LLVM IR and Passes

Purpose

Teach agents to read and reason about LLVM IR (SSA, types, terminators), navigate the standard pass pipeline, and use opt/llvm-dis for inspection. Complements skills/compilers/llvm (toolchain) and skills/compiler-internals/llvm-passes (writing plugins) — not merged.

When to Use

• Understanding what -O2 changed in generated IR
• Triaging miscompiles between Clang versions
• Preparing to write a custom pass
• Teaching SSA and dominance without writing C++ passes yet

Workflow

1. LLVM IR structure