xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision d70fb9812adbfa133be0c4348faa014c4f53f1c5)
1 //===--- CompilerInvocation.cpp -------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "clang/Basic/Diagnostic.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Basic/FileManager.h"
14 #include "clang/Driver/Arg.h"
15 #include "clang/Driver/ArgList.h"
16 #include "clang/Driver/CC1Options.h"
17 #include "clang/Driver/DriverDiagnostic.h"
18 #include "clang/Driver/OptTable.h"
19 #include "clang/Driver/Option.h"
20 #include "clang/Frontend/CompilerInvocation.h"
21 #include "clang/Frontend/LangStandard.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "llvm/ADT/OwningPtr.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/ADT/StringSwitch.h"
27 #include "llvm/ADT/Triple.h"
28 #include "llvm/Support/ErrorHandling.h"
29 #include "llvm/Support/Host.h"
30 #include "llvm/Support/Path.h"
31 using namespace clang;
32 
33 static const char *getAnalysisStoreName(AnalysisStores Kind) {
34   switch (Kind) {
35   default:
36     llvm_unreachable("Unknown analysis store!");
37 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
38   case NAME##Model: return CMDFLAG;
39 #include "clang/Frontend/Analyses.def"
40   }
41 }
42 
43 static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
44   switch (Kind) {
45   default:
46     llvm_unreachable("Unknown analysis constraints!");
47 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
48   case NAME##Model: return CMDFLAG;
49 #include "clang/Frontend/Analyses.def"
50   }
51 }
52 
53 static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
54   switch (Kind) {
55   default:
56     llvm_unreachable("Unknown analysis client!");
57 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
58   case PD_##NAME: return CMDFLAG;
59 #include "clang/Frontend/Analyses.def"
60   }
61 }
62 
63 //===----------------------------------------------------------------------===//
64 // Serialization (to args)
65 //===----------------------------------------------------------------------===//
66 
67 static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
68                                std::vector<std::string> &Res) {
69   if (Opts.ShowCheckerHelp)
70     Res.push_back("-analyzer-checker-help");
71   if (Opts.AnalysisStoreOpt != BasicStoreModel) {
72     Res.push_back("-analyzer-store");
73     Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
74   }
75   if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
76     Res.push_back("-analyzer-constraints");
77     Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
78   }
79   if (Opts.AnalysisDiagOpt != PD_HTML) {
80     Res.push_back("-analyzer-output");
81     Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
82   }
83   if (!Opts.AnalyzeSpecificFunction.empty()) {
84     Res.push_back("-analyze-function");
85     Res.push_back(Opts.AnalyzeSpecificFunction);
86   }
87   if (Opts.AnalyzeAll)
88     Res.push_back("-analyzer-opt-analyze-headers");
89   if (Opts.AnalyzerDisplayProgress)
90     Res.push_back("-analyzer-display-progress");
91   if (Opts.AnalyzeNestedBlocks)
92     Res.push_back("-analyzer-opt-analyze-nested-blocks");
93   if (Opts.EagerlyAssume)
94     Res.push_back("-analyzer-eagerly-assume");
95   if (!Opts.PurgeDead)
96     Res.push_back("-analyzer-no-purge-dead");
97   if (Opts.TrimGraph)
98     Res.push_back("-trim-egraph");
99   if (Opts.VisualizeEGDot)
100     Res.push_back("-analyzer-viz-egraph-graphviz");
101   if (Opts.VisualizeEGUbi)
102     Res.push_back("-analyzer-viz-egraph-ubigraph");
103 
104   for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
105     const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
106     if (opt.second)
107       Res.push_back("-analyzer-disable-checker");
108     else
109       Res.push_back("-analyzer-checker");
110     Res.push_back(opt.first);
111   }
112 }
113 
114 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
115                               std::vector<std::string> &Res) {
116   if (Opts.DebugInfo)
117     Res.push_back("-g");
118   if (Opts.DisableLLVMOpts)
119     Res.push_back("-disable-llvm-optzns");
120   if (Opts.DisableRedZone)
121     Res.push_back("-disable-red-zone");
122   if (!Opts.DwarfDebugFlags.empty()) {
123     Res.push_back("-dwarf-debug-flags");
124     Res.push_back(Opts.DwarfDebugFlags);
125   }
126   if (Opts.EmitGcovArcs)
127     Res.push_back("-femit-coverage-data");
128   if (Opts.EmitGcovNotes)
129     Res.push_back("-femit-coverage-notes");
130   if (!Opts.MergeAllConstants)
131     Res.push_back("-fno-merge-all-constants");
132   if (Opts.NoCommon)
133     Res.push_back("-fno-common");
134   if (Opts.ForbidGuardVariables)
135     Res.push_back("-fforbid-guard-variables");
136   if (Opts.NoImplicitFloat)
137     Res.push_back("-no-implicit-float");
138   if (Opts.OmitLeafFramePointer)
139     Res.push_back("-momit-leaf-frame-pointer");
140   if (Opts.OptimizeSize) {
141     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
142     Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
143   } else if (Opts.OptimizationLevel != 0)
144     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
145   if (!Opts.MainFileName.empty()) {
146     Res.push_back("-main-file-name");
147     Res.push_back(Opts.MainFileName);
148   }
149   // SimplifyLibCalls is only derived.
150   // TimePasses is only derived.
151   // UnitAtATime is unused.
152   // Inlining is only derived.
153 
154   // UnrollLoops is derived, but also accepts an option, no
155   // harm in pushing it back here.
156   if (Opts.UnrollLoops)
157     Res.push_back("-funroll-loops");
158   if (Opts.DataSections)
159     Res.push_back("-fdata-sections");
160   if (Opts.FunctionSections)
161     Res.push_back("-ffunction-sections");
162   if (Opts.AsmVerbose)
163     Res.push_back("-masm-verbose");
164   if (!Opts.CodeModel.empty()) {
165     Res.push_back("-mcode-model");
166     Res.push_back(Opts.CodeModel);
167   }
168   if (!Opts.CXAAtExit)
169     Res.push_back("-fno-use-cxa-atexit");
170   if (Opts.CXXCtorDtorAliases)
171     Res.push_back("-mconstructor-aliases");
172   if (Opts.ObjCAutoRefCountExceptions)
173     Res.push_back("-fobjc-arc-eh");
174   if (!Opts.DebugPass.empty()) {
175     Res.push_back("-mdebug-pass");
176     Res.push_back(Opts.DebugPass);
177   }
178   if (Opts.DisableFPElim)
179     Res.push_back("-mdisable-fp-elim");
180   if (!Opts.FloatABI.empty()) {
181     Res.push_back("-mfloat-abi");
182     Res.push_back(Opts.FloatABI);
183   }
184   if (!Opts.LimitFloatPrecision.empty()) {
185     Res.push_back("-mlimit-float-precision");
186     Res.push_back(Opts.LimitFloatPrecision);
187   }
188   if (Opts.NoZeroInitializedInBSS)
189     Res.push_back("-mno-zero-initialized-bss");
190   switch (Opts.getObjCDispatchMethod()) {
191   case CodeGenOptions::Legacy:
192     break;
193   case CodeGenOptions::Mixed:
194     Res.push_back("-fobjc-dispatch-method=mixed");
195     break;
196   case CodeGenOptions::NonLegacy:
197     Res.push_back("-fobjc-dispatch-method=non-legacy");
198     break;
199   }
200   if (Opts.NumRegisterParameters) {
201     Res.push_back("-mregparm");
202     Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
203   }
204   if (Opts.RelaxAll)
205     Res.push_back("-mrelax-all");
206   if (Opts.SaveTempLabels)
207     Res.push_back("-msave-temp-labels");
208   if (Opts.NoDwarf2CFIAsm)
209     Res.push_back("-fno-dwarf2-cfi-asm");
210   if (Opts.SoftFloat)
211     Res.push_back("-msoft-float");
212   if (Opts.UnwindTables)
213     Res.push_back("-munwind-tables");
214   if (Opts.RelocationModel != "pic") {
215     Res.push_back("-mrelocation-model");
216     Res.push_back(Opts.RelocationModel);
217   }
218   if (!Opts.VerifyModule)
219     Res.push_back("-disable-llvm-verifier");
220   for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i) {
221     Res.push_back("-backend-option");
222     Res.push_back(Opts.BackendOptions[i]);
223   }
224 }
225 
226 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
227                                        std::vector<std::string> &Res) {
228   if (Opts.IncludeSystemHeaders)
229     Res.push_back("-sys-header-deps");
230   if (Opts.ShowHeaderIncludes)
231     Res.push_back("-H");
232   if (!Opts.HeaderIncludeOutputFile.empty()) {
233     Res.push_back("-header-include-file");
234     Res.push_back(Opts.HeaderIncludeOutputFile);
