[erlang-questions] '--' BIF to be used with caution?

[Mikael Pettersson]

Richard O'Keefe writes:
 > HiPE makes more use of -- than I expected;
 > anyone in the HiPE team care to comment?

Only that numerous people with different programming style preferences
have been involved in the development of HiPE.

Are there any particular uses of -- that you find questionable?
(I'm always keen on eliminating useless overheads.)