[lworld] RFR: 8364447: [lworld] Save isIdentity in a field of Class

[Chen Liang]

On Fri, 14 Nov 2025 19:04:45 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This change saves an 'identity' field in the j.l.Class for easy checks and inlining.
> Tested with tier1-4.

What Remi suggested probably works - we do seem to inject IDENTITY to older classes in a `!support_inline_types()` check in `ClassFileParser::parse_stream` now, so something like `componentType == null && Modifier.isIdentity(classFileAccessFlags)` can work.

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PR Comment: https://git.openjdk.org/valhalla/pull/1738#issuecomment-3544399131