235   }
236   if (Opts.UsePhonyTargets)
237     Res.push_back("-MP");
238   if (!Opts.OutputFile.empty()) {
239     Res.push_back("-dependency-file");
240     Res.push_back(Opts.OutputFile);
241   }
242   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
243     Res.push_back("-MT");
244     Res.push_back(Opts.Targets[i]);
245   }
246 }
247 
248 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
249                                  std::vector<std::string> &Res) {
250   if (Opts.IgnoreWarnings)
251     Res.push_back("-w");
252   if (Opts.NoRewriteMacros)
253     Res.push_back("-Wno-rewrite-macros");
254   if (Opts.Pedantic)
255     Res.push_back("-pedantic");
256   if (Opts.PedanticErrors)
257     Res.push_back("-pedantic-errors");
258   if (!Opts.ShowColumn)
259     Res.push_back("-fno-show-column");
260   if (!Opts.ShowLocation)
261     Res.push_back("-fno-show-source-location");
262   if (!Opts.ShowCarets)
263     Res.push_back("-fno-caret-diagnostics");
264   if (!Opts.ShowFixits)
265     Res.push_back("-fno-diagnostics-fixit-info");
266   if (Opts.ShowSourceRanges)
267     Res.push_back("-fdiagnostics-print-source-range-info");
268   if (Opts.ShowParseableFixits)
269     Res.push_back("-fdiagnostics-parseable-fixits");
270   if (Opts.ShowColors)
271     Res.push_back("-fcolor-diagnostics");
272   if (Opts.VerifyDiagnostics)
273     Res.push_back("-verify");
274   if (Opts.ShowNames)
275     Res.push_back("-fdiagnostics-show-name");
276   if (Opts.ShowOptionNames)
277     Res.push_back("-fdiagnostics-show-option");
278   if (Opts.ShowCategories == 1)
279     Res.push_back("-fdiagnostics-show-category=id");
280   else if (Opts.ShowCategories == 2)
281     Res.push_back("-fdiagnostics-show-category=name");
282   switch (Opts.Format) {
283   case DiagnosticOptions::Clang:
284     Res.push_back("-fdiagnostics-format=clang"); break;
285   case DiagnosticOptions::Msvc:
286     Res.push_back("-fdiagnostics-format=msvc");  break;
287   case DiagnosticOptions::Vi:
288     Res.push_back("-fdiagnostics-format=vi");    break;
289   }
290   if (Opts.ErrorLimit) {
291     Res.push_back("-ferror-limit");
292     Res.push_back(llvm::utostr(Opts.ErrorLimit));
293   }
294   if (!Opts.DiagnosticLogFile.empty()) {
295     Res.push_back("-diagnostic-log-file");
296     Res.push_back(Opts.DiagnosticLogFile);
297   }
298   if (Opts.MacroBacktraceLimit
299                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
300     Res.push_back("-fmacro-backtrace-limit");
301     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
302   }
303   if (Opts.TemplateBacktraceLimit
304                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
305     Res.push_back("-ftemplate-backtrace-limit");
306     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
307   }
308 
309   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
310     Res.push_back("-ftabstop");
311     Res.push_back(llvm::utostr(Opts.TabStop));
312   }
313   if (Opts.MessageLength) {
314     Res.push_back("-fmessage-length");
315     Res.push_back(llvm::utostr(Opts.MessageLength));
316   }
317   if (!Opts.DumpBuildInformation.empty()) {
318     Res.push_back("-dump-build-information");
319     Res.push_back(Opts.DumpBuildInformation);
320   }
321   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
322     Res.push_back("-W" + Opts.Warnings[i]);
323 }
324 
325 static const char *getInputKindName(InputKind Kind) {
326   switch (Kind) {
327   case IK_None:              break;
328   case IK_AST:               return "ast";
329   case IK_Asm:               return "assembler-with-cpp";
330   case IK_C:                 return "c";
331   case IK_CXX:               return "c++";
332   case IK_LLVM_IR:           return "ir";
333   case IK_ObjC:              return "objective-c";
334   case IK_ObjCXX:            return "objective-c++";
335   case IK_OpenCL:            return "cl";
336   case IK_CUDA:              return "cuda";
337   case IK_PreprocessedC:     return "cpp-output";
338   case IK_PreprocessedCXX:   return "c++-cpp-output";
339   case IK_PreprocessedObjC:  return "objective-c-cpp-output";
340   case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
341   }
342 
343   llvm_unreachable("Unexpected language kind!");
344   return 0;
345 }
346 
347 static const char *getActionName(frontend::ActionKind Kind) {
348   switch (Kind) {
349   case frontend::PluginAction:
350     llvm_unreachable("Invalid kind!");
351 
352   case frontend::ASTDump:                return "-ast-dump";
353   case frontend::ASTDumpXML:             return "-ast-dump-xml";
354   case frontend::ASTPrint:               return "-ast-print";
355   case frontend::ASTView:                return "-ast-view";
356   case frontend::BoostCon:               return "-boostcon";
357   case frontend::CreateModule:           return "-create-module";
358   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
359   case frontend::DumpTokens:             return "-dump-tokens";
360   case frontend::EmitAssembly:           return "-S";
361   case frontend::EmitBC:                 return "-emit-llvm-bc";
362   case frontend::EmitHTML:               return "-emit-html";
363   case frontend::EmitLLVM:               return "-emit-llvm";
364   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
365   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
366   case frontend::EmitObj:                return "-emit-obj";
367   case frontend::FixIt:                  return "-fixit";
368   case frontend::GeneratePCH:            return "-emit-pch";
369   case frontend::GeneratePTH:            return "-emit-pth";
370   case frontend::InitOnly:               return "-init-only";
371   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
372   case frontend::PrintDeclContext:       return "-print-decl-contexts";
373   case frontend::PrintPreamble:          return "-print-preamble";
374   case frontend::PrintPreprocessedInput: return "-E";
375   case frontend::RewriteMacros:          return "-rewrite-macros";
376   case frontend::RewriteObjC:            return "-rewrite-objc";
377   case frontend::RewriteTest:            return "-rewrite-test";
378   case frontend::RunAnalysis:            return "-analyze";
379   case frontend::RunPreprocessorOnly:    return "-Eonly";
380   }
381 
382   llvm_unreachable("Unexpected language kind!");
383   return 0;
384 }
385 
386 static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
387                                  std::vector<std::string> &Res) {
388   if (!Opts.WorkingDir.empty()) {
389     Res.push_back("-working-directory");
390     Res.push_back(Opts.WorkingDir);
391   }
392 }
393 
394 static void FrontendOptsToArgs(const FrontendOptions &Opts,
395                                std::vector<std::string> &Res) {
396   if (Opts.DisableFree)
397     Res.push_back("-disable-free");
398   if (Opts.RelocatablePCH)
399     Res.push_back("-relocatable-pch");
400   if (Opts.ChainedPCH)
401     Res.push_back("-chained-pch");
402   if (Opts.ShowHelp)
403     Res.push_back("-help");
404   if (Opts.ShowMacrosInCodeCompletion)
405     Res.push_back("-code-completion-macros");
406   if (Opts.ShowCodePatternsInCodeCompletion)
407     Res.push_back("-code-completion-patterns");
408   if (!Opts.ShowGlobalSymbolsInCodeCompletion)
409     Res.push_back("-no-code-completion-globals");
410   if (Opts.ShowStats)
411     Res.push_back("-print-stats");
412   if (Opts.ShowTimers)
413     Res.push_back("-ftime-report");
414   if (Opts.ShowVersion)
415     Res.push_back("-version");
416   if (Opts.FixWhatYouCan)
417     Res.push_back("-fix-what-you-can");
418   switch (Opts.ARCMTAction) {
419   case FrontendOptions::ARCMT_None:
420     break;
421   case FrontendOptions::ARCMT_Check:
422     Res.push_back("-arcmt-check");
423     break;
424   case FrontendOptions::ARCMT_Modify:
425     Res.push_back("-arcmt-modify");
426     break;
427   case FrontendOptions::ARCMT_ModifyInMemory:
428     Res.push_back("-arcmt-modify-in-memory");
429     break;
430   }
431 
432   bool NeedLang = false;
433   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
434     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
435         Opts.Inputs[i].first)
436       NeedLang = true;
437   if (NeedLang) {
438     Res.push_back("-x");
439     Res.push_back(getInputKindName(Opts.Inputs[0].first));
440   }
441   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
