _parallel_execution_ids = "r0:0"
// CHECK: "tf.opA"
// device = "CORE_0"
// CHECK: _parallel_execution_ids = "r0:1"