gcc/testsuite/gcc.dg/gcc-have-sync-compare-and-swap.c

   1 /* { dg-do link } */
   2 /* MIPS only supports these built-in functions for non-MIPS16 mode, and
   3    -mflip-mips16 will change the mode of some functions to be different
   4    from the command-line setting.  */
   5 /* { dg-skip-if "" { mips*-*-* } { "-mflip-mips16" } { "" } } */
   6
   7 void f1()
   8 {
   9 #ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1
  10   typedef int __attribute__  ((__mode__ (__QI__))) qi_int_type;
  11   qi_int_type qi_int;
  12   __sync_bool_compare_and_swap (&qi_int, (qi_int_type)0, (qi_int_type)1);
  13 #endif
  14 }
  15
  16 void f2()
  17 {
  18 #ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2
  19   typedef int __attribute__ ((__mode__ (__HI__))) hi_int_type;
  20   hi_int_type hi_int;
  21   __sync_bool_compare_and_swap (&hi_int, (hi_int_type)0, (hi_int_type)1);
  22 #endif
  23 }
  24
  25 void f4()
  26 {
  27 #ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
  28   typedef int __attribute__ ((__mode__ (__SI__))) si_int_type;
  29   si_int_type si_int;
  30   __sync_bool_compare_and_swap (&si_int, (si_int_type)0, (si_int_type)1);
  31 #endif
  32 }
  33
  34 void f8()
  35 {
  36 #ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
  37   typedef int __attribute__ ((__mode__ (__DI__))) di_int_type;
  38   di_int_type di_int;
  39   __sync_bool_compare_and_swap (&di_int, (di_int_type)0, (di_int_type)1);
  40 #endif
  41 }
  42
  43 /* aligned (16): On S/390 16 byte compare and swap operations are only
  44    available if the memory operand resides on a 16 byte boundary.  */
  45 void f16()
  46 {
  47 #ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16
  48   typedef int __attribute__ ((__mode__ (__TI__), aligned (16))) ti_int_type;
  49   ti_int_type ti_int;
  50   __sync_bool_compare_and_swap (&ti_int, (ti_int_type)0, (ti_int_type)1);
  51 #endif
  52 }
  53
  54 int main()
  55 {
  56   f1();
  57   f2();
  58   f4();
  59   f8();
  60   f16();
  61   return 0;
  62 }