RFR: 8261137: Optimization of Box nodes in uncommon_trap [v13]

[Wang Huang]

On Thu, 1 Apr 2021 17:44:15 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Wang Huang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   trivial fix
>
> Good.

@vnkozlov Can you do me a favor to `/sponsor` this patch?

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PR: https://git.openjdk.java.net/jdk/pull/2401