8343724: [PPC64] Disallow OptoScheduling

[TheRealMDoerr]

Clean backport of JDK-8343724.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8343724 needs maintainer approval

Issue

• JDK-8343724: [PPC64] Disallow OptoScheduling (Bug - P4)

Reviewing

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$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/3105/head:pull/3105
$ git checkout pull/3105

Update a local copy of the PR:
$ git checkout pull/3105
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/3105/head

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https://git.openjdk.org/jdk17u-dev/pull/3105.diff

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[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]

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