gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-92.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-fre1" } */
   3
   4 extern void foo(void);
   5 int a, c, *f, **d = &f;
   6 char b;
   7 int main()
   8 {
   9   if (a) {
  10     b = 0;
  11     int *g = &c;
  12     *g = 0;
  13     f = *d;
  14     *d = f;
  15     if ((2 ^ b) == 0)
  16       foo();
  17   }
  18   return 0;
  19 }
  20
  21 /* { dg-final { scan-tree-dump-not "foo" "fre1" } } */