def loopless1(self):
        """
        A simple CFG corresponding to the following code structure:

            c = (... if ... else ...) + ...
            return b + c
        """
        g = self.from_adj_list({0: [18, 12], 12: [21], 18: [21], 21: []})
        g.set_entry_point(0)
        g.process()
        return g

        A simple CFG corresponding to the following code structure:

            c = (... if ... else ...) + ...
            return b + c
        
numba/tests/test_flow_control.py