xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 1c201fbf73b1ecf2949cb9eebe9d023ad6ac6b81) 
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/Frontend/PCHReader.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"
29 using namespace clang;
30 
31 static 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 
41 static 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 
51 static 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 
61 static 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 
75 static 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 }
116 
117 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                               std::vector<std::string> &Res) {
119   if (Opts.DebugInfo)
120     Res.push_back("-g");
121   if (Opts.DisableLLVMOpts)
122     Res.push_back("-disable-llvm-optzns");
123   if (Opts.DisableRedZone)
124     Res.push_back("-disable-red-zone");
125   if (!Opts.DwarfDebugFlags.empty()) {
126     Res.push_back("-dwarf-debug-flags");
127     Res.push_back(Opts.DwarfDebugFlags);
128   }
129   if (!Opts.MergeAllConstants)
130     Res.push_back("-fno-merge-all-constants");
131   if (Opts.NoCommon)
132     Res.push_back("-fno-common");
133   if (Opts.NoImplicitFloat)
134     Res.push_back("-no-implicit-float");
135   if (Opts.OptimizeSize) {
136     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137     Res.push_back("-Os");
138   } else if (Opts.OptimizationLevel != 0)
139     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140   if (!Opts.MainFileName.empty()) {
141     Res.push_back("-main-file-name");
142     Res.push_back(Opts.MainFileName);
143   }
144   // SimplifyLibCalls is only derived.
145   // TimePasses is only derived.
146   // UnitAtATime is unused.
147   // UnrollLoops is only derived.
148   // VerifyModule is only derived.
149   // Inlining is only derived.
150 
151   if (Opts.AsmVerbose)
152     Res.push_back("-masm-verbose");
153   if (!Opts.CodeModel.empty()) {
154     Res.push_back("-mcode-model");
155     Res.push_back(Opts.CodeModel);
156   }
157   if (!Opts.DebugPass.empty()) {
158     Res.push_back("-mdebug-pass");
159     Res.push_back(Opts.DebugPass);
160   }
161   if (Opts.DisableFPElim)
162     Res.push_back("-mdisable-fp-elim");
163   if (!Opts.FloatABI.empty()) {
164     Res.push_back("-mfloat-abi");
165     Res.push_back(Opts.FloatABI);
166   }
167   if (!Opts.LimitFloatPrecision.empty()) {
168     Res.push_back("-mlimit-float-precision");
169     Res.push_back(Opts.LimitFloatPrecision);
170   }
171   if (Opts.NoZeroInitializedInBSS)
172     Res.push_back("-mno-zero-initialized-bss");
173   if (Opts.ObjCLegacyDispatch)
174     Res.push_back("-fobjc-legacy-dispatch");
175   if (Opts.SoftFloat)
176     Res.push_back("-msoft-float");
177   if (Opts.UnwindTables)
178     Res.push_back("-munwind-tables");
179   if (Opts.RelocationModel != "pic") {
180     Res.push_back("-mrelocation-model");
181     Res.push_back(Opts.RelocationModel);
182   }
183   if (Opts.CXXCtorDtorAliases)
184     Res.push_back("-mconstructor-aliases");
185   if (!Opts.VerifyModule)
186     Res.push_back("-disable-llvm-verifier");
187 }
188 
189 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
190                                        std::vector<std::string> &Res) {
191   if (Opts.IncludeSystemHeaders)
192     Res.push_back("-sys-header-deps");
193   if (Opts.UsePhonyTargets)
194     Res.push_back("-MP");
195   if (!Opts.OutputFile.empty()) {
196     Res.push_back("-dependency-file");
197     Res.push_back(Opts.OutputFile);
198   }
199   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
200     Res.push_back("-MT");
201     Res.push_back(Opts.Targets[i]);
202   }
203 }
204 
205 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
206                                  std::vector<std::string> &Res) {
207   if (Opts.IgnoreWarnings)
208     Res.push_back("-w");
209   if (Opts.NoRewriteMacros)
210     Res.push_back("-Wno-rewrite-macros");
211   if (Opts.Pedantic)
212     Res.push_back("-pedantic");
213   if (Opts.PedanticErrors)
214     Res.push_back("-pedantic-errors");
215   if (!Opts.ShowColumn)
216     Res.push_back("-fno-show-column");
217   if (!Opts.ShowLocation)
218     Res.push_back("-fno-show-source-location");
219   if (!Opts.ShowCarets)
220     Res.push_back("-fno-caret-diagnostics");
221   if (!Opts.ShowFixits)
222     Res.push_back("-fno-diagnostics-fixit-info");
223   if (Opts.ShowSourceRanges)
224     Res.push_back("-fdiagnostics-print-source-range-info");
225   if (Opts.ShowColors)
226     Res.push_back("-fcolor-diagnostics");
227   if (Opts.VerifyDiagnostics)
228     Res.push_back("-verify");
229   if (Opts.BinaryOutput)
230     Res.push_back("-fdiagnostics-binary");
231   if (Opts.ShowOptionNames)
232     Res.push_back("-fdiagnostics-show-option");
233   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
234     Res.push_back("-ftabstop");
235     Res.push_back(llvm::utostr(Opts.TabStop));
236   }
237   if (Opts.MessageLength) {
238     Res.push_back("-fmessage-length");
239     Res.push_back(llvm::utostr(Opts.MessageLength));
240   }
241   if (!Opts.DumpBuildInformation.empty()) {
242     Res.push_back("-dump-build-information");
243     Res.push_back(Opts.DumpBuildInformation);
244   }
245   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
246     Res.push_back("-W" + Opts.Warnings[i]);
247 }
248 
249 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
250   switch (Kind) {
251   case FrontendOptions::IK_None:              break;
252   case FrontendOptions::IK_AST:               return "ast";
253   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
254   case FrontendOptions::IK_C:                 return "c";
