xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 95a546ee4dbdc997e9898c9839f3851f46a78b5c) 
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(InputKind Kind) {
284   switch (Kind) {
285   case IK_None:              break;
286   case IK_AST:               return "ast";
287   case IK_Asm:               return "assembler-with-cpp";
288   case IK_C:                 return "c";
289   case IK_CXX:               return "c++";
290   case IK_LLVM_IR:           return "ir";
291   case IK_ObjC:              return "objective-c";
292   case IK_ObjCXX:            return "objective-c++";
293   case IK_OpenCL:            return "cl";
294   case IK_PreprocessedC:     return "cpp-output";
295   case IK_PreprocessedCXX:   return "c++-cpp-output";
296   case IK_PreprocessedObjC:  return "objective-c-cpp-output";
297   case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
298   }
299 
300   llvm_unreachable("Unexpected language kind!");
301   return 0;
302 }
303 
304 static const char *getActionName(frontend::ActionKind Kind) {
305   switch (Kind) {
306   case frontend::PluginAction:
307   case frontend::InheritanceView:
308     llvm_unreachable("Invalid kind!");
309 
310   case frontend::ASTDump:                return "-ast-dump";
311   case frontend::ASTPrint:               return "-ast-print";
312   case frontend::ASTPrintXML:            return "-ast-print-xml";
313   case frontend::ASTView:                return "-ast-view";
314   case frontend::BoostCon:               return "-boostcon";
315   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
316   case frontend::DumpTokens:             return "-dump-tokens";
317   case frontend::EmitAssembly:           return "-S";
318   case frontend::EmitBC:                 return "-emit-llvm-bc";
319   case frontend::EmitHTML:               return "-emit-html";
320   case frontend::EmitLLVM:               return "-emit-llvm";
321   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
322   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
323   case frontend::EmitObj:                return "-emit-obj";
324   case frontend::FixIt:                  return "-fixit";
325   case frontend::GeneratePCH:            return "-emit-pch";
326   case frontend::GeneratePTH:            return "-emit-pth";
327   case frontend::InitOnly:               return "-init-only";
328   case frontend::ParseNoop:              return "-parse-noop";
329   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
330   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
331   case frontend::PrintDeclContext:       return "-print-decl-contexts";
332   case frontend::PrintPreprocessedInput: return "-E";
333   case frontend::RewriteMacros:          return "-rewrite-macros";
334   case frontend::RewriteObjC:            return "-rewrite-objc";
335   case frontend::RewriteTest:            return "-rewrite-test";
336   case frontend::RunAnalysis:            return "-analyze";
337   case frontend::RunPreprocessorOnly:    return "-Eonly";
338   }
339 
340   llvm_unreachable("Unexpected language kind!");
341   return 0;
342 }
343 
344 static void FrontendOptsToArgs(const FrontendOptions &Opts,
345                                std::vector<std::string> &Res) {
346   if (!Opts.DebugCodeCompletionPrinter)
347     Res.push_back("-no-code-completion-debug-printer");
348   if (Opts.DisableFree)
349     Res.push_back("-disable-free");
350   if (Opts.RelocatablePCH)
351     Res.push_back("-relocatable-pch");
352   if (Opts.ShowHelp)
353     Res.push_back("-help");
354   if (Opts.ShowMacrosInCodeCompletion)
355     Res.push_back("-code-completion-macros");
356   if (Opts.ShowCodePatternsInCodeCompletion)
357     Res.push_back("-code-completion-patterns");
358   if (Opts.ShowStats)
359     Res.push_back("-print-stats");
360   if (Opts.ShowTimers)
361     Res.push_back("-ftime-report");
362   if (Opts.ShowVersion)
363     Res.push_back("-version");
364 
365   bool NeedLang = false;
366   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
367     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
368         Opts.Inputs[i].first)
369       NeedLang = true;
370   if (NeedLang) {
371     Res.push_back("-x");
372     Res.push_back(getInputKindName(Opts.Inputs[0].first));
373   }
374   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
375     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
376            "Unable to represent this input vector!");
377     Res.push_back(Opts.Inputs[i].second);
378   }
379 
380   if (!Opts.OutputFile.empty()) {
381     Res.push_back("-o");
382     Res.push_back(Opts.OutputFile);
383   }
384   if (!Opts.ViewClassInheritance.empty()) {
385     Res.push_back("-cxx-inheritance-view");
386     Res.push_back(Opts.ViewClassInheritance);
387   }
388   if (!Opts.CodeCompletionAt.FileName.empty()) {
389     Res.push_back("-code-completion-at");
390     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
391                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
392                   llvm::utostr(Opts.CodeCompletionAt.Column));
393   }
394   if (Opts.ProgramAction != frontend::InheritanceView &&
395       Opts.ProgramAction != frontend::PluginAction)
396     Res.push_back(getActionName(Opts.ProgramAction));
397   if (!Opts.ActionName.empty()) {
398     Res.push_back("-plugin");
399     Res.push_back(Opts.ActionName);
400   }
401   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
402     Res.push_back("-load");
403     Res.push_back(Opts.Plugins[i]);
404   }
405   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
406     Res.push_back("-ast-merge");
407     Res.push_back(Opts.ASTMergeFiles[i]);
408   }
409   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
410     Res.push_back("-mllvm");
411     Res.push_back(Opts.LLVMArgs[i]);
412   }
413 }
414 
415 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
416                                    std::vector<std::string> &Res) {
417   if (Opts.Sysroot != "/") {
418     Res.push_back("-isysroot");
419     Res.push_back(Opts.Sysroot);
420   }
421 
422   /// User specified include entries.
