CompilerInvocation.cpp revision 47e65e63326505b86ac2e0dfb20c13b6c71db714 
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/Driver/Arg.h"
14#include "clang/Driver/ArgList.h"
15#include "clang/Driver/CC1Options.h"
16#include "clang/Driver/DriverDiagnostic.h"
17#include "clang/Driver/OptTable.h"
18#include "clang/Driver/Option.h"
19#include "clang/Frontend/CompilerInvocation.h"
20#include "clang/Frontend/LangStandard.h"
21#include "clang/Serialization/ASTReader.h"
22#include "llvm/ADT/OwningPtr.h"
23#include "llvm/ADT/SmallVector.h"
24#include "llvm/ADT/StringExtras.h"
25#include "llvm/ADT/StringSwitch.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/System/Host.h"
28#include "llvm/System/Path.h"
29using namespace clang;
30
31static const char *getAnalysisName(Analyses Kind) {
32  switch (Kind) {
33  default:
34    llvm_unreachable("Unknown analysis kind!");
35#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36  case NAME: return "-" CMDFLAG;
37#include "clang/Frontend/Analyses.def"
38  }
39}
40
41static const char *getAnalysisStoreName(AnalysisStores Kind) {
42  switch (Kind) {
43  default:
44    llvm_unreachable("Unknown analysis store!");
45#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46  case NAME##Model: return CMDFLAG;
47#include "clang/Frontend/Analyses.def"
48  }
49}
50
51static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52  switch (Kind) {
53  default:
54    llvm_unreachable("Unknown analysis constraints!");
55#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56  case NAME##Model: return CMDFLAG;
57#include "clang/Frontend/Analyses.def"
58  }
59}
60
61static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62  switch (Kind) {
63  default:
64    llvm_unreachable("Unknown analysis client!");
65#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66  case PD_##NAME: return CMDFLAG;
67#include "clang/Frontend/Analyses.def"
68  }
69}
70
71//===----------------------------------------------------------------------===//
72// Serialization (to args)
73//===----------------------------------------------------------------------===//
74
75static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                               std::vector<std::string> &Res) {
77  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80    Res.push_back("-analyzer-store");
81    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82  }
83  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84    Res.push_back("-analyzer-constraints");
85    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86  }
87  if (Opts.AnalysisDiagOpt != PD_HTML) {
88    Res.push_back("-analyzer-output");
89    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90  }
91  if (!Opts.AnalyzeSpecificFunction.empty()) {
92    Res.push_back("-analyze-function");
93    Res.push_back(Opts.AnalyzeSpecificFunction);
94  }
95  if (Opts.AnalyzeAll)
96    Res.push_back("-analyzer-opt-analyze-headers");
97  if (Opts.AnalyzerDisplayProgress)
98    Res.push_back("-analyzer-display-progress");
99  if (Opts.AnalyzeNestedBlocks)
100    Res.push_back("-analyzer-opt-analyze-nested-blocks");
101  if (Opts.EagerlyAssume)
102    Res.push_back("-analyzer-eagerly-assume");
103  if (!Opts.PurgeDead)
104    Res.push_back("-analyzer-no-purge-dead");
105  if (Opts.TrimGraph)
106    Res.push_back("-trim-egraph");
107  if (Opts.VisualizeEGDot)
108    Res.push_back("-analyzer-viz-egraph-graphviz");
109  if (Opts.VisualizeEGDot)
110    Res.push_back("-analyzer-viz-egraph-ubigraph");
111  if (Opts.EnableExperimentalChecks)
112    Res.push_back("-analyzer-experimental-checks");
113  if (Opts.EnableExperimentalInternalChecks)
114    Res.push_back("-analyzer-experimental-internal-checks");
115  if (Opts.IdempotentOps)
116      Res.push_back("-analyzer-check-idempotent-operations");
117}
118
119static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
120                              std::vector<std::string> &Res) {
121  if (Opts.DebugInfo)
122    Res.push_back("-g");
123  if (Opts.DisableLLVMOpts)
124    Res.push_back("-disable-llvm-optzns");
125  if (Opts.DisableRedZone)
126    Res.push_back("-disable-red-zone");
127  if (!Opts.DwarfDebugFlags.empty()) {
128    Res.push_back("-dwarf-debug-flags");
129    Res.push_back(Opts.DwarfDebugFlags);
130  }
131  if (!Opts.MergeAllConstants)
132    Res.push_back("-fno-merge-all-constants");
133  if (Opts.NoCommon)
134    Res.push_back("-fno-common");
135  if (Opts.NoImplicitFloat)
136    Res.push_back("-no-implicit-float");
137  if (Opts.OmitLeafFramePointer)
138    Res.push_back("-momit-leaf-frame-pointer");
139  if (Opts.OptimizeSize) {
140    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
141    Res.push_back("-Os");
142  } else if (Opts.OptimizationLevel != 0)
143    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
144  if (!Opts.MainFileName.empty()) {
145    Res.push_back("-main-file-name");
146    Res.push_back(Opts.MainFileName);
147  }
148  // SimplifyLibCalls is only derived.
149  // TimePasses is only derived.
150  // UnitAtATime is unused.
151  // Inlining is only derived.
152
153  // UnrollLoops is derived, but also accepts an option, no
154  // harm in pushing it back here.
