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by int_19h
208 days ago
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`inline` in C has very little to do with inlining these days. You most certainly don't need to actually use it to have functions in the same translation units inlined, and LTO will inline across units as well. The heuristics for either generally don't care if the function is marked as `inline` or not, only how complex it is. If you actually want to reliably control inlining, you use stuff like `__forceinline` or `[[gnu:always_inline]]`. Regarding code size, it's not just that binary becomes larger, it's that overly aggressive inlining can actually have a detrimental effect on performance for a number of reasons. |
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