xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision c70c39300fa6aa0bfdc4f40afc2b4bd949e442ec) 
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 store!");
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.EagerlyAssume)
100     Res.push_back("-analyzer-eagerly-assume");
101   if (!Opts.PurgeDead)
102     Res.push_back("-analyzer-no-purge-dead");
103   if (Opts.TrimGraph)
104     Res.push_back("-trim-egraph");
105   if (Opts.VisualizeEGDot)
106     Res.push_back("-analyzer-viz-egraph-graphviz");
107   if (Opts.VisualizeEGDot)
108     Res.push_back("-analyzer-viz-egraph-ubigraph");
109   if (Opts.EnableExperimentalChecks)
110     Res.push_back("-analyzer-experimental-checks");
111   if (Opts.EnableExperimentalInternalChecks)
112     Res.push_back("-analyzer-experimental-internal-checks");
113 }
114 
115 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
116                               std::vector<std::string> &Res) {
117   if (Opts.DebugInfo)
118     Res.push_back("-g");
119   if (Opts.DisableLLVMOpts)
120     Res.push_back("-disable-llvm-optzns");
121   if (Opts.DisableRedZone)
122     Res.push_back("-disable-red-zone");
123   if (!Opts.MergeAllConstants)
124     Res.push_back("-fno-merge-all-constants");
125   if (Opts.NoCommon)
126     Res.push_back("-fno-common");
127   if (Opts.NoImplicitFloat)
128     Res.push_back("-no-implicit-float");
129   if (Opts.OptimizeSize) {
130     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
131     Res.push_back("-Os");
132   } else if (Opts.OptimizationLevel != 0)
133     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
134   if (!Opts.MainFileName.empty()) {
135     Res.push_back("-main-file-name");
136     Res.push_back(Opts.MainFileName);
137   }
138   // SimplifyLibCalls is only derived.
139   // TimePasses is only derived.
140   // UnitAtATime is unused.
141   // UnrollLoops is only derived.
142   // VerifyModule is only derived.
143   // Inlining is only derived.
144 
145   if (Opts.AsmVerbose)
146     Res.push_back("-masm-verbose");
147   if (!Opts.CodeModel.empty()) {
148     Res.push_back("-mcode-model");
149     Res.push_back(Opts.CodeModel);
150   }
151   if (!Opts.DebugPass.empty()) {
152     Res.push_back("-mdebug-pass");
153     Res.push_back(Opts.DebugPass);
154   }
155   if (Opts.DisableFPElim)
156     Res.push_back("-mdisable-fp-elim");
157   if (!Opts.FloatABI.empty()) {
158     Res.push_back("-mfloat-abi");
159     Res.push_back(Opts.FloatABI);
160   }
161   if (!Opts.LimitFloatPrecision.empty()) {
162     Res.push_back("-mlimit-float-precision");
163     Res.push_back(Opts.LimitFloatPrecision);
164   }
165   if (Opts.NoZeroInitializedInBSS)
166     Res.push_back("-mno-zero-initialized-bss");
167   if (Opts.SoftFloat)
168     Res.push_back("-msoft-float");
169   if (Opts.UnwindTables)
170     Res.push_back("-munwind-tables");
171   if (Opts.RelocationModel != "pic") {
172     Res.push_back("-mrelocation-model");
173     Res.push_back(Opts.RelocationModel);
174   }
175 }
176 
177 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
178                                        std::vector<std::string> &Res) {
179   if (Opts.IncludeSystemHeaders)
180     Res.push_back("-sys-header-deps");
181   if (Opts.UsePhonyTargets)
182     Res.push_back("-MP");
183   if (!Opts.OutputFile.empty()) {
184     Res.push_back("-dependency-file");
185     Res.push_back(Opts.OutputFile);
186   }
187   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
188     Res.push_back("-MT");
189     Res.push_back(Opts.Targets[i]);
190   }
191 }
192 
193 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
194                                  std::vector<std::string> &Res) {
195   if (Opts.IgnoreWarnings)
196     Res.push_back("-w");
197   if (Opts.NoRewriteMacros)
198     Res.push_back("-Wno-rewrite-macros");
199   if (Opts.Pedantic)
200     Res.push_back("-pedantic");
201   if (Opts.PedanticErrors)
202     Res.push_back("-pedantic-errors");
203   if (!Opts.ShowColumn)
204     Res.push_back("-fno-show-column");
205   if (!Opts.ShowLocation)
206     Res.push_back("-fno-show-source-location");