155  if (Opts.UnrollLoops)
156    Res.push_back("-funroll-loops");
157  if (Opts.DataSections)
158    Res.push_back("-fdata-sections");
159  if (Opts.FunctionSections)
160    Res.push_back("-ffunction-sections");
161  if (Opts.AsmVerbose)
162    Res.push_back("-masm-verbose");
163  if (!Opts.CodeModel.empty()) {
164    Res.push_back("-mcode-model");
165    Res.push_back(Opts.CodeModel);
166  }
167  if (!Opts.CXAAtExit)
168    Res.push_back("-fno-use-cxa-atexit");
169  if (Opts.CXXCtorDtorAliases)
170    Res.push_back("-mconstructor-aliases");
171  if (!Opts.DebugPass.empty()) {
172    Res.push_back("-mdebug-pass");
173    Res.push_back(Opts.DebugPass);
174  }
175  if (Opts.DisableFPElim)
176    Res.push_back("-mdisable-fp-elim");
177  if (!Opts.FloatABI.empty()) {
178    Res.push_back("-mfloat-abi");
179    Res.push_back(Opts.FloatABI);
180  }
181  if (!Opts.LimitFloatPrecision.empty()) {
182    Res.push_back("-mlimit-float-precision");
183    Res.push_back(Opts.LimitFloatPrecision);
184  }
185  if (Opts.NoZeroInitializedInBSS)
186    Res.push_back("-mno-zero-initialized-bss");
187  switch (Opts.getObjCDispatchMethod()) {
188  case CodeGenOptions::Legacy:
189    break;
190  case CodeGenOptions::Mixed:
191    Res.push_back("-fobjc-dispatch-method=mixed");
192    break;
193  case CodeGenOptions::NonLegacy:
194    Res.push_back("-fobjc-dispatch-method=non-legacy");
195    break;
196  }
197  if (Opts.RelaxAll)
198    Res.push_back("-mrelax-all");
199  if (Opts.SoftFloat)
200    Res.push_back("-msoft-float");
201  if (Opts.UnwindTables)
202    Res.push_back("-munwind-tables");
203  if (Opts.RelocationModel != "pic") {
204    Res.push_back("-mrelocation-model");
205    Res.push_back(Opts.RelocationModel);
206  }
207  if (!Opts.VerifyModule)
208    Res.push_back("-disable-llvm-verifier");
209}
210
211static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
212                                       std::vector<std::string> &Res) {
213  if (Opts.IncludeSystemHeaders)
214    Res.push_back("-sys-header-deps");
215  if (Opts.UsePhonyTargets)
216    Res.push_back("-MP");
217  if (!Opts.OutputFile.empty()) {
218    Res.push_back("-dependency-file");
219    Res.push_back(Opts.OutputFile);
220  }
221  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
222    Res.push_back("-MT");
223    Res.push_back(Opts.Targets[i]);
224  }
225}
226
227static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
228                                 std::vector<std::string> &Res) {
229  if (Opts.IgnoreWarnings)
230    Res.push_back("-w");
231  if (Opts.NoRewriteMacros)
232    Res.push_back("-Wno-rewrite-macros");
233  if (Opts.Pedantic)
234    Res.push_back("-pedantic");
235  if (Opts.PedanticErrors)
236    Res.push_back("-pedantic-errors");
237  if (!Opts.ShowColumn)
238    Res.push_back("-fno-show-column");
239  if (!Opts.ShowLocation)
240    Res.push_back("-fno-show-source-location");
241  if (!Opts.ShowCarets)
242    Res.push_back("-fno-caret-diagnostics");
243  if (!Opts.ShowFixits)
244    Res.push_back("-fno-diagnostics-fixit-info");
245  if (Opts.ShowSourceRanges)
246    Res.push_back("-fdiagnostics-print-source-range-info");
247  if (Opts.ShowColors)
248    Res.push_back("-fcolor-diagnostics");
249  if (Opts.VerifyDiagnostics)
250    Res.push_back("-verify");
251  if (Opts.BinaryOutput)
252    Res.push_back("-fdiagnostics-binary");
253  if (Opts.ShowOptionNames)
254    Res.push_back("-fdiagnostics-show-option");
255  if (Opts.ShowCategories == 1)
256    Res.push_back("-fdiagnostics-show-category=id");
257  else if (Opts.ShowCategories == 2)
258    Res.push_back("-fdiagnostics-show-category=name");
259  if (Opts.ErrorLimit) {
260    Res.push_back("-ferror-limit");
261    Res.push_back(llvm::utostr(Opts.ErrorLimit));
262  }
263  if (Opts.MacroBacktraceLimit
264                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
265    Res.push_back("-fmacro-backtrace-limit");
266    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
267  }
268  if (Opts.TemplateBacktraceLimit
269                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
270    Res.push_back("-ftemplate-backtrace-limit");
271    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
272  }
273
274  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
275    Res.push_back("-ftabstop");
276    Res.push_back(llvm::utostr(Opts.TabStop));
277  }
278  if (Opts.MessageLength) {
279    Res.push_back("-fmessage-length");
280    Res.push_back(llvm::utostr(Opts.MessageLength));
281  }
282  if (!Opts.DumpBuildInformation.empty()) {
283    Res.push_back("-dump-build-information");
284    Res.push_back(Opts.DumpBuildInformation);
285  }
286  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
287    Res.push_back("-W" + Opts.Warnings[i]);
288}
289
290static const char *getInputKindName(InputKind Kind) {
291  switch (Kind) {
292  case IK_None:              break;
293  case IK_AST:               return "ast";
294  case IK_Asm:               return "assembler-with-cpp";
295  case IK_C:                 return "c";
296  case IK_CXX:               return "c++";
297  case IK_LLVM_IR:           return "ir";
298  case IK_ObjC:              return "objective-c";
299  case IK_ObjCXX:            return "objective-c++";
300  case IK_OpenCL:            return "cl";
301  case IK_PreprocessedC:     return "cpp-output";
302  case IK_PreprocessedCXX:   return "c++-cpp-output";
303  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
304  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
305  }
306
307  llvm_unreachable("Unexpected language kind!");
308  return 0;
309}
310
311static const char *getActionName(frontend::ActionKind Kind) {
312  switch (Kind) {
313  case frontend::PluginAction:
314  case frontend::InheritanceView:
315    llvm_unreachable("Invalid kind!");
316
317  case frontend::ASTDump:                return "-ast-dump";
318  case frontend::ASTPrint:               return "-ast-print";
319  case frontend::ASTPrintXML:            return "-ast-print-xml";
320  case frontend::ASTView:                return "-ast-view";
321  case frontend::BoostCon:               return "-boostcon";
322  case frontend::CreateModule:           return "-create-module";
323  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
324  case frontend::DumpTokens:             return "-dump-tokens";
325  case frontend::EmitAssembly:           return "-S";
326  case frontend::EmitBC:                 return "-emit-llvm-bc";
327  case frontend::EmitHTML:               return "-emit-html";
328  case frontend::EmitLLVM:               return "-emit-llvm";
329  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
330  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
331  case frontend::EmitObj:                return "-emit-obj";
332  case frontend::FixIt:                  return "-fixit";
333  case frontend::GeneratePCH:            return "-emit-pch";
334  case frontend::GeneratePTH:            return "-emit-pth";
