RFR: 8264872: Dependencies: Migrate to PerfData counters

[Nils Eliasson]

On Fri, 9 Apr 2021 11:15:54 GMT, Nils Eliasson <neliasso at openjdk.org> wrote:

>> Migrate performance counters on `Dependencies` (`deps_find_witness_*`) to `PerfData`.
>> 
>> Testing:
>> - [x] hs-tier1 - hs-tier2
>
> src/hotspot/share/code/dependencies.cpp line 1212:
> 
>> 1210: };
>> 1211: 
>> 1212: PerfCounter* ClassHierarchyWalker::_perf_find_witness_anywhere_calls_count   = NULL;
> 
> Align '=' on all three or skip extra space

I'm refering to the whitespace before '= NULL'

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PR: https://git.openjdk.java.net/jdk/pull/3386