| // 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.CfFieldInstruction; |
| import com.android.tools.r8.code.Iput; |
| import com.android.tools.r8.code.IputBoolean; |
| import com.android.tools.r8.code.IputByte; |
| import com.android.tools.r8.code.IputChar; |
| import com.android.tools.r8.code.IputObject; |
| import com.android.tools.r8.code.IputShort; |
| import com.android.tools.r8.code.IputWide; |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.DexField; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexType; |
| 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.Arrays; |
| import org.objectweb.asm.Opcodes; |
| |
| public class InstancePut extends FieldInstruction { |
| |
| public InstancePut(DexField field, Value object, Value value) { |
| super(field, null, Arrays.asList(object, value)); |
| assert object().verifyCompatible(ValueType.OBJECT); |
| assert value().verifyCompatible(ValueType.fromDexType(field.type)); |
| } |
| |
| public Value object() { |
| return inValues.get(0); |
| } |
| |
| public Value value() { |
| return inValues.get(1); |
| } |
| |
| @Override |
| public void buildDex(DexBuilder builder) { |
| com.android.tools.r8.code.Instruction instruction; |
| int valueRegister = builder.allocatedRegister(value(), getNumber()); |
| int objectRegister = builder.allocatedRegister(object(), getNumber()); |
| DexField field = getField(); |
| switch (getType()) { |
| case INT: |
| case FLOAT: |
| instruction = new Iput(valueRegister, objectRegister, field); |
| break; |
| case LONG: |
| case DOUBLE: |
| instruction = new IputWide(valueRegister, objectRegister, field); |
| break; |
| case OBJECT: |
| instruction = new IputObject(valueRegister, objectRegister, field); |
| break; |
| case BOOLEAN: |
| instruction = new IputBoolean(valueRegister, objectRegister, field); |
| break; |
| case BYTE: |
| instruction = new IputByte(valueRegister, objectRegister, field); |
| break; |
| case CHAR: |
| instruction = new IputChar(valueRegister, objectRegister, field); |
| break; |
| case SHORT: |
| instruction = new IputShort(valueRegister, objectRegister, field); |
| break; |
| case INT_OR_FLOAT: |
| case LONG_OR_DOUBLE: |
| throw new Unreachable("Unexpected imprecise type: " + getType()); |
| default: |
| throw new Unreachable("Unexpected type: " + getType()); |
| } |
| builder.add(this, instruction); |
| } |
| |
| @Override |
| public boolean instructionTypeCanThrow() { |
| return true; |
| } |
| |
| @Override |
| public boolean identicalNonValueNonPositionParts(Instruction other) { |
| if (!other.isInstancePut()) { |
| return false; |
| } |
| InstancePut o = other.asInstancePut(); |
| return o.getField() == getField() && o.getType() == getType(); |
| } |
| |
| @Override |
| public int maxInValueRegister() { |
| return Constants.U4BIT_MAX; |
| } |
| |
| @Override |
| public int maxOutValueRegister() { |
| assert false : "InstancePut instructions define no values."; |
| return 0; |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, DexType invocationContext) { |
| return inliningConstraints.forInstancePut(getField(), invocationContext); |
| } |
| |
| @Override |
| public boolean isInstancePut() { |
| return true; |
| } |
| |
| @Override |
| public InstancePut asInstancePut() { |
| return this; |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + "; field: " + getField().toSourceString(); |
| } |
| |
| @Override |
| public void insertLoadAndStores(InstructionListIterator it, LoadStoreHelper helper) { |
| helper.loadInValues(this, it); |
| } |
| |
| @Override |
| public void buildCf(CfBuilder builder) { |
| builder.add( |
| new CfFieldInstruction(Opcodes.PUTFIELD, getField(), builder.resolveField(getField()))); |
| } |
| |
| @Override |
| public boolean throwsNpeIfValueIsNull(Value value, DexItemFactory dexItemFactory) { |
| return object() == value; |
| } |
| } |