gcc/testsuite/gcc.dg/tree-ssa/scev-12.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-ivopts-details" } */
   3
   4 int a[128];
   5 extern int b[];
   6
   7 int bar (int *);
   8
   9 int
  10 foo (int x, int n)
  11 {
  12   int i;
  13
  14   for (i = 0; i < n; i++)
  15     {
  16       unsigned char uc = (unsigned char)i;
  17       if (x)
  18         a[i] = i;
  19       b[uc] = 0;
  20     }
  21
  22   bar (a);
  23   return 0;
  24 }
  25
  26 /* Address of array reference to b is not scev.  */
  27 /* { dg-final { scan-tree-dump-times "  Type:\\tADDRESS\n  Use \[0-9\].\[0-9\]:" 1 "ivopts" } } */