335  case frontend::InitOnly:               return "-init-only";
336  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
337  case frontend::PrintDeclContext:       return "-print-decl-contexts";
338  case frontend::PrintPreamble:          return "-print-preamble";
339  case frontend::PrintPreprocessedInput: return "-E";
340  case frontend::RewriteMacros:          return "-rewrite-macros";
341  case frontend::RewriteObjC:            return "-rewrite-objc";
342  case frontend::RewriteTest:            return "-rewrite-test";
343  case frontend::RunAnalysis:            return "-analyze";
344  case frontend::RunPreprocessorOnly:    return "-Eonly";
345  }
346
347  llvm_unreachable("Unexpected language kind!");
348  return 0;
349}
350
351static void FrontendOptsToArgs(const FrontendOptions &Opts,
352                               std::vector<std::string> &Res) {
353  if (!Opts.DebugCodeCompletionPrinter)
354    Res.push_back("-no-code-completion-debug-printer");
355  if (Opts.DisableFree)
356    Res.push_back("-disable-free");
357  if (Opts.RelocatablePCH)
358    Res.push_back("-relocatable-pch");
359  if (Opts.ChainedPCH)
360    Res.push_back("-chained-pch");
361  if (Opts.ShowHelp)
362    Res.push_back("-help");
363  if (Opts.ShowMacrosInCodeCompletion)
364    Res.push_back("-code-completion-macros");
365  if (Opts.ShowCodePatternsInCodeCompletion)
366    Res.push_back("-code-completion-patterns");
367  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
368    Res.push_back("-no-code-completion-globals");
369  if (Opts.ShowStats)
370    Res.push_back("-print-stats");
371  if (Opts.ShowTimers)
372    Res.push_back("-ftime-report");
373  if (Opts.ShowVersion)
374    Res.push_back("-version");
375  if (Opts.FixWhatYouCan)
376    Res.push_back("-fix-what-you-can");
377
378  bool NeedLang = false;
379  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
380    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
381        Opts.Inputs[i].first)
382      NeedLang = true;
383  if (NeedLang) {
384    Res.push_back("-x");
385    Res.push_back(getInputKindName(Opts.Inputs[0].first));
386  }
387  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
388    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
389           "Unable to represent this input vector!");
390    Res.push_back(Opts.Inputs[i].second);
391  }
392
393  if (!Opts.OutputFile.empty()) {
394    Res.push_back("-o");
395    Res.push_back(Opts.OutputFile);
396  }
397  if (!Opts.ViewClassInheritance.empty()) {
398    Res.push_back("-cxx-inheritance-view");
399    Res.push_back(Opts.ViewClassInheritance);
400  }
401  if (!Opts.CodeCompletionAt.FileName.empty()) {
402    Res.push_back("-code-completion-at");
403    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
404                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
405                  llvm::utostr(Opts.CodeCompletionAt.Column));
406  }
407  if (Opts.ProgramAction != frontend::InheritanceView &&
408      Opts.ProgramAction != frontend::PluginAction)
409    Res.push_back(getActionName(Opts.ProgramAction));
410  if (!Opts.ActionName.empty()) {
411    Res.push_back("-plugin");
412    Res.push_back(Opts.ActionName);
413    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
414      Res.push_back("-plugin-arg-" + Opts.ActionName);
415      Res.push_back(Opts.PluginArgs[i]);
416    }
417  }
418  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
419    Res.push_back("-load");
420    Res.push_back(Opts.Plugins[i]);
421  }
422  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
423    Res.push_back("-ast-merge");
424    Res.push_back(Opts.ASTMergeFiles[i]);
425  }
426  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
427    Res.push_back("-import-module");
428    Res.push_back(Opts.Modules[i]);
429  }
430  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
431    Res.push_back("-mllvm");
432    Res.push_back(Opts.LLVMArgs[i]);
433  }
434}
435
436static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
437                                   std::vector<std::string> &Res) {
438  if (Opts.Sysroot != "/") {
439    Res.push_back("-isysroot");
440    Res.push_back(Opts.Sysroot);
441  }
442
443  /// User specified include entries.
444  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
445    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
446    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
447      llvm::report_fatal_error("Invalid option set!");
448    if (E.IsUserSupplied) {
449      if (E.Group == frontend::After) {
450        Res.push_back("-idirafter");
451      } else if (E.Group == frontend::Quoted) {
452        Res.push_back("-iquote");
453      } else if (E.Group == frontend::System) {
454        Res.push_back("-isystem");
455      } else {
456        assert(E.Group == frontend::Angled && "Invalid group!");
457        Res.push_back(E.IsFramework ? "-F" : "-I");
458      }
459    } else {
460      if (E.Group != frontend::Angled && E.Group != frontend::System)
461        llvm::report_fatal_error("Invalid option set!");
462      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
463                    "-iwithprefix");
464    }
465    Res.push_back(E.Path);
466  }
467
468  if (!Opts.EnvIncPath.empty()) {
469    // FIXME: Provide an option for this, and move env detection to driver.
470    llvm::report_fatal_error("Not yet implemented!");
471  }
472  if (!Opts.CEnvIncPath.empty()) {
473    // FIXME: Provide an option for this, and move env detection to driver.
474    llvm::report_fatal_error("Not yet implemented!");
475  }
476  if (!Opts.ObjCEnvIncPath.empty()) {
477    // FIXME: Provide an option for this, and move env detection to driver.
478    llvm::report_fatal_error("Not yet implemented!");
479  }
480  if (!Opts.CXXEnvIncPath.empty()) {
481    // FIXME: Provide an option for this, and move env detection to driver.
482    llvm::report_fatal_error("Not yet implemented!");
483  }
484  if (!Opts.ObjCXXEnvIncPath.empty()) {
485    // FIXME: Provide an option for this, and move env detection to driver.
486    llvm::report_fatal_error("Not yet implemented!");
487  }
488  if (!Opts.ResourceDir.empty()) {
489    Res.push_back("-resource-dir");
490    Res.push_back(Opts.ResourceDir);
491  }
492  if (!Opts.UseStandardIncludes)
493    Res.push_back("-nostdinc");
494  if (!Opts.UseStandardCXXIncludes)
495    Res.push_back("-nostdinc++");
496  if (Opts.Verbose)
497    Res.push_back("-v");
498}
499
500static void LangOptsToArgs(const LangOptions &Opts,
501                           std::vector<std::string> &Res) {
502  LangOptions DefaultLangOpts;
503
504  // FIXME: Need to set -std to get all the implicit options.
505
506  // FIXME: We want to only pass options relative to the defaults, which
507  // requires constructing a target. :(
508  //
509  // It would be better to push the all target specific choices into the driver,
510  // so that everything below that was more uniform.