442     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
443            "Unable to represent this input vector!");
444     Res.push_back(Opts.Inputs[i].second);
445   }
446 
447   if (!Opts.OutputFile.empty()) {
448     Res.push_back("-o");
449     Res.push_back(Opts.OutputFile);
450   }
451   if (!Opts.CodeCompletionAt.FileName.empty()) {
452     Res.push_back("-code-completion-at");
453     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
454                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
455                   llvm::utostr(Opts.CodeCompletionAt.Column));
456   }
457   if (Opts.ProgramAction != frontend::PluginAction)
458     Res.push_back(getActionName(Opts.ProgramAction));
459   if (!Opts.ActionName.empty()) {
460     Res.push_back("-plugin");
461     Res.push_back(Opts.ActionName);
462     for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
463       Res.push_back("-plugin-arg-" + Opts.ActionName);
464       Res.push_back(Opts.PluginArgs[i]);
465     }
466   }
467   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
468     Res.push_back("-load");
469     Res.push_back(Opts.Plugins[i]);
470   }
471   for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
472     Res.push_back("-add-plugin");
473     Res.push_back(Opts.AddPluginActions[i]);
474     for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
475       Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
476       Res.push_back(Opts.AddPluginArgs[i][ai]);
477     }
478   }
479   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
480     Res.push_back("-ast-merge");
481     Res.push_back(Opts.ASTMergeFiles[i]);
482   }
483   for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
484     Res.push_back("-import-module");
485     Res.push_back(Opts.Modules[i]);
486   }
487   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
488     Res.push_back("-mllvm");
489     Res.push_back(Opts.LLVMArgs[i]);
490   }
491 }
492 
493 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
494                                    std::vector<std::string> &Res) {
495   if (Opts.Sysroot != "/") {
496     Res.push_back("-isysroot");
497     Res.push_back(Opts.Sysroot);
498   }
499 
500   /// User specified include entries.
501   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
502     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
503     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
504       llvm::report_fatal_error("Invalid option set!");
505     if (E.IsUserSupplied) {
506       if (E.Group == frontend::After) {
507         Res.push_back("-idirafter");
508       } else if (E.Group == frontend::Quoted) {
509         Res.push_back("-iquote");
510       } else if (E.Group == frontend::System) {
511         Res.push_back("-isystem");
512       } else if (E.Group == frontend::CXXSystem) {
513         Res.push_back("-cxx-isystem");
514       } else {
515         assert(E.Group == frontend::Angled && "Invalid group!");
516         Res.push_back(E.IsFramework ? "-F" : "-I");
517       }
518     } else {
519       if (E.Group != frontend::Angled && E.Group != frontend::System)
520         llvm::report_fatal_error("Invalid option set!");
521       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
522                     "-iwithprefix");
523     }
524     Res.push_back(E.Path);
525   }
526 
527   if (!Opts.EnvIncPath.empty()) {
528     // FIXME: Provide an option for this, and move env detection to driver.
529     llvm::report_fatal_error("Not yet implemented!");
530   }
531   if (!Opts.CEnvIncPath.empty()) {
532     // FIXME: Provide an option for this, and move env detection to driver.
533     llvm::report_fatal_error("Not yet implemented!");
534   }
535   if (!Opts.ObjCEnvIncPath.empty()) {
536     // FIXME: Provide an option for this, and move env detection to driver.
537     llvm::report_fatal_error("Not yet implemented!");
538   }
539   if (!Opts.CXXEnvIncPath.empty()) {
540     // FIXME: Provide an option for this, and move env detection to driver.
541     llvm::report_fatal_error("Not yet implemented!");
542   }
543   if (!Opts.ObjCXXEnvIncPath.empty()) {
544     // FIXME: Provide an option for this, and move env detection to driver.
545     llvm::report_fatal_error("Not yet implemented!");
546   }
547   if (!Opts.ResourceDir.empty()) {
548     Res.push_back("-resource-dir");
549     Res.push_back(Opts.ResourceDir);
550   }
551   if (!Opts.UseStandardIncludes)
552     Res.push_back("-nostdinc");
553   if (!Opts.UseStandardCXXIncludes)
554     Res.push_back("-nostdinc++");
555   if (Opts.Verbose)
556     Res.push_back("-v");
557 }
558 
559 static void LangOptsToArgs(const LangOptions &Opts,
560                            std::vector<std::string> &Res) {
561   LangOptions DefaultLangOpts;
562 
563   // FIXME: Need to set -std to get all the implicit options.
564 
565   // FIXME: We want to only pass options relative to the defaults, which
566   // requires constructing a target. :(
567   //
568   // It would be better to push the all target specific choices into the driver,
569   // so that everything below that was more uniform.
570 
571   if (Opts.Trigraphs)
572     Res.push_back("-trigraphs");
573   // Implicit based on the input kind:
574   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
575   // Implicit based on the input language standard:
576   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
577   if (Opts.DollarIdents)
578     Res.push_back("-fdollars-in-identifiers");
579   if (Opts.GNUMode && !Opts.GNUKeywords)
580     Res.push_back("-fno-gnu-keywords");
581   if (!Opts.GNUMode && Opts.GNUKeywords)
582     Res.push_back("-fgnu-keywords");
583   if (Opts.Microsoft)
584     Res.push_back("-fms-extensions");
585   if (Opts.MSCVersion != 0)
586     Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
587   if (Opts.Borland)
588     Res.push_back("-fborland-extensions");
589   if (Opts.ObjCNonFragileABI)
590     Res.push_back("-fobjc-nonfragile-abi");
591   if (Opts.ObjCNonFragileABI2)
592     Res.push_back("-fobjc-nonfragile-abi");
593   if (Opts.ObjCDefaultSynthProperties)
594     Res.push_back("-fobjc-default-synthesize-properties");
595   // NoInline is implicit.
596   if (!Opts.CXXOperatorNames)
597     Res.push_back("-fno-operator-names");
598   if (Opts.PascalStrings)
599     Res.push_back("-fpascal-strings");
600   if (Opts.CatchUndefined)
601     Res.push_back("-fcatch-undefined-behavior");
602   if (Opts.WritableStrings)
603     Res.push_back("-fwritable-strings");
604   if (Opts.ConstStrings)
605     Res.push_back("-fconst-strings");
606   if (!Opts.LaxVectorConversions)
607     Res.push_back("-fno-lax-vector-conversions");
608   if (Opts.AltiVec)
609     Res.push_back("-faltivec");
610   if (Opts.Exceptions)
611     Res.push_back("-fexceptions");
612   if (Opts.ObjCExceptions)
613     Res.push_back("-fobjc-exceptions");
614   if (Opts.CXXExceptions)
615     Res.push_back("-fcxx-exceptions");
616   if (Opts.SjLjExceptions)
617     Res.push_back("-fsjlj-exceptions");
618   if (Opts.TraditionalCPP)
619     Res.push_back("-traditional-cpp");
620   if (!Opts.RTTI)
621     Res.push_back("-fno-rtti");
622   if (Opts.MSBitfields)
623     Res.push_back("-mms-bitfields");
624   if (!Opts.NeXTRuntime)
625     Res.push_back("-fgnu-runtime");
626   if (Opts.Freestanding)
627     Res.push_back("-ffreestanding");
628   if (Opts.NoBuiltin)
629     Res.push_back("-fno-builtin");
630   if (!Opts.AssumeSaneOperatorNew)
631     Res.push_back("-fno-assume-sane-operator-new");
632   if (!Opts.ThreadsafeStatics)
633     Res.push_back("-fno-threadsafe-statics");
634   if (Opts.POSIXThreads)
635     Res.push_back("-pthread");
636   if (Opts.Blocks)
637     Res.push_back("-fblocks");
638   if (Opts.EmitAllDecls)
639     Res.push_back("-femit-all-decls");
640   if (Opts.MathErrno)
641     Res.push_back("-fmath-errno");
642   switch (Opts.getSignedOverflowBehavior()) {
643   case LangOptions::SOB_Undefined: break;
644   case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
645   case LangOptions::SOB_Trapping:
646     Res.push_back("-ftrapv"); break;
647     if (!Opts.OverflowHandler.empty()) {
648       Res.push_back("-ftrapv-handler");
649       Res.push_back(Opts.OverflowHandler);
650     }
651   }
652   if (Opts.HeinousExtensions)
653     Res.push_back("-fheinous-gnu-extensions");
654   // Optimize is implicit.
