8341767: [lworld] JIT support for nullable, atomic, flat arrays

[TobiHartmann]

C1 and C2 support for the new nullable, atomic, flat arrays (see JDK-8345995 for runtime). Follow-up work will be done with JDK-8350865 and is marked with // TODO 8350865 in the code. Most complexity is in C2 due to the additional runtime checks and the conversion between scalarized values and atomic accesses.

Thanks,
Tobias

---

Progress

• Change must not contain extraneous whitespace

Issue

• JDK-8341767: [lworld] JIT support for nullable, atomic, flat arrays (Enhancement - P4)

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[openjdk]

@TobiHartmann This change now passes all automated pre-integration checks.

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8341767: [lworld] JIT support for nullable, atomic, flat arrays

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At the time when this comment was updated there had been 1 new commit pushed to the lworld branch:

• 6488ace: 8351951: [lworld] javac should issue an error if a strict instance field has not been initialized before the super invocation

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[openjdk]

⚠️ @TobiHartmann This pull request contains merges that bring in commits not present in the target repository. Since this is not a "merge style" pull request, these changes will be squashed when this pull request in integrated. If this is your intention, then please ignore this message. If you want to preserve the commit structure, you must change the title of this pull request to Merge <project>:<branch> where <project> is the name of another project in the OpenJDK organization (for example Merge jdk:master).

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[TobiHartmann]

/integrate

[openjdk]

Going to push as commit a0b174f4cf8166c5eff9c718045b5d3987c5e65c.
Since your change was applied there has been 1 commit pushed to the lworld branch:

• 6488ace: 8351951: [lworld] javac should issue an error if a strict instance field has not been initialized before the super invocation

Your commit was automatically rebased without conflicts.

[openjdk]

@TobiHartmann Pushed as commit a0b174f.

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