511
512  if (Opts.Trigraphs)
513    Res.push_back("-trigraphs");
514  // Implicit based on the input kind:
515  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
516  // Implicit based on the input language standard:
517  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
518  if (Opts.DollarIdents)
519    Res.push_back("-fdollars-in-identifiers");
520  if (Opts.GNUMode && !Opts.GNUKeywords)
521    Res.push_back("-fno-gnu-keywords");
522  if (!Opts.GNUMode && Opts.GNUKeywords)
523    Res.push_back("-fgnu-keywords");
524  if (Opts.Microsoft)
525    Res.push_back("-fms-extensions");
526  if (Opts.ObjCNonFragileABI)
527    Res.push_back("-fobjc-nonfragile-abi");
528  if (Opts.ObjCNonFragileABI2)
529    Res.push_back("-fobjc-nonfragile-abi2");
530  // NoInline is implicit.
531  if (!Opts.CXXOperatorNames)
532    Res.push_back("-fno-operator-names");
533  if (Opts.PascalStrings)
534    Res.push_back("-fpascal-strings");
535  if (Opts.CatchUndefined)
536    Res.push_back("-fcatch-undefined-behavior");
537  if (Opts.WritableStrings)
538    Res.push_back("-fwritable-strings");
539  if (Opts.ConstStrings)
540    Res.push_back("-Wwrite-strings");
541  if (!Opts.LaxVectorConversions)
542    Res.push_back("-fno-lax-vector-conversions");
543  if (Opts.AltiVec)
544    Res.push_back("-faltivec");
545  if (Opts.Exceptions)
546    Res.push_back("-fexceptions");
547  if (Opts.SjLjExceptions)
548    Res.push_back("-fsjlj-exceptions");
549  if (!Opts.RTTI)
550    Res.push_back("-fno-rtti");
551  if (!Opts.NeXTRuntime)
552    Res.push_back("-fgnu-runtime");
553  if (Opts.Freestanding)
554    Res.push_back("-ffreestanding");
555  if (Opts.NoBuiltin)
556    Res.push_back("-fno-builtin");
557  if (!Opts.AssumeSaneOperatorNew)
558    Res.push_back("-fno-assume-sane-operator-new");
559  if (!Opts.ThreadsafeStatics)
560    Res.push_back("-fno-threadsafe-statics");
561  if (Opts.POSIXThreads)
562    Res.push_back("-pthread");
563  if (Opts.Blocks)
564    Res.push_back("-fblocks");
565  if (Opts.EmitAllDecls)
566    Res.push_back("-femit-all-decls");
567  if (Opts.MathErrno)
568    Res.push_back("-fmath-errno");
569  switch (Opts.getSignedOverflowBehavior()) {
570  case LangOptions::SOB_Undefined: break;
571  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
572  case LangOptions::SOB_Trapping:  Res.push_back("-ftrapv"); break;
573  }
574  if (Opts.HeinousExtensions)
575    Res.push_back("-fheinous-gnu-extensions");
576  // Optimize is implicit.
577  // OptimizeSize is implicit.
578  if (Opts.Static)
579    Res.push_back("-static-define");
580  if (Opts.DumpRecordLayouts)
581    Res.push_back("-fdump-record-layouts");
582  if (Opts.DumpVTableLayouts)
583    Res.push_back("-fdump-vtable-layouts");
584  if (Opts.NoBitFieldTypeAlign)
585    Res.push_back("-fno-bitfield-type-alignment");
586  if (Opts.SjLjExceptions)
587    Res.push_back("-fsjlj-exceptions");
588  if (Opts.PICLevel) {
589    Res.push_back("-pic-level");
590    Res.push_back(llvm::utostr(Opts.PICLevel));
591  }
592  if (Opts.ObjCGCBitmapPrint)
593    Res.push_back("-print-ivar-layout");
594  if (Opts.NoConstantCFStrings)
595    Res.push_back("-fno-constant-cfstrings");
596  if (!Opts.AccessControl)
597    Res.push_back("-fno-access-control");
598  if (!Opts.CharIsSigned)
599    Res.push_back("-fno-signed-char");
600  if (Opts.ShortWChar)
601    Res.push_back("-fshort-wchar");
602  if (!Opts.ElideConstructors)
603    Res.push_back("-fno-elide-constructors");
604  if (Opts.getGCMode() != LangOptions::NonGC) {
605    if (Opts.getGCMode() == LangOptions::HybridGC) {
606      Res.push_back("-fobjc-gc");
607    } else {
608      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
609      Res.push_back("-fobjc-gc-only");
610    }
611  }
612  if (Opts.getVisibilityMode() != LangOptions::Default) {
613    Res.push_back("-fvisibility");
614    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
615      Res.push_back("hidden");
616    } else {
617      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
618             "Invalid visibility!");
619      Res.push_back("protected");
620    }
621  }
622  if (Opts.InlineVisibilityHidden)
623    Res.push_back("-fvisibility-inlines-hidden");
624
625  if (Opts.getStackProtectorMode() != 0) {
626    Res.push_back("-stack-protector");
627    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
628  }
629  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
630    Res.push_back("-ftemplate-depth");
631    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
632  }
633  if (!Opts.ObjCConstantStringClass.empty()) {
634    Res.push_back("-fconstant-string-class");
635    Res.push_back(Opts.ObjCConstantStringClass);
636  }
637}
638
639static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
640                                   std::vector<std::string> &Res) {
641  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
642    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
643                  Opts.Macros[i].first);
644  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
645    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
646    Res.push_back("-include");
647    Res.push_back(Opts.Includes[i]);
648  }
649  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
650    Res.push_back("-imacros");
651    Res.push_back(Opts.MacroIncludes[i]);
652  }
653  if (!Opts.UsePredefines)
654    Res.push_back("-undef");
655  if (Opts.DetailedRecord)
656    Res.push_back("-detailed-preprocessing-record");
657  if (!Opts.ImplicitPCHInclude.empty()) {
658    Res.push_back("-include-pch");
659    Res.push_back(Opts.ImplicitPCHInclude);
660  }
661  if (!Opts.ImplicitPTHInclude.empty()) {
662    Res.push_back("-include-pth");
663    Res.push_back(Opts.ImplicitPTHInclude);
664  }
665  if (!Opts.TokenCache.empty()) {
666    if (Opts.ImplicitPTHInclude.empty()) {
667      Res.push_back("-token-cache");
668      Res.push_back(Opts.TokenCache);
669    } else
670      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
671             "Unsupported option combination!");
672  }
673  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
674    Res.push_back("-remap-file");
675    Res.push_back(Opts.RemappedFiles[i].first + ";" +
676                  Opts.RemappedFiles[i].second);
677  }
678}
679
680static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
681                                         std::vector<std::string> &Res) {
682  if (!Opts.ShowCPP && !Opts.ShowMacros)
683    llvm::report_fatal_error("Invalid option combination!");
684
685  if (Opts.ShowCPP && Opts.ShowMacros)
686    Res.push_back("-dD");
687  else if (!Opts.ShowCPP && Opts.ShowMacros)
688    Res.push_back("-dM");
689
690  if (!Opts.ShowLineMarkers)
691    Res.push_back("-P");
692  if (Opts.ShowComments)
693    Res.push_back("-C");
694  if (Opts.ShowMacroComments)
695    Res.push_back("-CC");
696}
697
698static void TargetOptsToArgs(const TargetOptions &Opts,
699                             std::vector<std::string> &Res) {
700  Res.push_back("-triple");
701  Res.push_back(Opts.Triple);
702  if (!Opts.CPU.empty()) {
703    Res.push_back("-target-cpu");
704    Res.push_back(Opts.CPU);
705  }
706  if (!Opts.ABI.empty()) {
707    Res.push_back("-target-abi");
708    Res.push_back(Opts.ABI);
709  }
710  if (!Opts.LinkerVersion.empty()) {
711    Res.push_back("-target-linker-version");
712    Res.push_back(Opts.LinkerVersion);
713  }
714  Res.push_back("-cxx-abi");
715  Res.push_back(Opts.CXXABI);
716  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
717    Res.push_back("-target-feature");
718    Res.push_back(Opts.Features[i]);
719  }
720}
721
722void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
723  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
724  CodeGenOptsToArgs(getCodeGenOpts(), Res);
725  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
726  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
727  FrontendOptsToArgs(getFrontendOpts(), Res);
728  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
729  LangOptsToArgs(getLangOpts(), Res);
730  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
731  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
732  TargetOptsToArgs(getTargetOpts(), Res);
733}
734
735//===----------------------------------------------------------------------===//
736// Deserialization (to args)
737//===----------------------------------------------------------------------===//
738
739using namespace clang::driver;
740using namespace clang::driver::cc1options;
741
742//
743
744static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
745                              Diagnostic &Diags) {
746  using namespace cc1options;
747
748  Opts.AnalysisList.clear();
749#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
750  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
751#include "clang/Frontend/Analyses.def"
752
753  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
754    llvm::StringRef Name = A->getValue(Args);
755    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
756#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
757      .Case(CMDFLAG, NAME##Model)
758#include "clang/Frontend/Analyses.def"
759      .Default(NumStores);
760    // FIXME: Error handling.
761    if (Value == NumStores)
762      Diags.Report(diag::err_drv_invalid_value)
763        << A->getAsString(Args) << Name;
764    else
765      Opts.AnalysisStoreOpt = Value;
766  }
767
768  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
769    llvm::StringRef Name = A->getValue(Args);
770    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
771#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
772      .Case(CMDFLAG, NAME##Model)
773#include "clang/Frontend/Analyses.def"
774      .Default(NumConstraints);
775    // FIXME: Error handling.
776    if (Value == NumConstraints)
777      Diags.Report(diag::err_drv_invalid_value)
778        << A->getAsString(Args) << Name;
779    else
780      Opts.AnalysisConstraintsOpt = Value;
781  }
782
783  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
784    llvm::StringRef Name = A->getValue(Args);
785    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
786#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
787      .Case(CMDFLAG, PD_##NAME)
788#include "clang/Frontend/Analyses.def"
789      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
790    // FIXME: Error handling.
791    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
792      Diags.Report(diag::err_drv_invalid_value)
793        << A->getAsString(Args) << Name;
794    else
795      Opts.AnalysisDiagOpt = Value;
796  }
797
798  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
799  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
800  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
801  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
802  Opts.AnalyzeNestedBlocks =
803    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
804  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
805  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
806  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
807  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
808  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
809  Opts.EnableExperimentalInternalChecks =
810    Args.hasArg(OPT_analyzer_experimental_internal_checks);
811  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
812  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
813  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
814  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
815  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
816}
817
818static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
819                             Diagnostic &Diags) {
820  using namespace cc1options;
821  // -Os implies -O2
822  if (Args.hasArg(OPT_Os))
823    Opts.OptimizationLevel = 2;
824  else {
825    Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
826    if (Opts.OptimizationLevel > 3) {
827      Diags.Report(diag::err_drv_invalid_value)
828        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
829      Opts.OptimizationLevel = 3;
830    }
831  }
832
833  // We must always run at least the always inlining pass.
