Answer recommended by Intel
Related Contents:
- Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs
- Why is std::fill(0) slower than std::fill(1)?
- Why does C++ code for testing the Collatz conjecture run faster than hand-written assembly?
- Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
- How to remove “noise” from GCC/clang assembly output?
- Is there a reason why not to use link-time optimization (LTO)?
- Which is faster: x
- Is using double faster than float?
- Why do C++ optimizers have problems with these temporary variables or rather why `v[]` should be avoided in tight loops?
- How to get the CPU cycle count in x86_64 from C++?
- Why is pow(int, int) so slow?
- gcc optimization flag -O3 makes code slower than -O2
- Why doesn’t a compiler optimize floating-point *2 into an exponent increment?
- Is fastcall really faster?
- Fastest way to determine if an integer is between two integers (inclusive) with known sets of values
- What is &&& operation in C
- What is the effect of ordering if…else if statements by probability?
- Why does GCC generate such radically different assembly for nearly the same C code?
- How expensive is RTTI?
- while (1) Vs. for (;;) Is there a speed difference?
- What is the advantage of using forwarding references in range-based for loops?
- Is multiplication faster than float division? [duplicate]
- Which is more efficient: Return a value vs. Pass by reference?
- Ternary operator ?: vs if…else
- Why are Python Programs often slower than the Equivalent Program Written in C or C++?
- Fastest way to get a positive modulo in C/C++
- Why can’t GCC generate an optimal operator== for a struct of two int32s?
- Big difference (x9) in the execution time between almost identical code in C and C++
- What is the fastest way to change a key of an element inside std::map
- Compiler stops optimizing unused string away when adding characters
- What kind of optimization does const offer in C/C++?
- Why is the construction of std::optional more expensive than a std::pair?
- Difference between rdtscp, rdtsc : memory and cpuid / rdtsc?
- Why don’t compilers merge redundant std::atomic writes?
- What is the most efficient way to append one std::vector to the end of another?
- Why is this seemingly slower C loop actually twice as fast as the other way?
- Why do none of the major compilers optimize this conditional store that checks if the value is already set?
- Optimizing member variable order in C++
- Returning an empty string : efficient way in c++
- Inserting into a vector at the front
- How can the C++ Eigen library perform better than specialized vendor libraries?
- AVX2 what is the most efficient way to pack left based on a mask?
- Unexpected result when C++ store element into std::vector from return value of function
- Why is istream/ostream slow
- Is the `if` statement redundant before modulo and before assign operations?
- What is the modern, correct way to do type punning in C++?
- Porting 32 bit C++ code to 64 bit – is it worth it? Why?
- fastest way to negate a number
- “xor eax, ebp” being used in C++ compiler output
- Can I use memcpy in C++ to copy classes that have no pointers or virtual functions