https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110313
--- Comment #3 from Andrew Stubbs <ams at gcc dot gnu.org> --- It's curious that this affects the Fiji target only, and not the newer targets at all. There are some additional register options for multiply instructions, some differences to atomics, but mostly the difference is that Fiji's "flat" load and store instructions can't have offsets.