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並前往https://stackoverflow.com/questions/109710/how-do-the-likely-unlikely-macros-in-the-linux-kernel-work-and-what-is-their-ben

How do the likely/unlikely macros in the Linux kernel work and ...

gcc -c -O3 -std=gnu11 main.c objdump -dr main.o ... C++20 [[likely]] and [[unlikely]] ... if (unlikely(x)) { dosomething(); } return x;.

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