RFR: 8263200: Add -XX:StressCCP to CTW

[Igor Ignatyev]

On Mon, 8 Mar 2021 18:30:39 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Hi all,
>> 
>> could you please review the tiny patch which adds `-XX:+StressCCP` flag to CTW testlibrary?
>> 
>> from JBS:
>>> similar to StressLCM, StressGCM, and StressIGVN flags, recently introduced (by [JDK-8256535](https://bugs.openjdk.java.net/browse/JDK-8256535)) StressCCP can increase the probability to find compiler bugs, hence it makes sense to add this flag to CTW testlibrary.
>> 
>> testing:
>>  - [x] `test/hotspot/jtreg/applications/ctw/` 20 times on `{linux,windows,macosx}-x64` 
>>  - [x] `testlibrary_tests/ctw/` on `macosx-x64`
>> 
>> Thanks,
>> -- Igor
>
> Good.

Thanks, Vladimir

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PR: https://git.openjdk.java.net/jdk/pull/2877