| // Copyright (c) 2021, 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.cf.code; |
| |
| import com.android.tools.r8.dex.code.CfOrDexInstanceFieldRead; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.CfCode; |
| import com.android.tools.r8.graph.DexClassAndMethod; |
| import com.android.tools.r8.graph.DexField; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.graph.UseRegistry; |
| import com.android.tools.r8.ir.conversion.CfSourceCode; |
| import com.android.tools.r8.ir.conversion.CfState; |
| import com.android.tools.r8.ir.conversion.CfState.Slot; |
| import com.android.tools.r8.ir.conversion.IRBuilder; |
| import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget; |
| import com.android.tools.r8.ir.optimize.InliningConstraints; |
| import com.android.tools.r8.optimize.interfaces.analysis.CfAnalysisConfig; |
| import com.android.tools.r8.optimize.interfaces.analysis.CfFrameState; |
| import java.util.ListIterator; |
| import org.objectweb.asm.Opcodes; |
| |
| public class CfInstanceFieldRead extends CfFieldInstruction implements CfOrDexInstanceFieldRead { |
| |
| public CfInstanceFieldRead(DexField field) { |
| this(field, field); |
| } |
| |
| public CfInstanceFieldRead(DexField field, DexField declaringField) { |
| super(field, declaringField); |
| } |
| |
| @Override |
| public int getOpcode() { |
| return Opcodes.GETFIELD; |
| } |
| |
| @Override |
| public boolean isFieldGet() { |
| return true; |
| } |
| |
| @Override |
| public CfFieldInstruction createWithField(DexField otherField) { |
| return new CfInstanceFieldRead(otherField); |
| } |
| |
| @Override |
| void internalRegisterUse( |
| UseRegistry<?> registry, DexClassAndMethod context, ListIterator<CfInstruction> iterator) { |
| registry.registerInstanceFieldReadInstruction(this); |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) { |
| Slot object = state.pop(); |
| builder.addInstanceGet(state.push(getField().getType()).register, object.register, getField()); |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, CfCode code, ProgramMethod context) { |
| return inliningConstraints.forInstanceGet(getField(), context); |
| } |
| |
| @Override |
| public CfFrameState evaluate(CfFrameState frame, AppView<?> appView, CfAnalysisConfig config) { |
| // ..., objectref → |
| // ..., value |
| return frame |
| .popInitialized(appView, config, getField().getHolderType()) |
| .push(config, getField().getType()); |
| } |
| } |