RFR: 8329418: Replace pointers to tables with offsets in relocation bitmap [v2]

[Chris Plummer]

On Tue, 7 May 2024 16:38:23 GMT, Matias Saavedra Silva <matsaave at openjdk.org> wrote:

>> The beginning of the RW region contains pointers to c++ vtables which are always located at a fixed offset from the shared base address at runtime. This offset can be calculated at dumptime and stored with the read-only tables at the top of the RO region. As a further improvement, all the pointers to RO tables are replaced with offsets as well.
>> 
>> These changes will reduce the number of pointers in the RW and RO regions and will allow for the relocation bitmap size optimizations to be more effective. Verified with tier 1-5 tests.
>
> Matias Saavedra Silva has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Chris comments and cleanup

SA changes look good. Thanks for taking care of this.

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Marked as reviewed by cjplummer (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19107#pullrequestreview-2044246122