gcc/testsuite/gcc.dg/tree-prof/pr108000.c

   1 /* { dg-options "-O2" } */
   2
   3 #include <stdlib.h>
   4
   5 volatile int flag;
   6 const int array_size = 10;
   7 int* array;
   8 int iterations = 10000000;
   9
  10 #define BAR(num) \
  11 int __attribute__((noinline)) \
  12 bar##num (int i, int j) \
  13 { \
  14   if (i == 0) \
  15     return 2*num - 1; \
  16   else \
  17     return 2*num; \
  18 }
  19
  20 BAR(1)
  21 BAR(2)
  22 BAR(3)
  23 BAR(4)
  24 BAR(5)
  25 BAR(6)
  26 BAR(7)
  27 BAR(8)
  28 BAR(9)
  29 BAR(10)
  30 BAR(11)
  31 BAR(12)
  32 BAR(13)
  33 BAR(14)
  34 BAR(15)
  35 BAR(16)
  36 BAR(17)
  37 BAR(18)
  38 BAR(19)
  39
  40 int __attribute__((noinline))
  41 foo ()
  42 {
  43   switch (flag)
  44   {
  45         case 1:
  46                 return bar1 (0, 0);
  47         case 2:
  48                 return bar2 (0, 0);
  49         case 3:
  50                 return bar3 (0, 0);
  51         case 4:
  52                 return bar4 (0, 0);
  53         case 5:
  54                 return bar5 (0, 0);
  55         case 6:
  56                 return bar6 (0, 0);
  57         case 7:
  58                 return bar7 (0, 0);
  59         case 8:
  60                 return bar8 (0, 0);
  61         case 9:
  62                 return bar9 (0, 0);
  63         case 10:
  64                 return bar10 (0, 0);
  65         case 11:
  66                 return bar11 (0, 0);
  67         case 12:
  68                 return bar12 (0, 0);
  69         case 13:
  70                 return bar13 (0, 0);
  71         case 14:
  72                 return bar14 (0, 0);
  73         case 15:
  74                 return bar15 (0, 0);
  75         case 16:
  76                 return bar16 (0, 0);
  77         case 17:
  78                 return bar17 (0, 0);
  79         case 18:
  80                 return bar18 (0, 0);
  81         default:
  82                 return bar19(0, 0);
  83   }
  84 }
  85
  86 int
  87 main ()
  88 {
  89   flag = 0;
  90   array = calloc(array_size, sizeof(int));
  91   for (int i = 0, j = 0; i < iterations; ++i, j = (j + 1) % 10)
  92     array[j] = foo ();
  93 }