RFR: 8256072: Eliminate JVMTI tagmap rehashing [v2]

[Coleen Phillimore]

On Wed, 2 Nov 2022 20:44:58 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Use identity_hash for objects in the JVMTI TagMap table.  If the object has no hashcode, it's not in the table.
>> Tested with tier1-6.
>
> Coleen Phillimore has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:
> 
>  - Merge branch 'master' into jvmti
>  - 8256072: Eliminate JVMTI tagmap rehashing

Thanks for the code review Kim.  I removed the function that you noticed is now unused.

-------------

PR: https://git.openjdk.org/jdk/pull/10938