8332153: RISC-V: enable tests and add comment for vector shift instruct (shared by vectorization and Vector API)

[Hamlin-Li]

Hi,
Can you help to review this patch?
For vector shift instruct, some corresponding tests are not enabled, this is to enable them.
And the way how vector shift instruct works is not clear, especially both vectorization (SLP in jdk) and Vector API share the same instruct's in riscv_v.ad, so also added some comment to clarify it.

Thanks

---

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Issue

• JDK-8332153: RISC-V: enable tests and add comment for vector shift instruct (shared by vectorization and Vector API) (Enhancement - P4)

Reviewers

• Fei Yang (@RealFYang - Reviewer)

Reviewing

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[bridgekeeper]

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[openjdk]

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

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8332153: RISC-V: enable tests and add comment for vector shift instruct (shared by vectorization and Vector API)

Reviewed-by: fyang

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 85 new commits pushed to the master branch:

• 5f2b8d0: 8332448: Make SpaceMangler inherit AllStatic
• 8a49d47: 8332462: ubsan: c1_ValueStack.hpp:229:49: runtime error: load of value 171, which is not a valid value for type 'bool'
• ce99198: 8332181: Deprecate for removal the MulticastSocket.send(DatagramPacket, byte) and setTTL/getTTL methods on DatagramSocketImpl and MulticastSocket
• f5ab7df: 8332494: java/util/zip/EntryCount64k.java failing with java.lang.RuntimeException: '\A\Z' missing from stderr
• 9f77793: 8332495: java/util/logging/LoggingDeadlock2.java fails with AssertionError: Some tests failed
• fb45bab: 8075917: The regression-swing case failed as the text on label is not painted red with the GTK L&F
• 6e80512: 8332545: Fix handling of HTML5 entities in Markdown comments
• b78613b: 8332154: Memory leak in SynchronousQueue
• 7652f98: 8331885: C2: meet between unloaded and speculative types is not symmetric
• d6b7f9b: 8331851: Add specific regression leap year tests for Calendar.roll()
• ... and 75 more: https://git.openjdk.org/jdk/compare/d517d2df451e135583083ed3684d7d3241b36f76...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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

[openjdk]

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[mlbridge]

Webrevs

• 03: Full - Incremental (2ba613fa)
• 02: Full - Incremental (7216d886)
• 01: Full - Incremental (809f92e9)
• 00: Full (0078c854)

[RealFYang]

LGTM assuming these tests pass with RVV. Thanks.

[Hamlin-Li]

Yes, the tests passed.

Thanks @RealFYang @luhenry for your reviewing.

/integrate

[openjdk]

Going to push as commit 5cf8288.
Since your change was applied there have been 93 commits pushed to the master branch:

• ae9ad86: 8331934: [s390x] Add support for primitive array C1 clone intrinsic
• 3479b46: 8332595: Serial: Remove unused TenuredGeneration::should_collect
• 9bfae88: 8332297: annotation processor that generates records sometimes fails due to NPE in javac
• 4e169d1: 8332401: G1: TestFromCardCacheIndex.java with -XX:GCCardSizeInBytes=128 triggers underflow assertion
• 7ffc999: 8332498: [aarch64, x86] improving OpToAssembly output for partialSubtypeCheckConstSuper Instruct
• e529101: 8332473: ubsan: growableArray.hpp:290:10: runtime error: null pointer passed as argument 1, which is declared to never be null
• 414a7fd: 8311175: Move BufWriter::asByteBuffer to BufWriterImpl
• 451cc23: 8332486: ClassFile API ArrayIndexOutOfBoundsException with label metadata
• 5f2b8d0: 8332448: Make SpaceMangler inherit AllStatic
• 8a49d47: 8332462: ubsan: c1_ValueStack.hpp:229:49: runtime error: load of value 171, which is not a valid value for type 'bool'
• ... and 83 more: https://git.openjdk.org/jdk/compare/d517d2df451e135583083ed3684d7d3241b36f76...master

Your commit was automatically rebased without conflicts.

[openjdk]

@Hamlin-Li Pushed as commit 5cf8288.

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