xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision af82e3510b768f2f194eaebdea5924f4f506caed) 
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.OmitLeafFramePointer)
136     Res.push_back("-momit-leaf-frame-pointer");
137   if (Opts.OptimizeSize) {
138     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
139     Res.push_back("-Os");
140   } else if (Opts.OptimizationLevel != 0)
141     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
142   if (!Opts.MainFileName.empty()) {
143     Res.push_back("-main-file-name");
144     Res.push_back(Opts.MainFileName);
145   }
146   // SimplifyLibCalls is only derived.
147   // TimePasses is only derived.
148   // UnitAtATime is unused.
149   // UnrollLoops is only derived.
150   // Inlining is only derived.
151 
152   if (Opts.DataSections)
153     Res.push_back("-fdata-sections");
154   if (Opts.FunctionSections)
155     Res.push_back("-ffunction-sections");
156   if (Opts.AsmVerbose)
157     Res.push_back("-masm-verbose");
158   if (!Opts.CodeModel.empty()) {
159     Res.push_back("-mcode-model");
160     Res.push_back(Opts.CodeModel);
161   }
162   if (!Opts.CXAAtExit)
163     Res.push_back("-fno-use-cxa-atexit");
164   if (Opts.CXXCtorDtorAliases)
165     Res.push_back("-mconstructor-aliases");
166   if (!Opts.DebugPass.empty()) {
167     Res.push_back("-mdebug-pass");
168     Res.push_back(Opts.DebugPass);
169   }
170   if (Opts.DisableFPElim)
171     Res.push_back("-mdisable-fp-elim");
172   if (!Opts.FloatABI.empty()) {
173     Res.push_back("-mfloat-abi");
174     Res.push_back(Opts.FloatABI);
175   }
176   if (!Opts.LimitFloatPrecision.empty()) {
177     Res.push_back("-mlimit-float-precision");
178     Res.push_back(Opts.LimitFloatPrecision);
179   }
180   if (Opts.NoZeroInitializedInBSS)
181     Res.push_back("-mno-zero-initialized-bss");
182   switch (Opts.getObjCDispatchMethod()) {
183   case CodeGenOptions::Legacy:
184     break;
185   case CodeGenOptions::Mixed:
186     Res.push_back("-fobjc-dispatch-method=mixed");
187     break;
188   case CodeGenOptions::NonLegacy:
189     Res.push_back("-fobjc-dispatch-method=non-legacy");
190     break;
191   }
192   if (Opts.RelaxAll)
193     Res.push_back("-mrelax-all");
194   if (Opts.SoftFloat)
195     Res.push_back("-msoft-float");
196   if (Opts.UnwindTables)
197     Res.push_back("-munwind-tables");
198   if (Opts.RelocationModel != "pic") {
199     Res.push_back("-mrelocation-model");
200     Res.push_back(Opts.RelocationModel);
201   }
202   if (!Opts.VerifyModule)
203     Res.push_back("-disable-llvm-verifier");
204 }
205 
206 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
207                                        std::vector<std::string> &Res) {
208   if (Opts.IncludeSystemHeaders)
209     Res.push_back("-sys-header-deps");
210   if (Opts.UsePhonyTargets)
211     Res.push_back("-MP");
212   if (!Opts.OutputFile.empty()) {
213     Res.push_back("-dependency-file");
214     Res.push_back(Opts.OutputFile);
215   }
216   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
217     Res.push_back("-MT");
218     Res.push_back(Opts.Targets[i]);
219   }
220 }
221 
222 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
223                                  std::vector<std::string> &Res) {
224   if (Opts.IgnoreWarnings)
225     Res.push_back("-w");
226   if (Opts.NoRewriteMacros)
227     Res.push_back("-Wno-rewrite-macros");
228   if (Opts.Pedantic)
229     Res.push_back("-pedantic");
230   if (Opts.PedanticErrors)
231     Res.push_back("-pedantic-errors");
232   if (!Opts.ShowColumn)
233     Res.push_back("-fno-show-column");
234   if (!Opts.ShowLocation)
235     Res.push_back("-fno-show-source-location");
236   if (!Opts.ShowCarets)
237     Res.push_back("-fno-caret-diagnostics");
238   if (!Opts.ShowFixits)
239     Res.push_back("-fno-diagnostics-fixit-info");
240   if (Opts.ShowSourceRanges)
241     Res.push_back("-fdiagnostics-print-source-range-info");
242   if (Opts.ShowColors)
243     Res.push_back("-fcolor-diagnostics");
244   if (Opts.VerifyDiagnostics)
245     Res.push_back("-verify");
246   if (Opts.BinaryOutput)
247     Res.push_back("-fdiagnostics-binary");
248   if (Opts.ShowOptionNames)
249     Res.push_back("-fdiagnostics-show-option");
250   if (Opts.ShowCategories == 1)
251     Res.push_back("-fdiagnostics-show-category=id");
252   else if (Opts.ShowCategories == 2)
253     Res.push_back("-fdiagnostics-show-category=name");
254   if (Opts.ErrorLimit) {
255     Res.push_back("-ferror-limit");
256     Res.push_back(llvm::utostr(Opts.ErrorLimit));
257   }
258   if (Opts.MacroBacktraceLimit
259                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
260     Res.push_back("-fmacro-backtrace-limit");
261     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
262   }
263   if (Opts.TemplateBacktraceLimit
264                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
265     Res.push_back("-ftemplate-backtrace-limit");
266     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
267   }
268 
269   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
270     Res.push_back("-ftabstop");
271     Res.push_back(llvm::utostr(Opts.TabStop));
272   }
273   if (Opts.MessageLength) {
274     Res.push_back("-fmessage-length");
275     Res.push_back(llvm::utostr(Opts.MessageLength));
276   }
277   if (!Opts.DumpBuildInformation.empty()) {
278     Res.push_back("-dump-build-information");
279     Res.push_back(Opts.DumpBuildInformation);
280   }
281   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
282     Res.push_back("-W" + Opts.Warnings[i]);
283 }
284 
285 static const char *getInputKindName(InputKind Kind) {
286   switch (Kind) {
287   case IK_None:              break;
288   case IK_AST:               return "ast";
289   case IK_Asm:               return "assembler-with-cpp";
290   case IK_C:                 return "c";
291   case IK_CXX:               return "c++";
