| // Copyright (c) 2016, 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; |
| |
| import static com.android.tools.r8.R8Command.USAGE_MESSAGE; |
| |
| import com.android.tools.r8.dex.ApplicationReader; |
| import com.android.tools.r8.dex.ApplicationWriter; |
| import com.android.tools.r8.dex.Marker; |
| import com.android.tools.r8.dex.Marker.Tool; |
| import com.android.tools.r8.errors.CompilationError; |
| import com.android.tools.r8.experimental.graphinfo.GraphConsumer; |
| import com.android.tools.r8.graph.AppInfo; |
| import com.android.tools.r8.graph.AppInfoWithSubtyping; |
| import com.android.tools.r8.graph.AppServices; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.AppliedGraphLens; |
| import com.android.tools.r8.graph.DexApplication; |
| import com.android.tools.r8.graph.DexCallSite; |
| import com.android.tools.r8.graph.DexClass; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.DexReference; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.graph.GraphLense; |
| import com.android.tools.r8.ir.conversion.IRConverter; |
| import com.android.tools.r8.ir.optimize.EnumOrdinalMapCollector; |
| import com.android.tools.r8.ir.optimize.MethodPoolCollection; |
| import com.android.tools.r8.ir.optimize.SwitchMapCollector; |
| import com.android.tools.r8.ir.optimize.UninstantiatedTypeOptimization; |
| import com.android.tools.r8.ir.optimize.UnusedArgumentsCollector; |
| import com.android.tools.r8.jar.CfApplicationWriter; |
| import com.android.tools.r8.kotlin.Kotlin; |
| import com.android.tools.r8.naming.ClassNameMapper; |
| import com.android.tools.r8.naming.Minifier; |
| import com.android.tools.r8.naming.NamingLens; |
| import com.android.tools.r8.naming.ProguardMapApplier; |
| import com.android.tools.r8.naming.ProguardMapSupplier; |
| import com.android.tools.r8.naming.SeedMapper; |
| import com.android.tools.r8.naming.SourceFileRewriter; |
| import com.android.tools.r8.optimize.ClassAndMemberPublicizer; |
| import com.android.tools.r8.optimize.MemberRebindingAnalysis; |
| import com.android.tools.r8.optimize.VisibilityBridgeRemover; |
| import com.android.tools.r8.origin.CommandLineOrigin; |
| import com.android.tools.r8.shaking.AbstractMethodRemover; |
| import com.android.tools.r8.shaking.AnnotationRemover; |
| import com.android.tools.r8.shaking.DiscardedChecker; |
| import com.android.tools.r8.shaking.Enqueuer; |
| import com.android.tools.r8.shaking.Enqueuer.AppInfoWithLiveness; |
| import com.android.tools.r8.shaking.MainDexClasses; |
| import com.android.tools.r8.shaking.MainDexListBuilder; |
| import com.android.tools.r8.shaking.ProguardClassFilter; |
| import com.android.tools.r8.shaking.ProguardConfiguration; |
| import com.android.tools.r8.shaking.ProguardConfigurationRule; |
| import com.android.tools.r8.shaking.ProguardConfigurationUtils; |
| import com.android.tools.r8.shaking.RootSetBuilder; |
| import com.android.tools.r8.shaking.RootSetBuilder.RootSet; |
| import com.android.tools.r8.shaking.StaticClassMerger; |
| import com.android.tools.r8.shaking.TreePruner; |
| import com.android.tools.r8.shaking.VerticalClassMerger; |
| import com.android.tools.r8.shaking.WhyAreYouKeepingConsumer; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.AndroidApp; |
| import com.android.tools.r8.utils.CfgPrinter; |
| import com.android.tools.r8.utils.ExceptionUtils; |
| import com.android.tools.r8.utils.FileUtils; |
| import com.android.tools.r8.utils.InternalOptions; |
| import com.android.tools.r8.utils.LineNumberOptimizer; |
| import com.android.tools.r8.utils.Reporter; |
