RFR: 8299327: Allow super late barrier expansion of store barriers in C2

[Erik Österlund]

On Fri, 23 Dec 2022 16:41:29 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> ZGC uses super late barrier expansion for load barriers in C2. Generational ZGC needs to do the same thing but for store barriers.
>
> Seems fine.

Thanks for the review, @vnkozlov!

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PR: https://git.openjdk.org/jdk/pull/11779