procedure List.4 (#Attr.2, #Attr.3):
    let List.139 : List I64 = lowlevel ListAppend #Attr.2 #Attr.3;
    ret List.139;

procedure Test.0 ():
    let Test.2 : List I64 = Array [1i64];
    let Test.3 : I64 = 2i64;
    let Test.1 : List I64 = CallByName List.4 Test.2 Test.3;
    ret Test.1;