834  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
835    : CodeGenOptions::OnlyAlwaysInlining;
836
837  Opts.DebugInfo = Args.hasArg(OPT_g);
838  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
839  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
840  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
841  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
842  Opts.NoCommon = Args.hasArg(OPT_fno_common);
843  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
844  Opts.OptimizeSize = Args.hasArg(OPT_Os);
845  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
846                            Args.hasArg(OPT_ffreestanding));
847  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
848                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
849
850  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
851  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
852  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
853  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
854  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
855  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
856  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
857  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
858  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
859  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
860  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
861  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
862  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
863  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
864  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
865
866  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
867  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
868
869  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
870  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
871
872  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
873
874  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
875    llvm::StringRef Name = A->getValue(Args);
876    unsigned Method = llvm::StringSwitch<unsigned>(Name)
877      .Case("legacy", CodeGenOptions::Legacy)
878      .Case("non-legacy", CodeGenOptions::NonLegacy)
879      .Case("mixed", CodeGenOptions::Mixed)
880      .Default(~0U);
881    if (Method == ~0U)
882      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
883    else
884      Opts.ObjCDispatchMethod = Method;
885  }
886}
887
888static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
889                                      ArgList &Args) {
890  using namespace cc1options;
891  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
892  Opts.Targets = Args.getAllArgValues(OPT_MT);
893  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
894  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
895}
896
897static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
898                                Diagnostic &Diags) {
899  using namespace cc1options;
900  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
901  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
902  Opts.Pedantic = Args.hasArg(OPT_pedantic);
903  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
904  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
905  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
906  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
907  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
908  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
909  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
910
911  llvm::StringRef ShowOverloads =
912    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
913  if (ShowOverloads == "best")
914    Opts.ShowOverloads = Diagnostic::Ovl_Best;
915  else if (ShowOverloads == "all")
916    Opts.ShowOverloads = Diagnostic::Ovl_All;
917  else
918    Diags.Report(diag::err_drv_invalid_value)
919      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
920      << ShowOverloads;
921
922  llvm::StringRef ShowCategory =
923    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
924  if (ShowCategory == "none")
925    Opts.ShowCategories = 0;
926  else if (ShowCategory == "id")
927    Opts.ShowCategories = 1;
928  else if (ShowCategory == "name")
929    Opts.ShowCategories = 2;
930  else
931    Diags.Report(diag::err_drv_invalid_value)
932      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
933      << ShowCategory;
934
935  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
936  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
937  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
938  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
939  Opts.MacroBacktraceLimit
940    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
941                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
942  Opts.TemplateBacktraceLimit
943    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
944                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
945                         Diags);
946  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
947                                    DiagnosticOptions::DefaultTabStop, Diags);
948  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
949    Diags.Report(diag::warn_ignoring_ftabstop_value)
950      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
951    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
952  }
953  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
954  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
955  Opts.Warnings = Args.getAllArgValues(OPT_W);
956}
957
958static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
959                                   Diagnostic &Diags) {
960  using namespace cc1options;
961  Opts.ProgramAction = frontend::ParseSyntaxOnly;
962  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
963    switch (A->getOption().getID()) {
964    default:
965      assert(0 && "Invalid option in group!");
966    case OPT_ast_dump:
967      Opts.ProgramAction = frontend::ASTDump; break;
968    case OPT_ast_print:
969      Opts.ProgramAction = frontend::ASTPrint; break;
970    case OPT_ast_print_xml:
971      Opts.ProgramAction = frontend::ASTPrintXML; break;
972    case OPT_ast_view:
973      Opts.ProgramAction = frontend::ASTView; break;
974    case OPT_boostcon:
975      Opts.ProgramAction = frontend::BoostCon; break;
976    case OPT_dump_raw_tokens:
977      Opts.ProgramAction = frontend::DumpRawTokens; break;
978    case OPT_dump_tokens:
979      Opts.ProgramAction = frontend::DumpTokens; break;
980    case OPT_S:
981      Opts.ProgramAction = frontend::EmitAssembly; break;
982    case OPT_emit_llvm_bc:
983      Opts.ProgramAction = frontend::EmitBC; break;
984    case OPT_emit_html:
985      Opts.ProgramAction = frontend::EmitHTML; break;
986    case OPT_emit_llvm:
987      Opts.ProgramAction = frontend::EmitLLVM; break;
988    case OPT_emit_llvm_only:
989      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
990    case OPT_emit_codegen_only:
991      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
992    case OPT_emit_obj:
993      Opts.ProgramAction = frontend::EmitObj; break;
994    case OPT_fixit_EQ:
995      Opts.FixItSuffix = A->getValue(Args);
996      // fall-through!
997    case OPT_fixit:
998      Opts.ProgramAction = frontend::FixIt; break;
999    case OPT_emit_pch:
1000      Opts.ProgramAction = frontend::GeneratePCH; break;
1001    case OPT_emit_pth:
1002      Opts.ProgramAction = frontend::GeneratePTH; break;
1003    case OPT_init_only:
1004      Opts.ProgramAction = frontend::InitOnly; break;
1005    case OPT_fsyntax_only:
1006      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1007    case OPT_print_decl_contexts:
1008      Opts.ProgramAction = frontend::PrintDeclContext; break;
1009    case OPT_print_preamble:
1010      Opts.ProgramAction = frontend::PrintPreamble; break;
1011    case OPT_E:
1012      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1013    case OPT_rewrite_macros:
1014      Opts.ProgramAction = frontend::RewriteMacros; break;
1015    case OPT_rewrite_objc:
1016      Opts.ProgramAction = frontend::RewriteObjC; break;
1017    case OPT_rewrite_test:
1018      Opts.ProgramAction = frontend::RewriteTest; break;
1019    case OPT_analyze:
1020      Opts.ProgramAction = frontend::RunAnalysis; break;
1021    case OPT_Eonly:
1022      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1023    case OPT_create_module:
1024      Opts.ProgramAction = frontend::CreateModule; break;
1025    }
1026  }
1027
1028  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1029    Opts.Plugins.push_back(A->getValue(Args,0));
1030    Opts.ProgramAction = frontend::PluginAction;
1031    Opts.ActionName = A->getValue(Args);
1032
1033    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1034           end = Args.filtered_end(); it != end; ++it) {
1035      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1036        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1037    }
1038  }
1039
1040  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1041    Opts.CodeCompletionAt =
1042      ParsedSourceLocation::FromString(A->getValue(Args));
1043    if (Opts.CodeCompletionAt.FileName.empty())
1044      Diags.Report(diag::err_drv_invalid_value)
1045        << A->getAsString(Args) << A->getValue(Args);
1046  }
1047  Opts.DebugCodeCompletionPrinter =
1048    !Args.hasArg(OPT_no_code_completion_debug_printer);
1049  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1050
1051  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1052  Opts.Plugins = Args.getAllArgValues(OPT_load);
1053  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1054  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1055  Opts.ShowHelp = Args.hasArg(OPT_help);
1056  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1057  Opts.ShowCodePatternsInCodeCompletion
1058    = Args.hasArg(OPT_code_completion_patterns);
1059  Opts.ShowGlobalSymbolsInCodeCompletion
1060    = !Args.hasArg(OPT_no_code_completion_globals);
1061  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1062  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1063  Opts.ShowVersion = Args.hasArg(OPT_version);
1064  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1065  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1066  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1067  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1068  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1069
1070  InputKind DashX = IK_None;
1071  if (const Arg *A = Args.getLastArg(OPT_x)) {
1072    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1073      .Case("c", IK_C)
1074      .Case("cl", IK_OpenCL)
1075      .Case("c", IK_C)
1076      .Case("cl", IK_OpenCL)
1077      .Case("c++", IK_CXX)
1078      .Case("objective-c", IK_ObjC)
1079      .Case("objective-c++", IK_ObjCXX)
1080      .Case("cpp-output", IK_PreprocessedC)
1081      .Case("assembler-with-cpp", IK_Asm)
1082      .Case("c++-cpp-output", IK_PreprocessedCXX)
1083      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1084      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1085      .Case("c-header", IK_C)
1086      .Case("objective-c-header", IK_ObjC)
1087      .Case("c++-header", IK_CXX)
1088      .Case("objective-c++-header", IK_ObjCXX)
1089      .Case("ast", IK_AST)
1090      .Case("ir", IK_LLVM_IR)
1091      .Default(IK_None);
1092    if (DashX == IK_None)
1093      Diags.Report(diag::err_drv_invalid_value)
1094        << A->getAsString(Args) << A->getValue(Args);
1095  }
1096
1097  // '-' is the default input if none is given.
