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 ASTDeclList: return new ASTDeclListAction(); 36 case ASTDump: return new ASTDumpAction(); 37 case ASTDumpXML: return new ASTDumpXMLAction(); 38 case ASTPrint: return new ASTPrintAction(); 39 case ASTView: return new ASTViewAction(); 40 case DumpRawTokens: return new DumpRawTokensAction(); 41 case DumpTokens: return new DumpTokensAction(); 42 case EmitAssembly: return new EmitAssemblyAction(); 43 case EmitBC: return new EmitBCAction(); 44 case EmitHTML: return new HTMLPrintAction(); 45 case EmitLLVM: return new EmitLLVMAction(); 46 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 47 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 48 case EmitObj: return new EmitObjAction(); 49 case FixIt: return new FixItAction(); 50 case GenerateModule: return new GenerateModuleAction; 51 case GeneratePCH: return new GeneratePCHAction; 52 case GeneratePTH: return new GeneratePTHAction(); 53 case InitOnly: return new InitOnlyAction(); 54 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 55 56 case PluginAction: { 57 for (FrontendPluginRegistry::iterator it = 58 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 59 it != ie; ++it) { 60 if (it->getName() == CI.getFrontendOpts().ActionName) { 61 OwningPtr<PluginASTAction> P(it->instantiate()); 62 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 63 return 0; 64 return P.take(); 65 } 66 } 67 68 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 69 << CI.getFrontendOpts().ActionName; 70 return 0; 71 } 72 73 case PrintDeclContext: return new DeclContextPrintAction(); 74 case PrintPreamble: return new PrintPreambleAction(); 75 case PrintPreprocessedInput: { 76 if (CI.getPreprocessorOutputOpts().RewriteIncludes) 77 return new RewriteIncludesAction(); 78 return new PrintPreprocessedAction(); 79 } 80 81 case RewriteMacros: return new RewriteMacrosAction(); 82 case RewriteObjC: return new RewriteObjCAction(); 83 case RewriteTest: return new RewriteTestAction(); 84 case RunAnalysis: return new ento::AnalysisAction(); 85 case MigrateSource: return new arcmt::MigrateSourceAction(); 86 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 87 } 88 llvm_unreachable("Invalid program action!"); 89 } 90 91 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 92 // Create the underlying action. 93 FrontendAction *Act = CreateFrontendBaseAction(CI); 94 if (!Act) 95 return 0; 96 97 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 98 99 if (FEOpts.FixAndRecompile) { 100 Act = new FixItRecompile(Act); 101 } 102 103 // Potentially wrap the base FE action in an ARC Migrate Tool action. 104 switch (FEOpts.ARCMTAction) { 105 case FrontendOptions::ARCMT_None: 106 break; 107 case FrontendOptions::ARCMT_Check: 108 Act = new arcmt::CheckAction(Act); 109 break; 110 case FrontendOptions::ARCMT_Modify: 111 Act = new arcmt::ModifyAction(Act); 112 break; 113 case FrontendOptions::ARCMT_Migrate: 114 Act = new arcmt::MigrateAction(Act, 115 FEOpts.MTMigrateDir, 116 FEOpts.ARCMTMigrateReportOut, 117 FEOpts.ARCMTMigrateEmitARCErrors); 118 break; 119 } 120 121 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 122 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 123 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals, 124 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting); 125 } 126 127 // If there are any AST files to merge, create a frontend action 128 // adaptor to perform the merge. 129 if (!FEOpts.ASTMergeFiles.empty()) 130 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 131 132 return Act; 133 } 134 135 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 136 // Honor -help. 137 if (Clang->getFrontendOpts().ShowHelp) { 138 OwningPtr<driver::OptTable> Opts(driver::createDriverOptTable()); 139 Opts->PrintHelp(llvm::outs(), "clang -cc1", 140 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 141 return 0; 142 } 143 144 // Honor -version. 145 // 146 // FIXME: Use a better -version message? 147 if (Clang->getFrontendOpts().ShowVersion) { 148 llvm::cl::PrintVersionMessage(); 149 return 0; 150 } 151 152 // Load any requested plugins. 153 for (unsigned i = 0, 154 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 155 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 156 std::string Error; 157 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 158 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 159 << Path << Error; 160 } 161 162 // Honor -mllvm. 163 // 164 // FIXME: Remove this, one day. 165 // This should happen AFTER plugins have been loaded! 166 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 167 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 168 const char **Args = new const char*[NumArgs + 2]; 169 Args[0] = "clang (LLVM option parsing)"; 170 for (unsigned i = 0; i != NumArgs; ++i) 171 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 172 Args[NumArgs + 1] = 0; 173 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 174 } 175 176 // Honor -analyzer-checker-help. 177 // This should happen AFTER plugins have been loaded! 178 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 179 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 180 return 0; 181 } 182 183 // If there were errors in processing arguments, don't do anything else. 184 bool Success = false; 185 if (!Clang->getDiagnostics().hasErrorOccurred()) { 186 // Create and execute the frontend action. 187 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 188 if (Act) { 189 Success = Clang->ExecuteAction(*Act); 190 if (Clang->getFrontendOpts().DisableFree) 191 Act.take(); 192 } 193 } 194 195 return Success; 196 } 197