derek.holloway
7502bf64a4
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85 lines
3.2 KiB
C++
85 lines
3.2 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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// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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// When the debug mode is enabled, we don't unwrap iterators in cuda::std::copy
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// so we don't get this optimization.
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// UNSUPPORTED: libcpp-has-debug-mode
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// check that cuda::std::__unwrap_iter() returns the correct type
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// #include <cuda/std/algorithm>
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#include <cuda/std/cassert>
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#ifdef _LIBCUDACXX_HAS_STRING
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# include <cuda/std/string>
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#endif
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#include <cuda/std/type_traits>
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#include <cuda/std/utility>
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#include "test_iterators.h"
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#include "test_macros.h"
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template <class Iter>
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using UnwrapT = decltype(cuda::std::__unwrap_iter(cuda::std::declval<Iter>()));
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template <class Iter>
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using rev_iter = cuda::std::reverse_iterator<Iter>;
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template <class Iter>
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using rev_rev_iter = rev_iter<rev_iter<Iter>>;
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static_assert(cuda::std::is_same<UnwrapT<int*>, int*>::value, "");
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#ifndef _LIBCUDACXX_ENABLE_DEBUG_MODE
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static_assert(cuda::std::is_same<UnwrapT<cuda::std::__wrap_iter<int*>>, int*>::value, "");
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#endif // _LIBCUDACXX_ENABLE_DEBUG_MODE
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static_assert(cuda::std::is_same<UnwrapT<rev_iter<int*>>, cuda::std::reverse_iterator<int*>>::value, "");
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static_assert(cuda::std::is_same<UnwrapT<rev_rev_iter<int*>>, int*>::value, "");
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#ifndef _LIBCUDACXX_ENABLE_DEBUG_MODE
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static_assert(cuda::std::is_same<UnwrapT<rev_rev_iter<cuda::std::__wrap_iter<int*>>>, int*>::value, "");
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#endif // _LIBCUDACXX_ENABLE_DEBUG_MODE
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static_assert(cuda::std::is_same<UnwrapT<rev_rev_iter<rev_iter<cuda::std::__wrap_iter<int*>>>>,
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rev_iter<cuda::std::__wrap_iter<int*>>>::value,
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"");
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static_assert(cuda::std::is_same<UnwrapT<random_access_iterator<int*>>, random_access_iterator<int*>>::value, "");
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static_assert(
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cuda::std::is_same<UnwrapT<rev_iter<random_access_iterator<int*>>>, rev_iter<random_access_iterator<int*>>>::value,
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"");
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static_assert(
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cuda::std::is_same<UnwrapT<rev_rev_iter<random_access_iterator<int*>>>, random_access_iterator<int*>>::value, "");
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static_assert(cuda::std::is_same<UnwrapT<rev_rev_iter<rev_iter<random_access_iterator<int*>>>>,
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rev_iter<random_access_iterator<int*>>>::value,
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"");
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#ifdef _LIBCUDACXX_HAS_STRING
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TEST_CONSTEXPR_CXX20 bool test()
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{
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cuda::std::string str = "Banane";
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using Iter = cuda::std::string::iterator;
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assert(cuda::std::__unwrap_iter(str.begin()) == str.data());
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assert(cuda::std::__unwrap_iter(str.end()) == str.data() + str.size());
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assert(cuda::std::__unwrap_iter(rev_rev_iter<Iter>(rev_iter<Iter>(str.begin()))) == str.data());
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assert(cuda::std::__unwrap_iter(rev_rev_iter<Iter>(rev_iter<Iter>(str.end()))) == str.data() + str.size());
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return true;
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}
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#endif // _LIBCUDACXX_HAS_STRING
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int main(int, char**)
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{
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#ifdef _LIBCUDACXX_HAS_STRING
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test();
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# if TEST_STD_VER > 2017
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static_assert(test());
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# endif // TEST_STD_VER > 2017
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#endif // _LIBCUDACXX_HAS_STRING
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return 0;
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}
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