https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125855
Filip Kastl <pheeck at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |pheeck at gcc dot gnu.org
--- Comment #6 from Filip Kastl <pheeck at gcc dot gnu.org> ---
I agree with Josef that running all the benchmarks on the patch would take too
long to be practical. But there's a faster way. I spent some time digging in
LNT and found these speedups happening in the right commit ranges:
5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=1101.80.0
7%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=1284.100.0
11%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=292.100.0
And then it's a matter of checking if the slowdowns reproduce on these
microarchitectures with these options between r17-1576 and r17-1577 (I'll do
that in a minute).
I guess we could provide information like this at least on a per-request basis.
Ping me if that's needed in the future (I don't want to offer this on Josef's
behalf :)).
