// amd64:"POPCNTL"
	// arm64:"VCNT","VUADDLV"
	// s390x:"POPCNT"
	// ppc64x:"POPCNTW"
	// wasm:"I64Popcnt"
	return bits.OnesCount32(n)
}

func OnesCount16(n uint16) int {
	// amd64/v2:-".*x86HasPOPCNT" amd64/v3:-".*x86HasPOPCNT"
	// amd64:"POPCNTL"
	// arm64:"VCNT","VUADDLV"
	// s390x:"POPCNT"
	// ppc64x:"POPCNTW"
	// wasm:"I64Popcnt"
	return bits.OnesCount16(n)

		{name: "POPCNTD", argLength: 1, reg: gp11, asm: "POPCNTD"}, // number of set bits in arg0
		{name: "POPCNTW", argLength: 1, reg: gp11, asm: "POPCNTW"}, // number of set bits in each word of arg0 placed in corresponding word
		{name: "POPCNTB", argLength: 1, reg: gp11, asm: "POPCNTB"}, // number of set bits in each byte of arg0 placed in corresponding byte

	ASRDCC
	AEXTSWSLI
	AEXTSWSLICC
	ASTDCCC
	ATD
	ASETB

	/* 64-bit pseudo operation */
	ADWORD
	AREMD
	AREMDU

	/* more 64-bit operations */
	AHRFID
	APOPCNTD
	APOPCNTW
	APOPCNTB
	ACNTTZW
	ACNTTZWCC
	ACNTTZD
	ACNTTZDCC
	ACOPY
	APASTECC
	ADARN
	AMADDHD
	AMADDHDU
	AMADDLD

	/* Vector */
	ALVEBX
	ALVEHX
	ALVEWX
	ALVX
	ALVXL

	HasOSXSAVE          bool // OS supports XSAVE/XRESTOR for saving/restoring XMM registers.
	HasPCLMULQDQ        bool // PCLMULQDQ instruction - most often used for AES-GCM
	HasPOPCNT           bool // Hamming weight instruction POPCNT.
	HasRDRAND           bool // RDRAND instruction (on-chip random number generator)
	HasRDSEED           bool // RDSEED instruction (on-chip random number generator)