RFR: 8301838: PPC: continuation yield intrinsic: exception check not needed if yield succeeded [v2]

[Richard Reingruber]

On Wed, 8 Feb 2023 09:21:25 GMT, Richard Reingruber <rrich at openjdk.org> wrote:

>> This small enhancement let's the continuation yield intrinsic return if the yield succeeded.
>> Doing so is ok because there will never be a pending exception if the yield succeeded.
>> 
>> All continuation tests succeeded.
>> 
>> GHA: some cross compiles failed because packages could not be downloaded. I tried to restart these but that didn't work.
>
> Richard Reingruber has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - freeze(JavaThread* current, intptr_t* sp) returns int, so use 32bit compare
>  - Remove duplicated return sequence as Lutz suggested

Thanks for the reviews.

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PR: https://git.openjdk.org/jdk/pull/12450