https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70754
--- Comment #5 from Pat Haugen <pthaugen at gcc dot gnu.org> --- (In reply to Pat Haugen from comment #4) > This also occurs on powerpc64/powerpc64le. > I should note that the failure on powerpc64* doesn't start until GCC 7 rev 236043, where a TARGET_SCHED_REASSOCIATION_WIDTH function was added, which I guess makes sense since predictive commoning appears to do some reassociation. The failure also requires -mcpu=power8 or -mcpu=power9 since those are the only 2 values currently where the target hook will return a value > 1.