xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 64b046fce43cea864c81da8a35edd9c9b226ec3e) 
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.CXAAtExit)
158     Res.push_back("-fno-use-cxa-atexit");
159   if (Opts.CXXCtorDtorAliases)
160     Res.push_back("-mconstructor-aliases");
161   if (!Opts.DebugPass.empty()) {
162     Res.push_back("-mdebug-pass");
163     Res.push_back(Opts.DebugPass);
164   }
165   if (Opts.DisableFPElim)
166     Res.push_back("-mdisable-fp-elim");
167   if (!Opts.FloatABI.empty()) {
168     Res.push_back("-mfloat-abi");
169     Res.push_back(Opts.FloatABI);
170   }
171   if (!Opts.LimitFloatPrecision.empty()) {
172     Res.push_back("-mlimit-float-precision");
173     Res.push_back(Opts.LimitFloatPrecision);
174   }
175   if (Opts.NoZeroInitializedInBSS)
176     Res.push_back("-mno-zero-initialized-bss");
177   if (Opts.ObjCLegacyDispatch)
178     Res.push_back("-fobjc-legacy-dispatch");
179   if (Opts.SoftFloat)
180     Res.push_back("-msoft-float");
181   if (Opts.UnwindTables)
182     Res.push_back("-munwind-tables");
183   if (Opts.RelocationModel != "pic") {
184     Res.push_back("-mrelocation-model");
185     Res.push_back(Opts.RelocationModel);
186   }
187   if (!Opts.VerifyModule)
188     Res.push_back("-disable-llvm-verifier");
189 }
190 
191 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
192                                        std::vector<std::string> &Res) {
193   if (Opts.IncludeSystemHeaders)
194     Res.push_back("-sys-header-deps");
195   if (Opts.UsePhonyTargets)
196     Res.push_back("-MP");
197   if (!Opts.OutputFile.empty()) {
198     Res.push_back("-dependency-file");
199     Res.push_back(Opts.OutputFile);
200   }
201   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
202     Res.push_back("-MT");
203     Res.push_back(Opts.Targets[i]);
204   }
205 }
206 
207 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
208                                  std::vector<std::string> &Res) {
209   if (Opts.IgnoreWarnings)
210     Res.push_back("-w");
211   if (Opts.NoRewriteMacros)
212     Res.push_back("-Wno-rewrite-macros");
213   if (Opts.Pedantic)
214     Res.push_back("-pedantic");
215   if (Opts.PedanticErrors)
216     Res.push_back("-pedantic-errors");
217   if (!Opts.ShowColumn)
218     Res.push_back("-fno-show-column");
219   if (!Opts.ShowLocation)
220     Res.push_back("-fno-show-source-location");
221   if (!Opts.ShowCarets)
222     Res.push_back("-fno-caret-diagnostics");
223   if (!Opts.ShowFixits)
224     Res.push_back("-fno-diagnostics-fixit-info");
225   if (Opts.ShowSourceRanges)
226     Res.push_back("-fdiagnostics-print-source-range-info");
227   if (Opts.ShowColors)
228     Res.push_back("-fcolor-diagnostics");
229   if (Opts.VerifyDiagnostics)
230     Res.push_back("-verify");
231   if (Opts.BinaryOutput)
232     Res.push_back("-fdiagnostics-binary");
233   if (Opts.ShowOptionNames)
234     Res.push_back("-fdiagnostics-show-option");
235   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
236     Res.push_back("-ftabstop");
237     Res.push_back(llvm::utostr(Opts.TabStop));
238   }
239   if (Opts.MessageLength) {
240     Res.push_back("-fmessage-length");
241     Res.push_back(llvm::utostr(Opts.MessageLength));
242   }
243   if (!Opts.DumpBuildInformation.empty()) {
244     Res.push_back("-dump-build-information");
245     Res.push_back(Opts.DumpBuildInformation);
246   }
247   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
248     Res.push_back("-W" + Opts.Warnings[i]);
249 }
250 
251 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
252   switch (Kind) {
253   case FrontendOptions::IK_None:              break;
254   case FrontendOptions::IK_AST:               return "ast";
255   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
256   case FrontendOptions::IK_C:                 return "c";
257   case FrontendOptions::IK_CXX:               return "c++";
258   case FrontendOptions::IK_ObjC:              return "objective-c";
259   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
260   case FrontendOptions::IK_OpenCL:            return "cl";
261   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
262   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
263   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
264   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
265   }
266 
267   llvm_unreachable("Unexpected language kind!");
268   return 0;
269 }
270 
271 static const char *getActionName(frontend::ActionKind Kind) {
272   switch (Kind) {
273   case frontend::PluginAction:
274   case frontend::InheritanceView:
275     llvm_unreachable("Invalid kind!");
276 
277   case frontend::ASTDump:                return "-ast-dump";
278   case frontend::ASTPrint:               return "-ast-print";
279   case frontend::ASTPrintXML:            return "-ast-print-xml";
280   case frontend::ASTView:                return "-ast-view";
281   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
282   case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
283   case frontend::DumpTokens:             return "-dump-tokens";
284   case frontend::EmitAssembly:           return "-S";
285   case frontend::EmitBC:                 return "-emit-llvm-bc";
286   case frontend::EmitHTML:               return "-emit-html";
287   case frontend::EmitLLVM:               return "-emit-llvm";
288   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
