RFR: 8255246: AArch64: Implement BigInteger shiftRight and shiftLeft accelerator/intrinsic [v2]

[Dong Bo]

On Tue, 27 Oct 2020 16:45:42 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Dong Bo has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   minor improvements for small BigIntegers
>
> Marked as reviewed by aph (Reviewer).

@theRealAph Thanks for the review.

@RealFYang Could you please sponsor this? Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/861