https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112579
--- Comment #4 from liuhongt at gcc dot gnu.org --- > or normally, it should splitted into groups size 4 + 4 + 3 and vectorize for > 2 group size 4. /* Try to break the group up into pieces. */ if (kind == slp_inst_kind_store Currently, we only split for store.