Integrated: 8358340: Support CDS heap archive with Generational Shenandoah

[Aleksey Shipilev]

On Mon, 2 Jun 2025 18:22:36 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Now that [JDK-8364111](https://bugs.openjdk.org/browse/JDK-8364111) is integrated, Generational Shenandoah can support CDS heap loads. This also allows Generational Shenandoah to work well with Leyden/AOT. We allocate things in young regions, and there is nothing else in the heap, so no card table updates are necessary.
> 
> Additional testing:
>  - [x] Linux x86_64 server fastdebug, `hotspot_gc_shenandoah` 
>  - [x] Linux x86_64 server fastdebug, `runtime/cds` with `-XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational`
>  - [x] Linux x86_64 server fastdebug, `runtime/cds` with `-XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:+ShenandoahVerify`

This pull request has now been integrated.

Changeset: 577ac061
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/577ac0610a0c62d6a3f5501bb0d1bd45f8c47f22
Stats:     1 line in 1 file changed: 0 ins; 0 del; 1 mod

8358340: Support CDS heap archive with Generational Shenandoah

Reviewed-by: xpeng, wkemper

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PR: https://git.openjdk.org/jdk/pull/25597