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  1. JDK
  2. JDK-8200233

Simple G1 evacuation path performance enhancements

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P5
    • Resolution: Fixed
    • Affects Version/s: 11
    • Fix Version/s: 11
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b10

      Description

      During recent source code browsing the following minor performance (code generation) enhancement could be found:

      - some stores can be made OOP_NOT_NULL
      - the path for compressed/uncompressed oops when popping elements from the task queue during evacuation can be specialized a bit: compressed oops are never array oops
      - some load of the "from" region in the evacuation path can be delayed and in many cases actually avoided

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            Assignee:
            tschatzl Thomas Schatzl
            Reporter:
            tschatzl Thomas Schatzl
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              Updated:
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