[lilliput-jdk17u:lilliput] RFR: 8312095: [Lilliput/JDK17] Reinstate use of BiasedLockingCounters [v2]

[Aleksey Shipilev]

On Fri, 14 Jul 2023 14:13:53 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

>> In x86_64.ad we accidentally dropped _counters to NULL in a fast_lock() call. This means we're not counting BiasedLocking calls correctly. Let's fix that. It is only relevant in 17 because biased locking has been removed in later release.
>> 
>> Testing:
>>  - [ ] tier1 +UseBiasedLocking
>
> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
> 
>   x86_32.ad fix

Marked as reviewed by shade (Reviewer).

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PR Review: https://git.openjdk.org/lilliput-jdk17u/pull/52#pullrequestreview-1530386879