------- Comment #7 from steven at gcc dot gnu dot org 2007-11-05 22:19 ------- Re. comment #5, yes the code is right to add the frequencies together. After cross jumping, the tail-merged block is traversed with the combined frequencies of the new incoming edges, so adding the frequencies is correct.
In the summation, the numerator overflows. I'm not sure how to catch this easily. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33737
