8255129: [PPC64, s390] Check vector_size_supported and add VectorReinterpret node

[TheRealMDoerr]

match_rule_supported_vector on PPC64 and s390 need to check vector_size_supported.
In addition, an implementation for VectorReinterpret is needed. It can get implemented empty when using src = dst register. Note that these 2 platforms support only one vector size at a time, so there's no need for move between different sizes.

I'd like to clean up match_rule_supported, too. Cases for which we return true don't need to get checked explicitely because true is default. And we don't need to check SpecialString... flags because they are handled by "disabled_by_jvm_flags". So they can still get disabled (e.g. by jdk/bin/java -XX:-TieredCompilation -XX:-SpecialStringIndexOf -XX:+PrintCompilation -XX:+PrintInlining TestString|grep StringLatin1::indexOf).

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Progress

• Change must not contain extraneous whitespace
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Testing

	Linux x32	Linux x64	Windows x64	macOS x64
Build	✔️ (1/1 passed)	✔️ (5/5 passed)	✔️ (2/2 passed)	✔️ (2/2 passed)
Test (tier1)		✔️ (9/9 passed)	❌ (1/9 failed)	✔️ (9/9 passed)

Failed test task

• Windows x64 (hs/tier1 compiler)

Issue

• JDK-8255129: [PPC64, s390] Check vector_size_supported and add VectorReinterpret node

Reviewers

• Lutz Schmidt (@RealLucy - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk pull/783/head:pull/783
$ git checkout pull/783

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (e45f215)

[RealLucy]

Martin,
these changes look good to me. There remains a lot to be implemented, though. :-) And thank you for cleaning up the code!
Best, Lutz

[openjdk]

@TheRealMDoerr 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:

8255129: [PPC64, s390] Check vector_size_supported and add VectorReinterpret node

Reviewed-by: lucy

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 21 new commits pushed to the master branch:

• 211bb62: 8255124: KeepAliveStreamCleaner may crash with java.lang.IllegalMonitorStateException: current thread is not owner
• 299e115: 8198395: Test javax/swing/plaf/metal/MetalLookAndFeel/Test8039750.java fails in mach5
• a5b7bc5: 7156347: javax/swing/JList/6462008/bug6462008.java fails
• b25d894: 8252204: AArch64: Implement SHA3 accelerator/intrinsic
• 7d3d4da: 8240709: Enable javax/swing/UI/UnninstallUIMemoryLeaks/UnninstallUIMemoryLeaks.java on all L&F
• 5d26229: 8255174: Vector API unit tests for missed public api code coverage
• b9186be: 6606767: resexhausted00[34] fail assert(!thread->owns_locks(), "must release all locks when leaving VM")
• 1191a63: 8199697: FIPS 186-4 RSA Key Generation
• 60d3fa2: 8255022: Documentation missing for Vector API zero methods
• 9ade94b: 8206311: Add docs-javase, docs-reference to CI build
• ... and 11 more: https://git.openjdk.java.net/jdk/compare/e559bd2c8bf64888c8890605839d909228c97aaa...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.

[TheRealMDoerr]

/integrate

[openjdk]

@TheRealMDoerr Since your change was applied there have been 44 commits pushed to the master branch:

• df79257: 8255274: [PPC64, s390] wrong StringLatin1.indexOf version matched
• 55a0cad: 8254982: (tz) Upgrade time-zone data to tzdata2020c
• ac1748e: 8254670: SVE test uses linux-specific api
• 0e92053: 8254286: Wrong inference in switch expression with "null" arm
• 63ce304: 8249675: x86: frequency extraction from cpu brand string is incomplete
• e52156d: 8255067: Restore Copyright line in file modified by 8253191
• c520469: 8255131: G1CollectedHeap::is_in() returns wrong result
• 107fb9c: 8255049: Remove support for the hsdis decode_instructions entry point in hotspot
• c1524c5: 8255208: CodeStrings passed to Disassembler::decode are ignored
• 8e5dff0: 8255213: Shenandoah build fails without JFR after JDK-8255036
• ... and 34 more: https://git.openjdk.java.net/jdk/compare/e559bd2c8bf64888c8890605839d909228c97aaa...master

Your commit was automatically rebased without conflicts.

Pushed as commit 9007bc2.

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