Integrated: 8264718: Shenandoah: enable string deduplication during root scanning

[Zhengyu Gu]

On Mon, 5 Apr 2021 21:42:32 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> Shenandoah used to scan roots at pauses, so it deliberately disables string deduplication during root scanning to avoid extra pause times.
> 
> Now, Shenandoah scans roots in concurrent phase, it is no longer a concern, we should enable it.
> 
> Test:
> - [x] hotspot_gc_shenandoah

This pull request has now been integrated.

Changeset: 3aec2d96
Author:    Zhengyu Gu <zgu at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/3aec2d96
Stats:     69 lines in 5 files changed: 39 ins; 26 del; 4 mod

8264718: Shenandoah: enable string deduplication during root scanning

Reviewed-by: shade

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PR: https://git.openjdk.java.net/jdk/pull/3348