gcc/testsuite/gcc.dg/tree-ssa/tailcall-7-run.c

   1 /* { dg-do run { target trampolines } } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-additional-sources "tailcall-7.c" } */
   4
   5 struct s { int x; };
   6 extern struct s global;
   7
   8 void g1 (void);
   9 void g2 (void);
  10 void g3 (struct s *);
  11 struct s g4 (struct s);
  12 struct s g5 (void);
  13 struct s g6 (void);
  14 struct s g7 (void);
  15 struct s g8 (struct s *);
  16 int g9 (struct s);
  17 int g10 (int);
  18
  19 struct s last;
  20 struct s tmp;
  21
  22 struct s
  23 f (int i)
  24 {
  25   struct s ret;
  26   ret.x = i + 100;
  27   last = ret;
  28   return ret;
  29 }
  30
  31 void
  32 callit (void (*fn) (void))
  33 {
  34   fn ();
  35 }
  36
  37 int
  38 test (int last_val, int global_val, int tmp_val)
  39 {
  40   return last.x == last_val && global.x == global_val && tmp.x == tmp_val;
  41 }
  42
  43 int
  44 main (void)
  45 {
  46   global.x = 200;
  47   tmp.x = 300;
  48   g1 ();
  49   if (!test (101, 200, 300))
  50     __builtin_abort ();
  51   g2 ();
  52   if (!test (102, 102, 300))
  53     __builtin_abort ();
  54   g3 (&tmp);
  55   if (!test (103, 102, 103))
  56     __builtin_abort ();
  57   if (g4 (tmp).x != 104 || !test (104, 102, 103))
  58     __builtin_abort ();
  59   if (g5 ().x != 105 || !test (105, 102, 103))
  60     __builtin_abort ();
  61   if (g6 ().x != 106 || !test (106, 102, 103))
  62     __builtin_abort ();
  63   if (g7 ().x != 107 || !test (107, 107, 103))
  64     __builtin_abort ();
  65   if (g8 (&tmp).x != 108 || !test (108, 107, 108))
  66     __builtin_abort ();
  67   if (g9 (tmp) != 9 || !test (109, 107, 108))
  68     __builtin_abort ();
  69   if (g10 (10) != 10 || !test (110, 107, 108))
  70     __builtin_abort ();
  71   return 0;
  72 }