Problem Statement
-----------------

        1. For the code given below, do the following:
                a. Identify the type of dependence in S1 (RAW, WAR, WAW, 
                   loop carried/loop independent, dependence distance)
                b. compute the vectorization factor
                c. Speculate if the program can be 
                	i. vectorized
                	ii. parallelized
                
        2. Now vectorize and parallelize the code with gcc, and verify
           your observations. 
        
        3. The dependence distance from source  to sink is less than the
           vectorization factor.  Due to this, there  will be dependence
           amongst the  'VF' iterations we intend  to execute atomically
           during  vectorization.  Can   you  change  the  vectorization
           decision of GCC for this code
                a. by modifying the dependence distance
                b. without modifying the dependence distance
        

Test case
---------

        int a[356];
        int main ()
        {
                int i;
                for (i=0; i<204; i++) {
                    a[i] = a[i-3];  /* S1 */
                }
                return 0;
        }