| // Copyright (c) 2023, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.ir.optimize.library; |
| |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexClassAndMethod; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexMethod; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.ir.code.BasicBlock; |
| import com.android.tools.r8.ir.code.BasicBlockIterator; |
| import com.android.tools.r8.ir.code.IRCode; |
| import com.android.tools.r8.ir.code.InstructionListIterator; |
| import com.android.tools.r8.ir.code.InvokeMethod; |
| import com.android.tools.r8.ir.optimize.AffectedValues; |
| import com.android.tools.r8.utils.InternalOptions; |
| import java.util.Set; |
| |
| public class MethodOptimizer extends StatelessLibraryMethodModelCollection { |
| |
| private final InternalOptions options; |
| private final DexItemFactory dexItemFactory; |
| private final DexMethod invoke; |
| |
| MethodOptimizer(AppView<?> appView) { |
| DexItemFactory dexItemFactory = appView.dexItemFactory(); |
| this.options = appView.options(); |
| this.dexItemFactory = dexItemFactory; |
| invoke = dexItemFactory.methodMethods.invoke; |
| } |
| |
| @Override |
| public DexType getType() { |
| return dexItemFactory.methodType; |
| } |
| |
| @Override |
| @SuppressWarnings("ReferenceEquality") |
| public InstructionListIterator optimize( |
| IRCode code, |
| BasicBlockIterator blockIterator, |
| InstructionListIterator instructionIterator, |
| InvokeMethod invoke, |
| DexClassAndMethod singleTarget, |
| AffectedValues affectedValues, |
| Set<BasicBlock> blocksToRemove) { |
| DexMethod singleTargetReference = singleTarget.getReference(); |
| if (singleTargetReference.isIdenticalTo(this.invoke)) { |
| EmptyVarargsUtil.replaceWithNullIfEmptyArray( |
| invoke.getArgument(2), code, instructionIterator, options, affectedValues); |
| assert instructionIterator.peekPrevious() == invoke; |
| } |
| return instructionIterator; |
| } |
| } |