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c++ Programming Glossary: oxWhy 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 to generate conditional moves for this branch even under Ox . Intel Compiler 11 does something miraculous. It interchanges..
Creating an object in the loop http://stackoverflow.com/questions/3009489/creating-an-object-in-the-loop . EDIT I used VC 2005 release mode with full optimization Ox on Windows XP c optimization share improve this question..
Which, if any, C++ compilers do tail-recursion optimization? http://stackoverflow.com/questions/34125/which-if-any-c-compilers-do-tail-recursion-optimization do I go about telling the compiler to do it For MSVC O2 or Ox For GCC O2 or O3 How about checking if the compiler has done.. for speed. But you do that anyway right For MSVC use O2 or Ox. For GCC use O3 The easiest way to check if the compiler did..
http://stackoverflow.com/questions/4340396/does-the-c-standard-mandate-poor-performance-for-iostreams-or-am-i-just-deali 11.4 ms char 3.7 ms On my laptop Visual C 2010 x86 cl Ox EHsc Windows 7 Ultimate 64 bit Intel Core i7 8 GB RAM ostringstream.. ms Visual C 2010 x86 with Profile Guided Optimization cl Ox EHsc GL c link ltcg pgi run link ltcg pgo measure ostringstream.. ms char 3.57 ms 3.75 ms Same laptop Visual C 2008 SP1 cl Ox EHsc ostringstream 88.7 ms 87.6 ms stringbuf 23.3 ms 23.4 ms..
What is the difference between the /Ox and /O2 compiler options? http://stackoverflow.com/questions/5063334/what-is-the-difference-between-the-ox-and-o2-compiler-options is the difference between the Ox and O2 compiler options Microsoft's C compiler cl.exe as included.. is between O2 which optimizes code for maximum speed and Ox which selects full optimization . I've tried reading the documentation.. . I've tried reading the documentation for the Ox option and it seems to confirm that this switch also enables..
When can the compiler statically bind a call to a virtual function? http://stackoverflow.com/questions/7291596/when-can-the-compiler-statically-bind-a-call-to-a-virtual-function even for the following sequence for clarity I'm using the Ox optimization option A a A ar a ar.f So there's no need for a..
Benchmark C++ vs Java, Unrealistic results http://stackoverflow.com/questions/7570484/benchmark-c-vs-java-unrealistic-results MSVC 16.00.40219.01 for x64 2010 SP1 command line cl Ox masoud.cpp masoud 1000000000 499999999500000000 Delta 229.684364..
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