RFR: 8377507: Store cpu features in AOTCodeCache [v5]

[Ashutosh Mehra]

On Tue, 17 Feb 2026 08:37:21 GMT, Andrew Dinn <adinn at openjdk.org> wrote:

>> Ashutosh Mehra has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix bug in aarch64 implementation
>>   
>>   Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>
>
> Looks ok modulo the question about printing extra cpu features.

@adinn can you please review it again.

> src/hotspot/share/code/aotCodeCache.cpp line 458:
> 
>> 456:       VM_Version::store_cpu_features(runtime_cpu_features);
>> 457:       VM_Version::get_missing_features_name(runtime_cpu_features, cached_cpu_features_buffer, ss);
>> 458:       log.print_cr("Additional runtime CPU features: %s", ss.as_string());
> 
> Should we omit this when there are no extra features? i.e. the cached and runtime feature set is identical?

Good point. I updated it to print the message when not empty.

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PR Comment: https://git.openjdk.org/jdk/pull/29655#issuecomment-3915149896
PR Review Comment: https://git.openjdk.org/jdk/pull/29655#discussion_r2817434393