build: update llvm 21.1.4 checksum

[star-hengxing]

Due to the GitHub 2 GiB release limit, we can't upload arm64-macosx-apple-release-lto.tar.xz.

I will draft another PR to fix it.

Summary by CodeRabbit

• Chores
  • Updated prebuilt LLVM artifacts to version 21.1.4 for Windows, Linux, and macOS build variants with refreshed checksums.
  • CI workflows updated to run when configuration files change, ensuring configuration updates trigger builds and checks.

[coderabbitai]

Walkthrough

Updated prebuilt LLVM artifact metadata to reference version 21.1.4 for most platform entries and refreshed SHA-256 checksums; added config/** to CI workflow path filters so changes under config/ trigger the CMake and XMake workflows.

Changes

Cohort / File(s)	Summary
LLVM configuration config/prebuilt-llvm.json	Updated prebuilt LLVM entries to reference 21.1.4 for most Windows, Linux, and macOS artifacts and replaced corresponding SHA-256 hashes. One macOS release-lto entry remained at 20.1.5 in the diff.
CI workflow triggers .github/workflows/cmake.yml, .github/workflows/xmake.yml	Added config/** to the paths filters for both push and pull_request triggers so changes under config/ will run these workflows.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Verify all SHA-256 checksums against official artifact sources.
• Confirm the single macOS release-lto entry intended to remain at 20.1.5 (or should be updated to 21.1.4).
• Ensure CI path filters behave as expected and don't unintentionally broaden triggers.

Possibly related PRs

• build: update llvm to 21.1.4 #292 — Updates/prepares project for LLVM 21.1.4; touches config/prebuilt-llvm.json and build setup, likely closely related.

Poem

🐰 I found a hash beneath a tree,

Twenty-one point four for you and me,
Windows, Linux, Mac in line,
CI listens when configs shine,
Hop—builds run smooth and free!

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change: updating LLVM to version 21.1.4 with new checksums across multiple configuration files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch llvm-21.1.4

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 74e856d and c5cb2fd.

📒 Files selected for processing (2)

• .github/workflows/cmake.yml (1 hunks)
• .github/workflows/xmake.yml (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (8)

• GitHub Check: macos (macos-15, release)
• GitHub Check: macos (macos-15, debug)
• GitHub Check: windows (windows-2025)
• GitHub Check: linux (ubuntu-24.04, debug)
• GitHub Check: linux (ubuntu-24.04, release)
• GitHub Check: build (windows-2025)
• GitHub Check: build (macos-15)
• GitHub Check: build (ubuntu-24.04)

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