Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8217747

ZGC: Minor optimization of ZLoadBarrierStubC1

    XMLWordPrintable

Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 13
    • 13
    • hotspot
    • gc
    • b06

    Description

      In the C1 load barrier stub for ZGC we currently save/restore rax unless it's the stub result register. However, we can also avoid this save/restore of rax if it's the tmp register. Avoiding a push/pop in the stub isn't really an important optimization, but since we already do it for the result register we can just as well do it for the tmp register too, without making the code more complex.

      Attachments

        Activity

          People

            pliden Per Liden (Inactive)
            pliden Per Liden (Inactive)
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: