xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 6d5824f5bf90ddb66b65974c57cb2fa254db97a9) 
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   // Inlining is only derived.
149 
150   if (Opts.DataSections)
151     Res.push_back("-fdata-sections");
152   if (Opts.FunctionSections)
153     Res.push_back("-ffunction-sections");
154   if (Opts.AsmVerbose)
155     Res.push_back("-masm-verbose");
156   if (!Opts.CodeModel.empty()) {
157     Res.push_back("-mcode-model");
158     Res.push_back(Opts.CodeModel);
159   }
160   if (!Opts.CXAAtExit)
161     Res.push_back("-fno-use-cxa-atexit");
162   if (Opts.CXXCtorDtorAliases)
163     Res.push_back("-mconstructor-aliases");
164   if (!Opts.DebugPass.empty()) {
165     Res.push_back("-mdebug-pass");
166     Res.push_back(Opts.DebugPass);
167   }
168   if (Opts.DisableFPElim)
169     Res.push_back("-mdisable-fp-elim");
170   if (!Opts.FloatABI.empty()) {
171     Res.push_back("-mfloat-abi");
172     Res.push_back(Opts.FloatABI);
173   }
174   if (!Opts.LimitFloatPrecision.empty()) {
175     Res.push_back("-mlimit-float-precision");
176     Res.push_back(Opts.LimitFloatPrecision);
177   }
178   if (Opts.NoZeroInitializedInBSS)
179     Res.push_back("-mno-zero-initialized-bss");
180   switch (Opts.getObjCDispatchMethod()) {
181   case CodeGenOptions::Legacy:
182     break;
183   case CodeGenOptions::Mixed:
184     Res.push_back("-fobjc-dispatch-method=mixed");
185     break;
186   case CodeGenOptions::NonLegacy:
187     Res.push_back("-fobjc-dispatch-method=non-legacy");
188     break;
189   }
190   if (Opts.RelaxAll)
191     Res.push_back("-mrelax-all");
192   if (Opts.SoftFloat)
193     Res.push_back("-msoft-float");
194   if (Opts.UnwindTables)
195     Res.push_back("-munwind-tables");
196   if (Opts.RelocationModel != "pic") {
197     Res.push_back("-mrelocation-model");
198     Res.push_back(Opts.RelocationModel);
199   }
200   if (!Opts.VerifyModule)
201     Res.push_back("-disable-llvm-verifier");
202 }
203 
204 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
205                                        std::vector<std::string> &Res) {
206   if (Opts.IncludeSystemHeaders)
207     Res.push_back("-sys-header-deps");
208   if (Opts.UsePhonyTargets)
209     Res.push_back("-MP");
210   if (!Opts.OutputFile.empty()) {
211     Res.push_back("-dependency-file");
212     Res.push_back(Opts.OutputFile);
213   }
214   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
215     Res.push_back("-MT");
216     Res.push_back(Opts.Targets[i]);
217   }
218 }
219 
220 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
221                                  std::vector<std::string> &Res) {
222   if (Opts.IgnoreWarnings)
223     Res.push_back("-w");
224   if (Opts.NoRewriteMacros)
225     Res.push_back("-Wno-rewrite-macros");
226   if (Opts.Pedantic)
227     Res.push_back("-pedantic");
228   if (Opts.PedanticErrors)
229     Res.push_back("-pedantic-errors");
230   if (!Opts.ShowColumn)
231     Res.push_back("-fno-show-column");
232   if (!Opts.ShowLocation)
233     Res.push_back("-fno-show-source-location");
234   if (!Opts.ShowCarets)
235     Res.push_back("-fno-caret-diagnostics");
236   if (!Opts.ShowFixits)
237     Res.push_back("-fno-diagnostics-fixit-info");
238   if (Opts.ShowSourceRanges)
239     Res.push_back("-fdiagnostics-print-source-range-info");
240   if (Opts.ShowColors)
241     Res.push_back("-fcolor-diagnostics");
242   if (Opts.VerifyDiagnostics)
243     Res.push_back("-verify");
244   if (Opts.BinaryOutput)
245     Res.push_back("-fdiagnostics-binary");
246   if (Opts.ShowOptionNames)
247     Res.push_back("-fdiagnostics-show-option");
248   if (Opts.ShowCategories == 1)
249     Res.push_back("-fdiagnostics-show-category=id");
250   else if (Opts.ShowCategories == 2)
251     Res.push_back("-fdiagnostics-show-category=name");
252   if (Opts.ErrorLimit) {
253     Res.push_back("-ferror-limit");
254     Res.push_back(llvm::utostr(Opts.ErrorLimit));
255   }
256   if (Opts.MacroBacktraceLimit
257                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
258     Res.push_back("-fmacro-backtrace-limit");
259     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
260   }
261   if (Opts.TemplateBacktraceLimit
262                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
263     Res.push_back("-ftemplate-backtrace-limit");
264     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
265   }
266 
267   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
268     Res.push_back("-ftabstop");
269     Res.push_back(llvm::utostr(Opts.TabStop));
270   }
271   if (Opts.MessageLength) {
272     Res.push_back("-fmessage-length");
273     Res.push_back(llvm::utostr(Opts.MessageLength));
274   }
275   if (!Opts.DumpBuildInformation.empty()) {
276     Res.push_back("-dump-build-information");
277     Res.push_back(Opts.DumpBuildInformation);
278   }
279   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
280     Res.push_back("-W" + Opts.Warnings[i]);
281 }
282 
283 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
284   switch (Kind) {
285   case FrontendOptions::IK_None:              break;
286   case FrontendOptions::IK_AST:               return "ast";
287   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
288   case FrontendOptions::IK_C:                 return "c";
289   case FrontendOptions::IK_CXX:               return "c++";
290   case FrontendOptions::IK_ObjC:              return "objective-c";
291   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
