Nikolas Klauser e78f53d1e8
Reapply "[libc++][C++03] Copy the LLVM 19 headers (#108999)" (#112127)
This reverts commit 68c04b0ae62d8431d72d8b47fc13008002ee4387.

This disables the IWYU mapping that caused the failure, since
the headers aren't reachable for now.

This is the first part of the "Freezing C++03 headers" proposal
explained in
https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319/58.

This patch mechanically copies the headers as of the LLVM 19.1 release
into a subdirectory of libc++ so that we can start using these headers
when building in C++03 mode. We are going to be backporting important
changes to that copy of the headers until the LLVM 21 release. After the
LLVM 21 release, only critical bugfixes will be fixed in the C++03 copy
of the headers.

This patch only performs a copy of the headers -- these headers are
still unused by the rest of the codebase.
2024-10-24 00:17:37 +02:00

89 lines
3.4 KiB
C++

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_EXPERIMENTAL_SIMD
#define _LIBCPP_EXPERIMENTAL_SIMD
/*
experimental/simd synopsis
namespace std::experimental {
inline namespace parallelism_v2 {
namespace simd_abi {
using scalar = see below;
template<int N> using fixed_size = see below;
template<class T> inline constexpr int max_fixed_size = implementation-defined;
template<class T> using compatible = implementation-defined;
template<class T> using native = implementation-defined;
template<class T, size_t N, class... Abis> struct deduce { using type = see below; };
template<class T, size_t N, class... Abis> using deduce_t =
typename deduce<T, N, Abis...>::type;
} // namespace simd_abi
// class template simd [simd.class]
template <class T, class Abi = simd_abi::compatible<T>> class simd;
template <class T> using native_simd = simd<T, simd_abi::native<T>>;
template <class T, int N> using fixed_size_simd = simd<T, simd_abi::fixed_size<N>>;
// class template simd_mask [simd.mask.class]
template <class T, class Abi = simd_abi::compatible<T>> class simd_mask;
template <class T> using native_simd_mask = simd_mask<T, simd_abi::native<T>>;
template <class T, int N> using fixed_size_simd_mask = simd_mask<T, simd_abi::fixed_size<N>>;
// memory alignment
struct element_aligned_tag {};
struct vector_aligned_tag {};
template <size_t> struct overaligned_tag {};
inline constexpr element_aligned_tag element_aligned{};
inline constexpr vector_aligned_tag vector_aligned{};
template <size_t N> inline constexpr overaligned_tag<N> overaligned{};
// traits [simd.traits]
template<class T> struct is_abi_tag;
template<class T> inline constexpr bool is_abi_tag_v = is_abi_tag<T>::value;
template <class T> struct is_simd;
template <class T> inline constexpr bool is_simd_v = is_simd<T>::value;
template <class T> struct is_simd_mask;
template <class T> inline constexpr bool is_simd_mask_v = is_simd_mask<T>::value;
template<class T> struct is_simd_flag_type;
template<class T> inline constexpr bool is_simd_flag_type_v = is_simd_flag_type<T>::value;
template<class T, class Abi = simd_abi::compatible<T>> struct simd_size;
template<class T, class Abi = simd_abi::compatible<T>>
inline constexpr size_t simd_size_v = simd_size<T,Abi>::value;
template<class T, class U = typename T::value_type> struct memory_alignment;
template<class T, class U = typename T::value_type>
inline constexpr size_t memory_alignment_v = memory_alignment<T,U>::value;
} // namespace parallelism_v2
} // namespace std::experimental
*/
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#include <experimental/__config>
#include <experimental/__simd/aligned_tag.h>
#include <experimental/__simd/declaration.h>
#include <experimental/__simd/reference.h>
#include <experimental/__simd/scalar.h>
#include <experimental/__simd/simd.h>
#include <experimental/__simd/simd_mask.h>
#include <experimental/__simd/traits.h>
#include <experimental/__simd/vec_ext.h>
#endif /* _LIBCPP_EXPERIMENTAL_SIMD */