| /* |
| * 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 contraint_extract.h |
| * |
| * \brief Centralized location for extraction of constraints from a boolean expression. |
| */ |
| |
| #ifndef TVM_ARITH_CONSTRAINT_EXTRACT_H_ |
| #define TVM_ARITH_CONSTRAINT_EXTRACT_H_ |
| |
| #include <tvm/tir/expr.h> |
| |
| #include <vector> |
| |
| namespace tvm { |
| namespace arith { |
| |
| /* \brief Returns constraints that are true if the expression is true. |
| * |
| * Utility to break up a boolean expression into independent |
| * constraints. |
| * |
| * Example: `i==5 && j==3` => `[i==5 && j==3, i==5, j==3]` |
| * Example: `i==5 || j==3` => `[i==5 || j==3]` |
| * Example: `!(i>5 || j==3)` => `[!(i==5 || j==3), i<=5, j!=3]` |
| * |
| * If `keep_composite_constraints` is true (default), a constraint |
| * that can be decomposed will be included in the output. If false, |
| * they will be excluded. |
| * |
| * Example, removing composite: `!(i>5 || j==3)` => `[i<=5, j!=3]` |
| * |
| * Intended for use in bounds analysis or simplification within a |
| * conditional, or identifying independent conditionals that may be |
| * hoisted. |
| * |
| * \param expr The expression to be analyzers |
| * |
| * \param keep_composite_constraints Whether to include composite |
| * constraints in the output. |
| * |
| * \returns A vector of independent constraints |
| */ |
| std::vector<PrimExpr> ExtractConstraints(const PrimExpr& expr, |
| bool keep_composite_constraints = true); |
| |
| /* \brief Returns components that are false if the expression is false. |
| * |
| * Utility to break up a boolean expression into independent |
| * components. |
| * |
| * Example: `i==5 || j==3` => `[i==5, j==3]` |
| * Example: `i==5 && j==3` => `[i==5 && j==3]` |
| * Example: `!(i>5 && j==3)` => `[i<=5, j!=3]` |
| * |
| * Intended for use in bounds analysis or simplification within a |
| * conditional, or identifying independent conditionals that may be |
| * hoisted. |
| * |
| * \param expr The expression to be analyzers |
| * |
| * \returns A vector of independent constraints |
| */ |
| std::vector<PrimExpr> ExtractComponents(const PrimExpr& expr); |
| |
| } // namespace arith |
| } // namespace tvm |
| |
| #endif // TVM_ARITH_CONSTRAINT_EXTRACT_H_ |