1 files changed, 0 insertions, 125 deletions
diff --git a/gcc-4.8.1/libatomic/cas_n.c b/gcc-4.8.1/libatomic/cas_n.c
deleted file mode 100644
index a47026838..000000000
--- a/gcc-4.8.1/libatomic/cas_n.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* Copyright (C) 2012-2013 Free Software Foundation, Inc.
-   Contributed by Richard Henderson <rth@redhat.com>.
-
-   This file is part of the GNU Atomic Library (libatomic).
-
-   Libatomic is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
-   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-   more details.
-
-   Under Section 7 of GPL version 3, you are granted additional
-   permissions described in the GCC Runtime Library Exception, version
-   3.1, as published by the Free Software Foundation.
-
-   You should have received a copy of the GNU General Public License and
-   a copy of the GCC Runtime Library Exception along with this program;
-   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include "libatomic_i.h"
-
-
-/* If we support the builtin, just use it.  */
-#if !DONE && defined(atomic_compare_exchange_n)
-bool
-SIZE(libat_compare_exchange) (UTYPE *mptr, UTYPE *eptr, UTYPE newval,
-			      int smodel, int fmodel UNUSED)
-{
-  if (maybe_specialcase_relaxed(smodel))
-    return atomic_compare_exchange_n (mptr, eptr, newval, false,
-				      __ATOMIC_RELAXED, __ATOMIC_RELAXED);
-  else if (maybe_specialcase_acqrel(smodel))
-    return atomic_compare_exchange_n (mptr, eptr, newval, false,
-				      __ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
-  else
-    return atomic_compare_exchange_n (mptr, eptr, newval, false,
-				      __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);
-}
-
-#define DONE 1
-#endif /* HAVE_ATOMIC_CAS */
-
-
-/* If this type is not larger than word-sized, fall back to a word-sized
-   compare-and-swap loop, possibly assisted by the OS.  */
-#if !DONE && N <= WORDSIZE && defined(atomic_compare_exchange_w)
-bool
-SIZE(libat_compare_exchange) (UTYPE *mptr, UTYPE *eptr, UTYPE newval,
-			      int smodel, int fmodel UNUSED)
-{
-  UWORD mask, shift, weval, woldval, wnewval, t, *wptr;
-  bool ret = false;
-
-  pre_barrier (smodel);
-
-  if (N < WORDSIZE)
-    {
-      wptr = (UWORD *)((uintptr_t)mptr & -WORDSIZE);
-      shift = (((uintptr_t)mptr % WORDSIZE) * CHAR_BIT) ^ SIZE(INVERT_MASK);
-      mask = SIZE(MASK) << shift;
-    }
-  else
-    {
-      wptr = (UWORD *)mptr;
-      shift = 0;
-      mask = -1;
-    }
-
-  weval = *eptr << shift;
-  wnewval = (UWORD)newval << shift;
-  woldval = __atomic_load_n (wptr, __ATOMIC_RELAXED);
-  do
-    {
-      if ((woldval & mask) != weval)
-	goto failure;
-      t = (woldval & ~mask) | wnewval;
-    }
-  while (!atomic_compare_exchange_w (wptr, &woldval, t, true,
-				     __ATOMIC_RELAXED, __ATOMIC_RELAXED));
-  ret = true;
- failure:
-  *eptr = woldval >> shift;
-
-  post_barrier (smodel);
-  return ret;
-}
-
-#define DONE 1
-#endif /* HAVE_ATOMIC_CAS && N <= WORDSIZE */
-
-
-/* Otherwise, fall back to some sort of protection mechanism.  */
-#if !DONE
-bool
-SIZE(libat_compare_exchange) (UTYPE *mptr, UTYPE *eptr, UTYPE newval,
-			      int smodel, int fmodel UNUSED)
-{
-  UTYPE oldval;
-  UWORD magic;
-  bool ret = false;
-
-  pre_seq_barrier (smodel);
-  magic = protect_start (mptr);
-
-  oldval = *mptr;
-  if (oldval == *eptr)
-    {
-      *mptr = newval;
-      ret = true;
-    }
-  *eptr = oldval;
-
-  protect_end (mptr, magic);
-  post_seq_barrier (smodel);
-
-  return ret;
-}
-#endif
-
-EXPORT_ALIAS (SIZE(compare_exchange));