https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98877
--- Comment #9 from Tamar Christina <tnfchris at gcc dot gnu.org> --- While RA should be able to deal with this, shouldn't we also just lower TBLs in gimple? This no reason why this can't be a VEC_PERM_EXPR which would also get the copies removed at the gimple level and allows us to optimize this to something else depending on the index.