289   case frontend::EmitObj:                return "-emit-obj";
290   case frontend::FixIt:                  return "-fixit";
291   case frontend::GeneratePCH:            return "-emit-pch";
292   case frontend::GeneratePTH:            return "-emit-pth";
293   case frontend::InitOnly:               return "-init-only";
294   case frontend::ParseNoop:              return "-parse-noop";
295   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
296   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
297   case frontend::PrintDeclContext:       return "-print-decl-contexts";
298   case frontend::PrintPreprocessedInput: return "-E";
299   case frontend::RewriteMacros:          return "-rewrite-macros";
300   case frontend::RewriteObjC:            return "-rewrite-objc";
301   case frontend::RewriteTest:            return "-rewrite-test";
302   case frontend::RunAnalysis:            return "-analyze";
303   case frontend::RunPreprocessorOnly:    return "-Eonly";
304   }
305 
306   llvm_unreachable("Unexpected language kind!");
307   return 0;
308 }
309 
310 static void FrontendOptsToArgs(const FrontendOptions &Opts,
311                                std::vector<std::string> &Res) {
312   if (!Opts.DebugCodeCompletionPrinter)
313     Res.push_back("-no-code-completion-debug-printer");
314   if (Opts.DisableFree)
315     Res.push_back("-disable-free");
316   if (Opts.RelocatablePCH)
317     Res.push_back("-relocatable-pch");
318   if (Opts.ShowHelp)
319     Res.push_back("-help");
320   if (Opts.ShowMacrosInCodeCompletion)
321     Res.push_back("-code-completion-macros");
322   if (Opts.ShowStats)
323     Res.push_back("-print-stats");
324   if (Opts.ShowTimers)
325     Res.push_back("-ftime-report");
326   if (Opts.ShowVersion)
327     Res.push_back("-version");
328 
329   bool NeedLang = false;
330   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
331     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
332         Opts.Inputs[i].first)
333       NeedLang = true;
334   if (NeedLang) {
335     Res.push_back("-x");
336     Res.push_back(getInputKindName(Opts.Inputs[0].first));
337   }
338   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
339     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
340            "Unable to represent this input vector!");
341     Res.push_back(Opts.Inputs[i].second);
342   }
343 
344   if (!Opts.OutputFile.empty()) {
345     Res.push_back("-o");
346     Res.push_back(Opts.OutputFile);
347   }
348   if (!Opts.ViewClassInheritance.empty()) {
349     Res.push_back("-cxx-inheritance-view");
350     Res.push_back(Opts.ViewClassInheritance);
351   }
352   for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
353     Res.push_back("-fixit-at");
354     Res.push_back(Opts.FixItLocations[i].FileName + ":" +
355                   llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
356                   llvm::utostr(Opts.FixItLocations[i].Column));
357   }
358   if (!Opts.CodeCompletionAt.FileName.empty()) {
359     Res.push_back("-code-completion-at");
360     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
361                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
362                   llvm::utostr(Opts.CodeCompletionAt.Column));
363   }
364   if (Opts.ProgramAction != frontend::InheritanceView &&
365       Opts.ProgramAction != frontend::PluginAction)
366     Res.push_back(getActionName(Opts.ProgramAction));
367   if (!Opts.ActionName.empty()) {
368     Res.push_back("-plugin");
369     Res.push_back(Opts.ActionName);
370   }
371   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
372     Res.push_back("-load");
373     Res.push_back(Opts.Plugins[i]);
374   }
375   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
376     Res.push_back("-ast-merge");
377     Res.push_back(Opts.ASTMergeFiles[i]);
378   }
379 }
380 
381 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
382                                    std::vector<std::string> &Res) {
383   if (Opts.Sysroot != "/") {
384     Res.push_back("-isysroot");
385     Res.push_back(Opts.Sysroot);
386   }
387 
388   /// User specified include entries.
389   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
390     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
391     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
392       llvm::llvm_report_error("Invalid option set!");
393     if (E.IsUserSupplied) {
394       if (E.Group == frontend::After) {
395         Res.push_back("-idirafter");
396       } else if (E.Group == frontend::Quoted) {
397         Res.push_back("-iquote");
398       } else if (E.Group == frontend::System) {
399         Res.push_back("-isystem");
400       } else {
401         assert(E.Group == frontend::Angled && "Invalid group!");
402         Res.push_back(E.IsFramework ? "-F" : "-I");
403       }
404     } else {
405       if (E.Group != frontend::Angled && E.Group != frontend::System)
406         llvm::llvm_report_error("Invalid option set!");
407       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
408                     "-iwithprefix");
409     }
410     Res.push_back(E.Path);
411   }
412 
413   if (!Opts.EnvIncPath.empty()) {
414     // FIXME: Provide an option for this, and move env detection to driver.
415     llvm::llvm_report_error("Not yet implemented!");
416   }
417   if (!Opts.CEnvIncPath.empty()) {
418     // FIXME: Provide an option for this, and move env detection to driver.
