[master] RFR: Load narrowKlass from header, AArch64 assembler implementation [v3]

[Roman Kennke]

On Thu, 27 Jan 2022 12:10:08 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Aph's suggestions
>
> I'll defer to Andrew to examine AArch64 code, but I have two quick comments.

@shipilev @theRealAph Thanks for reviewing! Please approve if you are ok with this updated PR.
Thanks, Roman

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PR: https://git.openjdk.java.net/lilliput/pull/36