RFR: 8254104: MethodCounters must exist before nmethod is installed [v2]

[Vladimir Kozlov]

On Wed, 7 Oct 2020 16:22:21 GMT, Igor Veresov <iveresov at openjdk.org> wrote:

>> Ensure that MethodCounters for a particular method exist during the nmethod install (for methods that were never run
>> before). Tiered compilation policy depends on the state stored in the counters to function properly.
>
> Igor Veresov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Allocate counters unconditionally.

OK

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/543