419     llvm::llvm_report_error("Not yet implemented!");
420   }
421   if (!Opts.ObjCEnvIncPath.empty()) {
422     // FIXME: Provide an option for this, and move env detection to driver.
423     llvm::llvm_report_error("Not yet implemented!");
424   }
425   if (!Opts.CXXEnvIncPath.empty()) {
426     // FIXME: Provide an option for this, and move env detection to driver.
427     llvm::llvm_report_error("Not yet implemented!");
428   }
429   if (!Opts.ObjCXXEnvIncPath.empty()) {
430     // FIXME: Provide an option for this, and move env detection to driver.
431     llvm::llvm_report_error("Not yet implemented!");
432   }
433   if (!Opts.ResourceDir.empty()) {
434     Res.push_back("-resource-dir");
435     Res.push_back(Opts.ResourceDir);
436   }
437   if (!Opts.UseStandardIncludes)
438     Res.push_back("-nostdinc");
439   if (!Opts.UseStandardCXXIncludes)
440     Res.push_back("-nostdinc++");
441   if (Opts.Verbose)
442     Res.push_back("-v");
443 }
444 
445 static void LangOptsToArgs(const LangOptions &Opts,
446                            std::vector<std::string> &Res) {
447   LangOptions DefaultLangOpts;
448 
449   // FIXME: Need to set -std to get all the implicit options.
450 
451   // FIXME: We want to only pass options relative to the defaults, which
452   // requires constructing a target. :(
453   //
454   // It would be better to push the all target specific choices into the driver,
455   // so that everything below that was more uniform.
456 
457   if (Opts.Trigraphs)
458     Res.push_back("-trigraphs");
459   // Implicit based on the input kind:
460   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
461   // Implicit based on the input language standard:
462   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
463   if (Opts.DollarIdents)
464     Res.push_back("-fdollars-in-identifiers");
465   if (Opts.Microsoft)
466     Res.push_back("-fms-extensions");
467   if (Opts.ObjCNonFragileABI)
468     Res.push_back("-fobjc-nonfragile-abi");
469   if (Opts.ObjCNonFragileABI2)
470     Res.push_back("-fobjc-nonfragile-abi2");
471   // NoInline is implicit.
472   if (!Opts.CXXOperatorNames)
473     Res.push_back("-fno-operator-names");
474   if (Opts.PascalStrings)
475     Res.push_back("-fpascal-strings");
476   if (Opts.CatchUndefined)
477     Res.push_back("-fcatch-undefined-behavior");
478   if (Opts.WritableStrings)
479     Res.push_back("-fwritable-strings");
480   if (Opts.ConstStrings)
481     Res.push_back("-Wwrite-strings");
482   if (!Opts.LaxVectorConversions)
483     Res.push_back("-fno-lax-vector-conversions");
484   if (Opts.AltiVec)
485     Res.push_back("-faltivec");
486   if (Opts.Exceptions)
487     Res.push_back("-fexceptions");
488   if (Opts.SjLjExceptions)
489     Res.push_back("-fsjlj-exceptions");
490   if (!Opts.RTTI)
491     Res.push_back("-fno-rtti");
492   if (!Opts.NeXTRuntime)
493     Res.push_back("-fgnu-runtime");
494   if (Opts.Freestanding)
495     Res.push_back("-ffreestanding");
496   if (Opts.NoBuiltin)
497     Res.push_back("-fno-builtin");
498   if (!Opts.AssumeSaneOperatorNew)
499     Res.push_back("-fno-assume-sane-operator-new");
500   if (!Opts.ThreadsafeStatics)
501     Res.push_back("-fno-threadsafe-statics");
502   if (Opts.POSIXThreads)
503     Res.push_back("-pthread");
504   if (Opts.Blocks)
505     Res.push_back("-fblocks");
506   if (Opts.EmitAllDecls)
507     Res.push_back("-femit-all-decls");
508   if (Opts.MathErrno)
509     Res.push_back("-fmath-errno");
510   if (Opts.OverflowChecking)
511     Res.push_back("-ftrapv");
512   if (Opts.HeinousExtensions)
513     Res.push_back("-fheinous-gnu-extensions");
514   // Optimize is implicit.
515   // OptimizeSize is implicit.
516   if (Opts.Static)
517     Res.push_back("-static-define");
518   if (Opts.PICLevel) {
519     Res.push_back("-pic-level");
520     Res.push_back(llvm::utostr(Opts.PICLevel));
521   }
522   if (Opts.ObjCGCBitmapPrint)
523     Res.push_back("-print-ivar-layout");
524   // FIXME: Don't forget to update when the default changes!
