libstdc++: Remove unused config/cpu/cris/atomicity.h file [PR122172]

This file is no longer used, because we always use the definitions in
config/cpu/generic/atomicity_builtins/atomicity.h now.

H-P confirmed that the code generated by __atomic_fetch_add is fine and
we don't need the handwritten assembly.

libstdc++-v3/ChangeLog:

	PR libstdc++/122172
	* config/cpu/cris/atomicity.h: Removed.

Reviewed-by: Hans-Peter Nilsson <hp@axis.com>

diff --git a/libstdc++-v3/config/cpu/cris/atomicity.h b/libstdc++-v3/config/cpu/cris/atomicity.h
deleted file mode 100644 (file)
index 9d3cec4..0000000
--- a/libstdc++-v3/config/cpu/cris/atomicity.h
+++ /dev/null
@@ -1,89 +0,0 @@
-// Low-level functions for atomic operations: CRIS version  -*- C++ -*-
-
-// Copyright (C) 2001-2025 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option)
-// any later version.
-
-// This library 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 <ext/atomicity.h>
-
-namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
-{
-_GLIBCXX_BEGIN_NAMESPACE_VERSION
-
-  _Atomic_word
-  __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
-  {
-    int __tmp;
-    _Atomic_word __result;
-
-#if (__CRIS_arch_version >= 32)
-  __asm__ __volatile__ (" clearf p            \n"
-                      "0:                     \n"
-                      " move.d %4,%2          \n"
-                      " move.d [%3],%0        \n"
-                      " add.d %0,%2           \n"
-                      " ax                    \n"
-                      " move.d %2,[%3]        \n"
-                      " bcs 0b                \n"
-                      " clearf p              \n"
-                      :  "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
-                      : "r" (__mem), "g" (__val), "Q" (*__mem)
-                      : "memory");
-#elif (__CRIS_arch_version >= 10)
-    __asm__ __volatile__ (" clearf             \n"
-                       "0:                     \n"
-                       " move.d %4,%2          \n"
-                       " move.d [%3],%0        \n"
-                       " add.d %0,%2           \n"
-                       " ax                    \n"
-                       " move.d %2,[%3]        \n"
-                       " bwf 0b                \n"
-                       " clearf                \n"
-                       :  "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
-                       : "r" (__mem), "g" (__val), "Q" (*__mem)
-                       /* The memory clobber must stay, regardless of
-                          current uses of this function.  */
-                       : "memory");
-#else
-    __asm__ __volatile__ (" move $ccr,$r9      \n"
-                       " di                    \n"
-                       " move.d %4,%2          \n"
-                       " move.d [%3],%0        \n"
-                       " add.d %0,%2           \n"
-                       " move.d %2,[%3]        \n"
-                       " move $r9,$ccr         \n"
-                       :  "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
-                       : "r" (__mem), "g" (__val), "Q" (*__mem)
-                       : "r9",
-                         /* The memory clobber must stay, regardless of
-                            current uses of this function.  */
-                         "memory");
-#endif
-
-    return __result;
-  }
-
-  void
-  __atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
-  { __exchange_and_add(__mem, __val); }
-
-_GLIBCXX_END_NAMESPACE_VERSION
-} // namespace