lib/Frontend/CompilerInvocation.cpp

   1 //===--- CompilerInvocation.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 #include "clang/Frontend/CompilerInvocation.h"
  11 #include "clang/Basic/Diagnostic.h"
  12 #include "clang/Basic/Version.h"
  13 #include "clang/Basic/FileManager.h"
  14 #include "clang/Driver/Arg.h"
  15 #include "clang/Driver/ArgList.h"
  16 #include "clang/Driver/CC1Options.h"
  17 #include "clang/Driver/DriverDiagnostic.h"
  18 #include "clang/Driver/OptTable.h"
  19 #include "clang/Driver/Option.h"
  20 #include "clang/Frontend/CompilerInvocation.h"
  21 #include "clang/Frontend/LangStandard.h"
  22 #include "clang/Serialization/ASTReader.h"
  23 #include "llvm/ADT/OwningPtr.h"
  24 #include "llvm/ADT/SmallVector.h"
  25 #include "llvm/ADT/StringExtras.h"
  26 #include "llvm/ADT/StringSwitch.h"
  27 #include "llvm/ADT/Triple.h"
  28 #include "llvm/Support/ErrorHandling.h"
  29 #include "llvm/Support/Host.h"
  30 #include "llvm/Support/Path.h"
  31 using namespace clang;
  32
  33 static const char *getAnalysisStoreName(AnalysisStores Kind) {
  34   switch (Kind) {
  35   default:
  36     llvm_unreachable("Unknown analysis store!");
  37 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
  38   case NAME##Model: return CMDFLAG;
  39 #include "clang/Frontend/Analyses.def"
  40   }
  41 }
  42
  43 static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
  44   switch (Kind) {
  45   default:
  46     llvm_unreachable("Unknown analysis constraints!");
  47 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
  48   case NAME##Model: return CMDFLAG;
  49 #include "clang/Frontend/Analyses.def"
  50   }
  51 }
  52
  53 static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
  54   switch (Kind) {
  55   default:
  56     llvm_unreachable("Unknown analysis client!");
  57 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
  58   case PD_##NAME: return CMDFLAG;
  59 #include "clang/Frontend/Analyses.def"
  60   }
  61 }
  62
  63 //===----------------------------------------------------------------------===//
  64 // Serialization (to args)
  65 //===----------------------------------------------------------------------===//
  66
  67 static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
  68                                std::vector<std::string> &Res) {
  69   if (Opts.ShowCheckerHelp)
  70     Res.push_back("-analyzer-checker-help");
  71   if (Opts.AnalysisStoreOpt != BasicStoreModel) {
  72     Res.push_back("-analyzer-store");
  73     Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
  74   }
  75   if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
  76     Res.push_back("-analyzer-constraints");
  77     Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
  78   }
  79   if (Opts.AnalysisDiagOpt != PD_HTML) {
  80     Res.push_back("-analyzer-output");
  81     Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
  82   }
  83   if (!Opts.AnalyzeSpecificFunction.empty()) {
  84     Res.push_back("-analyze-function");
  85     Res.push_back(Opts.AnalyzeSpecificFunction);
  86   }
  87   if (Opts.AnalyzeAll)
  88     Res.push_back("-analyzer-opt-analyze-headers");
  89   if (Opts.AnalyzerDisplayProgress)
  90     Res.push_back("-analyzer-display-progress");
  91   if (Opts.AnalyzeNestedBlocks)
  92     Res.push_back("-analyzer-opt-analyze-nested-blocks");
  93   if (Opts.EagerlyAssume)
  94     Res.push_back("-analyzer-eagerly-assume");
  95   if (!Opts.PurgeDead)
  96     Res.push_back("-analyzer-no-purge-dead");
  97   if (Opts.TrimGraph)
  98     Res.push_back("-trim-egraph");
  99   if (Opts.VisualizeEGDot)
 100     Res.push_back("-analyzer-viz-egraph-graphviz");
 101   if (Opts.VisualizeEGUbi)
 102     Res.push_back("-analyzer-viz-egraph-ubigraph");
 103
 104   for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
 105     const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
 106     if (opt.second)
 107       Res.push_back("-analyzer-disable-checker");
 108     else
 109       Res.push_back("-analyzer-checker");
 110     Res.push_back(opt.first);
 111   }
 112 }
 113
 114 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
 115                               std::vector<std::string> &Res) {
 116   if (Opts.DebugInfo)
 117     Res.push_back("-g");
 118   if (Opts.DisableLLVMOpts)
 119     Res.push_back("-disable-llvm-optzns");
 120   if (Opts.DisableRedZone)
 121     Res.push_back("-disable-red-zone");
 122   if (!Opts.DwarfDebugFlags.empty()) {
 123     Res.push_back("-dwarf-debug-flags");
 124     Res.push_back(Opts.DwarfDebugFlags);
 125   }
 126   if (Opts.ObjCRuntimeHasARC)
 127     Res.push_back("-fobjc-runtime-has-arc");
 128   if (Opts.ObjCRuntimeHasTerminate)
 129     Res.push_back("-fobjc-runtime-has-terminate");
 130   if (Opts.EmitGcovArcs)
 131     Res.push_back("-femit-coverage-data");
 132   if (Opts.EmitGcovNotes)
 133     Res.push_back("-femit-coverage-notes");
 134   if (!Opts.MergeAllConstants)
 135     Res.push_back("-fno-merge-all-constants");
 136   if (Opts.NoCommon)
 137     Res.push_back("-fno-common");
 138   if (Opts.ForbidGuardVariables)
 139     Res.push_back("-fforbid-guard-variables");
 140   if (Opts.UseRegisterSizedBitfieldAccess)
 141     Res.push_back("-fuse-register-sized-bitfield-access");
 142   if (Opts.NoImplicitFloat)
 143     Res.push_back("-no-implicit-float");
 144   if (Opts.OmitLeafFramePointer)
 145     Res.push_back("-momit-leaf-frame-pointer");
 146   if (Opts.OptimizeSize) {
 147     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
 148     Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
 149   } else if (Opts.OptimizationLevel != 0)
 150     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
 151   if (!Opts.MainFileName.empty()) {
 152     Res.push_back("-main-file-name");
 153     Res.push_back(Opts.MainFileName);
 154   }
 155   // SimplifyLibCalls is only derived.
 156   // TimePasses is only derived.
 157   // UnitAtATime is unused.
 158   // Inlining is only derived.
 159
 160   // UnrollLoops is derived, but also accepts an option, no
 161   // harm in pushing it back here.
