https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115395
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- In fact, the main loop ends up not using SLP but the epilogue one does and we end up setting STMT_VINFO_REDUC_EPILOGUE_ADJUSTMENT which we do not support for SLP. The question is whether to add that support or simply fail (but this is code generation). It's probably easiest to transitionally implement support and rip it out again later.
