return 1
	}
	// amd64:"BTL\t[$]0"
	if a&0x1 != 0 {
		return 1
	}
	return 0
}

func biton64(a, b uint64) (n uint64) {
	// amd64:"BTSQ"
	n += b | (1 << (a & 63))

	// amd64:"BTSQ\t[$]63"
	n += a | (1 << 63)

	// amd64:"BTSQ\t[$]60"
	n += a | (1 << 60)

	// amd64:"ORQ\t[$]1"
	n += a | (1 << 0)

	return n
}

func bitoff64(a, b uint64) (n uint64) {
	// amd64:"BTRQ"

	// riscv64:"FABSD\t"
	// wasm:"F64Abs"
	// arm/6:"ABSD\t"
	// mips64/hardfloat:"ABSD\t"
	// mips/hardfloat:"ABSD\t"
	sink64[0] = math.Abs(x)

	// amd64:"BTRQ\t[$]63","PXOR"    (TODO: this should be BTSQ)
	// s390x:"LNDFR\t",-"MOVD\t"     (no integer load/store)
	// ppc64x:"FNABS\t"
	sink64[1] = -math.Abs(y)
}

// Check that it's using integer registers
func abs32(x float32) float32 {

	// ppc64x/power8:"NEG","SUBC","ANDN","POPCNTD"
	// ppc64x/power9:"SUBC","CNTTZD"
	return bits.TrailingZeros64(1 - n)
}

func TrailingZeros32(n uint32) int {
	// amd64/v1,amd64/v2:"BTSQ\\t\\$32","BSFQ"
	// amd64/v3:"TZCNTL"
	// 386:"BSFL"
	// arm:"CLZ"
	// arm64:"RBITW","CLZW"
	// s390x:"FLOGR","MOVWZ"
	// ppc64x/power8:"ANDN","POPCNTW"
	// ppc64x/power9: "CNTTZW"
	// wasm:"I64Ctz"

		return true
	}
	return false
}
func rewriteValueAMD64_OpAMD64ORQ(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (ORQ (SHLQ (MOVQconst [1]) y) x)
	// result: (BTSQ x y)
	for {
		for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
			if v_0.Op != OpAMD64SHLQ {
				continue
			}
			y := v_0.Args[1]
			v_0_0 := v_0.Args[0]

				{1, 49135}, // AX CX DX BX BP SI DI R8 R9 R10 R11 R12 R13 R15
			},
			outputs: []outputInfo{
				{0, 49135}, // AX CX DX BX BP SI DI R8 R9 R10 R11 R12 R13 R15
			},
		},
	},
	{
		name:         "BTSQ",
		argLen:       2,
		resultInArg0: true,
		clobberFlags: true,
		asm:          x86.ABTSQ,
		reg: regInfo{
			inputs: []inputInfo{
				{0, 49135}, // AX CX DX BX BP SI DI R8 R9 R10 R11 R12 R13 R15