[llvm-dev] Unable to vectorize stream_cluster distance code

[hameeza ahmed via llvm-dev]

Hello,

i am unable to vectorize the stream cluster distance code through llvm. the
code is as follows:



typedef struct {
  float weight;
  float *coord;
  long assign;  /* number of point where this one is assigned */
  float cost;  /* cost of that assignment, weight*distance */
} Point;

int main()
{

clock_t begin, end; double time_spent;

  float coordr[100000], coordri[100000];

for (int j=0;j<100000;j++)
{coordr[j]=j+1;
coordri[j]=2*j+1;
}
Point p1, p2;
p1.weight=2.0;
p1.coord=coordr;
p1.assign=5.0;
p1.cost=10.0;

p2.weight=5.0;
p2.coord=coordri;
p2.assign=8.0;
p2.cost=20.0;


int dim=100000;
int i;
  float result=0.0;
 begin = clock();
  for (i=0;i<dim;i++)
   result += (p1.coord[i] - p2.coord[i])*(p1.coord[i] - p2.coord[i]);


end = clock();
time_spent = (double)(end - begin) / CLOCKS_PER_SEC;

printf("time spent in daxpy is %f \n", time_spent);
  return 0;
}


Is this llvm bug? or what is my mistake?

please help.

Thank You
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