8321204: C2: assert(false) failed: node should be in igvn hash table

[TheRealMDoerr]

Clean backport of JDK-8321204.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8321204 needs maintainer approval

Issue

• JDK-8321204: C2: assert(false) failed: node should be in igvn hash table (Bug - P4 - Requested)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk22u.git pull/245/head:pull/245
$ git checkout pull/245

Update a local copy of the PR:
$ git checkout pull/245
$ git pull https://git.openjdk.org/jdk22u.git pull/245/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 245

View PR using the GUI difftool:
$ git pr show -t 245

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk22u/pull/245.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

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[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @TheRealMDoerr This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (d6e018bb)

[TheRealMDoerr]

/approval request The assertion has been hit several times in JDK 22. This backport fixes the assertion. It is very small, applies cleanly and tier 1-4 has passed. It only has an effect on debug builds.

[openjdk]

@TheRealMDoerr
8321204: The approval request has been created successfully.

[bridgekeeper]

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