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  1. JDK
  2. JDK-8325821

[REDO] use "dmb.ishst+dmb.ishld" for release barrier

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    • b02
    • aarch64

      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.

        1.
        		 [BACKOUT] use "dmb.ishst+dmb.ishld" for release barrier Sub-task Resolved Tobias Hartmann  

            kwei Kuai Wei
            thartmann Tobias Hartmann
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