RFR: 8352437: Support --add-exports with -XX:+AOTClassLinking [v2]

Ioi Lam iklam at openjdk.org
Thu Mar 27 20:39:15 UTC 2025


> `-XX:+AOTClassLinking` requires the CDS archived full module graph (FMG).
> 
> - Before this PR, when  `--add-export` is specified,  FMG is disabled, so AOT caches created with `-XX:+AOTClassLinking` cannot be loaded.
> - After this PR, if the exact same `--add-export` flags as specified across the training/assembly/production phases, the FMG can be used, so we can use so AOT caches created with `-XX:+AOTClassLinking`.
> 
> The change itself is straight-forward: just remember the `--add-export` flags specified during AOT cache creation, and check the exact same ones are used during the production run.
> 
> I did a fair amount of refactoring to change the "exact options specified" checks in modules.cpp, so more such options can be easily added in the future (we need to handle `--add-reads` and `--add-opens` in future RFEs).
> 
> (Note: this PR depends on #24122 )

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.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24124/files
  - new: https://git.openjdk.org/jdk/pull/24124/files/164cd7f5..164cd7f5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24124&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24124&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24124.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24124/head:pull/24124

PR: https://git.openjdk.org/jdk/pull/24124


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