170 lines
4.7 KiB
C++
170 lines
4.7 KiB
C++
// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <cassert>
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#include <cstdint>
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#include <cstdlib>
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#include <ostream>
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#include <string>
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#include <tuple>
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#include <type_traits>
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#include "paddle/pir/include/core/dll_decl.h"
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namespace pir {
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namespace detail {
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///
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/// \brief Equivalent to boost::hash_combine.
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///
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IR_API std::size_t hash_combine(std::size_t lhs, std::size_t rhs);
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///
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/// \brief Aligned malloc and free functions.
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///
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void *aligned_malloc(size_t size, size_t alignment);
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void aligned_free(void *mem_ptr);
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///
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/// \brief Some template methods for manipulating std::tuple.
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///
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/// (1) Pop front element from Tuple
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template <typename Tuple>
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struct PopFrontT;
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template <typename Head, typename... Tail>
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struct PopFrontT<std::tuple<Head, Tail...>> {
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public:
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using Type = std::tuple<Tail...>;
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};
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template <typename Tuple>
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using PopFront = typename PopFrontT<Tuple>::Type;
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/// (2) Push front element to Tuple
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template <typename NewElement, typename Tuple>
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struct PushFrontT;
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template <typename NewElement, typename... Elements>
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struct PushFrontT<NewElement, std::tuple<Elements...>> {
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public:
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using Type = std::tuple<NewElement, Elements...>;
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};
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template <typename NewElement, typename... Elements>
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struct PushFrontT<std::tuple<NewElement>, std::tuple<Elements...>> {
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public:
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using Type = std::tuple<NewElement, Elements...>;
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};
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template <typename NewElement, typename Tuple>
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using PushFront = typename PushFrontT<NewElement, Tuple>::Type;
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/// (3) IsEmpty
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template <typename Tuple>
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struct IsEmpty {
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static constexpr bool value = false;
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};
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template <>
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struct IsEmpty<std::tuple<>> {
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static constexpr bool value = true;
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};
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/// (4) IfThenElseT
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template <bool COND, typename TrueT, typename FalseT>
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struct IfThenElseT {
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using Type = TrueT;
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};
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template <typename TrueT, typename FalseT>
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struct IfThenElseT<false, TrueT, FalseT> {
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using Type = FalseT;
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};
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template <bool COND, typename TrueT, typename FalseT>
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using IfThenElse = typename IfThenElseT<COND, TrueT, FalseT>::Type;
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/// (5) Filter out all types inherited from BaseT from the tuple.
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template <template <typename> class BaseT,
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typename Tuple,
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bool Empty = IsEmpty<Tuple>::value>
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struct Filter;
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template <template <typename> class BaseT, typename Tuple>
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struct Filter<BaseT, Tuple, false> {
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private:
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using Matched =
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IfThenElse<std::is_base_of<BaseT<std::tuple_element_t<0, Tuple>>,
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std::tuple_element_t<0, Tuple>>::value,
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std::tuple<std::tuple_element_t<0, Tuple>>,
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std::tuple<>>;
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using Rest = typename Filter<BaseT, PopFront<Tuple>>::Type;
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public:
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using Type =
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IfThenElse<IsEmpty<Matched>::value, Rest, PushFront<Matched, Rest>>;
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};
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// basis case:
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template <template <typename> class BaseT, typename Tuple>
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struct Filter<BaseT, Tuple, true> {
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using Type = std::tuple<>;
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};
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template <typename ForwardIterator, typename UnaryFunctor, typename NullFunctor>
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void PrintInterleave(ForwardIterator begin,
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ForwardIterator end,
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UnaryFunctor print_func,
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NullFunctor between_func) {
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if (begin == end) return;
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print_func(*begin);
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begin++;
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for (; begin != end; begin++) {
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between_func();
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print_func(*begin);
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}
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}
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template <typename... Ts>
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struct make_void {
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typedef void type;
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};
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template <typename... Ts>
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using void_t = typename make_void<Ts...>::type;
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template <class, template <class...> class Op, class... Args>
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struct detector {
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using value_t = std::false_type;
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};
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template <template <class...> class Op, class... Args>
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struct detector<void_t<Op<Args...>>, Op, Args...> {
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using value_t = std::true_type;
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};
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template <template <class...> class Op, class... Args>
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using is_detected = typename detector<void, Op, Args...>::value_t;
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// Print content as follows.
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// ===-------------------------------------------------------------------------===
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// header
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// ===-------------------------------------------------------------------------===
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void PrintHeader(const std::string &header, std::ostream &os);
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} // namespace detail
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} // namespace pir
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