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Clang Compiler Frontend

You're reading from   Clang Compiler Frontend Get to grips with the internals of a C/C++ compiler frontend and create your own tools

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Product type Paperback
Published in Mar 2024
Publisher Packt
ISBN-13 9781837630981
Length 326 pages
Edition 1st Edition
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Author (1):
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Ivan Murashko Ivan Murashko
Author Profile Icon Ivan Murashko
Ivan Murashko
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Table of Contents (17) Chapters Close

Preface 1. Part I: Clang Setup and Architecture
2. Chapter 1: Environment Setup FREE CHAPTER 3. Chapter 2: Clang Architecture 4. Chapter 3: Clang AST 5. Chapter 4: Basic Libraries and Tools 6. Part II: Clang Tools
7. Chapter 5: Clang-Tidy Linter Framework 8. Chapter 6: Advanced Code Analysis 9. Chapter 7: Refactoring Tools 10. Chapter 8: IDE Support and Clangd 11. Part III: Appendix
12. Bibliography
13. Index 14. Other Books You Might Enjoy Appendix 1: Compilation Database 1. Appendix 2: Build Speed Optimization

2.4 Clang frontend overview

It’s evident that the Clang compiler toolchain conforms to the pattern widely described in various compiler books [118]. However, Clang’s frontend part diverges significantly from a typical compiler frontend. The primary reason for this distinction is the complexity of the C++ language. Some features, such as macros, can modify the source code itself, while others, such as typedef, can influence the kind of token. Clang can also generate output in a variety of formats. For instance, the following command generates an aesthetically pleasing HTML view of the program shown in Figure 2.5:

$ <...>/llvm-project/install/bin/clang -cc1 -emit-html max.cpp

Take note that we pass the argument to emit the HTML form of the source program to the Clang frontend, specified with the -cc1 option. Alternatively, you can pass an option to the frontend via the -Xclang option, which requires an additional argument representing...

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