8375443: AVX-512: Disabling through UseSHA doesn't affect UseSHA3Intrinsics

[rm-gh-8]

Backporting JDK-8375443: AVX-512: Disabling through UseSHA doesn't affect UseSHA3Intrinsics.

This PR fixes a bug where UseSHA3Intrinsics could be auto enabled on capable AVX-512 CPUs even when the master UseSHA flag is disabled.

For parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/hotspot/jtreg/compiler/arguments/TestUseSHA3IntrinsicsWithUseSHADisabledOnSupportedCPU.java
make test TEST=test/hotspot/jtreg/compiler/arguments/TestUseSHA3IntrinsicsWithUseSHADisabledOnUnsupportedCPU.java

Results:

windows-x64-specific-test.log
windows-x64-specific-2-test.log
macos-aarch64-specific-test.log
macos-aarch64-specific-2-test.log
linux-x64-specific-test.log
linux-x64-specific-2-test.log
linux-aarch64-specific-test.log
linux-aarch64-specific-2-test.log

---

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---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8375443 needs maintainer approval

Issue

• JDK-8375443: AVX-512: Disabling through UseSHA doesn't affect UseSHA3Intrinsics (Bug - P5 - Requested)

Reviewing

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Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk25u-dev.git pull/745/head

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[bridgekeeper]

👋 Welcome back rmesde! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[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]

⚠️ @rm-gh-8 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 (76b85195)

[rm-gh-8]

/approval request for backport of JDK-8375443: AVX-512: Disabling through UseSHA doesn't affect UseSHA3Intrinsics.

This PR fixes a bug where UseSHA3Intrinsics could be auto enabled on capable AVX-512 CPUs even when the master UseSHA flag is disabled.

For parity with Oracle JDK.

Low risk — a flag consistency fix in x86 CPU.

[openjdk]

@rm-gh-8
8375443: The approval request has been created successfully.