What Happens If We Inline Everything?

Exploring the effect of inlining all functions in a compiler, the post discusses the benefits and drawbacks of inlining as an optimization method. Despite concerns about code duplication and increased compile times due to increased register pressure, the experimentation shows that runtime performance does not degrade significantly when inlining all functions. However, this approach leads to substantial increases in compilation time and executable size, suggesting careful consideration should be given when using the always_inline attribute.