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 case ASTDump: return new ASTDumpAction(); 36 case ASTDumpXML: return new ASTDumpXMLAction(); 37 case ASTPrint: return new ASTPrintAction(); 38 case ASTView: return new ASTViewAction(); 39 case DumpRawTokens: return new DumpRawTokensAction(); 40 case DumpTokens: return new DumpTokensAction(); 41 case EmitAssembly: return new EmitAssemblyAction(); 42 case EmitBC: return new EmitBCAction(); 43 case EmitHTML: return new HTMLPrintAction(); 44 case EmitLLVM: return new EmitLLVMAction(); 45 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 46 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 47 case EmitObj: return new EmitObjAction(); 48 case FixIt: return new FixItAction(); 49 case GenerateModule: return new GenerateModuleAction; 50 case GeneratePCH: return new GeneratePCHAction; 51 case GeneratePTH: return new GeneratePTHAction(); 52 case InitOnly: return new InitOnlyAction(); 53 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 54 55 case PluginAction: { 56 for (FrontendPluginRegistry::iterator it = 57 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 58 it != ie; ++it) { 59 if (it->getName() == CI.getFrontendOpts().ActionName) { 60 llvm::OwningPtr<PluginASTAction> P(it->instantiate()); 61 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 62 return 0; 63 return P.take(); 64 } 65 } 66 67 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 68 << CI.getFrontendOpts().ActionName; 69 return 0; 70 } 71 72 case PrintDeclContext: return new DeclContextPrintAction(); 73 case PrintPreamble: return new PrintPreambleAction(); 74 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 75 case RewriteMacros: return new RewriteMacrosAction(); 76 case RewriteObjC: return new RewriteObjCAction(); 77 case RewriteTest: return new RewriteTestAction(); 78 case RunAnalysis: return new ento::AnalysisAction(); 79 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 80 } 81 llvm_unreachable("Invalid program action!"); 82 } 83 84 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 85 // Create the underlying action. 86 FrontendAction *Act = CreateFrontendBaseAction(CI); 87 if (!Act) 88 return 0; 89 90 if (CI.getFrontendOpts().FixAndRecompile) { 91 Act = new FixItRecompile(Act); 92 } 93 94 // Potentially wrap the base FE action in an ARC Migrate Tool action. 95 switch (CI.getFrontendOpts().ARCMTAction) { 96 case FrontendOptions::ARCMT_None: 97 break; 98 case FrontendOptions::ARCMT_Check: 99 Act = new arcmt::CheckAction(Act); 100 break; 101 case FrontendOptions::ARCMT_Modify: 102 Act = new arcmt::ModifyAction(Act); 103 break; 104 case FrontendOptions::ARCMT_Migrate: 105 Act = new arcmt::MigrateAction(Act, 106 CI.getFrontendOpts().ARCMTMigrateDir, 107 CI.getFrontendOpts().ARCMTMigrateReportOut, 108 CI.getFrontendOpts().ARCMTMigrateEmitARCErrors); 109 break; 110 } 111 112 // If there are any AST files to merge, create a frontend action 113 // adaptor to perform the merge. 114 if (!CI.getFrontendOpts().ASTMergeFiles.empty()) 115 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0], 116 CI.getFrontendOpts().ASTMergeFiles.size()); 117 118 return Act; 119 } 120 121 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 122 // Honor -help. 123 if (Clang->getFrontendOpts().ShowHelp) { 124 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 125 Opts->PrintHelp(llvm::outs(), "clang -cc1", 126 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 127 return 0; 128 } 129 130 // Honor -version. 131 // 132 // FIXME: Use a better -version message? 133 if (Clang->getFrontendOpts().ShowVersion) { 134 llvm::cl::PrintVersionMessage(); 135 return 0; 136 } 137 138 // Load any requested plugins. 139 for (unsigned i = 0, 140 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 141 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 142 std::string Error; 143 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 144 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 145 << Path << Error; 146 } 147 148 // Honor -mllvm. 149 // 150 // FIXME: Remove this, one day. 151 // This should happen AFTER plugins have been loaded! 152 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 153 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 154 const char **Args = new const char*[NumArgs + 2]; 155 Args[0] = "clang (LLVM option parsing)"; 156 for (unsigned i = 0; i != NumArgs; ++i) 157 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 158 Args[NumArgs + 1] = 0; 159 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args)); 160 } 161 162 // Honor -analyzer-checker-help. 163 // This should happen AFTER plugins have been loaded! 164 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 165 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 166 return 0; 167 } 168 169 // If there were errors in processing arguments, don't do anything else. 170 bool Success = false; 171 if (!Clang->getDiagnostics().hasErrorOccurred()) { 172 // Create and execute the frontend action. 173 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 174 if (Act) { 175 Success = Clang->ExecuteAction(*Act); 176 if (Clang->getFrontendOpts().DisableFree) 177 Act.take(); 178 } 179 } 180 181 return Success; 182 } 183