https://bugs.openjdk.org/browse/JDK-8293841 added support for Foreign Function & Memory API on RISC-V.

Run following foreign jtreg test with fastdebug build on linux-riscv64 platform (issue is not reproducible with release build):

$ make run-test-only TEST="./test/jdk/java/foreign/TestSpliterator.java" TEST_VM_OPTS="-XX:-TieredCompilation" JTREG="TIMEOUT_FACTOR=24"

```
STDOUT:
test TestSpliterator.testBadSpliteratorElementSizeNotMultiple(): success
test TestSpliterator.testBadSpliteratorElementSizeTooBig(): success
test TestSpliterator.testBadSpliteratorElementSizeZero(): success
test TestSpliterator.testBadStreamElementSizeNotMultiple(): success
test TestSpliterator.testBadStreamElementSizeTooBig(): success
test TestSpliterator.testBadStreamElementSizeZero(): success
test TestSpliterator.testHyperAligned(): success
test TestSpliterator.testSpliteratorElementSizeMultipleButNotPowerOfTwo(): success
test TestSpliterator.testStreamElementSizeMultipleButNotPowerOfTwo(): success
test TestSpliterator.testSum(10, 1): success
test TestSpliterator.testSum(100, 1): success
test TestSpliterator.testSum(1000, 1): success
test TestSpliterator.testSum(10000, 1): success
test TestSpliterator.testSum(10, 10): success
test TestSpliterator.testSum(100, 10): success
test TestSpliterator.testSum(1000, 10): success
test TestSpliterator.testSum(10000, 10): success
test TestSpliterator.testSum(10, 100): success
test TestSpliterator.testSum(100, 100): success
test TestSpliterator.testSum(1000, 100): success
test TestSpliterator.testSum(10000, 100): success
test TestSpliterator.testSum(10, 1000): success
test TestSpliterator.testSum(100, 1000): success
test TestSpliterator.testSum(1000, 1000): success
test TestSpliterator.testSum(10000, 1000): success
test TestSpliterator.testSum(10, 10000): success
test TestSpliterator.testSum(100, 10000): success
test TestSpliterator.testSum(1000, 10000): success
test TestSpliterator.testSum(10000, 10000): success
o1206 CMoveL === _ o2270 o2271 [[ o2277 o1219 o1222 o1224 162 ]] #long:minint..maxint:www

--N: o1206 CMoveL === _ o2270 o2271 [[ o2277 o1219 o1222 o1224 162 ]] #long:minint..maxint:www

   --N: o2270 Binary === _ o1205 o1361 [[ o1206 ]]
   _Binary_cmpOp__CmpI_iRegI_iRegI 101 _Binary_cmpOp__CmpI_iRegI_iRegI

      --N: o1205 Bool === _ o1361 [[ o2270 ]] [lt]
      CMPOP 1 CMPOP
      CMPOPU 1 CMPOPU
      CMPOPULTGE 0 CMPOPULTGE

      --N: o1361 CmpI === _ o1173 o21 [[ o1205 o2270 ]]
      _CmpI_iRegI_iRegI 100 _CmpI_iRegI_iRegI
      _CmpI_iRegI_immI0 0 _CmpI_iRegI_immI0

         --N: o1173 Phi === o1172 o42 o1319 [[ o1176 o1175 o1191 o1274 o1195 o395 o1361 o1286 o599 o1559 o1590 ]] #int
         IREGI 0 IREGI
         IREGINOSP 0 IREGINOSP
         IREGI_R10 0 IREGI_R10
         IREGI_R12 0 IREGI_R12
         IREGI_R13 0 IREGI_R13
         IREGI_R14 0 IREGI_R14
         IREGIHEAPBASE 0 IREGIHEAPBASE
         IREGIORL2I 0 IREGI
         IREGIORL 0 IREGI
