Re: BB execution count in final_prescan_insn

2008-10-16 Thread Steven Bosscher
On Thu, Oct 16, 2008 at 2:20 PM, Joern Rennecke <[EMAIL PROTECTED]> wrote: > Can I now rely on the cfg and basic block execution counts in > FINAL_PRESCAN_INSN ? No. The CFG is destroyed well before we get there, and there are passes in between that can modify jumps. Gr. Steven

BB execution count in final_prescan_insn

2008-10-16 Thread Joern Rennecke
Can I now rely on the cfg and basic block execution counts in FINAL_PRESCAN_INSN ? (Rely as in: we won't encounter dangling pointers, and we get reasonable heuristics if at least -fguess-branch-probability is enabled, and good heuristics if we use relevant profile based feedback) If yes, when di