[lworld] RFR: 8280270: [lworld] JITs miss some klass initialization checks for defaultvalue

[Tobias Hartmann]

On Fri, 21 Jan 2022 15:36:31 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> C1 and C2 miss some klass initialization checks for defaultvalue.
> 
> Long term, we should add support for patching defaultvalue in C1 (tracked by [JDK-8265067](https://bugs.openjdk.java.net/browse/JDK-8265067)).
> 
> Thanks,
> Tobias

Thanks for the review, Fred!

This patch also contains some fixes for unrelated issues that I found during stress testing.

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PR: https://git.openjdk.java.net/valhalla/pull/611