gcc/testsuite/gcc.dg/ia64-sync-4.c

   1 /* { dg-do compile { target ia64-*-* } } */
   2 /* { dg-options "-O2 -finline-functions" } */
   3
   4 /* Test inlining __sync_bool_compare_and_swap_di.  */
   5
   6 #include <stdbool.h>
   7 #include <ia64intrin.h>
   8
   9 static bool
  10 compare_and_swap(long *addr, long old, long new_val)
  11 {
  12   return __sync_bool_compare_and_swap_di(addr, old, new_val);
  13 }
  14
  15 void
  16 foo (long *address)
  17 {
  18   long he_address = *address & ~1;
  19   while (!compare_and_swap(address, he_address, he_address | 1))
  20     he_address = *address & ~1;
  21 }