 162   if (Opts.UnrollLoops)
 163     Res.push_back("-funroll-loops");
 164   if (Opts.DataSections)
 165     Res.push_back("-fdata-sections");
 166   if (Opts.FunctionSections)
 167     Res.push_back("-ffunction-sections");
 168   if (Opts.AsmVerbose)
 169     Res.push_back("-masm-verbose");
 170   if (!Opts.CodeModel.empty()) {
 171     Res.push_back("-mcode-model");
 172     Res.push_back(Opts.CodeModel);
 173   }
 174   if (!Opts.CXAAtExit)
 175     Res.push_back("-fno-use-cxa-atexit");
 176   if (Opts.CXXCtorDtorAliases)
 177     Res.push_back("-mconstructor-aliases");
 178   if (Opts.ObjCAutoRefCountExceptions)
 179     Res.push_back("-fobjc-arc-eh");
 180   if (!Opts.DebugPass.empty()) {
 181     Res.push_back("-mdebug-pass");
 182     Res.push_back(Opts.DebugPass);
 183   }
 184   if (Opts.DisableFPElim)
 185     Res.push_back("-mdisable-fp-elim");
 186   if (!Opts.FloatABI.empty()) {
 187     Res.push_back("-mfloat-abi");
 188     Res.push_back(Opts.FloatABI);
 189   }
 190   if (!Opts.LimitFloatPrecision.empty()) {
 191     Res.push_back("-mlimit-float-precision");
 192     Res.push_back(Opts.LimitFloatPrecision);
 193   }
 194   if (Opts.NoZeroInitializedInBSS)
 195     Res.push_back("-mno-zero-initialized-bss");
 196   switch (Opts.getObjCDispatchMethod()) {
 197   case CodeGenOptions::Legacy:
 198     break;
 199   case CodeGenOptions::Mixed:
 200     Res.push_back("-fobjc-dispatch-method=mixed");
 201     break;
 202   case CodeGenOptions::NonLegacy:
 203     Res.push_back("-fobjc-dispatch-method=non-legacy");
 204     break;
 205   }
 206   if (Opts.NumRegisterParameters) {
 207     Res.push_back("-mregparm");
 208     Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
 209   }
 210   if (Opts.NoExecStack)
 211     Res.push_back("-mnoexecstack");
 212   if (Opts.RelaxAll)
 213     Res.push_back("-mrelax-all");
 214   if (Opts.SaveTempLabels)
 215     Res.push_back("-msave-temp-labels");
 216   if (Opts.NoDwarf2CFIAsm)
 217     Res.push_back("-fno-dwarf2-cfi-asm");
 218   if (Opts.SoftFloat)
 219     Res.push_back("-msoft-float");
 220   if (Opts.UnwindTables)
 221     Res.push_back("-munwind-tables");
 222   if (Opts.RelocationModel != "pic") {
 223     Res.push_back("-mrelocation-model");
 224     Res.push_back(Opts.RelocationModel);
 225   }
 226   if (!Opts.VerifyModule)
 227     Res.push_back("-disable-llvm-verifier");
 228   for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i) {
 229     Res.push_back("-backend-option");
 230     Res.push_back(Opts.BackendOptions[i]);
 231   }
 232 }
 233
 234 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
 235                                        std::vector<std::string> &Res) {
 236   if (Opts.IncludeSystemHeaders)
 237     Res.push_back("-sys-header-deps");
 238   if (Opts.ShowHeaderIncludes)
 239     Res.push_back("-H");
 240   if (!Opts.HeaderIncludeOutputFile.empty()) {
 241     Res.push_back("-header-include-file");
 242     Res.push_back(Opts.HeaderIncludeOutputFile);
 243   }
 244   if (Opts.UsePhonyTargets)
 245     Res.push_back("-MP");
 246   if (!Opts.OutputFile.empty()) {
 247     Res.push_back("-dependency-file");
 248     Res.push_back(Opts.OutputFile);
 249   }
 250   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
 251     Res.push_back("-MT");
 252     Res.push_back(Opts.Targets[i]);
 253   }
 254 }
 255
 256 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
 257                                  std::vector<std::string> &Res) {
 258   if (Opts.IgnoreWarnings)
 259     Res.push_back("-w");
 260   if (Opts.NoRewriteMacros)
 261     Res.push_back("-Wno-rewrite-macros");
 262   if (Opts.Pedantic)
 263     Res.push_back("-pedantic");
 264   if (Opts.PedanticErrors)
 265     Res.push_back("-pedantic-errors");
 266   if (!Opts.ShowColumn)
 267     Res.push_back("-fno-show-column");
 268   if (!Opts.ShowLocation)
 269     Res.push_back("-fno-show-source-location");
 270   if (!Opts.ShowCarets)
 271     Res.push_back("-fno-caret-diagnostics");
 272   if (!Opts.ShowFixits)
 273     Res.push_back("-fno-diagnostics-fixit-info");
 274   if (Opts.ShowSourceRanges)
 275     Res.push_back("-fdiagnostics-print-source-range-info");
 276   if (Opts.ShowParseableFixits)
 277     Res.push_back("-fdiagnostics-parseable-fixits");
 278   if (Opts.ShowColors)
 279     Res.push_back("-fcolor-diagnostics");
 280   if (Opts.VerifyDiagnostics)
 281     Res.push_back("-verify");
 282   if (Opts.ShowNames)
 283     Res.push_back("-fdiagnostics-show-name");
 284   if (Opts.ShowOptionNames)
 285     Res.push_back("-fdiagnostics-show-option");
 286   if (Opts.ShowCategories == 1)
 287     Res.push_back("-fdiagnostics-show-category=id");
 288   else if (Opts.ShowCategories == 2)
 289     Res.push_back("-fdiagnostics-show-category=name");
 290   switch (Opts.Format) {
 291   case DiagnosticOptions::Clang:
 292     Res.push_back("-fdiagnostics-format=clang"); break;
 293   case DiagnosticOptions::Msvc:
 294     Res.push_back("-fdiagnostics-format=msvc");  break;
 295   case DiagnosticOptions::Vi:
 296     Res.push_back("-fdiagnostics-format=vi");    break;
 297   }
 298   if (Opts.ErrorLimit) {
 299     Res.push_back("-ferror-limit");
 300     Res.push_back(llvm::utostr(Opts.ErrorLimit));
 301   }
 302   if (!Opts.DiagnosticLogFile.empty()) {
 303     Res.push_back("-diagnostic-log-file");
 304     Res.push_back(Opts.DiagnosticLogFile);
 305   }
 306   if (Opts.MacroBacktraceLimit
 307                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
 308     Res.push_back("-fmacro-backtrace-limit");
 309     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
 310   }
 311   if (Opts.TemplateBacktraceLimit
 312                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
 313     Res.push_back("-ftemplate-backtrace-limit");
 314     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
 315   }
 316
 317   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
 318     Res.push_back("-ftabstop");
 319     Res.push_back(llvm::utostr(Opts.TabStop));
 320   }
 321   if (Opts.MessageLength) {
 322     Res.push_back("-fmessage-length");
 323     Res.push_back(llvm::utostr(Opts.MessageLength));
 324   }
 325   if (!Opts.DumpBuildInformation.empty()) {
 326     Res.push_back("-dump-build-information");
 327     Res.push_back(Opts.DumpBuildInformation);
 328   }
 329   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
 330     Res.push_back("-W" + Opts.Warnings[i]);
 331 }
 332
 333 static const char *getInputKindName(InputKind Kind) {
 334   switch (Kind) {
 335   case IK_None:              break;
 336   case IK_AST:               return "ast";
 337   case IK_Asm:               return "assembler-with-cpp";
 338   case IK_C:                 return "c";
 339   case IK_CXX:               return "c++";
 340   case IK_LLVM_IR:           return "ir";
 341   case IK_ObjC:              return "objective-c";
 342   case IK_ObjCXX:            return "objective-c++";
 343   case IK_OpenCL:            return "cl";
 344   case IK_CUDA:              return "cuda";
 345   case IK_PreprocessedC:     return "cpp-output";
 346   case IK_PreprocessedCXX:   return "c++-cpp-output";
 347   case IK_PreprocessedObjC:  return "objective-c-cpp-output";
 348   case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
 349   }
 350
 351   llvm_unreachable("Unexpected language kind!");
 352   return 0;
 353 }
 354
 355 static const char *getActionName(frontend::ActionKind Kind) {
 356   switch (Kind) {
 357   case frontend::PluginAction:
 358     llvm_unreachable("Invalid kind!");
 359
 360   case frontend::ASTDump:                return "-ast-dump";
 361   case frontend::ASTDumpXML:             return "-ast-dump-xml";
 362   case frontend::ASTPrint:               return "-ast-print";
 363   case frontend::ASTView:                return "-ast-view";
 364   case frontend::CreateModule:           return "-create-module";
 365   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
 366   case frontend::DumpTokens:             return "-dump-tokens";
 367   case frontend::EmitAssembly:           return "-S";
 368   case frontend::EmitBC:                 return "-emit-llvm-bc";
 369   case frontend::EmitHTML:               return "-emit-html";
 370   case frontend::EmitLLVM:               return "-emit-llvm";
 371   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
 372   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
 373   case frontend::EmitObj:                return "-emit-obj";
 374   case frontend::FixIt:                  return "-fixit";
 375   case frontend::GeneratePCH:            return "-emit-pch";
 376   case frontend::GeneratePTH:            return "-emit-pth";
 377   case frontend::InitOnly:               return "-init-only";
 378   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
 379   case frontend::PrintDeclContext:       return "-print-decl-contexts";
 380   case frontend::PrintPreamble:          return "-print-preamble";
 381   case frontend::PrintPreprocessedInput: return "-E";
 382   case frontend::RewriteMacros:          return "-rewrite-macros";
