https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114061
--- Comment #4 from Tamar Christina <tnfchris at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #3) > Confirmed. > > Though maybe we should drop them in the vectorized version of the loop. HW > prefetchers usually do a decent job and sometimes (maybe most) SW hinted > prefetches interfere with the HW prefetchers. definitely agree that I'm not sure how useful they are, but some customers definitely seem to want them.