RFR: 8263006: Add optimization for Max(*)Node and Min(*)Node [v2]

[Wang Huang]

On Mon, 19 Apr 2021 19:55:08 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Wang Huang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   adjust code style
>
> Thank you for answers.
> The test should be part of changes.

Could you do me a favor to review the patch? @vnkozlov @mgkwill  Thank you.

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PR: https://git.openjdk.java.net/jdk/pull/3513