diff --git a/src/ia64/flush_cache-ia64.c b/src/ia64/flush_cache-ia64.c
deleted file mode 100644
index 25f869d7..00000000
--- a/src/ia64/flush_cache-ia64.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* libunwind - a platform-independent unwind library
-   Copyright (C) 2002-2004 Hewlett-Packard Co
-	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
-
-This file is part of libunwind.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
-
-#include "internal.h"
-#include "tdep.h"
-
-PROTECTED void
-unw_flush_cache (unw_addr_space_t as, unw_word_t lo, unw_word_t hi)
-{
-  /* clear dyn_info_list_addr cache: */
-  as->dyn_info_list_addr = 0;
-
-  /* This lets us flush caches lazily.  The implementation currently
-     ignores the flush range arguments (lo-hi).  This is OK because
-     unw_flush_cache() is allowed to flush more than the requested
-     range. */
-
-#ifdef HAVE_FETCH_AND_ADD1
-  fetch_and_add1 (&as->cache_generation);
-#else
-# warning unw_flush_cache(): need a way to atomically increment an integer.
-  ++as->cache_generation;
-#endif
-}