8275643: C2's unaryOp vector intrinsic does not properly handle LongVector.neg

[GoeLin]

I backport this for parity with 17.0.3-oracle.
Requires follow-up test fix.

---

Progress

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Issue

• JDK-8275643: C2's unaryOp vector intrinsic does not properly handle LongVector.neg

Reviewing

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$ git fetch https://git.openjdk.java.net/jdk17u-dev pull/139/head:pull/139
$ git checkout pull/139

Update a local copy of the PR:
$ git checkout pull/139
$ git pull https://git.openjdk.java.net/jdk17u-dev pull/139/head

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https://git.openjdk.java.net/jdk17u-dev/pull/139.diff

[bridgekeeper]

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

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

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8275643: C2's unaryOp vector intrinsic does not properly handle LongVector.neg

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[mlbridge]

Webrevs

• 00: Full (16ab2726)

[GoeLin]

/integrate

[openjdk]

Going to push as commit f723588.
Since your change was applied there have been 9 commits pushed to the master branch:

• 27cbe24: 8271056: C2: "assert(no_dead_loop) failed: dead loop detected" due to cmoving identity
• ff3eec1: 8275847: Scheduling fails with "too many D-U pinch points" on small method
• 5d54bf5: 8274944: AppCDS dump causes SEGV in VM thread while adjusting lambda proxy class info
• e459c8c: 8275874: [JVMCI] only support aligned reads in c2v_readFieldValue
• 0b51fe2: 8271506: Add ResourceHashtable support for deleting selected entries
• 6cacf9a: 8278381: [GCC 11] Address::make_raw() does not initialize rspec
• c03b95d: 8279124: VM does not handle SIGQUIT during initialization
• 45002c0: 8277497: Last column cell in the JTable row is read as empty cell
• 592adc8: 8278604: SwingSet2 table demo does not have accessible description set for images

Your commit was automatically rebased without conflicts.

[openjdk]

@GoeLin Pushed as commit f723588.

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