255   case FrontendOptions::IK_CXX:               return "c++";
256   case FrontendOptions::IK_ObjC:              return "objective-c";
257   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
258   case FrontendOptions::IK_OpenCL:            return "cl";
259   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
260   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
261   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
262   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
263   }
264 
265   llvm_unreachable("Unexpected language kind!");
266   return 0;
267 }
268 
269 static const char *getActionName(frontend::ActionKind Kind) {
270   switch (Kind) {
271   case frontend::PluginAction:
272   case frontend::InheritanceView:
273     llvm_unreachable("Invalid kind!");
274 
275   case frontend::ASTDump:                return "-ast-dump";
276   case frontend::ASTPrint:               return "-ast-print";
277   case frontend::ASTPrintXML:            return "-ast-print-xml";
278   case frontend::ASTView:                return "-ast-view";
279   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
280   case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
281   case frontend::DumpTokens:             return "-dump-tokens";
282   case frontend::EmitAssembly:           return "-S";
283   case frontend::EmitBC:                 return "-emit-llvm-bc";
284   case frontend::EmitHTML:               return "-emit-html";
285   case frontend::EmitLLVM:               return "-emit-llvm";
286   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
287   case frontend::EmitObj:                return "-emit-obj";
288   case frontend::FixIt:                  return "-fixit";
289   case frontend::GeneratePCH:            return "-emit-pch";
290   case frontend::GeneratePTH:            return "-emit-pth";
291   case frontend::InitOnly:               return "-init-only";
292   case frontend::ParseNoop:              return "-parse-noop";
293   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
294   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
295   case frontend::PrintDeclContext:       return "-print-decl-contexts";
296   case frontend::PrintPreprocessedInput: return "-E";
297   case frontend::RewriteMacros:          return "-rewrite-macros";
298   case frontend::RewriteObjC:            return "-rewrite-objc";
299   case frontend::RewriteTest:            return "-rewrite-test";
300   case frontend::RunAnalysis:            return "-analyze";
301   case frontend::RunPreprocessorOnly:    return "-Eonly";
302   }
303 
304   llvm_unreachable("Unexpected language kind!");
305   return 0;
306 }
307 
308 static void FrontendOptsToArgs(const FrontendOptions &Opts,
309                                std::vector<std::string> &Res) {
310   if (!Opts.DebugCodeCompletionPrinter)
311     Res.push_back("-no-code-completion-debug-printer");
312   if (Opts.DisableFree)
313     Res.push_back("-disable-free");
314   if (Opts.RelocatablePCH)
315     Res.push_back("-relocatable-pch");
316   if (Opts.ShowHelp)
317     Res.push_back("-help");
318   if (Opts.ShowMacrosInCodeCompletion)
319     Res.push_back("-code-completion-macros");
320   if (Opts.ShowStats)
321     Res.push_back("-print-stats");
322   if (Opts.ShowTimers)
323     Res.push_back("-ftime-report");
324   if (Opts.ShowVersion)
325     Res.push_back("-version");
326 
327   bool NeedLang = false;
328   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
329     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
330         Opts.Inputs[i].first)
331       NeedLang = true;
332   if (NeedLang) {
333     Res.push_back("-x");
334     Res.push_back(getInputKindName(Opts.Inputs[0].first));
335   }
336   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
337     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
338            "Unable to represent this input vector!");
339     Res.push_back(Opts.Inputs[i].second);
340   }
341 
342   if (!Opts.OutputFile.empty()) {
343     Res.push_back("-o");
344     Res.push_back(Opts.OutputFile);
345   }
346   if (!Opts.ViewClassInheritance.empty()) {
347     Res.push_back("-cxx-inheritance-view");
348     Res.push_back(Opts.ViewClassInheritance);
349   }
350   for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
351     Res.push_back("-fixit-at");
352     Res.push_back(Opts.FixItLocations[i].FileName + ":" +
353                   llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
354                   llvm::utostr(Opts.FixItLocations[i].Column));
355   }
356   if (!Opts.CodeCompletionAt.FileName.empty()) {
357     Res.push_back("-code-completion-at");
358     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
359                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
360                   llvm::utostr(Opts.CodeCompletionAt.Column));
361   }
362   if (Opts.ProgramAction != frontend::InheritanceView &&
363       Opts.ProgramAction != frontend::PluginAction)
364     Res.push_back(getActionName(Opts.ProgramAction));
365   if (!Opts.ActionName.empty()) {
366     Res.push_back("-plugin");
367     Res.push_back(Opts.ActionName);
368   }
369   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
370     Res.push_back("-load");
371     Res.push_back(Opts.Plugins[i]);
372   }
373   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
374     Res.push_back("-ast-merge");
375     Res.push_back(Opts.ASTMergeFiles[i]);
376   }
377 }
378 
379 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
380                                    std::vector<std::string> &Res) {
381   if (Opts.Sysroot != "/") {
382     Res.push_back("-isysroot");
383     Res.push_back(Opts.Sysroot);
384   }
385 
386   /// User specified include entries.
387   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
388     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
389     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
390       llvm::llvm_report_error("Invalid option set!");
391     if (E.IsUserSupplied) {
392       if (E.Group == frontend::After) {
393         Res.push_back("-idirafter");
394       } else if (E.Group == frontend::Quoted) {
395         Res.push_back("-iquote");
396       } else if (E.Group == frontend::System) {
397         Res.push_back("-isystem");
398       } else {
399         assert(E.Group == frontend::Angled && "Invalid group!");
400         Res.push_back(E.IsFramework ? "-F" : "-I");
401       }
402     } else {
403       if (E.Group != frontend::Angled && E.Group != frontend::System)
404         llvm::llvm_report_error("Invalid option set!");
405       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
406                     "-iwithprefix");
407     }
408     Res.push_back(E.Path);
409   }
410 
411   if (!Opts.EnvIncPath.empty()) {
412     // FIXME: Provide an option for this, and move env detection to driver.
413     llvm::llvm_report_error("Not yet implemented!");
414   }
415   if (!Opts.CEnvIncPath.empty()) {
416     // FIXME: Provide an option for this, and move env detection to driver.
417     llvm::llvm_report_error("Not yet implemented!");
418   }
419   if (!Opts.ObjCEnvIncPath.empty()) {
420     // FIXME: Provide an option for this, and move env detection to driver.
421     llvm::llvm_report_error("Not yet implemented!");
422   }
423   if (!Opts.CXXEnvIncPath.empty()) {
424     // FIXME: Provide an option for this, and move env detection to driver.
425     llvm::llvm_report_error("Not yet implemented!");
426   }
427   if (!Opts.ObjCXXEnvIncPath.empty()) {
428     // FIXME: Provide an option for this, and move env detection to driver.
429     llvm::llvm_report_error("Not yet implemented!");
430   }
431   if (!Opts.ResourceDir.empty()) {
432     Res.push_back("-resource-dir");
433     Res.push_back(Opts.ResourceDir);
434   }
435   if (!Opts.UseStandardIncludes)
436     Res.push_back("-nostdinc");
437   if (Opts.Verbose)
438     Res.push_back("-v");
439 }
440 
441 static void LangOptsToArgs(const LangOptions &Opts,
442                            std::vector<std::string> &Res) {
443   LangOptions DefaultLangOpts;
444 
445   // FIXME: Need to set -std to get all the implicit options.
446 
447   // FIXME: We want to only pass options relative to the defaults, which
448   // requires constructing a target. :(
449   //
450   // It would be better to push the all target specific choices into the driver,
451   // so that everything below that was more uniform.
452 
453   if (Opts.Trigraphs)
454     Res.push_back("-trigraphs");
455   // Implicit based on the input kind:
456   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
457   // Implicit based on the input language standard:
458   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
459   if (Opts.DollarIdents)
460     Res.push_back("-fdollars-in-identifiers");
461   if (Opts.Microsoft)
462     Res.push_back("-fms-extensions");
463   if (Opts.ObjCNonFragileABI)
464     Res.push_back("-fobjc-nonfragile-abi");
465   if (Opts.ObjCNonFragileABI2)
466     Res.push_back("-fobjc-nonfragile-abi2");
467   // NoInline is implicit.
468   if (!Opts.CXXOperatorNames)
469     Res.push_back("-fno-operator-names");
470   if (Opts.PascalStrings)
471     Res.push_back("-fpascal-strings");
472   if (Opts.CatchUndefined)
473     Res.push_back("-fcatch-undefined-behavior");
474   if (Opts.WritableStrings)
475     Res.push_back("-fwritable-strings");
476   if (Opts.ConstStrings)
477     Res.push_back("-Wwrite-strings");
478   if (!Opts.LaxVectorConversions)
479     Res.push_back("-fno-lax-vector-conversions");
480   if (Opts.AltiVec)
481     Res.push_back("-faltivec");
482   if (Opts.Exceptions)
483     Res.push_back("-fexceptions");
484   if (Opts.SjLjExceptions)
485     Res.push_back("-fsjlj-exceptions");
486   if (!Opts.RTTI)
487     Res.push_back("-fno-rtti");
488   if (!Opts.NeXTRuntime)
489     Res.push_back("-fgnu-runtime");
490   if (Opts.Freestanding)
491     Res.push_back("-ffreestanding");
492   if (Opts.NoBuiltin)
493     Res.push_back("-fno-builtin");
494   if (!Opts.AssumeSaneOperatorNew)
495     Res.push_back("-fno-assume-sane-operator-new");
496   if (!Opts.ThreadsafeStatics)
497     Res.push_back("-fno-threadsafe-statics");
498   if (Opts.POSIXThreads)
499     Res.push_back("-pthread");
500   if (Opts.Blocks)
501     Res.push_back("-fblocks");
502   if (Opts.EmitAllDecls)
503     Res.push_back("-femit-all-decls");
504   if (Opts.MathErrno)
505     Res.push_back("-fmath-errno");
506   if (Opts.OverflowChecking)
507     Res.push_back("-ftrapv");
508   if (Opts.HeinousExtensions)
509     Res.push_back("-fheinous-gnu-extensions");
510   // Optimize is implicit.
511   // OptimizeSize is implicit.
512   if (Opts.Static)
513     Res.push_back("-static-define");
514   if (Opts.PICLevel) {
515     Res.push_back("-pic-level");
516     Res.push_back(llvm::utostr(Opts.PICLevel));
517   }
518   if (Opts.ObjCGCBitmapPrint)
519     Res.push_back("-print-ivar-layout");
520   // FIXME: Don't forget to update when the default changes!
521   if (Opts.AccessControl)
522     Res.push_back("-faccess-control");
523   if (!Opts.CharIsSigned)
524     Res.push_back("-fno-signed-char");
525   if (Opts.ShortWChar)
526     Res.push_back("-fshort-wchar");
527   if (!Opts.ElideConstructors)
528     Res.push_back("-fno-elide-constructors");
529   if (Opts.getGCMode() != LangOptions::NonGC) {
530     if (Opts.getGCMode() == LangOptions::HybridGC) {
531       Res.push_back("-fobjc-gc");
532     } else {
533       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
534       Res.push_back("-fobjc-gc-only");
535     }
536   }
537   if (Opts.getVisibilityMode() != LangOptions::Default) {
538     Res.push_back("-fvisibility");
539     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
540       Res.push_back("hidden");
541     } else {
542       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
543              "Invalid visibility!");
544       Res.push_back("protected");
545     }
546   }
547   if (Opts.getStackProtectorMode() != 0) {
548     Res.push_back("-stack-protector");
549     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
550   }
551   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
552     Res.push_back("-ftemplate-depth");
553     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
554   }
555   if (!Opts.ObjCConstantStringClass.empty()) {
556     Res.push_back("-fconstant-string-class");
557     Res.push_back(Opts.ObjCConstantStringClass);
558   }
559 }
560 
561 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
562                                    std::vector<std::string> &Res) {
563   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
564     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
565                   Opts.Macros[i].first);
566   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
567     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
568     Res.push_back("-include");
569     Res.push_back(Opts.Includes[i]);
570   }
571   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
572     Res.push_back("-imacros");
573     Res.push_back(Opts.MacroIncludes[i]);
574   }
575   if (!Opts.UsePredefines)
576     Res.push_back("-undef");
577   if (Opts.DetailedRecord)
578     Res.push_back("-detailed-preprocessing-record");
579   if (!Opts.ImplicitPCHInclude.empty()) {
580     Res.push_back("-include-pch");
581     Res.push_back(Opts.ImplicitPCHInclude);
582   }
583   if (!Opts.ImplicitPTHInclude.empty()) {
584     Res.push_back("-include-pth");
585     Res.push_back(Opts.ImplicitPTHInclude);
586   }
587   if (!Opts.TokenCache.empty()) {
588     if (Opts.ImplicitPTHInclude.empty()) {
589       Res.push_back("-token-cache");
590       Res.push_back(Opts.TokenCache);
591     } else
592       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
593              "Unsupported option combination!");
594   }
595   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
596     Res.push_back("-remap-file");
597     Res.push_back(Opts.RemappedFiles[i].first + ";" +
598                   Opts.RemappedFiles[i].second);
599   }
600 }
601 
602 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
603                                          std::vector<std::string> &Res) {
604   if (!Opts.ShowCPP && !Opts.ShowMacros)
605     llvm::llvm_report_error("Invalid option combination!");
606 
607   if (Opts.ShowCPP && Opts.ShowMacros)
608     Res.push_back("-dD");
609   else if (!Opts.ShowCPP && Opts.ShowMacros)
610     Res.push_back("-dM");
611 
612   if (!Opts.ShowLineMarkers)
613     Res.push_back("-P");
614   if (Opts.ShowComments)
615     Res.push_back("-C");
616   if (Opts.ShowMacroComments)
617     Res.push_back("-CC");
618 }
619 
620 static void TargetOptsToArgs(const TargetOptions &Opts,
621                              std::vector<std::string> &Res) {
622   Res.push_back("-triple");
623   Res.push_back(Opts.Triple);
624   if (!Opts.CPU.empty()) {
625     Res.push_back("-target-cpu");
626     Res.push_back(Opts.CPU);
627   }
628   if (!Opts.ABI.empty()) {
629     Res.push_back("-target-abi");
630     Res.push_back(Opts.ABI);
631   }
632   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
633     Res.push_back("-target-feature");
634     Res.push_back(Opts.Features[i]);
635   }
636 }
637 
638 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
639   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
640   CodeGenOptsToArgs(getCodeGenOpts(), Res);
641   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
642   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
643   FrontendOptsToArgs(getFrontendOpts(), Res);
644   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
645   LangOptsToArgs(getLangOpts(), Res);
646   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
647   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
648   TargetOptsToArgs(getTargetOpts(), Res);
649 }
650 
651 //===----------------------------------------------------------------------===//
652 // Deserialization (to args)
653 //===----------------------------------------------------------------------===//
654 
655 using namespace clang::driver;
656 using namespace clang::driver::cc1options;
657 
658 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
659                                        llvm::StringRef Default = "") {
660   if (Arg *A = Args.getLastArg(ID))
661     return A->getValue(Args);
662   return Default;
663 }
664 
665 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
666                               int Default, Diagnostic &Diags) {
667   Arg *A = Args.getLastArg(ID);
668   if (!A)
669     return Default;
670 
671   int Res = Default;
672   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
673     Diags.Report(diag::err_drv_invalid_int_value)
674         << A->getAsString(Args) << A->getValue(Args);
675 
676   return Res;
677 }
678 
679 static std::vector<std::string>
680 getAllArgValues(ArgList &Args, cc1options::ID ID) {
681   llvm::SmallVector<const char *, 16> Values;
682   Args.AddAllArgValues(Values, ID);
683   return std::vector<std::string>(Values.begin(), Values.end());
684 }
685 
686 //
687 
688 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
689                               Diagnostic &Diags) {
690   using namespace cc1options;
691 
692   Opts.AnalysisList.clear();
693 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
694   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
695 #include "clang/Frontend/Analyses.def"
696 
697   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
698     llvm::StringRef Name = A->getValue(Args);
699     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
700 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
701       .Case(CMDFLAG, NAME##Model)
702 #include "clang/Frontend/Analyses.def"
703       .Default(NumStores);
704     // FIXME: Error handling.
