| // Copyright (c) 2016, 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.code; |
| |
| import com.android.tools.r8.cf.LoadStoreHelper; |
| import com.android.tools.r8.cf.code.CfInstanceOf; |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.ir.analysis.type.TypeElement; |
| import com.android.tools.r8.ir.conversion.CfBuilder; |
| import com.android.tools.r8.ir.conversion.DexBuilder; |
| import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget; |
| import com.android.tools.r8.ir.optimize.InliningConstraints; |
| import java.util.Set; |
| |
| public class InstanceOf extends Instruction { |
| |
| private final DexType type; |
| |
| public InstanceOf(Value dest, Value value, DexType type) { |
| super(dest, value); |
| this.type = type; |
| } |
| |
| @Override |
| public int opcode() { |
| return Opcodes.INSTANCE_OF; |
| } |
| |
| @Override |
| public <T> T accept(InstructionVisitor<T> visitor) { |
| return visitor.visit(this); |
| } |
| |
| public DexType type() { |
| return type; |
| } |
| |
| public Value dest() { |
| return outValue; |
| } |
| |
| public Value value() { |
| return inValues.get(0); |
| } |
| |
| @Override |
| public void buildDex(DexBuilder builder) { |
| int dest = builder.allocatedRegister(dest(), getNumber()); |
| int value = builder.allocatedRegister(value(), getNumber()); |
| builder.addInstanceOf(this, new com.android.tools.r8.code.InstanceOf(dest, value, type)); |
| } |
| |
| @Override |
| public int maxInValueRegister() { |
| return Constants.U4BIT_MAX; |
| } |
| |
| @Override |
| public int maxOutValueRegister() { |
| return Constants.U4BIT_MAX; |
| } |
| |
| @Override |
| public boolean instructionTypeCanThrow() { |
| return true; |
| } |
| |
| @Override |
| public boolean identicalNonValueNonPositionParts(Instruction other) { |
| return other.isInstanceOf() && other.asInstanceOf().type == type; |
| } |
| |
| @Override |
| public boolean isInstanceOf() { |
| return true; |
| } |
| |
| @Override |
| public InstanceOf asInstanceOf() { |
| return this; |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, ProgramMethod context) { |
| return inliningConstraints.forInstanceOf(type, context); |
| } |
| |
| @Override |
| public TypeElement evaluate(AppView<?> appView) { |
| return TypeElement.getInt(); |
| } |
| |
| @Override |
| public boolean hasInvariantOutType() { |
| return true; |
| } |
| |
| @Override |
| public void insertLoadAndStores(InstructionListIterator it, LoadStoreHelper helper) { |
| helper.loadInValues(this, it); |
| helper.storeOutValue(this, it); |
| } |
| |
| @Override |
| public void buildCf(CfBuilder builder) { |
| builder.add(new CfInstanceOf(type)); |
| } |
| |
| @Override |
| public boolean outTypeKnownToBeBoolean(Set<Phi> seen) { |
| return true; |
| } |
| |
| @Override |
| public boolean instructionMayTriggerMethodInvocation(AppView<?> appView, ProgramMethod context) { |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder builder = new StringBuilder(super.toString()); |
| return builder.append("; ").append(type.toSourceString()).toString(); |
| } |
| } |