[jdk21u-dev] Integrated: 8310913: Move ReferencedKeyMap to jdk.internal so it may be shared

[Aleksey Shipilev]

On Fri, 8 Mar 2024 09:26:11 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Unclean backport to match the codebases between mainline and JDK 21, simplifying maintenance. It also implicitly fixes [JDK-8323505](https://bugs.openjdk.org/browse/JDK-8323505), since this move includes a few touchups to the test.
> 
> The uncleanliness comes from `MethodType.java` conflicts that does not have [JDK-8310849](https://bugs.openjdk.org/browse/JDK-8310849) in JDK 21. So it yields a few contextual conflicts. Since affected hunks are just removals, I removed them by hand.
> 
> There is a follow-up, [JDK-8325255](https://bugs.openjdk.org/browse/JDK-8325255), but it does not seem to affect anything yet, since there are no `ReferenceKeySet.add` calls anywhere in sight. We can backport that separately.
> 
> Additional testing:
>  - [x] MacOS AArch64 Server fastdebug, `jdk/internal/util` tests pass
>  - [x] MacOS AArch64 Server fastdebug, `java/lang/invoke` tests pass
>  - [x] Linux AArch64 Server fastdebug, `all` tests pass

This pull request has now been integrated.

Changeset: ec6b3260
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk21u-dev/commit/ec6b32601095017a2641f4b82143e83bef5f37b6
Stats:     1522 lines in 13 files changed: 887 ins; 627 del; 8 mod

8310913: Move ReferencedKeyMap to jdk.internal so it may be shared

Reviewed-by: rrich
Backport-of: 6af0af593446bc33dc94bbf7334c325c4ac0ac0f

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PR: https://git.openjdk.org/jdk21u-dev/pull/342