 383   case frontend::RewriteObjC:            return "-rewrite-objc";
 384   case frontend::RewriteTest:            return "-rewrite-test";
 385   case frontend::RunAnalysis:            return "-analyze";
 386   case frontend::RunPreprocessorOnly:    return "-Eonly";
 387   }
 388
 389   llvm_unreachable("Unexpected language kind!");
 390   return 0;
 391 }
 392
 393 static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
 394                                  std::vector<std::string> &Res) {
 395   if (!Opts.WorkingDir.empty()) {
 396     Res.push_back("-working-directory");
 397     Res.push_back(Opts.WorkingDir);
 398   }
 399 }
 400
 401 static void FrontendOptsToArgs(const FrontendOptions &Opts,
 402                                std::vector<std::string> &Res) {
 403   if (Opts.DisableFree)
 404     Res.push_back("-disable-free");
 405   if (Opts.RelocatablePCH)
 406     Res.push_back("-relocatable-pch");
 407   if (Opts.ChainedPCH)
 408     Res.push_back("-chained-pch");
 409   if (Opts.ShowHelp)
 410     Res.push_back("-help");
 411   if (Opts.ShowMacrosInCodeCompletion)
 412     Res.push_back("-code-completion-macros");
 413   if (Opts.ShowCodePatternsInCodeCompletion)
 414     Res.push_back("-code-completion-patterns");
 415   if (!Opts.ShowGlobalSymbolsInCodeCompletion)
 416     Res.push_back("-no-code-completion-globals");
 417   if (Opts.ShowStats)
 418     Res.push_back("-print-stats");
 419   if (Opts.ShowTimers)
 420     Res.push_back("-ftime-report");
 421   if (Opts.ShowVersion)
 422     Res.push_back("-version");
 423   if (Opts.FixWhatYouCan)
 424     Res.push_back("-fix-what-you-can");
 425   switch (Opts.ARCMTAction) {
 426   case FrontendOptions::ARCMT_None:
 427     break;
 428   case FrontendOptions::ARCMT_Check:
 429     Res.push_back("-arcmt-check");
 430     break;
 431   case FrontendOptions::ARCMT_Modify:
 432     Res.push_back("-arcmt-modify");
 433     break;
 434   case FrontendOptions::ARCMT_Migrate:
 435     Res.push_back("-arcmt-migrate");
 436     break;
 437   }
 438   if (!Opts.ARCMTMigrateDir.empty()) {
 439     Res.push_back("-arcmt-migrate-directory");
 440     Res.push_back(Opts.ARCMTMigrateDir);
 441   }
 442
 443   bool NeedLang = false;
 444   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
 445     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
 446         Opts.Inputs[i].first)
 447       NeedLang = true;
 448   if (NeedLang) {
 449     Res.push_back("-x");
 450     Res.push_back(getInputKindName(Opts.Inputs[0].first));
 451   }
 452   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
 453     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
 454            "Unable to represent this input vector!");
 455     Res.push_back(Opts.Inputs[i].second);
 456   }
 457
 458   if (!Opts.OutputFile.empty()) {
 459     Res.push_back("-o");
 460     Res.push_back(Opts.OutputFile);
 461   }
 462   if (!Opts.CodeCompletionAt.FileName.empty()) {
 463     Res.push_back("-code-completion-at");
 464     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
 465                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
 466                   llvm::utostr(Opts.CodeCompletionAt.Column));
 467   }
 468   if (Opts.ProgramAction != frontend::PluginAction)
 469     Res.push_back(getActionName(Opts.ProgramAction));
 470   if (!Opts.ActionName.empty()) {
 471     Res.push_back("-plugin");
 472     Res.push_back(Opts.ActionName);
 473     for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
 474       Res.push_back("-plugin-arg-" + Opts.ActionName);
 475       Res.push_back(Opts.PluginArgs[i]);
 476     }
 477   }
 478   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
 479     Res.push_back("-load");
 480     Res.push_back(Opts.Plugins[i]);
 481   }
 482   for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
 483     Res.push_back("-add-plugin");
 484     Res.push_back(Opts.AddPluginActions[i]);
 485     for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
 486       Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
 487       Res.push_back(Opts.AddPluginArgs[i][ai]);
 488     }
 489   }
 490   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
 491     Res.push_back("-ast-merge");
 492     Res.push_back(Opts.ASTMergeFiles[i]);
 493   }
 494   for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
 495     Res.push_back("-import-module");
 496     Res.push_back(Opts.Modules[i]);
 497   }
 498   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
 499     Res.push_back("-mllvm");
 500     Res.push_back(Opts.LLVMArgs[i]);
 501   }
 502 }
 503
 504 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
 505                                    std::vector<std::string> &Res) {
 506   if (Opts.Sysroot != "/") {
 507     Res.push_back("-isysroot");
 508     Res.push_back(Opts.Sysroot);
 509   }
 510
 511   /// User specified include entries.
 512   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
 513     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
 514     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
 515       llvm::report_fatal_error("Invalid option set!");
 516     if (E.IsUserSupplied) {
 517       if (E.Group == frontend::After) {
 518         Res.push_back("-idirafter");
 519       } else if (E.Group == frontend::Quoted) {
 520         Res.push_back("-iquote");
 521       } else if (E.Group == frontend::System) {
 522         Res.push_back("-isystem");
 523       } else if (E.Group == frontend::CXXSystem) {
 524         Res.push_back("-cxx-isystem");
 525       } else {
 526         assert(E.Group == frontend::Angled && "Invalid group!");
 527         Res.push_back(E.IsFramework ? "-F" : "-I");
 528       }
 529     } else {
 530       if (E.Group != frontend::Angled && E.Group != frontend::System)
 531         llvm::report_fatal_error("Invalid option set!");
 532       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
 533                     "-iwithprefix");
 534     }
 535     Res.push_back(E.Path);
 536   }
 537
 538   if (!Opts.EnvIncPath.empty()) {
 539     // FIXME: Provide an option for this, and move env detection to driver.
 540     llvm::report_fatal_error("Not yet implemented!");
 541   }
 542   if (!Opts.CEnvIncPath.empty()) {
 543     // FIXME: Provide an option for this, and move env detection to driver.
 544     llvm::report_fatal_error("Not yet implemented!");
 545   }
 546   if (!Opts.ObjCEnvIncPath.empty()) {
 547     // FIXME: Provide an option for this, and move env detection to driver.
 548     llvm::report_fatal_error("Not yet implemented!");
 549   }
 550   if (!Opts.CXXEnvIncPath.empty()) {
 551     // FIXME: Provide an option for this, and move env detection to driver.
 552     llvm::report_fatal_error("Not yet implemented!");
 553   }
 554   if (!Opts.ObjCXXEnvIncPath.empty()) {
 555     // FIXME: Provide an option for this, and move env detection to driver.
 556     llvm::report_fatal_error("Not yet implemented!");
 557   }
 558   if (!Opts.ResourceDir.empty()) {
 559     Res.push_back("-resource-dir");
 560     Res.push_back(Opts.ResourceDir);
 561   }
 562   if (!Opts.UseStandardIncludes)
 563     Res.push_back("-nostdinc");
 564   if (!Opts.UseStandardCXXIncludes)
 565     Res.push_back("-nostdinc++");
 566   if (Opts.UseLibcxx)
 567     Res.push_back("-stdlib=libc++");
 568   if (Opts.Verbose)
 569     Res.push_back("-v");
 570 }
 571
 572 static void LangOptsToArgs(const LangOptions &Opts,
 573                            std::vector<std::string> &Res) {
 574   LangOptions DefaultLangOpts;
 575
 576   // FIXME: Need to set -std to get all the implicit options.
 577
 578   // FIXME: We want to only pass options relative to the defaults, which
 579   // requires constructing a target. :(
 580   //
 581   // It would be better to push the all target specific choices into the driver,
 582   // so that everything below that was more uniform.
 583
 584   if (Opts.Trigraphs)
 585     Res.push_back("-trigraphs");
 586   // Implicit based on the input kind:
 587   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
 588   // Implicit based on the input language standard:
 589   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
 590   if (Opts.DollarIdents)
 591     Res.push_back("-fdollars-in-identifiers");
 592   if (Opts.GNUMode && !Opts.GNUKeywords)
 593     Res.push_back("-fno-gnu-keywords");
 594   if (!Opts.GNUMode && Opts.GNUKeywords)
 595     Res.push_back("-fgnu-keywords");
 596   if (Opts.Microsoft)
 597     Res.push_back("-fms-extensions");
 598   if (Opts.MSCVersion != 0)
 599     Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
 600   if (Opts.Borland)
 601     Res.push_back("-fborland-extensions");
 602   if (Opts.ObjCNonFragileABI)
 603     Res.push_back("-fobjc-nonfragile-abi");
 604   if (Opts.ObjCNonFragileABI2)
 605     Res.push_back("-fobjc-nonfragile-abi");
 606   if (Opts.ObjCDefaultSynthProperties)
 607     Res.push_back("-fobjc-default-synthesize-properties");
 608   // NoInline is implicit.
