Individual skill

llvm

Use when working with LLVM IR as a user: emitting IR from clang, running opt passes, lowering with llc, reading IR, or finding a missed optimization. Not for writing new passes: use llvm-passes.

.devin/skills/llvm/SKILL.md

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License: Apache-2.0

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# LLVM IR and tooling

## Contract

| Field | Bound contract |
|---|---|
| Trigger | The user wants to see the IR for a function, run or inspect optimization passes with `opt`, lower IR to assembly with `llc`, read an IR construct, or find out why a transform did not fire. |
| Authority | Read-only. Commands write `.ll`, `.bc`, `.s`, and `.o` files only into a scratch location the user names; the project tree is not modified. Rollback is deleting the scratch outputs. No remote mutation. |
| Side effect | Scratch IR and object files; chat output. |
| Done | The requested IR, pass output, or lowering exists in the scratch location, and each construct or remark the user asked about has a one-line reading. |

## Inputs

- LLVM version: required, from `opt --version`. Current stable is LLVM 23.1.0; pass names below are new-pass-manager names and apply to any line since 14.