| // 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.dex.Constants; |
| import com.android.tools.r8.dex.IndexedItemCollection; |
| 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.LensCodeRewriterUtils; |
| import com.android.tools.r8.naming.ClassNameMapper; |
| import com.android.tools.r8.utils.ComparatorUtils; |
| import java.nio.ShortBuffer; |
| |
| abstract class Format11n extends Base1Format { |
| |
| public final byte A, B; |
| |
| // #+B | vA | op |
| /*package*/ Format11n(int high, BytecodeStream stream) { |
| super(stream); |
| A = (byte) (high & 0xf); |
| // Sign extend 4bit value. |
| high >>= 4; |
| if ((high & Constants.S4BIT_SIGN_MASK) != 0) { |
| B = (byte) (~(~high & 0xf)); |
| } else { |
| B = (byte) (high & 0xf); |
| } |
| } |
| |
| /*package*/ Format11n(int A, int B) { |
| assert 0 <= A && A <= Constants.U4BIT_MAX; |
| assert Constants.S4BIT_MIN <= B && B <= Constants.S4BIT_MAX; |
| this.A = (byte) A; |
| this.B = (byte) B; |
| } |
| |
| @Override |
| public void write( |
| ShortBuffer dest, |
| ProgramMethod context, |
| GraphLens graphLens, |
| ObjectToOffsetMapping mapping, |
| LensCodeRewriterUtils rewriter) { |
| writeFirst(B, A, dest); |
| } |
| |
| @Override |
| public final int hashCode() { |
| return ((A << 4) | B) ^ getClass().hashCode(); |
| } |
| |
| @Override |
| final int internalCompareTo(Instruction other) { |
| Format11n o = (Format11n) other; |
| return ComparatorUtils.compareInts(A, o.A, B, o.B); |
| } |
| |
| @Override |
| public String toString(ClassNameMapper naming) { |
| return formatString("v" + A + ", #" + B); |
| } |
| |
| @Override |
| public void collectIndexedItems( |
| IndexedItemCollection indexedItems, |
| ProgramMethod context, |
| GraphLens graphLens, |
| LensCodeRewriterUtils rewriter) { |
| // No references. |
| } |
| } |