| import com.android.tools.r8.utils.SelfRetraceTest; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import com.android.tools.r8.utils.ThreadUtils; |
| import com.android.tools.r8.utils.Timing; |
| import com.android.tools.r8.utils.VersionProperties; |
| import com.google.common.collect.Iterables; |
| import com.google.common.io.ByteStreams; |
| import com.google.common.io.Closer; |
| import java.io.ByteArrayOutputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.PrintStream; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.StandardOpenOption; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| |
| /** |
| * The R8 compiler. |
| * |
| * <p>R8 performs whole-program optimizing compilation of Java bytecode. It supports compilation of |
| * Java bytecode to Java bytecode or DEX bytecode. R8 supports tree-shaking the program to remove |
| * unneeded code and it supports minification of the program names to reduce the size of the |
| * resulting program. |
| * |
| * <p>The R8 API is intentionally limited and should "do the right thing" given a command. If this |
| * API does not suffice please contact the D8/R8 team. |
| * |
| * <p>R8 supports some configuration using configuration files mostly compatible with the format of |
| * the <a href="https://www.guardsquare.com/en/proguard">ProGuard</a> optimizer. |
| * |
| * <p>The compiler is invoked by calling {@link #run(R8Command) R8.run} with an appropriate {link |
| * R8Command}. For example: |
| * |
| * <pre> |
| * R8.run(R8Command.builder() |
| * .addProgramFiles(inputPathA, inputPathB) |
| * .addLibraryFiles(androidJar) |
| * .setOutput(outputPath, OutputMode.DexIndexed) |
| * .build()); |
| * </pre> |
| * |
| * The above reads the input files denoted by {@code inputPathA} and {@code inputPathB}, compiles |
| * them to DEX bytecode, using {@code androidJar} as the reference of the system runtime library, |
| * and then writes the result to the directory or zip archive specified by {@code outputPath}. |
| */ |
| @Keep |
| public class R8 { |
| |
| private final Timing timing = new Timing("R8"); |
| private final InternalOptions options; |
| |
| private R8(InternalOptions options) { |
| this.options = options; |
| options.itemFactory.resetSortedIndices(); |
| } |
| |
| /** |
| * Main API entry for the R8 compiler. |
| * |
| * <p>The R8 API is intentionally limited and should "do the right thing" given a command. If this |
| * API does not suffice please contact the R8 team. |
| * |
| * @param command R8 command. |
| */ |
| public static void run(R8Command command) throws CompilationFailedException { |
| AndroidApp app = command.getInputApp(); |
| InternalOptions options = command.getInternalOptions(); |
| runForTesting(app, options); |
| } |
| |
| /** |
| * Main API entry for the R8 compiler. |
| * |
| * <p>The R8 API is intentionally limited and should "do the right thing" given a command. If this |
| * API does not suffice please contact the R8 team. |
| * |
| * @param command R8 command. |
| * @param executor executor service from which to get threads for multi-threaded processing. |
| */ |
| public static void run(R8Command command, ExecutorService executor) |
| throws CompilationFailedException { |
| AndroidApp app = command.getInputApp(); |
| InternalOptions options = command.getInternalOptions(); |
| ExceptionUtils.withR8CompilationHandler( |
| command.getReporter(), |
| () -> { |
| run(app, options, executor); |
| }); |
| } |
| |
| // Compute the marker to be placed in the main dex file. |
| private static Marker getMarker(InternalOptions options) { |
| if (options.hasMarker()) { |
| return options.getMarker(); |
