Coverage Report

Created: 2020-09-19 12:23

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
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//===--- ExecuteCompilerInvocation.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file holds ExecuteCompilerInvocation(). It is split into its own file to
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// minimize the impact of pulling in essentially everything else in Clang.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/ARCMigrate/ARCMTActions.h"
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#include "clang/CodeGen/CodeGenAction.h"
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#include "clang/Config/config.h"
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#include "clang/Driver/Options.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/CompilerInvocation.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/FrontendPluginRegistry.h"
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#include "clang/Frontend/Utils.h"
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#include "clang/FrontendTool/Utils.h"
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#include "clang/Rewrite/Frontend/FrontendActions.h"
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#include "clang/StaticAnalyzer/Frontend/AnalyzerHelpFlags.h"
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#include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
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#include "llvm/Option/OptTable.h"
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#include "llvm/Option/Option.h"
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#include "llvm/Support/BuryPointer.h"
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#include "llvm/Support/DynamicLibrary.h"
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#include "llvm/Support/ErrorHandling.h"
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using namespace clang;
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using namespace llvm::opt;
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namespace clang {
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static std::unique_ptr<FrontendAction>
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CreateFrontendBaseAction(CompilerInstance &CI) {
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  using namespace clang::frontend;
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  StringRef Action("unknown");
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  (void)Action;
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  switch (CI.getFrontendOpts().ProgramAction) {
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0
  case ASTDeclList:            return std::make_unique<ASTDeclListAction>();
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  case ASTDump:                return std::make_unique<ASTDumpAction>();
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514
  case ASTPrint:               return std::make_unique<ASTPrintAction>();
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0
  case ASTView:                return std::make_unique<ASTViewAction>();
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3
  case DumpCompilerOptions:
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3
    return std::make_unique<DumpCompilerOptionsAction>();
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0
  case DumpRawTokens:          return std::make_unique<DumpRawTokensAction>();
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3
  case DumpTokens:             return std::make_unique<DumpTokensAction>();
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560
  case EmitAssembly:           return std::make_unique<EmitAssemblyAction>();
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  case EmitBC:                 return std::make_unique<EmitBCAction>();
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3
  case EmitHTML:               return std::make_unique<HTMLPrintAction>();
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  case EmitLLVM:               return std::make_unique<EmitLLVMAction>();
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  case EmitLLVMOnly:           return std::make_unique<EmitLLVMOnlyAction>();
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  case EmitCodeGenOnly:        return std::make_unique<EmitCodeGenOnlyAction>();
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3.33k
  case EmitObj:                return std::make_unique<EmitObjAction>();
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  case FixIt:                  return std::make_unique<FixItAction>();
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  case GenerateModule:
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    return std::make_unique<GenerateModuleFromModuleMapAction>();
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  case GenerateModuleInterface:
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    return std::make_unique<GenerateModuleInterfaceAction>();
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  case GenerateHeaderModule:
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    return std::make_unique<GenerateHeaderModuleAction>();
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  case GeneratePCH:            return std::make_unique<GeneratePCHAction>();
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  case GenerateInterfaceStubs:
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    return std::make_unique<GenerateInterfaceStubsAction>();
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  case InitOnly:               return std::make_unique<InitOnlyAction>();
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  case ParseSyntaxOnly:        return std::make_unique<SyntaxOnlyAction>();
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  case ModuleFileInfo:         return std::make_unique<DumpModuleInfoAction>();
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  case VerifyPCH:              return std::make_unique<VerifyPCHAction>();
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  case TemplightDump:          return std::make_unique<TemplightDumpAction>();
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0
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1
  case PluginAction: {
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    for (const FrontendPluginRegistry::entry &Plugin :
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         FrontendPluginRegistry::entries()) {
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      if (Plugin.getName() == CI.getFrontendOpts().ActionName) {
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        std::unique_ptr<PluginASTAction> P(Plugin.instantiate());
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        if ((P->getActionType() != PluginASTAction::ReplaceAction &&
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             P->getActionType() != PluginASTAction::Cmdline) ||
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            !P->ParseArgs(
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                CI,
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                CI.getFrontendOpts().PluginArgs[std::string(Plugin.getName())]))
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          return nullptr;
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        return std::move(P);
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      }
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    }
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    CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
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      << CI.getFrontendOpts().ActionName;
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    return nullptr;
