| // Copyright (c) 2017, 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.cf.code; |
| |
| import com.android.tools.r8.cf.CfPrinter; |
| import com.android.tools.r8.cf.code.CfFrame.FrameType; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.CfCode; |
| import com.android.tools.r8.graph.CfCompareHelper; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.graph.GraphLens; |
| import com.android.tools.r8.graph.InitClassLens; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.ir.code.NumericType; |
| import com.android.tools.r8.ir.code.ValueType; |
| import com.android.tools.r8.ir.conversion.CfSourceCode; |
| import com.android.tools.r8.ir.conversion.CfState; |
| import com.android.tools.r8.ir.conversion.IRBuilder; |
| import com.android.tools.r8.ir.conversion.LensCodeRewriterUtils; |
| import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget; |
| import com.android.tools.r8.ir.optimize.InliningConstraints; |
| import com.android.tools.r8.naming.NamingLens; |
| import com.android.tools.r8.utils.structural.CompareToVisitor; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| public class CfNeg extends CfInstruction { |
| |
| private final NumericType type; |
| |
| public CfNeg(NumericType type) { |
| this.type = type; |
| } |
| |
| public NumericType getType() { |
| return type; |
| } |
| |
| @Override |
| public int getCompareToId() { |
| return getAsmOpcode(); |
| } |
| |
| @Override |
| public int internalAcceptCompareTo( |
| CfInstruction other, CompareToVisitor visitor, CfCompareHelper helper) { |
| return CfCompareHelper.compareIdUniquelyDeterminesEquality(this, other); |
| } |
| |
| @Override |
| public void write( |
| AppView<?> appView, |
| ProgramMethod context, |
| DexItemFactory dexItemFactory, |
| GraphLens graphLens, |
| InitClassLens initClassLens, |
| NamingLens namingLens, |
| LensCodeRewriterUtils rewriter, |
| MethodVisitor visitor) { |
| visitor.visitInsn(getAsmOpcode()); |
| } |
| |
| @Override |
| public void print(CfPrinter printer) { |
| printer.print(this); |
| } |
| |
| public int getAsmOpcode() { |
| switch (type) { |
| case BYTE: |
| case CHAR: |
| case SHORT: |
| case INT: |
| return Opcodes.INEG; |
| case LONG: |
| return Opcodes.LNEG; |
| case FLOAT: |
| return Opcodes.FNEG; |
| case DOUBLE: |
| return Opcodes.DNEG; |
| default: |
| throw new Unreachable("Invalid type for CfNeg " + type); |
| } |
| } |
| |
| public static CfNeg fromAsm(int opcode) { |
| switch (opcode) { |
| case Opcodes.INEG: |
| return new CfNeg(NumericType.INT); |
| case Opcodes.LNEG: |
| return new CfNeg(NumericType.LONG); |
| case Opcodes.FNEG: |
| return new CfNeg(NumericType.FLOAT); |
| case Opcodes.DNEG: |
| return new CfNeg(NumericType.DOUBLE); |
| default: |
| throw new Unreachable("Invalid opcode for CfNeg " + opcode); |
| } |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) { |
| int value = state.pop().register; |
| builder.addNeg(type, state.push(ValueType.fromNumericType(type)).register, value); |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, CfCode code, ProgramMethod context) { |
| return inliningConstraints.forUnop(); |
| } |
| |
| @Override |
| public void evaluate( |
| CfFrameVerificationHelper frameBuilder, |
| DexType context, |
| DexType returnType, |
| DexItemFactory factory, |
| InitClassLens initClassLens) { |
| // ..., value → |
| // ..., result |
| FrameType frameType = FrameType.fromNumericType(type, factory); |
| frameBuilder.popAndDiscard(frameType).push(frameType); |
| } |
| } |