[jdk25u] RFR: 8367692: RISC-V: Align post call nop

Wed Oct 8 12:37:51 UTC 2025

Hi all,

This pull request contains a backport of commit [07ecc93d](https://github.com/openjdk/jdk/commit/07ecc93dbd0b74e2362d369e22b5141289eb1f76) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Robbin Ehn on 30 Sep 2025 and was reviewed by Fei Yang, Feilong Jiang and Hamlin Li.

Not clean!

Thanks!

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Commit messages:
 - Backport 07ecc93dbd0b74e2362d369e22b5141289eb1f76

Changes: https://git.openjdk.org/jdk25u/pull/281/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=281&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367692
  Stats: 133 lines in 7 files changed: 76 ins; 18 del; 39 mod
  Patch: https://git.openjdk.org/jdk25u/pull/281.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/281/head:pull/281

PR: https://git.openjdk.org/jdk25u/pull/281