gcc/testsuite/gcc.dg/graphite/block-1.c

   1 /* { dg-options "-O2 -floop-block -fdump-tree-graphite-all" } */
   2
   3 #define MAX 8192
   4
   5 int main()
   6 {
   7   int i, j;
   8   int sum = 0;
   9   int A[MAX * MAX];
  10   int B[MAX * MAX];
  11
  12   for (i = 0; i < MAX; i++)
  13     for (j = 0; j < MAX; j++)
  14       {
  15         A[i*MAX + j] = j;
  16         B[i*MAX + j] = j;
  17       }
  18
  19   for (i = 0; i < MAX; i++)
  20     for (j = 0; j < MAX; j++)
  21       A[i*MAX + j] += B[j*MAX + i];
  22
  23   for(i = 0; i < MAX; i++)
  24     for(j = 0; j < MAX; j++)
  25       sum += A[i*MAX + j];
  26
  27   return sum;
  28 }
  29
  30 /* { dg-final { scan-tree-dump-times "Loop blocked" 3 "graphite"} } */
  31 /* { dg-final { cleanup-tree-dump "graphite" } } */