RFR: 8307997: gtest:ZIndexDistributorTest fails on PPC64

[Stefan Karlsson]

On Mon, 15 May 2023 07:57:34 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> ZindexDistributorTest was written with the assumption that `ZCacheLineSize == 64`, which isn't the case on PPC. I've updated the test to handle this case.
> 
> Tested by temporarily changing ZCacheLineSize to 128. I also added two more cases just to disambiguate the counts in one of the test.

Thanks for reviewing! Given that this fixes a tier1 failure for PPC and that this is a small change limited to the test, I'll go ahead integrate it now.

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PR Comment: https://git.openjdk.org/jdk/pull/13977#issuecomment-1547897354