525   if (Opts.AccessControl)
526     Res.push_back("-faccess-control");
527   if (!Opts.CharIsSigned)
528     Res.push_back("-fno-signed-char");
529   if (Opts.ShortWChar)
530     Res.push_back("-fshort-wchar");
531   if (!Opts.ElideConstructors)
532     Res.push_back("-fno-elide-constructors");
533   if (Opts.getGCMode() != LangOptions::NonGC) {
534     if (Opts.getGCMode() == LangOptions::HybridGC) {
535       Res.push_back("-fobjc-gc");
536     } else {
537       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
538       Res.push_back("-fobjc-gc-only");
539     }
540   }
541   if (Opts.getVisibilityMode() != LangOptions::Default) {
542     Res.push_back("-fvisibility");
543     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
544       Res.push_back("hidden");
545     } else {
546       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
547              "Invalid visibility!");
548       Res.push_back("protected");
549     }
550   }
551   if (Opts.getStackProtectorMode() != 0) {
552     Res.push_back("-stack-protector");
553     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
554   }
555   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
556     Res.push_back("-ftemplate-depth");
557     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
558   }
559   if (!Opts.ObjCConstantStringClass.empty()) {
560     Res.push_back("-fconstant-string-class");
561     Res.push_back(Opts.ObjCConstantStringClass);
562   }
563 }
564 
565 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
566                                    std::vector<std::string> &Res) {
567   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
568     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
569                   Opts.Macros[i].first);
570   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
571     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
572     Res.push_back("-include");
573     Res.push_back(Opts.Includes[i]);
574   }
575   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
576     Res.push_back("-imacros");
577     Res.push_back(Opts.MacroIncludes[i]);
578   }
579   if (!Opts.UsePredefines)
580     Res.push_back("-undef");
581   if (Opts.DetailedRecord)
582     Res.push_back("-detailed-preprocessing-record");
583   if (!Opts.ImplicitPCHInclude.empty()) {
584     Res.push_back("-include-pch");
585     Res.push_back(Opts.ImplicitPCHInclude);
586   }
587   if (!Opts.ImplicitPTHInclude.empty()) {
588     Res.push_back("-include-pth");
589     Res.push_back(Opts.ImplicitPTHInclude);
590   }
591   if (!Opts.TokenCache.empty()) {
592     if (Opts.ImplicitPTHInclude.empty()) {
593       Res.push_back("-token-cache");
594       Res.push_back(Opts.TokenCache);
595     } else
596       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
597              "Unsupported option combination!");
598   }
599   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
600     Res.push_back("-remap-file");
601     Res.push_back(Opts.RemappedFiles[i].first + ";" +
602                   Opts.RemappedFiles[i].second);
603   }
604 }
605 
606 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
607                                          std::vector<std::string> &Res) {
608   if (!Opts.ShowCPP && !Opts.ShowMacros)
609     llvm::llvm_report_error("Invalid option combination!");
610 
611   if (Opts.ShowCPP && Opts.ShowMacros)
612     Res.push_back("-dD");
613   else if (!Opts.ShowCPP && Opts.ShowMacros)
614     Res.push_back("-dM");
615 
616   if (!Opts.ShowLineMarkers)
617     Res.push_back("-P");
618   if (Opts.ShowComments)
619     Res.push_back("-C");
620   if (Opts.ShowMacroComments)
621     Res.push_back("-CC");
622 }
623 
624 static void TargetOptsToArgs(const TargetOptions &Opts,
625                              std::vector<std::string> &Res) {
626   Res.push_back("-triple");
627   Res.push_back(Opts.Triple);
628   if (!Opts.CPU.empty()) {
629     Res.push_back("-target-cpu");
630     Res.push_back(Opts.CPU);
631   }
632   if (!Opts.ABI.empty()) {
633     Res.push_back("-target-abi");
634     Res.push_back(Opts.ABI);
635   }
636   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
637     Res.push_back("-target-feature");
638     Res.push_back(Opts.Features[i]);
639   }
640 }
641 
642 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
643   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
644   CodeGenOptsToArgs(getCodeGenOpts(), Res);
645   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
646   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
647   FrontendOptsToArgs(getFrontendOpts(), Res);
648   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
649   LangOptsToArgs(getLangOpts(), Res);
650   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
651   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
652   TargetOptsToArgs(getTargetOpts(), Res);
653 }
654 
655 //===----------------------------------------------------------------------===//
656 // Deserialization (to args)
657 //===----------------------------------------------------------------------===//
658 
659 using namespace clang::driver;
660 using namespace clang::driver::cc1options;
661 
662 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
663                                        llvm::StringRef Default = "") {
664   if (Arg *A = Args.getLastArg(ID))
665     return A->getValue(Args);
666   return Default;
667 }
668 
669 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
670                               int Default, Diagnostic &Diags) {
671   Arg *A = Args.getLastArg(ID);
672   if (!A)
673     return Default;
674 
675   int Res = Default;
676   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
677     Diags.Report(diag::err_drv_invalid_int_value)
678         << A->getAsString(Args) << A->getValue(Args);
679 
680   return Res;
681 }
682 
683 static std::vector<std::string>
684 getAllArgValues(ArgList &Args, cc1options::ID ID) {
685   llvm::SmallVector<const char *, 16> Values;
686   Args.AddAllArgValues(Values, ID);
687   return std::vector<std::string>(Values.begin(), Values.end());
688 }
689 
690 //
691 
692 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
693                               Diagnostic &Diags) {
694   using namespace cc1options;
695 
696   Opts.AnalysisList.clear();
697 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
698   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
699 #include "clang/Frontend/Analyses.def"
700 
701   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
702     llvm::StringRef Name = A->getValue(Args);
703     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
704 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
705       .Case(CMDFLAG, NAME##Model)
706 #include "clang/Frontend/Analyses.def"
707       .Default(NumStores);
708     // FIXME: Error handling.
