xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 6818991d7165f68fe196922d9e5c6648dd57cc47) 
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::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::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::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::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.MergeAllConstants)
126     Res.push_back("-fno-merge-all-constants");
127   if (Opts.NoCommon)
128     Res.push_back("-fno-common");
129   if (Opts.NoImplicitFloat)
130     Res.push_back("-no-implicit-float");
131   if (Opts.OptimizeSize) {
132     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
133     Res.push_back("-Os");
134   } else if (Opts.OptimizationLevel != 0)
135     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
136   if (!Opts.MainFileName.empty()) {
137     Res.push_back("-main-file-name");
138     Res.push_back(Opts.MainFileName);
139   }
140   // SimplifyLibCalls is only derived.
141   // TimePasses is only derived.
142   // UnitAtATime is unused.
143   // UnrollLoops is only derived.
144   // VerifyModule is only derived.
145   // Inlining is only derived.
146 
147   if (Opts.AsmVerbose)
148     Res.push_back("-masm-verbose");
149   if (!Opts.CodeModel.empty()) {
150     Res.push_back("-mcode-model");
151     Res.push_back(Opts.CodeModel);
152   }
153   if (!Opts.DebugPass.empty()) {
154     Res.push_back("-mdebug-pass");
155     Res.push_back(Opts.DebugPass);
156   }
157   if (Opts.DisableFPElim)
158     Res.push_back("-mdisable-fp-elim");
159   if (!Opts.FloatABI.empty()) {
160     Res.push_back("-mfloat-abi");
161     Res.push_back(Opts.FloatABI);
162   }
163   if (!Opts.LimitFloatPrecision.empty()) {
164     Res.push_back("-mlimit-float-precision");
165     Res.push_back(Opts.LimitFloatPrecision);
166   }
167   if (Opts.NoZeroInitializedInBSS)
168     Res.push_back("-mno-zero-initialized-bss");
169   if (Opts.SoftFloat)
170     Res.push_back("-msoft-float");
171   if (Opts.UnwindTables)
172     Res.push_back("-munwind-tables");
173   if (Opts.RelocationModel != "pic") {
174     Res.push_back("-mrelocation-model");
175     Res.push_back(Opts.RelocationModel);
176   }
177 }
178 
179 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
180                                        std::vector<std::string> &Res) {
181   if (Opts.IncludeSystemHeaders)
182     Res.push_back("-sys-header-deps");
183   if (Opts.UsePhonyTargets)
184     Res.push_back("-MP");
185   if (!Opts.OutputFile.empty()) {
186     Res.push_back("-dependency-file");
187     Res.push_back(Opts.OutputFile);
188   }
189   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
190     Res.push_back("-MT");
191     Res.push_back(Opts.Targets[i]);
192   }
193 }
194 
195 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
196                                  std::vector<std::string> &Res) {
197   if (Opts.IgnoreWarnings)
198     Res.push_back("-w");
199   if (Opts.NoRewriteMacros)
200     Res.push_back("-Wno-rewrite-macros");
201   if (Opts.Pedantic)
202     Res.push_back("-pedantic");
203   if (Opts.PedanticErrors)
204     Res.push_back("-pedantic-errors");
205   if (!Opts.ShowColumn)
206     Res.push_back("-fno-show-column");
207   if (!Opts.ShowLocation)
208     Res.push_back("-fno-show-source-location");
209   if (!Opts.ShowCarets)
210     Res.push_back("-fno-caret-diagnostics");
211   if (!Opts.ShowFixits)
212     Res.push_back("-fno-diagnostics-fixit-info");
213   if (Opts.ShowSourceRanges)
214     Res.push_back("-fdiagnostics-print-source-range-info");
215   if (Opts.ShowColors)
216     Res.push_back("-fcolor-diagnostics");
217   if (Opts.VerifyDiagnostics)
218     Res.push_back("-verify");
219   if (Opts.ShowOptionNames)
220     Res.push_back("-fdiagnostics-show-option");
221   if (Opts.MessageLength) {
222     Res.push_back("-fmessage-length");
223     Res.push_back(llvm::utostr(Opts.MessageLength));
224   }
225   if (!Opts.DumpBuildInformation.empty()) {
226     Res.push_back("-dump-build-information");
227     Res.push_back(Opts.DumpBuildInformation);
228   }
229   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
230     Res.push_back("-W" + Opts.Warnings[i]);
231 }
232 
233 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
234   switch (Kind) {
235   case FrontendOptions::IK_None:              break;
236   case FrontendOptions::IK_AST:               return "ast";
237   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
238   case FrontendOptions::IK_C:                 return "c";
239   case FrontendOptions::IK_CXX:               return "c++";
240   case FrontendOptions::IK_ObjC:              return "objective-c";
241   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
242   case FrontendOptions::IK_OpenCL:            return "cl";
243   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
244   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
245   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
246   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
247   }
248 
249   llvm::llvm_unreachable("Unexpected language kind!");
250   return 0;
251 }
252 
253 static const char *getActionName(frontend::ActionKind Kind) {
254   switch (Kind) {
255   case frontend::PluginAction:
256   case frontend::InheritanceView:
257     llvm::llvm_unreachable("Invalid kind!");
258 
259   case frontend::ASTDump:                return "-ast-dump";
260   case frontend::ASTPrint:               return "-ast-print";
261   case frontend::ASTPrintXML:            return "-ast-print-xml";
262   case frontend::ASTView:                return "-ast-view";
