"W4":  loong64.ARNG_4W,
	"V2":  loong64.ARNG_2V,
}

var loong64LasxArngExtMap = map[string]int16{
	"B32": loong64.ARNG_32B,
	"H16": loong64.ARNG_16H,
	"W8":  loong64.ARNG_8W,
	"V4":  loong64.ARNG_4V,
	"Q2":  loong64.ARNG_2Q,
}

// Loong64RegisterExtension constructs an Loong64 register with extension or arrangement.
func Loong64RegisterExtension(a *obj.Addr, ext string, reg, num int16, isAmount, isIndex bool) error {