423   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
424     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
425     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
426       llvm::report_fatal_error("Invalid option set!");
427     if (E.IsUserSupplied) {
428       if (E.Group == frontend::After) {
429         Res.push_back("-idirafter");
430       } else if (E.Group == frontend::Quoted) {
431         Res.push_back("-iquote");
432       } else if (E.Group == frontend::System) {
433         Res.push_back("-isystem");
434       } else {
435         assert(E.Group == frontend::Angled && "Invalid group!");
436         Res.push_back(E.IsFramework ? "-F" : "-I");
437       }
438     } else {
439       if (E.Group != frontend::Angled && E.Group != frontend::System)
440         llvm::report_fatal_error("Invalid option set!");
441       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
442                     "-iwithprefix");
443     }
444     Res.push_back(E.Path);
445   }
446 
447   if (!Opts.EnvIncPath.empty()) {
448     // FIXME: Provide an option for this, and move env detection to driver.
449     llvm::report_fatal_error("Not yet implemented!");
450   }
451   if (!Opts.CEnvIncPath.empty()) {
452     // FIXME: Provide an option for this, and move env detection to driver.
453     llvm::report_fatal_error("Not yet implemented!");
454   }
455   if (!Opts.ObjCEnvIncPath.empty()) {
456     // FIXME: Provide an option for this, and move env detection to driver.
457     llvm::report_fatal_error("Not yet implemented!");
458   }
459   if (!Opts.CXXEnvIncPath.empty()) {
460     // FIXME: Provide an option for this, and move env detection to driver.
461     llvm::report_fatal_error("Not yet implemented!");
462   }
463   if (!Opts.ObjCXXEnvIncPath.empty()) {
464     // FIXME: Provide an option for this, and move env detection to driver.
465     llvm::report_fatal_error("Not yet implemented!");
466   }
467   if (!Opts.ResourceDir.empty()) {
468     Res.push_back("-resource-dir");
469     Res.push_back(Opts.ResourceDir);
470   }
471   if (!Opts.UseStandardIncludes)
472     Res.push_back("-nostdinc");
473   if (!Opts.UseStandardCXXIncludes)
474     Res.push_back("-nostdinc++");
475   if (Opts.Verbose)
476     Res.push_back("-v");
477 }
478 
479 static void LangOptsToArgs(const LangOptions &Opts,
480                            std::vector<std::string> &Res) {
481   LangOptions DefaultLangOpts;
482 
483   // FIXME: Need to set -std to get all the implicit options.
484 
485   // FIXME: We want to only pass options relative to the defaults, which
486   // requires constructing a target. :(
487   //
488   // It would be better to push the all target specific choices into the driver,
489   // so that everything below that was more uniform.
490 
491   if (Opts.Trigraphs)
492     Res.push_back("-trigraphs");
493   // Implicit based on the input kind:
494   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
495   // Implicit based on the input language standard:
496   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
497   if (Opts.DollarIdents)
498     Res.push_back("-fdollars-in-identifiers");
499   if (Opts.GNUMode && !Opts.GNUKeywords)
500     Res.push_back("-fno-gnu-keywords");
501   if (!Opts.GNUMode && Opts.GNUKeywords)
502     Res.push_back("-fgnu-keywords");
503   if (Opts.Microsoft)
504     Res.push_back("-fms-extensions");
505   if (Opts.ObjCNonFragileABI)
506     Res.push_back("-fobjc-nonfragile-abi");
507   if (Opts.ObjCNonFragileABI2)
508     Res.push_back("-fobjc-nonfragile-abi2");
509   // NoInline is implicit.
