[jdk21u-dev] RFR: 8341146: RISC-V: Unnecessary fences used for load-acquire in template interpreter

[Gui Cao]

Hi, The same issue also exists in the jdk21u. I would like to backport 8341146 to jdk21u-dev. becasue jdk21u-dev not have [JDK-8301997](https://bugs.openjdk.org/browse/JDK-8301997), so this backport is not clean. This is a risc-v specific change, risk is low. 

### Testing on SOPHON SG2042 (release) 
- [x] JCstress
- [x] Run tier1 tests
- [x] ~5% improvement on SPECJbb2005 score (-Xint -XX:+UseParallelGC)

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Commit messages:
 - Backport 8341146: RISC-V: Unnecessary fences used for load-acquire in template interpreter

Changes: https://git.openjdk.org/jdk21u-dev/pull/1044/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1044&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341146
  Stats: 7 lines in 2 files changed: 0 ins; 7 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1044.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1044/head:pull/1044

PR: https://git.openjdk.org/jdk21u-dev/pull/1044