RFR: 8293337: Store method handle intrinsics in AOT cache [v4]

Ioi Lam iklam at openjdk.org
Wed Sep 18 03:02:19 UTC 2024


> This is the 5th PR for [JEP 483: Ahead-of-Time Class Loading & Linking](https://bugs.openjdk.org/browse/JDK-8315737).
> 
> This PR is necessary to support [JDK-8293336: AOT-linking of invokedynamic for lambda expression and string concat](https://bugs.openjdk.org/browse/JDK-8293336), which needs to store Java heap objects that have native pointers to the C++ `Method` objects  returned by `SystemDictionary::find_method_handle_intrinsic()` 
> 
> These `Method` objects are created within the JVM. They do not belong to any actual Java classes. We store all these `Method` objects into the AOT cache, so that they can be referenced by other artifacts in the AOT cache.
> 
> ---
> See [here](https://bugs.openjdk.org/browse/JDK-8315737) for the sequence of dependent RFEs for implementing JEP 483.

Ioi Lam has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 11 additional commits since the last revision:

 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - @vnkozlov comment - added NOT_CDS_RETURN
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - some clean up
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - Merge branch 'jep-483-step-04-8293187-support-sun-invoke-util-wrapper-in-cds-archive-heap' into jep-483-step-05-8293337-archive-method-handle-intrinsics
 - ... and 1 more: https://git.openjdk.org/jdk/compare/cf26d3a4...988f101c

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/20959/files
  - new: https://git.openjdk.org/jdk/pull/20959/files/16b51d55..988f101c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20959&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20959&range=02-03

  Stats: 10 lines in 1 file changed: 5 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/20959.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20959/head:pull/20959

PR: https://git.openjdk.org/jdk/pull/20959


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