655   // OptimizeSize is implicit.
656   if (Opts.Static)
657     Res.push_back("-static-define");
658   if (Opts.DumpRecordLayouts)
659     Res.push_back("-fdump-record-layouts");
660   if (Opts.DumpVTableLayouts)
661     Res.push_back("-fdump-vtable-layouts");
662   if (Opts.NoBitFieldTypeAlign)
663     Res.push_back("-fno-bitfield-type-alignment");
664   if (Opts.PICLevel) {
665     Res.push_back("-pic-level");
666     Res.push_back(llvm::utostr(Opts.PICLevel));
667   }
668   if (Opts.ObjCGCBitmapPrint)
669     Res.push_back("-print-ivar-layout");
670   if (Opts.NoConstantCFStrings)
671     Res.push_back("-fno-constant-cfstrings");
672   if (!Opts.AccessControl)
673     Res.push_back("-fno-access-control");
674   if (!Opts.CharIsSigned)
675     Res.push_back("-fno-signed-char");
676   if (Opts.ShortWChar)
677     Res.push_back("-fshort-wchar");
678   if (!Opts.ElideConstructors)
679     Res.push_back("-fno-elide-constructors");
680   if (Opts.getGCMode() != LangOptions::NonGC) {
681     if (Opts.getGCMode() == LangOptions::HybridGC) {
682       Res.push_back("-fobjc-gc");
683     } else {
684       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
685       Res.push_back("-fobjc-gc-only");
686     }
687   }
688   if (Opts.ObjCAutoRefCount)
689     Res.push_back("-fobjc-arc");
690   if (Opts.ObjCNoAutoRefCountRuntime)
691     Res.push_back("-fobjc-no-arc-runtime");
692   if (!Opts.ObjCInferRelatedResultType)
693     Res.push_back("-fno-objc-infer-related-result-type");
694 
695   if (Opts.AppleKext)
696     Res.push_back("-fapple-kext");
697 
698   if (Opts.getVisibilityMode() != DefaultVisibility) {
699     Res.push_back("-fvisibility");
700     if (Opts.getVisibilityMode() == HiddenVisibility) {
701       Res.push_back("hidden");
702     } else {
703       assert(Opts.getVisibilityMode() == ProtectedVisibility &&
704              "Invalid visibility!");
705       Res.push_back("protected");
706     }
707   }
708   if (Opts.InlineVisibilityHidden)
709     Res.push_back("-fvisibility-inlines-hidden");
710 
711   if (Opts.getStackProtectorMode() != 0) {
712     Res.push_back("-stack-protector");
713     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
714   }
715   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
716     Res.push_back("-ftemplate-depth");
717     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
718   }
719   if (!Opts.ObjCConstantStringClass.empty()) {
720     Res.push_back("-fconstant-string-class");
721     Res.push_back(Opts.ObjCConstantStringClass);
722   }
723   if (Opts.FakeAddressSpaceMap)
724     Res.push_back("-ffake-address-space-map");
725   if (Opts.ParseUnknownAnytype)
726     Res.push_back("-funknown-anytype");
727   if (Opts.DelayedTemplateParsing)
728     Res.push_back("-fdelayed-template-parsing");
729   if (Opts.Deprecated)
730     Res.push_back("-fdeprecated-macro");
731 }
732 
733 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
734                                    std::vector<std::string> &Res) {
735   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
736     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
737                   Opts.Macros[i].first);
738   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
739     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
740     Res.push_back("-include");
741     Res.push_back(Opts.Includes[i]);
742   }
743   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
744     Res.push_back("-imacros");
745     Res.push_back(Opts.MacroIncludes[i]);
746   }
747   if (!Opts.UsePredefines)
748     Res.push_back("-undef");
749   if (Opts.DetailedRecord)
750     Res.push_back("-detailed-preprocessing-record");
751   if (!Opts.ImplicitPCHInclude.empty()) {
752     Res.push_back("-include-pch");
753     Res.push_back(Opts.ImplicitPCHInclude);
754   }
755   if (!Opts.ImplicitPTHInclude.empty()) {
756     Res.push_back("-include-pth");
757     Res.push_back(Opts.ImplicitPTHInclude);
758   }
759   if (!Opts.TokenCache.empty()) {
760     if (Opts.ImplicitPTHInclude.empty()) {
761       Res.push_back("-token-cache");
762       Res.push_back(Opts.TokenCache);
763     } else
764       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
765              "Unsupported option combination!");
766   }
767   for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i) {
768     Res.push_back("-chain-include");
769     Res.push_back(Opts.ChainedIncludes[i]);
770   }
771   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
772     Res.push_back("-remap-file");
773     Res.push_back(Opts.RemappedFiles[i].first + ";" +
774                   Opts.RemappedFiles[i].second);
775   }
776 }
777 
778 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
779                                          std::vector<std::string> &Res) {
780   if (!Opts.ShowCPP && !Opts.ShowMacros)
781     llvm::report_fatal_error("Invalid option combination!");
782 
783   if (Opts.ShowCPP && Opts.ShowMacros)
784     Res.push_back("-dD");
785   else if (!Opts.ShowCPP && Opts.ShowMacros)
786     Res.push_back("-dM");
787 
788   if (!Opts.ShowLineMarkers)
789     Res.push_back("-P");
790   if (Opts.ShowComments)
791     Res.push_back("-C");
792   if (Opts.ShowMacroComments)
793     Res.push_back("-CC");
794 }
795 
796 static void TargetOptsToArgs(const TargetOptions &Opts,
797                              std::vector<std::string> &Res) {
798   Res.push_back("-triple");
799   Res.push_back(Opts.Triple);
800   if (!Opts.CPU.empty()) {
801     Res.push_back("-target-cpu");
802     Res.push_back(Opts.CPU);
803   }
804   if (!Opts.ABI.empty()) {
805     Res.push_back("-target-abi");
806     Res.push_back(Opts.ABI);
807   }
808   if (!Opts.LinkerVersion.empty()) {
809     Res.push_back("-target-linker-version");
810     Res.push_back(Opts.LinkerVersion);
811   }
812   if (!Opts.CXXABI.empty()) {
813     Res.push_back("-cxx-abi");
814     Res.push_back(Opts.CXXABI);
815   }
816   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
817     Res.push_back("-target-feature");
818     Res.push_back(Opts.Features[i]);
819   }
820 }
821 
822 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
823   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
824   CodeGenOptsToArgs(getCodeGenOpts(), Res);
825   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
826   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
827   FileSystemOptsToArgs(getFileSystemOpts(), Res);
828   FrontendOptsToArgs(getFrontendOpts(), Res);
829   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
830   LangOptsToArgs(getLangOpts(), Res);
831   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
832   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
833   TargetOptsToArgs(getTargetOpts(), Res);
834 }
835 
836 //===----------------------------------------------------------------------===//
837 // Deserialization (to args)
838 //===----------------------------------------------------------------------===//
839 
840 using namespace clang::driver;
841 using namespace clang::driver::cc1options;
842 
843 //
844 
845 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
846                                      Diagnostic &Diags) {
847   unsigned DefaultOpt = 0;
848   if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
849     DefaultOpt = 2;
850   // -Os/-Oz implies -O2
851   return (Args.hasArg(OPT_Os) || Args.hasArg (OPT_Oz)) ? 2 :
852     Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
853 }
854 
855 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
856                               Diagnostic &Diags) {
857   using namespace cc1options;
858 
859   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
860     llvm::StringRef Name = A->getValue(Args);
861     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
862 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
863       .Case(CMDFLAG, NAME##Model)
864 #include "clang/Frontend/Analyses.def"
865       .Default(NumStores);
866     // FIXME: Error handling.