292   case IK_LLVM_IR:           return "ir";
293   case IK_ObjC:              return "objective-c";
294   case IK_ObjCXX:            return "objective-c++";
295   case IK_OpenCL:            return "cl";
296   case IK_PreprocessedC:     return "cpp-output";
297   case IK_PreprocessedCXX:   return "c++-cpp-output";
298   case IK_PreprocessedObjC:  return "objective-c-cpp-output";
299   case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
300   }
301 
302   llvm_unreachable("Unexpected language kind!");
303   return 0;
304 }
305 
306 static const char *getActionName(frontend::ActionKind Kind) {
307   switch (Kind) {
308   case frontend::PluginAction:
309   case frontend::InheritanceView:
310     llvm_unreachable("Invalid kind!");
311 
312   case frontend::ASTDump:                return "-ast-dump";
313   case frontend::ASTPrint:               return "-ast-print";
314   case frontend::ASTPrintXML:            return "-ast-print-xml";
315   case frontend::ASTView:                return "-ast-view";
316   case frontend::BoostCon:               return "-boostcon";
317   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
318   case frontend::DumpTokens:             return "-dump-tokens";
319   case frontend::EmitAssembly:           return "-S";
320   case frontend::EmitBC:                 return "-emit-llvm-bc";
321   case frontend::EmitHTML:               return "-emit-html";
322   case frontend::EmitLLVM:               return "-emit-llvm";
323   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
324   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
325   case frontend::EmitObj:                return "-emit-obj";
326   case frontend::FixIt:                  return "-fixit";
327   case frontend::GeneratePCH:            return "-emit-pch";
328   case frontend::GeneratePTH:            return "-emit-pth";
329   case frontend::InitOnly:               return "-init-only";
330   case frontend::ParseNoop:              return "-parse-noop";
331   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
332   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
333   case frontend::PrintDeclContext:       return "-print-decl-contexts";
334   case frontend::PrintPreamble:          return "-print-preamble";
335   case frontend::PrintPreprocessedInput: return "-E";
336   case frontend::RewriteMacros:          return "-rewrite-macros";
337   case frontend::RewriteObjC:            return "-rewrite-objc";
338   case frontend::RewriteTest:            return "-rewrite-test";
339   case frontend::RunAnalysis:            return "-analyze";
340   case frontend::RunPreprocessorOnly:    return "-Eonly";
341   }
342 
343   llvm_unreachable("Unexpected language kind!");
344   return 0;
345 }
346 
347 static void FrontendOptsToArgs(const FrontendOptions &Opts,
348                                std::vector<std::string> &Res) {
349   if (!Opts.DebugCodeCompletionPrinter)
350     Res.push_back("-no-code-completion-debug-printer");
351   if (Opts.DisableFree)
352     Res.push_back("-disable-free");
353   if (Opts.RelocatablePCH)
354     Res.push_back("-relocatable-pch");
355   if (Opts.ChainedPCH)
356     Res.push_back("-chained-pch");
357   if (Opts.ShowHelp)
358     Res.push_back("-help");
359   if (Opts.ShowMacrosInCodeCompletion)
360     Res.push_back("-code-completion-macros");
361   if (Opts.ShowCodePatternsInCodeCompletion)
362     Res.push_back("-code-completion-patterns");
363   if (Opts.ShowStats)
364     Res.push_back("-print-stats");
365   if (Opts.ShowTimers)
366     Res.push_back("-ftime-report");
367   if (Opts.ShowVersion)
368     Res.push_back("-version");
369 
370   bool NeedLang = false;
371   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
372     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
373         Opts.Inputs[i].first)
374       NeedLang = true;
375   if (NeedLang) {
376     Res.push_back("-x");
377     Res.push_back(getInputKindName(Opts.Inputs[0].first));
378   }
379   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
380     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
381            "Unable to represent this input vector!");
382     Res.push_back(Opts.Inputs[i].second);
383   }
384 
385   if (!Opts.OutputFile.empty()) {
386     Res.push_back("-o");
387     Res.push_back(Opts.OutputFile);
388   }
389   if (!Opts.ViewClassInheritance.empty()) {
390     Res.push_back("-cxx-inheritance-view");
391     Res.push_back(Opts.ViewClassInheritance);
392   }
393   if (!Opts.CodeCompletionAt.FileName.empty()) {
394     Res.push_back("-code-completion-at");
395     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
396                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
397                   llvm::utostr(Opts.CodeCompletionAt.Column));
398   }
399   if (Opts.ProgramAction != frontend::InheritanceView &&
400       Opts.ProgramAction != frontend::PluginAction)
401     Res.push_back(getActionName(Opts.ProgramAction));
402   if (!Opts.ActionName.empty()) {
403     Res.push_back("-plugin");
404     Res.push_back(Opts.ActionName);
405     for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
406       Res.push_back("-plugin-arg-" + Opts.ActionName);
407       Res.push_back(Opts.PluginArgs[i]);
408     }
409   }
410   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
411     Res.push_back("-load");
412     Res.push_back(Opts.Plugins[i]);
413   }
414   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
415     Res.push_back("-ast-merge");
416     Res.push_back(Opts.ASTMergeFiles[i]);
417   }
418   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
419     Res.push_back("-mllvm");
420     Res.push_back(Opts.LLVMArgs[i]);
421   }
422 }
423 
424 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
425                                    std::vector<std::string> &Res) {
426   if (Opts.Sysroot != "/") {
427     Res.push_back("-isysroot");
428     Res.push_back(Opts.Sysroot);
429   }
430 
431   /// User specified include entries.
