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 default: 36 llvm_unreachable("Invalid program action!"); 37 38 case ASTDump: return new ASTDumpAction(); 39 case ASTDumpXML: return new ASTDumpXMLAction(); 40 case ASTPrint: return new ASTPrintAction(); 41 case ASTView: return new ASTViewAction(); 42 case BoostCon: return new BoostConAction(); 43 case CreateModule: return 0; 44 case DumpRawTokens: return new DumpRawTokensAction(); 45 case DumpTokens: return new DumpTokensAction(); 46 case EmitAssembly: return new EmitAssemblyAction(); 47 case EmitBC: return new EmitBCAction(); 48 case EmitHTML: return new HTMLPrintAction(); 49 case EmitLLVM: return new EmitLLVMAction(); 50 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 51 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 52 case EmitObj: return new EmitObjAction(); 53 case FixIt: return new FixItAction(); 54 case GeneratePCH: return new GeneratePCHAction(); 55 case GeneratePTH: return new GeneratePTHAction(); 56 case InitOnly: return new InitOnlyAction(); 57 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 58 59 case PluginAction: { 60 for (FrontendPluginRegistry::iterator it = 61 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 62 it != ie; ++it) { 63 if (it->getName() == CI.getFrontendOpts().ActionName) { 64 llvm::OwningPtr<PluginASTAction> P(it->instantiate()); 65 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 66 return 0; 67 return P.take(); 68 } 69 } 70 71 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 72 << CI.getFrontendOpts().ActionName; 73 return 0; 74 } 75 76 case PrintDeclContext: return new DeclContextPrintAction(); 77 case PrintPreamble: return new PrintPreambleAction(); 78 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 79 case RewriteMacros: return new RewriteMacrosAction(); 80 case RewriteObjC: return new RewriteObjCAction(); 81 case RewriteTest: return new RewriteTestAction(); 82 case RunAnalysis: return new ento::AnalysisAction(); 83 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 84 } 85 } 86 87 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 88 // Create the underlying action. 89 FrontendAction *Act = CreateFrontendBaseAction(CI); 90 if (!Act) 91 return 0; 92 93 // Potentially wrap the base FE action in an ARC Migrate Tool action. 94 switch (CI.getFrontendOpts().ARCMTAction) { 95 case FrontendOptions::ARCMT_None: 96 break; 97 case FrontendOptions::ARCMT_Check: 98 Act = new arcmt::CheckAction(Act); 99 break; 100 case FrontendOptions::ARCMT_Modify: 101 Act = new arcmt::TransformationAction(Act); 102 break; 103 case FrontendOptions::ARCMT_ModifyInMemory: 104 Act = new arcmt::InMemoryTransformationAction(Act); 105 break; 106 } 107 108 // If there are any AST files to merge, create a frontend action 109 // adaptor to perform the merge. 110 if (!CI.getFrontendOpts().ASTMergeFiles.empty()) 111 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0], 112 CI.getFrontendOpts().ASTMergeFiles.size()); 113 114 return Act; 115 } 116 117 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 118 // Honor -help. 119 if (Clang->getFrontendOpts().ShowHelp) { 120 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 121 Opts->PrintHelp(llvm::outs(), "clang -cc1", 122 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 123 return 0; 124 } 125 126 // Honor -analyzer-checker-help. 127 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 128 ento::printCheckerHelp(llvm::outs()); 129 return 0; 130 } 131 132 // Honor -version. 133 // 134 // FIXME: Use a better -version message? 135 if (Clang->getFrontendOpts().ShowVersion) { 136 llvm::cl::PrintVersionMessage(); 137 return 0; 138 } 139 140 // Honor -mllvm. 141 // 142 // FIXME: Remove this, one day. 143 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 144 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 145 const char **Args = new const char*[NumArgs + 2]; 146 Args[0] = "clang (LLVM option parsing)"; 147 for (unsigned i = 0; i != NumArgs; ++i) 148 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 149 Args[NumArgs + 1] = 0; 150 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args)); 151 } 152 153 // Load any requested plugins. 154 for (unsigned i = 0, 155 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 156 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 157 std::string Error; 158 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 159 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 160 << Path << Error; 161 } 162 163 // If there were errors in processing arguments, don't do anything else. 164 bool Success = false; 165 if (!Clang->getDiagnostics().hasErrorOccurred()) { 166 // Create and execute the frontend action. 167 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 168 if (Act) { 169 Success = Clang->ExecuteAction(*Act); 170 if (Clang->getFrontendOpts().DisableFree) 171 Act.take(); 172 } 173 } 174 175 return Success; 176 } 177