Clean-up desugared library code

Change-Id: I6acfee92df99f7c207c76fb3b3d56590b65ecc45
diff --git a/src/main/java/com/android/tools/r8/ir/conversion/IRConverter.java b/src/main/java/com/android/tools/r8/ir/conversion/IRConverter.java
index ecf2f85..664da13 100644
--- a/src/main/java/com/android/tools/r8/ir/conversion/IRConverter.java
+++ b/src/main/java/com/android/tools/r8/ir/conversion/IRConverter.java
@@ -430,8 +430,7 @@
     InterfaceMethodProcessorFacade interfaceDesugaring =
         instructionDesugaring.getInterfaceMethodPostProcessingDesugaringD8(
             ExcludeDexResources, interfaceProcessor);
-    CfPostProcessingDesugaringCollection.create(
-            appView, interfaceDesugaring, instructionDesugaring.getRetargetingInfo())
+    CfPostProcessingDesugaringCollection.create(appView, interfaceDesugaring)
         .postProcessingDesugaring(
             appView.appInfo().classes(), m -> true, eventConsumer, executorService);
     methodProcessor.awaitMethodProcessing();
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/CfInstructionDesugaringCollection.java b/src/main/java/com/android/tools/r8/ir/desugar/CfInstructionDesugaringCollection.java
index de491c7..c457ace 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/CfInstructionDesugaringCollection.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/CfInstructionDesugaringCollection.java
@@ -10,7 +10,6 @@
 import com.android.tools.r8.graph.AppView;
 import com.android.tools.r8.graph.ProgramMethod;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.apiconversion.DesugaredLibraryAPIConverter;
-import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.RetargetingInfo;
 import com.android.tools.r8.ir.desugar.itf.InterfaceMethodProcessorFacade;
 import com.android.tools.r8.ir.desugar.itf.InterfaceMethodRewriter.Flavor;
 import com.android.tools.r8.ir.desugar.itf.InterfaceProcessor;
@@ -81,8 +80,6 @@
   public abstract InterfaceMethodProcessorFacade getInterfaceMethodPostProcessingDesugaringR8(
       Flavor flavor, Predicate<ProgramMethod> isLiveMethod, InterfaceProcessor processor);
 
-  public abstract RetargetingInfo getRetargetingInfo();
-
   public abstract void withDesugaredLibraryAPIConverter(
       Consumer<DesugaredLibraryAPIConverter> consumer);
 }
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/CfPostProcessingDesugaringCollection.java b/src/main/java/com/android/tools/r8/ir/desugar/CfPostProcessingDesugaringCollection.java
index 780e31f..09b456b 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/CfPostProcessingDesugaringCollection.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/CfPostProcessingDesugaringCollection.java
@@ -8,7 +8,6 @@
 import com.android.tools.r8.graph.ProgramMethod;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.apiconversion.DesugaredLibraryAPICallbackSynthesizer;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.DesugaredLibraryRetargeterPostProcessor;
-import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.RetargetingInfo;
 import com.android.tools.r8.ir.desugar.itf.InterfaceMethodProcessorFacade;
 import com.android.tools.r8.ir.desugar.records.RecordDesugaring;
 import java.util.ArrayList;
@@ -21,12 +20,10 @@
 public abstract class CfPostProcessingDesugaringCollection {
 
   public static CfPostProcessingDesugaringCollection create(
-      AppView<?> appView,
-      InterfaceMethodProcessorFacade interfaceMethodProcessorFacade,
-      RetargetingInfo retargetingInfo) {
+      AppView<?> appView, InterfaceMethodProcessorFacade interfaceMethodProcessorFacade) {
     if (appView.options().desugarState.isOn()) {
       return NonEmptyCfPostProcessingDesugaringCollection.create(
-          appView, interfaceMethodProcessorFacade, retargetingInfo);
+          appView, interfaceMethodProcessorFacade);
     }
     return empty();
   }
@@ -53,13 +50,11 @@
     }
 
