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" 29using namespace clang; 30 31static 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 DumpRawTokens: return new DumpRawTokensAction(); 43 case DumpTokens: return new DumpTokensAction(); 44 case EmitAssembly: return new EmitAssemblyAction(); 45 case EmitBC: return new EmitBCAction(); 46 case EmitHTML: return new HTMLPrintAction(); 47 case EmitLLVM: return new EmitLLVMAction(); 48 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 49 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 50 case EmitObj: return new EmitObjAction(); 51 case FixIt: return new FixItAction(); 52 case GenerateModule: return new GeneratePCHAction(true); 53 case GeneratePCH: return new GeneratePCHAction(false); 54 case GeneratePTH: return new GeneratePTHAction(); 55 case InitOnly: return new InitOnlyAction(); 56 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 57 58 case PluginAction: { 59 for (FrontendPluginRegistry::iterator it = 60 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 61 it != ie; ++it) { 62 if (it->getName() == CI.getFrontendOpts().ActionName) { 63 llvm::OwningPtr<PluginASTAction> P(it->instantiate()); 64 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 65 return 0; 66 return P.take(); 67 } 68 } 69 70 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 71 << CI.getFrontendOpts().ActionName; 72 return 0; 73 } 74 75 case PrintDeclContext: return new DeclContextPrintAction(); 76 case PrintPreamble: return new PrintPreambleAction(); 77 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 78 case RewriteMacros: return new RewriteMacrosAction(); 79 case RewriteObjC: return new RewriteObjCAction(); 80 case RewriteTest: return new RewriteTestAction(); 81 case RunAnalysis: return new ento::AnalysisAction(); 82 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 83 } 84} 85 86static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 87 // Create the underlying action. 88 FrontendAction *Act = CreateFrontendBaseAction(CI); 89 if (!Act) 90 return 0; 91 92 // Potentially wrap the base FE action in an ARC Migrate Tool action. 93 switch (CI.getFrontendOpts().ARCMTAction) { 94 case FrontendOptions::ARCMT_None: 95 break; 96 case FrontendOptions::ARCMT_Check: 97 Act = new arcmt::CheckAction(Act); 98 break; 99 case FrontendOptions::ARCMT_Modify: 100 Act = new arcmt::ModifyAction(Act); 101 break; 102 case FrontendOptions::ARCMT_Migrate: 103 Act = new arcmt::MigrateAction(Act, 104 CI.getFrontendOpts().ARCMTMigrateDir, 105 CI.getFrontendOpts().ARCMTMigrateReportOut, 106 CI.getFrontendOpts().ARCMTMigrateEmitARCErrors); 107 break; 108 } 109 110 // If there are any AST files to merge, create a frontend action 111 // adaptor to perform the merge. 112 if (!CI.getFrontendOpts().ASTMergeFiles.empty()) 113 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0], 114 CI.getFrontendOpts().ASTMergeFiles.size()); 115 116 return Act; 117} 118 119bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 120 // Honor -help. 121 if (Clang->getFrontendOpts().ShowHelp) { 122 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 123 Opts->PrintHelp(llvm::outs(), "clang -cc1", 124 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 125 return 0; 126 } 127 128 // Honor -version. 129 // 130 // FIXME: Use a better -version message? 131 if (Clang->getFrontendOpts().ShowVersion) { 132 llvm::cl::PrintVersionMessage(); 133 return 0; 134 } 135 136 // Load any requested plugins. 137 for (unsigned i = 0, 138 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 139 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 140 std::string Error; 141 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 142 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 143 << Path << Error; 144 } 145 146 // Honor -mllvm. 147 // 148 // FIXME: Remove this, one day. 149 // This should happen AFTER plugins have been loaded! 150 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 151 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 152 const char **Args = new const char*[NumArgs + 2]; 153 Args[0] = "clang (LLVM option parsing)"; 154 for (unsigned i = 0; i != NumArgs; ++i) 155 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 156 Args[NumArgs + 1] = 0; 157 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args)); 158 } 159 160 // Honor -analyzer-checker-help. 161 // This should happen AFTER plugins have been loaded! 162 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 163 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 164 return 0; 165 } 166 167 // If there were errors in processing arguments, don't do anything else. 168 bool Success = false; 169 if (!Clang->getDiagnostics().hasErrorOccurred()) { 170 // Create and execute the frontend action. 171 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 172 if (Act) { 173 Success = Clang->ExecuteAction(*Act); 174 if (Clang->getFrontendOpts().DisableFree) 175 Act.take(); 176 } 177 } 178 179 return Success; 180} 181