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Learn LLVM 17

You're reading from   Learn LLVM 17 A beginner's guide to learning LLVM compiler tools and core libraries with C++

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Product type Paperback
Published in Jan 2024
Publisher Packt
ISBN-13 9781837631346
Length 416 pages
Edition 2nd Edition
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Authors (2):
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Kai Nacke Kai Nacke
Author Profile Icon Kai Nacke
Kai Nacke
Amy Kwan Amy Kwan
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Amy Kwan
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Toc

Table of Contents (20) Chapters Close

Preface 1. Part 1: The Basics of Compiler Construction with LLVM
2. Chapter 1: Installing LLVM FREE CHAPTER 3. Chapter 2: The Structure of a Compiler 4. Part 2: From Source to Machine Code Generation
5. Chapter 3: Turning the Source File into an Abstract Syntax Tree 6. Chapter 4: Basics of IR Code Generation 7. Chapter 5: IR Generation for High-Level Language Constructs 8. Chapter 6: Advanced IR Generation 9. Chapter 7: Optimizing IR 10. Part 3: Taking LLVM to the Next Level
11. Chapter 8: The TableGen Language 12. Chapter 9: JIT Compilation 13. Chapter 10: Debugging Using LLVM Tools 14. Part 4: Roll Your Own Backend
15. Chapter 11: The Target Description 16. Chapter 12: Instruction Selection 17. Chapter 13: Beyond Instruction Selection 18. Index 19. Other Books You May Enjoy

Instruction Selection

The heart of any backend is instruction selection. LLVM implements several approaches; in this chapter, we will implement instruction selection via the selection directed acyclic graph (DAG) and with global instruction selection.

In this chapter, you will learn about the following topics:

  • Defining the rules of the calling convention: This section shows you how to describe the rules of a calling convention in the target description
  • Instruction selection via the selection DAG: This section teaches you how to implement instruction selection with a graph data structure
  • Adding register and instruction information: This section explains how to access information in the target description, and what additional information you need to provide
  • Putting an empty frame lowering in place: This section introduces you to the stack layout and the prologue of a function
  • Emitting machine instructions: This section tells you how machine instructions are...
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