https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103088
--- Comment #8 from Tamar Christina <tnfchris at gcc dot gnu.org> --- (In reply to Aldy Hernandez from comment #7) > Could someone post the relevant configury bits used for the ppc64le case. > > I used: > > runcpu --config=myconfig -a validate --iterations=1 --ignore-errors > --rebuild --noreportable -i test --tune=base 500.perlbench > The test dataset has extra checks that check differences between signed and unsigned zero which -ffast-math turns on and `-fno-unsafe-math-optimizations` doesn't turn off. You'll want to do a ref run instead, so either `-i ref` or just drop the `-i` entirely, since you've already specified `--noreportable` it won't do the `train and ref` automatically. The test dataset is also likely too small to show the issue.