510   if (!Opts.CXXOperatorNames)
511     Res.push_back("-fno-operator-names");
512   if (Opts.PascalStrings)
513     Res.push_back("-fpascal-strings");
514   if (Opts.CatchUndefined)
515     Res.push_back("-fcatch-undefined-behavior");
516   if (Opts.WritableStrings)
517     Res.push_back("-fwritable-strings");
518   if (Opts.ConstStrings)
519     Res.push_back("-Wwrite-strings");
520   if (!Opts.LaxVectorConversions)
521     Res.push_back("-fno-lax-vector-conversions");
522   if (Opts.AltiVec)
523     Res.push_back("-faltivec");
524   if (Opts.Exceptions)
525     Res.push_back("-fexceptions");
526   if (Opts.SjLjExceptions)
527     Res.push_back("-fsjlj-exceptions");
528   if (!Opts.RTTI)
529     Res.push_back("-fno-rtti");
530   if (!Opts.NeXTRuntime)
531     Res.push_back("-fgnu-runtime");
532   if (Opts.Freestanding)
533     Res.push_back("-ffreestanding");
534   if (Opts.NoBuiltin)
535     Res.push_back("-fno-builtin");
536   if (!Opts.AssumeSaneOperatorNew)
537     Res.push_back("-fno-assume-sane-operator-new");
538   if (!Opts.ThreadsafeStatics)
539     Res.push_back("-fno-threadsafe-statics");
540   if (Opts.POSIXThreads)
541     Res.push_back("-pthread");
542   if (Opts.Blocks)
543     Res.push_back("-fblocks");
544   if (Opts.EmitAllDecls)
545     Res.push_back("-femit-all-decls");
546   if (Opts.MathErrno)
547     Res.push_back("-fmath-errno");
548   if (Opts.OverflowChecking)
549     Res.push_back("-ftrapv");
550   if (Opts.HeinousExtensions)
551     Res.push_back("-fheinous-gnu-extensions");
552   // Optimize is implicit.
553   // OptimizeSize is implicit.
554   if (Opts.Static)
555     Res.push_back("-static-define");
556   if (Opts.DumpRecordLayouts)
557     Res.push_back("-fdump-record-layouts");
558   if (Opts.DumpVTableLayouts)
559     Res.push_back("-fdump-vtable-layouts");
560   if (Opts.NoBitFieldTypeAlign)
561     Res.push_back("-fno-bitfield-type-alignment");
562   if (Opts.SjLjExceptions)
563     Res.push_back("-fsjlj-exceptions");
564   if (Opts.PICLevel) {
565     Res.push_back("-pic-level");
566     Res.push_back(llvm::utostr(Opts.PICLevel));
567   }
568   if (Opts.ObjCGCBitmapPrint)
569     Res.push_back("-print-ivar-layout");
570   if (Opts.NoConstantCFStrings)
571     Res.push_back("-fno-constant-cfstrings");
572   if (!Opts.AccessControl)
573     Res.push_back("-fno-access-control");
574   if (!Opts.CharIsSigned)
575     Res.push_back("-fno-signed-char");
576   if (Opts.ShortWChar)
577     Res.push_back("-fshort-wchar");
578   if (!Opts.ElideConstructors)
579     Res.push_back("-fno-elide-constructors");
580   if (Opts.getGCMode() != LangOptions::NonGC) {
581     if (Opts.getGCMode() == LangOptions::HybridGC) {
582       Res.push_back("-fobjc-gc");
583     } else {
584       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
585       Res.push_back("-fobjc-gc-only");
586     }
587   }
588   if (Opts.getVisibilityMode() != LangOptions::Default) {
589     Res.push_back("-fvisibility");
590     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
591       Res.push_back("hidden");
592     } else {
593       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
594              "Invalid visibility!");
595       Res.push_back("protected");
596     }
597   }
598   if (Opts.getStackProtectorMode() != 0) {
599     Res.push_back("-stack-protector");
600     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
601   }
602   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
603     Res.push_back("-ftemplate-depth");
604     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
605   }
606   if (!Opts.ObjCConstantStringClass.empty()) {
607     Res.push_back("-fconstant-string-class");
608     Res.push_back(Opts.ObjCConstantStringClass);
609   }
610 }
611 
612 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
613                                    std::vector<std::string> &Res) {
614   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
615     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
616                   Opts.Macros[i].first);
617   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
618     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
619     Res.push_back("-include");
620     Res.push_back(Opts.Includes[i]);
621   }
622   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
623     Res.push_back("-imacros");
624     Res.push_back(Opts.MacroIncludes[i]);
625   }
626   if (!Opts.UsePredefines)
627     Res.push_back("-undef");
628   if (Opts.DetailedRecord)
629     Res.push_back("-detailed-preprocessing-record");
630   if (!Opts.ImplicitPCHInclude.empty()) {
631     Res.push_back("-include-pch");
632     Res.push_back(Opts.ImplicitPCHInclude);
633   }
634   if (!Opts.ImplicitPTHInclude.empty()) {
635     Res.push_back("-include-pth");
636     Res.push_back(Opts.ImplicitPTHInclude);
637   }
638   if (!Opts.TokenCache.empty()) {
639     if (Opts.ImplicitPTHInclude.empty()) {
640       Res.push_back("-token-cache");
641       Res.push_back(Opts.TokenCache);
642     } else
643       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
644              "Unsupported option combination!");
645   }
646   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
647     Res.push_back("-remap-file");
648     Res.push_back(Opts.RemappedFiles[i].first + ";" +
649                   Opts.RemappedFiles[i].second);
650   }
651 }
652 
653 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
654                                          std::vector<std::string> &Res) {
655   if (!Opts.ShowCPP && !Opts.ShowMacros)
656     llvm::report_fatal_error("Invalid option combination!");
