https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113281
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to JuzheZhong from comment #8) > It should be mismatch on both RISC-V and ARM SVE with -fno-vect-cost-model. Changed and checked to see that GCC 13 didn't vectorize the loop for aarch64 SVE either so it is a regression.