RFR: 8356595: Convert -Xlog:cds to -Xlog:aot [v4]

[David Holmes]

On Wed, 14 May 2025 01:07:36 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> This is an alternative (and opposite) approach to https://github.com/openjdk/jdk/pull/24895. We basically convert most `[cds]` logs to `[aot]` logs. However, for the few logs that might be needed by existing user scripts, we use macros like `aot_log_info`, `aot_log_debug` so that they can be selected/printed using the `[cds]` tag. 
>> 
>> We have a few hundred logs that start with `[cds]`. To aid reviewing, this PR will convert only part of them. I will create a second PR that coverts the rest of the logs.
>> 
>> Please see **aotLogging.hpp** for how the macros work.
>
> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Removed PrintAOTLogsAsCDSLogs and improved comments

src/hotspot/share/cds/aotLogging.hpp line 87:

> 85: // ===================
> 86: //
> 87: // This is model after the deprecate/obsolete/removal process of VM options in arguments.cpp

Suggestion:

// This is modeled after the deprecate/obsolete/expire process of VM options in arguments.cpp

src/hotspot/share/cds/aotLogging.hpp line 92:

> 90: //          the CDS Compatibility Logs must be selected with -Xlog:cds
> 91: //
> 92: // JDK 26 - Same as above, except that when -Xlog:cds is specified in the command-line, an warning

Suggestion:

// JDK 26 - Same as above, except that when -Xlog:cds is specified in the command-line, a warning

src/hotspot/share/cds/aotLogging.hpp line 98:

> 96: //          the CDS Compatibility Logs must be selected with -Xlog:aot.
> 97: //
> 98: //          When -Xlog:cds is specified in the command-line, an warning message is printed to

Suggestion:

//          When -Xlog:cds is specified in the command-line, a warning message is printed to

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PR Review Comment: https://git.openjdk.org/jdk/pull/25136#discussion_r2087966346
PR Review Comment: https://git.openjdk.org/jdk/pull/25136#discussion_r2087966639
PR Review Comment: https://git.openjdk.org/jdk/pull/25136#discussion_r2087966847