RFR: 8332082: Shenandoah: Use consistent tests to determine when pre-write barrier is active [v3]

[Aleksey Shipilev]

On Mon, 20 May 2024 16:59:25 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> This is consistent with c1 and other platforms.
>
> William Kemper has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix typo

Agreed, this is acceptable. We could resolve it in future by expanding gc-state to several bytes.

-------------

Marked as reviewed by shade (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19180#pullrequestreview-2074711115