| } |
| Marker marker = |
| new Marker(Tool.R8) |
| .setVersion(Version.LABEL) |
| .setCompilationMode(options.debug ? CompilationMode.DEBUG : CompilationMode.RELEASE); |
| if (!options.isGeneratingClassFiles()) { |
| marker.setMinApi(options.minApiLevel); |
| } |
| if (Version.isDev()) { |
| marker.setSha1(VersionProperties.INSTANCE.getSha()); |
| } |
| return marker; |
| } |
| |
| static void writeApplication( |
| ExecutorService executorService, |
| DexApplication application, |
| AppView<? extends AppInfo> appView, |
| String deadCode, |
| GraphLense graphLense, |
| NamingLens namingLens, |
| String proguardSeedsData, |
| InternalOptions options, |
| ProguardMapSupplier proguardMapSupplier) |
| throws ExecutionException { |
| try { |
| Marker marker = getMarker(options); |
| assert marker != null; |
| if (options.isGeneratingClassFiles()) { |
| new CfApplicationWriter( |
| application, |
| appView, |
| options, |
| marker, |
| deadCode, |
| graphLense, |
| namingLens, |
| proguardSeedsData, |
| proguardMapSupplier) |
| .write(options.getClassFileConsumer(), executorService); |
| } else { |
| new ApplicationWriter( |
| application, |
| appView, |
| options, |
| Collections.singletonList(marker), |
| deadCode, |
| graphLense, |
| namingLens, |
| proguardSeedsData, |
| proguardMapSupplier) |
| .write(executorService); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException("Cannot write application", e); |
| } |
| } |
| |
| private Set<DexType> filterMissingClasses(Set<DexType> missingClasses, |
| ProguardClassFilter dontWarnPatterns) { |
| Set<DexType> result = new HashSet<>(missingClasses); |
| dontWarnPatterns.filterOutMatches(result); |
| return result; |
| } |
| |
| static void runForTesting(AndroidApp app, InternalOptions options) |
| throws CompilationFailedException { |
| ExecutorService executor = ThreadUtils.getExecutorService(options); |
| ExceptionUtils.withR8CompilationHandler( |
| options.reporter, |
| () -> { |
| try { |
| run(app, options, executor); |
| } finally { |
| executor.shutdown(); |
| } |
| }); |
| } |
| |
| private static void run(AndroidApp app, InternalOptions options, ExecutorService executor) |
| throws IOException { |
| new R8(options).run(app, executor); |
| } |
| |
| private void run(AndroidApp inputApp, ExecutorService executorService) throws IOException { |
| assert options.programConsumer != null; |
| if (options.quiet) { |
| System.setOut(new PrintStream(ByteStreams.nullOutputStream())); |
| } |
| try { |
| DexApplication application = |
| new ApplicationReader(inputApp, options, timing).read(executorService).toDirect(); |
| |
| // Now that the dex-application is fully loaded, close any internal archive providers. |
| inputApp.closeInternalArchiveProviders(); |
| |
| AppView<AppInfoWithSubtyping> appView = |
| new AppView<>( |
| new AppInfoWithSubtyping(application), GraphLense.getIdentityLense(), options); |
| appView.setAppServices(AppServices.builder(appView).build()); |
| |
| List<ProguardConfigurationRule> synthesizedProguardRules = new ArrayList<>(); |
| RootSet rootSet; |
| String proguardSeedsData = null; |
| timing.begin("Strip unused code"); |
| try { |
| Set<DexType> missingClasses = appView.appInfo().getMissingClasses(); |
| missingClasses = filterMissingClasses( |
| missingClasses, options.getProguardConfiguration().getDontWarnPatterns()); |
| if (!missingClasses.isEmpty()) { |
| missingClasses.forEach( |
| clazz -> { |
| options.reporter.warning( |
| new StringDiagnostic("Missing class: " + clazz.toSourceString())); |
| }); |
| if (!options.ignoreMissingClasses) { |
