https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65657
--- Comment #1 from Jonathan Creekmore <jonathan.creekm...@synapse-wireless.com> --- Apparently, PR target/52484 covered one of the cases in avr.md, but not the general case of a call to __xload_{1,2,3}. I think adding (clobber (reg:MOVMODE 22)) there as well might fix it.