https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115842
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |tnfchris at gcc dot gnu.org
--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Hongtao Liu from comment #6)
> I noticed some double-counting of cost in group-candidate (regarding loop
> invariant expressions), this modification reduces the number of instructions
> executed by ~8% for exchange_r binary compiled with -march=x86-64-v3 -O2.
>
Note that this patch causes regressions on AArch64. While exchange improves
slightly I see regressions in: leela, -5%, mcf, xz, x264, deepsjeng -2%,
geomean -1%