867     if (Value == NumStores)
868       Diags.Report(diag::err_drv_invalid_value)
869         << A->getAsString(Args) << Name;
870     else
871       Opts.AnalysisStoreOpt = Value;
872   }
873 
874   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
875     llvm::StringRef Name = A->getValue(Args);
876     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
877 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
878       .Case(CMDFLAG, NAME##Model)
879 #include "clang/Frontend/Analyses.def"
880       .Default(NumConstraints);
881     // FIXME: Error handling.
882     if (Value == NumConstraints)
883       Diags.Report(diag::err_drv_invalid_value)
884         << A->getAsString(Args) << Name;
885     else
886       Opts.AnalysisConstraintsOpt = Value;
887   }
888 
889   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
890     llvm::StringRef Name = A->getValue(Args);
891     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
892 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
893       .Case(CMDFLAG, PD_##NAME)
894 #include "clang/Frontend/Analyses.def"
895       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
896     // FIXME: Error handling.
897     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
898       Diags.Report(diag::err_drv_invalid_value)
899         << A->getAsString(Args) << Name;
900     else
901       Opts.AnalysisDiagOpt = Value;
902   }
903 
904   Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
905   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
906   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
907   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
908   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
909   Opts.AnalyzeNestedBlocks =
910     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
911   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
912   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
913   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
914   Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
915   Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
916   Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
917   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
918   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
919   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
920   Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
921   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
922 
923   Opts.CheckersControlList.clear();
924   for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
925                                              OPT_analyzer_disable_checker),
926          ie = Args.filtered_end(); it != ie; ++it) {
927     const Arg *A = *it;
928     A->claim();
929     bool enable = (A->getOption().getID() == OPT_analyzer_checker);
930     // We can have a list of comma separated checker names, e.g:
931     // '-analyzer-checker=cocoa,unix'
932     llvm::StringRef checkerList = A->getValue(Args);
933     llvm::SmallVector<llvm::StringRef, 4> checkers;
934     checkerList.split(checkers, ",");
935     for (unsigned i = 0, e = checkers.size(); i != e; ++i)
936       Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
937   }
938 }
939 
940 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
941                              Diagnostic &Diags) {
942   using namespace cc1options;
943 
944   Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
945   if (Opts.OptimizationLevel > 3) {
946     Diags.Report(diag::err_drv_invalid_value)
947       << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
948     Opts.OptimizationLevel = 3;
949   }
950 
951   // We must always run at least the always inlining pass.
952   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
953     : CodeGenOptions::OnlyAlwaysInlining;
954 
955   Opts.DebugInfo = Args.hasArg(OPT_g);
956   Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
957   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
958   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
959   Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
960   Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
961   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
962   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
963   Opts.NoCommon = Args.hasArg(OPT_fno_common);
964   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
965   Opts.OptimizeSize = Args.hasArg(OPT_Os);
966   Opts.OptimizeSize = Args.hasArg(OPT_Oz) ? 2 : Opts.OptimizeSize;
967   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
968                             Args.hasArg(OPT_ffreestanding));
969   Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
970                      (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
971 
972   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
973   Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
974   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
975   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
976   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
977   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
978   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
979   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
980   Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
981   Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
982   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
983   Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
984                                           Args.hasArg(OPT_cl_fast_relaxed_math);
985   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
986   Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
987   Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
988   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
989   Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
990   Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
991   Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
992   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
993   Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
994                       Args.hasArg(OPT_cl_fast_relaxed_math);
995   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
996   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
997 
998   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
999   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1000 
1001   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1002   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1003 
1004   Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1005   Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1006   Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1007   Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1008   Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1009 
1010   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1011     llvm::StringRef Name = A->getValue(Args);
1012     unsigned Method = llvm::StringSwitch<unsigned>(Name)
1013       .Case("legacy", CodeGenOptions::Legacy)
1014       .Case("non-legacy", CodeGenOptions::NonLegacy)
1015       .Case("mixed", CodeGenOptions::Mixed)
1016       .Default(~0U);
1017     if (Method == ~0U)
1018       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1019     else
1020       Opts.ObjCDispatchMethod = Method;
1021   }
1022 }
1023 
1024 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1025                                       ArgList &Args) {
1026   using namespace cc1options;
1027   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1028   Opts.Targets = Args.getAllArgValues(OPT_MT);
1029   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1030   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1031   Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1032   Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1033 }
1034 
1035 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1036                                 Diagnostic &Diags) {
1037   using namespace cc1options;
1038   Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1039   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1040   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1041   Opts.Pedantic = Args.hasArg(OPT_pedantic);
1042   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1043   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1044   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1045   Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1046                                  OPT_fno_show_column,
1047                                  /*Default=*/true);
1048   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1049   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1050   Opts.ShowNames = Args.hasArg(OPT_fdiagnostics_show_name);
1051   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1052 
1053   // Default behavior is to not to show note include stacks.
1054   Opts.ShowNoteIncludeStack = false;
1055   if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1056                                OPT_fno_diagnostics_show_note_include_stack))
1057     if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1058       Opts.ShowNoteIncludeStack = true;
1059 
1060   llvm::StringRef ShowOverloads =
1061     Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1062   if (ShowOverloads == "best")
1063     Opts.ShowOverloads = Diagnostic::Ovl_Best;
1064   else if (ShowOverloads == "all")
1065     Opts.ShowOverloads = Diagnostic::Ovl_All;
1066   else
1067     Diags.Report(diag::err_drv_invalid_value)
1068       << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1069       << ShowOverloads;
1070 
1071   llvm::StringRef ShowCategory =
1072     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1073   if (ShowCategory == "none")
1074     Opts.ShowCategories = 0;
1075   else if (ShowCategory == "id")
1076     Opts.ShowCategories = 1;
1077   else if (ShowCategory == "name")
1078     Opts.ShowCategories = 2;
1079   else
1080     Diags.Report(diag::err_drv_invalid_value)
1081       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1082       << ShowCategory;
1083 
1084   llvm::StringRef Format =
1085     Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1086   if (Format == "clang")
1087     Opts.Format = DiagnosticOptions::Clang;
1088   else if (Format == "msvc")
1089     Opts.Format = DiagnosticOptions::Msvc;
1090   else if (Format == "vi")
1091     Opts.Format = DiagnosticOptions::Vi;
1092   else
1093     Diags.Report(diag::err_drv_invalid_value)
1094       << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1095       << Format;
1096 
1097   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1098   Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1099   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1100   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1101   Opts.MacroBacktraceLimit
1102     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1103                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1104   Opts.TemplateBacktraceLimit
1105     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1106                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
1107                          Diags);
1108   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1109                                     DiagnosticOptions::DefaultTabStop, Diags);
1110   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1111     Diags.Report(diag::warn_ignoring_ftabstop_value)
1112       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1113     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1114   }
1115   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1116   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1117   Opts.Warnings = Args.getAllArgValues(OPT_W);
1118 }
1119 
1120 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1121   Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1122 }
1123 
1124 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1125                                    Diagnostic &Diags) {
1126   using namespace cc1options;
1127   Opts.ProgramAction = frontend::ParseSyntaxOnly;
1128   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1129     switch (A->getOption().getID()) {
1130     default:
1131       assert(0 && "Invalid option in group!");
1132     case OPT_ast_dump:
1133       Opts.ProgramAction = frontend::ASTDump; break;
1134     case OPT_ast_dump_xml:
1135       Opts.ProgramAction = frontend::ASTDumpXML; break;
1136     case OPT_ast_print:
1137       Opts.ProgramAction = frontend::ASTPrint; break;
1138     case OPT_ast_view:
1139       Opts.ProgramAction = frontend::ASTView; break;
1140     case OPT_boostcon:
1141       Opts.ProgramAction = frontend::BoostCon; break;
1142     case OPT_dump_raw_tokens:
1143       Opts.ProgramAction = frontend::DumpRawTokens; break;
1144     case OPT_dump_tokens:
1145       Opts.ProgramAction = frontend::DumpTokens; break;
1146     case OPT_S:
1147       Opts.ProgramAction = frontend::EmitAssembly; break;
1148     case OPT_emit_llvm_bc:
1149       Opts.ProgramAction = frontend::EmitBC; break;
1150     case OPT_emit_html:
1151       Opts.ProgramAction = frontend::EmitHTML; break;
1152     case OPT_emit_llvm:
1153       Opts.ProgramAction = frontend::EmitLLVM; break;
1154     case OPT_emit_llvm_only:
1155       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1156     case OPT_emit_codegen_only:
1157       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1158     case OPT_emit_obj:
1159       Opts.ProgramAction = frontend::EmitObj; break;
1160     case OPT_fixit_EQ:
1161       Opts.FixItSuffix = A->getValue(Args);
1162       // fall-through!
