gcc/testsuite/gcc.dg/struct-by-value-1.c

   1 /* Test structure passing by value.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2" } */
   4
   5 #define T(N)                                    \
   6 struct S##N { unsigned char i[N]; };            \
   7 struct S##N g1s##N, g2s##N, g3s##N;             \
   8                                                 \
   9 void                                            \
  10 init##N (struct S##N *p, int i)                 \
  11 {                                               \
  12   int j;                                        \
  13   for (j = 0; j < N; j++)                       \
  14     p->i[j] = i + j;                            \
  15 }                                               \
  16                                                 \
  17 void                                            \
  18 check##N (struct S##N *p, int i)                \
  19 {                                               \
  20   int j;                                        \
  21   for (j = 0; j < N; j++)                       \
  22     if (p->i[j] != i + j) abort ();             \
  23 }                                               \
  24                                                 \
  25 void                                            \
  26 test##N (struct S##N s1, struct S##N s2,        \
  27          struct S##N s3)                        \
  28 {                                               \
  29   check##N (&s1, 64);                           \
  30   check##N (&s2, 128);                          \
  31   check##N (&s3, 192);                          \
  32 }                                               \
  33                                                 \
  34 void                                            \
  35 test2_##N (struct S##N s1, struct S##N s2)      \
  36 {                                               \
  37   test##N (s1, g2s##N, s2);                     \
  38 }                                               \
  39                                                 \
  40 void                                            \
  41 testit##N (void)                                \
  42 {                                               \
  43   init##N (&g1s##N, 64);                        \
  44   check##N (&g1s##N, 64);                       \
  45   init##N (&g2s##N, 128);                       \
  46   check##N (&g2s##N, 128);                      \
  47   init##N (&g3s##N, 192);                       \
  48   check##N (&g3s##N, 192);                      \
  49   test##N (g1s##N, g2s##N, g3s##N);             \
  50   test2_##N (g1s##N, g3s##N);                   \
  51 }
  52
  53 extern void abort (void);
  54 extern void exit (int);
  55
  56 T(0) T(1) T(2) T(3) T(4) T(5) T(6) T(7)
  57 T(8) T(9) T(10) T(11) T(12) T(13) T(14) T(15)
  58 T(16) T(17) T(18) T(19) T(20) T(21) T(22) T(23)
  59 T(24) T(25) T(26) T(27) T(28) T(29) T(30) T(31)
  60 T(32) T(33) T(34) T(35) T(36) T(37) T(38) T(39)
  61 T(40) T(41) T(42) T(43) T(44) T(45) T(46) T(47)
  62 T(48) T(49) T(50) T(51) T(52) T(53) T(54) T(55)
  63 T(56) T(57) T(58) T(59) T(60) T(61) T(62) T(63)
  64
  65 #undef T
  66
  67 int
  68 main ()
  69 {
  70 #define T(N) testit##N ();
  71
  72 T(0) T(1) T(2) T(3) T(4) T(5) T(6) T(7)
  73 T(8) T(9) T(10) T(11) T(12) T(13) T(14) T(15)
  74 T(16) T(17) T(18) T(19) T(20) T(21) T(22) T(23)
  75 T(24) T(25) T(26) T(27) T(28) T(29) T(30) T(31)
  76 T(32) T(33) T(34) T(35) T(36) T(37) T(38) T(39)
  77 T(40) T(41) T(42) T(43) T(44) T(45) T(46) T(47)
  78 T(48) T(49) T(50) T(51) T(52) T(53) T(54) T(55)
  79 T(56) T(57) T(58) T(59) T(60) T(61) T(62) T(63)
  80
  81 #undef T
  82   exit (0);
  83 }