gcc/testsuite/gcc.dg/ipa/pr50744.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fno-optimize-sibling-calls" } */
   3
   4 extern int use_data (void *p_01, void *p_02, void *p_03, void *p_04, void *p_05,
   5                      void *p_06, void *p_07, void *p_08, void *p_09, void *p_10,
   6                      void *p_11, void *p_12, void *p_13, void *p_14, void *p_15,
   7                      void *p_16, void *p_17, void *p_18, void *p_19, void *p_20,
   8                      void *p_21, void *p_22, void *p_23, void *p_24, void *p_25,
   9                      void *p_26, void *p_27, void *p_28, void *p_29,
  10                      void *p_30);
  11
  12 extern int idx (int i, int j, int n);
  13
  14 struct stuff
  15 {
  16   int decision;
  17   int *a, *b, *c;
  18   int res;
  19 };
  20
  21
  22 #define some_large_stuff(stuff, n) { \
  23   int i, j, k; \
  24   for (i = 0; i < n; i++) \
  25     for (j = 0; j < n; j++) \
  26       { \
  27         int v = stuff->c[idx(i, j, n)]; \
  28         for (k = 0; k < n; k++) \
  29           v += stuff->a[idx(i, k, n)] * stuff->b[idx(k,j,n)]; \
  30         stuff->c[idx(i, j, n)] = v; \
  31       } \
  32 }
  33
  34 #define recursion if (iter > 0) \
  35     foo (stuff, iter - 1, (void *) -1, p_01, p_02, p_03, p_04, p_05, p_06, \
  36       p_07, p_08, p_09, p_10, p_11, p_12, p_13, p_14, p_15, p_16, p_17, \
  37      p_18, p_19, p_20, p_21, p_22, p_23, p_24, p_25, p_26, p_27, p_28, p_29); \
  38     else \
  39       foo (stuff, iter, p_01, p_02, p_03, p_04, p_05, p_06, p_07, p_08, p_09, \
  40         p_10, p_11, p_12, p_13, p_14, p_15, p_16, p_17, p_18, p_19, p_20, \
  41         p_21,p_22, p_23, p_24, p_25, p_26, p_27, p_28, p_29, p_30)
  42
  43 void
  44 foo (struct stuff *stuff,
  45      int iter,
  46      void *p_01, void *p_02, void *p_03, void *p_04, void *p_05,
  47      void *p_06, void *p_07, void *p_08, void *p_09, void *p_10,
  48      void *p_11, void *p_12, void *p_13, void *p_14, void *p_15,
  49      void *p_16, void *p_17, void *p_18, void *p_19, void *p_20,
  50      void *p_21, void *p_22, void *p_23, void *p_24, void *p_25,
  51      void *p_26, void *p_27, void *p_28, void *p_29, void *p_30)
  52 {
  53  switch (stuff->decision)
  54    {
  55    case 0:
  56      some_large_stuff (stuff, 83);
  57      stuff->res =
  58        use_data (p_01, p_02, p_03, p_04, p_05, p_06, p_07, p_08, p_09, p_10,
  59                  p_11, p_12, p_13, p_14, p_15, p_16, p_17, p_18, p_19, p_20,
  60                  p_21, p_22, p_23, p_24, p_25, p_26, p_27, p_28, p_29, p_30);
  61      recursion;
  62      break;
  63
  64    case 1:
  65      some_large_stuff (stuff, 25);
  66      stuff->res =
  67        use_data (p_11, p_02, p_03, p_04, p_05, p_06, p_07, p_08, p_09, p_10,
  68                  p_21, p_12, p_13, p_14, p_15, p_16, p_17, p_18, p_19, p_20,
  69                  p_01, p_22, p_23, p_24, p_25, p_26, p_27, p_28, p_29, p_30);
  70      recursion;
  71      break;
  72
  73    case 3:
  74      some_large_stuff (stuff, 139);
  75      stuff->res =
  76        use_data (p_01, p_12, p_03, p_04, p_05, p_06, p_07, p_08, p_09, p_10,
  77                  p_11, p_22, p_13, p_14, p_15, p_16, p_17, p_18, p_19, p_20,
  78                  p_21, p_02, p_23, p_24, p_25, p_26, p_27, p_28, p_29, p_30);
  79      recursion;
  80      break;
  81
  82    case 4:
  83      some_large_stuff (stuff, 32);
  84      stuff->res =
  85        use_data (p_01, p_02, p_13, p_04, p_05, p_06, p_07, p_08, p_09, p_10,
  86                  p_11, p_12, p_23, p_14, p_15, p_16, p_17, p_18, p_19, p_20,
  87                  p_21, p_22, p_03, p_24, p_25, p_26, p_27, p_28, p_29, p_30);
  88      recursion;
  89      break;
  90
  91    case 5:
  92      some_large_stuff (stuff, 205);
  93      stuff->res =
  94        use_data (p_01, p_02, p_03, p_04, p_15, p_06, p_07, p_08, p_09, p_10,
  95                  p_11, p_12, p_13, p_14, p_25, p_16, p_17, p_18, p_19, p_20,
  96                  p_21, p_22, p_23, p_24, p_05, p_26, p_27, p_28, p_29, p_30);
  97      recursion;
  98      break;
  99
 100    case 6:
 101      some_large_stuff (stuff, 64);
 102      stuff->res =
 103        use_data (p_01, p_02, p_03, p_04, p_05, p_16, p_07, p_08, p_09, p_10,
 104                  p_11, p_12, p_13, p_14, p_15, p_26, p_17, p_18, p_19, p_20,
 105                  p_21, p_22, p_23, p_24, p_25, p_06, p_27, p_28, p_29, p_30);
 106      recursion;
 107      break;
 108    }
 109 }
 110
 111 #define NULL (void *)0
 112
 113 void
 114 bar (struct stuff *stuff, int iter)
 115 {
 116   foo (stuff, iter, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 117        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 118        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
 119 }