1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -march=armv8-a+lse" } */
       3  
       4  /* Test ARMv8.1-A SWP instruction.  */
       5  
       6  #include "atomic-inst-ops.inc"
       7  
       8  #define TEST TEST_ONE
       9  
      10  #define SWAP_ATOMIC(FN, TY, MODEL)					\
      11    TY FNNAME (FN, TY) (TY* val, TY foo)					\
      12    {									\
      13      return __atomic_exchange_n (val, foo, MODEL);			\
      14    }
      15  
      16  #define SWAP_ATOMIC_NORETURN(FN, TY, MODEL)				\
      17    void FNNAME (FN, TY) (TY* val, TY* foo, TY* bar)			\
      18    {									\
      19      __atomic_exchange (val, foo, bar, MODEL);				\
      20    }
      21  
      22  
      23  TEST (swap_atomic, SWAP_ATOMIC)
      24  TEST (swap_atomic_noreturn, SWAP_ATOMIC_NORETURN)
      25  
      26  
      27  /* { dg-final { scan-assembler-times "swpb\t" 4} } */
      28  /* { dg-final { scan-assembler-times "swpab\t" 8} } */
      29  /* { dg-final { scan-assembler-times "swplb\t" 4} } */
      30  /* { dg-final { scan-assembler-times "swpalb\t" 8} } */
      31  
      32  /* { dg-final { scan-assembler-times "swph\t" 4} } */
      33  /* { dg-final { scan-assembler-times "swpah\t" 8} } */
      34  /* { dg-final { scan-assembler-times "swplh\t" 4} } */
      35  /* { dg-final { scan-assembler-times "swpalh\t" 8} } */
      36  
      37  /* { dg-final { scan-assembler-times "swp\t" 8} } */
      38  /* { dg-final { scan-assembler-times "swpa\t" 16} } */
      39  /* { dg-final { scan-assembler-times "swpl\t" 8} } */
      40  /* { dg-final { scan-assembler-times "swpal\t" 16} } */
      41  
      42  /* { dg-final { scan-assembler-not "ldaxr\t" } } */
      43  /* { dg-final { scan-assembler-not "stlxr\t" } } */
      44  /* { dg-final { scan-assembler-not "dmb" } } */