657 
658   if (Opts.ShowCPP && Opts.ShowMacros)
659     Res.push_back("-dD");
660   else if (!Opts.ShowCPP && Opts.ShowMacros)
661     Res.push_back("-dM");
662 
663   if (!Opts.ShowLineMarkers)
664     Res.push_back("-P");
665   if (Opts.ShowComments)
666     Res.push_back("-C");
667   if (Opts.ShowMacroComments)
668     Res.push_back("-CC");
669 }
670 
671 static void TargetOptsToArgs(const TargetOptions &Opts,
672                              std::vector<std::string> &Res) {
673   Res.push_back("-triple");
674   Res.push_back(Opts.Triple);
675   if (!Opts.CPU.empty()) {
676     Res.push_back("-target-cpu");
677     Res.push_back(Opts.CPU);
678   }
679   if (!Opts.ABI.empty()) {
680     Res.push_back("-target-abi");
681     Res.push_back(Opts.ABI);
682   }
683   Res.push_back("-cxx-abi");
684   Res.push_back(Opts.CXXABI);
685   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
686     Res.push_back("-target-feature");
687     Res.push_back(Opts.Features[i]);
688   }
689 }
690 
691 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
692   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
693   CodeGenOptsToArgs(getCodeGenOpts(), Res);
694   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
695   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
696   FrontendOptsToArgs(getFrontendOpts(), Res);
697   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
698   LangOptsToArgs(getLangOpts(), Res);
699   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
700   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
701   TargetOptsToArgs(getTargetOpts(), Res);
702 }
703 
704 //===----------------------------------------------------------------------===//
705 // Deserialization (to args)
706 //===----------------------------------------------------------------------===//
707 
708 using namespace clang::driver;
709 using namespace clang::driver::cc1options;
710 
711 //
712 
713 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
714                               Diagnostic &Diags) {
715   using namespace cc1options;
716 
717   Opts.AnalysisList.clear();
718 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
719   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
720 #include "clang/Frontend/Analyses.def"
721 
722   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
723     llvm::StringRef Name = A->getValue(Args);
724     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
725 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
726       .Case(CMDFLAG, NAME##Model)
727 #include "clang/Frontend/Analyses.def"
728       .Default(NumStores);
729     // FIXME: Error handling.
730     if (Value == NumStores)
731       Diags.Report(diag::err_drv_invalid_value)
732         << A->getAsString(Args) << Name;
733     else
734       Opts.AnalysisStoreOpt = Value;
735   }
736 
737   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
738     llvm::StringRef Name = A->getValue(Args);
739     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
740 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
741       .Case(CMDFLAG, NAME##Model)
742 #include "clang/Frontend/Analyses.def"
743       .Default(NumConstraints);
744     // FIXME: Error handling.
745     if (Value == NumConstraints)
746       Diags.Report(diag::err_drv_invalid_value)
747         << A->getAsString(Args) << Name;
748     else
749       Opts.AnalysisConstraintsOpt = Value;
750   }
751 
752   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
753     llvm::StringRef Name = A->getValue(Args);
754     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
755 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
756       .Case(CMDFLAG, PD_##NAME)
757 #include "clang/Frontend/Analyses.def"
758       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
759     // FIXME: Error handling.
760     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
761       Diags.Report(diag::err_drv_invalid_value)
762         << A->getAsString(Args) << Name;
763     else
764       Opts.AnalysisDiagOpt = Value;
765   }
766 
767   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
768   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
769   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
770   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
771   Opts.AnalyzeNestedBlocks =
772     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
773   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
774   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
775   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
776   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
777   Opts.EnableExperimentalInternalChecks =
778     Args.hasArg(OPT_analyzer_experimental_internal_checks);
779   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
780   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
781   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
782   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
783 }
784 
785 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
786                              Diagnostic &Diags) {
787   using namespace cc1options;
788   // -Os implies -O2
789   if (Args.hasArg(OPT_Os))
790     Opts.OptimizationLevel = 2;
791   else {
792     Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
793     if (Opts.OptimizationLevel > 3) {
794       Diags.Report(diag::err_drv_invalid_value)
795         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
796       Opts.OptimizationLevel = 3;
797     }
798   }
799 
800   // We must always run at least the always inlining pass.
