https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92557
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 47291 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47291&action=edit gcc10-pr92557.patch I'd go with this fix. The problem is that with just -maltivec, V2DImode is present, but not supported, so the vector type created for V2DImode actually has TYPE_MODE_RAW V2DImode, but TYPE_MODE TImode.