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  1. JDK
  2. JDK-8255625

AArch64: Implement Base64.encodeBlock accelerator/intrinsic

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    • Subcomponent:
    • Resolved In Build:
      b24
    • CPU:
      aarch64
    • OS:
      linux

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        Description

        Base64.encodeBlock are not intrinsified on aarch64, which has been done on x86_64.

        We can implement it with LD3/TBL instruction, a basic idea: http://0x80.pl/articles/base64-simd-neon.html#encoding-quadwords.
        The performance improvements shown there are promising.

        The usage of TBL instruction: https://developer.arm.com/documentation/dui0801/g/A64-SIMD-Vector-Instructions/TBL--vector-?lang=en.

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                Assignee:
                dongbo Dong Bo
                Reporter:
                dongbo Dong Bo
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