263   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
264   case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
265   case frontend::DumpTokens:             return "-dump-tokens";
266   case frontend::EmitAssembly:           return "-S";
267   case frontend::EmitBC:                 return "-emit-llvm-bc";
268   case frontend::EmitHTML:               return "-emit-html";
269   case frontend::EmitLLVM:               return "-emit-llvm";
270   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
271   case frontend::FixIt:                  return "-fixit";
272   case frontend::GeneratePCH:            return "-emit-pch";
273   case frontend::GeneratePTH:            return "-emit-pth";
274   case frontend::ParseNoop:              return "-parse-noop";
275   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
276   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
277   case frontend::PrintDeclContext:       return "-print-decl-contexts";
278   case frontend::PrintPreprocessedInput: return "-E";
279   case frontend::RewriteBlocks:          return "-rewrite-blocks";
280   case frontend::RewriteMacros:          return "-rewrite-macros";
281   case frontend::RewriteObjC:            return "-rewrite-objc";
282   case frontend::RewriteTest:            return "-rewrite-test";
283   case frontend::RunAnalysis:            return "-analyze";
284   case frontend::RunPreprocessorOnly:    return "-Eonly";
285   }
286 
287   llvm::llvm_unreachable("Unexpected language kind!");
288   return 0;
289 }
290 
291 static void FrontendOptsToArgs(const FrontendOptions &Opts,
292                                std::vector<std::string> &Res) {
293   if (!Opts.DebugCodeCompletionPrinter)
294     Res.push_back("-no-code-completion-debug-printer");
295   if (Opts.DisableFree)
296     Res.push_back("-disable-free");
297   if (Opts.EmptyInputOnly)
298     Res.push_back("-empty-input-only");
299   if (Opts.RelocatablePCH)
300     Res.push_back("-relocatable-pch");
301   if (Opts.ShowHelp)
302     Res.push_back("-help");
303   if (Opts.ShowMacrosInCodeCompletion)
304     Res.push_back("-code-completion-macros");
305   if (Opts.ShowStats)
306     Res.push_back("-print-stats");
307   if (Opts.ShowTimers)
308     Res.push_back("-ftime-report");
309   if (Opts.ShowVersion)
310     Res.push_back("-version");
311 
312   bool NeedLang = false;
313   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
314     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
315         Opts.Inputs[i].first)
316       NeedLang = true;
317   if (NeedLang) {
318     Res.push_back("-x");
319     Res.push_back(getInputKindName(Opts.Inputs[0].first));
320   }
321   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
322     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
323            "Unable to represent this input vector!");
324     Res.push_back(Opts.Inputs[i].second);
325   }
326 
327   if (!Opts.OutputFile.empty()) {
328     Res.push_back("-o");
329     Res.push_back(Opts.OutputFile);
330   }
331   if (!Opts.ViewClassInheritance.empty()) {
332     Res.push_back("-cxx-inheritance-view");
333     Res.push_back(Opts.ViewClassInheritance);
334   }
335   for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
336     Res.push_back("-fixit-at");
337     Res.push_back(Opts.FixItLocations[i].FileName + ":" +
338                   llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
339                   llvm::utostr(Opts.FixItLocations[i].Column));
340   }
341   if (!Opts.CodeCompletionAt.FileName.empty()) {
342     Res.push_back("-code-completion-at");
343     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
344                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
345                   llvm::utostr(Opts.CodeCompletionAt.Column));
346   }
347   if (Opts.ProgramAction != frontend::InheritanceView &&
348       Opts.ProgramAction != frontend::PluginAction)
349     Res.push_back(getActionName(Opts.ProgramAction));
350   if (!Opts.ActionName.empty()) {
351     Res.push_back("-plugin");
352     Res.push_back(Opts.ActionName);
353   }
354   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
355     Res.push_back("-load");
356     Res.push_back(Opts.Plugins[i]);
357   }
358 }
359 
360 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
361                                    std::vector<std::string> &Res) {
362   if (Opts.Sysroot != "/") {
363     Res.push_back("-isysroot");
364     Res.push_back(Opts.Sysroot);
365   }
366 
367   /// User specified include entries.
368   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
369     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
370     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
371       llvm::llvm_report_error("Invalid option set!");
372     if (E.IsUserSupplied) {
373       if (E.Group == frontend::After) {
374         Res.push_back("-idirafter");
375       } else if (E.Group == frontend::Quoted) {
376         Res.push_back("-iquote");
377       } else if (E.Group == frontend::System) {
378         Res.push_back("-isystem");
379       } else {
380         assert(E.Group == frontend::Angled && "Invalid group!");
381         Res.push_back(E.IsFramework ? "-F" : "-I");
382       }
383     } else {
384       if (E.Group != frontend::Angled && E.Group != frontend::System)
385         llvm::llvm_report_error("Invalid option set!");
386       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
387                     "-iwithprefix");
388     }
389     Res.push_back(E.Path);
390   }
391 
392   if (!Opts.EnvIncPath.empty()) {
393     // FIXME: Provide an option for this, and move env detection to driver.
