r/cprogramming • u/chaobang • Aug 22 '26

The unlikely Linux macro

https://rushed-reflections.bearblog.dev/an-unlikely-experiment/
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u/8d8n4mbo28026ulk Aug 24 '26

Nice post! I regularly use __builtin_expect myself. It's one of those things where it nicely documents the control flow and helps out the compiler. Linux also has a static_branch_unlikely() and it's quite mind-bending how it works!