RFR: JDK-8302989: Add missing INCLUDE_CDS checks [v2]

[Matthias Baesken]

On Wed, 1 Mar 2023 09:57:28 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Make SharedSpaces related vars const and false in non CDS mode
>
> src/hotspot/share/utilities/globalDefinitions.hpp line 594:
> 
>> 592: #else
>> 593: // in non CDS mode do not export it
>> 594: extern const bool UseSharedSpaces;
> 
> How about this?
> 
> 
> const bool RequireSharedSpaces = false;
> 
> 
> This will allow the C++ compiler to eliminate all code that depend on this value when `INCLUDE_CDS` is false.

Hi Ioi, I set this already some lines above (in the non-INCLUDE_CDS case).

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PR: https://git.openjdk.org/jdk/pull/12691