type connStats struct {
	internodeInputBytes  uint64
	internodeOutputBytes uint64
	s3InputBytes         uint64
	s3OutputBytes        uint64
}

// Increase internode total input bytes
func (s *connStats) incInternodeInputBytes(n int64) {
	atomic.AddUint64(&s.internodeInputBytes, uint64(n))
}

// Increase internode total output bytes
func (s *connStats) incInternodeOutputBytes(n int64) {

	// Figure out the maximum amount of data we need to retain
	// for backreferences.
	var windowSize uint64
	if !singleSegment {
		// Window descriptor. RFC 3.1.1.1.2.
		windowDescriptor := r.scratch[0]
		exponent := uint64(windowDescriptor >> 3)
		mantissa := uint64(windowDescriptor & 7)
		windowLog := exponent + 10
		windowBase := uint64(1) << windowLog
		windowAdd := (windowBase / 8) * mantissa
		windowSize = windowBase + windowAdd

}

func encUint64Slice(state *encoderState, v reflect.Value) bool {
	slice, ok := v.Interface().([]uint64)
	if !ok {
		// It is kind uint64 but not type uint64. TODO: We can handle this unsafely.
		return false
	}
	for _, x := range slice {
		if x != 0 || state.sendZero {
			state.encodeUint(x)
		}
	}
	return true
}

func encUintptrArray(state *encoderState, v reflect.Value) bool {

	w.WriteByte(0x41) // i32.const
	writeSleb128(w, int64(v))
}

func writeI64Const(w io.ByteWriter, v int64) {
	w.WriteByte(0x42) // i64.const
	writeSleb128(w, v)
}

func writeName(w nameWriter, name string) {
	writeUleb128(w, uint64(len(name)))
	w.Write([]byte(name))
}

func writeUleb128(w io.ByteWriter, v uint64) {
	if v < 128 {
		w.WriteByte(uint8(v))
		return
	}

				return nil, err
			}
			strtab, err := saferio.ReadDataAt(r, uint64(hdr.Strsize), int64(hdr.Stroff))
			if err != nil {
				return nil, err
			}
			var symsz int
			if f.Magic == Magic64 {
				symsz = 16
			} else {
				symsz = 12
			}
			symdat, err := saferio.ReadDataAt(r, uint64(hdr.Nsyms)*uint64(symsz), int64(hdr.Symoff))
			if err != nil {
				return nil, err
			}

		{name: "ADDE", argLength: 3, reg: gp2xer1xer, asm: "ADDE", typ: "(UInt64, UInt64)", commutative: true}, // arg0 + arg1 + CA (arg2) -> out, CA
		{name: "ADDZE", argLength: 2, reg: gp1xer1xer, asm: "ADDZE", typ: "(UInt64, UInt64)"},                  // arg0 + CA (arg1) -> out, CA

	locationsByID map[uint64]*Location
	functionsByID map[uint64]*Function
	mappingsByID  map[uint64]mapInfo

	// Memoization tables for profile entities.
	samples   map[sampleKey]*Sample
	locations map[locationKey]*Location
	functions map[functionKey]*Function
	mappings  map[mappingKey]*Mapping
}

type mapInfo struct {
	m      *Mapping
	offset int64
}

}

// addU returns x+y. Requires that x+y does not overflow an int64.
func addU(x int64, y uint64) int64 {
	if y >= 1<<63 {
		if x >= 0 {
			base.Fatalf("addU overflowed %d + %d", x, y)
		}
		x += 1<<63 - 1
		x += 1
		y -= 1 << 63
	}
	if addWillOverflow(x, int64(y)) {
		base.Fatalf("addU overflowed %d + %d", x, y)
	}
	return x + int64(y)
}

}

type MachoSect struct {
	name    string
	segname string
	addr    uint64
	size    uint64
	off     uint32
	align   uint32
	reloc   uint32
	nreloc  uint32
	flag    uint32
	res1    uint32
	res2    uint32
}

type MachoSeg struct {
	name       string
	vsize      uint64
	vaddr      uint64
	fileoffset uint64
	filesize   uint64
	prot1      uint32
	prot2      uint32
	nsect      uint32

		v0 := b.NewValue0(v.Pos, OpARM64MOVDconst, typ.UInt64)
		v0.AuxInt = int64ToAuxInt(c)
		v.AddArg2(x, v0)
		return true
	}
	return false
}
func rewriteValueARM64latelower_OpARM64TSTWconst(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (TSTWconst [c] x)
	// cond: !isARM64bitcon(uint64(c)|uint64(c)<<32)
	// result: (TSTW x (MOVDconst [int64(c)]))
	for {