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

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target sync_int_long } */
   3 /* { dg-options "-O2 -finline-functions" } */
   4 /* { dg-options "-march=i486" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
   5 /* { dg-options "-mcpu=v9" { target sparc*-*-* } } */
   6
   7 /* Test inlining __sync_bool_compare_and_swap.  */
   8
   9 #include <stdbool.h>
  10
  11 static bool
  12 compare_and_swap(long *addr, long old, long new_val)
  13 {
  14   return __sync_bool_compare_and_swap(addr, old, new_val);
  15 }
  16
  17 void
  18 foo (long *address)
  19 {
  20   long he_address = *address & ~1;
  21   while (!compare_and_swap(address, he_address, he_address | 1))
  22     he_address = *address & ~1;
  23 }