394     llvm::llvm_report_error("Not yet implemented!");
395   }
396   if (!Opts.CEnvIncPath.empty()) {
397     // FIXME: Provide an option for this, and move env detection to driver.
398     llvm::llvm_report_error("Not yet implemented!");
399   }
400   if (!Opts.ObjCEnvIncPath.empty()) {
401     // FIXME: Provide an option for this, and move env detection to driver.
402     llvm::llvm_report_error("Not yet implemented!");
403   }
404   if (!Opts.CXXEnvIncPath.empty()) {
405     // FIXME: Provide an option for this, and move env detection to driver.
406     llvm::llvm_report_error("Not yet implemented!");
407   }
408   if (!Opts.ObjCXXEnvIncPath.empty()) {
409     // FIXME: Provide an option for this, and move env detection to driver.
410     llvm::llvm_report_error("Not yet implemented!");
411   }
412   if (!Opts.BuiltinIncludePath.empty()) {
413     // FIXME: Provide an option for this, and move to driver.
414   }
415   if (!Opts.UseStandardIncludes)
416     Res.push_back("-nostdinc");
417   if (Opts.Verbose)
418     Res.push_back("-v");
419 }
420 
421 static void LangOptsToArgs(const LangOptions &Opts,
422                            std::vector<std::string> &Res) {
423   LangOptions DefaultLangOpts;
424 
425   // FIXME: Need to set -std to get all the implicit options.
426 
427   // FIXME: We want to only pass options relative to the defaults, which
428   // requires constructing a target. :(
429   //
430   // It would be better to push the all target specific choices into the driver,
431   // so that everything below that was more uniform.
432 
433   if (Opts.Trigraphs)
434     Res.push_back("-trigraphs");
435   // Implicit based on the input kind:
436   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
437   // Implicit based on the input language standard:
438   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
439   if (Opts.DollarIdents)
440     Res.push_back("-fdollars-in-identifiers");
441   if (Opts.Microsoft)
442     Res.push_back("-fms-extensions=1");
443   if (Opts.ObjCNonFragileABI)
444     Res.push_back("-fobjc-nonfragile-abi");
445   // NoInline is implicit.
446   if (!Opts.CXXOperatorNames)
447     Res.push_back("-fno-operator-names");
448   if (Opts.PascalStrings)
449     Res.push_back("-fpascal-strings");
450   if (Opts.WritableStrings)
451     Res.push_back("-fwritable-strings");
452   if (!Opts.LaxVectorConversions)
453     Res.push_back("-fno-lax-vector-conversions");
454   if (Opts.AltiVec)
455     Res.push_back("-faltivec");
456   if (Opts.Exceptions)
457     Res.push_back("-fexceptions");
458   if (!Opts.RTTI)
459     Res.push_back("-fno-rtti");
460   if (!Opts.NeXTRuntime)
461     Res.push_back("-fgnu-runtime");
462   if (Opts.Freestanding)
463     Res.push_back("-ffreestanding");
464   if (Opts.NoBuiltin)
465     Res.push_back("-fno-builtin");
466   if (Opts.ThreadsafeStatics)
467     llvm::llvm_report_error("FIXME: Not yet implemented!");
468   if (Opts.POSIXThreads)
469     Res.push_back("-pthread");
470   if (Opts.Blocks)
471     Res.push_back("-fblocks");
472   if (Opts.EmitAllDecls)
473     Res.push_back("-femit-all-decls");
474   if (!Opts.MathErrno)
475     Res.push_back("-fno-math-errno");
476   if (Opts.OverflowChecking)
477     Res.push_back("-ftrapv");
478   if (Opts.HeinousExtensions)
479     Res.push_back("-fheinous-gnu-extensions");
480   // Optimize is implicit.
481   // OptimizeSize is implicit.
482   if (Opts.Static)
483     Res.push_back("-static-define");
484   if (Opts.PICLevel) {
485     Res.push_back("-pic-level");
486     Res.push_back(llvm::utostr(Opts.PICLevel));
487   }
488   if (Opts.ObjCGCBitmapPrint)
489     Res.push_back("-print-ivar-layout");
490   // FIXME: Don't forget to update when the default changes!
491   if (Opts.AccessControl)
492     Res.push_back("-faccess-control");
493   if (!Opts.CharIsSigned)
494     Res.push_back("-fno-signed-char");
495   if (Opts.ShortWChar)
496     Res.push_back("-fshort-wchar");
497   if (!Opts.ElideConstructors)
498     Res.push_back("-fno-elide-constructors");
499   if (Opts.getGCMode() != LangOptions::NonGC) {
500     if (Opts.getGCMode() == LangOptions::HybridGC) {
501       Res.push_back("-fobjc-gc");
502     } else {
503       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
504       Res.push_back("-fobjc-gc-only");
505     }
506   }
507   if (Opts.getVisibilityMode() != LangOptions::Default) {
508     Res.push_back("-fvisibility");
509     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
510       Res.push_back("hidden");
511     } else {
512       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
513              "Invalid visibility!");
514       Res.push_back("protected");
515     }
516   }
517   if (Opts.getStackProtectorMode() != 0) {
518     Res.push_back("-stack-protector");
519     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
520   }
521   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
522     Res.push_back("-ftemplate-depth");
523     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
524   }
525   if (!Opts.ObjCConstantStringClass.empty()) {
526     Res.push_back("-fconstant-string-class");
527     Res.push_back(Opts.ObjCConstantStringClass);
528   }
529 }
530 
531 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
532                                    std::vector<std::string> &Res) {
533   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
534     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
535                   Opts.Macros[i].first);
536   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
537     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
538     Res.push_back("-include");
539     Res.push_back(Opts.Includes[i]);
540   }
541   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
542     Res.push_back("-imacros");
543     Res.push_back(Opts.MacroIncludes[i]);
544   }
545   if (!Opts.UsePredefines)
546     Res.push_back("-undef");
547   if (!Opts.ImplicitPCHInclude.empty()) {
548     Res.push_back("-include-pch");
549     Res.push_back(Opts.ImplicitPCHInclude);
550   }
551   if (!Opts.ImplicitPTHInclude.empty()) {
552     Res.push_back("-include-pth");
553     Res.push_back(Opts.ImplicitPTHInclude);
554   }
555   if (!Opts.TokenCache.empty()) {
556     if (Opts.ImplicitPTHInclude.empty()) {
557       Res.push_back("-token-cache");
558       Res.push_back(Opts.TokenCache);
559     } else
560       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
561              "Unsupported option combination!");
562   }
563   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
564     Res.push_back("-remap-file");
565     Res.push_back(Opts.RemappedFiles[i].first + ";" +
566                   Opts.RemappedFiles[i].second);
567   }
568 }
569 
570 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
571                                          std::vector<std::string> &Res) {
572   if (!Opts.ShowCPP && !Opts.ShowMacros)
573     llvm::llvm_report_error("Invalid option combination!");
574 
575   if (Opts.ShowCPP && Opts.ShowMacros)
576     Res.push_back("-dD");
577   else if (!Opts.ShowCPP && Opts.ShowMacros)
578     Res.push_back("-dM");
579 
580   if (!Opts.ShowLineMarkers)
581     Res.push_back("-P");
582   if (Opts.ShowComments)
583     Res.push_back("-C");
584   if (Opts.ShowMacroComments)
585     Res.push_back("-CC");
586 }
587 
588 static void TargetOptsToArgs(const TargetOptions &Opts,
589                              std::vector<std::string> &Res) {
590   Res.push_back("-triple");
591   Res.push_back(Opts.Triple);
592   if (!Opts.CPU.empty()) {
593     Res.push_back("-mcpu");
594     Res.push_back(Opts.CPU);
595   }
596   if (!Opts.ABI.empty()) {
597     Res.push_back("-target-abi");
598     Res.push_back(Opts.ABI);
599   }
600   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
601     Res.push_back("-target-feature");
602     Res.push_back(Opts.Features[i]);
603   }
604 }
605 
606 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
607   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
608   CodeGenOptsToArgs(getCodeGenOpts(), Res);
609   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
610   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
611   FrontendOptsToArgs(getFrontendOpts(), Res);
612   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
613   LangOptsToArgs(getLangOpts(), Res);
614   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
615   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
616   TargetOptsToArgs(getTargetOpts(), Res);
617 }
618 
619 //===----------------------------------------------------------------------===//
620 // Deserialization (to args)
621 //===----------------------------------------------------------------------===//
622 
623 using namespace clang::driver;
624 using namespace clang::driver::cc1options;
625 
626 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
627                                        llvm::StringRef Default = "") {
628   if (Arg *A = Args.getLastArg(ID))
629     return A->getValue(Args);
630   return Default;
631 }
632 
633 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
634                               int Default, Diagnostic &Diags) {
635   Arg *A = Args.getLastArg(ID);
636   if (!A)
637     return Default;
638 
639   int Res = Default;
640   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
641     Diags.Report(diag::err_drv_invalid_int_value)
642         << A->getAsString(Args) << A->getValue(Args);
643 
644   return Res;
645 }
646 
647 static std::vector<std::string>
648 getAllArgValues(ArgList &Args, cc1options::ID ID) {
649   llvm::SmallVector<const char *, 16> Values;
650   Args.AddAllArgValues(Values, ID);
651   return std::vector<std::string>(Values.begin(), Values.end());
652 }
653 
654 //
655 
656 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
657                               Diagnostic &Diags) {
658   using namespace cc1options;
659 
660   Opts.AnalysisList.clear();
661 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
662   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
663 #include "clang/Frontend/Analyses.def"
664 
665   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
666     llvm::StringRef Name = A->getValue(Args);
667     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
668 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
669       .Case(CMDFLAG, NAME##Model)
670 #include "clang/Frontend/Analyses.def"
671       .Default(NumStores);
672     // FIXME: Error handling.
