RFR: Store cpu features in AOTCodeCache header

[Andrew Dinn]

On Mon, 7 Jul 2025 18:18:35 GMT, Jan Kratochvil <jkratochvil at openjdk.org> wrote:

> It can be a future extension but Leyden may also find useful an equivalent of -XX:CPUFeatures=generic so that you can store the data on any machine and restore it also on any machine - limiting the CPU feature set in all runs to some reasonable minimum.
We have discussed such an option in dev team meetings. We are still considering what would be the most useful and/or usable model.

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PR Comment: https://git.openjdk.org/leyden/pull/84#issuecomment-3048396615