gomp-20050608-branch/gcc/testsuite/gcc.dg/tree-ssa/ltrans-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-loop-linear -fdump-tree-ltrans-all" } */
   3
   4 double u[1782225];
   5 int foo(int N, int *res)
   6 {
   7   unsigned int i, j;
   8   double sum = 0;
   9
  10   /* This loop should be converted to a perfect nest and
  11      interchanged.  */
  12   for (i = 0; i < N; i++)
  13     {
  14       for (j = 0; j < N; j++)
  15         {
  16           sum = sum + u[i + 1335 * j];
  17           if (j == N - 1)
  18             u[1336 * i] *= 2;
  19         }
  20     }
  21   *res = sum + N;
  22 }
  23 /* { dg-final { scan-tree-dump-times "transformed loop" 1 "ltrans"} {
  24    xfail *-*-*} } */
  25 /* { dg-final { cleanup-tree-dump "ltrans" } } */