RFR: 8339167: Remove AbstractPoolEntry.PrimitiveEntry to reduce boxing overheads [v2]

[Chen Liang]

On Wed, 28 Aug 2024 17:51:52 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> Removing PrimitiveEntry reduces boxing/unboxing and removes a class.
>
> Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Wrong hash for FloatEntryImpl

Marked as reviewed by liach (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20749#pullrequestreview-2266928775