709     if (Value == NumStores)
710       Diags.Report(diag::err_drv_invalid_value)
711         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
712     else
713       Opts.AnalysisStoreOpt = Value;
714   }
715 
716   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
717     llvm::StringRef Name = A->getValue(Args);
718     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
719 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
720       .Case(CMDFLAG, NAME##Model)
721 #include "clang/Frontend/Analyses.def"
722       .Default(NumConstraints);
723     // FIXME: Error handling.
724     if (Value == NumConstraints)
725       Diags.Report(diag::err_drv_invalid_value)
726         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
727     else
728       Opts.AnalysisConstraintsOpt = Value;
729   }
730 
731   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
732     llvm::StringRef Name = A->getValue(Args);
733     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
734 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
735       .Case(CMDFLAG, PD_##NAME)
736 #include "clang/Frontend/Analyses.def"
737       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
738     // FIXME: Error handling.
739     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
740       Diags.Report(diag::err_drv_invalid_value)
741         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
742     else
743       Opts.AnalysisDiagOpt = Value;
744   }
745 
746   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
747   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
748   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
749   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
750   Opts.AnalyzeNestedBlocks =
751     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
752   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
753   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
754   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
755   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
756   Opts.EnableExperimentalInternalChecks =
757     Args.hasArg(OPT_analyzer_experimental_internal_checks);
758   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
759 }
760 
761 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
762                              Diagnostic &Diags) {
763   using namespace cc1options;
764   // -Os implies -O2
765   if (Args.hasArg(OPT_Os))
766     Opts.OptimizationLevel = 2;
767   else {
768     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
769     if (Opts.OptimizationLevel > 3) {
770       Diags.Report(diag::err_drv_invalid_value)
771         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
772       Opts.OptimizationLevel = 3;
773     }
774   }
775 
776   // We must always run at least the always inlining pass.
777   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
778     : CodeGenOptions::OnlyAlwaysInlining;
779 
780   Opts.DebugInfo = Args.hasArg(OPT_g);
781   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
782   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
783   Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
784   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
785   Opts.NoCommon = Args.hasArg(OPT_fno_common);
786   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
787   Opts.OptimizeSize = Args.hasArg(OPT_Os);
788   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
789 
790   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
791   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
792   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
793   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
794   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
795   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
796   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
797   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
798   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
799   Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
800   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
801   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
802   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
803 
804   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
805   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
806 }
807 
808 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
809                                       ArgList &Args) {
810   using namespace cc1options;
811   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
812   Opts.Targets = getAllArgValues(Args, OPT_MT);
813   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
814   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
815 }
816 
817 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
818                                 Diagnostic &Diags) {
819   using namespace cc1options;
820   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
821   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
822   Opts.Pedantic = Args.hasArg(OPT_pedantic);
823   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
824   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
825   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
826   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
827   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
828   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
829   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
830   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
831   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
832   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
833   Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
834                                     DiagnosticOptions::DefaultTabStop, Diags);
835   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
836     Diags.Report(diag::warn_ignoring_ftabstop_value)
837       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
838     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
839   }
840   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
841   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
842   Opts.Warnings = getAllArgValues(Args, OPT_W);
843 }
844 
845 static FrontendOptions::InputKind
846 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
847   using namespace cc1options;
848   Opts.ProgramAction = frontend::ParseSyntaxOnly;
849   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
850     switch (A->getOption().getID()) {
851     default:
852       assert(0 && "Invalid option in group!");
853     case OPT_ast_dump:
854       Opts.ProgramAction = frontend::ASTDump; break;
855     case OPT_ast_print:
856       Opts.ProgramAction = frontend::ASTPrint; break;
857     case OPT_ast_print_xml:
858       Opts.ProgramAction = frontend::ASTPrintXML; break;
859     case OPT_ast_view:
