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[REFACTOR][ARITH] Unified IR, introduce arith subfolder. (apache#4722)
Spread the arithmetic.h into several components and move into arith subfolder. The arith namespace will be used for arithmetic expression pattern detections and simplifications.
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| /*! | ||
| * \file tvm/arith/bound.h | ||
| * \brief Bound deducers. | ||
| */ | ||
| #ifndef TVM_ARITH_BOUND_H_ | ||
| #define TVM_ARITH_BOUND_H_ | ||
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| #include <tvm/node/container.h> | ||
| #include <tvm/ir/expr.h> | ||
| #include <tvm/arith/int_set.h> | ||
| #include <tvm/expr.h> | ||
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| #include <unordered_map> | ||
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| namespace tvm { | ||
| // forward delcare Tensor | ||
| class Tensor; | ||
| namespace arith { | ||
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| /*! | ||
| * \brief Deduce the bound of the target variable in a expression, | ||
| * give the domain of each variables. Return undefined IntSet to | ||
| * represent failure. | ||
| * | ||
| * \note The returned set may be smaller than set that | ||
| * contains all possible values of v that satisfies the bound. | ||
| * | ||
| * \param v The target variable to be deduced. | ||
| * \param cond The conditional expression. | ||
| * \param hint_map The domain of variable, used to help deduce. | ||
| * \param relax_map The domain of each variable, used to relax the domain, | ||
| * The deduce bound must implies e for all value in relax_map | ||
| * \return An integer set that always satisfies the condition. | ||
| */ | ||
| IntSet DeduceBound(PrimExpr v, PrimExpr cond, | ||
| const Map<Var, IntSet>& hint_map, | ||
| const Map<Var, IntSet>& relax_map); | ||
| /*! | ||
| * \brief Same as DeduceBound with unordered_map signature. | ||
| * | ||
| * \param v The target variable to be deduced. | ||
| * \param cond The conditional expression. | ||
| * \param hint_map The domain of variable, used to help deduce. | ||
| * \param relax_map The domain of each variable, used to relax the domain, | ||
| * The deduce bound mush implies e for all value in relax_map | ||
| * \return An integer set that always satisfies the condition. | ||
| */ | ||
| IntSet DeduceBound(PrimExpr v, PrimExpr cond, | ||
| const std::unordered_map<const VarNode*, IntSet>& hint_map, | ||
| const std::unordered_map<const VarNode*, IntSet>& relax_map); | ||
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| /*! | ||
| * \brief Infer a regular domain that covers all the calls or provides within the given statement. | ||
| * \param body The given statement. | ||
| * \param tensor The name of the calls or provides. | ||
| * \param consider_calls If calls (read) are considered. | ||
| * \param consider_provides If provides (write) are considered. | ||
| * \return The domain that covers all the calls or provides within the given statement. | ||
| */ | ||
| Domain DomainTouched(Stmt body, const Tensor &tensor, bool consider_calls, bool consider_provides); | ||
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| } // namespace arith | ||
| } // namespace tvm | ||
| #endif // TVM_ARITH_BOUND_H_ |
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