| throw new CompilationError( |
| "Compilation can't be completed because some library classes are missing."); |
| } |
| } |
| |
| // Compute kotlin info before setting the roots and before |
| // kotlin metadata annotation is removed. |
| computeKotlinInfoForProgramClasses(application, appView.appInfo()); |
| |
| ProguardConfiguration.Builder compatibility = |
| ProguardConfiguration.builder(application.dexItemFactory, options.reporter); |
| |
| // Add synthesized -assumevalues from min api if relevant. |
| if (options.isGeneratingDex()) { |
| if (!ProguardConfigurationUtils.hasExplicitAssumeValuesRuleForMinSdk( |
| options.itemFactory, |
| options.getProguardConfiguration().getRules())) { |
| synthesizedProguardRules.add( |
| ProguardConfigurationUtils.buildAssumeValuesForApiLevel( |
| options.itemFactory, |
| AndroidApiLevel.getAndroidApiLevel(options.minApiLevel))); |
| } |
| } |
| |
| rootSet = |
| new RootSetBuilder( |
| appView, |
| application, |
| Iterables.concat( |
| options.getProguardConfiguration().getRules(), synthesizedProguardRules), |
| options |
| ).run(executorService); |
| |
| Enqueuer enqueuer = new Enqueuer(appView, options, null, compatibility); |
| appView.setAppInfo( |
| enqueuer.traceApplication( |
| rootSet, |
| options.getProguardConfiguration().getDontWarnPatterns(), |
| executorService, |
| timing)); |
| assert rootSet.verifyKeptFieldsAreAccessedAndLive(appView.appInfo().withLiveness()); |
| assert rootSet.verifyKeptMethodsAreTargetedAndLive(appView.appInfo().withLiveness()); |
| assert rootSet.verifyKeptTypesAreLive(appView.appInfo().withLiveness()); |
| |
| if (options.getProguardConfiguration().isPrintSeeds()) { |
| ByteArrayOutputStream bytes = new ByteArrayOutputStream(); |
| PrintStream out = new PrintStream(bytes); |
| RootSetBuilder.writeSeeds(appView.appInfo().withLiveness(), out, type -> true); |
| out.flush(); |
| proguardSeedsData = bytes.toString(); |
| } |
| if (options.enableTreeShaking) { |
| TreePruner pruner = |
| new TreePruner(application, appView.appInfo().withLiveness(), options); |
| application = pruner.run(); |
| |
| // Recompute the subtyping information. |
| appView.setAppInfo( |
| appView |
| .appInfo() |
| .withLiveness() |
| .prunedCopyFrom(application, pruner.getRemovedClasses())); |
| new AbstractMethodRemover(appView.appInfo().withLiveness()).run(); |
| } |
| |
| new AnnotationRemover(appView.appInfo().withLiveness(), appView.graphLense(), options) |
| .ensureValid(compatibility) |
| .run(); |
| |
| // TODO(69445518): This is still work in progress, and this file writing is currently used |
| // for testing. |
| if (options.forceProguardCompatibility |
| && options.proguardCompatibilityRulesOutput != null) { |
| try (Closer closer = Closer.create()) { |
| OutputStream outputStream = |
| FileUtils.openPath( |
| closer, |
| options.proguardCompatibilityRulesOutput, |
| StandardOpenOption.CREATE, |
| StandardOpenOption.TRUNCATE_EXISTING, |
| StandardOpenOption.WRITE); |
| PrintStream ps = new PrintStream(outputStream); |
| ps.println(compatibility.buildRaw().toString()); |
| } |
| } |
| } finally { |
| timing.end(); |
| } |
| |
| assert appView.appInfo().hasLiveness(); |
| |
| if (options.getProguardConfiguration().isAccessModificationAllowed()) { |
| GraphLense publicizedLense = |
| ClassAndMemberPublicizer.run( |
| executorService, timing, application, appView.withLiveness(), rootSet); |
| if (publicizedLense != appView.graphLense()) { |
| appView.setGraphLense(publicizedLense); |
| // We can now remove visibility bridges. Note that we do not need to update the |
