branch probabilities on multiway branches

[Jan Hubicka]

> Hi All,
> 
> The following bit of code in predict.c implies branch probabilities
> are strictly evenly distributed for multiway branches at present. The
> comment suggests it is possible to generate better estimates for more
> generic cases, apart from being involved. Could anyone point me to
> the reference and/or if an implementation exists already.

There is Wu & Larus paper cited in the comment at the begging of file.

Honza