| // Copyright (c) 2019, 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.desugar.backports; |
| |
| import com.android.tools.r8.cf.code.CfInstruction; |
| import com.android.tools.r8.cf.code.CfInvoke; |
| import com.android.tools.r8.cf.code.CfStackInstruction; |
| import com.android.tools.r8.cf.code.CfStackInstruction.Opcode; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.ir.desugar.BackportedMethodRewriter.FullMethodInvokeRewriter; |
| import com.android.tools.r8.ir.desugar.BackportedMethodRewriter.MethodInvokeRewriter; |
| import com.android.tools.r8.ir.desugar.LocalStackAllocator; |
| import com.google.common.collect.ImmutableList; |
| import java.util.Collection; |
| import org.objectweb.asm.Opcodes; |
| |
| public final class ObjectsMethodRewrites { |
| |
| public static MethodInvokeRewriter rewriteToArraysHashCode() { |
| return (invoke, factory) -> { |
| DexType arraysType = factory.createType(factory.arraysDescriptor); |
| return new CfInvoke( |
| Opcodes.INVOKESTATIC, |
| factory.createMethod(arraysType, invoke.getMethod().proto, "hashCode"), |
| false); |
| }; |
| } |
| |
| public static MethodInvokeRewriter rewriteRequireNonNull() { |
| return new FullMethodInvokeRewriter() { |
| |
| @Override |
| public Collection<CfInstruction> rewrite( |
| CfInvoke invoke, DexItemFactory factory, LocalStackAllocator localStackAllocator) { |
| // requireNonNull returns the operand, so dup top-of-stack, do getClass and pop the class. |
| localStackAllocator.allocateLocalStack(1); |
| return ImmutableList.of( |
| new CfStackInstruction(Opcode.Dup), |
| new CfInvoke(Opcodes.INVOKEVIRTUAL, factory.objectMembers.getClass, false), |
| new CfStackInstruction(Opcode.Pop)); |
| } |
| }; |
| } |
| } |