RFR: 8293170: Improve encoding of the debuginfo nmethod section [v18]

[Evgeny Astigeevich]

On Thu, 15 Dec 2022 13:51:45 GMT, Boris Ulasevich <bulasevich at openjdk.org> wrote:

>> The nmethod "scopes data" section is 10% of the size of nmethod. Now the data is compressed using the Pack200 algorithm, which is good for encoding small integers (LineNumberTable, etc). Using the fact that half of the data in the partition contains zeros, I reduce its size by another 30%.
>>  
>> Testing: jtreg hotspot&jdk, Renaissance benchmarks
>
> Boris Ulasevich has updated the pull request incrementally with one additional commit since the last revision:
> 
>   cleanup, rename and some testing

I have no other comments. Lgtm.

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Marked as reviewed by eastigeevich (Committer).

PR: https://git.openjdk.org/jdk/pull/10025