 609   if (!Opts.CXXOperatorNames)
 610     Res.push_back("-fno-operator-names");
 611   if (Opts.PascalStrings)
 612     Res.push_back("-fpascal-strings");
 613   if (Opts.CatchUndefined)
 614     Res.push_back("-fcatch-undefined-behavior");
 615   if (Opts.WritableStrings)
 616     Res.push_back("-fwritable-strings");
 617   if (Opts.ConstStrings)
 618     Res.push_back("-fconst-strings");
 619   if (!Opts.LaxVectorConversions)
 620     Res.push_back("-fno-lax-vector-conversions");
 621   if (Opts.AltiVec)
 622     Res.push_back("-faltivec");
 623   if (Opts.Exceptions)
 624     Res.push_back("-fexceptions");
 625   if (Opts.ObjCExceptions)
 626     Res.push_back("-fobjc-exceptions");
 627   if (Opts.CXXExceptions)
 628     Res.push_back("-fcxx-exceptions");
 629   if (Opts.SjLjExceptions)
 630     Res.push_back("-fsjlj-exceptions");
 631   if (Opts.TraditionalCPP)
 632     Res.push_back("-traditional-cpp");
 633   if (!Opts.RTTI)
 634     Res.push_back("-fno-rtti");
 635   if (Opts.MSBitfields)
 636     Res.push_back("-mms-bitfields");
 637   if (!Opts.NeXTRuntime)
 638     Res.push_back("-fgnu-runtime");
 639   if (Opts.Freestanding)
 640     Res.push_back("-ffreestanding");
 641   if (Opts.NoBuiltin)
 642     Res.push_back("-fno-builtin");
 643   if (!Opts.AssumeSaneOperatorNew)
 644     Res.push_back("-fno-assume-sane-operator-new");
 645   if (!Opts.ThreadsafeStatics)
 646     Res.push_back("-fno-threadsafe-statics");
 647   if (Opts.POSIXThreads)
 648     Res.push_back("-pthread");
 649   if (Opts.Blocks)
 650     Res.push_back("-fblocks");
 651   if (Opts.EmitAllDecls)
 652     Res.push_back("-femit-all-decls");
 653   if (Opts.MathErrno)
 654     Res.push_back("-fmath-errno");
 655   switch (Opts.getSignedOverflowBehavior()) {
 656   case LangOptions::SOB_Undefined: break;
 657   case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
 658   case LangOptions::SOB_Trapping:
 659     Res.push_back("-ftrapv"); break;
 660     if (!Opts.OverflowHandler.empty()) {
 661       Res.push_back("-ftrapv-handler");
 662       Res.push_back(Opts.OverflowHandler);
 663     }
 664   }
 665   if (Opts.HeinousExtensions)
 666     Res.push_back("-fheinous-gnu-extensions");
 667   // Optimize is implicit.
 668   // OptimizeSize is implicit.
 669   if (Opts.Static)
 670     Res.push_back("-static-define");
 671   if (Opts.DumpRecordLayouts)
 672     Res.push_back("-fdump-record-layouts");
 673   if (Opts.DumpVTableLayouts)
 674     Res.push_back("-fdump-vtable-layouts");
 675   if (Opts.NoBitFieldTypeAlign)
 676     Res.push_back("-fno-bitfield-type-alignment");
 677   if (Opts.PICLevel) {
 678     Res.push_back("-pic-level");
 679     Res.push_back(llvm::utostr(Opts.PICLevel));
 680   }
 681   if (Opts.ObjCGCBitmapPrint)
 682     Res.push_back("-print-ivar-layout");
 683   if (Opts.NoConstantCFStrings)
 684     Res.push_back("-fno-constant-cfstrings");
 685   if (!Opts.AccessControl)
 686     Res.push_back("-fno-access-control");
 687   if (!Opts.CharIsSigned)
 688     Res.push_back("-fno-signed-char");
 689   if (Opts.ShortWChar)
 690     Res.push_back("-fshort-wchar");
 691   if (!Opts.ElideConstructors)
 692     Res.push_back("-fno-elide-constructors");
 693   if (Opts.getGCMode() != LangOptions::NonGC) {
 694     if (Opts.getGCMode() == LangOptions::HybridGC) {
 695       Res.push_back("-fobjc-gc");
 696     } else {
 697       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
 698       Res.push_back("-fobjc-gc-only");
 699     }
 700   }
 701   if (Opts.ObjCAutoRefCount)
 702     Res.push_back("-fobjc-arc");
 703   if (Opts.ObjCRuntimeHasWeak)
 704     Res.push_back("-fobjc-runtime-has-weak");
 705   if (!Opts.ObjCInferRelatedResultType)
 706     Res.push_back("-fno-objc-infer-related-result-type");
 707
 708   if (Opts.AppleKext)
 709     Res.push_back("-fapple-kext");
 710
 711   if (Opts.getVisibilityMode() != DefaultVisibility) {
 712     Res.push_back("-fvisibility");
 713     if (Opts.getVisibilityMode() == HiddenVisibility) {
 714       Res.push_back("hidden");
 715     } else {
 716       assert(Opts.getVisibilityMode() == ProtectedVisibility &&
 717              "Invalid visibility!");
 718       Res.push_back("protected");
 719     }
 720   }
 721   if (Opts.InlineVisibilityHidden)
 722     Res.push_back("-fvisibility-inlines-hidden");
 723
 724   if (Opts.getStackProtectorMode() != 0) {
 725     Res.push_back("-stack-protector");
 726     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
 727   }
 728   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
 729     Res.push_back("-ftemplate-depth");
 730     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
 731   }
 732   if (!Opts.ObjCConstantStringClass.empty()) {
 733     Res.push_back("-fconstant-string-class");
 734     Res.push_back(Opts.ObjCConstantStringClass);
 735   }
 736   if (Opts.FakeAddressSpaceMap)
 737     Res.push_back("-ffake-address-space-map");
 738   if (Opts.ParseUnknownAnytype)
 739     Res.push_back("-funknown-anytype");
 740   if (Opts.DelayedTemplateParsing)
 741     Res.push_back("-fdelayed-template-parsing");
 742   if (Opts.Deprecated)
 743     Res.push_back("-fdeprecated-macro");
 744 }
 745
 746 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
 747                                    std::vector<std::string> &Res) {
 748   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
 749     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
 750                   Opts.Macros[i].first);
 751   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
 752     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
 753     Res.push_back("-include");
 754     Res.push_back(Opts.Includes[i]);
 755   }
 756   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
 757     Res.push_back("-imacros");
 758     Res.push_back(Opts.MacroIncludes[i]);
 759   }
 760   if (!Opts.UsePredefines)
 761     Res.push_back("-undef");
 762   if (Opts.DetailedRecord)
 763     Res.push_back("-detailed-preprocessing-record");
 764   if (!Opts.ImplicitPCHInclude.empty()) {
 765     Res.push_back("-include-pch");
 766     Res.push_back(Opts.ImplicitPCHInclude);
 767   }
 768   if (!Opts.ImplicitPTHInclude.empty()) {
 769     Res.push_back("-include-pth");
 770     Res.push_back(Opts.ImplicitPTHInclude);
 771   }
 772   if (!Opts.TokenCache.empty()) {
 773     if (Opts.ImplicitPTHInclude.empty()) {
 774       Res.push_back("-token-cache");
 775       Res.push_back(Opts.TokenCache);
 776     } else
 777       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
 778              "Unsupported option combination!");
 779   }
 780   for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i) {
 781     Res.push_back("-chain-include");
 782     Res.push_back(Opts.ChainedIncludes[i]);
 783   }
 784   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
 785     Res.push_back("-remap-file");
 786     Res.push_back(Opts.RemappedFiles[i].first + ";" +
 787                   Opts.RemappedFiles[i].second);
 788   }
 789 }
 790
 791 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
 792                                          std::vector<std::string> &Res) {
 793   if (!Opts.ShowCPP && !Opts.ShowMacros)
 794     llvm::report_fatal_error("Invalid option combination!");
 795
 796   if (Opts.ShowCPP && Opts.ShowMacros)
 797     Res.push_back("-dD");
 798   else if (!Opts.ShowCPP && Opts.ShowMacros)
 799     Res.push_back("-dM");
 800
 801   if (!Opts.ShowLineMarkers)
 802     Res.push_back("-P");
 803   if (Opts.ShowComments)
 804     Res.push_back("-C");
 805   if (Opts.ShowMacroComments)
 806     Res.push_back("-CC");
 807 }
 808
 809 static void TargetOptsToArgs(const TargetOptions &Opts,
 810                              std::vector<std::string> &Res) {
 811   Res.push_back("-triple");
 812   Res.push_back(Opts.Triple);
 813   if (!Opts.CPU.empty()) {
 814     Res.push_back("-target-cpu");
 815     Res.push_back(Opts.CPU);
 816   }
 817   if (!Opts.ABI.empty()) {
 818     Res.push_back("-target-abi");
 819     Res.push_back(Opts.ABI);
 820   }
 821   if (!Opts.LinkerVersion.empty()) {
 822     Res.push_back("-target-linker-version");
 823     Res.push_back(Opts.LinkerVersion);
 824   }
 825   if (!Opts.CXXABI.empty()) {
 826     Res.push_back("-cxx-abi");
 827     Res.push_back(Opts.CXXABI);
 828   }
 829   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
 830     Res.push_back("-target-feature");
 831     Res.push_back(Opts.Features[i]);
 832   }
 833 }
 834
 835 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
 836   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
 837   CodeGenOptsToArgs(getCodeGenOpts(), Res);
 838   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
 839   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
 840   FileSystemOptsToArgs(getFileSystemOpts(), Res);
 841   FrontendOptsToArgs(getFrontendOpts(), Res);
 842   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
 843   LangOptsToArgs(getLangOpts(), Res);
 844   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
 845   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
 846   TargetOptsToArgs(getTargetOpts(), Res);
 847 }
 848
 849 //===----------------------------------------------------------------------===//
 850 // Deserialization (to args)
 851 //===----------------------------------------------------------------------===//
 852
 853 using namespace clang::driver;
 854 using namespace clang::driver::cc1options;
 855
 856 //
 857
 858 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
 859                                      Diagnostic &Diags) {
 860   unsigned DefaultOpt = 0;
 861   if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
 862     DefaultOpt = 2;
 863   // -Os/-Oz implies -O2
 864   return (Args.hasArg(OPT_Os) || Args.hasArg (OPT_Oz)) ? 2 :
 865     Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
 866 }
 867
 868 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
 869                               Diagnostic &Diags) {
 870   using namespace cc1options;
 871
 872   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
 873     llvm::StringRef Name = A->getValue(Args);
 874     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
 875 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
 876       .Case(CMDFLAG, NAME##Model)
 877 #include "clang/Frontend/Analyses.def"
 878       .Default(NumStores);
 879     // FIXME: Error handling.