1098  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1099  Opts.Inputs.clear();
1100  if (Inputs.empty())
1101    Inputs.push_back("-");
1102  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1103    InputKind IK = DashX;
1104    if (IK == IK_None) {
1105      IK = FrontendOptions::getInputKindForExtension(
1106        llvm::StringRef(Inputs[i]).rsplit('.').second);
1107      // FIXME: Remove this hack.
1108      if (i == 0)
1109        DashX = IK;
1110    }
1111    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1112  }
1113
1114  return DashX;
1115}
1116
1117std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1118                                                 void *MainAddr) {
1119  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1120
1121  if (!P.isEmpty()) {
1122    P.eraseComponent();  // Remove /clang from foo/bin/clang
1123    P.eraseComponent();  // Remove /bin   from foo/bin
1124
1125    // Get foo/lib/clang/<version>/include
1126    P.appendComponent("lib");
1127    P.appendComponent("clang");
1128    P.appendComponent(CLANG_VERSION_STRING);
1129  }
1130
1131  return P.str();
1132}
1133
1134static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1135  using namespace cc1options;
1136  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1137  Opts.Verbose = Args.hasArg(OPT_v);
1138  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1139  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1140  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1141  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1142
1143  // Add -I... and -F... options in order.
1144  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1145         ie = Args.filtered_end(); it != ie; ++it)
1146    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1147                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F));
1148
1149  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1150  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1151  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1152                                             OPT_iwithprefixbefore),
1153         ie = Args.filtered_end(); it != ie; ++it) {
1154    const Arg *A = *it;
1155    if (A->getOption().matches(OPT_iprefix))
1156      Prefix = A->getValue(Args);
1157    else if (A->getOption().matches(OPT_iwithprefix))
1158      Opts.AddPath(Prefix.str() + A->getValue(Args),
1159                   frontend::System, false, false);
1160    else
1161      Opts.AddPath(Prefix.str() + A->getValue(Args),
1162                   frontend::Angled, false, false);
1163  }
1164
1165  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1166         ie = Args.filtered_end(); it != ie; ++it)
1167    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false);
1168  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1169         ie = Args.filtered_end(); it != ie; ++it)
1170    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false);
1171  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1172         ie = Args.filtered_end(); it != ie; ++it)
1173    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false);
1174
1175  // FIXME: Need options for the various environment variables!
1176}
1177
1178static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1179                          Diagnostic &Diags) {
1180  // FIXME: Cleanup per-file based stuff.
1181
1182  // Set some properties which depend soley on the input kind; it would be nice
1183  // to move these to the language standard, and have the driver resolve the
1184  // input kind + language standard.
1185  if (IK == IK_Asm) {
1186    Opts.AsmPreprocessor = 1;
1187  } else if (IK == IK_ObjC ||
1188             IK == IK_ObjCXX ||
1189             IK == IK_PreprocessedObjC ||
1190             IK == IK_PreprocessedObjCXX) {
1191    Opts.ObjC1 = Opts.ObjC2 = 1;
1192  }
1193
1194  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1195  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1196    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1197#define LANGSTANDARD(id, name, desc, features) \
1198      .Case(name, LangStandard::lang_##id)
1199#include "clang/Frontend/LangStandards.def"
1200      .Default(LangStandard::lang_unspecified);
1201    if (LangStd == LangStandard::lang_unspecified)
1202      Diags.Report(diag::err_drv_invalid_value)
1203        << A->getAsString(Args) << A->getValue(Args);
1204  }
1205
1206  if (LangStd == LangStandard::lang_unspecified) {
1207    // Based on the base language, pick one.
1208    switch (IK) {
1209    case IK_None:
1210    case IK_AST:
1211    case IK_LLVM_IR:
1212      assert(0 && "Invalid input kind!");
1213    case IK_OpenCL:
1214      LangStd = LangStandard::lang_opencl;
1215      break;
1216    case IK_Asm:
1217    case IK_C:
1218    case IK_PreprocessedC:
1219    case IK_ObjC:
1220    case IK_PreprocessedObjC:
1221      LangStd = LangStandard::lang_gnu99;
1222      break;
1223    case IK_CXX:
1224    case IK_PreprocessedCXX:
1225    case IK_ObjCXX:
1226    case IK_PreprocessedObjCXX:
1227      LangStd = LangStandard::lang_gnucxx98;
1228      break;
1229    }
1230  }
1231
1232  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1233  Opts.BCPLComment = Std.hasBCPLComments();
1234  Opts.C99 = Std.isC99();
1235  Opts.CPlusPlus = Std.isCPlusPlus();
1236  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1237  Opts.Digraphs = Std.hasDigraphs();
1238  Opts.GNUMode = Std.isGNUMode();
1239  Opts.GNUInline = !Std.isC99();
1240  Opts.HexFloats = Std.hasHexFloats();
1241  Opts.ImplicitInt = Std.hasImplicitInt();
1242
1243  // OpenCL has some additional defaults.
1244  if (LangStd == LangStandard::lang_opencl) {
1245    Opts.OpenCL = 1;
1246    Opts.AltiVec = 1;
1247    Opts.CXXOperatorNames = 1;
1248    Opts.LaxVectorConversions = 1;
1249  }
1250
1251  // OpenCL and C++ both have bool, true, false keywords.
1252  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1253
1254  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1255  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1256  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1257  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1258  // name, as it doesn't seem a useful distinction.
1259  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1260                                  Opts.GNUMode);
1261
1262  if (Opts.CPlusPlus)
1263    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1264
1265  if (Args.hasArg(OPT_fobjc_gc_only))
1266    Opts.setGCMode(LangOptions::GCOnly);
1267  else if (Args.hasArg(OPT_fobjc_gc))
1268    Opts.setGCMode(LangOptions::HybridGC);
1269
1270  if (Args.hasArg(OPT_print_ivar_layout))
1271    Opts.ObjCGCBitmapPrint = 1;
1272  if (Args.hasArg(OPT_fno_constant_cfstrings))
1273    Opts.NoConstantCFStrings = 1;
1274
1275  if (Args.hasArg(OPT_faltivec))
1276    Opts.AltiVec = 1;
1277
1278  if (Args.hasArg(OPT_pthread))
1279    Opts.POSIXThreads = 1;
1280
1281  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1282  if (Vis == "default")
1283    Opts.setVisibilityMode(LangOptions::Default);
1284  else if (Vis == "hidden")
1285    Opts.setVisibilityMode(LangOptions::Hidden);
1286  else if (Vis == "protected")
1287    Opts.setVisibilityMode(LangOptions::Protected);
1288  else
1289    Diags.Report(diag::err_drv_invalid_value)
1290      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1291
1292  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1293    Opts.InlineVisibilityHidden = 1;
1294
1295  if (Args.hasArg(OPT_ftrapv))
1296    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1297  else if (Args.hasArg(OPT_fwrapv))
1298    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1299
1300  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1301  // is specified, or -std is set to a conforming mode.
