https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65171
--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- Yes, this is unrelated and not really a problem. Something has caused us to recently start spilling a couple of nonvolatile vector registers to the stack for this test case, resulting in the failure. I'm going to look into why this occurred (introduced on 2/13). Bill