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c++ Programming Glossary: optimizingMeaning of acronym SSO in the context of std::string http://stackoverflow.com/questions/10315041/meaning-of-acronym-sso-in-the-context-of-stdstring style several answers referred to SSO in the context of optimizing copies of std string . What does SSO mean in that context Clearly..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code efforts in CPUs therefore currently focus heavily on optimizing caches prefetching pipelines and concurrency. For instance modern..
When should I write the keyword 'inline' for a function/method? http://stackoverflow.com/questions/1759300/when-should-i-write-the-keyword-inline-for-a-function-method Not to mention humans are usually wrong when it comes to optimizing code so most compilers flat out ignore the 'hint'. static the.. it gives the compiler more information to work with while optimizing your code. It also increases compilation time. When should I..
Can a recursive function be inline? http://stackoverflow.com/questions/190232/can-a-recursive-function-be-inline on the level to which it will unroll the function. An optimizing compiler might turn this code inline int factorial int n if..
Constants and compiler optimization in C++ http://stackoverflow.com/questions/212237/constants-and-compiler-optimization-in-c
How do you declare an interface in C++? http://stackoverflow.com/questions/318064/how-do-you-declare-an-interface-in-c destructor it turns out some compilers have trouble optimizing an empty destructor and you're better off using the default...
Why does C++ not have reflection? http://stackoverflow.com/questions/359237/why-does-c-not-have-reflection the addition of metadata may inhibit the compiler from optimizing. Why should I pay that cost in my code if I may never need that..
What kinds of optimizations does 'volatile' prevent in C++? http://stackoverflow.com/questions/3604569/what-kinds-of-optimizations-does-volatile-prevent-in-c got was pretty much It's used to prevent the compiler from optimizing away code. There were some examples such as when polling memory.. from caching the value in a CPU register and from optimizing away accesses to that value when they seem unnecessary from..
Why can't I have a non-integral static const member in a class? http://stackoverflow.com/questions/370283/why-cant-i-have-a-non-integral-static-const-member-in-a-class this will not hurt performance since you're not optimizing anyways but with optimizations enabled this can hurt performance..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux in Linux I have a C application I'm in the process of optimizing. What tool can I use to pinpoint my slow code c unix profiling..
http://stackoverflow.com/questions/408670/stack-static-and-heap-in-c memory well it will save you time which you can spend optimizing other code. There really isn't much of a performance penalty..
Why do we use volatile keyword in C++? [duplicate] http://stackoverflow.com/questions/4437527/why-do-we-use-volatile-keyword-in-c desired result you need to somehow stop the compiler from optimizing the while loop. That is where the volatile keyword plays it's.. Okay Well that is how volatile prevents compiler from optimizing code. Now google it to see some sample examples. Quoting from..
When to use volatile with multi threading? http://stackoverflow.com/questions/4557979/when-to-use-volatile-with-multi-threading operations on volatile variables. From the MSDN When optimizing the compiler must maintain ordering among references to volatile..
Why would anybody use C over C++? [closed] http://stackoverflow.com/questions/497786/why-would-anybody-use-c-over-c other low level code You know the C compiler isn't good at optimizing the kind of code you need to write Your app not only doesn't..
Is C# really slower than say C++? http://stackoverflow.com/questions/5326269/is-c-sharp-really-slower-than-say-c want to it's usually pretty easy to trigger it. Second optimizing code like most other optimization problems is largely an NP..
Checking if a double (or float) is nan in C++ http://stackoverflow.com/questions/570669/checking-if-a-double-or-float-is-nan-in-c below have pointed out not all compilers respect this when optimizing code. For any compiler which claims to use IEEE floating point..
Should we still be optimizing “in the small”? http://stackoverflow.com/questions/763656/should-we-still-be-optimizing-in-the-small we still be optimizing &ldquo in the small&rdquo I was changing my for loop to increment..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python of the code will become the bottleneck so I don't think optimizing to that level would even be worthwhile even if possible since..
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513? http://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of this question The explanation comes from Agner Fog in Optimizing software in C and it reduces to how data is accessed and stored..
Optimizing very often used anagram function http://stackoverflow.com/questions/18123959/optimizing-very-often-used-anagram-function very often used anagram function I have written a function..
Optimizing a CUDA kernel with irregular memory accesses http://stackoverflow.com/questions/20512257/optimizing-a-cuda-kernel-with-irregular-memory-accesses a CUDA kernel with irregular memory accesses I have the following..
Why destructor is not called on exception? http://stackoverflow.com/questions/222175/why-destructor-is-not-called-on-exception A ~A is called. I am compiling with Microsoft R 32 bit C C Optimizing Compiler Version 14.00.50727.762 for 80x86 from Visual Studio..
Weird compile error dealing with Winnt.h http://stackoverflow.com/questions/257134/weird-compile-error-dealing-with-winnt-h for what's going on My compiler Microsoft R 32 bit C C Optimizing Compiler Version 15.00.21022.08 for 80x86 Copyright C Microsoft..
Optimizing away a “while(1);” in C++0x http://stackoverflow.com/questions/3592557/optimizing-away-a-while1-in-c0x away a &ldquo while 1 &rdquo in C 0x Updated see below I have..
http://stackoverflow.com/questions/3632160/how-to-make-a-php-extension for the web isn't like application development. Optimizing bits of your code by writing them in faster languages analogous..
Dealing with M occurrences among N http://stackoverflow.com/questions/3963409/dealing-with-m-occurrences-among-n 3 3 3 0 So only bit 1 is set which means the result is 2. Optimizing implementation Tricks and considerations that are also useful..
Difference in initializing and zeroing an array in c/c++? http://stackoverflow.com/questions/453432/difference-in-initializing-and-zeroing-an-array-in-c-c The second does a memset explicitly over the whole array. Optimizing compilers will usually replace a memset for smaller regions..
Strange assembly from array 0-initialization http://stackoverflow.com/questions/531477/strange-assembly-from-array-0-initialization Mobile Professional ARM processor from the Microsoft Optimizing Compiler . What I found was somewhat surprising and I wonder..
Optimizing subset sum implementation http://stackoverflow.com/questions/6236684/optimizing-subset-sum-implementation subset sum implementation I'm working on a solution to a variant..
How to Detect if I'm Compiling Code With Visual Studio 2008? http://stackoverflow.com/questions/70013/how-to-detect-if-im-compiling-code-with-visual-studio-2008 x86 microsoft visual studio 11.0 vc bin cl Microsoft R C C Optimizing Compiler Version 17.00.50727.1 for x86 ..... share improve..
How to improve fixed point square-root for small values http://stackoverflow.com/questions/8721022/how-to-improve-fixed-point-square-root-for-small-values fixed point library described in the Dr Dobb's article Optimizing Math Intensive Applications with Fixed Point Arithmetic to calculate..
How to add qi::symbols in grammar<Iterator,double()>? http://stackoverflow.com/questions/8780604/how-to-add-qisymbols-in-grammariterator-double Files x86 boost boost_1_47 test.cpp Microsoft R 32 bit C C Optimizing Compiler Version 16.00.30319.01 for 80x86 Copyright C Microsoft..
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