fusion
vertical loop combination
<programming> A {program transformation} where a {composition}
of two functions is replaced by in-lining them and combining
their bodies. E.g.
f x = g (h x) ==> f x = g (2 * x)
g x = x + 1 f x = 2 * x + 1
h x = 2 * x
This has the beneficial effect of reducing the number of
function calls. It can be especially useful where the
intermediate result is a large data structure which can be
eliminated.
See also {vertical loop combination}.
(1994-12-05)