--- Comment #5 from Jakub Jelinek <jakub at gcc dot> ---
The problem is that it might be still reachable through both normal and
abnormal edges during cfg and might become unreachable only later (e.g.
inlining or whatever other opt), so we need something that will be able to cope
with it at any time.  Even if we improve decisions from which bbs to add edges
to the ABNORMAL_DISPATCHER, as we use one dispatcher for the whole function and
can mix non-local gotos etc. with returns_twice functions, I think we can't
avoid this problem, r8 e.g. could have a non-local goto to some other bb and so
would have EDGE_ABNORMAL edge to the dispatcher.

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