8245646: [lworld] LW3 Reduce impact of IdentityObject on metaspace

[fparain]

Please review these changes for JDK-8245646.

This is not a new feature, just an optimization to reduce the number klass arrays containing only IdentityObject begin allocated in metaspaces.

Thank you,

Fred

---

Progress

• Change must not contain extraneous whitespace

Issue

• JDK-8245646: [lworld] LW3 Reduce impact of IdentityObject on metaspace

Reviewers

• David Simms (dsimms - Committer)

Download

$ git fetch https://git.openjdk.java.net/valhalla pull/57/head:pull/57
$ git checkout pull/57

[bridgekeeper]

👋 Welcome back fparain! A progress list of the required criteria for merging this PR into lworld will be added to the body of your pull request.

[openjdk]

@fparain This change now passes all automated pre-integration checks, type /integrate in a new comment to proceed. After integration, the commit message will be:

8245646: [lworld] LW3 Reduce impact of IdentityObject on metaspace

Reviewed-by: dsimms

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Since the source branch of this PR was last updated there have been 4 commits pushed to the lworld branch:

• ed7a00c: 8245646: [lworld] LW3 Reduce impact of IdentityObject on metaspace
• 27e8b6e: 8245953: [lworld] Remove array storage property bits clearing from JIT code
• 8422fb4: 8245809: [lworld] Remove the last traces of arrayStorageProperties
• 9a83d9b: 8245584: [lworld] LW3 core reflection update

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid automatic rebasing, please merge lworld into your branch, and then specify the current head hash when integrating, like this: /integrate ed7a00c6f70a264a1cd3445f5496b53543f4a8bf.

➡️ To integrate this PR with the above commit message to the lworld branch, type /integrate in a new comment.

[mlbridge]

Webrevs

• 00: Full (7691642)

[MrSimms]

Looks good.

[fparain]

/integrate

[openjdk]

@fparain The following commits have been pushed to lworld since your change was applied:

• 27e8b6e: 8245953: [lworld] Remove array storage property bits clearing from JIT code
• 8422fb4: 8245809: [lworld] Remove the last traces of arrayStorageProperties
• 9a83d9b: 8245584: [lworld] LW3 core reflection update

Your commit was automatically rebased without conflicts.

Pushed as commit ed7a00c.