RFR: 8331935: Add support for primitive array C1 clone intrinsic in PPC [v4]

[Martin Doerr]

On Tue, 21 May 2024 12:11:13 GMT, Varada M <varadam at openjdk.org> wrote:

>> https://bugs.openjdk.org/browse/JDK-8302850 port for PPC64
>> 
>> JMH Benchmark Results
>> 
>> 
>> Before :
>> 
>> Benchmark                 (size)  Mode  Cnt    Score   Error  Units
>> ArrayClone.byteArraycopy       0  avgt   15  114.107 ? 1.337  ns/op
>> ArrayClone.byteArraycopy      10  avgt   15  130.492 ? 0.991  ns/op
>> ArrayClone.byteArraycopy     100  avgt   15  139.103 ? 1.913  ns/op
>> ArrayClone.byteArraycopy    1000  avgt   15  321.688 ? 6.033  ns/op
>> ArrayClone.byteClone           0  avgt   15  227.602 ? 3.393  ns/op
>> ArrayClone.byteClone          10  avgt   15  237.624 ? 2.996  ns/op
>> ArrayClone.byteClone         100  avgt   15  239.219 ? 2.835  ns/op
>> 
>> ArrayClone.byteClone        1000  avgt   15  355.571 ? 2.946  ns/op
>> ArrayClone.intArraycopy        0  avgt   15  113.275 ? 1.099  ns/op
>> ArrayClone.intArraycopy       10  avgt   15  129.763 ? 1.458  ns/op
>> ArrayClone.intArraycopy      100  avgt   15  213.327 ? 2.524  ns/op
>> ArrayClone.intArraycopy     1000  avgt   15  449.650 ? 7.338  ns/op
>> ArrayClone.intClone            0  avgt   15  225.682 ? 3.048  ns/op
>> ArrayClone.intClone           10  avgt   15  234.532 ? 2.817  ns/op
>> ArrayClone.intClone          100  avgt   15  295.934 ? 4.925  ns/op
>> ArrayClone.intClone         1000  avgt   15  573.368 ? 5.739  ns/op
>> Finished running test 'micro:java.lang.ArrayClone'
>> Test report is stored in build/aix-ppc64-server-release/test-results/micro_java_lang_ArrayClone
>> 
>> ==============================
>> Test summary
>> ==============================
>>    TEST                                              TOTAL  PASS  FAIL ERROR   
>>    micro:java.lang.ArrayClone                            1     1     0     0   
>> ==============================
>> TEST SUCCESS
>> 
>> Finished building target 'test' in configuration 'aix-ppc64-server-release'
>> 
>> 
>> 
>> 
>> After:
>> 
>> Benchmark                 (size)  Mode  Cnt    Score    Error  Units
>> ArrayClone.byteArraycopy       0  avgt   15  113.894 ?  0.993  ns/op
>> ArrayClone.byteArraycopy      10  avgt   15  131.455 ?  0.956  ns/op
>> ArrayClone.byteArraycopy     100  avgt   15  139.145 ?  3.002  ns/op
>> ArrayClone.byteArraycopy    1000  avgt   15  315.957 ? 14.591  ns/op
>> ArrayClone.byteClone           0  avgt   15   43.753 ?  3.669  ns/op
>> ArrayClone.byteClone          10  avgt   15   52.329 ?  1.041  ns/op
>> ArrayClone.byteClone         100  avgt   15  127.711 ?  3.938  ns/op
>> 
>> ArrayClone.byteClone        1000  avgt   15  225.937 ?  1.987  ns/op
>> Arr...
>
> Varada M has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:
> 
>  - Merge branch 'master' into arryClone
>  - Add support for primitive array C1 clone intrinsic
>  - Add support for primitive array C1 clone intrinsic
>  - Add support for primitive array C1 clone intrinsic
>  - Add support for primitive array C1 clone intrinsic

I've put it again into our nightly tests and haven't seen any errors which may have been caused by this PR. There are currently some unrelated errors. So, I think it's good to go.

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PR Comment: https://git.openjdk.org/jdk/pull/19250#issuecomment-2139532656