RFR: JDK-8322648: Improve class initialization barrier in TemplateTable::_new for PPC [v4]

[Martin Doerr]

On Tue, 30 Jan 2024 09:37:46 GMT, Varada M <varadam at openjdk.org> wrote:

>> ppc port implementation of https://github.com/openjdk/jdk/pull/17006
>> 
>> Fastdebug and Release : build and tier1 testing successful.
>> 
>> JBS Issue : [JDK-8322648](https://bugs.openjdk.org/browse/JDK-8322648)
>
> Varada M has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8322648: Improve class initialization barrier in TemplateTable::_new for PPC

We usually wait for a 2nd review, but this PR is tiny and we have run a lot of tests. So, let's ship it!

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PR Comment: https://git.openjdk.org/jdk/pull/17518#issuecomment-1918452205