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

   1 /* Test case to check if function foo gets split and the cold function
   2    gets a label.  */
   3 /* { dg-require-effective-target freorder } */
   4 /* { dg-options "-O2 -freorder-blocks-and-partition -save-temps" } */
   5
   6 #define SIZE 10000
   7
   8 const char *sarr[SIZE];
   9 const char *buf_hot;
  10 const char *buf_cold;
  11
  12 __attribute__((noinline))
  13 void
  14 foo (int path)
  15 {
  16   int i;
  17   if (path)
  18     {
  19       for (i = 0; i < SIZE; i++)
  20         sarr[i] = buf_hot;
  21     }
  22   else
  23     {
  24       for (i = 0; i < SIZE; i++)
  25         sarr[i] = buf_cold;
  26     }
  27 }
  28
  29 int
  30 main (int argc, char *argv[])
  31 {
  32   int i;
  33   buf_hot =  "hello";
  34   buf_cold = "world";
  35   for (i = 0; i < 1000000; i++)
  36     foo (argc);
  37   return 0;
  38 }
  39
  40 /* { dg-final-use { scan-assembler "foo\[._\]+cold\[\._\]+0" { target *-*-linux* *-*-gnu* } } } */
  41 /* { dg-final-use { scan-assembler "size\[ \ta-zA-Z0-0\]+foo\[._\]+cold\[\._\]+0" { target *-*-linux* *-*-gnu* } } } */