1302  Opts.Trigraphs = !Opts.GNUMode;
1303  if (Args.hasArg(OPT_trigraphs))
1304    Opts.Trigraphs = 1;
1305
1306  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1307                                   OPT_fno_dollars_in_identifiers,
1308                                   !Opts.AsmPreprocessor);
1309  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1310  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1311  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1312  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1313  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1314    Opts.LaxVectorConversions = 0;
1315  if (Args.hasArg(OPT_fno_threadsafe_statics))
1316    Opts.ThreadsafeStatics = 0;
1317  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1318  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1319  Opts.Blocks = Args.hasArg(OPT_fblocks);
1320  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1321  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1322  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1323  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1324  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1325  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1326  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1327  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1328  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1329  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1330                                               Diags);
1331  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1332  Opts.ObjCConstantStringClass =
1333    Args.getLastArgValue(OPT_fconstant_string_class);
1334  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1335  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1336  if (Opts.ObjCNonFragileABI2)
1337    Opts.ObjCNonFragileABI = true;
1338  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1339  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1340  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1341  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1342  Opts.Static = Args.hasArg(OPT_static_define);
1343  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1344  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1345  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1346  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1347  Opts.OptimizeSize = 0;
1348
1349  // FIXME: Eliminate this dependency.
1350  unsigned Opt =
1351    Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1352  Opts.Optimize = Opt != 0;
1353
1354  // This is the __NO_INLINE__ define, which just depends on things like the
1355  // optimization level and -fno-inline, not actually whether the backend has
1356  // inlining enabled.
1357  //
1358  // FIXME: This is affected by other options (-fno-inline).
1359  Opts.NoInline = !Opt;
1360
1361  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1362  switch (SSP) {
1363  default:
1364    Diags.Report(diag::err_drv_invalid_value)
1365      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1366    break;
1367  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1368  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1369  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1370  }
1371}
1372
1373static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1374                                  Diagnostic &Diags) {
1375  using namespace cc1options;
1376  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1377  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1378  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1379      Opts.TokenCache = A->getValue(Args);
1380  else
1381    Opts.TokenCache = Opts.ImplicitPTHInclude;
1382  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1383  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1384  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1385
1386  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1387    llvm::StringRef Value(A->getValue(Args));
1388    size_t Comma = Value.find(',');
1389    unsigned Bytes = 0;
1390    unsigned EndOfLine = 0;
1391
1392    if (Comma == llvm::StringRef::npos ||
1393        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1394        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1395      Diags.Report(diag::err_drv_preamble_format);
1396    else {
1397      Opts.PrecompiledPreambleBytes.first = Bytes;
1398      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1399    }
1400  }
1401
1402  // Add macros from the command line.
1403  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1404         ie = Args.filtered_end(); it != ie; ++it) {
1405    if ((*it)->getOption().matches(OPT_D))
1406      Opts.addMacroDef((*it)->getValue(Args));
1407    else
1408      Opts.addMacroUndef((*it)->getValue(Args));
1409  }
1410
1411  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1412
1413  // Add the ordered list of -includes.
1414  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1415                                             OPT_include_pth),
1416         ie = Args.filtered_end(); it != ie; ++it) {
1417    const Arg *A = *it;
1418    // PCH is handled specially, we need to extra the original include path.
1419    if (A->getOption().matches(OPT_include_pch)) {
1420      std::string OriginalFile =
1421        ASTReader::getOriginalSourceFile(A->getValue(Args), Diags);
1422      if (OriginalFile.empty())
1423        continue;
1424
1425      Opts.Includes.push_back(OriginalFile);
1426    } else
1427      Opts.Includes.push_back(A->getValue(Args));
1428  }
1429
1430  // Include 'altivec.h' if -faltivec option present
1431  if (Args.hasArg(OPT_faltivec))
1432    Opts.Includes.push_back("altivec.h");
1433
1434  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1435         ie = Args.filtered_end(); it != ie; ++it) {
1436    const Arg *A = *it;
1437    std::pair<llvm::StringRef,llvm::StringRef> Split =
1438      llvm::StringRef(A->getValue(Args)).split(';');
1439
1440    if (Split.second.empty()) {
1441      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1442      continue;
1443    }
1444
1445    Opts.addRemappedFile(Split.first, Split.second);
1446  }
1447}
1448
1449static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1450                                        ArgList &Args) {
1451  using namespace cc1options;
1452  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1453  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1454  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1455  Opts.ShowComments = Args.hasArg(OPT_C);
1456  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1457}
1458
1459static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1460  using namespace cc1options;
1461  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1462  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1463  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1464  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1465  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1466  Opts.Triple = Args.getLastArgValue(OPT_triple);
1467
1468  // Use the host triple if unspecified.
1469  if (Opts.Triple.empty())
1470    Opts.Triple = llvm::sys::getHostTriple();
1471
1472  // Use the Itanium C++ ABI if unspecified.
1473  if (Opts.CXXABI.empty())
1474    Opts.CXXABI = "itanium";
1475}
1476
1477//
1478
1479void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1480                                        const char **ArgBegin,
1481                                        const char **ArgEnd,
1482                                        Diagnostic &Diags) {
1483  // Parse the arguments.
1484  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1485  unsigned MissingArgIndex, MissingArgCount;
1486  llvm::OwningPtr<InputArgList> Args(
1487    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1488
1489  // Check for missing argument error.
1490  if (MissingArgCount)
1491    Diags.Report(diag::err_drv_missing_argument)
1492      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1493
1494  // Issue errors on unknown arguments.
1495  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1496         ie = Args->filtered_end(); it != ie; ++it)
1497    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1498
1499  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1500  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1501  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1502  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1503  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1504  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1505  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1506    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1507  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1508  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1509  ParseTargetArgs(Res.getTargetOpts(), *Args);
1510}
1511