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  }
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  case PrintPreamble:          return std::make_unique<PrintPreambleAction>();
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  case PrintPreprocessedInput: {
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    if (CI.getPreprocessorOutputOpts().RewriteIncludes ||
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        CI.getPreprocessorOutputOpts().RewriteImports)
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      return std::make_unique<RewriteIncludesAction>();
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    return std::make_unique<PrintPreprocessedAction>();
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  }
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  case RewriteMacros:          return std::make_unique<RewriteMacrosAction>();
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  case RewriteTest:            return std::make_unique<RewriteTestAction>();
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#if CLANG_ENABLE_OBJC_REWRITER
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  case RewriteObjC:            return std::make_unique<RewriteObjCAction>();
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#else
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  case RewriteObjC:            Action = "RewriteObjC"; break;
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#endif
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#if CLANG_ENABLE_ARCMT
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  case MigrateSource:
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    return std::make_unique<arcmt::MigrateSourceAction>();
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#else
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  case MigrateSource:          Action = "MigrateSource"; break;
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#endif
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#if CLANG_ENABLE_STATIC_ANALYZER
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  case RunAnalysis:            return std::make_unique<ento::AnalysisAction>();
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#else
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  case RunAnalysis:            Action = "RunAnalysis"; break;
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#endif
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  case RunPreprocessorOnly:    return std::make_unique<PreprocessOnlyAction>();
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  case PrintDependencyDirectivesSourceMinimizerOutput:
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    return std::make_unique<PrintDependencyDirectivesSourceMinimizerAction>();
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  }
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#if !CLANG_ENABLE_ARCMT || !CLANG_ENABLE_STATIC_ANALYZER \
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  || !CLANG_ENABLE_OBJC_REWRITER
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  CI.getDiagnostics().Report(diag::err_fe_action_not_available) << Action;
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  return 0;
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#else
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  llvm_unreachable("Invalid program action!");
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#endif
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}
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std::unique_ptr<FrontendAction>
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CreateFrontendAction(CompilerInstance &CI) {
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  // Create the underlying action.
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  std::unique_ptr<FrontendAction> Act = CreateFrontendBaseAction(CI);
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  if (!Act)
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    return nullptr;
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  const FrontendOptions &FEOpts = CI.getFrontendOpts();
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  if (FEOpts.FixAndRecompile) {
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    Act = std::make_unique<FixItRecompile>(std::move(Act));
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  }
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#if CLANG_ENABLE_ARCMT
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  if (CI.getFrontendOpts().ProgramAction != frontend::MigrateSource &&
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      CI.getFrontendOpts().ProgramAction != frontend::GeneratePCH) {
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    // Potentially wrap the base FE action in an ARC Migrate Tool action.
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    switch (FEOpts.ARCMTAction) {
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    case FrontendOptions::ARCMT_None:
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      break;
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    case FrontendOptions::ARCMT_Check:
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      Act = std::make_unique<arcmt::CheckAction>(std::move(Act));
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      break;
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    case FrontendOptions::ARCMT_Modify:
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      Act = std::make_unique<arcmt::ModifyAction>(std::move(Act));
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      break;
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    case FrontendOptions::ARCMT_Migrate:
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      Act = std::make_unique<arcmt::MigrateAction>(std::move(Act),
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                                     FEOpts.MTMigrateDir,
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                                     FEOpts.ARCMTMigrateReportOut,
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                                     FEOpts.ARCMTMigrateEmitARCErrors);
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      break;
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    }
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    if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
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      Act = std::make_unique<arcmt::ObjCMigrateAction>(std::move(Act),
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                                                        FEOpts.MTMigrateDir,
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                                                        FEOpts.ObjCMTAction);
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    }
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  }
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#endif
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  // If there are any AST files to merge, create a frontend action
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  // adaptor to perform the merge.
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  if (!FEOpts.ASTMergeFiles.empty())
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    Act = std::make_unique<ASTMergeAction>(std::move(Act),
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                                            FEOpts.ASTMergeFiles);
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  return Act;
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}
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bool ExecuteCompilerInvocation(CompilerInstance *Clang) {
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  // Honor -help.
