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c++ Programming Glossary: elideIs it possible to std::move objects out of functions? (C++11) http://stackoverflow.com/questions/13618506/is-it-possible-to-stdmove-objects-out-of-functions-c11 copy or move constructor the compiler may choose to elide the copy. This is the so called named return value optimization..
Performance degradation due to default initialisation of elements in standard containers http://stackoverflow.com/questions/15952412/performance-degradation-due-to-default-initialisation-of-elements-in-standard-co 0.435393 sec The speed up actually possible if one could elide the default construction of elements can be estimated by the..
Implementing B=f(A), with B and A arrays and B already defined http://stackoverflow.com/questions/16254797/implementing-b-fa-with-b-and-a-arrays-and-b-already-defined a limitation since many compilers would be able to elide the extra temporaries. Opposite to this a syntax like f A B..
http://stackoverflow.com/questions/1932222/c-vector-vs-array-time the optimizer to do things like inline function calls and elide temporaries. Lack of this optimization causes an especially..
Constant value in conditional expression http://stackoverflow.com/questions/224421/constant-value-in-conditional-expression can simply use a conditional and trust the compiler to elide the dead code when CONFIG_FOO isn't defined if foo_enabled .....
template pass by value or const reference or…? http://stackoverflow.com/questions/4876913/template-pass-by-value-or-const-reference-or then you should take it by value to help the compiler elide copies that don't really need to be made. Otherwise take the..
http://stackoverflow.com/questions/587070/c-constructor-syntax with the same type the compiler is allowed to elide a copy so it can construct the temporary you create directly.. generated. But the copy constructor even if the copy is elided optimized out must still be available. I.e if you have a private.. destructors of your class and using the option fno elide constructors for GCC. It does not try to elide copies then...
How to allow copy elision construction for C++ classes (not just POD C structs) http://stackoverflow.com/questions/5877726/how-to-allow-copy-elision-construction-for-c-classes-not-just-pod-c-structs omitted copy move Unfortunately this seems that we can't elide copies and moves of function parameters to function results.. when passed by value . It seems the only way to elide all copies when creating a composite object is to create it.. My answer This construct allows for copies to be elided for non POD types. I got this idea from David RodrÃguez's answer..
http://stackoverflow.com/questions/5999522/c-default-constructor argument this of course assumes that the compiler doesn't elide copies it depends on your compiler's optimization settings ...
Why is copy constructor not being called in this code http://stackoverflow.com/questions/7779827/why-is-copy-constructor-not-being-called-in-this-code by the compiler. If you're using GCC then use fno elide constructors option to avoid it. GCC 4.6.1 manual says fno elide.. constructors option to avoid it. GCC 4.6.1 manual says fno elide constructors The C standard allows an implementation to omit..
Understanding eliding rules with regard to c++11 http://stackoverflow.com/questions/9267687/understanding-eliding-rules-with-regard-to-c11 want to make sure I understand the when a copy should be elided and when it should follow move semantics. Given the following.. NVCRA ret 5 ... return ret int main This call will be elided allays and invoke the single param constructor NVCRA A GetATemp.. This call will be a traditional copy the complier may elide this if so the work will be done inline NVCRA B GetACopy In..
How to disable return value optimization in Visual Studio 2010? http://stackoverflow.com/questions/9941043/how-to-disable-return-value-optimization-in-visual-studio-2010 all optimizations doesn't help. In g there exists flag fno elide constructors which disables RVO. Thnx. c visual studio visual..
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