void *pred_reg = get_region_in(reg, pos);
double res, full_freq = get_region_exec_freq (pred_reg);
int n_outs = get_region_n_outs (pred_reg);
void *pred_reg = get_region_in(reg, pos);
double res, full_freq = get_region_exec_freq (pred_reg);
int n_outs = get_region_n_outs (pred_reg);