| // 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.TypeVerificationHelper; |
| import com.android.tools.r8.code.NewArray; |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.graph.AppInfoWithSubtyping; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.ir.conversion.DexBuilder; |
| import com.android.tools.r8.ir.optimize.Inliner.Constraint; |
| |
| public class NewArrayEmpty extends Instruction { |
| |
| public final DexType type; |
| |
| public NewArrayEmpty(Value dest, Value size, DexType type) { |
| super(dest, size); |
| dest.markNeverNull(); |
| this.type = type; |
| } |
| |
| public Value dest() { |
| return outValue; |
| } |
| |
| public Value size() { |
| return inValues.get(0); |
| } |
| |
| @Override |
| public void buildDex(DexBuilder builder) { |
| int size = builder.allocatedRegister(size(), getNumber()); |
| int dest = builder.allocatedRegister(dest(), getNumber()); |
| builder.add(this, new NewArray(dest, size, type)); |
| } |
| |
| @Override |
| public int maxInValueRegister() { |
| return Constants.U4BIT_MAX; |
| } |
| |
| @Override |
| public int maxOutValueRegister() { |
| return Constants.U4BIT_MAX; |
| } |
| |
| @Override |
| public boolean instructionTypeCanThrow() { |
| // new-array throws if its size is negative, but can also potentially throw on out-of-memory. |
| return true; |
| } |
| |
| @Override |
| public boolean identicalNonValueNonPositionParts(Instruction other) { |
| return other.asNewArrayEmpty().type == type; |
| } |
| |
| @Override |
| public int compareNonValueParts(Instruction other) { |
| return type.slowCompareTo(other.asNewArrayEmpty().type); |
| } |
| |
| @Override |
| public boolean isNewArrayEmpty() { |
| return true; |
| } |
| |
| @Override |
| public NewArrayEmpty asNewArrayEmpty() { |
| return this; |
| } |
| |
| @Override |
| public Constraint inliningConstraint(AppInfoWithSubtyping info, DexType holder) { |
| return Constraint.classIsVisible(holder, type, info); |
| } |
| |
| @Override |
| public boolean hasInvariantVerificationType() { |
| return true; |
| } |
| |
| @Override |
| public DexType computeVerificationType(TypeVerificationHelper helper) { |
| return type; |
| } |
| } |