gcc/testsuite/gcc.dg/tree-ssa/20041110-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-loop-linear" } */
   3
   4 /* This testcase was causing an ICE in building distance vectors because
   5    we weren't ignoring the fact that one of the induction variables
   6    involved in the dependence was outside of the loop.  */
   7 extern int foo (int, int);
   8 int
   9 main (void)
  10 {
  11   int a[50];
  12   int b[50];
  13   int i, j, k;
  14   for (i = 4; i < 30; i++)
  15     {
  16       for (j = 3; j < 40; j++)
  17         {
  18           for (k = 9; k < 50; k++)
  19             {
  20               b[j] = a[i];
  21               a[k] = b[i];
  22             }
  23         }
  24     }
  25   foo (a[i], b[i]);
  26 }