Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8302113

Improve CRC32 intrinsic with crypto pmull on AArch64

XMLWordPrintable

    • Icon: Enhancement Enhancement
    • Resolution: Fixed
    • Icon: P4 P4
    • 21
    • 17, 21
    • hotspot
    • b11

      Instruction pmull and pmull2 support operating on 64-bit data in Cryptographic Extension. The execution throughput of this form raises from 1 on Neoverse N1 to 4 on Neoverse V1 while the latency remains 2. The CRC32 instructions did not changed: latency 2, throughput 1. As a result, computing CRC32 using pmull could perform better than using crc32 instruction.

            yftsai Yi-Fan Tsai
            yftsai Yi-Fan Tsai
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved: