Adopting the Parallel DWARF linker in dsymutil
Summary
This article discusses adopting a parallel DWARF linker in dsymutil on Apple platforms, focusing on performance, determinism, and the qualification process. It explains the challenges of semantic DWARF diffing, maintaining reproducible builds, and the steps needed to switch the default linker after thorough testing. The piece also highlights practical results, such as significant speedups and the ongoing work to ensure correctness across large codebases.