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  1. JDK
  2. JDK-8235288

AVX 512 instructions inadvertently used on Xeon for small vector width operations

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    Details

    • Subcomponent:
    • Introduced In Version:
      9
    • Resolved In Build:
      b27
    • CPU:
      x86

      Backports

        Description

        For vector replicate and reduction operations vinsert and vextract instructions are used. When UseAVX level is set to 3, these instructions are unnecessarily encoded with 512 bit vector width.

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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-8235395 AVX 512 instructions inadvertently used on Xeon for small vector width operations

            • P3 - Major loss of function.
            • Resolved

            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-8237892 AVX 512 instructions inadvertently used on Xeon for small vector width operations

            • P3 - Major loss of function.
            • Resolved

            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-8246413 AVX 512 instructions inadvertently used on Xeon for small vector width operations

            • P3 - Major loss of function.
            • Resolved

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                Assignee:
                sviswanathan Sandhya Viswanathan
                Reporter:
                sviswanathan Sandhya Viswanathan
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                  Created:
                  Updated:
                  Resolved: