RFR: 8256633: Fix product build on Windows+Arm64 [v2]

Fri Nov 20 14:04:09 UTC 2020

On Fri, 20 Nov 2020 10:52:53 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Bernhard Urban-Forster has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   review feedback
>
> Looks fine. Not sure how sensible are negative shifts, but new code follows the current semantics exactly.

Thank you Aleksey and Magnus.

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PR: https://git.openjdk.java.net/jdk/pull/1312