RFR: 8338727: RISC-V: Avoid synthetic data dependency in nmethod barrier on Ztso

[Hamlin Li]

On Wed, 21 Aug 2024 10:01:21 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

> Hi please consider,
> 
> On TSO we don't need the synthetic data dependency in between the loads.
> Also added some comment about this.
> 
> Sanity tested

Make sense to me. Thanks!

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Marked as reviewed by mli (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/20661#pullrequestreview-2253955587