8385855: C2: IfNode::filtered_int_type should only allow CmpI

[eme64]

Hi all,

This pull request contains a backport of commit 841e2882 from the openjdk/jdk repository.

The commit being backported was authored by Emanuel Peter on 15 Jun 2026 and was reviewed by Vladimir Kozlov, Quan Anh Mai and Marc Chevalier.

Thanks!

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8385855: C2: IfNode::filtered_int_type should only allow CmpI (Bug - P3)

Reviewers

• Quan Anh Mai (@merykitty - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/31516/head:pull/31516
$ git checkout pull/31516

Update a local copy of the PR:
$ git checkout pull/31516
$ git pull https://git.openjdk.org/jdk.git pull/31516/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 31516

View PR using the GUI difftool:
$ git pr show -t 31516

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/31516.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back epeter! A progress list of the required criteria for merging this PR into jdk27 will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@eme64 This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8385855: C2: IfNode::filtered_int_type should only allow CmpI

Reviewed-by: qamai

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been no new commits pushed to the jdk27 branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the jdk27 branch, type /integrate in a new comment.

[openjdk]

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

[openjdk]

@eme64 The following label will be automatically applied to this pull request:

• hotspot-compiler

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 00: Full (ed86ca7c)

[merykitty]

Looks good to me.