| // invoke-targets here, as the existing invokes will simply dispatch to the now |
| // visible super-method. MemberRebinding, if run, will then dispatch it correctly. |
| new VisibilityBridgeRemover(appView.withLiveness()).run(); |
| } |
| } |
| |
| // Build conservative main dex content before first round of tree shaking. This is used |
| // by certain optimizations to avoid introducing additional class references into main dex |
| // classes, as that can cause the final number of main dex methods to grow. |
| RootSet mainDexRootSet = null; |
| MainDexClasses mainDexClasses = MainDexClasses.NONE; |
| if (!options.mainDexKeepRules.isEmpty()) { |
| // Find classes which may have code executed before secondary dex files installation. |
| mainDexRootSet = |
| new RootSetBuilder(appView, application, options.mainDexKeepRules, options) |
| .run(executorService); |
| Enqueuer enqueuer = new Enqueuer(appView, options, null); |
| AppInfoWithLiveness mainDexAppInfo = |
| enqueuer.traceMainDex(mainDexRootSet, executorService, timing); |
| // LiveTypes is the tracing result. |
| Set<DexType> mainDexBaseClasses = new HashSet<>(mainDexAppInfo.liveTypes); |
| // Calculate the automatic main dex list according to legacy multidex constraints. |
| mainDexClasses = new MainDexListBuilder(mainDexBaseClasses, application).run(); |
| } |
| |
| if (appView.appInfo().hasLiveness()) { |
| AppView<AppInfoWithLiveness> appViewWithLiveness = appView.withLiveness(); |
| |
| if (options.getProguardConfiguration().hasApplyMappingFile()) { |
| SeedMapper seedMapper = |
| SeedMapper.seedMapperFromFile( |
| options.getProguardConfiguration().getApplyMappingFile()); |
| timing.begin("apply-mapping"); |
| GraphLense applyMappingLense = |
| new ProguardMapApplier(appView.withLiveness(), seedMapper).run(timing); |
| rootSet = rootSet.rewrittenWithLense(applyMappingLense); |
| appView.setGraphLense(applyMappingLense); |
| application = application.asDirect().rewrittenWithLense(appView.graphLense()); |
| appView.setAppInfo( |
| appView |
| .appInfo() |
| .withLiveness() |
| .rewrittenWithLense(application.asDirect(), appView.graphLense())); |
| timing.end(); |
| } |
| appView.setGraphLense(new MemberRebindingAnalysis(appViewWithLiveness, options).run()); |
| if (options.enableHorizontalClassMerging) { |
| StaticClassMerger staticClassMerger = |
| new StaticClassMerger(appViewWithLiveness, options, mainDexClasses); |
| appView.setGraphLense(staticClassMerger.run()); |
| appViewWithLiveness.setAppInfo( |
| appViewWithLiveness |
| .appInfo() |
| .rewrittenWithLense(application.asDirect(), appView.graphLense())); |
| } |
| if (options.enableVerticalClassMerging) { |
| timing.begin("ClassMerger"); |
| VerticalClassMerger verticalClassMerger = |
| new VerticalClassMerger( |
| application, |
| appViewWithLiveness, |
| executorService, |
| options, |
| timing, |
| mainDexClasses); |
| appView.setGraphLense(verticalClassMerger.run()); |
| appView.setVerticallyMergedClasses(verticalClassMerger.getMergedClasses()); |
| timing.end(); |
| application = application.asDirect().rewrittenWithLense(appView.graphLense()); |
| appViewWithLiveness.setAppInfo( |
| appViewWithLiveness |
| .appInfo() |
| .prunedCopyFrom(application, verticalClassMerger.getRemovedClasses()) |
| .rewrittenWithLense(application.asDirect(), appView.graphLense())); |
| } |
| if (options.enableArgumentRemoval) { |
| if (options.enableUnusedArgumentRemoval) { |
| timing.begin("UnusedArgumentRemoval"); |
| appView.setGraphLense( |
| new UnusedArgumentsCollector(appViewWithLiveness).run(executorService)); |
| application = application.asDirect().rewrittenWithLense(appView.graphLense()); |
