| /* |
| * 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/arithmetic/ir_visitor_with_analyzer.h |
| * \brief IR visitor class with an analyzer context. |
| */ |
| |
| #ifndef TVM_ARITH_IR_VISITOR_WITH_ANALYZER_H_ |
| #define TVM_ARITH_IR_VISITOR_WITH_ANALYZER_H_ |
| |
| #include <tvm/arith/analyzer.h> |
| #include <tvm/tir/expr.h> |
| #include <tvm/tir/stmt_functor.h> |
| |
| namespace tvm { |
| namespace tir { |
| |
| class IRVisitorWithAnalyzer final : public StmtExprVisitor { |
| public: |
| PrimExpr Simplify(const PrimExpr& expr) { return analyzer_.Simplify(expr); } |
| |
| void VisitStmt_(const ForNode* op) { |
| analyzer_.Bind(op->loop_var, Range::FromMinExtent(op->min, op->extent)); |
| return StmtExprVisitor::VisitStmt_(op); |
| } |
| |
| void VisitStmt_(const AttrStmtNode* op) { |
| if (op->attr_key == attr::thread_extent || op->attr_key == attr::virtual_thread) { |
| IterVar iv = Downcast<IterVar>(op->node); |
| CHECK_NE(iv->thread_tag.length(), 0U); |
| analyzer_.Bind(iv->var, Range::FromMinExtent(0, op->value)); |
| StmtExprVisitor::VisitStmt_(op); |
| } else { |
| StmtExprVisitor::VisitStmt_(op); |
| } |
| } |
| |
| void VisitExpr_(const ReduceNode* op) { |
| // Setup the domain information before simplification. |
| for (const IterVar& iv : op->axis) { |
| analyzer_.Bind(iv->var, iv->dom); |
| } |
| // Recursively call simplification when necessary. |
| StmtExprVisitor::VisitExpr_(op); |
| } |
| |
| protected: |
| /*! \brief internal analyzer field. */ |
| arith::Analyzer analyzer_; |
| }; |
| |
| } // namespace tir |
| } // namespace tvm |
| #endif // TVM_ARITH_IR_VISITOR_WITH_ANALYZER_H_ |