https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115842
--- Comment #8 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- (In reply to Tamar Christina from comment #7) > (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% What options do you use, we have an AmpereOne machine, like to try to see if it's reproduciable on it.