| timing.end(); |
| appViewWithLiveness.setAppInfo( |
| appViewWithLiveness |
| .appInfo() |
| .rewrittenWithLense(application.asDirect(), appView.graphLense())); |
| } |
| if (options.enableUninstantiatedTypeOptimization) { |
| timing.begin("UninstantiatedTypeOptimization"); |
| appView.setGraphLense( |
| new UninstantiatedTypeOptimization(appViewWithLiveness, options) |
| .run(new MethodPoolCollection(application), executorService, timing)); |
| application = application.asDirect().rewrittenWithLense(appView.graphLense()); |
| timing.end(); |
| appViewWithLiveness.setAppInfo( |
| appViewWithLiveness |
| .appInfo() |
| .rewrittenWithLense(application.asDirect(), appView.graphLense())); |
| } |
| } |
| |
| // Collect switch maps and ordinals maps. |
| appViewWithLiveness.setAppInfo(new SwitchMapCollector(appViewWithLiveness, options).run()); |
| appViewWithLiveness.setAppInfo( |
| new EnumOrdinalMapCollector(appViewWithLiveness, options).run()); |
| } |
| |
| appView.setAppServices(appView.appServices().rewrittenWithLens(appView.graphLense())); |
| |
| timing.begin("Create IR"); |
| Set<DexCallSite> desugaredCallSites; |
| CfgPrinter printer = options.printCfg ? new CfgPrinter() : null; |
| try { |
| IRConverter converter = |
| new IRConverter( |
| appView.withLiveness(), options, timing, printer, mainDexClasses, rootSet); |
| application = converter.optimize(application, executorService); |
| desugaredCallSites = converter.getDesugaredCallSites(); |
| } finally { |
| timing.end(); |
| } |
| |
| // At this point all code has been mapped according to the graph lens. We cannot remove the |
| // graph lens entirely, though, since it is needed for mapping all field and method signatures |
| // back to the original program. |
| timing.begin("AppliedGraphLens construction"); |
| appView.setGraphLense(new AppliedGraphLens(appView, application.classes())); |
| timing.end(); |
| |
| if (options.printCfg) { |
| if (options.printCfgFile == null || options.printCfgFile.isEmpty()) { |
| System.out.print(printer.toString()); |
| } else { |
| try (OutputStreamWriter writer = new OutputStreamWriter( |
| new FileOutputStream(options.printCfgFile), |
| StandardCharsets.UTF_8)) { |
| writer.write(printer.toString()); |
| } |
| } |
| } |
| |
| // Overwrite SourceFile if specified. This step should be done after IR conversion. |
| timing.begin("Rename SourceFile"); |
| new SourceFileRewriter(appView.appInfo(), options).run(); |
| timing.end(); |
| |
| if (!options.mainDexKeepRules.isEmpty()) { |
| appView.setAppInfo(new AppInfoWithSubtyping(application)); |
| // No need to build a new main dex root set |
| assert mainDexRootSet != null; |
| GraphConsumer mainDexKeptGraphConsumer = options.mainDexKeptGraphConsumer; |
| WhyAreYouKeepingConsumer whyAreYouKeepingConsumer = null; |
| if (!mainDexRootSet.reasonAsked.isEmpty()) { |
| whyAreYouKeepingConsumer = new WhyAreYouKeepingConsumer(mainDexKeptGraphConsumer); |
| mainDexKeptGraphConsumer = whyAreYouKeepingConsumer; |
| } |
| |
| Enqueuer enqueuer = new Enqueuer(appView, options, mainDexKeptGraphConsumer); |
| // Find classes which may have code executed before secondary dex files installation. |
| AppInfoWithLiveness mainDexAppInfo = |
| enqueuer.traceMainDex(mainDexRootSet, executorService, timing); |
| // LiveTypes is the tracing result. |
| Set<DexType> mainDexBaseClasses = new HashSet<>(mainDexAppInfo.liveTypes); |
| // Calculate the automatic main dex list according to legacy multidex constraints. |
| mainDexClasses = new MainDexListBuilder(mainDexBaseClasses, application).run(); |