292   case FrontendOptions::IK_OpenCL:            return "cl";
293   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
294   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
295   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
296   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
297   }
298 
299   llvm_unreachable("Unexpected language kind!");
300   return 0;
301 }
302 
303 static const char *getActionName(frontend::ActionKind Kind) {
304   switch (Kind) {
305   case frontend::PluginAction:
306   case frontend::InheritanceView:
307     llvm_unreachable("Invalid kind!");
308 
309   case frontend::ASTDump:                return "-ast-dump";
310   case frontend::ASTPrint:               return "-ast-print";
311   case frontend::ASTPrintXML:            return "-ast-print-xml";
312   case frontend::ASTView:                return "-ast-view";
313   case frontend::BoostCon:               return "-boostcon";
314   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
315   case frontend::DumpTokens:             return "-dump-tokens";
316   case frontend::EmitAssembly:           return "-S";
317   case frontend::EmitBC:                 return "-emit-llvm-bc";
318   case frontend::EmitHTML:               return "-emit-html";
319   case frontend::EmitLLVM:               return "-emit-llvm";
320   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
321   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
322   case frontend::EmitObj:                return "-emit-obj";
323   case frontend::FixIt:                  return "-fixit";
324   case frontend::GeneratePCH:            return "-emit-pch";
325   case frontend::GeneratePTH:            return "-emit-pth";
326   case frontend::InitOnly:               return "-init-only";
327   case frontend::ParseNoop:              return "-parse-noop";
328   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
329   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
330   case frontend::PrintDeclContext:       return "-print-decl-contexts";
331   case frontend::PrintPreprocessedInput: return "-E";
332   case frontend::RewriteMacros:          return "-rewrite-macros";
333   case frontend::RewriteObjC:            return "-rewrite-objc";
334   case frontend::RewriteTest:            return "-rewrite-test";
335   case frontend::RunAnalysis:            return "-analyze";
336   case frontend::RunPreprocessorOnly:    return "-Eonly";
337   }
338 
339   llvm_unreachable("Unexpected language kind!");
340   return 0;
341 }
342 
343 static void FrontendOptsToArgs(const FrontendOptions &Opts,
344                                std::vector<std::string> &Res) {
345   if (!Opts.DebugCodeCompletionPrinter)
346     Res.push_back("-no-code-completion-debug-printer");
347   if (Opts.DisableFree)
348     Res.push_back("-disable-free");
349   if (Opts.RelocatablePCH)
350     Res.push_back("-relocatable-pch");
351   if (Opts.ShowHelp)
352     Res.push_back("-help");
353   if (Opts.ShowMacrosInCodeCompletion)
354     Res.push_back("-code-completion-macros");
355   if (Opts.ShowCodePatternsInCodeCompletion)
356     Res.push_back("-code-completion-patterns");
357   if (Opts.ShowStats)
358     Res.push_back("-print-stats");
359   if (Opts.ShowTimers)
360     Res.push_back("-ftime-report");
361   if (Opts.ShowVersion)
362     Res.push_back("-version");
363 
364   bool NeedLang = false;
365   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
366     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
367         Opts.Inputs[i].first)
368       NeedLang = true;
369   if (NeedLang) {
370     Res.push_back("-x");
371     Res.push_back(getInputKindName(Opts.Inputs[0].first));
372   }
373   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
374     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
375            "Unable to represent this input vector!");
376     Res.push_back(Opts.Inputs[i].second);
377   }
378 
379   if (!Opts.OutputFile.empty()) {
380     Res.push_back("-o");
381     Res.push_back(Opts.OutputFile);
382   }
383   if (!Opts.ViewClassInheritance.empty()) {
384     Res.push_back("-cxx-inheritance-view");
385     Res.push_back(Opts.ViewClassInheritance);
386   }
387   if (!Opts.CodeCompletionAt.FileName.empty()) {
388     Res.push_back("-code-completion-at");
389     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
390                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
391                   llvm::utostr(Opts.CodeCompletionAt.Column));
392   }
393   if (Opts.ProgramAction != frontend::InheritanceView &&
394       Opts.ProgramAction != frontend::PluginAction)
395     Res.push_back(getActionName(Opts.ProgramAction));
396   if (!Opts.ActionName.empty()) {
397     Res.push_back("-plugin");
398     Res.push_back(Opts.ActionName);
399   }
400   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
401     Res.push_back("-load");
402     Res.push_back(Opts.Plugins[i]);
403   }
404   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
405     Res.push_back("-ast-merge");
406     Res.push_back(Opts.ASTMergeFiles[i]);
407   }
408   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
409     Res.push_back("-mllvm");
410     Res.push_back(Opts.LLVMArgs[i]);
411   }
412 }
413 
414 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
415                                    std::vector<std::string> &Res) {
416   if (Opts.Sysroot != "/") {
417     Res.push_back("-isysroot");
418     Res.push_back(Opts.Sysroot);
419   }
420 
421   /// User specified include entries.
