master
8374377: PNGImageDecoder Slow For 8-bit PNGs
8373647: Avoid fstat when opening file for write with RandomAccessFile or FileOutputStream
8390113: JEP 401 integration breaks some pre-existing microbenchmarks
8356709: Avoid redundant String formatting in BigDecimal.valueOf(double)
8379557: Further optimize URL.toExternalForm
8381015: CharsetEncoder.canEncode(CharSequence) is slow for UTF-8, UTF-16, UTF-32
8314323: Implement JEP 527: TLS 1.3 Hybrid Key Exchange
8380794: AttributedString performance
8337279: Share StringBuilder to format instant
8371656: HashMap.putAll() optimizations