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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-tailc-details" } */
   3
   4 struct s { int x; };
   5 void f_direct (struct s);
   6 void f_indirect (struct s *);
   7 void f_void (void);
   8
   9 /* Tail call.  */
  10 void
  11 g1 (struct s param)
  12 {
  13   f_direct (param);
  14 }
  15
  16 /* Tail call.  */
  17 void
  18 g2 (struct s *param_ptr)
  19 {
  20   f_direct (*param_ptr);
  21 }
  22
  23 /* Tail call.  */
  24 void
  25 g3 (struct s *param_ptr)
  26 {
  27   f_indirect (param_ptr);
  28 }
  29
  30 /* Tail call.  */
  31 void
  32 g4 (struct s *param_ptr)
  33 {
  34   f_indirect (param_ptr);
  35   f_void ();
  36 }
  37
  38 /* Tail call.  */
  39 void
  40 g5 (struct s param)
  41 {
  42   struct s local = param;
  43   f_direct (local);
  44 }
  45
  46 /* Tail call.  */
  47 void
  48 g6 (struct s param)
  49 {
  50   struct s local = param;
  51   f_direct (local);
  52   f_void ();
  53 }
  54
  55 /* Not a tail call.  */
  56 void
  57 g7 (struct s param)
  58 {
  59   struct s local = param;
  60   f_indirect (&local);
  61 }
  62
  63 /* Not a tail call.  */
  64 void
  65 g8 (struct s *param_ptr)
  66 {
  67   struct s local = *param_ptr;
  68   f_indirect (&local);
  69 }
  70
  71 /* Not a tail call.  */
  72 void
  73 g9 (struct s *param_ptr)
  74 {
  75   struct s local = *param_ptr;
  76   f_indirect (&local);
  77   f_void ();
  78 }
  79
  80 /* { dg-final { scan-tree-dump-times "Found tail call" 6 "tailc" } } */