View difference between Paste ID: 7iawqUSx and cVZAPAzw

 #include <iostream>
 #include <random>
 #include <cstdint>
 #include <Windows.h>
 #include <vector>
 
 //======================================================
 //Дабы избежать оптимизаций компилятора
 
 uint64_t gGlobalVar = 0;
 
 DECLSPEC_NOINLINE void Inc5()
 {
 	gGlobalVar += 5;
 }
 
 DECLSPEC_NOINLINE void Inc7()
 {
 	gGlobalVar += 7;
 }
 
 //======================================================
 
 std::vector<uint8_t> GenRandomVec(size_t size)
 {
 	std::random_device rd;
 	std::mt19937_64 mt(rd());
 
 	std::vector<uint8_t> constVec(size);
 	std::uniform_int_distribution<int> distrib;
 	for (uint64_t i = 0; i < constVec.size(); i++)
 	{
 		constVec[i] = distrib(mt) & 0xff;
 	}
 
 	return std::move(constVec);
 }
 
 //======================================================
 
 double BranchedTime(int64_t timeFreq, uint8_t threshold, const std::vector<uint8_t>& randomConditions)
 {
 	int64_t start, end;
 
 	QueryPerformanceCounter((LARGE_INTEGER*)(&start));
 	for (uint64_t i = 0; i < randomConditions.size(); i++)
 	{
 		if (randomConditions[i] > threshold)
 		{
 			Inc5();
 		}
 		else
 		{
 			Inc7();
 		}
 	}
 	QueryPerformanceCounter((LARGE_INTEGER*)(&end));
 
 	return (double)(end - start) / timeFreq;
 }
 
 double UnbranchedTime(int64_t timeFreq, uint8_t threshold, const std::vector<uint8_t>& randomConditions)
 {
 	int64_t start, end;
 
 	void(*Incs[2])() = { Inc7, Inc5 };
 
 	QueryPerformanceCounter((LARGE_INTEGER*)(&start));
 	for (uint64_t i = 0; i < randomConditions.size(); i++)
 	{
 		Incs[randomConditions[i] > threshold]();
 	}
 	QueryPerformanceCounter((LARGE_INTEGER*)(&end));
 
 	return (double)(end - start) / timeFreq;
 }
 
 //======================================================
 
 int main()
 {
 	uint8_t threshold = 127;
 	std::vector<uint8_t> cVec = std::move(GenRandomVec(1000000000)); //1 billion
 
 	int64_t freq;
 	QueryPerformanceFrequency((LARGE_INTEGER*)(&freq));
 
 	double bTime = BranchedTime(freq, threshold, cVec);
 	double uTime = UnbranchedTime(freq, threshold, cVec);
 
 	std::cout << "Branched   time = " << bTime << std::endl
 		      << "Unbranched time = " << uTime << std::endl;
 
 	std::cin.get();
 	return 0;
 }