432   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
433     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
434     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
435       llvm::report_fatal_error("Invalid option set!");
436     if (E.IsUserSupplied) {
437       if (E.Group == frontend::After) {
438         Res.push_back("-idirafter");
439       } else if (E.Group == frontend::Quoted) {
440         Res.push_back("-iquote");
441       } else if (E.Group == frontend::System) {
442         Res.push_back("-isystem");
443       } else {
444         assert(E.Group == frontend::Angled && "Invalid group!");
445         Res.push_back(E.IsFramework ? "-F" : "-I");
446       }
447     } else {
448       if (E.Group != frontend::Angled && E.Group != frontend::System)
449         llvm::report_fatal_error("Invalid option set!");
450       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
451                     "-iwithprefix");
452     }
453     Res.push_back(E.Path);
454   }
455 
456   if (!Opts.EnvIncPath.empty()) {
457     // FIXME: Provide an option for this, and move env detection to driver.
458     llvm::report_fatal_error("Not yet implemented!");
459   }
460   if (!Opts.CEnvIncPath.empty()) {
461     // FIXME: Provide an option for this, and move env detection to driver.
462     llvm::report_fatal_error("Not yet implemented!");
463   }
464   if (!Opts.ObjCEnvIncPath.empty()) {
465     // FIXME: Provide an option for this, and move env detection to driver.
466     llvm::report_fatal_error("Not yet implemented!");
467   }
468   if (!Opts.CXXEnvIncPath.empty()) {
469     // FIXME: Provide an option for this, and move env detection to driver.
470     llvm::report_fatal_error("Not yet implemented!");
471   }
472   if (!Opts.ObjCXXEnvIncPath.empty()) {
473     // FIXME: Provide an option for this, and move env detection to driver.
474     llvm::report_fatal_error("Not yet implemented!");
475   }
476   if (!Opts.ResourceDir.empty()) {
477     Res.push_back("-resource-dir");
478     Res.push_back(Opts.ResourceDir);
479   }
480   if (!Opts.UseStandardIncludes)
481     Res.push_back("-nostdinc");
482   if (!Opts.UseStandardCXXIncludes)
483     Res.push_back("-nostdinc++");
484   if (Opts.Verbose)
485     Res.push_back("-v");
486 }
487 
488 static void LangOptsToArgs(const LangOptions &Opts,
489                            std::vector<std::string> &Res) {
490   LangOptions DefaultLangOpts;
491 
492   // FIXME: Need to set -std to get all the implicit options.
493 
494   // FIXME: We want to only pass options relative to the defaults, which
495   // requires constructing a target. :(
496   //
497   // It would be better to push the all target specific choices into the driver,
498   // so that everything below that was more uniform.
499 
500   if (Opts.Trigraphs)
501     Res.push_back("-trigraphs");
502   // Implicit based on the input kind:
503   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
504   // Implicit based on the input language standard:
505   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
506   if (Opts.DollarIdents)
507     Res.push_back("-fdollars-in-identifiers");
508   if (Opts.GNUMode && !Opts.GNUKeywords)
509     Res.push_back("-fno-gnu-keywords");
510   if (!Opts.GNUMode && Opts.GNUKeywords)
511     Res.push_back("-fgnu-keywords");
512   if (Opts.Microsoft)
513     Res.push_back("-fms-extensions");
514   if (Opts.ObjCNonFragileABI)
515     Res.push_back("-fobjc-nonfragile-abi");
516   if (Opts.ObjCNonFragileABI2)
517     Res.push_back("-fobjc-nonfragile-abi2");
518   // NoInline is implicit.
519   if (!Opts.CXXOperatorNames)
520     Res.push_back("-fno-operator-names");
521   if (Opts.PascalStrings)
522     Res.push_back("-fpascal-strings");
523   if (Opts.CatchUndefined)
524     Res.push_back("-fcatch-undefined-behavior");
525   if (Opts.WritableStrings)
526     Res.push_back("-fwritable-strings");
527   if (Opts.ConstStrings)
528     Res.push_back("-Wwrite-strings");
529   if (!Opts.LaxVectorConversions)
530     Res.push_back("-fno-lax-vector-conversions");
531   if (Opts.AltiVec)
532     Res.push_back("-faltivec");
533   if (Opts.Exceptions)
534     Res.push_back("-fexceptions");
535   if (Opts.SjLjExceptions)
536     Res.push_back("-fsjlj-exceptions");
537   if (!Opts.RTTI)
538     Res.push_back("-fno-rtti");
539   if (!Opts.NeXTRuntime)
540     Res.push_back("-fgnu-runtime");
541   if (Opts.Freestanding)
542     Res.push_back("-ffreestanding");
543   if (Opts.NoBuiltin)
544     Res.push_back("-fno-builtin");
545   if (!Opts.AssumeSaneOperatorNew)
546     Res.push_back("-fno-assume-sane-operator-new");
547   if (!Opts.ThreadsafeStatics)
548     Res.push_back("-fno-threadsafe-statics");
549   if (Opts.POSIXThreads)
550     Res.push_back("-pthread");
551   if (Opts.Blocks)
552     Res.push_back("-fblocks");
553   if (Opts.EmitAllDecls)
554     Res.push_back("-femit-all-decls");
555   if (Opts.MathErrno)
556     Res.push_back("-fmath-errno");
557   switch (Opts.getSignedOverflowBehavior()) {
558   case LangOptions::SOB_Undefined: break;
559   case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
560   case LangOptions::SOB_Trapping:  Res.push_back("-ftrapv"); break;
561   }
562   if (Opts.HeinousExtensions)
563     Res.push_back("-fheinous-gnu-extensions");
564   // Optimize is implicit.
565   // OptimizeSize is implicit.
