gcc/testsuite/gcc.dg/tree-prof/inliner-1.c

   1 /* { dg-options "-O2 -fdump-tree-optimized -fgnu89-inline" } */
   2 int a;
   3 int b[100];
   4 void abort (void);
   5
   6 inline void
   7 cold_function ()
   8 {
   9   int i;
  10   for (i = 0; i < 99; i++)
  11     if (b[i] / (b[i+1] + 1))
  12       abort ();
  13 }
  14
  15 inline void
  16 hot_function ()
  17 {
  18   int i;
  19   for (i = 0; i < 99; i++)
  20     if (b[i] / (b[i+1] + 1))
  21       abort ();
  22 }
  23
  24 int
  25 main ()
  26 {
  27   int i;
  28   for (i = 0; i < 1000000; i++)
  29     {
  30       if (a)
  31         cold_function ();
  32       else
  33         hot_function ();
  34     }
  35   return 0;
  36 }
  37
  38 /* cold function should be inlined, while hot function should not.
  39    Look for "cold_function () [tail call];" call statement not for the
  40    declaration or other appearances of the string in dump.  */
  41 /* { dg-final-use { scan-tree-dump "cold_function ..;" "optimized"} } */
  42 /* { dg-final-use { scan-tree-dump-not "hot_function ..;" "optimized"} } */