8277508: need to check has_predicated_vectors before calling scalable_predicate_reg_slots

[yadongw]

Hi, Team,
A separate set of predicate registers is not mandatory for an implementation of scalable vectors. It will cause a failure in some platform which supports scalable vectors without explicit predicated registers, like riscv. All code about RegVectMask should be covered by has_predicated_vectors here in Matcher::init_first_stack_mask().

Yadong

---

Progress

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Issue

• JDK-8277508: need to check has_predicated_vectors before calling scalable_predicate_reg_slots

Reviewers

• Ningsheng Jian (@nsjian - Committer)
• Tobias Hartmann (@TobiHartmann - Reviewer)
• Nick Gasson (@nick-arm - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back yadongwang! 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]

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[mlbridge]

Webrevs

• 01: Full - Incremental (5f54b7fc)
• 00: Full (b3171c26)

[nsjian]

Looks good to me.

[TobiHartmann]

Looks good to me.

[openjdk]

@yadongw 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:

8277508: need to check has_predicated_vectors before calling scalable_predicate_reg_slots

Reviewed-by: njian, thartmann, ngasson

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 60 new commits pushed to the master branch:

• 7e54d06: 8277165: jdeps --multi-release --print-module-deps fails if module-info.class in different versioned directories
• eb4d886: 8277504: Use String.stripTrailing instead of hand-crafted method in SwingUtilities2
• 9879920: 8277825: Remove unused ReferenceProcessorPhaseTimes::_sub_phases_total_time_ms
• f788834: 8277786: G1: Rename log2_card_region_per_heap_region used in G1CardSet
• 3034ae8: 8277631: ZGC: CriticalMetaspaceAllocation asserts
• f0136ec: 8275687: runtime/CommandLine/PrintTouchedMethods test shouldn't catch RuntimeException
• 21e302a: 8270435: UT: MonitorUsedDeflationThresholdTest failed: did not find too_many string in output
• a81e4fc: 8258117: jar tool sets the time stamp of module-info.class entries to the current time
• 26472bd: 8277811: ProblemList vmTestbase/nsk/jdi/TypeComponent/isSynthetic/issynthetic001/TestDescription.java
• b5841ba: 8277806: 4 tools/jar failures per platform after JDK-8272728
• ... and 50 more: https://git.openjdk.java.net/jdk/compare/0a9e76c4f9d966015c19e87e3eb59ceb7489459f...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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change. Possible candidates are the reviewers of this PR (@nsjian, @TobiHartmann, @nick-arm) but any other Committer may sponsor as well.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[yadongw]

Thanks. Could I have another (R)eviewer?

[yadongw]

/integrate

[openjdk]

@yadongw
Your change (at version 5f54b7f) is now ready to be sponsored by a Committer.

[nick-arm]

Looks ok to me.

[RealFYang]

/sponsor

[openjdk]

Going to push as commit 00a6238.
Since your change was applied there have been 61 commits pushed to the master branch:

• 3383c0d: 8277659: [TESTBUG] Microbenchmark ThreadOnSpinWaitProducerConsumer.java hangs
• 7e54d06: 8277165: jdeps --multi-release --print-module-deps fails if module-info.class in different versioned directories
• eb4d886: 8277504: Use String.stripTrailing instead of hand-crafted method in SwingUtilities2
• 9879920: 8277825: Remove unused ReferenceProcessorPhaseTimes::_sub_phases_total_time_ms
• f788834: 8277786: G1: Rename log2_card_region_per_heap_region used in G1CardSet
• 3034ae8: 8277631: ZGC: CriticalMetaspaceAllocation asserts
• f0136ec: 8275687: runtime/CommandLine/PrintTouchedMethods test shouldn't catch RuntimeException
• 21e302a: 8270435: UT: MonitorUsedDeflationThresholdTest failed: did not find too_many string in output
• a81e4fc: 8258117: jar tool sets the time stamp of module-info.class entries to the current time
• 26472bd: 8277811: ProblemList vmTestbase/nsk/jdi/TypeComponent/isSynthetic/issynthetic001/TestDescription.java
• ... and 51 more: https://git.openjdk.java.net/jdk/compare/0a9e76c4f9d966015c19e87e3eb59ceb7489459f...master

Your commit was automatically rebased without conflicts.

[openjdk]

@RealFYang @yadongw Pushed as commit 00a6238.

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