}

type eC struct {
	eZ // eZ contributes xf, xm to eC
}

var (
	_ = eA{}.xf
	_ = eA{}.xm
	_ = eA2{}.xf
	_ = eA2{}.xm
	_ = eB{}.xf
	_ = eB{}.xm
	_ = eB2{}.xf
	_ = eB2{}.xm
	_ = eC{}.xf
	_ = eC{}.xm
)

// ambiguous selectors due to embedding via type aliases
type eD struct {
	eY
	eZ
}

var (
	_ = eD{}.xf /* ERROR "ambiguous selector eD{}.xf" */

	VXOR XH, XL, XH
	BGE  loop_4x

tail_4x:
	VPMSUMD XH, H4L, XL // H^4.lo·Xi.lo
	VPMSUMD XH, H4, XM  // H^4.hi·Xi.lo+H^4.lo·Xi.hi
	VPMSUMD XH, H4H, XH // H^4.hi·Xi.hi

	VXOR XL, XL3, XL
	VXOR XM, XM3, XM

	VPMSUMD XL, XC2, T2 // 1st reduction phase

	VSLDOI $8, XM, ZERO, T0
	VSLDOI $8, ZERO, XM, T1
	VXOR   XH, XH3, XH
	VXOR   XL, T0, XL
	VXOR   XH, T1, XH

	VSLDOI $8, XL, XL, XL

	// x and y are finite, but z is infinite, should always result in z.
	if bz&uvinf == uvinf {
		return z
	}

	// Inputs are (sub)normal.
	// Split x, y, z into sign, exponent, mantissa.
	xs, xe, xm := split(bx)
	ys, ye, ym := split(by)
	zs, ze, zm := split(bz)

	// Compute product p = x*y as sign, exponent, two-word mantissa.
	// Start with exponent. "is normal" bit isn't subtracted yet.

		if xi != nil {
			// All xi methods must exist in y and corresponding signatures must unify.
			xmethods := xi.typeSet().methods
			for _, xm := range xmethods {
				obj, _, _ := LookupFieldOrMethod(y, false, xm.pkg, xm.name)
				if ym, _ := obj.(*Func); ym == nil || !u.nify(xm.typ, ym.typ, exact, p) {
					return false
				}
			}
			return true
		}
	}

		if xi != nil {
			// All xi methods must exist in y and corresponding signatures must unify.
			xmethods := xi.typeSet().methods
			for _, xm := range xmethods {
				obj, _, _ := LookupFieldOrMethod(y, false, xm.pkg, xm.name)
				if ym, _ := obj.(*Func); ym == nil || !u.nify(xm.typ, ym.typ, exact, p) {
					return false
				}
			}
			return true
		}
	}

func BenchmarkInterfaceSmall(b *testing.B) {
	v := ValueOf(int64(0))
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			v.Interface()
		}
	})
}

func BenchmarkNew(b *testing.B) {
	v := TypeOf(XM{})
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			New(v)
		}
	})
}

func BenchmarkMap(b *testing.B) {
	type V *int
	type S string
	value := ValueOf((V)(nil))

	// compare mantissas
	i := len(x.mant)
	j := len(y.mant)
	for i > 0 || j > 0 {
		var xm, ym Word
		if i > 0 {
			i--
			xm = x.mant[i]
		}
		if j > 0 {
			j--
			ym = y.mant[j]
		}
		switch {
		case xm < ym:
			return -1
		case xm > ym:
			return +1
		}
	}

	return 0
}

		{TypeOf(XM{}), "reflect_test.XM"},
		{TypeOf(new(XM)), "*reflect_test.XM"},
		{TypeOf(new(XM).String), "func() string"},
		{TypeOf(new(XM)).Method(0).Type, "func(*reflect_test.XM) string"},
		{ChanOf(3, TypeOf(XM{})), "chan reflect_test.XM"},
		{MapOf(TypeOf(int(0)), TypeOf(XM{})), "map[int]reflect_test.XM"},
		{ArrayOf(3, TypeOf(XM{})), "[3]reflect_test.XM"},

00000150  43 b7 7a c3 88 30 e5 ba  98 7f 8d 9e 08 a2 8c bb  |C.z..0..........|
00000160  48 44 c2 1a 8d 7b 41 de  b6 68 ae d2 8a 64 9b 6b  |HD...{A..h...d.k|
00000170  8a 47 88 04 49 05 8a 94  66 da d3 90 78 6d 81 64  |.G..I...f...xm.d|
00000180  4e 6b a5 6f d2 9d 1d 36  6f a2 a3 83 0c f5 69 10  |Nk.o...6o.....i.|
00000190  37 c8 b8 59 c7 b1 5b 91  fc e3 26 37 da 14 80 8f  |7..Y..[...&7....|

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