gcc/testsuite/gcc.dg/tree-prof/switch-case-1.c

   1 /* { dg-options "-O2 -fdump-rtl-expand-all" } */
   2 int g;
   3
   4 __attribute__((noinline)) void foo (int  n)
   5 {
   6   switch (n)
   7     {
   8     case 1:
   9       g++; break;
  10     case 2:
  11       g += 2; break;
  12     case 3:
  13       g += 1; break;
  14     case 4:
  15       g += 3; break;
  16     case 5:
  17       g += 4; break;
  18     case 6:
  19       g += 5; break;
  20     case 7:
  21       g += 6; break;
  22     case 8:
  23       g += 7; break;
  24     case 9:
  25       g += 8; break;
  26     default:
  27       g += 8; break;
  28    }
  29 }
  30
  31 int main ()
  32 {
  33  int i;
  34  for (i = 0; i < 10000; i++)
  35    foo ((i * i) % 5);
  36  return 0;
  37 }
  38 /* autofdo cannot do that precise execution numbers */
  39 /* { dg-final-use-not-autofdo { scan-rtl-dump-times ";; basic block\[^\\n\]*count 4000" 2 "expand"} } */
  40 /* { dg-final-use-not-autofdo { scan-rtl-dump-times ";; basic block\[^\\n\]*count 2000" 1 "expand"} } */