RFR: 8353597: Refactor handling VM options for AOT cache input and output [v3]

[Ioi Lam]

On Tue, 8 Apr 2025 15:57:46 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> src/hotspot/share/cds/cdsConfig.cpp line 598:
>> 
>>> 596:     // - SharedArchiveFile is not specified and the VM doesn't have a compatible default archive
>>> 597: 
>>> 598: #define __THEMSG " is unsupported when base CDS archive is not loaded. Run with -Xlog:cds for more info."
>> 
>> Do we want to start transitioning existing `-Xlog:cds` options to be `:aot` options?  I think making the switch would match out long term direction
>
> Yes, but I think we should do it only if `AOTClassLinking` is enabled. For legacy CDS we should continue use `-Xlog:cds`.
> I am using `-Xlog:aot+codecache`  in AOT code caching.

I created [JDK-8354055 - Change "cds" logging tag to "aot"](https://bugs.openjdk.org/browse/JDK-8354055). There are documentation/compatibility issues so we need to do some planning.

This particular block of code is moved from dynamicArchive.cpp to cdsConfig.cpp and I kept the logging tag the same.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24401#discussion_r2033582112