RFR: 8338526: Don't store abstract and interface Klasses in class metaspace [v4]

[Markus Grönlund]

On Thu, 29 Aug 2024 17:35:07 GMT, Markus Grönlund <mgronlun at openjdk.org> wrote:

>> In summary, we are agnostic about which space the Klass* is located in; we only care if a valid means exists to perform an encode() and decode() operation to compress the Klass* (for 64-bit to be clear). This may now become a function of what space the Klass resides in?
>
> Its very rare, if at all, that an abstract or an interface would be tagged in JFR. Tags are for concrete implementations, mostly InstanceKlass*.

I now read the JIRA issue. JFR do process loads of  java/lang/invoke/LambdaForm$MH and derivatives.

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PR Review Comment: https://git.openjdk.org/jdk/pull/19157#discussion_r1736809566