 880     if (Value == NumStores)
 881       Diags.Report(diag::err_drv_invalid_value)
 882         << A->getAsString(Args) << Name;
 883     else
 884       Opts.AnalysisStoreOpt = Value;
 885   }
 886
 887   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
 888     llvm::StringRef Name = A->getValue(Args);
 889     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
 890 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
 891       .Case(CMDFLAG, NAME##Model)
 892 #include "clang/Frontend/Analyses.def"
 893       .Default(NumConstraints);
 894     // FIXME: Error handling.
 895     if (Value == NumConstraints)
 896       Diags.Report(diag::err_drv_invalid_value)
 897         << A->getAsString(Args) << Name;
 898     else
 899       Opts.AnalysisConstraintsOpt = Value;
 900   }
 901
 902   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
 903     llvm::StringRef Name = A->getValue(Args);
 904     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
 905 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
 906       .Case(CMDFLAG, PD_##NAME)
 907 #include "clang/Frontend/Analyses.def"
 908       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
 909     // FIXME: Error handling.
 910     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
 911       Diags.Report(diag::err_drv_invalid_value)
 912         << A->getAsString(Args) << Name;
 913     else
 914       Opts.AnalysisDiagOpt = Value;
 915   }
 916
 917   Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
 918   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
 919   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
 920   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
 921   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
 922   Opts.AnalyzeNestedBlocks =
 923     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
 924   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
 925   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
 926   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
 927   Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
 928   Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
 929   Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
 930   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
 931   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
 932   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
 933   Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
 934   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
 935
 936   Opts.CheckersControlList.clear();
 937   for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
 938                                              OPT_analyzer_disable_checker),
 939          ie = Args.filtered_end(); it != ie; ++it) {
 940     const Arg *A = *it;
 941     A->claim();
 942     bool enable = (A->getOption().getID() == OPT_analyzer_checker);
 943     // We can have a list of comma separated checker names, e.g:
 944     // '-analyzer-checker=cocoa,unix'
 945     llvm::StringRef checkerList = A->getValue(Args);
 946     llvm::SmallVector<llvm::StringRef, 4> checkers;
 947     checkerList.split(checkers, ",");
 948     for (unsigned i = 0, e = checkers.size(); i != e; ++i)
 949       Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
 950   }
 951 }
 952
 953 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
 954                              Diagnostic &Diags) {
 955   using namespace cc1options;
 956
 957   Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
 958   if (Opts.OptimizationLevel > 3) {
 959     Diags.Report(diag::err_drv_invalid_value)
 960       << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
 961     Opts.OptimizationLevel = 3;
 962   }
 963
 964   // We must always run at least the always inlining pass.
 965   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
 966     : CodeGenOptions::OnlyAlwaysInlining;
 967
 968   Opts.DebugInfo = Args.hasArg(OPT_g);
 969   Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
 970   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
 971   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
 972   Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
 973   Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
 974     OPT_fuse_register_sized_bitfield_access);
 975   Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
 976   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
 977   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
 978   Opts.NoCommon = Args.hasArg(OPT_fno_common);
 979   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
 980   Opts.OptimizeSize = Args.hasArg(OPT_Os);
 981   Opts.OptimizeSize = Args.hasArg(OPT_Oz) ? 2 : Opts.OptimizeSize;
 982   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
 983                             Args.hasArg(OPT_ffreestanding));
 984   Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
 985                      (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
 986
 987   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
 988   Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
 989   Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc);
 990   Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate);
 991   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
 992   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
 993   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
 994   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
 995   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
 996   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
 997   Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
 998   Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
 999   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1000   Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
1001                                           Args.hasArg(OPT_cl_fast_relaxed_math);
1002   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1003   Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1004   Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1005   Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1006   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1007   Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1008   Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1009   Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1010   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1011   Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1012                       Args.hasArg(OPT_cl_fast_relaxed_math);
1013   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1014   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1015
1016   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1017   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1018
1019   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1020   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1021
1022   Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1023   Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1024   Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1025   Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1026   Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1027
1028   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1029     llvm::StringRef Name = A->getValue(Args);
1030     unsigned Method = llvm::StringSwitch<unsigned>(Name)
1031       .Case("legacy", CodeGenOptions::Legacy)
1032       .Case("non-legacy", CodeGenOptions::NonLegacy)
1033       .Case("mixed", CodeGenOptions::Mixed)
1034       .Default(~0U);
1035     if (Method == ~0U)
1036       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1037     else
1038       Opts.ObjCDispatchMethod = Method;
1039   }
1040 }
1041
1042 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1043                                       ArgList &Args) {
1044   using namespace cc1options;
1045   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1046   Opts.Targets = Args.getAllArgValues(OPT_MT);
1047   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1048   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1049   Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1050   Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1051 }
1052
1053 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1054                                 Diagnostic &Diags) {
1055   using namespace cc1options;
1056   Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1057   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1058   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1059   Opts.Pedantic = Args.hasArg(OPT_pedantic);
1060   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1061   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1062   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1063   Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1064                                  OPT_fno_show_column,
1065                                  /*Default=*/true);
1066   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1067   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1068   Opts.ShowNames = Args.hasArg(OPT_fdiagnostics_show_name);
1069   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1070
1071   // Default behavior is to not to show note include stacks.