705     if (Value == NumStores)
706       Diags.Report(diag::err_drv_invalid_value)
707         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
708     else
709       Opts.AnalysisStoreOpt = Value;
710   }
711 
712   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
713     llvm::StringRef Name = A->getValue(Args);
714     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
715 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
716       .Case(CMDFLAG, NAME##Model)
717 #include "clang/Frontend/Analyses.def"
718       .Default(NumConstraints);
719     // FIXME: Error handling.
720     if (Value == NumConstraints)
721       Diags.Report(diag::err_drv_invalid_value)
722         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
723     else
724       Opts.AnalysisConstraintsOpt = Value;
725   }
726 
727   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
728     llvm::StringRef Name = A->getValue(Args);
729     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
730 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
731       .Case(CMDFLAG, PD_##NAME)
732 #include "clang/Frontend/Analyses.def"
733       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
734     // FIXME: Error handling.
735     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
736       Diags.Report(diag::err_drv_invalid_value)
737         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
738     else
739       Opts.AnalysisDiagOpt = Value;
740   }
741 
742   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
743   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
744   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
745   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
746   Opts.AnalyzeNestedBlocks =
747     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
748   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
749   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
750   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
751   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
752   Opts.EnableExperimentalInternalChecks =
753     Args.hasArg(OPT_analyzer_experimental_internal_checks);
754   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
755 }
756 
757 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
758                              Diagnostic &Diags) {
759   using namespace cc1options;
760   // -Os implies -O2
761   if (Args.hasArg(OPT_Os))
762     Opts.OptimizationLevel = 2;
763   else {
764     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
765     if (Opts.OptimizationLevel > 3) {
766       Diags.Report(diag::err_drv_invalid_value)
767         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
768       Opts.OptimizationLevel = 3;
769     }
770   }
771 
772   // We must always run at least the always inlining pass.
773   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
774     : CodeGenOptions::OnlyAlwaysInlining;
775 
776   Opts.DebugInfo = Args.hasArg(OPT_g);
777   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
778   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
779   Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
780   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
781   Opts.NoCommon = Args.hasArg(OPT_fno_common);
782   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
783   Opts.OptimizeSize = Args.hasArg(OPT_Os);
784   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
785 
786   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
787   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
788   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
789   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
790   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
791   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
792   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
793   Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
794   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
795   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
796   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
797   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
798 
799   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
800   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
801 }
802 
803 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
804                                       ArgList &Args) {
805   using namespace cc1options;
806   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
807   Opts.Targets = getAllArgValues(Args, OPT_MT);
808   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
809   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
810 }
811 
812 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
813                                 Diagnostic &Diags) {
814   using namespace cc1options;
815   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
816   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
817   Opts.Pedantic = Args.hasArg(OPT_pedantic);
818   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
819   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
820   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
821   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
822   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
823   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
824   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
825   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
826   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
827   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
828   Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
829                                     DiagnosticOptions::DefaultTabStop, Diags);
830   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
831     Diags.Report(diag::warn_ignoring_ftabstop_value)
832       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
833     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
834   }
835   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
836   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
837   Opts.Warnings = getAllArgValues(Args, OPT_W);
838 }
839 
840 static FrontendOptions::InputKind
841 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
842   using namespace cc1options;
843   Opts.ProgramAction = frontend::ParseSyntaxOnly;
844   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
845     switch (A->getOption().getID()) {
846     default:
847       assert(0 && "Invalid option in group!");
848     case OPT_ast_dump:
849       Opts.ProgramAction = frontend::ASTDump; break;
850     case OPT_ast_print:
851       Opts.ProgramAction = frontend::ASTPrint; break;
852     case OPT_ast_print_xml:
853       Opts.ProgramAction = frontend::ASTPrintXML; break;
854     case OPT_ast_view:
855       Opts.ProgramAction = frontend::ASTView; break;
856     case OPT_dump_raw_tokens:
857       Opts.ProgramAction = frontend::DumpRawTokens; break;
858     case OPT_dump_record_layouts:
859       Opts.ProgramAction = frontend::DumpRecordLayouts; break;
860     case OPT_dump_tokens:
861       Opts.ProgramAction = frontend::DumpTokens; break;
862     case OPT_S:
863       Opts.ProgramAction = frontend::EmitAssembly; break;
864     case OPT_emit_llvm_bc:
865       Opts.ProgramAction = frontend::EmitBC; break;
866     case OPT_emit_html:
867       Opts.ProgramAction = frontend::EmitHTML; break;
868     case OPT_emit_llvm:
869       Opts.ProgramAction = frontend::EmitLLVM; break;
870     case OPT_emit_llvm_only:
871       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
872     case OPT_emit_obj:
873       Opts.ProgramAction = frontend::EmitObj; break;
874     case OPT_fixit:
875       Opts.ProgramAction = frontend::FixIt; break;
876     case OPT_emit_pch:
877       Opts.ProgramAction = frontend::GeneratePCH; break;
878     case OPT_emit_pth:
879       Opts.ProgramAction = frontend::GeneratePTH; break;
880     case OPT_init_only:
881       Opts.ProgramAction = frontend::InitOnly; break;
882     case OPT_parse_noop:
883       Opts.ProgramAction = frontend::ParseNoop; break;
884     case OPT_parse_print_callbacks:
885       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
886     case OPT_fsyntax_only:
887       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
888     case OPT_print_decl_contexts:
889       Opts.ProgramAction = frontend::PrintDeclContext; break;
890     case OPT_E:
891       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
892     case OPT_rewrite_macros:
893       Opts.ProgramAction = frontend::RewriteMacros; break;
894     case OPT_rewrite_objc:
895       Opts.ProgramAction = frontend::RewriteObjC; break;
896     case OPT_rewrite_test:
897       Opts.ProgramAction = frontend::RewriteTest; break;
898     case OPT_analyze:
899       Opts.ProgramAction = frontend::RunAnalysis; break;
900     case OPT_Eonly:
901       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
902     }
903   }
904   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
905     Opts.ProgramAction = frontend::PluginAction;
906     Opts.ActionName = A->getValue(Args);
907   }
908 
909   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
910     Opts.CodeCompletionAt =
911       ParsedSourceLocation::FromString(A->getValue(Args));
912     if (Opts.CodeCompletionAt.FileName.empty())
913       Diags.Report(diag::err_drv_invalid_value)
914         << A->getAsString(Args) << A->getValue(Args);
915   }
916   Opts.DebugCodeCompletionPrinter =
917     !Args.hasArg(OPT_no_code_completion_debug_printer);
918   Opts.DisableFree = Args.hasArg(OPT_disable_free);
919 
920   Opts.FixItLocations.clear();
921   for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
922          ie = Args.filtered_end(); it != ie; ++it) {
923     const char *Loc = it->getValue(Args);
924     ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
925 
926     if (PSL.FileName.empty()) {
927       Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
928       continue;
929     }
930 
931     Opts.FixItLocations.push_back(PSL);
932   }
933 
934   Opts.OutputFile = getLastArgValue(Args, OPT_o);
935   Opts.Plugins = getAllArgValues(Args, OPT_load);
936   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
937   Opts.ShowHelp = Args.hasArg(OPT_help);
938   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
939   Opts.ShowStats = Args.hasArg(OPT_print_stats);
940   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
941   Opts.ShowVersion = Args.hasArg(OPT_version);
942   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
943   Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
944 
945   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
946   if (const Arg *A = Args.getLastArg(OPT_x)) {
947     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
948       .Case("c", FrontendOptions::IK_C)
949       .Case("cl", FrontendOptions::IK_OpenCL)
950       .Case("c", FrontendOptions::IK_C)
951       .Case("cl", FrontendOptions::IK_OpenCL)
952       .Case("c++", FrontendOptions::IK_CXX)
953       .Case("objective-c", FrontendOptions::IK_ObjC)
954       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
955       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
956       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
957       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
958       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
959       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
960       .Case("c-header", FrontendOptions::IK_C)
961       .Case("objective-c-header", FrontendOptions::IK_ObjC)
962       .Case("c++-header", FrontendOptions::IK_CXX)
963       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
964       .Case("ast", FrontendOptions::IK_AST)
965       .Default(FrontendOptions::IK_None);
966     if (DashX == FrontendOptions::IK_None)
967       Diags.Report(diag::err_drv_invalid_value)
968         << A->getAsString(Args) << A->getValue(Args);
969   }
970 
971   // '-' is the default input if none is given.
972   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
973   Opts.Inputs.clear();
974   if (Inputs.empty())
975     Inputs.push_back("-");
976   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
977     FrontendOptions::InputKind IK = DashX;
978     if (IK == FrontendOptions::IK_None) {
979       IK = FrontendOptions::getInputKindForExtension(
980         llvm::StringRef(Inputs[i]).rsplit('.').second);
981       // FIXME: Remove this hack.
982       if (i == 0)
983         DashX = IK;
984     }
985     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
986   }
987 
988   return DashX;
989 }
990 
991 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
992                                                  void *MainAddr) {
993   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
994 
995   if (!P.isEmpty()) {
996     P.eraseComponent();  // Remove /clang from foo/bin/clang
997     P.eraseComponent();  // Remove /bin   from foo/bin
998 
999     // Get foo/lib/clang/<version>/include
1000     P.appendComponent("lib");
1001     P.appendComponent("clang");
1002     P.appendComponent(CLANG_VERSION_STRING);
1003   }
1004 
1005   return P.str();
1006 }
1007 
1008 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1009   using namespace cc1options;
1010   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1011   Opts.Verbose = Args.hasArg(OPT_v);
1012   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1013   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1014   Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1015 
1016   // Add -I... and -F... options in order.
1017   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1018          ie = Args.filtered_end(); it != ie; ++it)
1019     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1020                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1021 
1022   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1023   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1024   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1025                                              OPT_iwithprefixbefore),
1026          ie = Args.filtered_end(); it != ie; ++it) {
1027     if (it->getOption().matches(OPT_iprefix))
1028       Prefix = it->getValue(Args);
1029     else if (it->getOption().matches(OPT_iwithprefix))
1030       Opts.AddPath(Prefix.str() + it->getValue(Args),
1031                    frontend::System, false, false);
1032     else
1033       Opts.AddPath(Prefix.str() + it->getValue(Args),
1034                    frontend::Angled, false, false);
1035   }
1036 
1037   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1038          ie = Args.filtered_end(); it != ie; ++it)
1039     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1040   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1041          ie = Args.filtered_end(); it != ie; ++it)
1042     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1043   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1044          ie = Args.filtered_end(); it != ie; ++it)
1045     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1046 
1047   // FIXME: Need options for the various environment variables!
1048 }
1049 
1050 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1051                           FrontendOptions::InputKind IK,
1052                           Diagnostic &Diags) {
1053   // FIXME: Cleanup per-file based stuff.
1054 
1055   // Set some properties which depend soley on the input kind; it would be nice
1056   // to move these to the language standard, and have the driver resolve the
1057   // input kind + language standard.
1058   if (IK == FrontendOptions::IK_Asm) {
1059     Opts.AsmPreprocessor = 1;
1060   } else if (IK == FrontendOptions::IK_ObjC ||
1061              IK == FrontendOptions::IK_ObjCXX ||
1062              IK == FrontendOptions::IK_PreprocessedObjC ||
1063              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1064     Opts.ObjC1 = Opts.ObjC2 = 1;
1065   }
1066 
1067   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1068   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1069     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1070 #define LANGSTANDARD(id, name, desc, features) \
1071       .Case(name, LangStandard::lang_##id)
1072 #include "clang/Frontend/LangStandards.def"
1073       .Default(LangStandard::lang_unspecified);
1074     if (LangStd == LangStandard::lang_unspecified)
1075       Diags.Report(diag::err_drv_invalid_value)
1076         << A->getAsString(Args) << A->getValue(Args);
1077   }
1078 
1079   if (LangStd == LangStandard::lang_unspecified) {
1080     // Based on the base language, pick one.
1081     switch (IK) {
1082     case FrontendOptions::IK_None:
1083     case FrontendOptions::IK_AST:
1084       assert(0 && "Invalid input kind!");
1085     case FrontendOptions::IK_OpenCL:
1086       LangStd = LangStandard::lang_opencl;
1087       break;
1088     case FrontendOptions::IK_Asm:
1089     case FrontendOptions::IK_C:
1090     case FrontendOptions::IK_PreprocessedC:
1091     case FrontendOptions::IK_ObjC:
1092     case FrontendOptions::IK_PreprocessedObjC:
1093       LangStd = LangStandard::lang_gnu99;
1094       break;
1095     case FrontendOptions::IK_CXX:
1096     case FrontendOptions::IK_PreprocessedCXX:
1097     case FrontendOptions::IK_ObjCXX:
1098     case FrontendOptions::IK_PreprocessedObjCXX:
1099       LangStd = LangStandard::lang_gnucxx98;
1100       break;
1101     }
1102   }
1103 
1104   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1105   Opts.BCPLComment = Std.hasBCPLComments();
1106   Opts.C99 = Std.isC99();
1107   Opts.CPlusPlus = Std.isCPlusPlus();
1108   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1109   Opts.Digraphs = Std.hasDigraphs();
1110   Opts.GNUMode = Std.isGNUMode();
1111   Opts.GNUInline = !Std.isC99();
1112   Opts.HexFloats = Std.hasHexFloats();
1113   Opts.ImplicitInt = Std.hasImplicitInt();
1114 
1115   // OpenCL has some additional defaults.
1116   if (LangStd == LangStandard::lang_opencl) {
1117     Opts.OpenCL = 1;
1118     Opts.AltiVec = 1;
1119     Opts.CXXOperatorNames = 1;
1120     Opts.LaxVectorConversions = 1;
1121   }
1122 
1123   // OpenCL and C++ both have bool, true, false keywords.
1124   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1125 
1126   if (Opts.CPlusPlus)
1127     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1128 
1129   if (Args.hasArg(OPT_fobjc_gc_only))
1130     Opts.setGCMode(LangOptions::GCOnly);
1131   else if (Args.hasArg(OPT_fobjc_gc))
1132     Opts.setGCMode(LangOptions::HybridGC);
1133 
1134   if (Args.hasArg(OPT_print_ivar_layout))
1135     Opts.ObjCGCBitmapPrint = 1;
1136 
1137   if (Args.hasArg(OPT_faltivec))
1138     Opts.AltiVec = 1;
1139 
1140   if (Args.hasArg(OPT_pthread))
1141     Opts.POSIXThreads = 1;
1142 
1143   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1144                                         "default");
1145   if (Vis == "default")
1146     Opts.setVisibilityMode(LangOptions::Default);
1147   else if (Vis == "hidden")
1148     Opts.setVisibilityMode(LangOptions::Hidden);
1149   else if (Vis == "protected")
1150     Opts.setVisibilityMode(LangOptions::Protected);
1151   else
1152     Diags.Report(diag::err_drv_invalid_value)
1153       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1154 
1155   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1156 
1157   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1158   // is specified, or -std is set to a conforming mode.
