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aea7929b0a
When working on an OpenMP offloading backend for standard parallel algorithms (https://github.com/llvm/llvm-project/pull/66968) we noticed the need of a generalization of `__is_trivial_plus_operation`. This patch merges `__is_trivial_equality_predicate` and `__is_trivial_plus_operation` into `__desugars_to`, and in the future we might extend the latter to support other binary operations as well. Co-authored-by: Louis Dionne <ldionne.2@gmail.com>
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ALGORITHM_COMP_H
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#define _LIBCPP___ALGORITHM_COMP_H
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#include <__config>
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#include <__type_traits/integral_constant.h>
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#include <__type_traits/operation_traits.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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struct __equal_to {
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template <class _T1, class _T2>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _T1& __x, const _T2& __y) const {
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return __x == __y;
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}
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};
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template <class _Tp, class _Up>
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struct __desugars_to<__equal_tag, __equal_to, _Tp, _Up> : true_type {};
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// The definition is required because __less is part of the ABI, but it's empty
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// because all comparisons should be transparent.
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template <class _T1 = void, class _T2 = _T1>
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struct __less {};
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template <>
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struct __less<void, void> {
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template <class _Tp, class _Up>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _Tp& __lhs, const _Up& __rhs) const {
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return __lhs < __rhs;
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}
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ALGORITHM_COMP_H
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