Interprocedural Optimization

Explore how to set up interprocedural optimization in your CMake project, verify compiler support, and ensure smooth builds using CMake's feature checks and test commands. Understand how to improve performance by enabling link-time optimizations and creating feature test files to catch potential compiler issues early.

We'll cover the following...

Checking for supported compiler features
- Try it yourself
Compiling a test file
- Try it yourself

Usually, compilers optimize the code on the level of a single translation unit, which means that our .cpp file will be preprocessed, compiled, and then optimized. Later, these files will be passed to the linker to build a single binary. Modern compilers can perform optimization after linking (this is called link time optimization) so that all compilation units can be optimized as a single module. If our compiler supports interprocedural optimizationCompiler techniques to improve performance in programs containing many frequently used functions by analyzing the entire program. Its purpose is to remove duplicate calculations, to limit inefficient use of memory, and to simplify iterative code., it may be a good idea to use it. We'll follow the same method as previously. The default variable for this setting is called CMAKE_INTERPROCEDURAL_OPTIMIZATION. But before we set it, we need to make sure it is supported to avoid errors:

1.Introduction to the Course

2.First Steps with CMake

3.The CMake Language

4.Setting Up Our First CMake Project

5.Working with Targets

6.Compiling C++ Sources with CMake

7.Linking with CMake

Assessment

8.Managing Dependencies with CMake

9.Testing Frameworks

10.Program Analysis Tools

11.Generating Documentation

12.Installing and Packaging

13.Creating Our Professional Project

14.Conclusion

15.Appendix

Interprocedural Optimization

Checking for supported compiler features