8347116: C2 SuperWord: If-Conversion

[eme64]

TODO

---

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

Error

 ⚠️ Pull request body is missing required line: - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).

Issue

• JDK-8347116: C2 SuperWord: If-Conversion (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/30668/head:pull/30668
$ git checkout pull/30668

Update a local copy of the PR:
$ git checkout pull/30668
$ git pull https://git.openjdk.org/jdk.git pull/30668/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 30668

View PR using the GUI difftool:
$ git pr show -t 30668

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/30668.diff

[bridgekeeper]

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

[openjdk]

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