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I know you can get a performance boost when compiling with a C++11 compiler instead of a C++03 compiler (see this question).
But can I expect a performance boost when going from a C++11 compiler to a C++14 compiler?
If so, can you show me a code sample that will be faster when compiled with C++14 instead of C++11.
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C++ C++ is one of the most efficient and fastest languages. It is widely used by competitive programmers for its execution speed and Standard Template Libraries(STL).
If the C++ compiler provides its own versions of the C headers, the versions of those headers used by the C compiler must be compatible. Oracle Developer Studio C and C++ compilers use compatible headers, and use the same C runtime library. They are fully compatible.
Performance-based on Nature Of Language C++ language is an object-oriented programming language, and it supports some important features like Polymorphism, Abstract Data Types, Encapsulation, etc. Since it supports object-orientation, speed is faster compared to the C language.
With 1 parallel copy, UnixBench compiled with Intel's is about 20% faster than the version compiled with GCC. However this hides huge differences. Dhrystone is about 25% slower with Intel compiler, while Whetstone runs 2x faster.
There is a core language change in C++14 that allows the implementation to merge memory allocations, see N3664. If your compiler/optimizer takes advantage of this allowance, you may see a performance improvement.
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