1163     case OPT_fixit:
1164       Opts.ProgramAction = frontend::FixIt; break;
1165     case OPT_emit_pch:
1166       Opts.ProgramAction = frontend::GeneratePCH; break;
1167     case OPT_emit_pth:
1168       Opts.ProgramAction = frontend::GeneratePTH; break;
1169     case OPT_init_only:
1170       Opts.ProgramAction = frontend::InitOnly; break;
1171     case OPT_fsyntax_only:
1172       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1173     case OPT_print_decl_contexts:
1174       Opts.ProgramAction = frontend::PrintDeclContext; break;
1175     case OPT_print_preamble:
1176       Opts.ProgramAction = frontend::PrintPreamble; break;
1177     case OPT_E:
1178       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1179     case OPT_rewrite_macros:
1180       Opts.ProgramAction = frontend::RewriteMacros; break;
1181     case OPT_rewrite_objc:
1182       Opts.ProgramAction = frontend::RewriteObjC; break;
1183     case OPT_rewrite_test:
1184       Opts.ProgramAction = frontend::RewriteTest; break;
1185     case OPT_analyze:
1186       Opts.ProgramAction = frontend::RunAnalysis; break;
1187     case OPT_Eonly:
1188       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1189     case OPT_create_module:
1190       Opts.ProgramAction = frontend::CreateModule; break;
1191     }
1192   }
1193 
1194   if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1195     Opts.Plugins.push_back(A->getValue(Args,0));
1196     Opts.ProgramAction = frontend::PluginAction;
1197     Opts.ActionName = A->getValue(Args);
1198 
1199     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1200            end = Args.filtered_end(); it != end; ++it) {
1201       if ((*it)->getValue(Args, 0) == Opts.ActionName)
1202         Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1203     }
1204   }
1205 
1206   Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1207   Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1208   for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1209     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1210            end = Args.filtered_end(); it != end; ++it) {
1211       if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1212         Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1213     }
1214   }
1215 
1216   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1217     Opts.CodeCompletionAt =
1218       ParsedSourceLocation::FromString(A->getValue(Args));
1219     if (Opts.CodeCompletionAt.FileName.empty())
1220       Diags.Report(diag::err_drv_invalid_value)
1221         << A->getAsString(Args) << A->getValue(Args);
1222   }
1223   Opts.DisableFree = Args.hasArg(OPT_disable_free);
1224 
1225   Opts.OutputFile = Args.getLastArgValue(OPT_o);
1226   Opts.Plugins = Args.getAllArgValues(OPT_load);
1227   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1228   Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1229   Opts.ShowHelp = Args.hasArg(OPT_help);
1230   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1231   Opts.ShowCodePatternsInCodeCompletion
1232     = Args.hasArg(OPT_code_completion_patterns);
1233   Opts.ShowGlobalSymbolsInCodeCompletion
1234     = !Args.hasArg(OPT_no_code_completion_globals);
1235   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1236   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1237   Opts.ShowVersion = Args.hasArg(OPT_version);
1238   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1239   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1240   Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1241   Opts.Modules = Args.getAllArgValues(OPT_import_module);
1242 
1243   Opts.ARCMTAction = FrontendOptions::ARCMT_None;
1244   if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1245                                      OPT_arcmt_modify,
1246                                      OPT_arcmt_modify_in_memory)) {
1247     switch (A->getOption().getID()) {
1248     default:
1249       llvm_unreachable("missed a case");
1250     case OPT_arcmt_check:
1251       Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1252       break;
1253     case OPT_arcmt_modify:
1254       Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1255       break;
1256     case OPT_arcmt_modify_in_memory:
1257       Opts.ARCMTAction = FrontendOptions::ARCMT_ModifyInMemory;
1258       break;
1259     }
1260   }
1261 
1262   InputKind DashX = IK_None;
1263   if (const Arg *A = Args.getLastArg(OPT_x)) {
1264     DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1265       .Case("c", IK_C)
1266       .Case("cl", IK_OpenCL)
1267       .Case("cuda", IK_CUDA)
1268       .Case("c++", IK_CXX)
1269       .Case("objective-c", IK_ObjC)
1270       .Case("objective-c++", IK_ObjCXX)
1271       .Case("cpp-output", IK_PreprocessedC)
1272       .Case("assembler-with-cpp", IK_Asm)
1273       .Case("c++-cpp-output", IK_PreprocessedCXX)
1274       .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1275       .Case("objc-cpp-output", IK_PreprocessedObjC)
1276       .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1277       .Case("c-header", IK_C)
1278       .Case("objective-c-header", IK_ObjC)
1279       .Case("c++-header", IK_CXX)
1280       .Case("objective-c++-header", IK_ObjCXX)
1281       .Case("ast", IK_AST)
1282       .Case("ir", IK_LLVM_IR)
1283       .Default(IK_None);
1284     if (DashX == IK_None)
1285       Diags.Report(diag::err_drv_invalid_value)
1286         << A->getAsString(Args) << A->getValue(Args);
1287   }
1288 
1289   // '-' is the default input if none is given.
1290   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1291   Opts.Inputs.clear();
1292   if (Inputs.empty())
1293     Inputs.push_back("-");
1294   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1295     InputKind IK = DashX;
1296     if (IK == IK_None) {
1297       IK = FrontendOptions::getInputKindForExtension(
1298         llvm::StringRef(Inputs[i]).rsplit('.').second);
1299       // FIXME: Remove this hack.
1300       if (i == 0)
1301         DashX = IK;
1302     }
1303     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1304   }
1305 
1306   return DashX;
1307 }
1308 
1309 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1310                                                  void *MainAddr) {
1311   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1312 
1313   if (!P.isEmpty()) {
1314     P.eraseComponent();  // Remove /clang from foo/bin/clang
1315     P.eraseComponent();  // Remove /bin   from foo/bin
1316 
1317     // Get foo/lib/clang/<version>/include
1318     P.appendComponent("lib");
1319     P.appendComponent("clang");
1320     P.appendComponent(CLANG_VERSION_STRING);
1321   }
1322 
1323   return P.str();
1324 }
1325 
1326 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1327   using namespace cc1options;
1328   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1329   Opts.Verbose = Args.hasArg(OPT_v);
1330   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1331   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1332   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1333   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1334 
1335   // Add -I... and -F... options in order.
1336   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1337          ie = Args.filtered_end(); it != ie; ++it)
1338     Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1339                  /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1340 
1341   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1342   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1343   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1344                                              OPT_iwithprefixbefore),
1345          ie = Args.filtered_end(); it != ie; ++it) {
1346     const Arg *A = *it;
1347     if (A->getOption().matches(OPT_iprefix))
1348       Prefix = A->getValue(Args);
1349     else if (A->getOption().matches(OPT_iwithprefix))
1350       Opts.AddPath(Prefix.str() + A->getValue(Args),
1351                    frontend::System, false, false, true);
1352     else
1353       Opts.AddPath(Prefix.str() + A->getValue(Args),
1354                    frontend::Angled, false, false, true);
1355   }
1356 
1357   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1358          ie = Args.filtered_end(); it != ie; ++it)
1359     Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1360   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1361          ie = Args.filtered_end(); it != ie; ++it)
1362     Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1363   for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem, OPT_isystem,
1364          OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1365     Opts.AddPath((*it)->getValue(Args),
1366                  ((*it)->getOption().matches(OPT_cxx_isystem) ?
