RFR: 8341068: [s390x] intrinsics for divideUnsigned and remainderUnsigned methods in java.lang.Integer and java.lang.Long [v2]

[Amit Kumar]

> Add match rules for UDivI, UModI, UDivL, UModL. And also adds `dlr` and `dlgr` instruction. 
> 
> Tier1 test are clean for fastdebug vm; 
> 
> Before this patch, `compiler/c2/TestDivModNodes.java` was failing (see jbs issue) but with this patch test is passing. 
> 
> Without Patch: 
> 
> 
> Benchmark                                  (BUFFER_SIZE)  (divisorType)  Mode  Cnt     Score     Error  Units
> IntegerDivMod.testDivideRemainderUnsigned           1024          mixed  avgt   15  1935.176 ±   2.191  ns/op
> IntegerDivMod.testDivideRemainderUnsigned           1024       positive  avgt   15  1934.915 ±   3.207  ns/op
> IntegerDivMod.testDivideRemainderUnsigned           1024       negative  avgt   15  1934.325 ±   1.108  ns/op
> IntegerDivMod.testDivideUnsigned                    1024          mixed  avgt   15  1809.782 ±  49.341  ns/op
> IntegerDivMod.testDivideUnsigned                    1024       positive  avgt   15  1769.326 ±   2.607  ns/op
> IntegerDivMod.testDivideUnsigned                    1024       negative  avgt   15  1784.053 ±  71.190  ns/op
> IntegerDivMod.testRemainderUnsigned                 1024          mixed  avgt   15  2026.978 ±   1.534  ns/op
> IntegerDivMod.testRemainderUnsigned                 1024       positive  avgt   15  2028.039 ±   3.812  ns/op
> IntegerDivMod.testRemainderUnsigned                 1024       negative  avgt   15  2437.843 ± 636.808  ns/op
> Finished running test 'micro:java.lang.IntegerDivMod'
> 
>  
> Benchmark                               (BUFFER_SIZE)  (divisorType)  Mode  Cnt     Score    Error  Units
> LongDivMod.testDivideRemainderUnsigned           1024          mixed  avgt   15  4524.897 ± 16.566  ns/op
> LongDivMod.testDivideRemainderUnsigned           1024       positive  avgt   15  4373.714 ±  9.514  ns/op
> LongDivMod.testDivideRemainderUnsigned           1024       negative  avgt   15  2018.309 ±  1.788  ns/op
> LongDivMod.testDivideUnsigned                    1024          mixed  avgt   15  4320.382 ± 19.055  ns/op
> LongDivMod.testDivideUnsigned                    1024       positive  avgt   15  3988.953 ±  8.770  ns/op
> LongDivMod.testDivideUnsigned                    1024       negative  avgt   15  1069.703 ±  1.525  ns/op
> LongDivMod.testRemainderUnsigned                 1024          mixed  avgt   15  5589.319 ±  4.247  ns/op
> LongDivMod.testRemainderUnsigned                 1024       positive  avgt   15  3904.555 ±  3.191  ns/op
> LongDivMod.testRemainderUnsigned                 1024       negative  avgt   15  1765.761 ±  1.539  ns/op
> Finished ...

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  changes leftmost->upper and rightmost -> lower

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21559/files
  - new: https://git.openjdk.org/jdk/pull/21559/files/b39788e2..c94cc448

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21559&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21559&range=00-01

  Stats: 10 lines in 1 file changed: 0 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/21559.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21559/head:pull/21559

PR: https://git.openjdk.org/jdk/pull/21559