422   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
423     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
424     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
425       llvm::report_fatal_error("Invalid option set!");
426     if (E.IsUserSupplied) {
427       if (E.Group == frontend::After) {
428         Res.push_back("-idirafter");
429       } else if (E.Group == frontend::Quoted) {
430         Res.push_back("-iquote");
431       } else if (E.Group == frontend::System) {
432         Res.push_back("-isystem");
433       } else {
434         assert(E.Group == frontend::Angled && "Invalid group!");
435         Res.push_back(E.IsFramework ? "-F" : "-I");
436       }
437     } else {
438       if (E.Group != frontend::Angled && E.Group != frontend::System)
439         llvm::report_fatal_error("Invalid option set!");
440       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
441                     "-iwithprefix");
442     }
443     Res.push_back(E.Path);
444   }
445 
446   if (!Opts.EnvIncPath.empty()) {
447     // FIXME: Provide an option for this, and move env detection to driver.
448     llvm::report_fatal_error("Not yet implemented!");
449   }
450   if (!Opts.CEnvIncPath.empty()) {
451     // FIXME: Provide an option for this, and move env detection to driver.
452     llvm::report_fatal_error("Not yet implemented!");
453   }
454   if (!Opts.ObjCEnvIncPath.empty()) {
455     // FIXME: Provide an option for this, and move env detection to driver.
456     llvm::report_fatal_error("Not yet implemented!");
457   }
458   if (!Opts.CXXEnvIncPath.empty()) {
459     // FIXME: Provide an option for this, and move env detection to driver.
460     llvm::report_fatal_error("Not yet implemented!");
461   }
462   if (!Opts.ObjCXXEnvIncPath.empty()) {
463     // FIXME: Provide an option for this, and move env detection to driver.
464     llvm::report_fatal_error("Not yet implemented!");
465   }
466   if (!Opts.ResourceDir.empty()) {
467     Res.push_back("-resource-dir");
468     Res.push_back(Opts.ResourceDir);
469   }
470   if (!Opts.UseStandardIncludes)
471     Res.push_back("-nostdinc");
472   if (!Opts.UseStandardCXXIncludes)
473     Res.push_back("-nostdinc++");
474   if (Opts.Verbose)
475     Res.push_back("-v");
476 }
477 
478 static void LangOptsToArgs(const LangOptions &Opts,
479                            std::vector<std::string> &Res) {
480   LangOptions DefaultLangOpts;
481 
482   // FIXME: Need to set -std to get all the implicit options.
483 
484   // FIXME: We want to only pass options relative to the defaults, which
485   // requires constructing a target. :(
486   //
487   // It would be better to push the all target specific choices into the driver,
488   // so that everything below that was more uniform.
489 
490   if (Opts.Trigraphs)
491     Res.push_back("-trigraphs");
492   // Implicit based on the input kind:
493   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
494   // Implicit based on the input language standard:
495   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
496   if (Opts.DollarIdents)
497     Res.push_back("-fdollars-in-identifiers");
498   if (Opts.GNUMode && !Opts.GNUKeywords)
499     Res.push_back("-fno-gnu-keywords");
500   if (!Opts.GNUMode && Opts.GNUKeywords)
501     Res.push_back("-fgnu-keywords");
502   if (Opts.Microsoft)
503     Res.push_back("-fms-extensions");
504   if (Opts.ObjCNonFragileABI)
505     Res.push_back("-fobjc-nonfragile-abi");
506   if (Opts.ObjCNonFragileABI2)
507     Res.push_back("-fobjc-nonfragile-abi2");
508   // NoInline is implicit.
509   if (!Opts.CXXOperatorNames)
510     Res.push_back("-fno-operator-names");
511   if (Opts.PascalStrings)
512     Res.push_back("-fpascal-strings");
513   if (Opts.CatchUndefined)
514     Res.push_back("-fcatch-undefined-behavior");
515   if (Opts.WritableStrings)
516     Res.push_back("-fwritable-strings");
517   if (Opts.ConstStrings)
518     Res.push_back("-Wwrite-strings");
519   if (!Opts.LaxVectorConversions)
520     Res.push_back("-fno-lax-vector-conversions");
521   if (Opts.AltiVec)
522     Res.push_back("-faltivec");
523   if (Opts.Exceptions)
524     Res.push_back("-fexceptions");
525   if (Opts.SjLjExceptions)
526     Res.push_back("-fsjlj-exceptions");
527   if (!Opts.RTTI)
528     Res.push_back("-fno-rtti");
529   if (!Opts.NeXTRuntime)
530     Res.push_back("-fgnu-runtime");
531   if (Opts.Freestanding)
532     Res.push_back("-ffreestanding");
533   if (Opts.NoBuiltin)
534     Res.push_back("-fno-builtin");
535   if (!Opts.AssumeSaneOperatorNew)
536     Res.push_back("-fno-assume-sane-operator-new");
537   if (!Opts.ThreadsafeStatics)
538     Res.push_back("-fno-threadsafe-statics");
539   if (Opts.POSIXThreads)
540     Res.push_back("-pthread");
541   if (Opts.Blocks)
542     Res.push_back("-fblocks");
543   if (Opts.EmitAllDecls)
544     Res.push_back("-femit-all-decls");
545   if (Opts.MathErrno)
546     Res.push_back("-fmath-errno");
547   if (Opts.OverflowChecking)
548     Res.push_back("-ftrapv");
549   if (Opts.HeinousExtensions)
550     Res.push_back("-fheinous-gnu-extensions");
551   // Optimize is implicit.
552   // OptimizeSize is implicit.
