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/Options.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: { 75 if (CI.getPreprocessorOutputOpts().RewriteIncludes) 76 return new RewriteIncludesAction(); 77 return new PrintPreprocessedAction(); 78 } 79 80 case RewriteMacros: return new RewriteMacrosAction(); 81 case RewriteObjC: return new RewriteObjCAction(); 82 case RewriteTest: return new RewriteTestAction(); 83 case RunAnalysis: return new ento::AnalysisAction(); 84 case MigrateSource: return new arcmt::MigrateSourceAction(); 85 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 86 } 87 llvm_unreachable("Invalid program action!"); 88 } 89 90 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 91 // Create the underlying action. 92 FrontendAction *Act = CreateFrontendBaseAction(CI); 93 if (!Act) 94 return 0; 95 96 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 97 98 if (FEOpts.FixAndRecompile) { 99 Act = new FixItRecompile(Act); 100 } 101 102 // Potentially wrap the base FE action in an ARC Migrate Tool action. 103 switch (FEOpts.ARCMTAction) { 104 case FrontendOptions::ARCMT_None: 105 break; 106 case FrontendOptions::ARCMT_Check: 107 Act = new arcmt::CheckAction(Act); 108 break; 109 case FrontendOptions::ARCMT_Modify: 110 Act = new arcmt::ModifyAction(Act); 111 break; 112 case FrontendOptions::ARCMT_Migrate: 113 Act = new arcmt::MigrateAction(Act, 114 FEOpts.MTMigrateDir, 115 FEOpts.ARCMTMigrateReportOut, 116 FEOpts.ARCMTMigrateEmitARCErrors); 117 break; 118 } 119 120 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 121 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 122 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals, 123 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting); 124 } 125 126 // If there are any AST files to merge, create a frontend action 127 // adaptor to perform the merge. 128 if (!FEOpts.ASTMergeFiles.empty()) 129 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 130 131 return Act; 132 } 133 134 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 135 // Honor -help. 136 if (Clang->getFrontendOpts().ShowHelp) { 137 OwningPtr<driver::OptTable> Opts(driver::createDriverOptTable()); 138 Opts->PrintHelp(llvm::outs(), "clang -cc1", 139 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 140 return 0; 141 } 142 143 // Honor -version. 144 // 145 // FIXME: Use a better -version message? 146 if (Clang->getFrontendOpts().ShowVersion) { 147 llvm::cl::PrintVersionMessage(); 148 return 0; 149 } 150 151 // Load any requested plugins. 152 for (unsigned i = 0, 153 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 154 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 155 std::string Error; 156 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 157 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 158 << Path << Error; 159 } 160 161 // Honor -mllvm. 162 // 163 // FIXME: Remove this, one day. 164 // This should happen AFTER plugins have been loaded! 165 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 166 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 167 const char **Args = new const char*[NumArgs + 2]; 168 Args[0] = "clang (LLVM option parsing)"; 169 for (unsigned i = 0; i != NumArgs; ++i) 170 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 171 Args[NumArgs + 1] = 0; 172 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 173 } 174 175 // Honor -analyzer-checker-help. 176 // This should happen AFTER plugins have been loaded! 177 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 178 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 179 return 0; 180 } 181 182 // If there were errors in processing arguments, don't do anything else. 183 bool Success = false; 184 if (!Clang->getDiagnostics().hasErrorOccurred()) { 185 // Create and execute the frontend action. 186 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 187 if (Act) { 188 Success = Clang->ExecuteAction(*Act); 189 if (Clang->getFrontendOpts().DisableFree) 190 Act.take(); 191 } 192 } 193 194 return Success; 195 } 196