566   if (Opts.Static)
567     Res.push_back("-static-define");
568   if (Opts.DumpRecordLayouts)
569     Res.push_back("-fdump-record-layouts");
570   if (Opts.DumpVTableLayouts)
571     Res.push_back("-fdump-vtable-layouts");
572   if (Opts.NoBitFieldTypeAlign)
573     Res.push_back("-fno-bitfield-type-alignment");
574   if (Opts.SjLjExceptions)
575     Res.push_back("-fsjlj-exceptions");
576   if (Opts.PICLevel) {
577     Res.push_back("-pic-level");
578     Res.push_back(llvm::utostr(Opts.PICLevel));
579   }
580   if (Opts.ObjCGCBitmapPrint)
581     Res.push_back("-print-ivar-layout");
582   if (Opts.NoConstantCFStrings)
583     Res.push_back("-fno-constant-cfstrings");
584   if (!Opts.AccessControl)
585     Res.push_back("-fno-access-control");
586   if (!Opts.CharIsSigned)
587     Res.push_back("-fno-signed-char");
588   if (Opts.ShortWChar)
589     Res.push_back("-fshort-wchar");
590   if (!Opts.ElideConstructors)
591     Res.push_back("-fno-elide-constructors");
592   if (Opts.getGCMode() != LangOptions::NonGC) {
593     if (Opts.getGCMode() == LangOptions::HybridGC) {
594       Res.push_back("-fobjc-gc");
595     } else {
596       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
597       Res.push_back("-fobjc-gc-only");
598     }
599   }
600   if (Opts.getVisibilityMode() != LangOptions::Default) {
601     Res.push_back("-fvisibility");
602     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
603       Res.push_back("hidden");
604     } else {
605       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
606              "Invalid visibility!");
607       Res.push_back("protected");
608     }
609   }
610   if (Opts.InlineVisibilityHidden)
611     Res.push_back("-fvisibility-inlines-hidden");
612 
613   if (Opts.getStackProtectorMode() != 0) {
614     Res.push_back("-stack-protector");
615     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
616   }
617   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
618     Res.push_back("-ftemplate-depth");
619     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
620   }
621   if (!Opts.ObjCConstantStringClass.empty()) {
622     Res.push_back("-fconstant-string-class");
623     Res.push_back(Opts.ObjCConstantStringClass);
624   }
625 }
626 
627 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
628                                    std::vector<std::string> &Res) {
629   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
630     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
631                   Opts.Macros[i].first);
632   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
633     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
634     Res.push_back("-include");
635     Res.push_back(Opts.Includes[i]);
636   }
637   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
638     Res.push_back("-imacros");
639     Res.push_back(Opts.MacroIncludes[i]);
640   }
641   if (!Opts.UsePredefines)
642     Res.push_back("-undef");
643   if (Opts.DetailedRecord)
644     Res.push_back("-detailed-preprocessing-record");
645   if (!Opts.ImplicitPCHInclude.empty()) {
646     Res.push_back("-include-pch");
647     Res.push_back(Opts.ImplicitPCHInclude);
648   }
649   if (!Opts.ImplicitPTHInclude.empty()) {
650     Res.push_back("-include-pth");
651     Res.push_back(Opts.ImplicitPTHInclude);
652   }
653   if (!Opts.TokenCache.empty()) {
654     if (Opts.ImplicitPTHInclude.empty()) {
655       Res.push_back("-token-cache");
656       Res.push_back(Opts.TokenCache);
657     } else
658       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
659              "Unsupported option combination!");
660   }
661   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
662     Res.push_back("-remap-file");
663     Res.push_back(Opts.RemappedFiles[i].first + ";" +
664                   Opts.RemappedFiles[i].second);
665   }
666 }
667 
668 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
669                                          std::vector<std::string> &Res) {
670   if (!Opts.ShowCPP && !Opts.ShowMacros)
671     llvm::report_fatal_error("Invalid option combination!");
672 
673   if (Opts.ShowCPP && Opts.ShowMacros)
674     Res.push_back("-dD");
675   else if (!Opts.ShowCPP && Opts.ShowMacros)
676     Res.push_back("-dM");
677 
678   if (!Opts.ShowLineMarkers)
679     Res.push_back("-P");
680   if (Opts.ShowComments)
681     Res.push_back("-C");
682   if (Opts.ShowMacroComments)
683     Res.push_back("-CC");
684 }
685 
686 static void TargetOptsToArgs(const TargetOptions &Opts,
687                              std::vector<std::string> &Res) {
688   Res.push_back("-triple");
689   Res.push_back(Opts.Triple);
690   if (!Opts.CPU.empty()) {
691     Res.push_back("-target-cpu");
692     Res.push_back(Opts.CPU);
693   }
694   if (!Opts.ABI.empty()) {
695     Res.push_back("-target-abi");
696     Res.push_back(Opts.ABI);
697   }
698   Res.push_back("-cxx-abi");
699   Res.push_back(Opts.CXXABI);
700   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
701     Res.push_back("-target-feature");
702     Res.push_back(Opts.Features[i]);
703   }
704 }
705 
706 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
707   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
708   CodeGenOptsToArgs(getCodeGenOpts(), Res);
709   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
710   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
711   FrontendOptsToArgs(getFrontendOpts(), Res);
712   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
713   LangOptsToArgs(getLangOpts(), Res);
714   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
715   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
716   TargetOptsToArgs(getTargetOpts(), Res);
717 }
718 
719 //===----------------------------------------------------------------------===//
720 // Deserialization (to args)
721 //===----------------------------------------------------------------------===//
722 
723 using namespace clang::driver;
724 using namespace clang::driver::cc1options;
725 
726 //
727 
728 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
729                               Diagnostic &Diags) {
730   using namespace cc1options;
731 
732   Opts.AnalysisList.clear();
733 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
734   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
735 #include "clang/Frontend/Analyses.def"
736 
737   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
738     llvm::StringRef Name = A->getValue(Args);
739     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
740 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
741       .Case(CMDFLAG, NAME##Model)
742 #include "clang/Frontend/Analyses.def"
743       .Default(NumStores);
744     // FIXME: Error handling.
