RFR: 8286302: Port JEP 425 to PPC64 [v7]

[Richard Reingruber]

On Tue, 22 Nov 2022 18:43:45 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

>>> It is better to use tag @enablePreview so --enable-preview is not needed.
>> 
>> Done
>> 
>>> Also, please remove -XX:+UnlockDiagnosticVMOptions where it is not required.
>> 
>> The release build requires -XX:+UnlockDiagnosticVMOptions for -XX:+WhiteBoxAPI.
>> 
>> Without I get
>> 
>> 
>> Error: VM option 'WhiteBoxAPI' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.
>> Error: The unlock option must precede 'WhiteBoxAPI'.
>> Error: Could not create the Java Virtual Machine.
>> Error: A fatal exception has occurred. Program will exit.
>
> Sorry, I meant -XX:+IgnoreUnrecognizedVMOptions where it is not needed. I think it is needed only to don't fail when -XX:+VerifyContinuations  is used in product mode and not needed in other testcases

Ok (I thought so). I've fixed it now.

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PR: https://git.openjdk.org/jdk/pull/10961