RFR: 8370691: Add new HalffloatVector type and enable intrinsification of float16 vector operations

[Paul Sandoz]

On Tue, 11 Nov 2025 12:08:42 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> We already have a lot of things in the codebase now from previous issues that use `HF` everywhere, for example some node names, and the type. Should we maybe rename all of them to `F16`, or something else? Open question, not sure of the answer yet.

I was only referring to the Java code, esp. the new public classes so they align with the `Float16` element type. I do think it worthwhile to align so we are consistent across the platform. Revisiting the names in HotSpot, and their internal connection in Java, could be done in a separate PR?

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PR Comment: https://git.openjdk.org/jdk/pull/28002#issuecomment-3517758143