553   if (Opts.Static)
554     Res.push_back("-static-define");
555   if (Opts.DumpRecordLayouts)
556     Res.push_back("-fdump-record-layouts");
557   if (Opts.DumpVTableLayouts)
558     Res.push_back("-fdump-vtable-layouts");
559   if (Opts.NoBitFieldTypeAlign)
560     Res.push_back("-fno-bitfield-type-alignment");
561   if (Opts.SjLjExceptions)
562     Res.push_back("-fsjlj-exceptions");
563   if (Opts.PICLevel) {
564     Res.push_back("-pic-level");
565     Res.push_back(llvm::utostr(Opts.PICLevel));
566   }
567   if (Opts.ObjCGCBitmapPrint)
568     Res.push_back("-print-ivar-layout");
569   if (Opts.NoConstantCFStrings)
570     Res.push_back("-fno-constant-cfstrings");
571   if (!Opts.AccessControl)
572     Res.push_back("-fno-access-control");
573   if (!Opts.CharIsSigned)
574     Res.push_back("-fno-signed-char");
575   if (Opts.ShortWChar)
576     Res.push_back("-fshort-wchar");
577   if (!Opts.ElideConstructors)
578     Res.push_back("-fno-elide-constructors");
579   if (Opts.getGCMode() != LangOptions::NonGC) {
580     if (Opts.getGCMode() == LangOptions::HybridGC) {
581       Res.push_back("-fobjc-gc");
582     } else {
583       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
584       Res.push_back("-fobjc-gc-only");
585     }
586   }
587   if (Opts.getVisibilityMode() != LangOptions::Default) {
588     Res.push_back("-fvisibility");
589     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
590       Res.push_back("hidden");
591     } else {
592       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
593              "Invalid visibility!");
594       Res.push_back("protected");
595     }
596   }
597   if (Opts.getStackProtectorMode() != 0) {
598     Res.push_back("-stack-protector");
599     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
600   }
601   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
602     Res.push_back("-ftemplate-depth");
603     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
604   }
605   if (!Opts.ObjCConstantStringClass.empty()) {
606     Res.push_back("-fconstant-string-class");
607     Res.push_back(Opts.ObjCConstantStringClass);
608   }
609 }
610 
611 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
612                                    std::vector<std::string> &Res) {
613   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
614     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
615                   Opts.Macros[i].first);
616   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
617     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
618     Res.push_back("-include");
619     Res.push_back(Opts.Includes[i]);
620   }
621   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
622     Res.push_back("-imacros");
623     Res.push_back(Opts.MacroIncludes[i]);
624   }
625   if (!Opts.UsePredefines)
626     Res.push_back("-undef");
627   if (Opts.DetailedRecord)
628     Res.push_back("-detailed-preprocessing-record");
629   if (!Opts.ImplicitPCHInclude.empty()) {
630     Res.push_back("-include-pch");
631     Res.push_back(Opts.ImplicitPCHInclude);
632   }
633   if (!Opts.ImplicitPTHInclude.empty()) {
634     Res.push_back("-include-pth");
635     Res.push_back(Opts.ImplicitPTHInclude);
636   }
637   if (!Opts.TokenCache.empty()) {
638     if (Opts.ImplicitPTHInclude.empty()) {
639       Res.push_back("-token-cache");
640       Res.push_back(Opts.TokenCache);
641     } else
642       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
643              "Unsupported option combination!");
644   }
645   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
646     Res.push_back("-remap-file");
647     Res.push_back(Opts.RemappedFiles[i].first + ";" +
648                   Opts.RemappedFiles[i].second);
649   }
650 }
651 
652 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
653                                          std::vector<std::string> &Res) {
654   if (!Opts.ShowCPP && !Opts.ShowMacros)
655     llvm::report_fatal_error("Invalid option combination!");
656 
657   if (Opts.ShowCPP && Opts.ShowMacros)
658     Res.push_back("-dD");
659   else if (!Opts.ShowCPP && Opts.ShowMacros)
660     Res.push_back("-dM");
661 
662   if (!Opts.ShowLineMarkers)
663     Res.push_back("-P");
664   if (Opts.ShowComments)
665     Res.push_back("-C");
666   if (Opts.ShowMacroComments)
667     Res.push_back("-CC");
668 }
669 
670 static void TargetOptsToArgs(const TargetOptions &Opts,
671                              std::vector<std::string> &Res) {
672   Res.push_back("-triple");
673   Res.push_back(Opts.Triple);
674   if (!Opts.CPU.empty()) {
675     Res.push_back("-target-cpu");
676     Res.push_back(Opts.CPU);
677   }
678   if (!Opts.ABI.empty()) {
679     Res.push_back("-target-abi");
680     Res.push_back(Opts.ABI);
681   }
682   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
683     Res.push_back("-target-feature");
684     Res.push_back(Opts.Features[i]);
685   }
686 }
687 
688 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
689   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
690   CodeGenOptsToArgs(getCodeGenOpts(), Res);
691   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
692   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
693   FrontendOptsToArgs(getFrontendOpts(), Res);
694   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
695   LangOptsToArgs(getLangOpts(), Res);
696   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
697   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
698   TargetOptsToArgs(getTargetOpts(), Res);
699 }
700 
701 //===----------------------------------------------------------------------===//
702 // Deserialization (to args)
703 //===----------------------------------------------------------------------===//
704 
705 using namespace clang::driver;
706 using namespace clang::driver::cc1options;
707 
708 //
709 
710 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
711                               Diagnostic &Diags) {
712   using namespace cc1options;
713 
714   Opts.AnalysisList.clear();
715 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
716   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
717 #include "clang/Frontend/Analyses.def"
718 
719   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
720     llvm::StringRef Name = A->getValue(Args);
721     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
722 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
723       .Case(CMDFLAG, NAME##Model)
724 #include "clang/Frontend/Analyses.def"
725       .Default(NumStores);
726     // FIXME: Error handling.
