RFR: 8331934: [s390x] Add support for primitive array C1 clone intrinsic

[Amit Kumar]

Adds JDK-8302850 Port for s390x. 

Testing: 

make test TEST="hotspot_compiler" JTREG="JAVA_OPTIONS=-XX:TieredStopAtLevel=1"

==============================                                                                                                          
Test summary                                                                                                                            
==============================                                                                                                          
   TEST                                              TOTAL  PASS  FAIL ERROR                                                            
   jtreg:test/hotspot/jtreg:hotspot_compiler          1166  1166     0     0                                                            
==============================                                                                                                          
TEST SUCCESS

* Tier1 Test with Fast debug build. 

BenchMarking:


Without Patch: 

Benchmark                 (size)  Mode  Cnt     Score    Error  Units
ArrayClone.byteArraycopy       0  avgt   15    10.838 ±  0.461  ns/op
ArrayClone.byteArraycopy      10  avgt   15    28.919 ±  1.695  ns/op
ArrayClone.byteArraycopy     100  avgt   15    48.815 ±  0.901  ns/op
ArrayClone.byteArraycopy    1000  avgt   15   256.357 ±  7.901  ns/op
ArrayClone.byteClone           0  avgt   15    90.398 ±  3.119  ns/op
ArrayClone.byteClone          10  avgt   15   103.774 ±  4.468  ns/op
ArrayClone.byteClone         100  avgt   15   126.628 ±  6.952  ns/op
ArrayClone.byteClone        1000  avgt   15   326.409 ± 31.635  ns/op
ArrayClone.intArraycopy        0  avgt   15    10.450 ±  0.509  ns/op
ArrayClone.intArraycopy       10  avgt   15    36.903 ±  0.753  ns/op
ArrayClone.intArraycopy      100  avgt   15    85.964 ±  1.806  ns/op
ArrayClone.intArraycopy     1000  avgt   15   841.512 ± 40.335  ns/op
ArrayClone.intClone            0  avgt   15    89.332 ±  3.695  ns/op
ArrayClone.intClone           10  avgt   15   110.639 ±  2.476  ns/op
ArrayClone.intClone          100  avgt   15   195.781 ±  8.622  ns/op
ArrayClone.intClone         1000  avgt   15  1058.479 ± 92.468  ns/op
Finished running test 'micro:java.lang.ArrayClone'


with patch:

Benchmark                 (size)  Mode  Cnt    Score    Error  Units
ArrayClone.byteArraycopy       0  avgt   15   10.526 ±  0.289  ns/op
ArrayClone.byteArraycopy      10  avgt   15   27.110 ±  0.656  ns/op
ArrayClone.byteArraycopy     100  avgt   15   49.872 ±  1.562  ns/op
ArrayClone.byteArraycopy    1000  avgt   15  269.518 ±  4.567  ns/op
ArrayClone.byteClone           0  avgt   15   10.766 ±  0.899  ns/op
ArrayClone.byteClone          10  avgt   15   18.341 ±  0.394  ns/op
ArrayClone.byteClone         100  avgt   15   40.986 ±  0.674  ns/op
ArrayClone.byteClone        1000  avgt   15  227.512 ±  7.643  ns/op
ArrayClone.intArraycopy        0  avgt   15   10.320 ±  0.294  ns/op
ArrayClone.intArraycopy       10  avgt   15   36.557 ±  0.860  ns/op
ArrayClone.intArraycopy      100  avgt   15   89.837 ±  2.364  ns/op
ArrayClone.intArraycopy     1000  avgt   15  836.678 ± 27.920  ns/op
ArrayClone.intClone            0  avgt   15   10.043 ±  0.216  ns/op
ArrayClone.intClone           10  avgt   15   29.149 ±  0.723  ns/op
ArrayClone.intClone          100  avgt   15   88.046 ±  2.211  ns/op
ArrayClone.intClone         1000  avgt   15  840.163 ± 58.748  ns/op
Finished running test 'micro:java.lang.ArrayClone'

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

Depends on: https://git.openjdk.org/jdk/pull/17667

Commit messages:
 - s390x Port

Changes: https://git.openjdk.org/jdk/pull/19220/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19220&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331934
  Stats: 47 lines in 6 files changed: 23 ins; 2 del; 22 mod
  Patch: https://git.openjdk.org/jdk/pull/19220.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19220/head:pull/19220

PR: https://git.openjdk.org/jdk/pull/19220