RFR: 8259822: [PPC64] Support the prefixed instruction format added in POWER10 [v4]

Fri Feb 5 21:21:43 UTC 2021

On Wed, 3 Feb 2021 17:35:33 GMT, Corey Ashford <cashford at openjdk.org> wrote:

>> Kazunori Ogata has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Removed pla and psubi and adjusted spacing based on review comments
>
> Looks good!  Thanks for the additional formatting cleanup

@CoreyAshford Thank you for your review.

@TheRealMDoerr Thank you for your suggestion.  I think I understand the mechanism.  I'll update my patch after verifing my change and running jtreg.

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PR: https://git.openjdk.java.net/jdk/pull/2095