1 //===--- ExecuteCompilerInvocation.cpp ------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file holds ExecuteCompilerInvocation(). It is split into its own file to 11 // minimize the impact of pulling in essentially everything else in Clang. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "clang/FrontendTool/Utils.h" 16 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h" 17 #include "clang/ARCMigrate/ARCMTActions.h" 18 #include "clang/CodeGen/CodeGenAction.h" 19 #include "clang/Driver/CC1Options.h" 20 #include "clang/Driver/OptTable.h" 21 #include "clang/Frontend/CompilerInvocation.h" 22 #include "clang/Frontend/CompilerInstance.h" 23 #include "clang/Frontend/FrontendActions.h" 24 #include "clang/Frontend/FrontendDiagnostic.h" 25 #include "clang/Frontend/FrontendPluginRegistry.h" 26 #include "clang/Rewrite/FrontendActions.h" 27 #include "llvm/Support/ErrorHandling.h" 28 #include "llvm/Support/DynamicLibrary.h" 29 using namespace clang; 30 31 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) { 32 using namespace clang::frontend; 33 34 switch (CI.getFrontendOpts().ProgramAction) { 35 default: 36 llvm_unreachable("Invalid program action!"); 37 38 case ASTDump: return new ASTDumpAction(); 39 case ASTDumpXML: return new ASTDumpXMLAction(); 40 case ASTPrint: return new ASTPrintAction(); 41 case ASTView: return new ASTViewAction(); 42 case DumpRawTokens: return new DumpRawTokensAction(); 43 case DumpTokens: return new DumpTokensAction(); 44 case EmitAssembly: return new EmitAssemblyAction(); 45 case EmitBC: return new EmitBCAction(); 46 case EmitHTML: return new HTMLPrintAction(); 47 case EmitLLVM: return new EmitLLVMAction(); 48 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 49 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 50 case EmitObj: return new EmitObjAction(); 51 case FixIt: return new FixItAction(); 52 case GenerateModule: return new GeneratePCHAction(true); 53 case GenerateModuleFromMap: return new GenerateModuleAction; 54 case GeneratePCH: return new GeneratePCHAction(false); 55 case GeneratePTH: return new GeneratePTHAction(); 56 case InitOnly: return new InitOnlyAction(); 57 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 58 59 case PluginAction: { 60 for (FrontendPluginRegistry::iterator it = 61 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 62 it != ie; ++it) { 63 if (it->getName() == CI.getFrontendOpts().ActionName) { 64 llvm::OwningPtr<PluginASTAction> P(it->instantiate()); 65 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 66 return 0; 67 return P.take(); 68 } 69 } 70 71 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 72 << CI.getFrontendOpts().ActionName; 73 return 0; 74 } 75 76 case PrintDeclContext: return new DeclContextPrintAction(); 77 case PrintPreamble: return new PrintPreambleAction(); 78 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 79 case RewriteMacros: return new RewriteMacrosAction(); 80 case RewriteObjC: return new RewriteObjCAction(); 81 case RewriteTest: return new RewriteTestAction(); 82 case RunAnalysis: return new ento::AnalysisAction(); 83 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 84 } 85 } 86 87 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 88 // Create the underlying action. 89 FrontendAction *Act = CreateFrontendBaseAction(CI); 90 if (!Act) 91 return 0; 92 93 // Potentially wrap the base FE action in an ARC Migrate Tool action. 94 switch (CI.getFrontendOpts().ARCMTAction) { 95 case FrontendOptions::ARCMT_None: 96 break; 97 case FrontendOptions::ARCMT_Check: 98 Act = new arcmt::CheckAction(Act); 99 break; 100 case FrontendOptions::ARCMT_Modify: 101 Act = new arcmt::ModifyAction(Act); 102 break; 103 case FrontendOptions::ARCMT_Migrate: 104 Act = new arcmt::MigrateAction(Act, 105 CI.getFrontendOpts().ARCMTMigrateDir, 106 CI.getFrontendOpts().ARCMTMigrateReportOut, 107 CI.getFrontendOpts().ARCMTMigrateEmitARCErrors); 108 break; 109 } 110 111 // If there are any AST files to merge, create a frontend action 112 // adaptor to perform the merge. 113 if (!CI.getFrontendOpts().ASTMergeFiles.empty()) 114 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0], 115 CI.getFrontendOpts().ASTMergeFiles.size()); 116 117 return Act; 118 } 119 120 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 121 // Honor -help. 122 if (Clang->getFrontendOpts().ShowHelp) { 123 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 124 Opts->PrintHelp(llvm::outs(), "clang -cc1", 125 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 126 return 0; 127 } 128 129 // Honor -version. 130 // 131 // FIXME: Use a better -version message? 132 if (Clang->getFrontendOpts().ShowVersion) { 133 llvm::cl::PrintVersionMessage(); 134 return 0; 135 } 136 137 // Load any requested plugins. 138 for (unsigned i = 0, 139 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 140 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 141 std::string Error; 142 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 143 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 144 << Path << Error; 145 } 146 147 // Honor -mllvm. 148 // 149 // FIXME: Remove this, one day. 150 // This should happen AFTER plugins have been loaded! 151 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 152 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 153 const char **Args = new const char*[NumArgs + 2]; 154 Args[0] = "clang (LLVM option parsing)"; 155 for (unsigned i = 0; i != NumArgs; ++i) 156 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 157 Args[NumArgs + 1] = 0; 158 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args)); 159 } 160 161 // Honor -analyzer-checker-help. 162 // This should happen AFTER plugins have been loaded! 163 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 164 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 165 return 0; 166 } 167 168 // If there were errors in processing arguments, don't do anything else. 169 bool Success = false; 170 if (!Clang->getDiagnostics().hasErrorOccurred()) { 171 // Create and execute the frontend action. 172 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 173 if (Act) { 174 Success = Clang->ExecuteAction(*Act); 175 if (Clang->getFrontendOpts().DisableFree) 176 Act.take(); 177 } 178 } 179 180 return Success; 181 } 182