RFR: 8290025: Remove the Sweeper [v2]

[Erik Österlund]

On Thu, 4 Aug 2022 15:55:20 GMT, Axel Boldt-Christmas <duke at openjdk.org> wrote:

>> Erik Österlund has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Feedback v1
>
> src/hotspot/share/code/nmethod.cpp line 1541:
> 
>> 1539:         Universe::heap()->unregister_nmethod(this);
>> 1540:       }
>> 1541:       flush_dependencies(/*delete_immediately*/true);
> 
> `flush_dependencies` is now only ever called with `false`

Good catch. I removed it, and some remove_dependent methods that were only used in the true version that is no longer called.

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PR: https://git.openjdk.org/jdk/pull/9741