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  1. JDK
  2. JDK-8302783

Improve CRC32C intrinsic with crypto pmull on AArch64

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    • Enhancement
    • Resolution: Fixed
    • P4
    • 21
    • 17, 20, 21
    • hotspot
    • b13

    Description

      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 CRC32C instructions did not changed: latency 2, throughput 1. As a result, computing CRC32C using pmull could perform better than using crc32c instruction.

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              yftsai Yi-Fan Tsai
              yftsai Yi-Fan Tsai
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                Updated:
                Resolved: