RFR: 8329750: Change Universe functions to return more specific Klass* types [v2]

[Dean Long]

On Wed, 10 Apr 2024 01:49:08 GMT, Dean Long <dlong at openjdk.org> wrote:

>> Oh good because I was going to need a lot more coffee to understand why there was a second call.  Thanks.
>
> Why devirtualize elsehwere but not here?  Maybe it's not a big deal.

Or to put it another way, what's the advantage of using `TypeArrayKlass* tak` in similar situations below?

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PR Review Comment: https://git.openjdk.org/jdk/pull/18652#discussion_r1558679785