207   if (!Opts.ShowCarets)
208     Res.push_back("-fno-caret-diagnostics");
209   if (!Opts.ShowFixits)
210     Res.push_back("-fno-diagnostics-fixit-info");
211   if (Opts.ShowSourceRanges)
212     Res.push_back("-fdiagnostics-print-source-range-info");
213   if (Opts.ShowColors)
214     Res.push_back("-fcolor-diagnostics");
215   if (Opts.VerifyDiagnostics)
216     Res.push_back("-verify");
217   if (Opts.ShowOptionNames)
218     Res.push_back("-fdiagnostics-show-option");
219   if (Opts.MessageLength) {
220     Res.push_back("-fmessage-length");
221     Res.push_back(llvm::utostr(Opts.MessageLength));
222   }
223   if (!Opts.DumpBuildInformation.empty()) {
224     Res.push_back("-dump-build-information");
225     Res.push_back(Opts.DumpBuildInformation);
226   }
227   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
228     Res.push_back("-W" + Opts.Warnings[i]);
229 }
230 
231 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
232   switch (Kind) {
233   case FrontendOptions::IK_None:              break;
234   case FrontendOptions::IK_AST:               return "ast";
235   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
236   case FrontendOptions::IK_C:                 return "c";
237   case FrontendOptions::IK_CXX:               return "c++";
238   case FrontendOptions::IK_ObjC:              return "objective-c";
239   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
240   case FrontendOptions::IK_OpenCL:            return "cl";
241   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
242   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
243   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
244   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
245   }
246 
247   llvm::llvm_unreachable("Unexpected language kind!");
248   return 0;
249 }
250 
251 static const char *getActionName(frontend::ActionKind Kind) {
252   switch (Kind) {
253   case frontend::PluginAction:
254   case frontend::InheritanceView:
255     llvm::llvm_unreachable("Invalid kind!");
256 
257   case frontend::ASTDump:                return "-ast-dump";
258   case frontend::ASTPrint:               return "-ast-print";
259   case frontend::ASTPrintXML:            return "-ast-print-xml";
260   case frontend::ASTView:                return "-ast-view";
261   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
262   case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
263   case frontend::DumpTokens:             return "-dump-tokens";
264   case frontend::EmitAssembly:           return "-S";
265   case frontend::EmitBC:                 return "-emit-llvm-bc";
266   case frontend::EmitHTML:               return "-emit-html";
267   case frontend::EmitLLVM:               return "-emit-llvm";
268   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
269   case frontend::FixIt:                  return "-fixit";
270   case frontend::GeneratePCH:            return "-emit-pch";
271   case frontend::GeneratePTH:            return "-emit-pth";
272   case frontend::ParseNoop:              return "-parse-noop";
273   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
274   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
275   case frontend::PrintDeclContext:       return "-print-decl-contexts";
276   case frontend::PrintPreprocessedInput: return "-E";
277   case frontend::RewriteBlocks:          return "-rewrite-blocks";
278   case frontend::RewriteMacros:          return "-rewrite-macros";
279   case frontend::RewriteObjC:            return "-rewrite-objc";
280   case frontend::RewriteTest:            return "-rewrite-test";
281   case frontend::RunAnalysis:            return "-analyze";
282   case frontend::RunPreprocessorOnly:    return "-Eonly";
283   }
284 
285   llvm::llvm_unreachable("Unexpected language kind!");
286   return 0;
287 }
288 
289 static void FrontendOptsToArgs(const FrontendOptions &Opts,
290                                std::vector<std::string> &Res) {
291   if (!Opts.DebugCodeCompletionPrinter)
292     Res.push_back("-no-code-completion-debug-printer");
293   if (Opts.DisableFree)
294     Res.push_back("-disable-free");
