gcc/testsuite/gcc.dg/tree-prof/init-array.c

   1 /* { dg-options "-O3 -fdump-tree-cunrolli-details" } */
   2
   3 static int s[10][10][10];
   4 static int d[10][10][10];
   5
   6 __attribute__((noipa))
   7 int array()
   8 {
   9         int i;
  10         register int j, k;
  11         for (i = 0; i < 10; i++)
  12                 for (j = 0; j < 10; j++)
  13                         for (k = 0; k < 10; k++)
  14                                 d[i][j][k] = s[i][j][k];
  15
  16         return(0);
  17 }
  18
  19 __attribute__((noipa))
  20 void TestBench()
  21 {
  22         for (int i = 0; i < 150000; ++i)
  23         {
  24            array();
  25         }
  26 }
  27
  28 int main(int argc, char *argv[])
  29 {
  30
  31         TestBench();
  32
  33         if (d[9][9][9] == 0 && s[9][9][9] == 0)
  34         {
  35                 return 0;
  36         }
  37         else
  38         {
  39                 return -1;
  40         }
  41 }
  42
  43 /* { dg-final-use { scan-tree-dump-times "loop with 10 iterations completely unrolled" 2 "cunrolli"} } */