     public static CfPostProcessingDesugaringCollection create(
-        AppView<?> appView,
-        InterfaceMethodProcessorFacade interfaceMethodProcessorFacade,
-        RetargetingInfo retargetingInfo) {
+        AppView<?> appView, InterfaceMethodProcessorFacade interfaceMethodProcessorFacade) {
       ArrayList<CfPostProcessingDesugaring> desugarings = new ArrayList<>();
       if (appView.options().machineDesugaredLibrarySpecification.hasRetargeting()
           && !appView.options().isDesugaredLibraryCompilation()) {
-        desugarings.add(new DesugaredLibraryRetargeterPostProcessor(appView, retargetingInfo));
+        desugarings.add(new DesugaredLibraryRetargeterPostProcessor(appView));
       }
       if (interfaceMethodProcessorFacade != null) {
         desugarings.add(interfaceMethodProcessorFacade);
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/EmptyCfInstructionDesugaringCollection.java b/src/main/java/com/android/tools/r8/ir/desugar/EmptyCfInstructionDesugaringCollection.java
index 1e4d6f8..e7a1587 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/EmptyCfInstructionDesugaringCollection.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/EmptyCfInstructionDesugaringCollection.java
@@ -8,7 +8,6 @@
 import com.android.tools.r8.contexts.CompilationContext.MethodProcessingContext;
 import com.android.tools.r8.graph.ProgramMethod;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.apiconversion.DesugaredLibraryAPIConverter;
-import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.RetargetingInfo;
 import com.android.tools.r8.ir.desugar.itf.InterfaceMethodProcessorFacade;
 import com.android.tools.r8.ir.desugar.itf.InterfaceMethodRewriter.Flavor;
 import com.android.tools.r8.ir.desugar.itf.InterfaceProcessor;
@@ -89,11 +88,6 @@
   }
 
   @Override
-  public RetargetingInfo getRetargetingInfo() {
-    return null;
-  }
-
-  @Override
   public void withDesugaredLibraryAPIConverter(Consumer<DesugaredLibraryAPIConverter> consumer) {
     // Intentionally empty.
   }
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/NonEmptyCfInstructionDesugaringCollection.java b/src/main/java/com/android/tools/r8/ir/desugar/NonEmptyCfInstructionDesugaringCollection.java
index 2d33ee3..4c51b9f 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/NonEmptyCfInstructionDesugaringCollection.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/NonEmptyCfInstructionDesugaringCollection.java
@@ -18,7 +18,6 @@
 import com.android.tools.r8.ir.desugar.constantdynamic.ConstantDynamicInstructionDesugaring;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.apiconversion.DesugaredLibraryAPIConverter;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.DesugaredLibraryRetargeter;
-import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.RetargetingInfo;
 import com.android.tools.r8.ir.desugar.icce.AlwaysThrowingInstructionDesugaring;
 import com.android.tools.r8.ir.desugar.invokespecial.InvokeSpecialToSelfDesugaring;
 import com.android.tools.r8.ir.desugar.itf.InterfaceMethodProcessorFacade;
@@ -405,14 +404,6 @@
   }
 
   @Override
-  public RetargetingInfo getRetargetingInfo() {
-    if (desugaredLibraryRetargeter != null) {
-      return desugaredLibraryRetargeter.getRetargetingInfo();
-    }
-    return null;
-  }
-
-  @Override
   public void withDesugaredLibraryAPIConverter(Consumer<DesugaredLibraryAPIConverter> consumer) {
     if (desugaredLibraryAPIConverter != null) {
       consumer.accept(desugaredLibraryAPIConverter);
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeter.java b/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeter.java
index 56167d8..73dd908 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeter.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeter.java
@@ -22,6 +22,7 @@
 import com.android.tools.r8.ir.desugar.FreshLocalProvider;
 import com.android.tools.r8.ir.desugar.LocalStackAllocator;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.machinespecification.EmulatedDispatchMethodDescriptor;
+import com.android.tools.r8.ir.desugar.desugaredlibrary.machinespecification.MachineDesugaredLibrarySpecification;
 import com.android.tools.r8.ir.desugar.desugaredlibrary.retargeter.DesugaredLibraryRetargeterSynthesizerEventConsumer.DesugaredLibraryRetargeterInstructionEventConsumer;
 import java.util.Collection;
 import java.util.Collections;
@@ -35,7 +36,6 @@
   private final AppView<?> appView;
   private final DesugaredLibraryRetargeterSyntheticHelper syntheticHelper;
 
-  private final RetargetingInfo retargetingInfo;
   private final Map<DexMethod, DexMethod> staticRetarget;
   private final Map<DexMethod, DexMethod> nonEmulatedVirtualRetarget;
   private final Map<DexMethod, EmulatedDispatchMethodDescriptor> emulatedVirtualRetarget;
@@ -43,10 +43,11 @@
   public DesugaredLibraryRetargeter(AppView<?> appView) {
     this.appView = appView;
     this.syntheticHelper = new DesugaredLibraryRetargeterSyntheticHelper(appView);
-    retargetingInfo = RetargetingInfo.get(appView);
-    staticRetarget = retargetingInfo.getStaticRetarget();
-    nonEmulatedVirtualRetarget = retargetingInfo.getNonEmulatedVirtualRetarget();
-    emulatedVirtualRetarget = retargetingInfo.getEmulatedVirtualRetarget();
+    MachineDesugaredLibrarySpecification specification =
+        appView.options().machineDesugaredLibrarySpecification;
+    staticRetarget = specification.getStaticRetarget();
+    nonEmulatedVirtualRetarget = specification.getNonEmulatedVirtualRetarget();
+    emulatedVirtualRetarget = specification.getEmulatedVirtualRetarget();
   }
 