727     if (Value == NumStores)
728       Diags.Report(diag::err_drv_invalid_value)
729         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
730     else
731       Opts.AnalysisStoreOpt = Value;
732   }
733 
734   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
735     llvm::StringRef Name = A->getValue(Args);
736     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
737 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
738       .Case(CMDFLAG, NAME##Model)
739 #include "clang/Frontend/Analyses.def"
740       .Default(NumConstraints);
741     // FIXME: Error handling.
742     if (Value == NumConstraints)
743       Diags.Report(diag::err_drv_invalid_value)
744         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
745     else
746       Opts.AnalysisConstraintsOpt = Value;
747   }
748 
749   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
750     llvm::StringRef Name = A->getValue(Args);
751     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
752 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
753       .Case(CMDFLAG, PD_##NAME)
754 #include "clang/Frontend/Analyses.def"
755       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
756     // FIXME: Error handling.
757     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
758       Diags.Report(diag::err_drv_invalid_value)
759         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
760     else
761       Opts.AnalysisDiagOpt = Value;
762   }
763 
764   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
765   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
766   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
767   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
768   Opts.AnalyzeNestedBlocks =
769     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
770   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
771   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
772   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
773   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
774   Opts.EnableExperimentalInternalChecks =
775     Args.hasArg(OPT_analyzer_experimental_internal_checks);
776   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
777   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
778   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
779   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
780 }
781 
782 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
783                              Diagnostic &Diags) {
784   using namespace cc1options;
785   // -Os implies -O2
786   if (Args.hasArg(OPT_Os))
787     Opts.OptimizationLevel = 2;
788   else {
789     Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
790     if (Opts.OptimizationLevel > 3) {
791       Diags.Report(diag::err_drv_invalid_value)
792         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
793       Opts.OptimizationLevel = 3;
794     }
795   }
796 
797   // We must always run at least the always inlining pass.
798   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
799     : CodeGenOptions::OnlyAlwaysInlining;
800 
801   Opts.DebugInfo = Args.hasArg(OPT_g);
802   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
803   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
804   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
805   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
806   Opts.NoCommon = Args.hasArg(OPT_fno_common);
807   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
808   Opts.OptimizeSize = Args.hasArg(OPT_Os);
809   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
810                             Args.hasArg(OPT_ffreestanding));
811   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
812 
813   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
814   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
815   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
816   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
817   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
818   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
819   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
820   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
821   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
822   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
823   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
824   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
825   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
826 
827   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
828   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
829 
830   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
831   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
832 
833   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
834     llvm::StringRef Name = A->getValue(Args);
835     unsigned Method = llvm::StringSwitch<unsigned>(Name)
836       .Case("legacy", CodeGenOptions::Legacy)
837       .Case("non-legacy", CodeGenOptions::NonLegacy)
838       .Case("mixed", CodeGenOptions::Mixed)
839       .Default(~0U);
840     if (Method == ~0U)
841       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
842     else
843       Opts.ObjCDispatchMethod = Method;
844   }
845 }
846 
847 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
848                                       ArgList &Args) {
849   using namespace cc1options;
850   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
851   Opts.Targets = Args.getAllArgValues(OPT_MT);
852   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
853   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
854 }
855 
856 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
857                                 Diagnostic &Diags) {
858   using namespace cc1options;
859   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
860   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
861   Opts.Pedantic = Args.hasArg(OPT_pedantic);
862   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
863   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
864   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
865   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
866   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
867   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
868   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
869 
870   llvm::StringRef ShowCategory =
871     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
872   if (ShowCategory == "none")
873     Opts.ShowCategories = 0;
874   else if (ShowCategory == "id")
875     Opts.ShowCategories = 1;
876   else if (ShowCategory == "name")
877     Opts.ShowCategories = 2;
878   else
879     Diags.Report(diag::err_drv_invalid_value)
880       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
881       << ShowCategory;
882 
883   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
884   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
885   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
886   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
887   Opts.MacroBacktraceLimit
888     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
889                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
890   Opts.TemplateBacktraceLimit
891     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
892                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
893                          Diags);
894   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
895                                     DiagnosticOptions::DefaultTabStop, Diags);
896   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
897     Diags.Report(diag::warn_ignoring_ftabstop_value)
898       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
899     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
900   }
901   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
902   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
903   Opts.Warnings = Args.getAllArgValues(OPT_W);
904 }
905 
906 static FrontendOptions::InputKind
907 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
908   using namespace cc1options;
909   Opts.ProgramAction = frontend::ParseSyntaxOnly;
910   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
911     switch (A->getOption().getID()) {
912     default:
913       assert(0 && "Invalid option in group!");
914     case OPT_ast_dump:
915       Opts.ProgramAction = frontend::ASTDump; break;
916     case OPT_ast_print:
917       Opts.ProgramAction = frontend::ASTPrint; break;
918     case OPT_ast_print_xml:
919       Opts.ProgramAction = frontend::ASTPrintXML; break;
920     case OPT_ast_view:
921       Opts.ProgramAction = frontend::ASTView; break;
922     case OPT_boostcon:
923       Opts.ProgramAction = frontend::BoostCon; break;
924     case OPT_dump_raw_tokens:
925       Opts.ProgramAction = frontend::DumpRawTokens; break;
926     case OPT_dump_tokens:
927       Opts.ProgramAction = frontend::DumpTokens; break;
928     case OPT_S:
929       Opts.ProgramAction = frontend::EmitAssembly; break;
930     case OPT_emit_llvm_bc:
931       Opts.ProgramAction = frontend::EmitBC; break;
932     case OPT_emit_html:
933       Opts.ProgramAction = frontend::EmitHTML; break;
934     case OPT_emit_llvm:
935       Opts.ProgramAction = frontend::EmitLLVM; break;
936     case OPT_emit_llvm_only:
937       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
938     case OPT_emit_codegen_only:
939       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
940     case OPT_emit_obj:
941       Opts.ProgramAction = frontend::EmitObj; break;
942     case OPT_fixit_EQ:
943       Opts.FixItSuffix = A->getValue(Args);
944       // fall-through!
