gcc/testsuite/gcc.dg/tree-ssa/20031106-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 extern void link_error (void);
   5
   6 /* Check for cprop on fields of the same struct.  */
   7
   8 struct s
   9 {
  10   char d;
  11   int a, b;
  12   double m;
  13 };
  14
  15
  16 void foo (struct s*  r)
  17 {
  18   r->a = 0;
  19   r->b = 1;
  20   r->a++;
  21   r->b++;
  22   if (r->a != 1)
  23     link_error ();
  24   if (r->b != 2)
  25     link_error ();
  26 }
  27
  28 /* There should be no link_error calls.  */
  29 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" } } */
  30 /* { dg-final { cleanup-tree-dump "optimized" } } */