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

[Varada M]

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
ArrayClone.intArraycopy        0  avgt   15  113.788 ?  0.770  ns/op
ArrayClone.intArraycopy       10  avgt   15  131.980 ?  2.102  ns/op
ArrayClone.intArraycopy      100  avgt   15  213.745 ?  2.615  ns/op
ArrayClone.intArraycopy     1000  avgt   15  460.820 ?  7.106  ns/op
ArrayClone.intClone            0  avgt   15   42.074 ?  0.547  ns/op
ArrayClone.intClone           10  avgt   15   80.125 ?  1.735  ns/op
ArrayClone.intClone          100  avgt   15  207.313 ?  2.717  ns/op
ArrayClone.intClone         1000  avgt   15  326.546 ?  5.671  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



Hotspot compiler tests results : 


==============================
Test summary
==============================
   TEST                                              TOTAL  PASS  FAIL ERROR   
>> jtreg:test/hotspot/jtreg:hotspot_compiler          1170  1168     2     0 <<
==============================
TEST FAILURE


2 test failures shown here is not related to code change. It is present without this changes


Reported Issue : [JDK-8331935](https://bugs.openjdk.org/browse/JDK-8331935)

-------------

Commit messages:
 - Add support for primitive array C1 clone intrinsic
 - Add support for primitive array C1 clone intrinsic

Changes: https://git.openjdk.org/jdk/pull/19250/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19250&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331935
  Stats: 60 lines in 6 files changed: 28 ins; 2 del; 30 mod
  Patch: https://git.openjdk.org/jdk/pull/19250.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19250/head:pull/19250

PR: https://git.openjdk.org/jdk/pull/19250