8299373: Extend vector conversion APIs for Halffloat type.

[swati-sha]

Hi All,

The patch contains the below changes:

• Extended existing conversion APIs (convertShape, castShape, convert) for half float vectors.
• Define new conversion operators for casting to/from halffloat type.
• Extended existing JTREG conversion tests for half float types.

Please review and provide your feedback.

Thanks,
Swati

---

Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8299373: Extend vector conversion APIs for Halffloat type.

Reviewers

• Jatin Bhateja (@jatin-bhateja - Committer)

Reviewing

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[bridgekeeper]

👋 Welcome back swati-sha! A progress list of the required criteria for merging this PR into vectorIntrinsics+fp16 will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[swati-sha]

/contributor add @jatin-bhateja

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[mlbridge]

Webrevs

• 02: Full - Incremental (6c0579ae)
• 01: Full - Incremental (4dcfb8b2)
• 00: Full (20b29ebe)

[jatin-bhateja]

Any specific reason for not directly calling Float.float16ToFloat(short) here ?

[swati-sha]

Done.

[jatin-bhateja]

LGTM

[openjdk]

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

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

8299373: Extend vector conversion APIs for Halffloat type.

Reviewed-by: jbhateja

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[swati-sha]

/integrate

[jatin-bhateja]

/sponsor

[openjdk]

@swati-sha
Your change (at version 6c0579a) is now ready to be sponsored by a Committer.

[openjdk]

Going to push as commit 9113b20.

[openjdk]

@jatin-bhateja @swati-sha Pushed as commit 9113b20.

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