RFR: 8267982: Set the node after peephole optimization to be removed [v9]

[SUN Guoyun]

On Fri, 25 Jun 2021 05:56:35 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> SUN Guoyun has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8267982: Set the node after peephole optimization to be removed
>
> Good.
> Tier1-3 testing passed clean.

@vnkozlov  Could you please sponsor it for me?

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PR: https://git.openjdk.java.net/jdk/pull/4276