https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95730
--- Comment #3 from Andrew Stubbs <ams at gcc dot gnu.org> --- The GCN port does not define a scalar_mode_supported, and I think the default definition is allowing TImode (as long long int). As I said, the SLP fake-vector load/store use it fine as a substitute for V4SI or V2DI. Probably this is a bug we should fix. I've been planning to implement additional vector sizes, so I can fold this fix into that work and not regress anything in SLP (hopefully).
