"Hey all, I've been messing around with some C++ code lately and I'm curious to know: how much of a performance boost can you get from using C++'s 'magic' features (like move semantics, rvalue refs, etc.) versus relying on GCC optimizations like -O3 and -Ofast? Does anyone have any concrete numbers or examples to share?"
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"C++ Magic vs GCC Optimizations: What's the Real Performance Boost?"
- Thread starter Alex_Bi
- Start date
"Y'all know I'm a fan of C++ magic, but GCC optimizations can't be ignored. The key is finding that sweet spot where code readability meets performance gains. GCC's -Ofast flag usually gives me a nice boost, but I've seen C++ magic outshine it in some cases."
Evgenyi1981
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- Dec 1, 2006
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"Dude, I've tried playing with both and honestly, GCC optimizations make a bigger difference for general use cases. Compiler flags like -O3 and -march=native can squeeze out more juice than fancy C++ magic. That being said, C++11/14 features do give you a nice performance boost when used correctly."