Going Faster by Duplicating Code

Re:Going Faster by Duplicating Code by logdahl on Wednesday October 11, 2023 @11:07AM (#37845401)

I kind of wish we had a form of preconditions/hints for the C compiler. There are lots of attributes, but those all look weird. Imagine annotating a calculation that 1 is a common value for example. or that a function is never called with a null-pointer.

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Re:Going Faster by Duplicating Code by variadix on Wednesday October 11, 2023 @01:19PM (#37847359)

With GCC/clang you can write an ASSERT/ASSUME macro that does this. Basically: if (!cond) __builtin_unreachable();

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