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 case ASTDump: return new ASTDumpAction(); 36 case ASTDumpXML: return new ASTDumpXMLAction(); 37 case ASTPrint: return new ASTPrintAction(); 38 case ASTView: return new ASTViewAction(); 39 case DumpRawTokens: return new DumpRawTokensAction(); 40 case DumpTokens: return new DumpTokensAction(); 41 case EmitAssembly: return new EmitAssemblyAction(); 42 case EmitBC: return new EmitBCAction(); 43 case EmitHTML: return new HTMLPrintAction(); 44 case EmitLLVM: return new EmitLLVMAction(); 45 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 46 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 47 case EmitObj: return new EmitObjAction(); 48 case FixIt: return new FixItAction(); 49 case GenerateModule: return new GenerateModuleAction; 50 case GeneratePCH: return new GeneratePCHAction; 51 case GeneratePTH: return new GeneratePTHAction(); 52 case InitOnly: return new InitOnlyAction(); 53 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 54 55 case PluginAction: { 56 for (FrontendPluginRegistry::iterator it = 57 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 58 it != ie; ++it) { 59 if (it->getName() == CI.getFrontendOpts().ActionName) { 60 OwningPtr<PluginASTAction> P(it->instantiate()); 61 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 62 return 0; 63 return P.take(); 64 } 65 } 66 67 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 68 << CI.getFrontendOpts().ActionName; 69 return 0; 70 } 71 72 case PrintDeclContext: return new DeclContextPrintAction(); 73 case PrintPreamble: return new PrintPreambleAction(); 74 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 75 case RewriteMacros: return new RewriteMacrosAction(); 76 case RewriteObjC: return new RewriteObjCAction(); 77 case RewriteTest: return new RewriteTestAction(); 78 case RunAnalysis: return new ento::AnalysisAction(); 79 case MigrateSource: return new arcmt::MigrateSourceAction(); 80 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 81 } 82 llvm_unreachable("Invalid program action!"); 83} 84 85static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 86 // Create the underlying action. 87 FrontendAction *Act = CreateFrontendBaseAction(CI); 88 if (!Act) 89 return 0; 90 91 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 92 93 if (FEOpts.FixAndRecompile) { 94 Act = new FixItRecompile(Act); 95 } 96 97 // Potentially wrap the base FE action in an ARC Migrate Tool action. 98 switch (FEOpts.ARCMTAction) { 99 case FrontendOptions::ARCMT_None: 100 break; 101 case FrontendOptions::ARCMT_Check: 102 Act = new arcmt::CheckAction(Act); 103 break; 104 case FrontendOptions::ARCMT_Modify: 105 Act = new arcmt::ModifyAction(Act); 106 break; 107 case FrontendOptions::ARCMT_Migrate: 108 Act = new arcmt::MigrateAction(Act, 109 FEOpts.MTMigrateDir, 110 FEOpts.ARCMTMigrateReportOut, 111 FEOpts.ARCMTMigrateEmitARCErrors); 112 break; 113 } 114 115 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 116 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 117 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals, 118 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting); 119 } 120 121 // If there are any AST files to merge, create a frontend action 122 // adaptor to perform the merge. 123 if (!FEOpts.ASTMergeFiles.empty()) 124 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 125 126 return Act; 127} 128 129bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 130 // Honor -help. 131 if (Clang->getFrontendOpts().ShowHelp) { 132 OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 133 Opts->PrintHelp(llvm::outs(), "clang -cc1", 134 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 135 return 0; 136 } 137 138 // Honor -version. 139 // 140 // FIXME: Use a better -version message? 141 if (Clang->getFrontendOpts().ShowVersion) { 142 llvm::cl::PrintVersionMessage(); 143 return 0; 144 } 145 146 // Load any requested plugins. 147 for (unsigned i = 0, 148 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 149 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 150 std::string Error; 151 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 152 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 153 << Path << Error; 154 } 155 156 // Honor -mllvm. 157 // 158 // FIXME: Remove this, one day. 159 // This should happen AFTER plugins have been loaded! 160 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 161 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 162 const char **Args = new const char*[NumArgs + 2]; 163 Args[0] = "clang (LLVM option parsing)"; 164 for (unsigned i = 0; i != NumArgs; ++i) 165 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 166 Args[NumArgs + 1] = 0; 167 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 168 } 169 170 // Honor -analyzer-checker-help. 171 // This should happen AFTER plugins have been loaded! 172 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 173 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 174 return 0; 175 } 176 177 // If there were errors in processing arguments, don't do anything else. 178 bool Success = false; 179 if (!Clang->getDiagnostics().hasErrorOccurred()) { 180 // Create and execute the frontend action. 181 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 182 if (Act) { 183 Success = Clang->ExecuteAction(*Act); 184 if (Clang->getFrontendOpts().DisableFree) 185 Act.take(); 186 } 187 } 188 189 return Success; 190} 191