You're reading from LLVM Code Generation A deep dive into compiler backend development

Product type Paperback

Published in May 2025

Publisher Packt

ISBN-13 9781837637782

Length 620 pages

Edition 1st Edition

Languages

C++

Tools

LLVM

Concepts

Programming Language

Author (1):

Quentin Colombet

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Table of Contents (30) Chapters

Preface

1. Part 1: Getting Started with LLVM

2. Building LLVM and Understanding the Directory Structure FREE CHAPTER

3. Contributing to LLVM

4. Compiler Basics and How They Map to LLVM APIs

5. Writing Your First Optimization

6. Dealing with Pass Managers

7. TableGen – LLVM Swiss Army Knife for Modeling

8. Part 2: Middle-End: LLVM IR to LLVM IR

9. Understanding LLVM IR

10. Survey of the Existing Passes

11. Introducing Target-Specific Constructs

12. Hands-On Debugging LLVM IR Passes

13. Part 3: Introduction to the Backend

14. Getting Started with the Backend

15. Getting Started with the Machine Code Layer

16. The Machine Pass Pipeline

17. Part 4: LLVM IR to Machine IR

18. Getting Started with Instruction Selection

19. Instruction Selection: The IR Building Phase

20. Instruction Selection: The Legalization Phase

21. Instruction Selection: The Selection Phase and Beyond

22. Part 5: Final Lowering and Optimizations

23. Instruction Scheduling

24. Register Allocation

25. Lowering of the Stack Layout

26. Getting Started with the Assembler

27. Unlock Your Book’s Exclusive Benefits

28. Other Books You May Enjoy

29. Index

Technical requirements

As in the previous chapter, you’ll need a version of LLVM to play with the Machine IR. You can use either one of the recent LLVM releases – for instance, from LLVM 17 and up – or build LLVM directly from its source code. Please see Chapter 1 on how to build LLVM if you need help with that.

Additionally, in this book’s GitHub repository, which is available at https://github.com/PacktPublishing/LLVM-Code-Generation, you’ll find a folder named ch11 that contains the examples and exercises that we’ll be implementing in this chapter.

Later in this chapter, we’ll start implementing something in an actual LLVM backend. You can find all the necessary commits and details by looking at the GitHub log available at https://github.com/PacktPublishing/LLVM-Code-Generation-by-example, between the begin_ch11 and end_ch11 tags. Note that we call this repository the companion repository. The commits that have been referenced...