| // 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.AppView; |
| import com.android.tools.r8.graph.CfCompareHelper; |
| import com.android.tools.r8.graph.DexClassAndMethod; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexMethodHandle; |
| 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.graph.UseRegistry; |
| import com.android.tools.r8.graph.UseRegistry.MethodHandleUse; |
| 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 org.objectweb.asm.MethodVisitor; |
| |
| public class CfConstMethodHandle extends CfInstruction { |
| |
| private final DexMethodHandle handle; |
| |
| public CfConstMethodHandle(DexMethodHandle handle) { |
| this.handle = handle; |
| } |
| |
| public DexMethodHandle getHandle() { |
| return handle; |
| } |
| |
| @Override |
| public int getCompareToId() { |
| return CfCompareHelper.CONST_METHOD_HANDLE_COMPARE_ID; |
| } |
| |
| @Override |
| public int internalCompareTo(CfInstruction other, CfCompareHelper helper) { |
| return handle.slowCompareTo(((CfConstMethodHandle) other).handle); |
| } |
| |
| @Override |
| public void write( |
| AppView<?> appView, |
| ProgramMethod context, |
| DexItemFactory dexItemFactory, |
| GraphLens graphLens, |
| InitClassLens initClassLens, |
| NamingLens namingLens, |
| LensCodeRewriterUtils rewriter, |
| MethodVisitor visitor) { |
| DexMethodHandle rewrittenHandle = |
| rewriter.rewriteDexMethodHandle( |
| handle, MethodHandleUse.NOT_ARGUMENT_TO_LAMBDA_METAFACTORY, context); |
| visitor.visitLdcInsn(rewrittenHandle.toAsmHandle(namingLens)); |
| } |
| |
| @Override |
| public void print(CfPrinter printer) { |
| printer.print(this); |
| } |
| |
| @Override |
| void internalRegisterUse(UseRegistry registry, DexClassAndMethod context) { |
| registry.registerMethodHandle(handle, MethodHandleUse.NOT_ARGUMENT_TO_LAMBDA_METAFACTORY); |
| } |
| |
| @Override |
| public boolean canThrow() { |
| // const-class and const-string* may throw in dex. |
| return true; |
| } |
| |
| @Override |
| public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) { |
| builder.addConstMethodHandle( |
| state.push(builder.appView.dexItemFactory().methodHandleType).register, handle); |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, ProgramMethod context) { |
| return inliningConstraints.forConstMethodHandle(); |
| } |
| |
| @Override |
| public void evaluate( |
| CfFrameVerificationHelper frameBuilder, |
| DexType context, |
| DexType returnType, |
| DexItemFactory factory, |
| InitClassLens initClassLens) { |
| // ... → |
| // ..., value |
| frameBuilder.push(factory.methodHandleType); |
| } |
| } |