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  1. JDK
  2. JDK-8227677

Shenandoah: C2: Make in-native LRB special case of normal LRB

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    • Subcomponent:
      gc
    • Resolved In Build:
      b07
    • CPU:
      generic
    • OS:
      generic

      Description

      Currently, IN_NATIVE LRB generates a runtime call during parsing in C2. This may break optimizations. It is known to break the mirror->Klass*->mirror / Klass*->mirror->Klass* optimizations, and possibly some others too (e.g. wholesale elimination of the barrier on new/constant objects).

      It seems better to emit the normal LoadReferenceBarrier, with a special property 'native' instead, and only generate different runtime-call-addresses.

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              Assignee:
              rkennke Roman Kennke
              Reporter:
              rkennke Roman Kennke
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