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

[Jatin Bhateja]

On Tue, 11 Nov 2025 00:59:25 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> > Some quick comments.
> > We should be consistent in the naming, and rename `Halfloat*` to `Float16*`.
> 
> I concur, especially since there are multiple 16-bit floating-point formats in use including the IEEE 754 float16 as well as bfloat16.

There are nomenclature issues that I am facing. Currently, all the Float16 concrete classes use the Halffloat prefix i.e., Halffloat64Vector, Halffloat128Vector; converting these to Float16 looks a little confusing, i.e., Float1664Vector, Float16128Vector, etc Kindly suggest a better name to represent these classes.

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PR Comment: https://git.openjdk.org/jdk/pull/28002#issuecomment-3520534564