[Bug bootstrap/63432] [5 Regression] profiledbootstrap failure with bootstrap-lto

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63432

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
r215830 introduced:

      /* Scale up the frequency by REG_BR_PROB_BASE, to avoid rounding
         errors applying the edge probability when the frequencies are very
         small.  */
      epath->src->count = epath->src->frequency * REG_BR_PROB_BASE;
      FOR_EACH_EDGE (esucc, ei, epath->src->succs)
        esucc->count = apply_probability (esucc->src->count,
                                          esucc->probability);

Can it guarantee that esucc->src->count has been scaled up by
REG_BR_PROB_BASE from esucc->src->frequency?