suffix = fmt.Sprintf(" but got non-%s register %s", descr, RegName(int(r)))
		}
		ctxt.Diag("%v: expected %s register in %s position%s", ins, descr, pos, suffix)
	}
}

func wantNoneReg(ctxt *obj.Link, ins *instruction, pos string, r uint32) {
	if r != obj.REG_NONE {
		ctxt.Diag("%v: expected no register in %s but got register %s", ins, pos, RegName(int(r)))
	}
}