| // Copyright (c) 2018, 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.graph.DexProgramClass; |
| import com.android.tools.r8.graph.InitClassLens; |
| import com.android.tools.r8.ir.code.Monitor.Type; |
| import com.android.tools.r8.ir.conversion.CfSourceCode; |
| import com.android.tools.r8.ir.conversion.CfState; |
| import com.android.tools.r8.ir.conversion.CfState.Slot; |
| import com.android.tools.r8.ir.conversion.IRBuilder; |
| 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 org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| public class CfMonitor extends CfInstruction { |
| |
| private final Type type; |
| |
| public CfMonitor(Type type) { |
| this.type = type; |
| } |
| |
| public Type getType() { |
| return type; |
| } |
| |
| @Override |
| public void write(MethodVisitor visitor, InitClassLens initClassLens, NamingLens lens) { |
| visitor.visitInsn(type == Type.ENTER ? Opcodes.MONITORENTER : Opcodes.MONITOREXIT); |
| } |
| |
| @Override |
| public void print(CfPrinter printer) { |
| printer.print(this); |
| } |
| |
| @Override |
| public boolean canThrow() { |
| return true; |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) { |
| Slot object = state.pop(); |
| builder.addMonitor(type, object.register); |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, DexProgramClass context) { |
| return inliningConstraints.forMonitor(); |
| } |
| } |