673     if (Value == NumStores)
674       Diags.Report(diag::err_drv_invalid_value)
675         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
676     else
677       Opts.AnalysisStoreOpt = Value;
678   }
679 
680   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
681     llvm::StringRef Name = A->getValue(Args);
682     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
683 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
684       .Case(CMDFLAG, NAME##Model)
685 #include "clang/Frontend/Analyses.def"
686       .Default(NumConstraints);
687     // FIXME: Error handling.
688     if (Value == NumConstraints)
689       Diags.Report(diag::err_drv_invalid_value)
690         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
691     else
692       Opts.AnalysisConstraintsOpt = Value;
693   }
694 
695   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
696     llvm::StringRef Name = A->getValue(Args);
697     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
698 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
699       .Case(CMDFLAG, PD_##NAME)
700 #include "clang/Frontend/Analyses.def"
701       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
702     // FIXME: Error handling.
703     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
704       Diags.Report(diag::err_drv_invalid_value)
705         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
706     else
707       Opts.AnalysisDiagOpt = Value;
708   }
709 
710   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
711   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
712   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
713   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
714   Opts.AnalyzeNestedBlocks =
715     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
716   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
717   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
718   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
719   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
720   Opts.EnableExperimentalInternalChecks =
721     Args.hasArg(OPT_analyzer_experimental_internal_checks);
722   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
723 }
724 
725 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
726                              Diagnostic &Diags) {
727   using namespace cc1options;
728   // -Os implies -O2
729   if (Args.hasArg(OPT_Os))
730     Opts.OptimizationLevel = 2;
731   else {
732     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
733     if (Opts.OptimizationLevel > 3) {
734       Diags.Report(diag::err_drv_invalid_value)
735         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
736       Opts.OptimizationLevel = 3;
737     }
738   }
739 
740   // We must always run at least the always inlining pass.
741   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
742     : CodeGenOptions::OnlyAlwaysInlining;
743 
744   Opts.DebugInfo = Args.hasArg(OPT_g);
745   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
746   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
747   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
748   Opts.NoCommon = Args.hasArg(OPT_fno_common);
749   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
750   Opts.OptimizeSize = Args.hasArg(OPT_Os);
751   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
752 
753   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
754   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
755   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
756   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
757   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
758   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
759   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
760   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
761   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
762   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
763 
764   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
765 
766   // FIXME: Put elsewhere?
767 #ifdef NDEBUG
768   Opts.VerifyModule = 0;
769 #else
770   Opts.VerifyModule = 1;
771 #endif
772 }
773 
774 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
775                                       ArgList &Args) {
776   using namespace cc1options;
777   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
778   Opts.Targets = getAllArgValues(Args, OPT_MT);
779   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
780   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
781 }
782 
783 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
784                                 Diagnostic &Diags) {
785   using namespace cc1options;
786   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
787   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
788   Opts.Pedantic = Args.hasArg(OPT_pedantic);
789   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
790   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
791   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
792   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
793   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
794   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
795   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
796   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
797   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
798   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
799   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
800   Opts.Warnings = getAllArgValues(Args, OPT_W);
801 }
802 
803 static FrontendOptions::InputKind
804 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
805   using namespace cc1options;
806   Opts.ProgramAction = frontend::ParseSyntaxOnly;
807   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
808     switch (A->getOption().getID()) {
809     default:
810       assert(0 && "Invalid option in group!");
811     case OPT_ast_dump:
812       Opts.ProgramAction = frontend::ASTDump; break;
813     case OPT_ast_print:
814       Opts.ProgramAction = frontend::ASTPrint; break;
815     case OPT_ast_print_xml:
816       Opts.ProgramAction = frontend::ASTPrintXML; break;
817     case OPT_ast_view:
818       Opts.ProgramAction = frontend::ASTView; break;
819     case OPT_dump_raw_tokens:
820       Opts.ProgramAction = frontend::DumpRawTokens; break;
821     case OPT_dump_record_layouts:
822       Opts.ProgramAction = frontend::DumpRecordLayouts; break;
823     case OPT_dump_tokens:
824       Opts.ProgramAction = frontend::DumpTokens; break;