745     if (Value == NumStores)
746       Diags.Report(diag::err_drv_invalid_value)
747         << A->getAsString(Args) << Name;
748     else
749       Opts.AnalysisStoreOpt = Value;
750   }
751 
752   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
753     llvm::StringRef Name = A->getValue(Args);
754     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
755 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
756       .Case(CMDFLAG, NAME##Model)
757 #include "clang/Frontend/Analyses.def"
758       .Default(NumConstraints);
759     // FIXME: Error handling.
760     if (Value == NumConstraints)
761       Diags.Report(diag::err_drv_invalid_value)
762         << A->getAsString(Args) << Name;
763     else
764       Opts.AnalysisConstraintsOpt = Value;
765   }
766 
767   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
768     llvm::StringRef Name = A->getValue(Args);
769     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
770 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
771       .Case(CMDFLAG, PD_##NAME)
772 #include "clang/Frontend/Analyses.def"
773       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
774     // FIXME: Error handling.
775     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
776       Diags.Report(diag::err_drv_invalid_value)
777         << A->getAsString(Args) << Name;
778     else
779       Opts.AnalysisDiagOpt = Value;
780   }
781 
782   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
783   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
784   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
785   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
786   Opts.AnalyzeNestedBlocks =
787     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
788   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
789   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
790   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
791   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
792   Opts.EnableExperimentalInternalChecks =
793     Args.hasArg(OPT_analyzer_experimental_internal_checks);
794   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
795   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
796   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
797   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
798 }
799 
800 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
801                              Diagnostic &Diags) {
802   using namespace cc1options;
803   // -Os implies -O2
804   if (Args.hasArg(OPT_Os))
805     Opts.OptimizationLevel = 2;
806   else {
807     Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
808     if (Opts.OptimizationLevel > 3) {
809       Diags.Report(diag::err_drv_invalid_value)
810         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
811       Opts.OptimizationLevel = 3;
812     }
813   }
814 
815   // We must always run at least the always inlining pass.
816   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
817     : CodeGenOptions::OnlyAlwaysInlining;
818 
819   Opts.DebugInfo = Args.hasArg(OPT_g);
820   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
821   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
822   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
823   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
824   Opts.NoCommon = Args.hasArg(OPT_fno_common);
825   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
826   Opts.OptimizeSize = Args.hasArg(OPT_Os);
827   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
828                             Args.hasArg(OPT_ffreestanding));
829   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
830 
831   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
832   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
833   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
834   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
835   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
836   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
837   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
838   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
839   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
840   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
841   Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
842   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
843   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
844   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
845 
846   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
847   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
848 
849   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
850   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
851 
852   Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
853 
854   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
855     llvm::StringRef Name = A->getValue(Args);
856     unsigned Method = llvm::StringSwitch<unsigned>(Name)
857       .Case("legacy", CodeGenOptions::Legacy)
858       .Case("non-legacy", CodeGenOptions::NonLegacy)
859       .Case("mixed", CodeGenOptions::Mixed)
860       .Default(~0U);
861     if (Method == ~0U)
862       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
863     else
864       Opts.ObjCDispatchMethod = Method;
865   }
866 }
867 
868 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
869                                       ArgList &Args) {
870   using namespace cc1options;
871   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
872   Opts.Targets = Args.getAllArgValues(OPT_MT);
873   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
874   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
875 }
876 
877 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
878                                 Diagnostic &Diags) {
879   using namespace cc1options;
880   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
881   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
882   Opts.Pedantic = Args.hasArg(OPT_pedantic);
883   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
884   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
885   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
886   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
887   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
888   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
889   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
890 
891   llvm::StringRef ShowOverloads =
892     Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
893   if (ShowOverloads == "best")
894     Opts.ShowOverloads = Diagnostic::Ovl_Best;
895   else if (ShowOverloads == "all")
896     Opts.ShowOverloads = Diagnostic::Ovl_All;
897   else
898     Diags.Report(diag::err_drv_invalid_value)
899       << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
900       << ShowOverloads;
901 
902   llvm::StringRef ShowCategory =
903     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
904   if (ShowCategory == "none")
905     Opts.ShowCategories = 0;
906   else if (ShowCategory == "id")
907     Opts.ShowCategories = 1;
908   else if (ShowCategory == "name")
909     Opts.ShowCategories = 2;
910   else
911     Diags.Report(diag::err_drv_invalid_value)
912       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
913       << ShowCategory;
914 
915   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
916   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
917   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
918   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
919   Opts.MacroBacktraceLimit
920     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
921                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
922   Opts.TemplateBacktraceLimit
923     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
924                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
925                          Diags);
926   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
927                                     DiagnosticOptions::DefaultTabStop, Diags);
928   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
929     Diags.Report(diag::warn_ignoring_ftabstop_value)
930       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
931     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
932   }
933   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
934   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
935   Opts.Warnings = Args.getAllArgValues(OPT_W);
936 }
937 
938 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
939                                    Diagnostic &Diags) {
940   using namespace cc1options;
941   Opts.ProgramAction = frontend::ParseSyntaxOnly;
942   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
943     switch (A->getOption().getID()) {
944     default:
945       assert(0 && "Invalid option in group!");
946     case OPT_ast_dump:
947       Opts.ProgramAction = frontend::ASTDump; break;
948     case OPT_ast_print:
949       Opts.ProgramAction = frontend::ASTPrint; break;
950     case OPT_ast_print_xml:
951       Opts.ProgramAction = frontend::ASTPrintXML; break;
952     case OPT_ast_view:
953       Opts.ProgramAction = frontend::ASTView; break;
954     case OPT_boostcon:
955       Opts.ProgramAction = frontend::BoostCon; break;
956     case OPT_dump_raw_tokens:
957       Opts.ProgramAction = frontend::DumpRawTokens; break;
958     case OPT_dump_tokens:
959       Opts.ProgramAction = frontend::DumpTokens; break;
960     case OPT_S:
961       Opts.ProgramAction = frontend::EmitAssembly; break;
962     case OPT_emit_llvm_bc:
963       Opts.ProgramAction = frontend::EmitBC; break;
964     case OPT_emit_html:
965       Opts.ProgramAction = frontend::EmitHTML; break;
966     case OPT_emit_llvm:
967       Opts.ProgramAction = frontend::EmitLLVM; break;
968     case OPT_emit_llvm_only:
969       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
970     case OPT_emit_codegen_only:
971       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
972     case OPT_emit_obj:
973       Opts.ProgramAction = frontend::EmitObj; break;
974     case OPT_fixit_EQ:
975       Opts.FixItSuffix = A->getValue(Args);
976       // fall-through!
