-- main.mcl --
$f1 = func($x) { $x }
$f2 = func($x) { $x + $x }
$id = func($y) { $y }
$f = if ($id(true)) {$f1} else {$f2}

# $f is always $f1, so in theory, this call does not need a sub-graph.
# But does our optimization support this corner case yet?
$name = $f("foo")
test "${name}" {}
-- OUTPUT --
Vertex: test[foo]