func IsLoong64AMO(op obj.As) bool {
	return loong64.IsAtomicInst(op)
}

var loong64ElemExtMap = map[string]int16{
	"B":  loong64.ARNG_B,
	"H":  loong64.ARNG_H,
	"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,

			if arch.IsMIPSCMP(op) || arch.IsMIPSMUL(op) {
				prog.From = a[0]
				prog.Reg = p.getRegister(prog, op, &a[1])
				break
			}
		} else if p.arch.Family == sys.Loong64 {
			if arch.IsLoong64RDTIME(op) {
				// The Loong64 RDTIME family of instructions is a bit special,
				// in that both its register operands are outputs
				prog.To = a[0]
				if a[1].Type != obj.TYPE_REG {

	ADDV16	$(8<<16), R4, R5	// ADDV16	$524288, R4, R5		// 85200010
	ADDV16	$(32767<<16), R4, R5	// ADDV16	$2147418112, R4, R5	// 85fcff11
	ADDV16	$(16<<16), R4		// ADDV16	$1048576, R4		// 84400010

	// Loong64 atomic memory access instructions
	AMSWAPB		R14, (R13), R12 // ac395c38
	AMSWAPH		R14, (R13), R12 // acb95c38
	AMSWAPW		R14, (R13), R12 // ac396038
	AMSWAPV		R14, (R13), R12 // acb96038