RFR: 8264016: [JVMCI] add some thread local fields for use by JVMCI

[Tom Rodriguez]

On Thu, 25 Mar 2021 00:35:30 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> 8264016: [JVMCI] add some thread local fields for use by JVMCI
>
> Marked as reviewed by coleenp (Reviewer).

Thanks for the reviews.  I'll defer any loom related issues to some future date.

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PR: https://git.openjdk.java.net/jdk/pull/3147