860       Opts.ProgramAction = frontend::ASTView; break;
861     case OPT_dump_raw_tokens:
862       Opts.ProgramAction = frontend::DumpRawTokens; break;
863     case OPT_dump_record_layouts:
864       Opts.ProgramAction = frontend::DumpRecordLayouts; break;
865     case OPT_dump_tokens:
866       Opts.ProgramAction = frontend::DumpTokens; break;
867     case OPT_S:
868       Opts.ProgramAction = frontend::EmitAssembly; break;
869     case OPT_emit_llvm_bc:
870       Opts.ProgramAction = frontend::EmitBC; break;
871     case OPT_emit_html:
872       Opts.ProgramAction = frontend::EmitHTML; break;
873     case OPT_emit_llvm:
874       Opts.ProgramAction = frontend::EmitLLVM; break;
875     case OPT_emit_llvm_only:
876       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
877     case OPT_emit_obj:
878       Opts.ProgramAction = frontend::EmitObj; break;
879     case OPT_fixit:
880       Opts.ProgramAction = frontend::FixIt; break;
881     case OPT_emit_pch:
882       Opts.ProgramAction = frontend::GeneratePCH; break;
883     case OPT_emit_pth:
884       Opts.ProgramAction = frontend::GeneratePTH; break;
885     case OPT_init_only:
886       Opts.ProgramAction = frontend::InitOnly; break;
887     case OPT_parse_noop:
888       Opts.ProgramAction = frontend::ParseNoop; break;
889     case OPT_parse_print_callbacks:
890       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
891     case OPT_fsyntax_only:
892       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
893     case OPT_print_decl_contexts:
894       Opts.ProgramAction = frontend::PrintDeclContext; break;
895     case OPT_E:
896       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
897     case OPT_rewrite_macros:
898       Opts.ProgramAction = frontend::RewriteMacros; break;
899     case OPT_rewrite_objc:
900       Opts.ProgramAction = frontend::RewriteObjC; break;
901     case OPT_rewrite_test:
902       Opts.ProgramAction = frontend::RewriteTest; break;
903     case OPT_analyze:
904       Opts.ProgramAction = frontend::RunAnalysis; break;
905     case OPT_Eonly:
906       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
907     }
908   }
909   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
910     Opts.ProgramAction = frontend::PluginAction;
911     Opts.ActionName = A->getValue(Args);
912   }
913 
914   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
915     Opts.CodeCompletionAt =
916       ParsedSourceLocation::FromString(A->getValue(Args));
917     if (Opts.CodeCompletionAt.FileName.empty())
918       Diags.Report(diag::err_drv_invalid_value)
919         << A->getAsString(Args) << A->getValue(Args);
920   }
921   Opts.DebugCodeCompletionPrinter =
922     !Args.hasArg(OPT_no_code_completion_debug_printer);
923   Opts.DisableFree = Args.hasArg(OPT_disable_free);
924 
925   Opts.FixItLocations.clear();
926   for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
927          ie = Args.filtered_end(); it != ie; ++it) {
928     const char *Loc = it->getValue(Args);
929     ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
930 
931     if (PSL.FileName.empty()) {
932       Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
933       continue;
934     }
935 
936     Opts.FixItLocations.push_back(PSL);
937   }
938 
939   Opts.OutputFile = getLastArgValue(Args, OPT_o);
940   Opts.Plugins = getAllArgValues(Args, OPT_load);
941   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
942   Opts.ShowHelp = Args.hasArg(OPT_help);
943   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
944   Opts.ShowStats = Args.hasArg(OPT_print_stats);
945   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
946   Opts.ShowVersion = Args.hasArg(OPT_version);
947   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
948   Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
949 
950   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
951   if (const Arg *A = Args.getLastArg(OPT_x)) {
952     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
953       .Case("c", FrontendOptions::IK_C)
954       .Case("cl", FrontendOptions::IK_OpenCL)
955       .Case("c", FrontendOptions::IK_C)
956       .Case("cl", FrontendOptions::IK_OpenCL)
957       .Case("c++", FrontendOptions::IK_CXX)
958       .Case("objective-c", FrontendOptions::IK_ObjC)
959       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
960       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
961       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
962       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
963       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
964       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
965       .Case("c-header", FrontendOptions::IK_C)
966       .Case("objective-c-header", FrontendOptions::IK_ObjC)
967       .Case("c++-header", FrontendOptions::IK_CXX)
968       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
969       .Case("ast", FrontendOptions::IK_AST)
970       .Default(FrontendOptions::IK_None);
971     if (DashX == FrontendOptions::IK_None)
972       Diags.Report(diag::err_drv_invalid_value)
973         << A->getAsString(Args) << A->getValue(Args);
974   }
975 
976   // '-' is the default input if none is given.
977   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
978   Opts.Inputs.clear();
979   if (Inputs.empty())
980     Inputs.push_back("-");
981   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
982     FrontendOptions::InputKind IK = DashX;
983     if (IK == FrontendOptions::IK_None) {
984       IK = FrontendOptions::getInputKindForExtension(
985         llvm::StringRef(Inputs[i]).rsplit('.').second);
986       // FIXME: Remove this hack.
987       if (i == 0)
988         DashX = IK;
989     }
990     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
991   }
992 
993   return DashX;
994 }
995 
996 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
997                                                  void *MainAddr) {
998   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
999 
1000   if (!P.isEmpty()) {
1001     P.eraseComponent();  // Remove /clang from foo/bin/clang
1002     P.eraseComponent();  // Remove /bin   from foo/bin
1003 
1004     // Get foo/lib/clang/<version>/include
1005     P.appendComponent("lib");
1006     P.appendComponent("clang");
1007     P.appendComponent(CLANG_VERSION_STRING);
1008   }
1009 
1010   return P.str();
1011 }
1012 
1013 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1014   using namespace cc1options;
1015   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1016   Opts.Verbose = Args.hasArg(OPT_v);
1017   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1018   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1019   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1020   Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1021 
1022   // Add -I... and -F... options in order.
