Pass In LLVM To Count the Number of Instructions in It

You can read the full tutorial here: Read the Full Tutorial

This tutorial explores FunctionCount.cpp, a practical implementation of the Function Count Pass in the LLVM compiler infrastructure. This code analyzes the number of functions within a given module and is crucial for profiling, debugging, or optimizing compiler passes.

Key Highlights:

• What is FunctionCount.cpp? FunctionCount.cpp is an example of a custom LLVM pass that iterates over the functions in a module and counts their occurrences. It demonstrates how to use the LLVM API to gather insights into the structure and composition of LLVM IR (Intermediate Representation).
• Why is it Important? This implementation provides insights into function-level details, helping in optimizing compilation time, debugging, and identifying unused or redundant functions in complex codebases.
• Use Cases: Profiling function usage across a module.Identifying unused or rarely invoked functions. Learning how to write custom passes for LLVM.

The tutorial walks you through the implementation of FunctionCount.cpp, providing examples and detailed explanations on effectively using it in your projects.

Why should you read it?

• You can learn how to implement custom LLVM passes using real-world examples.
• Understand the usage of the LLVM API for function-level analysis.
• Enhance your ability to debug and optimize your codebase.

Get Involved:

We encourage you to experiment with the FunctionCount.cpp example and dive deeper into the LLVM framework. Share your feedback and join the discussion on social media. We are here to help you master the intricacies of LLVM and compiler optimizations.

You can read the full tutorial here: Read the Full Tutorial