[lworld] RFR: 8247299: [lworld] Disable UseBiasedLocking by default

[Frederic Parain]

On Tue, 20 Oct 2020 15:52:40 GMT, David Simms <dsimms at openjdk.org> wrote:

> Disabled UseBiasedLocking, and reorganized markWord to serve Valhalla requirements (see also JDK-8247298 for
> motivation).
> Actual UseBiasedLocking code remains simply to avoid future conflicts. Since static constants have changed and
> UseBiasedLocking is deprecated, Valhalla assumes it will be removed, and it is not only disabled "by default", but now
> unusable.  Tier1-3 testing clean

Looks good to me.

Fred

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Marked as reviewed by fparain (Committer).

PR: https://git.openjdk.java.net/valhalla/pull/234