1 files changed, 0 insertions, 177 deletions
diff --git a/lib/libcxx/src/include/atomic_support.h b/lib/libcxx/src/include/atomic_support.h
deleted file mode 100644
index ccd8d78d3d7..00000000000
--- a/lib/libcxx/src/include/atomic_support.h
+++ /dev/null
@@ -1,177 +0,0 @@
-//===----------------------------------------------------------------------===////
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===////
-
-#ifndef ATOMIC_SUPPORT_H
-#define ATOMIC_SUPPORT_H
-
-#include "__config"
-#include "memory" // for __libcpp_relaxed_load
-
-#if defined(__clang__) && __has_builtin(__atomic_load_n)             \
-                       && __has_builtin(__atomic_store_n)            \
-                       && __has_builtin(__atomic_add_fetch)          \
-                       && __has_builtin(__atomic_exchange_n)         \
-                       && __has_builtin(__atomic_compare_exchange_n) \
-                       && defined(__ATOMIC_RELAXED)                  \
-                       && defined(__ATOMIC_CONSUME)                  \
-                       && defined(__ATOMIC_ACQUIRE)                  \
-                       && defined(__ATOMIC_RELEASE)                  \
-                       && defined(__ATOMIC_ACQ_REL)                  \
-                       && defined(__ATOMIC_SEQ_CST)
-#   define _LIBCPP_HAS_ATOMIC_BUILTINS
-#elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407
-#   define _LIBCPP_HAS_ATOMIC_BUILTINS
-#endif
-
-#if !defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS)
-# if defined(_LIBCPP_WARNING)
-    _LIBCPP_WARNING("Building libc++ without __atomic builtins is unsupported")
-# else
-#   warning Building libc++ without __atomic builtins is unsupported
-# endif
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-namespace {
-
-#if defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS)
-
-enum __libcpp_atomic_order {
-    _AO_Relaxed = __ATOMIC_RELAXED,
-    _AO_Consume = __ATOMIC_CONSUME,
-    _AO_Acquire = __ATOMIC_ACQUIRE,
-    _AO_Release = __ATOMIC_RELEASE,
-    _AO_Acq_Rel = __ATOMIC_ACQ_REL,
-    _AO_Seq     = __ATOMIC_SEQ_CST
-};
-
-template <class _ValueType, class _FromType>
-inline _LIBCPP_INLINE_VISIBILITY
-void __libcpp_atomic_store(_ValueType* __dest, _FromType __val,
-                           int __order = _AO_Seq)
-{
-    __atomic_store_n(__dest, __val, __order);
-}
-
-template <class _ValueType, class _FromType>
-inline _LIBCPP_INLINE_VISIBILITY
-void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val)
-{
-    __atomic_store_n(__dest, __val, _AO_Relaxed);
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_atomic_load(_ValueType const* __val,
-                                int __order = _AO_Seq)
-{
-    return __atomic_load_n(__val, __order);
-}
-
-template <class _ValueType, class _AddType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a,
-                               int __order = _AO_Seq)
-{
-    return __atomic_add_fetch(__val, __a, __order);
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_atomic_exchange(_ValueType* __target,
-                                    _ValueType __value, int __order = _AO_Seq)
-{
-    return __atomic_exchange_n(__target, __value, __order);
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-bool __libcpp_atomic_compare_exchange(_ValueType* __val,
-    _ValueType* __expected, _ValueType __after,
-    int __success_order = _AO_Seq,
-    int __fail_order = _AO_Seq)
-{
-    return __atomic_compare_exchange_n(__val, __expected, __after, true,
-                                       __success_order, __fail_order);
-}
-
-#else // _LIBCPP_HAS_NO_THREADS
-
-enum __libcpp_atomic_order {
-    _AO_Relaxed,
-    _AO_Consume,
-    _AO_Acquire,
-    _AO_Release,
-    _AO_Acq_Rel,
-    _AO_Seq
-};
-
-template <class _ValueType, class _FromType>
-inline _LIBCPP_INLINE_VISIBILITY
-void __libcpp_atomic_store(_ValueType* __dest, _FromType __val,
-                           int = 0)
-{
-    *__dest = __val;
-}
-
-template <class _ValueType, class _FromType>
-inline _LIBCPP_INLINE_VISIBILITY
-void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val)
-{
-    *__dest = __val;
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_atomic_load(_ValueType const* __val,
-                                int = 0)
-{
-    return *__val;
-}
-
-template <class _ValueType, class _AddType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a,
-                               int = 0)
-{
-    return *__val += __a;
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_atomic_exchange(_ValueType* __target,
-                                    _ValueType __value, int __order = _AO_Seq)
-{
-    _ValueType old = *__target;
-    *__target = __value;
-    return old;
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-bool __libcpp_atomic_compare_exchange(_ValueType* __val,
-    _ValueType* __expected, _ValueType __after,
-    int = 0, int = 0)
-{
-    if (*__val == *__expected) {
-        *__val = __after;
-        return true;
-    }
-    *__expected = *__val;
-    return false;
-}
-
-#endif // _LIBCPP_HAS_NO_THREADS
-
-} // end namespace
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // ATOMIC_SUPPORT_H