[lworld] RFR: 8363846: [lworld] Make Class.isIdentityClass() non-native [v4]

[Roger Riggs]

On Wed, 23 Jul 2025 16:35:40 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I'd go ahead and create the isIdentity field and move this code to the constructor.
>> The modifiers, component type and primitive flag are all available at once.
>
> I'd rather not have anymore JVM/java.lang.Class handshake than we have now.  This uses existing fields.

The new field would be initialized by the code moved from IsIdentity() (not from the vm)
Skip it for now and it can be fixed up later.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1514#discussion_r2226245440