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/ARCMigrate/ARCMTActions.h" 17 #include "clang/CodeGen/CodeGenAction.h" 18 #include "clang/Driver/OptTable.h" 19 #include "clang/Driver/Option.h" 20 #include "clang/Driver/Options.h" 21 #include "clang/Frontend/CompilerInstance.h" 22 #include "clang/Frontend/CompilerInvocation.h" 23 #include "clang/Frontend/FrontendActions.h" 24 #include "clang/Frontend/FrontendDiagnostic.h" 25 #include "clang/Frontend/FrontendPluginRegistry.h" 26 #include "clang/Rewrite/Frontend/FrontendActions.h" 27 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h" 28 #include "llvm/Support/DynamicLibrary.h" 29 #include "llvm/Support/ErrorHandling.h" 30 using namespace clang; 31 32 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) { 33 using namespace clang::frontend; 34 35 switch (CI.getFrontendOpts().ProgramAction) { 36 case ASTDeclList: return new ASTDeclListAction(); 37 case ASTDump: return new ASTDumpAction(); 38 case ASTDumpXML: return new ASTDumpXMLAction(); 39 case ASTPrint: return new ASTPrintAction(); 40 case ASTView: return new ASTViewAction(); 41 case DumpRawTokens: return new DumpRawTokensAction(); 42 case DumpTokens: return new DumpTokensAction(); 43 case EmitAssembly: return new EmitAssemblyAction(); 44 case EmitBC: return new EmitBCAction(); 45 case EmitHTML: return new HTMLPrintAction(); 46 case EmitLLVM: return new EmitLLVMAction(); 47 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 48 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 49 case EmitObj: return new EmitObjAction(); 50 case FixIt: return new FixItAction(); 51 case GenerateModule: return new GenerateModuleAction; 52 case GeneratePCH: return new GeneratePCHAction; 53 case GeneratePTH: return new GeneratePTHAction(); 54 case InitOnly: return new InitOnlyAction(); 55 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 56 57 case PluginAction: { 58 for (FrontendPluginRegistry::iterator it = 59 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 60 it != ie; ++it) { 61 if (it->getName() == CI.getFrontendOpts().ActionName) { 62 OwningPtr<PluginASTAction> P(it->instantiate()); 63 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 64 return 0; 65 return P.take(); 66 } 67 } 68 69 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 70 << CI.getFrontendOpts().ActionName; 71 return 0; 72 } 73 74 case PrintDeclContext: return new DeclContextPrintAction(); 75 case PrintPreamble: return new PrintPreambleAction(); 76 case PrintPreprocessedInput: { 77 if (CI.getPreprocessorOutputOpts().RewriteIncludes) 78 return new RewriteIncludesAction(); 79 return new PrintPreprocessedAction(); 80 } 81 82 case RewriteMacros: return new RewriteMacrosAction(); 83 case RewriteObjC: return new RewriteObjCAction(); 84 case RewriteTest: return new RewriteTestAction(); 85 case RunAnalysis: return new ento::AnalysisAction(); 86 case MigrateSource: return new arcmt::MigrateSourceAction(); 87 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 88 } 89 llvm_unreachable("Invalid program action!"); 90 } 91 92 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 93 // Create the underlying action. 94 FrontendAction *Act = CreateFrontendBaseAction(CI); 95 if (!Act) 96 return 0; 97 98 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 99 100 if (FEOpts.FixAndRecompile) { 101 Act = new FixItRecompile(Act); 102 } 103 104 // Potentially wrap the base FE action in an ARC Migrate Tool action. 105 switch (FEOpts.ARCMTAction) { 106 case FrontendOptions::ARCMT_None: 107 break; 108 case FrontendOptions::ARCMT_Check: 109 Act = new arcmt::CheckAction(Act); 110 break; 111 case FrontendOptions::ARCMT_Modify: 112 Act = new arcmt::ModifyAction(Act); 113 break; 114 case FrontendOptions::ARCMT_Migrate: 115 Act = new arcmt::MigrateAction(Act, 116 FEOpts.MTMigrateDir, 117 FEOpts.ARCMTMigrateReportOut, 118 FEOpts.ARCMTMigrateEmitARCErrors); 119 break; 120 } 121 122 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 123 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 124 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals, 125 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting); 126 } 127 128 // If there are any AST files to merge, create a frontend action 129 // adaptor to perform the merge. 130 if (!FEOpts.ASTMergeFiles.empty()) 131 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 132 133 return Act; 134 } 135 136 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 137 // Honor -help. 138 if (Clang->getFrontendOpts().ShowHelp) { 139 OwningPtr<driver::OptTable> Opts(driver::createDriverOptTable()); 140 Opts->PrintHelp(llvm::outs(), "clang -cc1", 141 "LLVM 'Clang' Compiler: http://clang.llvm.org", 142 /*Include=*/driver::options::CC1Option, 143 /*Exclude=*/0); 144 return 0; 145 } 146 147 // Honor -version. 148 // 149 // FIXME: Use a better -version message? 150 if (Clang->getFrontendOpts().ShowVersion) { 151 llvm::cl::PrintVersionMessage(); 152 return 0; 153 } 154 155 // Load any requested plugins. 156 for (unsigned i = 0, 157 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 158 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 159 std::string Error; 160 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 161 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 162 << Path << Error; 163 } 164 165 // Honor -mllvm. 166 // 167 // FIXME: Remove this, one day. 168 // This should happen AFTER plugins have been loaded! 169 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 170 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 171 const char **Args = new const char*[NumArgs + 2]; 172 Args[0] = "clang (LLVM option parsing)"; 173 for (unsigned i = 0; i != NumArgs; ++i) 174 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 175 Args[NumArgs + 1] = 0; 176 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 177 } 178 179 // Honor -analyzer-checker-help. 180 // This should happen AFTER plugins have been loaded! 181 if (Clang->getAnalyzerOpts()->ShowCheckerHelp) { 182 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 183 return 0; 184 } 185 186 // If there were errors in processing arguments, don't do anything else. 187 bool Success = false; 188 if (!Clang->getDiagnostics().hasErrorOccurred()) { 189 // Create and execute the frontend action. 190 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 191 if (Act) { 192 Success = Clang->ExecuteAction(*Act); 193 if (Clang->getFrontendOpts().DisableFree) 194 Act.take(); 195 } 196 } 197 198 return Success; 199 } 200