977     case OPT_fixit:
978       Opts.ProgramAction = frontend::FixIt; break;
979     case OPT_emit_pch:
980       Opts.ProgramAction = frontend::GeneratePCH; break;
981     case OPT_emit_pth:
982       Opts.ProgramAction = frontend::GeneratePTH; break;
983     case OPT_init_only:
984       Opts.ProgramAction = frontend::InitOnly; break;
985     case OPT_parse_noop:
986       Opts.ProgramAction = frontend::ParseNoop; break;
987     case OPT_parse_print_callbacks:
988       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
989     case OPT_fsyntax_only:
990       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
991     case OPT_print_decl_contexts:
992       Opts.ProgramAction = frontend::PrintDeclContext; break;
993     case OPT_print_preamble:
994       Opts.ProgramAction = frontend::PrintPreamble; break;
995     case OPT_E:
996       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
997     case OPT_rewrite_macros:
998       Opts.ProgramAction = frontend::RewriteMacros; break;
999     case OPT_rewrite_objc:
1000       Opts.ProgramAction = frontend::RewriteObjC; break;
1001     case OPT_rewrite_test:
1002       Opts.ProgramAction = frontend::RewriteTest; break;
1003     case OPT_analyze:
1004       Opts.ProgramAction = frontend::RunAnalysis; break;
1005     case OPT_Eonly:
1006       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1007     }
1008   }
1009 
1010   if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1011     Opts.Plugins.push_back(A->getValue(Args,0));
1012     Opts.ProgramAction = frontend::PluginAction;
1013     Opts.ActionName = A->getValue(Args);
1014 
1015     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1016            end = Args.filtered_end(); it != end; ++it) {
1017       if ((*it)->getValue(Args, 0) == Opts.ActionName)
1018         Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1019     }
1020   }
1021 
1022   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1023     Opts.CodeCompletionAt =
1024       ParsedSourceLocation::FromString(A->getValue(Args));
1025     if (Opts.CodeCompletionAt.FileName.empty())
1026       Diags.Report(diag::err_drv_invalid_value)
1027         << A->getAsString(Args) << A->getValue(Args);
1028   }
1029   Opts.DebugCodeCompletionPrinter =
1030     !Args.hasArg(OPT_no_code_completion_debug_printer);
1031   Opts.DisableFree = Args.hasArg(OPT_disable_free);
1032 
1033   Opts.OutputFile = Args.getLastArgValue(OPT_o);
1034   Opts.Plugins = Args.getAllArgValues(OPT_load);
1035   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1036   Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1037   Opts.ShowHelp = Args.hasArg(OPT_help);
1038   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1039   Opts.ShowCodePatternsInCodeCompletion
1040     = Args.hasArg(OPT_code_completion_patterns);
1041   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1042   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1043   Opts.ShowVersion = Args.hasArg(OPT_version);
1044   Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1045   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1046   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1047 
1048   InputKind DashX = IK_None;
1049   if (const Arg *A = Args.getLastArg(OPT_x)) {
1050     DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1051       .Case("c", IK_C)
1052       .Case("cl", IK_OpenCL)
1053       .Case("c", IK_C)
1054       .Case("cl", IK_OpenCL)
1055       .Case("c++", IK_CXX)
1056       .Case("objective-c", IK_ObjC)
1057       .Case("objective-c++", IK_ObjCXX)
1058       .Case("cpp-output", IK_PreprocessedC)
1059       .Case("assembler-with-cpp", IK_Asm)
1060       .Case("c++-cpp-output", IK_PreprocessedCXX)
1061       .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1062       .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1063       .Case("c-header", IK_C)
1064       .Case("objective-c-header", IK_ObjC)
1065       .Case("c++-header", IK_CXX)
1066       .Case("objective-c++-header", IK_ObjCXX)
1067       .Case("ast", IK_AST)
1068       .Case("ir", IK_LLVM_IR)
1069       .Default(IK_None);
1070     if (DashX == IK_None)
1071       Diags.Report(diag::err_drv_invalid_value)
1072         << A->getAsString(Args) << A->getValue(Args);
1073   }
1074 
1075   // '-' is the default input if none is given.
1076   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1077   Opts.Inputs.clear();
1078   if (Inputs.empty())
1079     Inputs.push_back("-");
1080   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1081     InputKind IK = DashX;
1082     if (IK == IK_None) {
1083       IK = FrontendOptions::getInputKindForExtension(
1084         llvm::StringRef(Inputs[i]).rsplit('.').second);
1085       // FIXME: Remove this hack.
1086       if (i == 0)
1087         DashX = IK;
1088     }
1089     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1090   }
1091 
1092   return DashX;
1093 }
1094 
1095 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1096                                                  void *MainAddr) {
1097   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1098 
1099   if (!P.isEmpty()) {
1100     P.eraseComponent();  // Remove /clang from foo/bin/clang
1101     P.eraseComponent();  // Remove /bin   from foo/bin
1102 
1103     // Get foo/lib/clang/<version>/include
1104     P.appendComponent("lib");
1105     P.appendComponent("clang");
1106     P.appendComponent(CLANG_VERSION_STRING);
1107   }
1108 
1109   return P.str();
1110 }
1111 
1112 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1113   using namespace cc1options;
1114   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1115   Opts.Verbose = Args.hasArg(OPT_v);
1116   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1117   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1118   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1119   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1120 
1121   // Add -I... and -F... options in order.
