gcc/testsuite/gcc.target/powerpc/ppc-get-timebase.c

   1 /* { dg-do run { target { powerpc*-*-* } } } */
   2
   3 /* Test if __builtin_ppc_get_timebase () is compatible with the current
   4    processor and if it's changing between reads.  A read failure might indicate
   5    a Power ISA or binutils change.  */
   6
   7 #include <inttypes.h>
   8
   9 int
  10 main (void)
  11 {
  12   uint64_t t = __builtin_ppc_get_timebase ();
  13   int j;
  14
  15   for (j = 0; j < 1000000; j++)
  16     if (t != __builtin_ppc_get_timebase ())
  17       return 0;
  18
  19   return 1;
  20 }