[Refactor] Remove external buffer conflict check in pipeline injection

[LeiWang1999]

• Eliminated the check for external buffers used in multiple software pipeline loops, simplifying the pipeline injection logic. This change addresses potential conflicts in multi-versioning without compromising functionality.

for issue #1725

Summary by CodeRabbit

• Refactor
  • Streamlined pipeline buffer handling by removing redundant cross-pipeline validation logic.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[github-actions]

👋 Hi! Thank you for contributing to the TileLang project.

Please remember to run pre-commit run --all-files in the root directory of the project to ensure your changes are properly linted and formatted. This will help ensure your contribution passes the format check.

We appreciate you taking this step! Our team will review your contribution, and we look forward to your awesome work! 🚀

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

This pull request removes a validation pass from the pipeline injection transformation that previously checked whether external buffers from outer blocks were reused across multiple software pipeline loops. The deletion eliminates the conflict detection logic and its associated tracking state.

Changes

Cohort / File(s)	Summary
Pipeline Buffer Validation Removal src/transform/inject_pipeline.cc	Removed 13-line multi-buffer validation pass that enforced external buffers could not be shared across multiple software pipeline loops; deleted CHECK assertion and buffers_used_in_pipeline_ tracking state

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• tile-ai/tilelang#1525: Directly modifies the same file's pipeline buffer allocation/usage logic; the related PR adds buffer conflict checks while this PR removes them.

Poem

🐰 Constraints once guarded our buffers with care,
Cross-pipeline checks floating here and there,
But now they're gone, the validation's released,
Simpler pipelines, at least! ✨

✨ Finishing touches

• 📝 Generate docstrings

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}