1023   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1024          ie = Args.filtered_end(); it != ie; ++it)
1025     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1026                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1027 
1028   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1029   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1030   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1031                                              OPT_iwithprefixbefore),
1032          ie = Args.filtered_end(); it != ie; ++it) {
1033     if (it->getOption().matches(OPT_iprefix))
1034       Prefix = it->getValue(Args);
1035     else if (it->getOption().matches(OPT_iwithprefix))
1036       Opts.AddPath(Prefix.str() + it->getValue(Args),
1037                    frontend::System, false, false);
1038     else
1039       Opts.AddPath(Prefix.str() + it->getValue(Args),
1040                    frontend::Angled, false, false);
1041   }
1042 
1043   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1044          ie = Args.filtered_end(); it != ie; ++it)
1045     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1046   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1047          ie = Args.filtered_end(); it != ie; ++it)
1048     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1049   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1050          ie = Args.filtered_end(); it != ie; ++it)
1051     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1052 
1053   // FIXME: Need options for the various environment variables!
1054 }
1055 
1056 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1057                           FrontendOptions::InputKind IK,
1058                           Diagnostic &Diags) {
1059   // FIXME: Cleanup per-file based stuff.
1060 
1061   // Set some properties which depend soley on the input kind; it would be nice
1062   // to move these to the language standard, and have the driver resolve the
1063   // input kind + language standard.
1064   if (IK == FrontendOptions::IK_Asm) {
1065     Opts.AsmPreprocessor = 1;
1066   } else if (IK == FrontendOptions::IK_ObjC ||
1067              IK == FrontendOptions::IK_ObjCXX ||
1068              IK == FrontendOptions::IK_PreprocessedObjC ||
1069              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1070     Opts.ObjC1 = Opts.ObjC2 = 1;
1071   }
1072 
1073   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1074   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1075     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1076 #define LANGSTANDARD(id, name, desc, features) \
1077       .Case(name, LangStandard::lang_##id)
1078 #include "clang/Frontend/LangStandards.def"
1079       .Default(LangStandard::lang_unspecified);
1080     if (LangStd == LangStandard::lang_unspecified)
1081       Diags.Report(diag::err_drv_invalid_value)
1082         << A->getAsString(Args) << A->getValue(Args);
1083   }
1084 
1085   if (LangStd == LangStandard::lang_unspecified) {
1086     // Based on the base language, pick one.
1087     switch (IK) {
1088     case FrontendOptions::IK_None:
1089     case FrontendOptions::IK_AST:
1090       assert(0 && "Invalid input kind!");
1091     case FrontendOptions::IK_OpenCL:
1092       LangStd = LangStandard::lang_opencl;
1093       break;
1094     case FrontendOptions::IK_Asm:
1095     case FrontendOptions::IK_C:
1096     case FrontendOptions::IK_PreprocessedC:
1097     case FrontendOptions::IK_ObjC:
1098     case FrontendOptions::IK_PreprocessedObjC:
1099       LangStd = LangStandard::lang_gnu99;
1100       break;
1101     case FrontendOptions::IK_CXX:
1102     case FrontendOptions::IK_PreprocessedCXX:
1103     case FrontendOptions::IK_ObjCXX:
1104     case FrontendOptions::IK_PreprocessedObjCXX:
1105       LangStd = LangStandard::lang_gnucxx98;
1106       break;
1107     }
1108   }
1109 
1110   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1111   Opts.BCPLComment = Std.hasBCPLComments();
1112   Opts.C99 = Std.isC99();
1113   Opts.CPlusPlus = Std.isCPlusPlus();
1114   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1115   Opts.Digraphs = Std.hasDigraphs();
1116   Opts.GNUMode = Std.isGNUMode();
1117   Opts.GNUInline = !Std.isC99();
1118   Opts.HexFloats = Std.hasHexFloats();
1119   Opts.ImplicitInt = Std.hasImplicitInt();
1120 
1121   // OpenCL has some additional defaults.
1122   if (LangStd == LangStandard::lang_opencl) {
1123     Opts.OpenCL = 1;
1124     Opts.AltiVec = 1;
1125     Opts.CXXOperatorNames = 1;
1126     Opts.LaxVectorConversions = 1;
1127   }
1128 
1129   // OpenCL and C++ both have bool, true, false keywords.
1130   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1131 
1132   if (Opts.CPlusPlus)
1133     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1134 
1135   if (Args.hasArg(OPT_fobjc_gc_only))
1136     Opts.setGCMode(LangOptions::GCOnly);
1137   else if (Args.hasArg(OPT_fobjc_gc))
1138     Opts.setGCMode(LangOptions::HybridGC);
1139 
1140   if (Args.hasArg(OPT_print_ivar_layout))
1141     Opts.ObjCGCBitmapPrint = 1;
1142 
1143   if (Args.hasArg(OPT_faltivec))
1144     Opts.AltiVec = 1;
1145 
1146   if (Args.hasArg(OPT_pthread))
1147     Opts.POSIXThreads = 1;
1148 
1149   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1150                                         "default");
1151   if (Vis == "default")
1152     Opts.setVisibilityMode(LangOptions::Default);
1153   else if (Vis == "hidden")
1154     Opts.setVisibilityMode(LangOptions::Hidden);
1155   else if (Vis == "protected")
1156     Opts.setVisibilityMode(LangOptions::Protected);
1157   else
1158     Diags.Report(diag::err_drv_invalid_value)
1159       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1160 
1161   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1162 
1163   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1164   // is specified, or -std is set to a conforming mode.