825     case OPT_S:
826       Opts.ProgramAction = frontend::EmitAssembly; break;
827     case OPT_emit_llvm_bc:
828       Opts.ProgramAction = frontend::EmitBC; break;
829     case OPT_emit_html:
830       Opts.ProgramAction = frontend::EmitHTML; break;
831     case OPT_emit_llvm:
832       Opts.ProgramAction = frontend::EmitLLVM; break;
833     case OPT_emit_llvm_only:
834       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
835     case OPT_fixit:
836       Opts.ProgramAction = frontend::FixIt; break;
837     case OPT_emit_pch:
838       Opts.ProgramAction = frontend::GeneratePCH; break;
839     case OPT_emit_pth:
840       Opts.ProgramAction = frontend::GeneratePTH; break;
841     case OPT_parse_noop:
842       Opts.ProgramAction = frontend::ParseNoop; break;
843     case OPT_parse_print_callbacks:
844       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
845     case OPT_fsyntax_only:
846       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
847     case OPT_print_decl_contexts:
848       Opts.ProgramAction = frontend::PrintDeclContext; break;
849     case OPT_E:
850       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
851     case OPT_rewrite_blocks:
852       Opts.ProgramAction = frontend::RewriteBlocks; break;
853     case OPT_rewrite_macros:
854       Opts.ProgramAction = frontend::RewriteMacros; break;
855     case OPT_rewrite_objc:
856       Opts.ProgramAction = frontend::RewriteObjC; break;
857     case OPT_rewrite_test:
858       Opts.ProgramAction = frontend::RewriteTest; break;
859     case OPT_analyze:
860       Opts.ProgramAction = frontend::RunAnalysis; break;
861     case OPT_Eonly:
862       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
863     }
864   }
865   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
866     Opts.ProgramAction = frontend::PluginAction;
867     Opts.ActionName = A->getValue(Args);
868   }
869 
870   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
871     Opts.CodeCompletionAt =
872       ParsedSourceLocation::FromString(A->getValue(Args));
873     if (Opts.CodeCompletionAt.FileName.empty())
874       Diags.Report(diag::err_drv_invalid_value)
875         << A->getAsString(Args) << A->getValue(Args);
876   }
877   Opts.DebugCodeCompletionPrinter =
878     !Args.hasArg(OPT_no_code_completion_debug_printer);
879   Opts.DisableFree = Args.hasArg(OPT_disable_free);
880   Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
881 
882   Opts.FixItLocations.clear();
883   for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
884          ie = Args.filtered_end(); it != ie; ++it) {
885     const char *Loc = it->getValue(Args);
886     ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
887 
888     if (PSL.FileName.empty()) {
889       Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
890       continue;
891     }
892 
893     Opts.FixItLocations.push_back(PSL);
894   }
895 
896   Opts.OutputFile = getLastArgValue(Args, OPT_o);
897   Opts.Plugins = getAllArgValues(Args, OPT_load);
898   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
899   Opts.ShowHelp = Args.hasArg(OPT_help);
900   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
901   Opts.ShowStats = Args.hasArg(OPT_print_stats);
902   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
903   Opts.ShowVersion = Args.hasArg(OPT_version);
904   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
905 
906   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
907   if (const Arg *A = Args.getLastArg(OPT_x)) {
908     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
909       .Case("c", FrontendOptions::IK_C)
910       .Case("cl", FrontendOptions::IK_OpenCL)
911       .Case("c", FrontendOptions::IK_C)
912       .Case("cl", FrontendOptions::IK_OpenCL)
913       .Case("c++", FrontendOptions::IK_CXX)
914       .Case("objective-c", FrontendOptions::IK_ObjC)
915       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
916       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
917       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
918       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
919       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
920       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
921       .Case("c-header", FrontendOptions::IK_C)
922       .Case("objective-c-header", FrontendOptions::IK_ObjC)
923       .Case("c++-header", FrontendOptions::IK_CXX)
924       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
925       .Case("ast", FrontendOptions::IK_AST)
926       .Default(FrontendOptions::IK_None);
927     if (DashX == FrontendOptions::IK_None)
928       Diags.Report(diag::err_drv_invalid_value)
929         << A->getAsString(Args) << A->getValue(Args);
930   }
931 
932   // '-' is the default input if none is given.
933   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
934   Opts.Inputs.clear();
935   if (Inputs.empty())
936     Inputs.push_back("-");
937   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
938     FrontendOptions::InputKind IK = DashX;
939     if (IK == FrontendOptions::IK_None) {
940       IK = FrontendOptions::getInputKindForExtension(
941         llvm::StringRef(Inputs[i]).rsplit('.').second);
942       // FIXME: Remove this hack.
943       if (i == 0)
944         DashX = IK;
945     }
946     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
947   }
948 
949   return DashX;
950 }
951 
952 static std::string GetBuiltinIncludePath(const char *Argv0,
953                                          void *MainAddr) {
954   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
955 
956   if (!P.isEmpty()) {
957     P.eraseComponent();  // Remove /clang from foo/bin/clang
958     P.eraseComponent();  // Remove /bin   from foo/bin
959 
960     // Get foo/lib/clang/<version>/include
961     P.appendComponent("lib");
962     P.appendComponent("clang");
963     P.appendComponent(CLANG_VERSION_STRING);
964     P.appendComponent("include");
965   }
966 
967   return P.str();
968 }
969 
970 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
971                                   const char *Argv0, void *MainAddr) {
972   using namespace cc1options;
973   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
974   Opts.Verbose = Args.hasArg(OPT_v);
975   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
976   Opts.BuiltinIncludePath = "";
977   // FIXME: Add an option for this, its a slow call.
978   if (!Args.hasArg(OPT_nobuiltininc))
979     Opts.BuiltinIncludePath = GetBuiltinIncludePath(Argv0, MainAddr);
980 
981   // Add -I... and -F... options in order.