801   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
802     : CodeGenOptions::OnlyAlwaysInlining;
803 
804   Opts.DebugInfo = Args.hasArg(OPT_g);
805   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
806   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
807   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
808   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
809   Opts.NoCommon = Args.hasArg(OPT_fno_common);
810   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
811   Opts.OptimizeSize = Args.hasArg(OPT_Os);
812   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
813                             Args.hasArg(OPT_ffreestanding));
814   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
815 
816   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
817   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
818   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
819   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
820   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
821   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
822   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
823   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
824   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
825   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
826   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
827   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
828   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
829 
830   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
831   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
832 
833   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
834   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
835 
836   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
837     llvm::StringRef Name = A->getValue(Args);
838     unsigned Method = llvm::StringSwitch<unsigned>(Name)
839       .Case("legacy", CodeGenOptions::Legacy)
840       .Case("non-legacy", CodeGenOptions::NonLegacy)
841       .Case("mixed", CodeGenOptions::Mixed)
842       .Default(~0U);
843     if (Method == ~0U)
844       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
845     else
846       Opts.ObjCDispatchMethod = Method;
847   }
848 }
849 
850 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
851                                       ArgList &Args) {
852   using namespace cc1options;
853   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
854   Opts.Targets = Args.getAllArgValues(OPT_MT);
855   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
856   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
857 }
858 
859 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
860                                 Diagnostic &Diags) {
861   using namespace cc1options;
862   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
863   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
864   Opts.Pedantic = Args.hasArg(OPT_pedantic);
865   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
866   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
867   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
868   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
869   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
870   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
871   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
872 
873   llvm::StringRef ShowCategory =
874     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
875   if (ShowCategory == "none")
876     Opts.ShowCategories = 0;
877   else if (ShowCategory == "id")
878     Opts.ShowCategories = 1;
879   else if (ShowCategory == "name")
880     Opts.ShowCategories = 2;
881   else
882     Diags.Report(diag::err_drv_invalid_value)
883       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
884       << ShowCategory;
885 
886   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
887   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
888   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
889   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
890   Opts.MacroBacktraceLimit
891     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
892                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
893   Opts.TemplateBacktraceLimit
894     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
895                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
896                          Diags);
897   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
898                                     DiagnosticOptions::DefaultTabStop, Diags);
899   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
900     Diags.Report(diag::warn_ignoring_ftabstop_value)
901       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
902     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
903   }
904   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
905   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
906   Opts.Warnings = Args.getAllArgValues(OPT_W);
907 }
908 
909 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
910                                    Diagnostic &Diags) {
911   using namespace cc1options;
912   Opts.ProgramAction = frontend::ParseSyntaxOnly;
913   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
914     switch (A->getOption().getID()) {
915     default:
916       assert(0 && "Invalid option in group!");
917     case OPT_ast_dump:
918       Opts.ProgramAction = frontend::ASTDump; break;
919     case OPT_ast_print:
920       Opts.ProgramAction = frontend::ASTPrint; break;
921     case OPT_ast_print_xml:
922       Opts.ProgramAction = frontend::ASTPrintXML; break;
923     case OPT_ast_view:
924       Opts.ProgramAction = frontend::ASTView; break;
925     case OPT_boostcon:
926       Opts.ProgramAction = frontend::BoostCon; break;
927     case OPT_dump_raw_tokens:
928       Opts.ProgramAction = frontend::DumpRawTokens; break;
929     case OPT_dump_tokens:
930       Opts.ProgramAction = frontend::DumpTokens; break;
931     case OPT_S:
932       Opts.ProgramAction = frontend::EmitAssembly; break;
933     case OPT_emit_llvm_bc:
934       Opts.ProgramAction = frontend::EmitBC; break;
935     case OPT_emit_html:
936       Opts.ProgramAction = frontend::EmitHTML; break;
937     case OPT_emit_llvm:
938       Opts.ProgramAction = frontend::EmitLLVM; break;
939     case OPT_emit_llvm_only:
940       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
941     case OPT_emit_codegen_only:
942       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
943     case OPT_emit_obj:
944       Opts.ProgramAction = frontend::EmitObj; break;
945     case OPT_fixit_EQ:
946       Opts.FixItSuffix = A->getValue(Args);
947       // fall-through!