         IREGILNP 0 IREGI
         IREGILNPNOSP 0 IREGINOSP

         --N: o21 ConI === o0 [[ o1074 o1361 o2261 o2279 ]] #int:0
         IMMI 0 IMMI
         IMMI0 0 IMMI0
         IMMI_LE_4 0 IMMI_LE_4
         IMMIADD 0 IMMIADD
         IMMISUB 0 IMMISUB
         IMMI5 0 IMMI5
         IMMIOFFSET 0 IMMIOFFSET
         IREGI 100 loadConI
         IREGINOSP 100 loadConI
         IREGI_R10 100 loadConI
         IREGI_R12 100 loadConI
         IREGI_R13 100 loadConI
         IREGI_R14 100 loadConI
         IREGIORL2I 100 IREGI
         IREGIORL 100 IREGI
         IREGILNP 100 IREGI
         IREGILNPNOSP 100 IREGINOSP
         IMMIORL 0 IMMI

   --N: o2271 Binary === _ o1195 o41 [[ o1206 ]]
   _Binary_iRegL_iRegL 100 _Binary_iRegL_iRegL
   _Binary_iRegLNoSp_iRegL 101 _Binary_iRegLNoSp_iRegL

      --N: o1195 ConvI2L === _ o1173 [[ o1360 o1362 o1224 o1209 o2271 o395 o395 o395 ]] #long:minint..maxint
      IREGL 0 IREGL
      IREGLNOSP 1 IREGLNOSP
      IREGL_R28 0 IREGL_R28
      IREGL_R29 0 IREGL_R29
      IREGL_R30 0 IREGL_R30
      IREGL_R10 0 IREGL_R10
      IREGIORL 0 IREGL
      IREGILNP 0 IREGL
      IREGILNPNOSP 1 IREGLNOSP

      --N: o41 ConL === o0 [[ o395 o1056 o578 o395 o2259 o1236 o2271 ]] #long:0
      IMML5 0 IMML5
      IMML 0 IMML
      IMML0 0 IMML0
      IMMLADD 0 IMMLADD
      IMMLSUB 0 IMMLSUB
      IMMLOFFSET 0 IMMLOFFSET
      IREGL 100 loadConL
      IREGLNOSP 100 loadConL
      IREGL_R28 100 loadConL
      IREGL_R29 100 loadConL
      IREGL_R30 100 loadConL
      IREGL_R10 100 loadConL
      IREGIORL 100 IREGL
      IREGILNP 100 IREGL
      IREGILNPNOSP 100 IREGLNOSP
      IMMIORL 0 IMML

# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/matcher.cpp:1709
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/home/fyang/openjdk-jdk/src/hotspot/share/opto/matcher.cpp:1709), pid=1774058, tid=1774086
# assert(false) failed: bad AD file
#
# JRE version: OpenJDK Runtime Environment (21.0) (fastdebug build 21-internal-adhoc.fyang.openjdk-jdk)
# Java VM: OpenJDK 64-Bit Server VM (fastdebug 21-internal-adhoc.fyang.openjdk-jdk, mixed mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-riscv64)
# Problematic frame:
# V [libjvm.so+0x10210c4] Matcher::Label_Root(Node const*, State*, Node*, Node*&)+0x3d0
#
# Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport -p%p -s%s -c%c -d%d -P%P -u%u -g%g -- %E" (or dumping to /home/fyang/openjdk-jdk/build/linux-riscv64-server-fastdebug/test-support/jtreg_test_jdk_jdk_foreign/scratch/1/core.1774058)
#
# An error report file with more information is saved as:
# /home/fyang/openjdk-jdk/build/linux-riscv64-server-fastdebug/test-support/jtreg_test_jdk_jdk_foreign/scratch/1/hs_err_pid1774058.log
test TestSpliterator.testSumSameThread(): success

===============================================
java/foreign/TestSpliterator.java
Total tests run: 30, Passes: 30, Failures: 0, Skips: 0
===============================================
```