1072   Opts.ShowNoteIncludeStack = false;
1073   if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1074                                OPT_fno_diagnostics_show_note_include_stack))
1075     if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1076       Opts.ShowNoteIncludeStack = true;
1077
1078   llvm::StringRef ShowOverloads =
1079     Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1080   if (ShowOverloads == "best")
1081     Opts.ShowOverloads = Diagnostic::Ovl_Best;
1082   else if (ShowOverloads == "all")
1083     Opts.ShowOverloads = Diagnostic::Ovl_All;
1084   else
1085     Diags.Report(diag::err_drv_invalid_value)
1086       << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1087       << ShowOverloads;
1088
1089   llvm::StringRef ShowCategory =
1090     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1091   if (ShowCategory == "none")
1092     Opts.ShowCategories = 0;
1093   else if (ShowCategory == "id")
1094     Opts.ShowCategories = 1;
1095   else if (ShowCategory == "name")
1096     Opts.ShowCategories = 2;
1097   else
1098     Diags.Report(diag::err_drv_invalid_value)
1099       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1100       << ShowCategory;
1101
1102   llvm::StringRef Format =
1103     Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1104   if (Format == "clang")
1105     Opts.Format = DiagnosticOptions::Clang;
1106   else if (Format == "msvc")
1107     Opts.Format = DiagnosticOptions::Msvc;
1108   else if (Format == "vi")
1109     Opts.Format = DiagnosticOptions::Vi;
1110   else
1111     Diags.Report(diag::err_drv_invalid_value)
1112       << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1113       << Format;
1114
1115   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1116   Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1117   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1118   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1119   Opts.MacroBacktraceLimit
1120     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1121                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1122   Opts.TemplateBacktraceLimit
1123     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1124                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
1125                          Diags);
1126   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1127                                     DiagnosticOptions::DefaultTabStop, Diags);
1128   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1129     Diags.Report(diag::warn_ignoring_ftabstop_value)
1130       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1131     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1132   }
1133   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1134   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1135   Opts.Warnings = Args.getAllArgValues(OPT_W);
1136 }
1137
1138 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1139   Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1140 }
1141
1142 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1143                                    Diagnostic &Diags) {
1144   using namespace cc1options;
1145   Opts.ProgramAction = frontend::ParseSyntaxOnly;
1146   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1147     switch (A->getOption().getID()) {
1148     default:
1149       assert(0 && "Invalid option in group!");
1150     case OPT_ast_dump:
1151       Opts.ProgramAction = frontend::ASTDump; break;
1152     case OPT_ast_dump_xml:
1153       Opts.ProgramAction = frontend::ASTDumpXML; break;
1154     case OPT_ast_print:
1155       Opts.ProgramAction = frontend::ASTPrint; break;
1156     case OPT_ast_view:
1157       Opts.ProgramAction = frontend::ASTView; break;
1158     case OPT_dump_raw_tokens:
1159       Opts.ProgramAction = frontend::DumpRawTokens; break;
1160     case OPT_dump_tokens:
1161       Opts.ProgramAction = frontend::DumpTokens; break;
1162     case OPT_S:
1163       Opts.ProgramAction = frontend::EmitAssembly; break;
1164     case OPT_emit_llvm_bc:
1165       Opts.ProgramAction = frontend::EmitBC; break;
1166     case OPT_emit_html:
1167       Opts.ProgramAction = frontend::EmitHTML; break;
1168     case OPT_emit_llvm:
1169       Opts.ProgramAction = frontend::EmitLLVM; break;
1170     case OPT_emit_llvm_only:
1171       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1172     case OPT_emit_codegen_only:
1173       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1174     case OPT_emit_obj:
1175       Opts.ProgramAction = frontend::EmitObj; break;
1176     case OPT_fixit_EQ:
1177       Opts.FixItSuffix = A->getValue(Args);
1178       // fall-through!
1179     case OPT_fixit:
1180       Opts.ProgramAction = frontend::FixIt; break;
1181     case OPT_emit_pch:
1182       Opts.ProgramAction = frontend::GeneratePCH; break;
1183     case OPT_emit_pth:
1184       Opts.ProgramAction = frontend::GeneratePTH; break;
1185     case OPT_init_only:
1186       Opts.ProgramAction = frontend::InitOnly; break;
1187     case OPT_fsyntax_only:
1188       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1189     case OPT_print_decl_contexts:
1190       Opts.ProgramAction = frontend::PrintDeclContext; break;
1191     case OPT_print_preamble:
1192       Opts.ProgramAction = frontend::PrintPreamble; break;
1193     case OPT_E:
1194       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1195     case OPT_rewrite_macros:
1196       Opts.ProgramAction = frontend::RewriteMacros; break;
1197     case OPT_rewrite_objc:
1198       Opts.ProgramAction = frontend::RewriteObjC; break;
1199     case OPT_rewrite_test:
1200       Opts.ProgramAction = frontend::RewriteTest; break;
1201     case OPT_analyze:
1202       Opts.ProgramAction = frontend::RunAnalysis; break;
1203     case OPT_Eonly:
1204       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1205     case OPT_create_module:
1206       Opts.ProgramAction = frontend::CreateModule; break;
1207     }
1208   }
1209
1210   if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1211     Opts.Plugins.push_back(A->getValue(Args,0));
1212     Opts.ProgramAction = frontend::PluginAction;
1213     Opts.ActionName = A->getValue(Args);
1214
1215     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1216            end = Args.filtered_end(); it != end; ++it) {
1217       if ((*it)->getValue(Args, 0) == Opts.ActionName)
1218         Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1219     }
1220   }
1221
1222   Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1223   Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1224   for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1225     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1226            end = Args.filtered_end(); it != end; ++it) {
1227       if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1228         Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1229     }
1230   }
1231
1232   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1233     Opts.CodeCompletionAt =
1234       ParsedSourceLocation::FromString(A->getValue(Args));
1235     if (Opts.CodeCompletionAt.FileName.empty())
1236       Diags.Report(diag::err_drv_invalid_value)
1237         << A->getAsString(Args) << A->getValue(Args);
1238   }
1239   Opts.DisableFree = Args.hasArg(OPT_disable_free);
1240
1241   Opts.OutputFile = Args.getLastArgValue(OPT_o);
1242   Opts.Plugins = Args.getAllArgValues(OPT_load);
1243   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1244   Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1245   Opts.ShowHelp = Args.hasArg(OPT_help);
1246   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1247   Opts.ShowCodePatternsInCodeCompletion
1248     = Args.hasArg(OPT_code_completion_patterns);
1249   Opts.ShowGlobalSymbolsInCodeCompletion
1250     = !Args.hasArg(OPT_no_code_completion_globals);
1251   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1252   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1253   Opts.ShowVersion = Args.hasArg(OPT_version);
1254   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1255   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1256   Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1257   Opts.Modules = Args.getAllArgValues(OPT_import_module);
1258
1259   Opts.ARCMTAction = FrontendOptions::ARCMT_None;
1260   if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1261                                      OPT_arcmt_modify,
1262                                      OPT_arcmt_migrate)) {
1263     switch (A->getOption().getID()) {
1264     default:
1265       llvm_unreachable("missed a case");
1266     case OPT_arcmt_check:
1267       Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1268       break;
1269     case OPT_arcmt_modify:
1270       Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1271       break;
1272     case OPT_arcmt_migrate:
1273       Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1274       break;
1275     }
1276   }
1277   Opts.ARCMTMigrateDir = Args.getLastArgValue(OPT_arcmt_migrate_directory);
1278
1279   InputKind DashX = IK_None;
1280   if (const Arg *A = Args.getLastArg(OPT_x)) {
1281     DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1282       .Case("c", IK_C)
1283       .Case("cl", IK_OpenCL)
1284       .Case("cuda", IK_CUDA)
1285       .Case("c++", IK_CXX)
1286       .Case("objective-c", IK_ObjC)
1287       .Case("objective-c++", IK_ObjCXX)
1288       .Case("cpp-output", IK_PreprocessedC)
1289       .Case("assembler-with-cpp", IK_Asm)
1290       .Case("c++-cpp-output", IK_PreprocessedCXX)
1291       .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1292       .Case("objc-cpp-output", IK_PreprocessedObjC)
1293       .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1294       .Case("c-header", IK_C)
1295       .Case("objective-c-header", IK_ObjC)
1296       .Case("c++-header", IK_CXX)
1297       .Case("objective-c++-header", IK_ObjCXX)
1298       .Case("ast", IK_AST)
1299       .Case("ir", IK_LLVM_IR)
1300       .Default(IK_None);
1301     if (DashX == IK_None)
1302       Diags.Report(diag::err_drv_invalid_value)
1303         << A->getAsString(Args) << A->getValue(Args);
1304   }
1305
1306   // '-' is the default input if none is given.
1307   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1308   Opts.Inputs.clear();
1309   if (Inputs.empty())
1310     Inputs.push_back("-");
1311   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1312     InputKind IK = DashX;
1313     if (IK == IK_None) {
1314       IK = FrontendOptions::getInputKindForExtension(
1315         llvm::StringRef(Inputs[i]).rsplit('.').second);
1316       // FIXME: Remove this hack.
1317       if (i == 0)
1318         DashX = IK;
1319     }
1320     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1321   }
1322
1323   return DashX;
1324 }
1325
1326 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1327                                                  void *MainAddr) {
1328   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1329
1330   if (!P.isEmpty()) {
1331     P.eraseComponent();  // Remove /clang from foo/bin/clang
1332     P.eraseComponent();  // Remove /bin   from foo/bin
1333
1334     // Get foo/lib/clang/<version>/include
1335     P.appendComponent("lib");
1336     P.appendComponent("clang");
1337     P.appendComponent(CLANG_VERSION_STRING);
1338   }
1339
1340   return P.str();
1341 }
1342
1343 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1344   using namespace cc1options;
1345   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1346   Opts.Verbose = Args.hasArg(OPT_v);
1347   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1348   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1349   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1350   if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1351     Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1352   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1353
1354   // Add -I... and -F... options in order.
