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by aw1621107
2249 days ago
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> However, do you have any bench / source for std::unique_ptr ? You are the first one I hear giving critics on it. Chandler Carruth talks about this at CppCon 2019 [0]. From a quick review he says part of the reason std::unique_ptr isn't zero-cost right now is: - Objects passed by value (like std::unique_ptr) are passed on the stack instead of in registers, and changing that will be an ABI break - No destructive move means extra temporaries will be created/retained [0]: https://youtu.be/rHIkrotSwcc?t=1046 |
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