948     case OPT_fixit:
949       Opts.ProgramAction = frontend::FixIt; break;
950     case OPT_emit_pch:
951       Opts.ProgramAction = frontend::GeneratePCH; break;
952     case OPT_emit_pth:
953       Opts.ProgramAction = frontend::GeneratePTH; break;
954     case OPT_init_only:
955       Opts.ProgramAction = frontend::InitOnly; break;
956     case OPT_parse_noop:
957       Opts.ProgramAction = frontend::ParseNoop; break;
958     case OPT_parse_print_callbacks:
959       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
960     case OPT_fsyntax_only:
961       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
962     case OPT_print_decl_contexts:
963       Opts.ProgramAction = frontend::PrintDeclContext; break;
964     case OPT_E:
965       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
966     case OPT_rewrite_macros:
967       Opts.ProgramAction = frontend::RewriteMacros; break;
968     case OPT_rewrite_objc:
969       Opts.ProgramAction = frontend::RewriteObjC; break;
970     case OPT_rewrite_test:
971       Opts.ProgramAction = frontend::RewriteTest; break;
972     case OPT_analyze:
973       Opts.ProgramAction = frontend::RunAnalysis; break;
974     case OPT_Eonly:
975       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
976     }
977   }
978   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
979     Opts.ProgramAction = frontend::PluginAction;
980     Opts.ActionName = A->getValue(Args);
981   }
982 
983   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
984     Opts.CodeCompletionAt =
985       ParsedSourceLocation::FromString(A->getValue(Args));
986     if (Opts.CodeCompletionAt.FileName.empty())
987       Diags.Report(diag::err_drv_invalid_value)
988         << A->getAsString(Args) << A->getValue(Args);
989   }
990   Opts.DebugCodeCompletionPrinter =
991     !Args.hasArg(OPT_no_code_completion_debug_printer);
992   Opts.DisableFree = Args.hasArg(OPT_disable_free);
993 
994   Opts.OutputFile = Args.getLastArgValue(OPT_o);
995   Opts.Plugins = Args.getAllArgValues(OPT_load);
996   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
997   Opts.ShowHelp = Args.hasArg(OPT_help);
998   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
999   Opts.ShowCodePatternsInCodeCompletion
1000     = Args.hasArg(OPT_code_completion_patterns);
1001   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1002   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1003   Opts.ShowVersion = Args.hasArg(OPT_version);
1004   Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1005   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1006   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1007 
1008   InputKind DashX = IK_None;
1009   if (const Arg *A = Args.getLastArg(OPT_x)) {
1010     DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1011       .Case("c", IK_C)
1012       .Case("cl", IK_OpenCL)
1013       .Case("c", IK_C)
1014       .Case("cl", IK_OpenCL)
1015       .Case("c++", IK_CXX)
1016       .Case("objective-c", IK_ObjC)
1017       .Case("objective-c++", IK_ObjCXX)
1018       .Case("cpp-output", IK_PreprocessedC)
1019       .Case("assembler-with-cpp", IK_Asm)
1020       .Case("c++-cpp-output", IK_PreprocessedCXX)
1021       .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1022       .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1023       .Case("c-header", IK_C)
1024       .Case("objective-c-header", IK_ObjC)
1025       .Case("c++-header", IK_CXX)
1026       .Case("objective-c++-header", IK_ObjCXX)
1027       .Case("ast", IK_AST)
1028       .Case("ir", IK_LLVM_IR)
1029       .Default(IK_None);
1030     if (DashX == IK_None)
1031       Diags.Report(diag::err_drv_invalid_value)
1032         << A->getAsString(Args) << A->getValue(Args);
1033   }
1034 
1035   // '-' is the default input if none is given.
1036   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1037   Opts.Inputs.clear();
1038   if (Inputs.empty())
1039     Inputs.push_back("-");
1040   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1041     InputKind IK = DashX;
1042     if (IK == IK_None) {
1043       IK = FrontendOptions::getInputKindForExtension(
1044         llvm::StringRef(Inputs[i]).rsplit('.').second);
1045       // FIXME: Remove this hack.
1046       if (i == 0)
1047         DashX = IK;
1048     }
1049     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1050   }
1051 
1052   return DashX;
1053 }
1054 
1055 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1056                                                  void *MainAddr) {
1057   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1058 
1059   if (!P.isEmpty()) {
1060     P.eraseComponent();  // Remove /clang from foo/bin/clang
1061     P.eraseComponent();  // Remove /bin   from foo/bin
1062 
1063     // Get foo/lib/clang/<version>/include
1064     P.appendComponent("lib");
1065     P.appendComponent("clang");
1066     P.appendComponent(CLANG_VERSION_STRING);
1067   }
1068 
1069   return P.str();
1070 }
1071 
1072 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1073   using namespace cc1options;
1074   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1075   Opts.Verbose = Args.hasArg(OPT_v);
1076   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1077   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1078   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1079   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1080 
1081   // Add -I... and -F... options in order.
1082   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1083          ie = Args.filtered_end(); it != ie; ++it)
1084     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1085                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1086 
1087   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1088   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1089   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1090                                              OPT_iwithprefixbefore),
1091          ie = Args.filtered_end(); it != ie; ++it) {
1092     if (it->getOption().matches(OPT_iprefix))
1093       Prefix = it->getValue(Args);
1094     else if (it->getOption().matches(OPT_iwithprefix))
1095       Opts.AddPath(Prefix.str() + it->getValue(Args),
1096                    frontend::System, false, false);
1097     else
1098       Opts.AddPath(Prefix.str() + it->getValue(Args),
1099                    frontend::Angled, false, false);
1100   }
1101 
1102   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1103          ie = Args.filtered_end(); it != ie; ++it)
1104     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1105   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1106          ie = Args.filtered_end(); it != ie; ++it)
1107     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1108   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1109          ie = Args.filtered_end(); it != ie; ++it)
1110     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1111 
1112   // FIXME: Need options for the various environment variables!
