| // 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.code.FillArrayData; |
| import com.android.tools.r8.code.FillArrayDataPayload; |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.ProgramMethod; |
| 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; |
| |
| public class NewArrayFilledData extends Instruction { |
| private static final String ERROR_MESSAGE = |
| "Conversion from DEX to classfile not supported for NewArrayFilledData"; |
| |
| public final int element_width; |
| public final long size; |
| public final short[] data; |
| |
| // Primitive array with fill-array-data. The type is not known from the original Dex instruction. |
| public NewArrayFilledData(Value src, int element_width, long size, short[] data) { |
| super(null, src); |
| this.element_width = element_width; |
| this.size = size; |
| this.data = data; |
| } |
| |
| @Override |
| public int opcode() { |
| return Opcodes.NEW_ARRAY_FILLED_DATA; |
| } |
| |
| @Override |
| public <T> T accept(InstructionVisitor<T> visitor) { |
| return visitor.visit(this); |
| } |
| |
| public Value src() { |
| return inValues.get(0); |
| } |
| |
| public FillArrayDataPayload createPayload() { |
| return new FillArrayDataPayload(element_width, size, data); |
| } |
| |
| @Override |
| public void buildDex(DexBuilder builder) { |
| int src = builder.allocatedRegister(src(), getNumber()); |
| builder.addFillArrayData(this, new FillArrayData(src)); |
| } |
| |
| @Override |
| public void buildCf(CfBuilder builder) { |
| throw new Unreachable(ERROR_MESSAGE); |
| } |
| |
| @Override |
| public boolean identicalNonValueNonPositionParts(Instruction other) { |
| if (!other.isNewArrayFilledData()) { |
| return false; |
| } |
| NewArrayFilledData o = other.asNewArrayFilledData(); |
| return o.element_width == element_width |
| && o.size == size |
| && Arrays.equals(o.data, data); |
| } |
| |
| @Override |
| public int maxInValueRegister() { |
| return Constants.U8BIT_MAX; |
| } |
| |
| @Override |
| public int maxOutValueRegister() { |
| assert false : "NewArrayFilledData defines no values."; |
| return 0; |
| } |
| |
| @Override |
| public boolean instructionTypeCanThrow() { |
| return true; |
| } |
| |
| @Override |
| public boolean isNewArrayFilledData() { |
| return true; |
| } |
| |
| @Override |
| public NewArrayFilledData asNewArrayFilledData() { |
| return this; |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, ProgramMethod context) { |
| return inliningConstraints.forNewArrayFilledData(); |
| } |
| |
| @Override |
| public void insertLoadAndStores(InstructionListIterator it, LoadStoreHelper helper) { |
| throw new Unreachable(ERROR_MESSAGE); |
| } |
| |
| @Override |
| public boolean hasInvariantOutType() { |
| return true; |
| } |
| |
| @Override |
| public boolean instructionInstanceCanThrow(AppView<?> appView, ProgramMethod context) { |
| return appView.options().debug || src().getType().isNullable(); |
| } |
| |
| @Override |
| public boolean instructionMayHaveSideEffects( |
| AppView<?> appView, ProgramMethod context, SideEffectAssumption assumption) { |
| // Treat the instruction as possibly having side-effects if it may throw or the array is used. |
| if (instructionInstanceCanThrow(appView, context) || src().numberOfAllUsers() > 1) { |
| return true; |
| } |
| |
| assert src().singleUniqueUser() == this; |
| assert !src().isPhi(); |
| assert src().definition.isNewArrayEmpty(); |
| |
| return false; |
| } |
| |
| @Override |
| public boolean instructionMayTriggerMethodInvocation(AppView<?> appView, ProgramMethod context) { |
| return false; |
| } |
| } |