945     case OPT_fixit:
946       Opts.ProgramAction = frontend::FixIt; break;
947     case OPT_emit_pch:
948       Opts.ProgramAction = frontend::GeneratePCH; break;
949     case OPT_emit_pth:
950       Opts.ProgramAction = frontend::GeneratePTH; break;
951     case OPT_init_only:
952       Opts.ProgramAction = frontend::InitOnly; break;
953     case OPT_parse_noop:
954       Opts.ProgramAction = frontend::ParseNoop; break;
955     case OPT_parse_print_callbacks:
956       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
957     case OPT_fsyntax_only:
958       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
959     case OPT_print_decl_contexts:
960       Opts.ProgramAction = frontend::PrintDeclContext; break;
961     case OPT_E:
962       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
963     case OPT_rewrite_macros:
964       Opts.ProgramAction = frontend::RewriteMacros; break;
965     case OPT_rewrite_objc:
966       Opts.ProgramAction = frontend::RewriteObjC; break;
967     case OPT_rewrite_test:
968       Opts.ProgramAction = frontend::RewriteTest; break;
969     case OPT_analyze:
970       Opts.ProgramAction = frontend::RunAnalysis; break;
971     case OPT_Eonly:
972       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
973     }
974   }
975   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
976     Opts.ProgramAction = frontend::PluginAction;
977     Opts.ActionName = A->getValue(Args);
978   }
979 
980   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
981     Opts.CodeCompletionAt =
982       ParsedSourceLocation::FromString(A->getValue(Args));
983     if (Opts.CodeCompletionAt.FileName.empty())
984       Diags.Report(diag::err_drv_invalid_value)
985         << A->getAsString(Args) << A->getValue(Args);
986   }
987   Opts.DebugCodeCompletionPrinter =
988     !Args.hasArg(OPT_no_code_completion_debug_printer);
989   Opts.DisableFree = Args.hasArg(OPT_disable_free);
990 
991   Opts.OutputFile = Args.getLastArgValue(OPT_o);
992   Opts.Plugins = Args.getAllArgValues(OPT_load);
993   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
994   Opts.ShowHelp = Args.hasArg(OPT_help);
995   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
996   Opts.ShowCodePatternsInCodeCompletion
997     = Args.hasArg(OPT_code_completion_patterns);
998   Opts.ShowStats = Args.hasArg(OPT_print_stats);
999   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1000   Opts.ShowVersion = Args.hasArg(OPT_version);
1001   Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1002   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1003   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1004 
1005   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
1006   if (const Arg *A = Args.getLastArg(OPT_x)) {
1007     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
1008       .Case("c", FrontendOptions::IK_C)
1009       .Case("cl", FrontendOptions::IK_OpenCL)
1010       .Case("c", FrontendOptions::IK_C)
1011       .Case("cl", FrontendOptions::IK_OpenCL)
1012       .Case("c++", FrontendOptions::IK_CXX)
1013       .Case("objective-c", FrontendOptions::IK_ObjC)
1014       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
1015       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
1016       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
1017       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
1018       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
1019       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1020       .Case("c-header", FrontendOptions::IK_C)
1021       .Case("objective-c-header", FrontendOptions::IK_ObjC)
1022       .Case("c++-header", FrontendOptions::IK_CXX)
1023       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1024       .Case("ast", FrontendOptions::IK_AST)
1025       .Default(FrontendOptions::IK_None);
1026     if (DashX == FrontendOptions::IK_None)
1027       Diags.Report(diag::err_drv_invalid_value)
1028         << A->getAsString(Args) << A->getValue(Args);
1029   }
1030 
1031   // '-' is the default input if none is given.
1032   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1033   Opts.Inputs.clear();
1034   if (Inputs.empty())
1035     Inputs.push_back("-");
1036   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1037     FrontendOptions::InputKind IK = DashX;
1038     if (IK == FrontendOptions::IK_None) {
1039       IK = FrontendOptions::getInputKindForExtension(
1040         llvm::StringRef(Inputs[i]).rsplit('.').second);
1041       // FIXME: Remove this hack.
1042       if (i == 0)
1043         DashX = IK;
1044     }
1045     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1046   }
1047 
1048   return DashX;
1049 }
1050 
1051 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1052                                                  void *MainAddr) {
1053   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1054 
1055   if (!P.isEmpty()) {
1056     P.eraseComponent();  // Remove /clang from foo/bin/clang
1057     P.eraseComponent();  // Remove /bin   from foo/bin
1058 
1059     // Get foo/lib/clang/<version>/include
1060     P.appendComponent("lib");
1061     P.appendComponent("clang");
1062     P.appendComponent(CLANG_VERSION_STRING);
1063   }
1064 
1065   return P.str();
1066 }
1067 
1068 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1069   using namespace cc1options;
1070   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1071   Opts.Verbose = Args.hasArg(OPT_v);
1072   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1073   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1074   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1075   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1076 
1077   // Add -I... and -F... options in order.
