RFR: 8325821: [REDO] use "dmb.ishst+dmb.ishld" for release barrier [v2]

[Andrew Haley]

On Wed, 22 May 2024 11:05:49 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> kuaiwei has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Make MacroAssembler::merge more clear
>
> Cursory review:

This looks ready to me. I think we need jcstress with C1 and C2, and we should be done. @shipilev , do you agree?

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PR Comment: https://git.openjdk.org/jdk/pull/19278#issuecomment-2137155885