y += x
	return (y-1)&y == 0
}

// isARM64addcon reports whether x can be encoded as the immediate value in an ADD or SUB instruction.
func isARM64addcon(v int64) bool {
	/* uimm12 or uimm24? */
	if v < 0 {
		return false
	}
	if (v & 0xFFF) == 0 {
		v >>= 12
	}
	return v <= 0xFFF
}

// setPos sets the position of v to pos, then returns true.

	Bool:          "bool",
	Int:           "int",
	Int8:          "int8",
	Int16:         "int16",
	Int32:         "int32",
	Int64:         "int64",
	Uint:          "uint",
	Uint8:         "uint8",
	Uint16:        "uint16",
	Uint32:        "uint32",
	Uint64:        "uint64",
	Uintptr:       "uintptr",
	Float32:       "float32",
	Float64:       "float64",
	Complex64:     "complex64",
	Complex128:    "complex128",

	// start with a uint16 length where the MSB is set and the first record
	// is always < 256 bytes long. Therefore typ == 0x80 strongly suggests
	// an SSLv2 client.
	if !handshakeComplete && typ == 0x80 {
		c.sendAlert(alertProtocolVersion)
		return c.in.setErrorLocked(c.newRecordHeaderError(nil, "unsupported SSLv2 handshake received"))
	}

	vers := uint16(hdr[1])<<8 | uint16(hdr[2])
	expectedVers := c.vers

	rs := r.Xsym

	emitReloc := func(v uint16, off uint64) {
		out.Write64(uint64(sectoff) + off)
		out.Write32(uint32(ldr.SymDynid(rs)))
		out.Write16(v)
	}

	var v uint16
	switch r.Type {
	default:
		return false
	case objabi.R_ADDR, objabi.R_DWARFSECREF:
		v = ld.XCOFF_R_POS
		if r.Size == 4 {

	}
	// Read header
	switch binary.LittleEndian.Uint16(data[0:2]) {
	case format:
	default:
		return fmt.Errorf("%s: unknown format: %d", ri.JobType, binary.LittleEndian.Uint16(data[0:2]))
	}
	switch binary.LittleEndian.Uint16(data[2:4]) {
	case version:
	default:
		return fmt.Errorf("%s: unknown version: %d", ri.JobType, binary.LittleEndian.Uint16(data[2:4]))
	}

	ri.mu.Lock()
	defer ri.mu.Unlock()

	// allocated.
	//
	// Only the first 10 bits are used.
	inUse uint16

	// lastInUse indicates how many pages in this chunk were allocated
	// when we transitioned from gen-1 to gen.
	//
	// Only the first 10 bits are used.
	lastInUse uint16

	// gen is the generation counter from a scavengeIndex from the
	// last time this scavChunkData was updated.

	// undefined and should never be referenced.
	//
	// Object n starts at address n*elemsize + (start << pageShift).
	freeindex uint16
	// TODO: Look up nelems from sizeclass and remove this field if it
	// helps performance.
	nelems uint16 // number of object in the span.
	// freeIndexForScan is like freeindex, except that freeindex is
	// used by the allocator whereas freeIndexForScan is used by the

func (t *caseTrie) lookupValue(n uint32, b byte) uint16 {
	switch {
	case n < 18:
		return uint16(caseValues[n<<6+uint32(b)])
	default:
		n -= 18
		return uint16(sparse.lookup(n, b))
	}
}

// caseValues: 20 blocks, 1280 entries, 2560 bytes
// The third block is the zero block.
var caseValues = [1280]uint16{
	// Block 0x0, offset 0x0
	0x27: 0x0054,
	0x2e: 0x0054,

func (t *caseTrie) lookupValue(n uint32, b byte) uint16 {
	switch {
	case n < 18:
		return uint16(caseValues[n<<6+uint32(b)])
	default:
		n -= 18
		return uint16(sparse.lookup(n, b))
	}
}

// caseValues: 20 blocks, 1280 entries, 2560 bytes
// The third block is the zero block.
var caseValues = [1280]uint16{
	// Block 0x0, offset 0x0
	0x27: 0x0054,
	0x2e: 0x0054,

			continue
		}
		proxier.ipsetList[kubeClusterIPSet].activeEntries.Insert(entry.String())
		// ipvs call
		serv := &utilipvs.VirtualServer{
			Address:   svcInfo.ClusterIP(),
			Port:      uint16(svcInfo.Port()),
			Protocol:  string(svcInfo.Protocol()),
			Scheduler: proxier.ipvsScheduler,
		}
		// Set session affinity flag and timeout for IPVS service