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  1. JDK
  2. JDK-8296548

Improve MD5 intrinsic for x86_64

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    • b24
    • x86

    Backports

      Description

        LEA instruction used in MD5 intrinsic is less performant on older x86 microarchitectures such as Haswell, Broadwell, Skylake, and Cascade Lake. Microbenchmark evaluation showed ~40% performance improvement by replacing LEA with ADDs.

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8299413 Improve MD5 intrinsic for x86_64

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            links to

            Commit Commit openjdk/jdk17u-dev/838ca6ad

            Commit Commit openjdk/jdk/6ead2b01

            Review Review openjdk/jdk17u-dev/954

            Review Review openjdk/jdk/11054

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