diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/flate/fast_encoder.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/flate/fast_encoder.go | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/vendor/github.com/klauspost/compress/flate/fast_encoder.go b/vendor/github.com/klauspost/compress/flate/fast_encoder.go index 347ac2c90..a746eb733 100644 --- a/vendor/github.com/klauspost/compress/flate/fast_encoder.go +++ b/vendor/github.com/klauspost/compress/flate/fast_encoder.go @@ -215,24 +215,15 @@ func (e *fastGen) Reset() { func matchLen(a, b []byte) int { b = b[:len(a)] var checked int - if len(a) >= 4 { - // Try 4 bytes first - if diff := binary.LittleEndian.Uint32(a) ^ binary.LittleEndian.Uint32(b); diff != 0 { - return bits.TrailingZeros32(diff) >> 3 - } - // Switch to 8 byte matching. - checked = 4 - a = a[4:] - b = b[4:] - for len(a) >= 8 { - b = b[:len(a)] - if diff := binary.LittleEndian.Uint64(a) ^ binary.LittleEndian.Uint64(b); diff != 0 { - return checked + (bits.TrailingZeros64(diff) >> 3) - } - checked += 8 - a = a[8:] - b = b[8:] + + for len(a) >= 8 { + b = b[:len(a)] + if diff := binary.LittleEndian.Uint64(a) ^ binary.LittleEndian.Uint64(b); diff != 0 { + return checked + (bits.TrailingZeros64(diff) >> 3) } + checked += 8 + a = a[8:] + b = b[8:] } b = b[:len(a)] for i := range a { |