register["FP"] = RFP
	register["PC"] = RPC
	// Avoid unintentionally clobbering g using R22.
	delete(register, "R22")
	register["g"] = loong64.REG_R22
	registerPrefix := map[string]bool{
		"F":    true,
		"FCSR": true,
		"FCC":  true,
		"R":    true,
		"V":    true,
		"X":    true,
	}

	instructions := make(map[string]obj.As)
	for i, s := range obj.Anames {
		instructions[s] = obj.As(i)
	}