digraph block {
    N0[label="entry"];
    N1[label="exit"];
    N2[label="expr 14i"];
    N3[label="local x"];
    N4[label="expr x"];
    N5[label="expr 1i"];
    N6[label="expr x > 1i"];
    N7[label="expr return"];
    N8[label="(dummy_node)"];
    N9[label="expr \"unreachable\""];
    N10[label="block { return; \"unreachable\"; }"];
    N11[label="expr if x > 1i { return; \"unreachable\"; }"];
    N12[label="block { let x = 14i; if x > 1i { return; \"unreachable\"; } }"];
    N0 -> N2;
    N2 -> N3;
    N3 -> N4;
    N4 -> N5;
    N5 -> N6;
    N6 -> N7;
    N7 -> N1;
    N8 -> N9;
    N9 -> N10;
    N6 -> N11;
    N10 -> N11;
    N11 -> N12;
    N12 -> N1;
}