RFR: 8342011: Conditionally compile ReservedHeapSpace compressed heap support [v4]

[Stefan Karlsson]

On Fri, 18 Oct 2024 19:40:49 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Please review this change to ReservedHeapSpace to conditionally include the
>> support for compressed oops only in 64bit builds.  This code is unused and
>> inapplicable in 32bit builds.  Further, it contains code that is problematic
>> in a 32bit build.  See the JBS issue for details.
>> 
>> Testing: mach5 tier1, GHA testing
>
> Kim Barrett has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add separator line

Looks good. Thanks.

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Marked as reviewed by stefank (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21484#pullrequestreview-2381240259