gcc/testsuite/gcc.dg/torture/builtin-self.c

   1 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   2 /* Check that we can use this idiom to define out-of-line copies of built-in
   3    functions.  This is used by libgcc/sync.c, for example.  */
   4 void __sync_synchronize (void)
   5 {
   6   __sync_synchronize ();
   7 }
   8 /* { dg-final { scan-assembler "__sync_synchronize" } } */
   9 /* { dg-final { scan-assembler "\t(lock|mfence)" } } */
  10 /* { dg-final { scan-assembler-not "\tcall" } } */