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  1. JDK
  2. JDK-8221848

Shenandoah: ArrayCopy post-barrier improvements

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 8-shenandoah, 11-shenandoah, 13
    • Fix Version/s: 13
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b16
    • CPU:
      x86_64, aarch64
    • OS:
      generic

      Description

      Just like the arraycopy pre-barrier, the arraycopy post-barrier should check for count == 0 and HAS_FORWARDED gc-state in the generated stubs to avoid calling into the runtime at all in those cases. The runtime can then elide checking this.

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            Assignee:
            rkennke Roman Kennke
            Reporter:
            rkennke Roman Kennke
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              Created:
              Updated:
              Resolved: