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/*-------------------------------------------------------------------------
*
* arch-ia64.h
* Atomic operations considerations specific to intel itanium
*
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* NOTES:
*
* src/include/port/atomics/arch-ia64.h
*
*-------------------------------------------------------------------------
*/
/*
* Itanium is weakly ordered, so read and write barriers require a full
* fence.
*/
#if defined(__INTEL_COMPILER)
# define pg_memory_barrier_impl() __mf()
#elif defined(__GNUC__)
# define pg_memory_barrier_impl() __asm__ __volatile__ ("mf" : : : "memory")
#elif defined(__hpux)
# define pg_memory_barrier_impl() _Asm_mf()
#endif