gcc/testsuite/gcc.dg/tree-ssa/20031106-2.c

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