1165   Opts.Trigraphs = !Opts.GNUMode;
1166   if (Args.hasArg(OPT_trigraphs))
1167     Opts.Trigraphs = 1;
1168 
1169   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1170                                    OPT_fno_dollars_in_identifiers,
1171                                    !Opts.AsmPreprocessor);
1172   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1173   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1174   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1175   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1176   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1177     Opts.LaxVectorConversions = 0;
1178   if (Args.hasArg(OPT_fno_threadsafe_statics))
1179     Opts.ThreadsafeStatics = 0;
1180   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1181   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1182   Opts.Blocks = Args.hasArg(OPT_fblocks);
1183   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1184   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1185   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1186   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1187   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1188   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1189   Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1190   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1191   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1192   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1193                                                Diags);
1194   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1195   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1196                                                  OPT_fconstant_string_class);
1197   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1198   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1199   if (Opts.ObjCNonFragileABI2)
1200     Opts.ObjCNonFragileABI = true;
1201   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1202   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1203   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1204   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1205   Opts.Static = Args.hasArg(OPT_static_define);
1206   Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1207   Opts.OptimizeSize = 0;
1208 
1209   // FIXME: Eliminate this dependency.
1210   unsigned Opt =
1211     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1212   Opts.Optimize = Opt != 0;
1213 
1214   // This is the __NO_INLINE__ define, which just depends on things like the
1215   // optimization level and -fno-inline, not actually whether the backend has
1216   // inlining enabled.
1217   //
1218   // FIXME: This is affected by other options (-fno-inline).
1219   Opts.NoInline = !Opt;
1220 
1221   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1222   switch (SSP) {
1223   default:
1224     Diags.Report(diag::err_drv_invalid_value)
1225       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1226     break;
1227   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1228   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1229   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1230   }
1231 }
1232 
1233 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1234                                   Diagnostic &Diags) {
1235   using namespace cc1options;
1236   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1237   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1238   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1239       Opts.TokenCache = A->getValue(Args);
1240   else
1241     Opts.TokenCache = Opts.ImplicitPTHInclude;
1242   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1243   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1244   // Add macros from the command line.
1245   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1246          ie = Args.filtered_end(); it != ie; ++it) {
1247     if (it->getOption().matches(OPT_D))
1248       Opts.addMacroDef(it->getValue(Args));
1249     else
1250       Opts.addMacroUndef(it->getValue(Args));
1251   }
1252 
1253   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1254 
1255   // Add the ordered list of -includes.
1256   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1257                                              OPT_include_pth),
1258          ie = Args.filtered_end(); it != ie; ++it) {
1259     // PCH is handled specially, we need to extra the original include path.
1260     if (it->getOption().matches(OPT_include_pch)) {
1261       std::string OriginalFile =
1262         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1263       if (OriginalFile.empty())
1264         continue;
1265 
1266       Opts.Includes.push_back(OriginalFile);
1267     } else
1268       Opts.Includes.push_back(it->getValue(Args));
1269   }
1270 
1271   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1272          ie = Args.filtered_end(); it != ie; ++it) {
1273     std::pair<llvm::StringRef,llvm::StringRef> Split =
1274       llvm::StringRef(it->getValue(Args)).split(';');
1275 
1276     if (Split.second.empty()) {
1277       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1278       continue;
1279     }
1280 
1281     Opts.addRemappedFile(Split.first, Split.second);
1282   }
1283 }
1284 
1285 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1286                                         ArgList &Args) {
1287   using namespace cc1options;
1288   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1289   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1290   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1291   Opts.ShowComments = Args.hasArg(OPT_C);
1292   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1293 }
1294 
1295 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1296   using namespace cc1options;
1297   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1298   Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1299   Opts.Triple = getLastArgValue(Args, OPT_triple);
1300   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1301 
1302   // Use the host triple if unspecified.
1303   if (Opts.Triple.empty())
1304     Opts.Triple = llvm::sys::getHostTriple();
1305 }
1306 
1307 //
1308 
1309 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1310                                         const char **ArgBegin,
1311                                         const char **ArgEnd,
1312                                         Diagnostic &Diags) {
1313   // Parse the arguments.
1314   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1315   unsigned MissingArgIndex, MissingArgCount;
1316   llvm::OwningPtr<InputArgList> Args(
1317     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1318 
1319   // Check for missing argument error.
1320   if (MissingArgCount)
1321     Diags.Report(diag::err_drv_missing_argument)
1322       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1323 
1324   // Issue errors on unknown arguments.
1325   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1326          ie = Args->filtered_end(); it != ie; ++it)
1327     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1328 
1329   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1330   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1331   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1332   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1333   FrontendOptions::InputKind DashX =
1334     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1335   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1336   if (DashX != FrontendOptions::IK_AST)
1337     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1338   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1339   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1340   ParseTargetArgs(Res.getTargetOpts(), *Args);
1341 }
1342