use "dmb.ishst+dmb.ishld" for release barrier

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 23
    • Affects Version/s: 17, 21, 23
    • Component/s: hotspot
    • b08
    • aarch64
    • Fix failed

      See details at https://mail.openjdk.org/pipermail/hotspot-compiler-dev/2024-January/071921.html.
      Using a combined dmb.ish for release barrier will introduce a heavy storeload barrier.
      Use "dmb.ishst+dmb.ishld" pair instead, we can gain 13%~32% performance gain on N1 and N2 architecture.

      Kuai Wei will own this issue.

            Assignee:
            Andrew Haley
            Reporter:
            Joshua Zhu
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              Created:
              Updated:
              Resolved: