Компиляторы Intel. Возможности автоматической оптимизации

 
#include <ctime>
    #include <iostream>
        #include "stdlib.h"
        #include "conio.h"
        #include "math.h"
        
        using namespace std;
        const int SIZE = 1000;
        
        void matrixMultiply(double ** matrA, double ** matrB, double ** matrC, int matrSize);
        double sinCosMultiply(double i, double j);
        
        int main()
        {
        time_t t1, t2;
        double trace(0);
        double ** matrixA = new double*[SIZE];
        double ** matrixB = new double*[SIZE];
        cout << "We will construct the square matrix " << SIZE << "x" << SIZE << endl;
        cout << "of pseudo-random values" << endl;
        cout << "and multiply it by itself. Then we will find the trace of the matrix." << endl;
        for(int i = 0; i < SIZE; i++)
        {
        matrixA[i] = new double[SIZE];
        matrixB[i] = new double[SIZE];
        }
        t1 = clock();
        for(int i=0; i<SIZE; i++)
        {
        for(int j=0; j<SIZE; j++)
            {
            matrixA[i][j]=sinCosMultiply(rand()%10/3, rand()%10/3);
            }}
            matrixMultiply(matrixA, matrixA, matrixB, SIZE);
            for(int i=0; i<SIZE; i++)
            {
            for(int j=0; j<SIZE; j++)
                {
                     if(i==j) trace += matrixB[i][j];
                     }
                     }
                     t2 = clock();
                     cout << "\nTrace is " << trace << endl;
                     cout << "\nInitial clock ticks value is " << t1 << endl;
                     cout << "Final clock ticks value is " << t2 << endl;
                     cout << "Difference in clock ticks is " << difftime(t2,t1) << endl;
                     cout << "Clock ticks per second value is " << CLOCKS_PER_SEC << endl;
                     cout << "\nActual time of calculations is " << ((t2-t1)/CLOCKS_PER_SEC) << " sec" << endl;
                     for(int i = 0; i < SIZE; i++)
                     {
                     delete [] matrixA[i];
                     delete [] matrixB[i];
                     }
                     delete [] matrixA;
                     delete [] matrixB;
                     return 0;
                     }
                     void matrixMultiply(double ** matrA, double ** matrB, double ** matrC, int matrSize)
                     {
                     for(int i=0; i<matrSize; i++)
                     {
                     for(int j=0; j<matrSize; j++)
                         {
                         matrC[i][j] = 0;
                         for(int k=0; k<matrSize; k++)
                         {
                         matrC[i][j] += matrA[i][k]*matrB[k][j];
                         }
                     }
               }
           }
                         
     double sinCosMultiply(double i, double j)
       {
       return sin(i)*cos(j);
        }