gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-7.c

   1 /* { dg-do link } */
   2 /* { dg-options "-O -fdump-tree-optimized" } */
   3
   4 extern void link_error (void);
   5 void foo(int n)
   6 {
   7   int * f = (int*) __builtin_malloc (n * sizeof (int));
   8   int * ff = (int*) __builtin_malloc (n * sizeof (int));
   9   int i;
  10
  11   for (i = 0; i < n; ++i)
  12     {
  13       f[i] = 1;
  14       ff[i] = 2;
  15       if (f[i] != 1)
  16         link_error ();
  17       if (ff[i] != 2)
  18         link_error ();
  19     }
  20
  21   __builtin_free (f);
  22   __builtin_free (ff);
  23 }
  24 int main()
  25 {
  26   return 0;
  27 }
  28
  29 /* We should have removed the calls to link_error () and all stores
  30    to the allocated memory.  */
  31
  32 /* { dg-final { scan-tree-dump-times "\\\*D" 0 "optimized" } } */