RFR: 8297864: Dead code elimination [v3]

[Robbin Ehn]

On Thu, 1 Dec 2022 14:36:58 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fixed whitespace nit
>
> I agree, splitting this up would just waste time.  Please run this tool more often! I see some things I should have removed in here, and some things that were proactively added can be added when there's code to use them.
> Looks wonderful.  Will make the code easier to maintain.

Thanks @coleenp and @pchilano !

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PR: https://git.openjdk.org/jdk/pull/11439