1367                    frontend::CXXSystem : frontend::System),
1368                  true, false, (*it)->getOption().matches(OPT_iwithsysroot));
1369 
1370   // FIXME: Need options for the various environment variables!
1371 }
1372 
1373 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1374                                          LangStandard::Kind LangStd) {
1375   // Set some properties which depend solely on the input kind; it would be nice
1376   // to move these to the language standard, and have the driver resolve the
1377   // input kind + language standard.
1378   if (IK == IK_Asm) {
1379     Opts.AsmPreprocessor = 1;
1380   } else if (IK == IK_ObjC ||
1381              IK == IK_ObjCXX ||
1382              IK == IK_PreprocessedObjC ||
1383              IK == IK_PreprocessedObjCXX) {
1384     Opts.ObjC1 = Opts.ObjC2 = 1;
1385   }
1386 
1387   if (LangStd == LangStandard::lang_unspecified) {
1388     // Based on the base language, pick one.
1389     switch (IK) {
1390     case IK_None:
1391     case IK_AST:
1392     case IK_LLVM_IR:
1393       assert(0 && "Invalid input kind!");
1394     case IK_OpenCL:
1395       LangStd = LangStandard::lang_opencl;
1396       break;
1397     case IK_CUDA:
1398       LangStd = LangStandard::lang_cuda;
1399       break;
1400     case IK_Asm:
1401     case IK_C:
1402     case IK_PreprocessedC:
1403     case IK_ObjC:
1404     case IK_PreprocessedObjC:
1405       LangStd = LangStandard::lang_gnu99;
1406       break;
1407     case IK_CXX:
1408     case IK_PreprocessedCXX:
1409     case IK_ObjCXX:
1410     case IK_PreprocessedObjCXX:
1411       LangStd = LangStandard::lang_gnucxx98;
1412       break;
1413     }
1414   }
1415 
1416   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1417   Opts.BCPLComment = Std.hasBCPLComments();
1418   Opts.C99 = Std.isC99();
1419   Opts.C1X = Std.isC1X();
1420   Opts.CPlusPlus = Std.isCPlusPlus();
1421   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1422   Opts.Digraphs = Std.hasDigraphs();
1423   Opts.GNUMode = Std.isGNUMode();
1424   Opts.GNUInline = !Std.isC99();
1425   Opts.HexFloats = Std.hasHexFloats();
1426   Opts.ImplicitInt = Std.hasImplicitInt();
1427 
1428   // OpenCL has some additional defaults.
1429   if (LangStd == LangStandard::lang_opencl) {
1430     Opts.OpenCL = 1;
1431     Opts.AltiVec = 1;
1432     Opts.CXXOperatorNames = 1;
1433     Opts.LaxVectorConversions = 1;
1434     Opts.DefaultFPContract = 1;
1435   }
1436 
1437   if (LangStd == LangStandard::lang_cuda)
1438     Opts.CUDA = 1;
1439 
1440   // OpenCL and C++ both have bool, true, false keywords.
1441   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1442 
1443   Opts.GNUKeywords = Opts.GNUMode;
1444   Opts.CXXOperatorNames = Opts.CPlusPlus;
1445 
1446   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1447   // is specified, or -std is set to a conforming mode.
1448   Opts.Trigraphs = !Opts.GNUMode;
1449 
1450   Opts.DollarIdents = !Opts.AsmPreprocessor;
1451 }
1452 
1453 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1454                           Diagnostic &Diags) {
1455   // FIXME: Cleanup per-file based stuff.
1456   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1457   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1458     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1459 #define LANGSTANDARD(id, name, desc, features) \
1460       .Case(name, LangStandard::lang_##id)
1461 #include "clang/Frontend/LangStandards.def"
1462       .Default(LangStandard::lang_unspecified);
1463     if (LangStd == LangStandard::lang_unspecified)
1464       Diags.Report(diag::err_drv_invalid_value)
1465         << A->getAsString(Args) << A->getValue(Args);
1466     else {
1467       // Valid standard, check to make sure language and standard are compatable.
1468       const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1469       switch (IK) {
1470       case IK_C:
1471       case IK_ObjC:
1472       case IK_PreprocessedC:
1473       case IK_PreprocessedObjC:
1474         if (!(Std.isC89() || Std.isC99()))
1475           Diags.Report(diag::err_drv_argument_not_allowed_with)
1476             << A->getAsString(Args) << "C/ObjC";
1477         break;
1478       case IK_CXX:
1479       case IK_ObjCXX:
1480       case IK_PreprocessedCXX:
1481       case IK_PreprocessedObjCXX:
1482         if (!Std.isCPlusPlus())
1483           Diags.Report(diag::err_drv_argument_not_allowed_with)
1484             << A->getAsString(Args) << "C++/ObjC++";
1485         break;
1486       case IK_OpenCL:
1487         if (!Std.isC99())
1488           Diags.Report(diag::err_drv_argument_not_allowed_with)
1489             << A->getAsString(Args) << "OpenCL";
1490         break;
1491       case IK_CUDA:
1492         if (!Std.isCPlusPlus())
1493           Diags.Report(diag::err_drv_argument_not_allowed_with)
1494             << A->getAsString(Args) << "CUDA";
1495         break;
1496       default:
1497         break;
1498       }
1499     }
1500   }
1501 
1502   if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1503     if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1504       Diags.Report(diag::err_drv_invalid_value)
1505         << A->getAsString(Args) << A->getValue(Args);
1506     }
1507   }
1508 
1509   CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1510 
1511   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1512   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1513   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1514   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1515   // name, as it doesn't seem a useful distinction.
1516   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1517                                   Opts.GNUKeywords);
1518 
1519   if (Args.hasArg(OPT_fno_operator_names))
1520     Opts.CXXOperatorNames = 0;
1521 
1522   if (Opts.ObjC1) {
1523     if (Args.hasArg(OPT_fobjc_gc_only))
1524       Opts.setGCMode(LangOptions::GCOnly);
1525     else if (Args.hasArg(OPT_fobjc_gc))
1526       Opts.setGCMode(LangOptions::HybridGC);
1527     else if (Args.hasArg(OPT_fobjc_arc)) {
1528       Opts.ObjCAutoRefCount = 1;
1529       if (!Args.hasArg(OPT_fobjc_nonfragile_abi))
1530         Diags.Report(diag::err_arc_nonfragile_abi);
1531       if (Args.hasArg(OPT_fobjc_no_arc_runtime))
1532         Opts.ObjCNoAutoRefCountRuntime = 1;
1533     }
1534 
1535     if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1536       Opts.ObjCInferRelatedResultType = 0;
1537   }
1538 
1539   if (Args.hasArg(OPT_fgnu89_inline))
1540     Opts.GNUInline = 1;
1541 
1542   if (Args.hasArg(OPT_fapple_kext)) {
1543     if (!Opts.CPlusPlus)
1544       Diags.Report(diag::warn_c_kext);
1545     else
1546       Opts.AppleKext = 1;
1547   }
1548 
1549   if (Args.hasArg(OPT_print_ivar_layout))
1550     Opts.ObjCGCBitmapPrint = 1;
1551   if (Args.hasArg(OPT_fno_constant_cfstrings))
1552     Opts.NoConstantCFStrings = 1;
1553 
1554   if (Args.hasArg(OPT_faltivec))
1555     Opts.AltiVec = 1;
1556 
1557   if (Args.hasArg(OPT_pthread))
1558     Opts.POSIXThreads = 1;
1559 
1560   if (Args.hasArg(OPT_fdelayed_template_parsing))
1561     Opts.DelayedTemplateParsing = 1;
1562 
1563   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1564   if (Vis == "default")
1565     Opts.setVisibilityMode(DefaultVisibility);
1566   else if (Vis == "hidden")
1567     Opts.setVisibilityMode(HiddenVisibility);
1568   else if (Vis == "protected")
1569     Opts.setVisibilityMode(ProtectedVisibility);
1570   else
1571     Diags.Report(diag::err_drv_invalid_value)
1572       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1573 
1574   if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1575     Opts.InlineVisibilityHidden = 1;
1576 
1577   if (Args.hasArg(OPT_ftrapv)) {
1578     Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1579     // Set the handler, if one is specified.
