[Jasper_]

Functional programming can be represented as a graph, where calls are directed edges. Flow control is often analyzed in graph form in real compilers:

https://en.wikipedia.org/wiki/Control_flow_graph

[adamnemecek]

It's not just functional programming (but I do agree that it's better in functional programming). All the reverse engineering tools have some feature to represent assembly as a CFG which is super helpful.