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 PubnamesDump: return new PubnamesDumpAction(); 76 case RewriteMacros: return new RewriteMacrosAction(); 77 case RewriteObjC: return new RewriteObjCAction(); 78 case RewriteTest: return new RewriteTestAction(); 79 case RunAnalysis: return new ento::AnalysisAction(); 80 case MigrateSource: return new arcmt::MigrateSourceAction(); 81 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 82 } 83 llvm_unreachable("Invalid program action!"); 84 } 85 86 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 87 // Create the underlying action. 88 FrontendAction *Act = CreateFrontendBaseAction(CI); 89 if (!Act) 90 return 0; 91 92 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 93 94 if (FEOpts.FixAndRecompile) { 95 Act = new FixItRecompile(Act); 96 } 97 98 // Potentially wrap the base FE action in an ARC Migrate Tool action. 99 switch (FEOpts.ARCMTAction) { 100 case FrontendOptions::ARCMT_None: 101 break; 102 case FrontendOptions::ARCMT_Check: 103 Act = new arcmt::CheckAction(Act); 104 break; 105 case FrontendOptions::ARCMT_Modify: 106 Act = new arcmt::ModifyAction(Act); 107 break; 108 case FrontendOptions::ARCMT_Migrate: 109 Act = new arcmt::MigrateAction(Act, 110 FEOpts.MTMigrateDir, 111 FEOpts.ARCMTMigrateReportOut, 112 FEOpts.ARCMTMigrateEmitARCErrors); 113 break; 114 } 115 116 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 117 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 118 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals, 119 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting); 120 } 121 122 // If there are any AST files to merge, create a frontend action 123 // adaptor to perform the merge. 124 if (!FEOpts.ASTMergeFiles.empty()) 125 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 126 127 return Act; 128 } 129 130 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 131 // Honor -help. 132 if (Clang->getFrontendOpts().ShowHelp) { 133 OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 134 Opts->PrintHelp(llvm::outs(), "clang -cc1", 135 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 136 return 0; 137 } 138 139 // Honor -version. 140 // 141 // FIXME: Use a better -version message? 142 if (Clang->getFrontendOpts().ShowVersion) { 143 llvm::cl::PrintVersionMessage(); 144 return 0; 145 } 146 147 // Load any requested plugins. 148 for (unsigned i = 0, 149 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 150 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 151 std::string Error; 152 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 153 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 154 << Path << Error; 155 } 156 157 // Honor -mllvm. 158 // 159 // FIXME: Remove this, one day. 160 // This should happen AFTER plugins have been loaded! 161 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 162 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 163 const char **Args = new const char*[NumArgs + 2]; 164 Args[0] = "clang (LLVM option parsing)"; 165 for (unsigned i = 0; i != NumArgs; ++i) 166 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 167 Args[NumArgs + 1] = 0; 168 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 169 } 170 171 // Honor -analyzer-checker-help. 172 // This should happen AFTER plugins have been loaded! 173 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 174 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 175 return 0; 176 } 177 178 // If there were errors in processing arguments, don't do anything else. 179 bool Success = false; 180 if (!Clang->getDiagnostics().hasErrorOccurred()) { 181 // Create and execute the frontend action. 182 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 183 if (Act) { 184 Success = Clang->ExecuteAction(*Act); 185 if (Clang->getFrontendOpts().DisableFree) 186 Act.take(); 187 } 188 } 189 190 return Success; 191 } 192