8366747: RISC-V: Improve VerifyMethodHandles for method handle linkers

[RealFYang]

Hi all,

This pull request contains a backport of commit 0d7f8f83 from the openjdk/jdk repository.

The commit being backported was authored by Anjian Wen on 5 Sep 2025 and was reviewed by Fei Yang and Dingli Zhang.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• JDK-8366747 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8366747: RISC-V: Improve VerifyMethodHandles for method handle linkers (Enhancement - P4 - Requested)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/38/head:pull/38
$ git checkout pull/38

Update a local copy of the PR:
$ git checkout pull/38
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/38/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 38

View PR using the GUI difftool:
$ git pr show -t 38

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u-dev/pull/38.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back fyang! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @RealFYang This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (fe3099f4)

[RealFYang]

/approval request Clean backport which improves VerifyMethodHandles for method handle linkers on RISC-V.
Backport for testing and validation purposes. hs:tier1-hs:tier3 verified using fastdebug on linux-riscv64 with -XX:+VerifyMethodHandles.

[openjdk]

@RealFYang
8366747: The approval request has been created successfully.