gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-82.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O -fdump-tree-fre1-details" } */
   3
   4 struct S { _Bool x; };
   5
   6 void
   7 foo (struct S *s)
   8 {
   9   __builtin_memset (s, 1, sizeof (struct S));
  10   s->x = 1;
  11 }
  12
  13 int
  14 main ()
  15 {
  16   struct S s;
  17   foo (&s);
  18   char c;
  19   __builtin_memcpy (&c, &s.x, 1);
  20   if (c != 1)
  21     __builtin_abort ();
  22   return 0;
  23 }
  24
  25 /* { dg-final { scan-tree-dump "Deleted redundant store" "fre1" } } */