useInt(a[i+51]) // ERROR "Found IsInBounds$"
	}
}

func decode1(data []byte) (x uint64) {
	for len(data) >= 32 {
		x += binary.BigEndian.Uint64(data[:8])
		x += binary.BigEndian.Uint64(data[8:16])
		x += binary.BigEndian.Uint64(data[16:24])
		x += binary.BigEndian.Uint64(data[24:32])
		data = data[32:]
	}
	return x
}

func decode2(data []byte) (x uint64) {

			// advance the position so that the decoded instruction
			// size includes the byte we just compared against.
			if decodeOp(decoder[pc]) == xJump {
				pc = int(decoder[pc+1])
			}
			if decodeOp(decoder[pc]) == xFail {
				pos++
			}

		case xCondIs64:
			if mode == 64 {
				pc = int(decoder[pc+1])
			} else {
				pc = int(decoder[pc])
			}

		case xCondIsMem:

		// For parity with JSON, strings can be decoded into time.Time if they are RFC 3339
		// timestamps.
		ByteStringToTime: cbor.ByteStringToTimeAllowed,
	}.DecMode()
	if err != nil {
		panic(err)
	}
	return decode
}()

// DecodeLax is derived from Decode, but does not complain about unknown fields in the input.
var DecodeLax cbor.DecMode = func() cbor.DecMode {
	opts := Decode.DecOptions()

	return 0, nil, nil
}

// decoder is a convenience interface for Decode.
type decoder interface {
	Decode(into interface{}) error
}

// YAMLOrJSONDecoder attempts to decode a stream of JSON documents or
// YAML documents by sniffing for a leading { character.
type YAMLOrJSONDecoder struct {
	r          io.Reader
	bufferSize int

	decoder decoder
}

type JSONSyntaxError struct {

// Int64 decodes and returns a uint64 value from the element bitstream.
func (r *Decoder) Uint64() uint64 {
	r.Sync(SyncUint64)
	return r.rawUvarint()
}

// Len decodes and returns a non-negative int value from the element bitstream.
func (r *Decoder) Len() int { x := r.Uint64(); v := int(x); assert(uint64(v) == x); return v }

// Int decodes and returns an int value from the element bitstream.

// without requiring a full Decoder.
func (dec *Decoder) newDecoderState(buf *decBuffer) *decoderState {
	d := dec.freeList
	if d == nil {
		d = new(decoderState)
		d.dec = dec
	} else {
		dec.freeList = d.next
	}
	d.b = buf
	return d
}

func (dec *Decoder) freeDecoderState(d *decoderState) {
	d.next = dec.freeList
	dec.freeList = d
}

const tooBig = (1 << 30) << (^uint(0) >> 62)

// A Decoder manages the receipt of type and data information read from the
// remote side of a connection.  It is safe for concurrent use by multiple
// goroutines.
//
// The Decoder does only basic sanity checking on decoded input sizes,
// and its limits are not configurable. Take caution when decoding gob data
// from untrusted sources.
type Decoder struct {

	errShort   = fmt.Errorf("truncated instruction")
	errUnknown = fmt.Errorf("unknown instruction")
)

var decoderCover []bool

// Decode decodes the leading bytes in src as a single instruction.
func Decode(src []byte, mode Mode) (inst Inst, err error) {
	if mode != ModeARM {
		return Inst{}, errMode
	}
	if len(src) < 4 {
		return Inst{}, errShort
	}

	if decoderCover == nil {

	return d.off - 1
}

// phasePanicMsg is used as a panic message when we end up with something that
// shouldn't happen. It can indicate a bug in the JSON decoder, or that
// something is editing the data slice while the decoder executes.
const phasePanicMsg = "JSON decoder out of sync - data changing underfoot?"

func (d *decodeState) init(data []byte) *decodeState {
	d.data = data
	d.off = 0
	d.savedError = nil

var (
	// Errors
	errShort   = fmt.Errorf("truncated instruction")
	errUnknown = fmt.Errorf("unknown instruction")
)

var decoderCover []bool

// Decode decodes the leading bytes in src as a single instruction using
// byte order ord.
func Decode(src []byte, ord binary.ByteOrder) (inst Inst, err error) {
	if len(src) < 4 {
		return inst, errShort
	}
	if decoderCover == nil {