| /* |
| * 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/constraint_extract.cc |
| */ |
| |
| #include "constraint_extract.h" |
| |
| #include <tvm/arith/analyzer.h> |
| #include <tvm/tir/expr.h> |
| |
| #include "pattern_match.h" |
| |
| namespace tvm { |
| namespace arith { |
| |
| template <typename F> |
| void CollectConstraints(PrimExpr expr, F callback, bool keep_composite_constraints) { |
| if (keep_composite_constraints) { |
| callback(expr); |
| } |
| |
| PVar<PrimExpr> x, y; |
| if ((x && y).Match(expr)) { |
| CollectConstraints(x.Eval(), callback, keep_composite_constraints); |
| CollectConstraints(y.Eval(), callback, keep_composite_constraints); |
| } else if (!keep_composite_constraints) { |
| callback(expr); |
| } |
| } |
| |
| std::vector<PrimExpr> ExtractConstraints(const PrimExpr& expr, bool keep_composite_constraints) { |
| std::vector<PrimExpr> out; |
| CollectConstraints( |
| expr, [&](const PrimExpr& part) { out.push_back(part); }, keep_composite_constraints); |
| return out; |
| } |
| |
| template <typename F> |
| void CollectComponents(PrimExpr expr, F callback) { |
| PVar<PrimExpr> x, y; |
| if ((x || y).Match(expr)) { |
| CollectComponents(x.Eval(), callback); |
| CollectComponents(y.Eval(), callback); |
| } else { |
| callback(expr); |
| } |
| } |
| |
| std::vector<PrimExpr> ExtractComponents(const PrimExpr& expr) { |
| std::vector<PrimExpr> out; |
| CollectComponents(expr, [&](const PrimExpr& part) { out.push_back(part); }); |
| return out; |
| } |
| |
| } // namespace arith |
| } // namespace tvm |