gcc/testsuite/gcc.dg/tree-ssa/tailcall-8-run.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-additional-sources "tailcall-8.c" } */
   4
   5 struct s { int x; };
   6
   7 int expected;
   8 struct s *last_ptr;
   9 struct s tmp;
  10
  11 void
  12 start (int val, struct s *initial_last_ptr)
  13 {
  14   expected = val;
  15   tmp.x = val;
  16   last_ptr = initial_last_ptr;
  17 }
  18
  19 void
  20 f_direct (struct s param)
  21 {
  22   if (param.x != expected)
  23     __builtin_abort ();
  24 }
  25
  26 void
  27 f_indirect (struct s *ptr)
  28 {
  29   if (ptr->x != expected)
  30     __builtin_abort ();
  31   last_ptr = ptr;
  32   ptr->x += 100;
  33 }
  34
  35 void
  36 f_void (void)
  37 {
  38   if (last_ptr->x != expected + 100)
  39     __builtin_abort ();
  40 }
  41
  42
  43 void g1 (struct s);
  44 void g2 (struct s *);
  45 void g3 (struct s *);
  46 void g4 (struct s *);
  47 void g5 (struct s);
  48 void g6 (struct s);
  49 void g7 (struct s);
  50 void g8 (struct s *);
  51 void g9 (struct s *);
  52
  53 int
  54 main (void)
  55 {
  56   struct s g6_s = { 106 };
  57
  58   start (1, 0);
  59   g1 (tmp);
  60
  61   start (2, 0);
  62   g2 (&tmp);
  63
  64   start (3, 0);
  65   g3 (&tmp);
  66
  67   start (4, 0);
  68   g4 (&tmp);
  69
  70   start (5, 0);
  71   g5 (tmp);
  72
  73   start (6, &g6_s);
  74   g6 (tmp);
  75
  76   start (7, 0);
  77   g7 (tmp);
  78
  79   start (8, 0);
  80   g8 (&tmp);
  81
  82   start (9, 0);
  83   g9 (&tmp);
  84
  85   return 0;
  86 }