1113 }
1114 
1115 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1116                           Diagnostic &Diags) {
1117   // FIXME: Cleanup per-file based stuff.
1118 
1119   // Set some properties which depend soley on the input kind; it would be nice
1120   // to move these to the language standard, and have the driver resolve the
1121   // input kind + language standard.
1122   if (IK == IK_Asm) {
1123     Opts.AsmPreprocessor = 1;
1124   } else if (IK == IK_ObjC ||
1125              IK == IK_ObjCXX ||
1126              IK == IK_PreprocessedObjC ||
1127              IK == IK_PreprocessedObjCXX) {
1128     Opts.ObjC1 = Opts.ObjC2 = 1;
1129   }
1130 
1131   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1132   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1133     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1134 #define LANGSTANDARD(id, name, desc, features) \
1135       .Case(name, LangStandard::lang_##id)
1136 #include "clang/Frontend/LangStandards.def"
1137       .Default(LangStandard::lang_unspecified);
1138     if (LangStd == LangStandard::lang_unspecified)
1139       Diags.Report(diag::err_drv_invalid_value)
1140         << A->getAsString(Args) << A->getValue(Args);
1141   }
1142 
1143   if (LangStd == LangStandard::lang_unspecified) {
1144     // Based on the base language, pick one.
1145     switch (IK) {
1146     case IK_None:
1147     case IK_AST:
1148     case IK_LLVM_IR:
1149       assert(0 && "Invalid input kind!");
1150     case IK_OpenCL:
1151       LangStd = LangStandard::lang_opencl;
1152       break;
1153     case IK_Asm:
1154     case IK_C:
1155     case IK_PreprocessedC:
1156     case IK_ObjC:
1157     case IK_PreprocessedObjC:
1158       LangStd = LangStandard::lang_gnu99;
1159       break;
1160     case IK_CXX:
1161     case IK_PreprocessedCXX:
1162     case IK_ObjCXX:
1163     case IK_PreprocessedObjCXX:
1164       LangStd = LangStandard::lang_gnucxx98;
1165       break;
1166     }
1167   }
1168 
1169   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1170   Opts.BCPLComment = Std.hasBCPLComments();
1171   Opts.C99 = Std.isC99();
1172   Opts.CPlusPlus = Std.isCPlusPlus();
1173   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1174   Opts.Digraphs = Std.hasDigraphs();
1175   Opts.GNUMode = Std.isGNUMode();
1176   Opts.GNUInline = !Std.isC99();
1177   Opts.HexFloats = Std.hasHexFloats();
1178   Opts.ImplicitInt = Std.hasImplicitInt();
1179 
1180   // OpenCL has some additional defaults.
1181   if (LangStd == LangStandard::lang_opencl) {
1182     Opts.OpenCL = 1;
1183     Opts.AltiVec = 1;
1184     Opts.CXXOperatorNames = 1;
1185     Opts.LaxVectorConversions = 1;
1186   }
1187 
1188   // OpenCL and C++ both have bool, true, false keywords.
1189   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1190 
1191   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1192   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1193   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1194   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1195   // name, as it doesn't seem a useful distinction.
1196   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1197                                   Opts.GNUMode);
1198 
1199   if (Opts.CPlusPlus)
1200     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1201 
1202   if (Args.hasArg(OPT_fobjc_gc_only))
1203     Opts.setGCMode(LangOptions::GCOnly);
1204   else if (Args.hasArg(OPT_fobjc_gc))
1205     Opts.setGCMode(LangOptions::HybridGC);
1206 
1207   if (Args.hasArg(OPT_print_ivar_layout))
1208     Opts.ObjCGCBitmapPrint = 1;
1209   if (Args.hasArg(OPT_fno_constant_cfstrings))
1210     Opts.NoConstantCFStrings = 1;
1211 
1212   if (Args.hasArg(OPT_faltivec))
1213     Opts.AltiVec = 1;
1214 
1215   if (Args.hasArg(OPT_pthread))
1216     Opts.POSIXThreads = 1;
1217 
1218   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1219   if (Vis == "default")
1220     Opts.setVisibilityMode(LangOptions::Default);
1221   else if (Vis == "hidden")
1222     Opts.setVisibilityMode(LangOptions::Hidden);
1223   else if (Vis == "protected")
1224     Opts.setVisibilityMode(LangOptions::Protected);
1225   else
1226     Diags.Report(diag::err_drv_invalid_value)
1227       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1228 
1229   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1230 
1231   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1232   // is specified, or -std is set to a conforming mode.
