procedure List.18 (List.145, List.146, List.147):
    let List.536 : U64 = 0i64;
    let List.537 : U64 = CallByName List.6 List.145;
    let List.535 : [<r>C {}, C *self {{}, []}] = CallByName List.86 List.145 List.146 List.147 List.536 List.537;
    ret List.535;

procedure List.6 (#Attr.2):
    let List.546 : U64 = lowlevel ListLen #Attr.2;
    ret List.546;

procedure List.66 (#Attr.2, #Attr.3):
    let List.545 : [] = lowlevel ListGetUnsafe #Attr.2 #Attr.3;
    ret List.545;

procedure List.86 (#Derived_gen.13, #Derived_gen.14, #Derived_gen.15, #Derived_gen.16, #Derived_gen.17):
    joinpoint List.538 List.148 List.149 List.150 List.151 List.152:
        let List.540 : Int1 = CallByName Num.22 List.151 List.152;
        if List.540 then
            let List.544 : [] = CallByName List.66 List.148 List.151;
            let List.153 : [<r>C {}, C *self {{}, []}] = CallByName Test.29 List.149 List.544 List.150;
            let List.543 : U64 = 1i64;
            let List.542 : U64 = CallByName Num.51 List.151 List.543;
            jump List.538 List.148 List.153 List.150 List.542 List.152;
        else
            dec List.148;
            ret List.149;
    in
    jump List.538 #Derived_gen.13 #Derived_gen.14 #Derived_gen.15 #Derived_gen.16 #Derived_gen.17;

procedure Num.22 (#Attr.2, #Attr.3):
    let Num.293 : Int1 = lowlevel NumLt #Attr.2 #Attr.3;
    ret Num.293;

procedure Num.51 (#Attr.2, #Attr.3):
    let Num.292 : U64 = lowlevel NumAddWrap #Attr.2 #Attr.3;
    ret Num.292;

procedure Test.10 (Test.66, #Attr.12):
    let Test.9 : {} = UnionAtIndex (Id 0) (Index 0) #Attr.12;
    let #Derived_gen.20 : Int1 = lowlevel RefCountIsUnique #Attr.12;
    if #Derived_gen.20 then
        free #Attr.12;
        ret Test.9;
    else
        decref #Attr.12;
        ret Test.9;

procedure Test.10 (Test.66, #Attr.12):
    let Test.9 : {} = UnionAtIndex (Id 0) (Index 0) #Attr.12;
    ret Test.9;

procedure Test.14 (Test.45, #Attr.12):
    let Test.13 : {{}, []} = UnionAtIndex (Id 1) (Index 1) #Attr.12;
    let Test.12 : [<r>C {}, C *self {{}, []}] = UnionAtIndex (Id 1) (Index 0) #Attr.12;
    joinpoint #Derived_gen.18:
        let Test.50 : {} = Struct {};
        let Test.51 : U8 = GetTagId Test.12;
        joinpoint Test.52 Test.15:
            let Test.16 : [C {}, C []] = CallByName Test.20 Test.15 Test.13;
            let Test.48 : {} = Struct {};
            let Test.49 : U8 = GetTagId Test.16;
            switch Test.49:
                case 0:
                    let Test.47 : {} = CallByName Test.10 Test.48 Test.16;
                    ret Test.47;
            
                default:
                    let Test.47 : {} = CallByName Test.25 Test.48 Test.16;
                    ret Test.47;
            
        in
        switch Test.51:
            case 0:
                let Test.53 : {} = CallByName Test.10 Test.50 Test.12;
                jump Test.52 Test.53;
        
            default:
                let Test.53 : {} = CallByName Test.14 Test.50 Test.12;
                jump Test.52 Test.53;
        
    in
    let #Derived_gen.19 : Int1 = lowlevel RefCountIsUnique #Attr.12;
    if #Derived_gen.19 then
        free #Attr.12;
        jump #Derived_gen.18;
    else
        inc Test.12;
        decref #Attr.12;
        jump #Derived_gen.18;

procedure Test.20 (Test.21, Test.18):
    let Test.23 : [C {}, C []] = CallByName Test.32 Test.21 Test.18;
    ret Test.23;

procedure Test.25 (Test.57, #Attr.12):
    let Test.24 : [] = UnionAtIndex (Id 1) (Index 0) #Attr.12;
    let Test.60 : Str = "voided tag constructor is unreachable";
    Crash Test.60

procedure Test.29 (Test.30, Test.31, Test.28):
    let Test.42 : {{}, []} = Struct {Test.28, Test.31};
    let Test.41 : [<r>C {}, C *self {{}, []}] = CallByName Test.5 Test.30 Test.42;
    ret Test.41;

procedure Test.3 (Test.9):
    let Test.65 : [<r>C {}, C *self {{}, []}] = TagId(0) Test.9;
    ret Test.65;

procedure Test.3 (Test.9):
    let Test.72 : [C {}, C []] = TagId(0) Test.9;
    ret Test.72;

procedure Test.32 (Test.61, #Attr.12):
    let Test.31 : [] = StructAtIndex 1 #Attr.12;
    let Test.28 : {} = StructAtIndex 0 #Attr.12;
    let Test.63 : [C {}, C []] = CallByName Test.33 Test.31;
    ret Test.63;

procedure Test.33 (Test.69):
    let Test.71 : {} = Struct {};
    let Test.70 : [C {}, C []] = CallByName Test.3 Test.71;
    ret Test.70;

procedure Test.4 (Test.12, Test.13):
    let Test.46 : [<r>C {}, C *self {{}, []}] = TagId(1) Test.12 Test.13;
    ret Test.46;

procedure Test.5 (Test.17, Test.18):
    let Test.19 : [<r>C {}, C *self {{}, []}] = CallByName Test.4 Test.17 Test.18;
    ret Test.19;

procedure Test.6 (Test.27, Test.28):
    let Test.64 : {} = Struct {};
    let Test.38 : [<r>C {}, C *self {{}, []}] = CallByName Test.3 Test.64;
    let Test.37 : [<r>C {}, C *self {{}, []}] = CallByName List.18 Test.27 Test.38 Test.28;
    ret Test.37;

procedure Test.76 (Test.77):
    let Test.78 : {{}, []} = UnionAtIndex (Id 0) (Index 0) Test.77;
    dec Test.77;
    let Test.79 : {} = StructAtIndex 0 Test.78;
    ret Test.79;

procedure Test.80 (Test.81):
    let Test.82 : {{}, []} = UnionAtIndex (Id 0) (Index 0) Test.81;
    dec Test.81;
    let Test.83 : [] = StructAtIndex 1 Test.82;
    ret Test.83;

procedure Test.84 (Test.86, #Attr.12):
    let Test.87 : U8 = GetTagId #Attr.12;
    switch Test.87:
        case 0:
            let Test.85 : {} = CallByName Test.10 Test.86 #Attr.12;
            ret Test.85;
    
        default:
            let Test.85 : {} = CallByName Test.14 Test.86 #Attr.12;
            ret Test.85;
    

procedure Test.0 ():
    let Test.35 : List [] = Array [];
    let Test.36 : {} = Struct {};
    let Test.34 : [<r>C {}, C *self {{}, []}] = CallByName Test.6 Test.35 Test.36;
    ret Test.34;