1580     Opts.OverflowHandler =
1581         Args.getLastArgValue(OPT_ftrapv_handler);
1582   }
1583   else if (Args.hasArg(OPT_fwrapv))
1584     Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1585 
1586   if (Args.hasArg(OPT_trigraphs))
1587     Opts.Trigraphs = 1;
1588 
1589   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1590                                    OPT_fno_dollars_in_identifiers,
1591                                    Opts.DollarIdents);
1592   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1593   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1594   Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1595   Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1596   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1597   Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1598                                    Opts.ConstStrings);
1599   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1600     Opts.LaxVectorConversions = 0;
1601   if (Args.hasArg(OPT_fno_threadsafe_statics))
1602     Opts.ThreadsafeStatics = 0;
1603   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1604   Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1605   Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1606   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1607   Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1608 
1609   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1610   Opts.Blocks = Args.hasArg(OPT_fblocks);
1611   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1612   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1613   Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1614   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1615   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1616   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1617   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1618   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1619   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1620   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1621   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1622                                                Diags);
1623   Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1624   Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1625                                                     0, Diags);
1626   Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1627   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1628   Opts.ObjCConstantStringClass =
1629     Args.getLastArgValue(OPT_fconstant_string_class);
1630   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1631   if (Opts.ObjCNonFragileABI)
1632     Opts.ObjCNonFragileABI2 = true;
1633   Opts.ObjCDefaultSynthProperties =
1634     Args.hasArg(OPT_fobjc_default_synthesize_properties);
1635   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1636   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1637   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1638   Opts.Static = Args.hasArg(OPT_static_define);
1639   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1640   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1641   Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1642   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1643   Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1644   Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1645   Opts.OptimizeSize = 0;
1646   Opts.MRTD = Args.hasArg(OPT_mrtd);
1647   Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1648   Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1649 
1650   // Record whether the __DEPRECATED define was requested.
1651   Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1652                                  OPT_fno_deprecated_macro,
1653                                  Opts.Deprecated);
1654 
1655   // FIXME: Eliminate this dependency.
1656   unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1657   Opts.Optimize = Opt != 0;
1658 
1659   // This is the __NO_INLINE__ define, which just depends on things like the
1660   // optimization level and -fno-inline, not actually whether the backend has
1661   // inlining enabled.
1662   //
1663   // FIXME: This is affected by other options (-fno-inline).
1664   Opts.NoInline = !Opt;
1665 
1666   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1667   switch (SSP) {
1668   default:
1669     Diags.Report(diag::err_drv_invalid_value)
1670       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1671     break;
1672   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1673   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1674   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1675   }
1676 }
1677 
1678 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1679                                   FileManager &FileMgr,
1680                                   Diagnostic &Diags) {
1681   using namespace cc1options;
1682   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1683   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1684   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1685       Opts.TokenCache = A->getValue(Args);
1686   else
1687     Opts.TokenCache = Opts.ImplicitPTHInclude;
1688   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1689   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1690   Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1691 
1692   Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1693   for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1694          ie = Args.filtered_end(); it != ie; ++it) {
1695     const Arg *A = *it;
1696     Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1697   }
1698 
1699   if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1700     llvm::StringRef Value(A->getValue(Args));
1701     size_t Comma = Value.find(',');
1702     unsigned Bytes = 0;
1703     unsigned EndOfLine = 0;
1704 
1705     if (Comma == llvm::StringRef::npos ||
1706         Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1707         Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1708       Diags.Report(diag::err_drv_preamble_format);
1709     else {
1710       Opts.PrecompiledPreambleBytes.first = Bytes;
1711       Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1712     }
1713   }
1714 
1715   // Add macros from the command line.
1716   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1717          ie = Args.filtered_end(); it != ie; ++it) {
1718     if ((*it)->getOption().matches(OPT_D))
1719       Opts.addMacroDef((*it)->getValue(Args));
1720     else
1721       Opts.addMacroUndef((*it)->getValue(Args));
1722   }
1723 
1724   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1725 
1726   // Add the ordered list of -includes.
1727   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1728                                              OPT_include_pth),
1729          ie = Args.filtered_end(); it != ie; ++it) {
1730     const Arg *A = *it;
1731     // PCH is handled specially, we need to extra the original include path.
1732     if (A->getOption().matches(OPT_include_pch)) {
1733       std::string OriginalFile =
1734         ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1735       if (OriginalFile.empty())
1736         continue;
1737 
1738       Opts.Includes.push_back(OriginalFile);
1739     } else
1740       Opts.Includes.push_back(A->getValue(Args));
1741   }
1742 
1743   for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1744          ie = Args.filtered_end(); it != ie; ++it) {
1745     const Arg *A = *it;
1746     Opts.ChainedIncludes.push_back(A->getValue(Args));
1747   }
1748 
1749   // Include 'altivec.h' if -faltivec option present
1750   if (Args.hasArg(OPT_faltivec))
1751     Opts.Includes.push_back("altivec.h");
1752 
1753   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1754          ie = Args.filtered_end(); it != ie; ++it) {
1755     const Arg *A = *it;
1756     std::pair<llvm::StringRef,llvm::StringRef> Split =
1757       llvm::StringRef(A->getValue(Args)).split(';');
1758 
1759     if (Split.second.empty()) {
1760       Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1761       continue;
1762     }
1763 
1764     Opts.addRemappedFile(Split.first, Split.second);
1765   }
1766 
1767   if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1768     llvm::StringRef Name = A->getValue(Args);
1769     unsigned Library = llvm::StringSwitch<unsigned>(Name)
1770       .Case("libc++", ARCXX_libcxx)
1771       .Case("libstdc++", ARCXX_libstdcxx)
1772       .Case("none", ARCXX_nolib)
1773       .Default(~0U);
1774     if (Library == ~0U)
1775       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1776     else
1777       Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1778   }
1779 }
1780 
1781 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1782                                         ArgList &Args) {
1783   using namespace cc1options;
1784   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1785   Opts.ShowComments = Args.hasArg(OPT_C);
1786   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1787   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1788   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1789 }
1790 
1791 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1792   using namespace cc1options;
1793   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1794   Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1795   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1796   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1797   Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1798   Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1799 
1800   // Use the host triple if unspecified.
1801   if (Opts.Triple.empty())
1802     Opts.Triple = llvm::sys::getHostTriple();
1803 }
1804 
1805 //
1806 
1807 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1808                                         const char *const *ArgBegin,
1809                                         const char *const *ArgEnd,
1810                                         Diagnostic &Diags) {
1811   // Parse the arguments.
1812   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1813   unsigned MissingArgIndex, MissingArgCount;
1814   llvm::OwningPtr<InputArgList> Args(
1815     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1816 
1817   // Check for missing argument error.
1818   if (MissingArgCount)
1819     Diags.Report(diag::err_drv_missing_argument)
1820       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1821 
1822   // Issue errors on unknown arguments.
1823   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1824          ie = Args->filtered_end(); it != ie; ++it)
1825     Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1826 
1827   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1828   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1829   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1830   ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1831   // FIXME: We shouldn't have to pass the DashX option around here
1832   InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1833   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
1834   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1835   if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1836     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1837     if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1838       Res.getLangOpts().ObjCExceptions = 1;
1839   }
1840   // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1841   // PCH file and find the original header name. Remove the need to do that in
1842   // ParsePreprocessorArgs and remove the FileManager
1843   // parameters from the function and the "FileManager.h" #include.
1844   FileManager FileMgr(Res.getFileSystemOpts());
1845   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1846   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1847   ParseTargetArgs(Res.getTargetOpts(), *Args);
1848 }
1849