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Re: [Bug bootstrap/55051] [4.8 Regression] profiledbootstrap failed
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: tejohnson at google dot com <gcc-bugzilla at gcc dot gnu dot org>
- Cc: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 15 Nov 2012 02:42:45 +0100
- Subject: Re: [Bug bootstrap/55051] [4.8 Regression] profiledbootstrap failed
- References: <bug-55051-4@http.gcc.gnu.org/bugzilla/> <bug-55051-4-g86ig8oHZz@http.gcc.gnu.org/bugzilla/>
> Oh got it - it is this one, right?:
>
> profiling:/home/tejohnson/extra/gcc_trunk_3_obj/libcpp/files.gcda:Invocation
> mismatch - some data files may have been removed
Yes, it is this one.
>
> I think this one was there before, but I had to modify it after my
> histogram change. I will take a look.
Also could you please make a patch to make maybe_hot_count_p to use
hitogram driven cutoff? Otherwise the histograms would be completely
unused for 4.8 and it would be stupid to carry all the extra data
for no use. I would like this to be done soon, since I plan to base
some of inliner re-tunning to be based on this.
The mismatch is independent problem, yes.
Honza