RFR: 8261027: AArch64: Support for LSE atomics C++ HotSpot code [v2]

[Andrew Haley]

On Mon, 8 Feb 2021 14:52:00 GMT, Andrew Dinn <adinn at openjdk.org> wrote:

>> Andrew Haley has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Review changes
>
> It would help to change the name of old_value to value. Otherwise this si ok as is.

> _Mailing list message from [Andrew Haley](mailto:aph at redhat.com) on [hotspot-dev](mailto:hotspot-dev at openjdk.java.net):_
> Well, I don't know. Do InterlockedAdd and its friends generate good code?
> You've got the machines there, so you can have a look, but I can't.

I'm sorry, that was unnecessarily sharp of me! It's entirely up to you, but you might find investigating this to be useful.

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PR: https://git.openjdk.java.net/jdk/pull/2434