| // 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.code.XorInt; |
| import com.android.tools.r8.code.XorInt2Addr; |
| import com.android.tools.r8.code.XorIntLit16; |
| import com.android.tools.r8.code.XorIntLit8; |
| import com.android.tools.r8.code.XorLong; |
| import com.android.tools.r8.code.XorLong2Addr; |
| import org.objectweb.asm.Opcodes; |
| |
| public class Xor extends LogicalBinop { |
| |
| public Xor(NumericType type, Value dest, Value left, Value right) { |
| super(type, dest, left, right); |
| } |
| |
| @Override |
| public boolean isXor() { |
| return true; |
| } |
| |
| @Override |
| public Xor asXor() { |
| return this; |
| } |
| |
| @Override |
| public boolean isCommutative() { |
| return true; |
| } |
| |
| @Override |
| public com.android.tools.r8.code.Instruction CreateInt(int dest, int left, int right) { |
| return new XorInt(dest, left, right); |
| } |
| |
| @Override |
| public com.android.tools.r8.code.Instruction CreateLong(int dest, int left, int right) { |
| // The dalvik jit had a bug where the long operations add, sub, or, xor and and would write |
| // the first part of the result long before reading the second part of the input longs. |
| // Therefore, there can be no overlap of the second part of an input long and the first |
| // part of the output long. |
| assert dest != left + 1; |
| assert dest != right + 1; |
| return new XorLong(dest, left, right); |
| } |
| |
| @Override |
| public com.android.tools.r8.code.Instruction CreateInt2Addr(int left, int right) { |
| return new XorInt2Addr(left, right); |
| } |
| |
| @Override |
| public com.android.tools.r8.code.Instruction CreateLong2Addr(int left, int right) { |
| return new XorLong2Addr(left, right); |
| } |
| |
| @Override |
| public com.android.tools.r8.code.Instruction CreateIntLit8(int dest, int left, int constant) { |
| return new XorIntLit8(dest, left, constant); |
| } |
| |
| @Override |
| public com.android.tools.r8.code.Instruction CreateIntLit16(int dest, int left, int constant) { |
| return new XorIntLit16(dest, left, constant); |
| } |
| |
| @Override |
| public boolean identicalNonValueNonPositionParts(Instruction other) { |
| return other.asXor().type == type; |
| } |
| |
| @Override |
| public int compareNonValueParts(Instruction other) { |
| return type.ordinal() - other.asXor().type.ordinal(); |
| } |
| |
| @Override |
| int foldIntegers(int left, int right) { |
| return left ^ right; |
| } |
| |
| @Override |
| long foldLongs(long left, long right) { |
| return left ^ right; |
| } |
| |
| @Override |
| int getCfOpcode() { |
| return type.isWide() ? Opcodes.LXOR : Opcodes.IXOR; |
| } |
| } |