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/EntoSA/FrontendActions.h" 17 #include "clang/CodeGen/CodeGenAction.h" 18 #include "clang/Driver/CC1Options.h" 19 #include "clang/Driver/OptTable.h" 20 #include "clang/Frontend/CompilerInvocation.h" 21 #include "clang/Frontend/CompilerInstance.h" 22 #include "clang/Frontend/FrontendActions.h" 23 #include "clang/Frontend/FrontendDiagnostic.h" 24 #include "clang/Frontend/FrontendPluginRegistry.h" 25 #include "clang/Rewrite/FrontendActions.h" 26 #include "llvm/Support/ErrorHandling.h" 27 #include "llvm/Support/DynamicLibrary.h" 28 using namespace clang; 29 30 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) { 31 using namespace clang::frontend; 32 33 switch (CI.getFrontendOpts().ProgramAction) { 34 default: 35 llvm_unreachable("Invalid program action!"); 36 37 case ASTDump: return new ASTDumpAction(); 38 case ASTDumpXML: return new ASTDumpXMLAction(); 39 case ASTPrint: return new ASTPrintAction(); 40 case ASTPrintXML: return new ASTPrintXMLAction(); 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 InheritanceView: return new InheritanceViewAction(); 57 case InitOnly: return new InitOnlyAction(); 58 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 59 60 case PluginAction: { 61 for (FrontendPluginRegistry::iterator it = 62 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 63 it != ie; ++it) { 64 if (it->getName() == CI.getFrontendOpts().ActionName) { 65 llvm::OwningPtr<PluginASTAction> P(it->instantiate()); 66 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 67 return 0; 68 return P.take(); 69 } 70 } 71 72 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 73 << CI.getFrontendOpts().ActionName; 74 return 0; 75 } 76 77 case PrintDeclContext: return new DeclContextPrintAction(); 78 case PrintPreamble: return new PrintPreambleAction(); 79 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 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 RunPreprocessorOnly: return new PreprocessOnlyAction(); 85 } 86 } 87 88 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 89 // Create the underlying action. 90 FrontendAction *Act = CreateFrontendBaseAction(CI); 91 if (!Act) 92 return 0; 93 94 // If there are any AST files to merge, create a frontend action 95 // adaptor to perform the merge. 96 if (!CI.getFrontendOpts().ASTMergeFiles.empty()) 97 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0], 98 CI.getFrontendOpts().ASTMergeFiles.size()); 99 100 return Act; 101 } 102 103 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 104 // Honor -help. 105 if (Clang->getFrontendOpts().ShowHelp) { 106 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 107 Opts->PrintHelp(llvm::outs(), "clang -cc1", 108 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 109 return 0; 110 } 111 112 // Honor -version. 113 // 114 // FIXME: Use a better -version message? 115 if (Clang->getFrontendOpts().ShowVersion) { 116 llvm::cl::PrintVersionMessage(); 117 return 0; 118 } 119 120 // Honor -mllvm. 121 // 122 // FIXME: Remove this, one day. 123 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 124 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 125 const char **Args = new const char*[NumArgs + 2]; 126 Args[0] = "clang (LLVM option parsing)"; 127 for (unsigned i = 0; i != NumArgs; ++i) 128 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 129 Args[NumArgs + 1] = 0; 130 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args)); 131 } 132 133 // Load any requested plugins. 134 for (unsigned i = 0, 135 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 136 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 137 std::string Error; 138 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 139 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 140 << Path << Error; 141 } 142 143 // If there were errors in processing arguments, don't do anything else. 144 bool Success = false; 145 if (!Clang->getDiagnostics().hasErrorOccurred()) { 146 // Create and execute the frontend action. 147 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 148 if (Act) { 149 Success = Clang->ExecuteAction(*Act); 150 if (Clang->getFrontendOpts().DisableFree) 151 Act.take(); 152 } 153 } 154 155 return Success; 156 } 157