3 ms·
Yes, there are cycles, but you want to draw them as DAGs because the "backlink" (the thing that loops back up to the entry point of a loop) isn't on the same fo
by pbiggar 8y ago
Yes, there are cycles, but you want to draw them as DAGs because the "backlink" (the thing that loops back up to the entry point of a loop) isn't on the same footing as the rest of edges.
- Someone 8y agoThe layout still needs to make room for the back links, doesn’t it? Thinking of that, with CFGs, you know which edges are backlinks, so you can put the backlinks in in reverse direction, do the layout, and then draw them with the arrow heads at the “wrong” side. So, yes, I see that it can be useful.