https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64580
--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to Segher Boessenkool from comment #3) > Hi again, > > Unfortunately it seems I am unable to build a version of GCC that is > compatible with that (every version I tried either complains or ICEs). Yes, it's unfortunate that there is no stable interface at all. Every patch in this area potentially breaks things and there were a couple of them in the last few days. > Maybe you can answer the above questions yourself? How often > is rs6000_output_mi_thunk called (+ some sense of scale, e.g. > how many "real" functions are emitted)? Is there a real hotspot > in rs6000_stack_info itself? I haven't been able to get it above > 0.16% of cpu time, and no hotspots. I will try to collect some callgrind data later today. > Can perf be used to analyze results on a different machine than > used to generate the data? If the version of perf is the same then yes.