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39.0k
  if (Clang->getFrontendOpts().ShowHelp) {
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1
    driver::getDriverOptTable().PrintHelp(
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        llvm::outs(), "clang -cc1 [options] file...",
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        "LLVM 'Clang' Compiler: http://clang.llvm.org",
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        /*Include=*/driver::options::CC1Option,
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        /*Exclude=*/0, /*ShowAllAliases=*/false);
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    return true;
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  }
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  // Honor -version.
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  //
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  // FIXME: Use a better -version message?
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  if (Clang->getFrontendOpts().ShowVersion) {
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    llvm::cl::PrintVersionMessage();
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    return true;
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  }
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  // Load any requested plugins.
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  for (const std::string &Path : Clang->getFrontendOpts().Plugins) {
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    std::string Error;
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    if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error))
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      Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin)
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        << Path << Error;
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  }
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  // Check if any of the loaded plugins replaces the main AST action
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  for (const FrontendPluginRegistry::entry &Plugin :
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       FrontendPluginRegistry::entries()) {
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    std::unique_ptr<PluginASTAction> P(Plugin.instantiate());
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    if (P->getActionType() == PluginASTAction::ReplaceAction) {
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      Clang->getFrontendOpts().ProgramAction = clang::frontend::PluginAction;
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      Clang->getFrontendOpts().ActionName = Plugin.getName().str();
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      break;
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0
    }
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  }
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39.0k
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  // Honor -mllvm.
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  //
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  // FIXME: Remove this, one day.
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  // This should happen AFTER plugins have been loaded!
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39.0k
  if (!Clang->getFrontendOpts().LLVMArgs.empty()) {
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39.0k
    unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size();
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    auto Args = std::make_unique<const char*[]>(NumArgs + 2);
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39.0k
    Args[0] = "clang (LLVM option parsing)";
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    for (unsigned i = 0; i != NumArgs; 
++i39.1k
)
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      Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
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    Args[NumArgs + 1] = nullptr;
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    llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args.get());
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  }
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39.0k
#if CLANG_ENABLE_STATIC_ANALYZER
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  // These should happen AFTER plugins have been loaded!
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39.0k
  AnalyzerOptions &AnOpts = *Clang->getAnalyzerOpts();
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  // Honor -analyzer-checker-help and -analyzer-checker-help-hidden.
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39.0k
  if (AnOpts.ShowCheckerHelp || 
AnOpts.ShowCheckerHelpAlpha39.0k
||
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39.0k
      AnOpts.ShowCheckerHelpDeveloper) {
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    ento::printCheckerHelp(llvm::outs(), *Clang);
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    return true;
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  }
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39.0k
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  // Honor -analyzer-checker-option-help.
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39.0k
  if (AnOpts.ShowCheckerOptionList || 
AnOpts.ShowCheckerOptionAlphaList38.9k
||
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      AnOpts.ShowCheckerOptionDeveloperList) {
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    ento::printCheckerConfigList(llvm::outs(), *Clang);
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    return true;
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  }
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38.9k
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  // Honor -analyzer-list-enabled-checkers.
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38.9k
  if (AnOpts.ShowEnabledCheckerList) {
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    ento::printEnabledCheckerList(llvm::outs(), *Clang);
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4
    return true;
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  }
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  // Honor -analyzer-config-help.
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38.9k
  if (AnOpts.ShowConfigOptionsList) {
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1
    ento::printAnalyzerConfigList(llvm::outs());
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1
    return true;
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1
  }
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38.9k
#endif
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38.9k
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  // If there were errors in processing arguments, don't do anything else.
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38.9k
  if (Clang->getDiagnostics().hasErrorOccurred())
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    return false;
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  // Create and execute the frontend action.
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38.9k
  std::unique_ptr<FrontendAction> Act(CreateFrontendAction(*Clang));
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38.9k
  if (!Act)
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1
    return false;
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38.9k
  bool Success = Clang->ExecuteAction(*Act);
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38.9k
  if (Clang->getFrontendOpts().DisableFree)
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8.10k
    llvm::BuryPointer(std::move(Act));
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38.9k
  return Success;
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38.9k
}
283
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} // namespace clang