1/* 2 * Copyright (c) 2024-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import { Value } from '../base/Value'; 17import { ArkAssignStmt, Stmt } from '../base/Stmt'; 18import { IRUtils } from './IRUtils'; 19 20/** 21 * Replace old def(Value) of a Stmt inplace 22 */ 23export class StmtDefReplacer { 24 private oldDef: Value; 25 private newDef: Value; 26 27 constructor(oldDef: Value, newDef: Value) { 28 this.oldDef = oldDef; 29 this.newDef = newDef; 30 } 31 32 public caseStmt(stmt: Stmt): void { 33 if (stmt instanceof ArkAssignStmt) { 34 this.caseAssignStmt(stmt); 35 } 36 } 37 38 private caseAssignStmt(stmt: ArkAssignStmt): void { 39 const lValue = stmt.getLeftOp(); 40 if (lValue === this.oldDef) { 41 IRUtils.adjustOperandOriginalPositions(stmt, this.oldDef, this.newDef); 42 stmt.setLeftOp(this.newDef); 43 } 44 } 45} 46