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c++ Programming Glossary: optimizeWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array predict So what can be done If the compiler isn't able to optimize the branch into a conditional move you can try some hacks if..
http://stackoverflow.com/questions/136880/sell-me-on-const-correctness accidental variable assignments and The compiler can optimize it. For instance you are protected from if x y whoops meant..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code The following particular aspects are of high importance to optimize caching Temporal locality when a given memory location was accessed..
Swapping two variable value without using 3rd variable http://stackoverflow.com/questions/1826159/swapping-two-variable-value-without-using-3rd-variable Should this be used In general cases no. The compiler will optimize away the temporary variable and given that swapping is a common..
Static linking vs dynamic linking http://stackoverflow.com/questions/1993390/static-linking-vs-dynamic-linking if using a profiling compiler that uses profile data to optimize program hotpaths because with static linking the compiler can.. hotpaths because with static linking the compiler can optimize both your code and the library code. With dynamic linking only.. library code. With dynamic linking only your code can be optimized. If most of the time is spent running library code this can..
Constants and compiler optimization in C++ http://stackoverflow.com/questions/212237/constants-and-compiler-optimization-in-c it is important in part because it helps the compiler to optimize your code. What I've never seen is a good explanation on how.. explanation on how the compiler uses this information to optimize the code not even the good books go on explaining what happens.. behind the curtains. For example how does the compiler optimize a method that is declared const vs one that isn't but should..
http://stackoverflow.com/questions/244316/reader-writer-locks-in-c writer and many frequent readers and would like to optimize for this. Preferable I would like a cross platform solution..
Is there a performance difference between i++ and ++i in C++? http://stackoverflow.com/questions/24901/is-there-a-performance-difference-between-i-and-i-in-c called for i Foo tmp this variable tmp cannot be optimized away by the compiler this return tmp Since the compiler isn't.. but just calling an operator function there is no way to optimize away the tmp variable and its associated copy constructor. If..
Finding C++ static initialization order problems http://stackoverflow.com/questions/335369/finding-c-static-initialization-order-problems DO NOT use the double checked locking pattern to try an optimize away the locking. This will not work in C Creation Problems..
Why does C++ not have reflection? http://stackoverflow.com/questions/359237/why-does-c-not-have-reflection aren't required to actually be there . The compiler can optimize them away inline everything they do and it frequently does just.. of instantiating and destructing the object can be optimized away. operator on a vector is only comparable to raw array..
Optimizing away a “while(1);” in C++0x http://stackoverflow.com/questions/3592557/optimizing-away-a-while1-in-c0x below endless goto endless A compiler is not allowed to optimize that away it seems because it's not a loop but a jump. Another..
What techniques can be used to speed up C++ compilation times? http://stackoverflow.com/questions/373142/what-techniques-can-be-used-to-speed-up-c-compilation-times a Lower Optimization Level The more the compiler tries to optimize the harder it has to work. Shared Libraries Moving your less..
http://stackoverflow.com/questions/4421706/operator-overloading over postfix increment. While compilers can usually optimize away the additional work of postfix increment for built in types..
How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array? http://stackoverflow.com/questions/6114067/how-to-emulate-c-array-initialization-int-arr-e1-e2-e3-behaviou . In practice I would expect any C compiler to be able to optimize that such that it's as fast as direct initialization. share..
How do I expand a tuple into variadic template function's arguments? http://stackoverflow.com/questions/687490/how-do-i-expand-a-tuple-into-variadic-template-functions-arguments ... calls 0 which is the last one and the compiler will optimize away the various intermediate function calls to only keep the..
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