| if (!mainDexRootSet.checkDiscarded.isEmpty()) { |
| new DiscardedChecker( |
| mainDexRootSet, mainDexClasses.getClasses(), appView.appInfo(), options) |
| .run(); |
| } |
| if (whyAreYouKeepingConsumer != null) { |
| for (DexReference reference : mainDexRootSet.reasonAsked) { |
| whyAreYouKeepingConsumer.printWhyAreYouKeeping( |
| enqueuer.getGraphNode(reference), System.out); |
| } |
| } |
| } |
| |
| appView.setAppInfo(new AppInfoWithSubtyping(application)); |
| |
| if (options.enableTreeShaking || options.enableMinification) { |
| timing.begin("Post optimization code stripping"); |
| try { |
| |
| GraphConsumer keptGraphConsumer = null; |
| WhyAreYouKeepingConsumer whyAreYouKeepingConsumer = null; |
| if (options.enableTreeShaking) { |
| keptGraphConsumer = options.keptGraphConsumer; |
| if (!rootSet.reasonAsked.isEmpty()) { |
| whyAreYouKeepingConsumer = new WhyAreYouKeepingConsumer(keptGraphConsumer); |
| keptGraphConsumer = whyAreYouKeepingConsumer; |
| } |
| } |
| |
| Enqueuer enqueuer = new Enqueuer(appView, options, keptGraphConsumer); |
| appView.setAppInfo( |
| enqueuer.traceApplication( |
| rootSet, |
| options.getProguardConfiguration().getDontWarnPatterns(), |
| executorService, |
| timing)); |
| |
| AppView<AppInfoWithLiveness> appViewWithLiveness = appView.withLiveness(); |
| if (options.enableTreeShaking) { |
| TreePruner pruner = new TreePruner(application, appViewWithLiveness.appInfo(), options); |
| application = pruner.run(); |
| appViewWithLiveness.setAppInfo( |
| appViewWithLiveness |
| .appInfo() |
| .prunedCopyFrom(application, pruner.getRemovedClasses())); |
| |
| // Print reasons on the application after pruning, so that we reflect the actual result. |
| if (whyAreYouKeepingConsumer != null) { |
| for (DexReference reference : rootSet.reasonAsked) { |
| whyAreYouKeepingConsumer.printWhyAreYouKeeping( |
| enqueuer.getGraphNode(reference), System.out); |
| } |
| } |
| // Remove annotations that refer to types that no longer exist. |
| new AnnotationRemover(appView.appInfo().withLiveness(), appView.graphLense(), options) |
| .run(); |
| if (!mainDexClasses.isEmpty()) { |
| // Remove types that no longer exists from the computed main dex list. |
| mainDexClasses = mainDexClasses.prunedCopy(appView.appInfo().withLiveness()); |
| } |
| } |
| } finally { |
| timing.end(); |
| } |
| } |
| |
| // Add automatic main dex classes to an eventual manual list of classes. |
| if (!options.mainDexKeepRules.isEmpty()) { |
| application = application.builder().addToMainDexList(mainDexClasses.getClasses()).build(); |
| } |
| |
| // Only perform discard-checking if tree-shaking is turned on. |
| if (options.enableTreeShaking && !rootSet.checkDiscarded.isEmpty()) { |
| new DiscardedChecker(rootSet, application, options).run(); |
| } |
| |
| // Perform minification. |
| NamingLens namingLens; |
| if (options.enableMinification) { |
| timing.begin("Minification"); |
| namingLens = new Minifier(appView.withLiveness(), rootSet, desugaredCallSites).run(timing); |
| timing.end(); |
| } else { |
| namingLens = NamingLens.getIdentityLens(); |
| } |
| |
| ProguardMapSupplier proguardMapSupplier; |
| |
| timing.begin("Line number remapping"); |
| // When line number optimization is turned off the identity mapping for line numbers is |
| // used. We still run the line number optimizer to collect line numbers and inline frame |
| // information for the mapping file. |
| ClassNameMapper classNameMapper = LineNumberOptimizer.run(appView, application, namingLens); |
| timing.end(); |
| proguardMapSupplier = ProguardMapSupplier.fromClassNameMapper(classNameMapper, options); |
