1 // Copyright (c) 2016, the R8 project authors. Please see the AUTHORS file 2 // for details. All rights reserved. Use of this source code is governed by a 3 // BSD-style license that can be found in the LICENSE file. 4 package com.android.tools.r8.ir.code; 5 6 import com.android.tools.r8.code.FillArrayData; 7 import com.android.tools.r8.code.FillArrayDataPayload; 8 import com.android.tools.r8.dex.Constants; 9 import com.android.tools.r8.ir.conversion.DexBuilder; 10 import com.android.tools.r8.utils.InternalOptions; 11 import java.util.Arrays; 12 13 public class NewArrayFilledData extends Instruction { 14 15 public final int element_width; 16 public final long size; 17 public final short[] data; 18 19 // Primitive array with fill-array-data. The type is not known from the original Dex instruction. NewArrayFilledData(Value src, int element_width, long size, short[] data)20 public NewArrayFilledData(Value src, int element_width, long size, short[] data) { 21 super(null, src); 22 this.element_width = element_width; 23 this.size = size; 24 this.data = data; 25 } 26 src()27 public Value src() { 28 return inValues.get(0); 29 } 30 createPayload()31 public FillArrayDataPayload createPayload() { 32 return new FillArrayDataPayload(element_width, size, data); 33 } 34 35 @Override buildDex(DexBuilder builder)36 public void buildDex(DexBuilder builder) { 37 int src = builder.allocatedRegister(src(), getNumber()); 38 builder.addFillArrayData(this, new FillArrayData(src)); 39 } 40 41 @Override identicalNonValueParts(Instruction other)42 public boolean identicalNonValueParts(Instruction other) { 43 NewArrayFilledData o = other.asNewArrayFilledData(); 44 return o.element_width == element_width 45 && o.size == size 46 && Arrays.equals(o.data, data); 47 } 48 49 @Override compareNonValueParts(Instruction other)50 public int compareNonValueParts(Instruction other) { 51 NewArrayFilledData o = other.asNewArrayFilledData(); 52 int result; 53 result = element_width - o.element_width; 54 if (result != 0) { 55 return result; 56 } 57 result = Long.signum(size - o.size); 58 if (result != 0) { 59 return result; 60 } 61 assert data.length == o.data.length; 62 for (int i = 0; i < data.length; i++) { 63 result = data[i] - o.data[i]; 64 if (result != 0) { 65 return result; 66 } 67 } 68 return 0; 69 } 70 71 @Override maxInValueRegister()72 public int maxInValueRegister() { 73 return Constants.U8BIT_MAX; 74 } 75 76 @Override maxOutValueRegister()77 public int maxOutValueRegister() { 78 assert false : "NewArrayFilledData defines no values."; 79 return 0; 80 } 81 82 @Override canBeDeadCode(IRCode code, InternalOptions options)83 public boolean canBeDeadCode(IRCode code, InternalOptions options) { 84 // Side-effects its input values. 85 return false; 86 } 87 88 @Override isNewArrayFilledData()89 public boolean isNewArrayFilledData() { 90 return true; 91 } 92 93 @Override asNewArrayFilledData()94 public NewArrayFilledData asNewArrayFilledData() { 95 return this; 96 } 97 } 98