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  1. JDK
  2. JDK-8216060

[PPC64] Vector CRC implementation should be used by interpreter and be faster for short arrays

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    • b05
    • ppc

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      Description

        Power8 introduced vector instructions which can be used for fast CRC calculations (CRC32 and CRC32C). The JVM already uses them for large arrays when called from compiled code.
        Usage of the fast vector implementation is currently missing in the interpreter code. It is also not used for short arrays (unaligned 512 byte arrays or shorter arrays).

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            backported by

            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-8217507 [PPC64] Vector CRC implementation should be used by interpreter and be faster for short arrays

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8216376 [PPC64] Possibly unreliable stack frame resizing in template interpreter

            • P3 - Major loss of function.
            • Resolved
            relates to

            Enhancement - null JDK-8198894 [PPC64] More generic vector CRC implementation

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

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                mdoerr Martin Doerr
                mdoerr Martin Doerr
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                  Created:
                  Updated:
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