Technical requirements

In this section, we are also going to use LLVM Pass as the platform to show different API usages. Therefore, please make sure you have built the opt command-line tool, as follows:

$ ninja opt

Note that some of the content in this chapter only works with a debug build version of LLVM. Please check the first chapter, Chapter 1, Saving Resources When Building LLVM, for a recap on how to build LLVM in debug mode.

You can also go back to Chapter 9, Working with PassManager and AnalysisManager, if you are not sure how to create a new LLVM Pass.

The sample code for this chapter can be found here:

https://github.com/PacktPublishing/LLVM-Techniques-Tips-and-Best-Practices-Clang-and-Middle-End-Libraries/tree/main/Chapter11