   // Used by the ListOfBackportedMethods utility.
@@ -56,10 +57,6 @@
     emulatedVirtualRetarget.keySet().forEach(consumer);
   }
 
-  public RetargetingInfo getRetargetingInfo() {
-    return retargetingInfo;
-  }
-
   @Override
   public Collection<CfInstruction> desugarInstruction(
       CfInstruction instruction,
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeterPostProcessor.java b/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeterPostProcessor.java
index 3d70140..e1447fb 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeterPostProcessor.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/DesugaredLibraryRetargeterPostProcessor.java
@@ -36,11 +36,11 @@
   private final DesugaredLibraryRetargeterSyntheticHelper syntheticHelper;
   private final Map<DexMethod, EmulatedDispatchMethodDescriptor> emulatedDispatchMethods;
 
-  public DesugaredLibraryRetargeterPostProcessor(
-      AppView<?> appView, RetargetingInfo retargetingInfo) {
+  public DesugaredLibraryRetargeterPostProcessor(AppView<?> appView) {
     this.appView = appView;
     this.syntheticHelper = new DesugaredLibraryRetargeterSyntheticHelper(appView);
-    emulatedDispatchMethods = retargetingInfo.getEmulatedVirtualRetarget();
+    emulatedDispatchMethods =
+        appView.options().machineDesugaredLibrarySpecification.getEmulatedVirtualRetarget();
   }
 
   @Override
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/RetargetingInfo.java b/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/RetargetingInfo.java
deleted file mode 100644
index b7ac366..0000000
--- a/src/main/java/com/android/tools/r8/ir/desugar/desugaredlibrary/retargeter/RetargetingInfo.java
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (c) 2021, 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.desugaredlibrary.retargeter;
-
-import com.android.tools.r8.graph.AppView;
-import com.android.tools.r8.graph.DexMethod;
-import com.android.tools.r8.ir.desugar.desugaredlibrary.machinespecification.EmulatedDispatchMethodDescriptor;
-import com.android.tools.r8.ir.desugar.desugaredlibrary.machinespecification.MachineDesugaredLibrarySpecification;
-import java.util.Map;
-
-public class RetargetingInfo {
-
-  private final Map<DexMethod, DexMethod> staticRetarget;
-  private final Map<DexMethod, DexMethod> nonEmulatedVirtualRetarget;
-  private final Map<DexMethod, EmulatedDispatchMethodDescriptor> emulatedVirtualRetarget;
-
-  RetargetingInfo(
-      Map<DexMethod, DexMethod> staticRetarget,
-      Map<DexMethod, DexMethod> nonEmulatedVirtualRetarget,
-      Map<DexMethod, EmulatedDispatchMethodDescriptor> emulatedVirtualRetarget) {
-    this.staticRetarget = staticRetarget;
-    this.nonEmulatedVirtualRetarget = nonEmulatedVirtualRetarget;
-    this.emulatedVirtualRetarget = emulatedVirtualRetarget;
-  }
-
-  public static RetargetingInfo get(AppView<?> appView) {
-    MachineDesugaredLibrarySpecification specification =
-        appView.options().machineDesugaredLibrarySpecification;
-    return new RetargetingInfo(
-        specification.getStaticRetarget(),
-        specification.getNonEmulatedVirtualRetarget(),
-        specification.getEmulatedVirtualRetarget());
-  }
-
-  public Map<DexMethod, DexMethod> getStaticRetarget() {
-    return staticRetarget;
-  }
-
-  public Map<DexMethod, DexMethod> getNonEmulatedVirtualRetarget() {
-    return nonEmulatedVirtualRetarget;
-  }
-
-  public Map<DexMethod, EmulatedDispatchMethodDescriptor> getEmulatedVirtualRetarget() {
-    return emulatedVirtualRetarget;
-  }
-}
diff --git a/src/main/java/com/android/tools/r8/shaking/Enqueuer.java b/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
index 6a97cf2..8681f33 100644
--- a/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
+++ b/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
@@ -4116,8 +4116,7 @@
     InterfaceMethodProcessorFacade interfaceDesugaring =
         desugaring.getInterfaceMethodPostProcessingDesugaringR8(
             ExcludeDexResources, liveMethods::contains, interfaceProcessor);
-    CfPostProcessingDesugaringCollection.create(
-            appView, interfaceDesugaring, desugaring.getRetargetingInfo())
+    CfPostProcessingDesugaringCollection.create(appView, interfaceDesugaring)
         .postProcessingDesugaring(
             liveTypes.items, liveMethods::contains, eventConsumer, executorService);