RFR: 8324186: AARCH64: Use "dmb.ishst+dmb.ishld" for release barrier

[kuaiwei]

On Mon, 22 Jan 2024 10:14:28 GMT, Andrew Haley <aph at openjdk.org> wrote:

> > Could we instead make the last store to a final field in a constructor an STLR and remove the release barrier?
> 
> It's possible, but it would be more work.

I tried it before and failed. We can not bind the final field store with stlr, because the store which publish the new obj to heap can float above and cause trouble. It may work if bind the stlr with the publish store. But we may add multiple stlr.

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PR Comment: https://git.openjdk.org/jdk/pull/17511#issuecomment-1904188653