982   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
983          ie = Args.filtered_end(); it != ie; ++it)
984     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
985                  /*IsFramework=*/ it->getOption().matches(OPT_F));
986 
987   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
988   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
989   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
990                                              OPT_iwithprefixbefore),
991          ie = Args.filtered_end(); it != ie; ++it) {
992     if (it->getOption().matches(OPT_iprefix))
993       Prefix = it->getValue(Args);
994     else if (it->getOption().matches(OPT_iwithprefix))
995       Opts.AddPath(Prefix.str() + it->getValue(Args),
996                    frontend::System, false, false);
997     else
998       Opts.AddPath(Prefix.str() + it->getValue(Args),
999                    frontend::Angled, false, false);
1000   }
1001 
1002   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1003          ie = Args.filtered_end(); it != ie; ++it)
1004     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1005   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1006          ie = Args.filtered_end(); it != ie; ++it)
1007     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1008   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1009          ie = Args.filtered_end(); it != ie; ++it)
1010     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1011 
1012   // FIXME: Need options for the various environment variables!
1013 }
1014 
1015 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1016                           FrontendOptions::InputKind IK,
1017                           Diagnostic &Diags) {
1018   // FIXME: Cleanup per-file based stuff.
1019 
1020   // Set some properties which depend soley on the input kind; it would be nice
1021   // to move these to the language standard, and have the driver resolve the
1022   // input kind + language standard.
1023   if (IK == FrontendOptions::IK_Asm) {
1024     Opts.AsmPreprocessor = 1;
1025   } else if (IK == FrontendOptions::IK_ObjC ||
1026              IK == FrontendOptions::IK_ObjCXX ||
1027              IK == FrontendOptions::IK_PreprocessedObjC ||
1028              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1029     Opts.ObjC1 = Opts.ObjC2 = 1;
1030   }
1031 
1032   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1033   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1034     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1035 #define LANGSTANDARD(id, name, desc, features) \
1036       .Case(name, LangStandard::lang_##id)
1037 #include "clang/Frontend/LangStandards.def"
1038       .Default(LangStandard::lang_unspecified);
1039     if (LangStd == LangStandard::lang_unspecified)
1040       Diags.Report(diag::err_drv_invalid_value)
1041         << A->getAsString(Args) << A->getValue(Args);
1042   }
1043 
1044   if (LangStd == LangStandard::lang_unspecified) {
1045     // Based on the base language, pick one.
1046     switch (IK) {
1047     case FrontendOptions::IK_None:
1048     case FrontendOptions::IK_AST:
1049       assert(0 && "Invalid input kind!");
1050     case FrontendOptions::IK_OpenCL:
1051       LangStd = LangStandard::lang_opencl;
1052       break;
1053     case FrontendOptions::IK_Asm:
1054     case FrontendOptions::IK_C:
1055     case FrontendOptions::IK_PreprocessedC:
1056     case FrontendOptions::IK_ObjC:
1057     case FrontendOptions::IK_PreprocessedObjC:
1058       LangStd = LangStandard::lang_gnu99;
1059       break;
1060     case FrontendOptions::IK_CXX:
1061     case FrontendOptions::IK_PreprocessedCXX:
1062     case FrontendOptions::IK_ObjCXX:
1063     case FrontendOptions::IK_PreprocessedObjCXX:
1064       LangStd = LangStandard::lang_gnucxx98;
1065       break;
1066     }
1067   }
1068 
1069   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1070   Opts.BCPLComment = Std.hasBCPLComments();
1071   Opts.C99 = Std.isC99();
1072   Opts.CPlusPlus = Std.isCPlusPlus();
1073   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1074   Opts.Digraphs = Std.hasDigraphs();
1075   Opts.GNUMode = Std.isGNUMode();
1076   Opts.GNUInline = !Std.isC99();
1077   Opts.HexFloats = Std.hasHexFloats();
1078   Opts.ImplicitInt = Std.hasImplicitInt();
1079 
1080   // OpenCL has some additional defaults.
1081   if (LangStd == LangStandard::lang_opencl) {
1082     Opts.OpenCL = 1;
1083     Opts.AltiVec = 1;
1084     Opts.CXXOperatorNames = 1;
1085     Opts.LaxVectorConversions = 1;
1086   }
1087 
1088   // OpenCL and C++ both have bool, true, false keywords.
1089   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1090 
1091   if (Opts.CPlusPlus)
1092     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1093 
1094   if (Args.hasArg(OPT_fobjc_gc_only))
1095     Opts.setGCMode(LangOptions::GCOnly);
1096   else if (Args.hasArg(OPT_fobjc_gc))
1097     Opts.setGCMode(LangOptions::HybridGC);
1098 
1099   if (Args.hasArg(OPT_print_ivar_layout))
1100     Opts.ObjCGCBitmapPrint = 1;
1101 
1102   if (Args.hasArg(OPT_faltivec))
1103     Opts.AltiVec = 1;
1104 
1105   if (Args.hasArg(OPT_pthread))
1106     Opts.POSIXThreads = 1;
1107 
1108   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1109                                         "default");
1110   if (Vis == "default")
1111     Opts.setVisibilityMode(LangOptions::Default);
1112   else if (Vis == "hidden")
1113     Opts.setVisibilityMode(LangOptions::Hidden);
1114   else if (Vis == "protected")
1115     Opts.setVisibilityMode(LangOptions::Protected);
1116   else
1117     Diags.Report(diag::err_drv_invalid_value)
1118       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1119 
1120   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1121 
1122   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1123   // is specified, or -std is set to a conforming mode.
