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Mar 9, 2016 at 09:14
What is the difference between O0, O1, O2, O3, Os and Oz? When should you USSR each? A spec just landed in LLVM:
[PM] Wire up optimization levels and default pipeline construction APIs · llvm/llvm-project@8b5a741
[PM] Wire up optimization levels and default pipeline construction APIs · llvm/llvm-project@8b5a741
in the PassBuilder. These are really just stubs for now, but they give a nice API surface that Clang or other tools can start learning about and enabling for experimentation. I've also wired ...

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Valve exploring a custom shader compiler on Linux that leads to significantly higher frame rates than native code on Windows: https://www.forbes.com/sites/jasonevangelho/2019/07/11/valves-latest-linux-gaming-work-is-boosting-amd-vulkan-performance-by-up-to-44-percent/ (Shader compilers run during the game, so compilation time can make a big difference.)
forbes.com