RFR: 8336267: Method and Constructor signature parsing can be shared on the root object [v5]

[Mandy Chung]

On Wed, 30 Oct 2024 16:42:18 GMT, Chen Liang <liach at openjdk.org> wrote:

>> A straightforward optimization, to share the signature parsing of method, constructor, and field between the root and the copied objects, like how method handle accessors are shared.
>
> Chen Liang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Move hash cache out of shared states section
>   
>   Co-authored-by: Mandy Chung <mandy.chung at oracle.com>

Marked as reviewed by mchung (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20179#pullrequestreview-2412041512