1  /* PR target/70821 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Os" } */
       4  /* { dg-additional-options "-march=i686" { target ia32 } } */
       5  
       6  void bar (void);
       7  
       8  void
       9  foo (int *p)
      10  {
      11    if (__atomic_sub_fetch (p, 1, __ATOMIC_SEQ_CST))
      12      bar ();
      13  }
      14  
      15  /* { dg-final { scan-assembler "lock;? dec" } } */
      16  /* { dg-final { scan-assembler-not "lock;? xadd" } } */