node test (i: int) returns (o: int);
var x, y: int;
let
    x = (1 / i) when (i <> 0);
    y = 0 when (not (i <> 0));
    o = merge (i <> 0) x y;
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node main (i: int) returns (o: int);
var garbage: int;
let
    garbage = test(0);
    o = test(1);
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