1159   Opts.Trigraphs = !Opts.GNUMode;
1160   if (Args.hasArg(OPT_trigraphs))
1161     Opts.Trigraphs = 1;
1162 
1163   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1164                                    OPT_fno_dollars_in_identifiers,
1165                                    !Opts.AsmPreprocessor);
1166   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1167   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1168   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1169   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1170   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1171     Opts.LaxVectorConversions = 0;
1172   if (Args.hasArg(OPT_fno_threadsafe_statics))
1173     Opts.ThreadsafeStatics = 0;
1174   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1175   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1176   Opts.Blocks = Args.hasArg(OPT_fblocks);
1177   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1178   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1179   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1180   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1181   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1182   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1183   Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1184   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1185   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1186   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1187                                                Diags);
1188   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1189   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1190                                                  OPT_fconstant_string_class);
1191   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1192   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1193   if (Opts.ObjCNonFragileABI2)
1194     Opts.ObjCNonFragileABI = true;
1195   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1196   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1197   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1198   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1199   Opts.Static = Args.hasArg(OPT_static_define);
1200   Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1201   Opts.OptimizeSize = 0;
1202 
1203   // FIXME: Eliminate this dependency.
1204   unsigned Opt =
1205     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1206   Opts.Optimize = Opt != 0;
1207 
1208   // This is the __NO_INLINE__ define, which just depends on things like the
1209   // optimization level and -fno-inline, not actually whether the backend has
1210   // inlining enabled.
1211   //
1212   // FIXME: This is affected by other options (-fno-inline).
1213   Opts.NoInline = !Opt;
1214 
1215   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1216   switch (SSP) {
1217   default:
1218     Diags.Report(diag::err_drv_invalid_value)
1219       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1220     break;
1221   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1222   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1223   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1224   }
1225 }
1226 
1227 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1228                                   Diagnostic &Diags) {
1229   using namespace cc1options;
1230   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1231   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1232   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1233       Opts.TokenCache = A->getValue(Args);
1234   else
1235     Opts.TokenCache = Opts.ImplicitPTHInclude;
1236   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1237   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1238   // Add macros from the command line.
1239   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1240          ie = Args.filtered_end(); it != ie; ++it) {
1241     if (it->getOption().matches(OPT_D))
1242       Opts.addMacroDef(it->getValue(Args));
1243     else
1244       Opts.addMacroUndef(it->getValue(Args));
1245   }
1246 
1247   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1248 
1249   // Add the ordered list of -includes.
1250   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1251                                              OPT_include_pth),
1252          ie = Args.filtered_end(); it != ie; ++it) {
1253     // PCH is handled specially, we need to extra the original include path.
1254     if (it->getOption().matches(OPT_include_pch)) {
1255       std::string OriginalFile =
1256         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1257       if (OriginalFile.empty())
1258         continue;
1259 
1260       Opts.Includes.push_back(OriginalFile);
1261     } else
1262       Opts.Includes.push_back(it->getValue(Args));
1263   }
1264 
1265   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1266          ie = Args.filtered_end(); it != ie; ++it) {
1267     std::pair<llvm::StringRef,llvm::StringRef> Split =
1268       llvm::StringRef(it->getValue(Args)).split(';');
1269 
1270     if (Split.second.empty()) {
1271       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1272       continue;
1273     }
1274 
1275     Opts.addRemappedFile(Split.first, Split.second);
1276   }
1277 }
1278 
1279 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1280                                         ArgList &Args) {
1281   using namespace cc1options;
1282   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1283   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1284   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1285   Opts.ShowComments = Args.hasArg(OPT_C);
1286   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1287 }
1288 
1289 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1290   using namespace cc1options;
1291   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1292   Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1293   Opts.Triple = getLastArgValue(Args, OPT_triple);
1294   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1295 
1296   // Use the host triple if unspecified.
1297   if (Opts.Triple.empty())
1298     Opts.Triple = llvm::sys::getHostTriple();
1299 }
1300 
1301 //
1302 
1303 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1304                                         const char **ArgBegin,
1305                                         const char **ArgEnd,
1306                                         Diagnostic &Diags) {
1307   // Parse the arguments.
1308   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1309   unsigned MissingArgIndex, MissingArgCount;
1310   llvm::OwningPtr<InputArgList> Args(
1311     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1312 
1313   // Check for missing argument error.
1314   if (MissingArgCount)
1315     Diags.Report(diag::err_drv_missing_argument)
1316       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1317 
1318   // Issue errors on unknown arguments.
1319   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1320          ie = Args->filtered_end(); it != ie; ++it)
1321     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1322 
1323   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1324   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1325   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1326   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1327   FrontendOptions::InputKind DashX =
1328     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1329   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1330   if (DashX != FrontendOptions::IK_AST)
1331     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1332   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1333   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1334   ParseTargetArgs(Res.getTargetOpts(), *Args);
1335 }
1336