| |
| // If a method filter is present don't produce output since the application is likely partial. |
| if (options.hasMethodsFilter()) { |
| System.out.println("Finished compilation with method filter: "); |
| options.methodsFilter.forEach(m -> System.out.println(" - " + m)); |
| return; |
| } |
| |
| // Validity checks. |
| assert application.classes().stream().allMatch(DexClass::isValid); |
| assert rootSet.verifyKeptItemsAreKept(application, appView.appInfo()); |
| assert appView |
| .graphLense() |
| .verifyMappingToOriginalProgram( |
| application.classesWithDeterministicOrder(), |
| new ApplicationReader(inputApp.withoutMainDexList(), options, timing) |
| .read(executorService), |
| appView.dexItemFactory()); |
| |
| // Report synthetic rules (only for testing). |
| // TODO(b/120959039): Move this to being reported through the graph consumer. |
| if (options.syntheticProguardRulesConsumer != null) { |
| options.syntheticProguardRulesConsumer.accept(synthesizedProguardRules); |
| } |
| |
| // Generate the resulting application resources. |
| writeApplication( |
| executorService, |
| application, |
| appView, |
| application.deadCode, |
| appView.graphLense(), |
| namingLens, |
| proguardSeedsData, |
| options, |
| proguardMapSupplier); |
| |
| options.printWarnings(); |
| } catch (ExecutionException e) { |
| throw unwrapExecutionException(e); |
| } finally { |
| options.signalFinishedToConsumers(); |
| // Dump timings. |
| if (options.printTimes) { |
| timing.report(); |
| } |
| } |
| } |
| |
| private void computeKotlinInfoForProgramClasses( |
| DexApplication application, AppInfoWithSubtyping appInfo) { |
| Kotlin kotlin = appInfo.dexItemFactory.kotlin; |
| Reporter reporter = options.reporter; |
| for (DexProgramClass programClass : application.classes()) { |
| programClass.setKotlinInfo(kotlin.getKotlinInfo(programClass, reporter)); |
| } |
| } |
| |
| static RuntimeException unwrapExecutionException(ExecutionException executionException) { |
| Throwable cause = executionException.getCause(); |
| if (cause instanceof Error) { |
| // add original exception as suppressed exception to provide the original stack trace |
| cause.addSuppressed(executionException); |
| throw (Error) cause; |
| } else if (cause instanceof RuntimeException) { |
| cause.addSuppressed(executionException); |
| throw (RuntimeException) cause; |
| } else { |
| throw new RuntimeException(executionException.getMessage(), cause); |
| } |
| } |
| |
| private static void run(String[] args) throws CompilationFailedException { |
| R8Command command = R8Command.parse(args, CommandLineOrigin.INSTANCE).build(); |
| if (command.isPrintHelp()) { |
| SelfRetraceTest.test(); |
| System.out.println(USAGE_MESSAGE); |
| return; |
| } |
| if (command.isPrintVersion()) { |
| Version.printToolVersion("R8"); |
| return; |
| } |
| InternalOptions options = command.getInternalOptions(); |
| ExecutorService executorService = ThreadUtils.getExecutorService(options); |
| try { |
| ExceptionUtils.withR8CompilationHandler(options.reporter, () -> |
| run(command.getInputApp(), options, executorService)); |
| } finally { |
| executorService.shutdown(); |
| } |
| } |
| |
| /** |
| * Command-line entry to R8. |
| * |
| * See {@link R8Command#USAGE_MESSAGE} or run {@code r8 --help} for usage information. |
| */ |
| public static void main(String[] args) { |
| if (args.length == 0) { |
| System.err.println(USAGE_MESSAGE); |
| System.exit(ExceptionUtils.STATUS_ERROR); |
| } |
| ExceptionUtils.withMainProgramHandler(() -> run(args)); |
| } |
| } |
