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 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 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 91 92 if (FEOpts.FixAndRecompile) { 93 Act = new FixItRecompile(Act); 94 } 95 96 // Potentially wrap the base FE action in an ARC Migrate Tool action. 97 switch (FEOpts.ARCMTAction) { 98 case FrontendOptions::ARCMT_None: 99 break; 100 case FrontendOptions::ARCMT_Check: 101 Act = new arcmt::CheckAction(Act); 102 break; 103 case FrontendOptions::ARCMT_Modify: 104 Act = new arcmt::ModifyAction(Act); 105 break; 106 case FrontendOptions::ARCMT_Migrate: 107 Act = new arcmt::MigrateAction(Act, 108 FEOpts.ARCMTMigrateDir, 109 FEOpts.ARCMTMigrateReportOut, 110 FEOpts.ARCMTMigrateEmitARCErrors); 111 break; 112 } 113 114 // If there are any AST files to merge, create a frontend action 115 // adaptor to perform the merge. 116 if (!FEOpts.ASTMergeFiles.empty()) 117 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 118 119 return Act; 120 } 121 122 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 123 // Honor -help. 124 if (Clang->getFrontendOpts().ShowHelp) { 125 OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 126 Opts->PrintHelp(llvm::outs(), "clang -cc1", 127 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 128 return 0; 129 } 130 131 // Honor -version. 132 // 133 // FIXME: Use a better -version message? 134 if (Clang->getFrontendOpts().ShowVersion) { 135 llvm::cl::PrintVersionMessage(); 136 return 0; 137 } 138 139 // Load any requested plugins. 140 for (unsigned i = 0, 141 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 142 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 143 std::string Error; 144 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 145 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 146 << Path << Error; 147 } 148 149 // Honor -mllvm. 150 // 151 // FIXME: Remove this, one day. 152 // This should happen AFTER plugins have been loaded! 153 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 154 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 155 const char **Args = new const char*[NumArgs + 2]; 156 Args[0] = "clang (LLVM option parsing)"; 157 for (unsigned i = 0; i != NumArgs; ++i) 158 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 159 Args[NumArgs + 1] = 0; 160 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 161 } 162 163 // Honor -analyzer-checker-help. 164 // This should happen AFTER plugins have been loaded! 165 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 166 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 167 return 0; 168 } 169 170 // If there were errors in processing arguments, don't do anything else. 171 bool Success = false; 172 if (!Clang->getDiagnostics().hasErrorOccurred()) { 173 // Create and execute the frontend action. 174 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 175 if (Act) { 176 Success = Clang->ExecuteAction(*Act); 177 if (Clang->getFrontendOpts().DisableFree) 178 Act.take(); 179 } 180 } 181 182 return Success; 183 } 184