Allow larger OptoLoopAlignment and CodeEntryAlignment

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 19
    • Affects Version/s: 19
    • Component/s: hotspot
    • b10

      I am following up on the performance issue where the culprit seems to be the too low OptoLoopAlignment. To perform better experiments, I suggest allowing larger alignments.

      Note that we cannot make OptoLoopAlignment larger than CodeEntryAlignment, because nmethod copy would break it, see assert in `MacroAssembler::align`. See JDK-8273459 for latest discussion about it. So CodeEntryAlignment needs to be configurable as well.

      No default value is changed, this only unblocks experiments.

            Assignee:
            Aleksey Shipilev
            Reporter:
            Aleksey Shipilev
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              Created:
              Updated:
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