RFR: 8349686: [s390x] C1: Improve Class.isInstance intrinsic [v9]

[Coleen Phillimore]

On Thu, 20 Feb 2025 11:43:08 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

>> s390x implementation for Class.isInstance intrinsic. 
>> 
>> Tier1 test on release & fastdebug vm are clean with flag: `-XX:-UseSecondarySupersCache -XX:+UseSecondarySupersTable -XX:+VerifySecondarySupers -XX:+StressSecondarySupers`. 
>> 
>> Benchmark results will be updated soon.
>
> Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   no need of Z_R0_scratch

Can you run your benchmark on that?  The JIT compiler should be able to generate inlined code for it.

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PR Comment: https://git.openjdk.org/jdk/pull/23535#issuecomment-2671998298