1122   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1123          ie = Args.filtered_end(); it != ie; ++it)
1124     Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1125                  /*IsFramework=*/ (*it)->getOption().matches(OPT_F));
1126 
1127   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1128   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1129   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1130                                              OPT_iwithprefixbefore),
1131          ie = Args.filtered_end(); it != ie; ++it) {
1132     const Arg *A = *it;
1133     if (A->getOption().matches(OPT_iprefix))
1134       Prefix = A->getValue(Args);
1135     else if (A->getOption().matches(OPT_iwithprefix))
1136       Opts.AddPath(Prefix.str() + A->getValue(Args),
1137                    frontend::System, false, false);
1138     else
1139       Opts.AddPath(Prefix.str() + A->getValue(Args),
1140                    frontend::Angled, false, false);
1141   }
1142 
1143   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1144          ie = Args.filtered_end(); it != ie; ++it)
1145     Opts.AddPath((*it)->getValue(Args), frontend::After, true, false);
1146   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1147          ie = Args.filtered_end(); it != ie; ++it)
1148     Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false);
1149   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1150          ie = Args.filtered_end(); it != ie; ++it)
1151     Opts.AddPath((*it)->getValue(Args), frontend::System, true, false);
1152 
1153   // FIXME: Need options for the various environment variables!
1154 }
1155 
1156 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1157                           Diagnostic &Diags) {
1158   // FIXME: Cleanup per-file based stuff.
1159 
1160   // Set some properties which depend soley on the input kind; it would be nice
1161   // to move these to the language standard, and have the driver resolve the
1162   // input kind + language standard.
1163   if (IK == IK_Asm) {
1164     Opts.AsmPreprocessor = 1;
1165   } else if (IK == IK_ObjC ||
1166              IK == IK_ObjCXX ||
1167              IK == IK_PreprocessedObjC ||
1168              IK == IK_PreprocessedObjCXX) {
1169     Opts.ObjC1 = Opts.ObjC2 = 1;
1170   }
1171 
1172   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1173   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1174     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1175 #define LANGSTANDARD(id, name, desc, features) \
1176       .Case(name, LangStandard::lang_##id)
1177 #include "clang/Frontend/LangStandards.def"
1178       .Default(LangStandard::lang_unspecified);
1179     if (LangStd == LangStandard::lang_unspecified)
1180       Diags.Report(diag::err_drv_invalid_value)
1181         << A->getAsString(Args) << A->getValue(Args);
1182   }
1183 
1184   if (LangStd == LangStandard::lang_unspecified) {
1185     // Based on the base language, pick one.
1186     switch (IK) {
1187     case IK_None:
1188     case IK_AST:
1189     case IK_LLVM_IR:
1190       assert(0 && "Invalid input kind!");
1191     case IK_OpenCL:
1192       LangStd = LangStandard::lang_opencl;
1193       break;
1194     case IK_Asm:
1195     case IK_C:
1196     case IK_PreprocessedC:
1197     case IK_ObjC:
1198     case IK_PreprocessedObjC:
1199       LangStd = LangStandard::lang_gnu99;
1200       break;
1201     case IK_CXX:
1202     case IK_PreprocessedCXX:
1203     case IK_ObjCXX:
1204     case IK_PreprocessedObjCXX:
1205       LangStd = LangStandard::lang_gnucxx98;
1206       break;
1207     }
1208   }
1209 
1210   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1211   Opts.BCPLComment = Std.hasBCPLComments();
1212   Opts.C99 = Std.isC99();
1213   Opts.CPlusPlus = Std.isCPlusPlus();
1214   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1215   Opts.Digraphs = Std.hasDigraphs();
1216   Opts.GNUMode = Std.isGNUMode();
1217   Opts.GNUInline = !Std.isC99();
1218   Opts.HexFloats = Std.hasHexFloats();
1219   Opts.ImplicitInt = Std.hasImplicitInt();
1220 
1221   // OpenCL has some additional defaults.
1222   if (LangStd == LangStandard::lang_opencl) {
1223     Opts.OpenCL = 1;
1224     Opts.AltiVec = 1;
1225     Opts.CXXOperatorNames = 1;
1226     Opts.LaxVectorConversions = 1;
1227   }
1228 
1229   // OpenCL and C++ both have bool, true, false keywords.
1230   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1231 
1232   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1233   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1234   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1235   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1236   // name, as it doesn't seem a useful distinction.
1237   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1238                                   Opts.GNUMode);
1239 
1240   if (Opts.CPlusPlus)
1241     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1242 
1243   if (Args.hasArg(OPT_fobjc_gc_only))
1244     Opts.setGCMode(LangOptions::GCOnly);
1245   else if (Args.hasArg(OPT_fobjc_gc))
1246     Opts.setGCMode(LangOptions::HybridGC);
1247 
1248   if (Args.hasArg(OPT_print_ivar_layout))
1249     Opts.ObjCGCBitmapPrint = 1;
1250   if (Args.hasArg(OPT_fno_constant_cfstrings))
1251     Opts.NoConstantCFStrings = 1;
1252 
1253   if (Args.hasArg(OPT_faltivec))
1254     Opts.AltiVec = 1;
1255 
1256   if (Args.hasArg(OPT_pthread))
1257     Opts.POSIXThreads = 1;
1258 
1259   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1260   if (Vis == "default")
1261     Opts.setVisibilityMode(LangOptions::Default);
1262   else if (Vis == "hidden")
1263     Opts.setVisibilityMode(LangOptions::Hidden);
1264   else if (Vis == "protected")
1265     Opts.setVisibilityMode(LangOptions::Protected);
1266   else
1267     Diags.Report(diag::err_drv_invalid_value)
1268       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1269 
1270   if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1271     Opts.InlineVisibilityHidden = 1;
1272 
1273   if (Args.hasArg(OPT_ftrapv))
1274     Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1275   else if (Args.hasArg(OPT_fwrapv))
1276     Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1277 
1278   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1279   // is specified, or -std is set to a conforming mode.