1124   Opts.Trigraphs = !Opts.GNUMode;
1125   if (Args.hasArg(OPT_trigraphs))
1126     Opts.Trigraphs = 1;
1127 
1128   Opts.DollarIdents = !Opts.AsmPreprocessor;
1129   if (Args.hasArg(OPT_fdollars_in_identifiers))
1130     Opts.DollarIdents = 1;
1131 
1132   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1133   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1134   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1135   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1136       Opts.LaxVectorConversions = 0;
1137   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1138   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1139   Opts.Blocks = Args.hasArg(OPT_fblocks);
1140   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1141   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1142   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1143   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1144   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1145   Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1146   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1147   Opts.MathErrno = !Args.hasArg(OPT_fno_math_errno);
1148   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1149                                                Diags);
1150   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1151   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1152                                                  OPT_fconstant_string_class);
1153   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1154   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1155   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1156   Opts.Static = Args.hasArg(OPT_static_define);
1157   Opts.OptimizeSize = 0;
1158 
1159   // FIXME: Eliminate this dependency.
1160   unsigned Opt =
1161     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1162   Opts.Optimize = Opt != 0;
1163 
1164   // This is the __NO_INLINE__ define, which just depends on things like the
1165   // optimization level and -fno-inline, not actually whether the backend has
1166   // inlining enabled.
1167   //
1168   // FIXME: This is affected by other options (-fno-inline).
1169   Opts.NoInline = !Opt;
1170 
1171   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1172   switch (SSP) {
1173   default:
1174     Diags.Report(diag::err_drv_invalid_value)
1175       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1176     break;
1177   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1178   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1179   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1180   }
1181 }
1182 
1183 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1184                                   Diagnostic &Diags) {
1185   using namespace cc1options;
1186   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1187   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1188   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1189       Opts.TokenCache = A->getValue(Args);
1190   else
1191     Opts.TokenCache = Opts.ImplicitPTHInclude;
1192   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1193 
1194   // Add macros from the command line.
1195   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1196          ie = Args.filtered_end(); it != ie; ++it) {
1197     if (it->getOption().matches(OPT_D))
1198       Opts.addMacroDef(it->getValue(Args));
1199     else
1200       Opts.addMacroUndef(it->getValue(Args));
1201   }
1202 
1203   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1204 
1205   // Add the ordered list of -includes.
1206   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1207                                              OPT_include_pth),
1208          ie = Args.filtered_end(); it != ie; ++it) {
1209     // PCH is handled specially, we need to extra the original include path.
1210     if (it->getOption().matches(OPT_include_pch)) {
1211       std::string OriginalFile =
1212         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1213       if (OriginalFile.empty())
1214         continue;
1215 
1216       Opts.Includes.push_back(OriginalFile);
1217     } else
1218       Opts.Includes.push_back(it->getValue(Args));
1219   }
1220 
1221   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1222          ie = Args.filtered_end(); it != ie; ++it) {
1223     std::pair<llvm::StringRef,llvm::StringRef> Split =
1224       llvm::StringRef(it->getValue(Args)).split(';');
1225 
1226     if (Split.second.empty()) {
1227       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1228       continue;
1229     }
1230 
1231     Opts.addRemappedFile(Split.first, Split.second);
1232   }
1233 }
1234 
1235 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1236                                         ArgList &Args) {
1237   using namespace cc1options;
1238   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1239   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1240   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1241   Opts.ShowComments = Args.hasArg(OPT_C);
1242   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1243 }
1244 
1245 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1246   using namespace cc1options;
1247   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1248   Opts.CPU = getLastArgValue(Args, OPT_mcpu);
1249   Opts.Triple = getLastArgValue(Args, OPT_triple);
1250   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1251 
1252   // Use the host triple if unspecified.
1253   if (Opts.Triple.empty())
1254     Opts.Triple = llvm::sys::getHostTriple();
1255 }
1256 
1257 //
1258 
1259 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1260                                         const char **ArgBegin,
1261                                         const char **ArgEnd,
1262                                         const char *Argv0,
1263                                         void *MainAddr,
1264                                         Diagnostic &Diags) {
1265   // Parse the arguments.
1266   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1267   unsigned MissingArgIndex, MissingArgCount;
1268   llvm::OwningPtr<InputArgList> Args(
1269     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1270 
1271   // Check for missing argument error.
1272   if (MissingArgCount)
1273     Diags.Report(diag::err_drv_missing_argument)
1274       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1275 
1276   // Issue errors on unknown arguments.
1277   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1278          ie = Args->filtered_end(); it != ie; ++it)
1279     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1280 
1281   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1282   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1283   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1284   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1285   FrontendOptions::InputKind DashX =
1286     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1287   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args,
1288                         Argv0, MainAddr);
1289   if (DashX != FrontendOptions::IK_AST)
1290     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1291   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1292   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1293   ParseTargetArgs(Res.getTargetOpts(), *Args);
1294 }
1295