RFR: 8358892: RISC-V: jvm crash when running dacapo sunflow after JDK-8352504

[Hamlin Li]

Hi,
Can you help to review this patch?

Thanks!

Currently, this issue is only reproducible with Dacapo sunflow.
I tried to construct a simpler jtreg test to reproduce the issue, but can not find a way to do it till now, this task is tracked by https://bugs.openjdk.org/browse/JDK-8359045.

So, currently I can only verify the code by reviewing it.
Or maybe it's better to leave it until we find the test?

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Commit messages:
 - initial commit

Changes: https://git.openjdk.org/jdk/pull/25696/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25696&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358892
  Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25696.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25696/head:pull/25696

PR: https://git.openjdk.org/jdk/pull/25696