1280   Opts.Trigraphs = !Opts.GNUMode;
1281   if (Args.hasArg(OPT_trigraphs))
1282     Opts.Trigraphs = 1;
1283 
1284   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1285                                    OPT_fno_dollars_in_identifiers,
1286                                    !Opts.AsmPreprocessor);
1287   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1288   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1289   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1290   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1291   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1292     Opts.LaxVectorConversions = 0;
1293   if (Args.hasArg(OPT_fno_threadsafe_statics))
1294     Opts.ThreadsafeStatics = 0;
1295   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1296   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1297   Opts.Blocks = Args.hasArg(OPT_fblocks);
1298   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1299   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1300   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1301   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1302   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1303   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1304   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1305   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1306   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1307   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1308                                                Diags);
1309   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1310   Opts.ObjCConstantStringClass =
1311     Args.getLastArgValue(OPT_fconstant_string_class);
1312   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1313   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1314   if (Opts.ObjCNonFragileABI2)
1315     Opts.ObjCNonFragileABI = true;
1316   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1317   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1318   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1319   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1320   Opts.Static = Args.hasArg(OPT_static_define);
1321   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1322   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1323   Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1324   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1325   Opts.OptimizeSize = 0;
1326 
1327   // FIXME: Eliminate this dependency.
1328   unsigned Opt =
1329     Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1330   Opts.Optimize = Opt != 0;
1331 
1332   // This is the __NO_INLINE__ define, which just depends on things like the
1333   // optimization level and -fno-inline, not actually whether the backend has
1334   // inlining enabled.
1335   //
1336   // FIXME: This is affected by other options (-fno-inline).
1337   Opts.NoInline = !Opt;
1338 
1339   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1340   switch (SSP) {
1341   default:
1342     Diags.Report(diag::err_drv_invalid_value)
1343       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1344     break;
1345   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1346   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1347   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1348   }
1349 }
1350 
1351 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1352                                   Diagnostic &Diags) {
1353   using namespace cc1options;
1354   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1355   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1356   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1357       Opts.TokenCache = A->getValue(Args);
1358   else
1359     Opts.TokenCache = Opts.ImplicitPTHInclude;
1360   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1361   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1362   // Add macros from the command line.
1363   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1364          ie = Args.filtered_end(); it != ie; ++it) {
1365     if ((*it)->getOption().matches(OPT_D))
1366       Opts.addMacroDef((*it)->getValue(Args));
1367     else
1368       Opts.addMacroUndef((*it)->getValue(Args));
1369   }
1370 
1371   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1372 
1373   // Add the ordered list of -includes.
1374   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1375                                              OPT_include_pth),
1376          ie = Args.filtered_end(); it != ie; ++it) {
1377     const Arg *A = *it;
1378     // PCH is handled specially, we need to extra the original include path.
1379     if (A->getOption().matches(OPT_include_pch)) {
1380       std::string OriginalFile =
1381         PCHReader::getOriginalSourceFile(A->getValue(Args), Diags);
1382       if (OriginalFile.empty())
1383         continue;
1384 
1385       Opts.Includes.push_back(OriginalFile);
1386     } else
1387       Opts.Includes.push_back(A->getValue(Args));
1388   }
1389 
1390   // Include 'altivec.h' if -faltivec option present
1391   if (Args.hasArg(OPT_faltivec))
1392     Opts.Includes.push_back("altivec.h");
1393 
1394   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1395          ie = Args.filtered_end(); it != ie; ++it) {
1396     const Arg *A = *it;
1397     std::pair<llvm::StringRef,llvm::StringRef> Split =
1398       llvm::StringRef(A->getValue(Args)).split(';');
1399 
1400     if (Split.second.empty()) {
1401       Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1402       continue;
1403     }
1404 
1405     Opts.addRemappedFile(Split.first, Split.second);
1406   }
1407 }
1408 
1409 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1410                                         ArgList &Args) {
1411   using namespace cc1options;
1412   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1413   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1414   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1415   Opts.ShowComments = Args.hasArg(OPT_C);
1416   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1417 }
1418 
1419 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1420   using namespace cc1options;
1421   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1422   Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1423   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1424   Opts.Triple = Args.getLastArgValue(OPT_triple);
1425   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1426 
1427   // Use the host triple if unspecified.
1428   if (Opts.Triple.empty())
1429     Opts.Triple = llvm::sys::getHostTriple();
1430 
1431   // Use the Itanium C++ ABI if unspecified.
1432   if (Opts.CXXABI.empty())
1433     Opts.CXXABI = "itanium";
1434 }
1435 
1436 //
1437 
1438 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1439                                         const char **ArgBegin,
1440                                         const char **ArgEnd,
1441                                         Diagnostic &Diags) {
1442   // Parse the arguments.
1443   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1444   unsigned MissingArgIndex, MissingArgCount;
1445   llvm::OwningPtr<InputArgList> Args(
1446     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1447 
1448   // Check for missing argument error.
1449   if (MissingArgCount)
1450     Diags.Report(diag::err_drv_missing_argument)
1451       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1452 
1453   // Issue errors on unknown arguments.
1454   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1455          ie = Args->filtered_end(); it != ie; ++it)
1456     Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1457 
1458   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1459   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1460   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1461   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1462   InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1463   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1464   if (DashX != IK_AST && DashX != IK_LLVM_IR)
1465     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1466   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1467   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1468   ParseTargetArgs(Res.getTargetOpts(), *Args);
1469 }
1470