1078   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1079          ie = Args.filtered_end(); it != ie; ++it)
1080     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1081                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1082 
1083   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1084   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1085   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1086                                              OPT_iwithprefixbefore),
1087          ie = Args.filtered_end(); it != ie; ++it) {
1088     if (it->getOption().matches(OPT_iprefix))
1089       Prefix = it->getValue(Args);
1090     else if (it->getOption().matches(OPT_iwithprefix))
1091       Opts.AddPath(Prefix.str() + it->getValue(Args),
1092                    frontend::System, false, false);
1093     else
1094       Opts.AddPath(Prefix.str() + it->getValue(Args),
1095                    frontend::Angled, false, false);
1096   }
1097 
1098   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1099          ie = Args.filtered_end(); it != ie; ++it)
1100     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1101   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1102          ie = Args.filtered_end(); it != ie; ++it)
1103     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1104   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1105          ie = Args.filtered_end(); it != ie; ++it)
1106     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1107 
1108   // FIXME: Need options for the various environment variables!
1109 }
1110 
1111 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1112                           FrontendOptions::InputKind IK,
1113                           Diagnostic &Diags) {
1114   // FIXME: Cleanup per-file based stuff.
1115 
1116   // Set some properties which depend soley on the input kind; it would be nice
1117   // to move these to the language standard, and have the driver resolve the
1118   // input kind + language standard.
1119   if (IK == FrontendOptions::IK_Asm) {
1120     Opts.AsmPreprocessor = 1;
1121   } else if (IK == FrontendOptions::IK_ObjC ||
1122              IK == FrontendOptions::IK_ObjCXX ||
1123              IK == FrontendOptions::IK_PreprocessedObjC ||
1124              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1125     Opts.ObjC1 = Opts.ObjC2 = 1;
1126   }
1127 
1128   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1129   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1130     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1131 #define LANGSTANDARD(id, name, desc, features) \
1132       .Case(name, LangStandard::lang_##id)
1133 #include "clang/Frontend/LangStandards.def"
1134       .Default(LangStandard::lang_unspecified);
1135     if (LangStd == LangStandard::lang_unspecified)
1136       Diags.Report(diag::err_drv_invalid_value)
1137         << A->getAsString(Args) << A->getValue(Args);
1138   }
1139 
1140   if (LangStd == LangStandard::lang_unspecified) {
1141     // Based on the base language, pick one.
1142     switch (IK) {
1143     case FrontendOptions::IK_None:
1144     case FrontendOptions::IK_AST:
1145       assert(0 && "Invalid input kind!");
1146     case FrontendOptions::IK_OpenCL:
1147       LangStd = LangStandard::lang_opencl;
1148       break;
1149     case FrontendOptions::IK_Asm:
1150     case FrontendOptions::IK_C:
1151     case FrontendOptions::IK_PreprocessedC:
1152     case FrontendOptions::IK_ObjC:
1153     case FrontendOptions::IK_PreprocessedObjC:
1154       LangStd = LangStandard::lang_gnu99;
1155       break;
1156     case FrontendOptions::IK_CXX:
1157     case FrontendOptions::IK_PreprocessedCXX:
1158     case FrontendOptions::IK_ObjCXX:
1159     case FrontendOptions::IK_PreprocessedObjCXX:
1160       LangStd = LangStandard::lang_gnucxx98;
1161       break;
1162     }
1163   }
1164 
1165   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1166   Opts.BCPLComment = Std.hasBCPLComments();
1167   Opts.C99 = Std.isC99();
1168   Opts.CPlusPlus = Std.isCPlusPlus();
1169   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1170   Opts.Digraphs = Std.hasDigraphs();
1171   Opts.GNUMode = Std.isGNUMode();
1172   Opts.GNUInline = !Std.isC99();
1173   Opts.HexFloats = Std.hasHexFloats();
1174   Opts.ImplicitInt = Std.hasImplicitInt();
1175 
1176   // OpenCL has some additional defaults.
1177   if (LangStd == LangStandard::lang_opencl) {
1178     Opts.OpenCL = 1;
1179     Opts.AltiVec = 1;
1180     Opts.CXXOperatorNames = 1;
1181     Opts.LaxVectorConversions = 1;
1182   }
1183 
1184   // OpenCL and C++ both have bool, true, false keywords.
1185   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1186 
1187   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1188   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1189   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1190   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1191   // name, as it doesn't seem a useful distinction.
1192   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1193                                   Opts.GNUMode);
1194 
1195   if (Opts.CPlusPlus)
1196     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1197 
1198   if (Args.hasArg(OPT_fobjc_gc_only))
1199     Opts.setGCMode(LangOptions::GCOnly);
1200   else if (Args.hasArg(OPT_fobjc_gc))
1201     Opts.setGCMode(LangOptions::HybridGC);
1202 
1203   if (Args.hasArg(OPT_print_ivar_layout))
1204     Opts.ObjCGCBitmapPrint = 1;
1205   if (Args.hasArg(OPT_fno_constant_cfstrings))
1206     Opts.NoConstantCFStrings = 1;
1207 
1208   if (Args.hasArg(OPT_faltivec))
1209     Opts.AltiVec = 1;
1210 
1211   if (Args.hasArg(OPT_pthread))
1212     Opts.POSIXThreads = 1;
1213 
1214   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1215   if (Vis == "default")
1216     Opts.setVisibilityMode(LangOptions::Default);
1217   else if (Vis == "hidden")
1218     Opts.setVisibilityMode(LangOptions::Hidden);
1219   else if (Vis == "protected")
1220     Opts.setVisibilityMode(LangOptions::Protected);
1221   else
1222     Diags.Report(diag::err_drv_invalid_value)
1223       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1224 
1225   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1226 
1227   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1228   // is specified, or -std is set to a conforming mode.
