| // 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.code; |
| |
| import com.android.tools.r8.graph.GraphLens; |
| import com.android.tools.r8.graph.ObjectToOffsetMapping; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.ir.conversion.IRBuilder; |
| import com.android.tools.r8.ir.conversion.LensCodeRewriterUtils; |
| import com.android.tools.r8.naming.ClassNameMapper; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.structural.CompareToVisitor; |
| import com.android.tools.r8.utils.structural.StructuralSpecification; |
| import java.nio.ShortBuffer; |
| import java.util.Arrays; |
| |
| public class FillArrayDataPayload extends Nop { |
| |
| public final int element_width; |
| public final long size; |
| public final short[] data; |
| |
| private static void specify(StructuralSpecification<FillArrayDataPayload, ?> spec) { |
| spec.withInt(i -> i.element_width).withLong(i -> i.size).withShortArray(i -> i.data); |
| } |
| |
| FillArrayDataPayload(int high, BytecodeStream stream) { |
| super(high, stream); |
| element_width = read16BitValue(stream); |
| size = read32BitValue(stream); |
| assert size * element_width < Integer.MAX_VALUE; |
| // Read the data as shorts (which is faster than reading bytes) as they are always 2-byte |
| // aligned and the size is 2-byte aligned as well. |
| int numberOfShorts = (int) (size * element_width + 1) / 2; |
| data = new short[numberOfShorts]; |
| for (int i = 0; i < data.length; i++) { |
| data[i] = readSigned16BitValue(stream); |
| } |
| } |
| |
| public FillArrayDataPayload(int element_width, long size, short[] data) { |
| this.element_width = element_width; |
| this.size = size; |
| this.data = data; |
| } |
| |
| @Override |
| public boolean isPayload() { |
| return true; |
| } |
| |
| @Override |
| public void write( |
| ShortBuffer dest, |
| ProgramMethod context, |
| GraphLens graphLens, |
| ObjectToOffsetMapping mapping, |
| LensCodeRewriterUtils rewriter) { |
| writeFirst(3, dest); // Pseudo-opcode = 0x0300 |
| write16BitValue(element_width, dest); |
| write32BitValue(size, dest); |
| for (short datum : data) { |
| write16BitValue(datum, dest); |
| } |
| } |
| |
| @Override |
| final int internalAcceptCompareTo(Instruction other, CompareToVisitor visitor) { |
| return visitor.visit(this, (FillArrayDataPayload) other, FillArrayDataPayload::specify); |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = super.hashCode(); |
| result = 31 * result + element_width; |
| result = 31 * result + (int) (size ^ (size >>> 32)); |
| result = 31 * result + Arrays.hashCode(data); |
| return result; |
| } |
| |
| @Override |
| public int getSize() { |
| return 4 + data.length; |
| } |
| |
| @Override |
| public String toString(ClassNameMapper naming) { |
| return super.toString(naming) + "[FillArrayPayload], " + |
| "width: " + element_width + ", size: " + size; |
| } |
| |
| @Override |
| public String toSmaliString(ClassNameMapper naming) { |
| StringBuilder builder = new StringBuilder(); |
| builder.append(" "); |
| builder.append(".array-data "); |
| builder.append(StringUtils.hexString(element_width, 1)); |
| builder.append(" # "); |
| builder.append(element_width); |
| builder.append("\n"); |
| if (element_width == 1) { |
| // For element width 1 split the 16-bit data units into bytes. |
| for (int i = 0; i < data.length; i++) { |
| for (int j = 0; j < 2; j++) { |
| int value = (data[i] >> (j * 8)) & 0xff; |
| if (i * 2 + j < size) { |
| builder.append(" "); |
| builder.append(StringUtils.hexString(value, 2)); |
| builder.append(" # "); |
| builder.append(value); |
| builder.append("\n"); |
| } |
| } |
| } |
| } else { |
| // For element width > 1 combine the 16-bit data units into 16-bit/32-bit or 64-bit values. |
| assert element_width == 2 || element_width == 4 || element_width == 8; |
| long value = 0; |
| for (int i = 0; i < data.length; i++) { |
| value = (Short.toUnsignedLong(data[i]) << (16 * (i % (element_width / 2)))) | value; |
| if ((((i + 1) * 2) % element_width) == 0) { |
| builder.append(" "); |
| builder.append(StringUtils.hexString(value, element_width * 2)); |
| builder.append(" # "); |
| builder.append(value); |
| builder.append("\n"); |
| value = 0; |
| } |
| } |
| } |
| builder.append(" "); |
| builder.append(".end array-data"); |
| return builder.toString(); |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder) { |
| // FilledArrayData payloads are not represented in the IR. |
| } |
| } |