Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8194740

UseSubwordForMaxVector causes performance regression

    Details

    • Subcomponent:
    • Resolved In Build:
      b22

      Backports

        Description

        While investigating JDK-8194659, I've noticed that disabling UseSubwordForMaxVector (which is enabled by default) improves performance.

        The optimization reduces performance of the SPECjvm2008-MPEG benchmark by up to 3.5% and also affects performance of other benchmarks (see JDK-8194659 for details).

          Attachments

            Issue Links

              Activity

                People

                • Assignee:
                  vdeshpande Vivek Deshpande
                  Reporter:
                  thartmann Tobias Hartmann
                • Votes:
                  0 Vote for this issue
                  Watchers:
                  6 Start watching this issue

                  Dates

                  • Created:
                    Updated:
                    Resolved: