C2: Avoid redundant memory barriers in Unsafe.copyMemory0 intrinsic

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 18
    • Affects Version/s: 17
    • Component/s: hotspot
    • b14

      Unsafe::copyMemory0 intrinsic unconditionally inserts barriers arounds the call. It is conservative and barriers can be avoided in some cases (similar to what is done for scalar unsafe accesses; e.g., copying between on-heap arrays and off-heap is one of such cases).

            Assignee:
            Vladimir Ivanov
            Reporter:
            Vladimir Ivanov
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              Updated:
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