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Create Your Own LLVM Pass as a Plugin (Step-by-Step Guide)

f you're getting into compilers or exploring LLVM internals, one of the most powerful things you can learn is how to build your own LLVM Pass.

I’ve put together a hands-on guide that walks you through creating an LLVM pass as a plugin — something that’s actually used in real-world compiler workflows.

💡 What You’ll Learn
How LLVM passes work internally
How to create a custom pass from scratch
How to structure your plugin
How to build it using CMake
How to dynamically load and run it in LLVM
🔧 Why This Matters

Most developers use compilers as a black box. But if you're serious about:

Compiler development
Performance optimization
Static analysis
Systems programming

…then understanding LLVM passes is a game-changer.

📚 Full Guide

👉 https://www.compilersutra.com/docs/llvm/llvm_basic/pass/Create_LLVM_Pass_As_A_Plugin

🧠 Who Is This For?
Students learning compilers
Engineers exploring LLVM
Anyone building tooling around code analysis or optimisation

If you're building something cool with LLVM, I’d love to hear about it 👇
Let’s push the boundaries of compilers together.

llvm #compilers #cpp #systems #opensource #programming

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