1355   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1356          ie = Args.filtered_end(); it != ie; ++it)
1357     Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1358                  /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1359
1360   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1361   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1362   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1363                                              OPT_iwithprefixbefore),
1364          ie = Args.filtered_end(); it != ie; ++it) {
1365     const Arg *A = *it;
1366     if (A->getOption().matches(OPT_iprefix))
1367       Prefix = A->getValue(Args);
1368     else if (A->getOption().matches(OPT_iwithprefix))
1369       Opts.AddPath(Prefix.str() + A->getValue(Args),
1370                    frontend::System, false, false, false);
1371     else
1372       Opts.AddPath(Prefix.str() + A->getValue(Args),
1373                    frontend::Angled, false, false, false);
1374   }
1375
1376   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1377          ie = Args.filtered_end(); it != ie; ++it)
1378     Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1379   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1380          ie = Args.filtered_end(); it != ie; ++it)
1381     Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1382   for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem, OPT_isystem,
1383          OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1384     Opts.AddPath((*it)->getValue(Args),
1385                  ((*it)->getOption().matches(OPT_cxx_isystem) ?
1386                    frontend::CXXSystem : frontend::System),
1387                  true, false, !(*it)->getOption().matches(OPT_iwithsysroot));
1388
1389   // FIXME: Need options for the various environment variables!
1390 }
1391
1392 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1393                                          LangStandard::Kind LangStd) {
1394   // Set some properties which depend solely on the input kind; it would be nice
1395   // to move these to the language standard, and have the driver resolve the
1396   // input kind + language standard.
1397   if (IK == IK_Asm) {
1398     Opts.AsmPreprocessor = 1;
1399   } else if (IK == IK_ObjC ||
1400              IK == IK_ObjCXX ||
1401              IK == IK_PreprocessedObjC ||
1402              IK == IK_PreprocessedObjCXX) {
1403     Opts.ObjC1 = Opts.ObjC2 = 1;
1404   }
1405
1406   if (LangStd == LangStandard::lang_unspecified) {
1407     // Based on the base language, pick one.
1408     switch (IK) {
1409     case IK_None:
1410     case IK_AST:
1411     case IK_LLVM_IR:
1412       assert(0 && "Invalid input kind!");
1413     case IK_OpenCL:
1414       LangStd = LangStandard::lang_opencl;
1415       break;
1416     case IK_CUDA:
1417       LangStd = LangStandard::lang_cuda;
1418       break;
1419     case IK_Asm:
1420     case IK_C:
1421     case IK_PreprocessedC:
1422     case IK_ObjC:
1423     case IK_PreprocessedObjC:
1424       LangStd = LangStandard::lang_gnu99;
1425       break;
1426     case IK_CXX:
1427     case IK_PreprocessedCXX:
1428     case IK_ObjCXX:
1429     case IK_PreprocessedObjCXX:
1430       LangStd = LangStandard::lang_gnucxx98;
1431       break;
1432     }
1433   }
1434
1435   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1436   Opts.BCPLComment = Std.hasBCPLComments();
1437   Opts.C99 = Std.isC99();
1438   Opts.C1X = Std.isC1X();
1439   Opts.CPlusPlus = Std.isCPlusPlus();
1440   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1441   Opts.Digraphs = Std.hasDigraphs();
1442   Opts.GNUMode = Std.isGNUMode();
1443   Opts.GNUInline = !Std.isC99();
1444   Opts.HexFloats = Std.hasHexFloats();
1445   Opts.ImplicitInt = Std.hasImplicitInt();
1446
1447   // OpenCL has some additional defaults.
1448   if (LangStd == LangStandard::lang_opencl) {
1449     Opts.OpenCL = 1;
1450     Opts.AltiVec = 1;
1451     Opts.CXXOperatorNames = 1;
1452     Opts.LaxVectorConversions = 1;
1453     Opts.DefaultFPContract = 1;
1454   }
1455
1456   if (LangStd == LangStandard::lang_cuda)
1457     Opts.CUDA = 1;
1458
1459   // OpenCL and C++ both have bool, true, false keywords.
1460   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1461
1462   Opts.GNUKeywords = Opts.GNUMode;
1463   Opts.CXXOperatorNames = Opts.CPlusPlus;
1464
1465   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1466   // is specified, or -std is set to a conforming mode.
1467   Opts.Trigraphs = !Opts.GNUMode;
1468
1469   Opts.DollarIdents = !Opts.AsmPreprocessor;
1470 }
1471
1472 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1473                           Diagnostic &Diags) {
1474   // FIXME: Cleanup per-file based stuff.
1475   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1476   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1477     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1478 #define LANGSTANDARD(id, name, desc, features) \
1479       .Case(name, LangStandard::lang_##id)
1480 #include "clang/Frontend/LangStandards.def"
1481       .Default(LangStandard::lang_unspecified);
1482     if (LangStd == LangStandard::lang_unspecified)
1483       Diags.Report(diag::err_drv_invalid_value)
1484         << A->getAsString(Args) << A->getValue(Args);
1485     else {
1486       // Valid standard, check to make sure language and standard are compatable.
1487       const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1488       switch (IK) {
1489       case IK_C:
1490       case IK_ObjC:
1491       case IK_PreprocessedC:
1492       case IK_PreprocessedObjC:
1493         if (!(Std.isC89() || Std.isC99()))
1494           Diags.Report(diag::err_drv_argument_not_allowed_with)
1495             << A->getAsString(Args) << "C/ObjC";
1496         break;
1497       case IK_CXX:
1498       case IK_ObjCXX:
1499       case IK_PreprocessedCXX:
1500       case IK_PreprocessedObjCXX:
1501         if (!Std.isCPlusPlus())
1502           Diags.Report(diag::err_drv_argument_not_allowed_with)
1503             << A->getAsString(Args) << "C++/ObjC++";
1504         break;
1505       case IK_OpenCL:
1506         if (!Std.isC99())
1507           Diags.Report(diag::err_drv_argument_not_allowed_with)
1508             << A->getAsString(Args) << "OpenCL";
1509         break;
1510       case IK_CUDA:
1511         if (!Std.isCPlusPlus())
1512           Diags.Report(diag::err_drv_argument_not_allowed_with)
1513             << A->getAsString(Args) << "CUDA";
1514         break;
1515       default:
1516         break;
1517       }
1518     }
1519   }
1520
1521   if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1522     if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1523       Diags.Report(diag::err_drv_invalid_value)
1524         << A->getAsString(Args) << A->getValue(Args);
1525     }
1526   }
1527
1528   CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1529
1530   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1531   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1532   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1533   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1534   // name, as it doesn't seem a useful distinction.
1535   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1536                                   Opts.GNUKeywords);
1537
1538   if (Args.hasArg(OPT_fno_operator_names))
1539     Opts.CXXOperatorNames = 0;
1540
1541   if (Opts.ObjC1) {
1542     if (Args.hasArg(OPT_fobjc_gc_only))
1543       Opts.setGCMode(LangOptions::GCOnly);
1544     else if (Args.hasArg(OPT_fobjc_gc))
1545       Opts.setGCMode(LangOptions::HybridGC);
1546     else if (Args.hasArg(OPT_fobjc_arc)) {
1547       Opts.ObjCAutoRefCount = 1;
1548       if (!Args.hasArg(OPT_fobjc_nonfragile_abi))
1549         Diags.Report(diag::err_arc_nonfragile_abi);
1550     }
1551
1552     if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1553       Opts.ObjCRuntimeHasWeak = 1;
1554
1555     if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1556       Opts.ObjCInferRelatedResultType = 0;
1557   }
1558
1559   if (Args.hasArg(OPT_fgnu89_inline))
1560     Opts.GNUInline = 1;
1561
1562   if (Args.hasArg(OPT_fapple_kext)) {
1563     if (!Opts.CPlusPlus)
1564       Diags.Report(diag::warn_c_kext);
1565     else
1566       Opts.AppleKext = 1;
1567   }
1568
1569   if (Args.hasArg(OPT_print_ivar_layout))
1570     Opts.ObjCGCBitmapPrint = 1;
1571   if (Args.hasArg(OPT_fno_constant_cfstrings))
1572     Opts.NoConstantCFStrings = 1;
1573
1574   if (Args.hasArg(OPT_faltivec))
1575     Opts.AltiVec = 1;
1576
1577   if (Args.hasArg(OPT_pthread))
1578     Opts.POSIXThreads = 1;
1579
1580   if (Args.hasArg(OPT_fdelayed_template_parsing))
1581     Opts.DelayedTemplateParsing = 1;
1582
1583   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1584   if (Vis == "default")
1585     Opts.setVisibilityMode(DefaultVisibility);
1586   else if (Vis == "hidden")
1587     Opts.setVisibilityMode(HiddenVisibility);
1588   else if (Vis == "protected")
1589     Opts.setVisibilityMode(ProtectedVisibility);
1590   else
1591     Diags.Report(diag::err_drv_invalid_value)
1592       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1593
1594   if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1595     Opts.InlineVisibilityHidden = 1;
1596
1597   if (Args.hasArg(OPT_ftrapv)) {
1598     Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1599     // Set the handler, if one is specified.
