Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8257772

Vectorizing clear memory operation using AVX-512 masked operations

    XMLWordPrintable

Details

    • Enhancement
    • Status: Resolved
    • P3
    • Resolution: Fixed
    • 16
    • 17
    • hotspot
    • b03
    • x86_64
    • generic

    Description

      Accelerate clear memory operation for system initialization of newly allocated objects.
      Currently for constant number of heap words less than InitArrayShortSize C2 compiler emits initialization sequence using 8 byte stores.
      This can accelerated using vector store operations.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8260716 Assert in MacroAssembler::clear_mem with -XX:-IdealizeClearArrayNode

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8260940 Regression ~3% in SPECjvm2008-Crypto.rsa-G1 in 17-b3

          • P3 - Major loss of function.
          • Closed
          links to

          Commit Commit openjdk/jdk/c11525a4

          Review Review openjdk/jdk/1631

          Activity

            People

              jbhateja Jatin Bhateja
              jbhateja Jatin Bhateja
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: