In case the same src BB targets to the same dest BB in different conditions/edges, such as switch-cases, we should use prob[SrcBB->SuccIndx] instead of prob[SrcBB->DstBB] to get probability.
In case the same src BB targets to the same dest BB in different conditions/edges, such as switch-cases, we should use prob[SrcBB->SuccIndx] instead of prob[SrcBB->DstBB] to get probability.