"W":  loong64.ARNG_W,
	"V":  loong64.ARNG_V,
	"BU": loong64.ARNG_BU,
	"HU": loong64.ARNG_HU,
	"WU": loong64.ARNG_WU,
	"VU": loong64.ARNG_VU,
}

var loong64LsxArngExtMap = map[string]int16{
	"B16": loong64.ARNG_16B,
	"H8":  loong64.ARNG_8H,
	"W4":  loong64.ARNG_4W,
	"V2":  loong64.ARNG_2V,
}

var loong64LasxArngExtMap = map[string]int16{
	"B32": loong64.ARNG_32B,
	"H16": loong64.ARNG_16H,

		return 0, errors.New("expect V0 through V31; found: " + name)
	}
	if reg < 0 {
		return 0, errors.New("invalid register number: " + name)
	}
	switch arng {
	case "B8":
		curSize = 0
		curQ = 0
	case "B16":
		curSize = 0
		curQ = 1
	case "H4":
		curSize = 1
		curQ = 0
	case "H8":
		curSize = 1
		curQ = 1
	case "S2":
		curSize = 2
		curQ = 0
	case "S4":
		curSize = 2
		curQ = 1