RFR: 8251462: Remove legacy compilation policy [v5]

[Igor Veresov]

On Mon, 25 Jan 2021 17:57:29 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Igor Veresov has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Address Vladimir's review comments
>
> Looks better now. I would like to see result of performance testing before approving.

I asked Eric to run the benchmarks. The results should be ready on Wednesday.

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PR: https://git.openjdk.java.net/jdk/pull/1985