def get_pred_val(bool is_fp_op, int reg):
       tb = int_reg if is_fp_op else fp_reg
       if (!tb[reg].enabled):
          return ~0x0, False       // all enabled; no zeroing
       tb = int_pred if is_fp_op else fp_pred
       if (!tb[reg].enabled):
          return ~0x0, False       // all enabled; no zeroing
       predidx = tb[reg].predidx   // redirection occurs HERE
       predicate = intreg[predidx] // actual predicate HERE
       if (tb[reg].inv):
          predicate = ~predicate   // invert ALL bits
       return predicate, tb[reg].zero