1233   Opts.Trigraphs = !Opts.GNUMode;
1234   if (Args.hasArg(OPT_trigraphs))
1235     Opts.Trigraphs = 1;
1236 
1237   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1238                                    OPT_fno_dollars_in_identifiers,
1239                                    !Opts.AsmPreprocessor);
1240   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1241   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1242   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1243   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1244   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1245     Opts.LaxVectorConversions = 0;
1246   if (Args.hasArg(OPT_fno_threadsafe_statics))
1247     Opts.ThreadsafeStatics = 0;
1248   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1249   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1250   Opts.Blocks = Args.hasArg(OPT_fblocks);
1251   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1252   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1253   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1254   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1255   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1256   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1257   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1258   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1259   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1260   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1261                                                Diags);
1262   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1263   Opts.ObjCConstantStringClass =
1264     Args.getLastArgValue(OPT_fconstant_string_class);
1265   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1266   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1267   if (Opts.ObjCNonFragileABI2)
1268     Opts.ObjCNonFragileABI = true;
1269   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1270   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1271   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1272   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1273   Opts.Static = Args.hasArg(OPT_static_define);
1274   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1275   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1276   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1277   Opts.OptimizeSize = 0;
1278 
1279   // FIXME: Eliminate this dependency.
1280   unsigned Opt =
1281     Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1282   Opts.Optimize = Opt != 0;
1283 
1284   // This is the __NO_INLINE__ define, which just depends on things like the
1285   // optimization level and -fno-inline, not actually whether the backend has
1286   // inlining enabled.
1287   //
1288   // FIXME: This is affected by other options (-fno-inline).
1289   Opts.NoInline = !Opt;
1290 
1291   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1292   switch (SSP) {
1293   default:
1294     Diags.Report(diag::err_drv_invalid_value)
1295       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1296     break;
1297   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1298   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1299   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1300   }
1301 }
1302 
1303 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1304                                   Diagnostic &Diags) {
1305   using namespace cc1options;
1306   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1307   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1308   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1309       Opts.TokenCache = A->getValue(Args);
1310   else
1311     Opts.TokenCache = Opts.ImplicitPTHInclude;
1312   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1313   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1314   // Add macros from the command line.
1315   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1316          ie = Args.filtered_end(); it != ie; ++it) {
1317     if (it->getOption().matches(OPT_D))
1318       Opts.addMacroDef(it->getValue(Args));
1319     else
1320       Opts.addMacroUndef(it->getValue(Args));
1321   }
1322 
1323   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1324 
1325   // Add the ordered list of -includes.
1326   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1327                                              OPT_include_pth),
1328          ie = Args.filtered_end(); it != ie; ++it) {
1329     // PCH is handled specially, we need to extra the original include path.
1330     if (it->getOption().matches(OPT_include_pch)) {
1331       std::string OriginalFile =
1332         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1333       if (OriginalFile.empty())
1334         continue;
1335 
1336       Opts.Includes.push_back(OriginalFile);
1337     } else
1338       Opts.Includes.push_back(it->getValue(Args));
1339   }
1340 
1341   // Include 'altivec.h' if -faltivec option present
1342   if (Args.hasArg(OPT_faltivec))
1343     Opts.Includes.push_back("altivec.h");
1344 
1345   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1346          ie = Args.filtered_end(); it != ie; ++it) {
1347     std::pair<llvm::StringRef,llvm::StringRef> Split =
1348       llvm::StringRef(it->getValue(Args)).split(';');
1349 
1350     if (Split.second.empty()) {
1351       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1352       continue;
1353     }
1354 
1355     Opts.addRemappedFile(Split.first, Split.second);
1356   }
1357 }
1358 
1359 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1360                                         ArgList &Args) {
1361   using namespace cc1options;
1362   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1363   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1364   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1365   Opts.ShowComments = Args.hasArg(OPT_C);
1366   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1367 }
1368 
1369 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1370   using namespace cc1options;
1371   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1372   Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1373   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1374   Opts.Triple = Args.getLastArgValue(OPT_triple);
1375   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1376 
1377   // Use the host triple if unspecified.
1378   if (Opts.Triple.empty())
1379     Opts.Triple = llvm::sys::getHostTriple();
1380 
1381   // Use the Itanium C++ ABI if unspecified.
1382   if (Opts.CXXABI.empty())
1383     Opts.CXXABI = "itanium";
1384 }
1385 
1386 //
1387 
1388 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1389                                         const char **ArgBegin,
1390                                         const char **ArgEnd,
1391                                         Diagnostic &Diags) {
1392   // Parse the arguments.
1393   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1394   unsigned MissingArgIndex, MissingArgCount;
1395   llvm::OwningPtr<InputArgList> Args(
1396     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1397 
1398   // Check for missing argument error.
1399   if (MissingArgCount)
1400     Diags.Report(diag::err_drv_missing_argument)
1401       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1402 
1403   // Issue errors on unknown arguments.
1404   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1405          ie = Args->filtered_end(); it != ie; ++it)
1406     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1407 
1408   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1409   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1410   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1411   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1412   InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1413   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1414   if (DashX != IK_AST && DashX != IK_LLVM_IR)
1415     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1416   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1417   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1418   ParseTargetArgs(Res.getTargetOpts(), *Args);
1419 }
1420