RFR: 8230664: Fix TestInstanceKlassSize for PowerPC [v2]

[Martin Doerr]

On Thu, 1 Oct 2020 00:19:09 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

>> Ziviani has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains
>> one commit:
>>   8230664: Fix TestInstanceKlassSize
>>   
>>   The code hasStoredFingerprint() at InstanceKlass.java is not considering
>>   AOT disabled at compilation time, like has_stored_fingerprint() at
>>   instanceKlass.cpp does. Such difference can cause TestInstanceKlassSize
>>   failures because all objects will have an extra 8-bytes.
>
> LGTM

I think this fix deserves a new JBS issue. It doesn't resolve the rounding problem described in JDK-8230664. It fixes
an additiona issue.

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PR: https://git.openjdk.java.net/jdk/pull/358