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  1. JDK
  2. JDK-8242130

Shenandoah: Simplify arraycopy-barrier dispatching

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    • gc
    • b18
    • generic
    • generic

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      Description

        Currently, calling the arraycopy dispatches 3 times in a row:

        1. In the asm stub (GC or no GC)
        2. In arraycopy_pre (marking or evac/update)
        3. In arraycopy_update (evac or update)

        This can be simplified by doing only the fast-path branch in asm stub, and the GC-phase dispatch once in the runtime.

        In addition, there are various cleanups that can be done on the way.

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                rkennke Roman Kennke
                rkennke Roman Kennke
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                  Updated:
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