1229   Opts.Trigraphs = !Opts.GNUMode;
1230   if (Args.hasArg(OPT_trigraphs))
1231     Opts.Trigraphs = 1;
1232 
1233   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1234                                    OPT_fno_dollars_in_identifiers,
1235                                    !Opts.AsmPreprocessor);
1236   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1237   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1238   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1239   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1240   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1241     Opts.LaxVectorConversions = 0;
1242   if (Args.hasArg(OPT_fno_threadsafe_statics))
1243     Opts.ThreadsafeStatics = 0;
1244   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1245   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1246   Opts.Blocks = Args.hasArg(OPT_fblocks);
1247   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1248   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1249   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1250   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1251   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1252   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1253   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1254   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1255   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1256   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1257                                                Diags);
1258   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1259   Opts.ObjCConstantStringClass =
1260     Args.getLastArgValue(OPT_fconstant_string_class);
1261   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1262   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1263   if (Opts.ObjCNonFragileABI2)
1264     Opts.ObjCNonFragileABI = true;
1265   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1266   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1267   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1268   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1269   Opts.Static = Args.hasArg(OPT_static_define);
1270   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1271   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1272   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1273   Opts.OptimizeSize = 0;
1274 
1275   // FIXME: Eliminate this dependency.
1276   unsigned Opt =
1277     Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1278   Opts.Optimize = Opt != 0;
1279 
1280   // This is the __NO_INLINE__ define, which just depends on things like the
1281   // optimization level and -fno-inline, not actually whether the backend has
1282   // inlining enabled.
1283   //
1284   // FIXME: This is affected by other options (-fno-inline).
1285   Opts.NoInline = !Opt;
1286 
1287   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1288   switch (SSP) {
1289   default:
1290     Diags.Report(diag::err_drv_invalid_value)
1291       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1292     break;
1293   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1294   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1295   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1296   }
1297 }
1298 
1299 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1300                                   Diagnostic &Diags) {
1301   using namespace cc1options;
1302   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1303   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1304   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1305       Opts.TokenCache = A->getValue(Args);
1306   else
1307     Opts.TokenCache = Opts.ImplicitPTHInclude;
1308   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1309   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1310   // Add macros from the command line.
1311   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1312          ie = Args.filtered_end(); it != ie; ++it) {
1313     if (it->getOption().matches(OPT_D))
1314       Opts.addMacroDef(it->getValue(Args));
1315     else
1316       Opts.addMacroUndef(it->getValue(Args));
1317   }
1318 
1319   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1320 
1321   // Add the ordered list of -includes.
1322   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1323                                              OPT_include_pth),
1324          ie = Args.filtered_end(); it != ie; ++it) {
1325     // PCH is handled specially, we need to extra the original include path.
1326     if (it->getOption().matches(OPT_include_pch)) {
1327       std::string OriginalFile =
1328         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1329       if (OriginalFile.empty())
1330         continue;
1331 
1332       Opts.Includes.push_back(OriginalFile);
1333     } else
1334       Opts.Includes.push_back(it->getValue(Args));
1335   }
1336 
1337   // Include 'altivec.h' if -faltivec option present
1338   if (Args.hasArg(OPT_faltivec))
1339     Opts.Includes.push_back("altivec.h");
1340 
1341   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1342          ie = Args.filtered_end(); it != ie; ++it) {
1343     std::pair<llvm::StringRef,llvm::StringRef> Split =
1344       llvm::StringRef(it->getValue(Args)).split(';');
1345 
1346     if (Split.second.empty()) {
1347       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1348       continue;
1349     }
1350 
1351     Opts.addRemappedFile(Split.first, Split.second);
1352   }
1353 }
1354 
1355 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1356                                         ArgList &Args) {
1357   using namespace cc1options;
1358   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1359   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1360   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1361   Opts.ShowComments = Args.hasArg(OPT_C);
1362   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1363 }
1364 
1365 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1366   using namespace cc1options;
1367   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1368   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1369   Opts.Triple = Args.getLastArgValue(OPT_triple);
1370   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1371 
1372   // Use the host triple if unspecified.
1373   if (Opts.Triple.empty())
1374     Opts.Triple = llvm::sys::getHostTriple();
1375 }
1376 
1377 //
1378 
1379 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1380                                         const char **ArgBegin,
1381                                         const char **ArgEnd,
1382                                         Diagnostic &Diags) {
1383   // Parse the arguments.
1384   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1385   unsigned MissingArgIndex, MissingArgCount;
1386   llvm::OwningPtr<InputArgList> Args(
1387     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1388 
1389   // Check for missing argument error.
1390   if (MissingArgCount)
1391     Diags.Report(diag::err_drv_missing_argument)
1392       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1393 
1394   // Issue errors on unknown arguments.
1395   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1396          ie = Args->filtered_end(); it != ie; ++it)
1397     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1398 
1399   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1400   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1401   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1402   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1403   FrontendOptions::InputKind DashX =
1404     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1405   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1406   if (DashX != FrontendOptions::IK_AST)
1407     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1408   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1409   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1410   ParseTargetArgs(Res.getTargetOpts(), *Args);
1411 }
1412