RFR: 8365218: [JVMCI] AArch64 CPU features are not computed correctly after 8364128 [v4]

[Yudi Zheng]

On Wed, 13 Aug 2025 07:04:12 GMT, Yudi Zheng <yzheng at openjdk.org> wrote:

>> https://github.com/openjdk/jdk/pull/26515 changes the `VM_Version::CPU_` constant values on AArch64 and Graal now sees unsupported CPU features. This may result in SIGILL due to Graal emitting unsupported instructions, such as `CPU_SHA3`-based eor3 instructions in AArch64 SHA3 stubs.
>
> Yudi Zheng has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
> 
>  - Merge master
>  - style
>  - style
>  - address comments
>  - [JVMCI] AArch64 CPU features are not computed correctly after 8364128

Thanks for the review!
Passed tier1-3, most of tier9, failures seem unrelated.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/26727#issuecomment-3187300572