Method add_argument

tangle/src/node.rs:115–122

(&mut self, ir: &mut IR)

        }

        pub fn add_argument(&mut self, ir: &mut IR) -> PortIdx {
            let port = ir.in_region(self.region, |mut r, ir| {
                let port = r.add_source();
                port
            });
            self.args += 1;
            port
        }

        pub fn add_return(&mut self, ir: &mut IR) -> PortIdx {
            let port = ir.in_region(self.region, |mut r, ir| {