RFR: 8261649: AArch64: Optimize LSE atomics in C++ code [v4]

[Andrew Dinn]

On Thu, 18 Feb 2021 16:52:29 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Andrew Haley has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Switch statement layout.
>
> Passer-by comments...

The memory_order_conservative/relaxed change is better. still good to go.

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PR: https://git.openjdk.java.net/jdk/pull/2611