1600     Opts.OverflowHandler =
1601         Args.getLastArgValue(OPT_ftrapv_handler);
1602   }
1603   else if (Args.hasArg(OPT_fwrapv))
1604     Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1605
1606   if (Args.hasArg(OPT_trigraphs))
1607     Opts.Trigraphs = 1;
1608
1609   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1610                                    OPT_fno_dollars_in_identifiers,
1611                                    Opts.DollarIdents);
1612   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1613   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1614   Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1615   Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1616   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1617   Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1618                                    Opts.ConstStrings);
1619   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1620     Opts.LaxVectorConversions = 0;
1621   if (Args.hasArg(OPT_fno_threadsafe_statics))
1622     Opts.ThreadsafeStatics = 0;
1623   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1624   Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1625   Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1626   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1627   Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1628
1629   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1630   Opts.Blocks = Args.hasArg(OPT_fblocks);
1631   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1632   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1633   Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1634   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1635   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1636   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1637   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1638   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1639   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1640   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1641   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1642                                                Diags);
1643   Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1644   Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1645                                                     0, Diags);
1646   Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1647   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1648   Opts.ObjCConstantStringClass =
1649     Args.getLastArgValue(OPT_fconstant_string_class);
1650   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1651   if (Opts.ObjCNonFragileABI)
1652     Opts.ObjCNonFragileABI2 = true;
1653   Opts.ObjCDefaultSynthProperties =
1654     Args.hasArg(OPT_fobjc_default_synthesize_properties);
1655   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1656   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1657   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1658   Opts.Static = Args.hasArg(OPT_static_define);
1659   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1660   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1661   Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1662   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1663   Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1664   Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1665   Opts.OptimizeSize = 0;
1666   Opts.MRTD = Args.hasArg(OPT_mrtd);
1667   Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1668   Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1669
1670   // Record whether the __DEPRECATED define was requested.
1671   Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1672                                  OPT_fno_deprecated_macro,
1673                                  Opts.Deprecated);
1674
1675   // FIXME: Eliminate this dependency.
1676   unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1677   Opts.Optimize = Opt != 0;
1678
1679   // This is the __NO_INLINE__ define, which just depends on things like the
1680   // optimization level and -fno-inline, not actually whether the backend has
1681   // inlining enabled.
1682   //
1683   // FIXME: This is affected by other options (-fno-inline).
1684   Opts.NoInline = !Opt;
1685
1686   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1687   switch (SSP) {
1688   default:
1689     Diags.Report(diag::err_drv_invalid_value)
1690       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1691     break;
1692   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1693   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1694   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1695   }
1696 }
1697
1698 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1699                                   FileManager &FileMgr,
1700                                   Diagnostic &Diags) {
1701   using namespace cc1options;
1702   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1703   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1704   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1705       Opts.TokenCache = A->getValue(Args);
1706   else
1707     Opts.TokenCache = Opts.ImplicitPTHInclude;
1708   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1709   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1710   Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1711
1712   Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1713   for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1714          ie = Args.filtered_end(); it != ie; ++it) {
1715     const Arg *A = *it;
1716     Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1717   }
1718
1719   if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1720     llvm::StringRef Value(A->getValue(Args));
1721     size_t Comma = Value.find(',');
1722     unsigned Bytes = 0;
1723     unsigned EndOfLine = 0;
1724
1725     if (Comma == llvm::StringRef::npos ||
1726         Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1727         Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1728       Diags.Report(diag::err_drv_preamble_format);
1729     else {
1730       Opts.PrecompiledPreambleBytes.first = Bytes;
1731       Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1732     }
1733   }
1734
1735   // Add macros from the command line.
1736   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1737          ie = Args.filtered_end(); it != ie; ++it) {
1738     if ((*it)->getOption().matches(OPT_D))
1739       Opts.addMacroDef((*it)->getValue(Args));
1740     else
1741       Opts.addMacroUndef((*it)->getValue(Args));
1742   }
1743
1744   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1745
1746   // Add the ordered list of -includes.
1747   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1748                                              OPT_include_pth),
1749          ie = Args.filtered_end(); it != ie; ++it) {
1750     const Arg *A = *it;
1751     // PCH is handled specially, we need to extra the original include path.
1752     if (A->getOption().matches(OPT_include_pch)) {
1753       std::string OriginalFile =
1754         ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1755       if (OriginalFile.empty())
1756         continue;
1757
1758       Opts.Includes.push_back(OriginalFile);
1759     } else
1760       Opts.Includes.push_back(A->getValue(Args));
1761   }
1762
1763   for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1764          ie = Args.filtered_end(); it != ie; ++it) {
1765     const Arg *A = *it;
1766     Opts.ChainedIncludes.push_back(A->getValue(Args));
1767   }
1768
1769   // Include 'altivec.h' if -faltivec option present
1770   if (Args.hasArg(OPT_faltivec))
1771     Opts.Includes.push_back("altivec.h");
1772
1773   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1774          ie = Args.filtered_end(); it != ie; ++it) {
1775     const Arg *A = *it;
1776     std::pair<llvm::StringRef,llvm::StringRef> Split =
1777       llvm::StringRef(A->getValue(Args)).split(';');
1778
1779     if (Split.second.empty()) {
1780       Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1781       continue;
1782     }
1783
1784     Opts.addRemappedFile(Split.first, Split.second);
1785   }
1786
1787   if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1788     llvm::StringRef Name = A->getValue(Args);
1789     unsigned Library = llvm::StringSwitch<unsigned>(Name)
1790       .Case("libc++", ARCXX_libcxx)
1791       .Case("libstdc++", ARCXX_libstdcxx)
1792       .Case("none", ARCXX_nolib)
1793       .Default(~0U);
1794     if (Library == ~0U)
1795       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1796     else
1797       Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1798   }
1799 }
1800
1801 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1802                                         ArgList &Args) {
1803   using namespace cc1options;
1804   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1805   Opts.ShowComments = Args.hasArg(OPT_C);
1806   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1807   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1808   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1809 }
1810
1811 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1812   using namespace cc1options;
1813   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1814   Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1815   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1816   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1817   Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1818   Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1819
1820   // Use the host triple if unspecified.
1821   if (Opts.Triple.empty())
1822     Opts.Triple = llvm::sys::getHostTriple();
1823 }
1824
1825 //
1826
1827 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1828                                         const char *const *ArgBegin,
1829                                         const char *const *ArgEnd,
1830                                         Diagnostic &Diags) {
1831   // Parse the arguments.
1832   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1833   unsigned MissingArgIndex, MissingArgCount;
1834   llvm::OwningPtr<InputArgList> Args(
1835     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1836
1837   // Check for missing argument error.
1838   if (MissingArgCount)
1839     Diags.Report(diag::err_drv_missing_argument)
1840       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1841
1842   // Issue errors on unknown arguments.
1843   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1844          ie = Args->filtered_end(); it != ie; ++it)
1845     Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1846
1847   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1848   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1849   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1850   ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1851   // FIXME: We shouldn't have to pass the DashX option around here
1852   InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1853   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
1854   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1855   if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1856     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1857     if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1858       Res.getLangOpts().ObjCExceptions = 1;
1859   }
1860   // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1861   // PCH file and find the original header name. Remove the need to do that in
1862   // ParsePreprocessorArgs and remove the FileManager
1863   // parameters from the function and the "FileManager.h" #include.
1864   FileManager FileMgr(Res.getFileSystemOpts());
1865   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1866   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1867   ParseTargetArgs(Res.getTargetOpts(), *Args);
1868 }