RFR: 8358749: Fix input checks in Vector API intrinsics

[Sandhya Viswanathan]

On Fri, 6 Jun 2025 14:09:11 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> We have been carrying this patch in Leyden/premain for a while: https://github.com/openjdk/leyden/commit/7faed7fc5c8e1bbd9a16ab22673a77099396179c. I believe it deserves to be in mainline. I polished it a little further.
> 
> It is _mostly_ a cleanup, but there are also new checks, on the paths where we do take constants off the arguments. In those cases, I believe the alternative is compiler SEGV-ing.
> 
> Additional testing:
>  - [x] Linux x86_64 server fastdebug, `hotspot_vector_1 hotspot_vector_2`
>  - [x] Linux x86_64 server fastdebug, `jdk_vector`

Looks good to me as well.

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Marked as reviewed by sviswanathan (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25673#pullrequestreview-2906334077