295   if (Opts.EmptyInputOnly)
296     Res.push_back("-empty-input-only");
297   if (Opts.RelocatablePCH)
298     Res.push_back("-relocatable-pch");
299   if (Opts.ShowMacrosInCodeCompletion)
300     Res.push_back("-code-completion-macros");
301   if (Opts.ShowStats)
302     Res.push_back("-print-stats");
303   if (Opts.ShowTimers)
304     Res.push_back("-ftime-report");
305 
306   bool NeedLang = false;
307   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
308     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
309         Opts.Inputs[i].first)
310       NeedLang = true;
311   if (NeedLang) {
312     Res.push_back("-x");
313     Res.push_back(getInputKindName(Opts.Inputs[0].first));
314   }
315   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
316     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
317            "Unable to represent this input vector!");
318     Res.push_back(Opts.Inputs[i].second);
319   }
320 
321   if (!Opts.OutputFile.empty()) {
322     Res.push_back("-o");
323     Res.push_back(Opts.OutputFile);
324   }
325   if (!Opts.ViewClassInheritance.empty()) {
326     Res.push_back("-cxx-inheritance-view");
327     Res.push_back(Opts.ViewClassInheritance);
328   }
329   for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
330     Res.push_back("-fixit-at");
331     Res.push_back(Opts.FixItLocations[i].FileName + ":" +
332                   llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
333                   llvm::utostr(Opts.FixItLocations[i].Column));
334   }
335   if (!Opts.CodeCompletionAt.FileName.empty()) {
336     Res.push_back("-code-completion-at");
337     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
338                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
339                   llvm::utostr(Opts.CodeCompletionAt.Column));
340   }
341   if (Opts.ProgramAction != frontend::InheritanceView &&
342       Opts.ProgramAction != frontend::PluginAction)
343     Res.push_back(getActionName(Opts.ProgramAction));
344   if (!Opts.ActionName.empty()) {
345     Res.push_back("-plugin");
346     Res.push_back(Opts.ActionName);
347   }
348 }
349 
350 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
351                                    std::vector<std::string> &Res) {
352   if (Opts.Sysroot != "/") {
353     Res.push_back("-isysroot");
354     Res.push_back(Opts.Sysroot);
355   }
356 
357   /// User specified include entries.
358   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
359     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
360     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
361       llvm::llvm_report_error("Invalid option set!");
362     if (E.IsUserSupplied) {
363       if (E.Group == frontend::After) {
364         Res.push_back("-idirafter");
365       } else if (E.Group == frontend::Quoted) {
366         Res.push_back("-iquote");
367       } else if (E.Group == frontend::System) {
368         Res.push_back("-isystem");
369       } else {
370         assert(E.Group == frontend::Angled && "Invalid group!");
371         Res.push_back(E.IsFramework ? "-F" : "-I");
372       }
373     } else {
374       if (E.Group != frontend::Angled && E.Group != frontend::System)
375         llvm::llvm_report_error("Invalid option set!");
376       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
377                     "-iwithprefix");
378     }
379     Res.push_back(E.Path);
380   }
381 
382   if (!Opts.EnvIncPath.empty()) {
383     // FIXME: Provide an option for this, and move env detection to driver.
384     llvm::llvm_report_error("Not yet implemented!");
385   }
386   if (!Opts.CEnvIncPath.empty()) {
387     // FIXME: Provide an option for this, and move env detection to driver.
388     llvm::llvm_report_error("Not yet implemented!");
389   }
390   if (!Opts.ObjCEnvIncPath.empty()) {
391     // FIXME: Provide an option for this, and move env detection to driver.
392     llvm::llvm_report_error("Not yet implemented!");
393   }
394   if (!Opts.CXXEnvIncPath.empty()) {
395     // FIXME: Provide an option for this, and move env detection to driver.
396     llvm::llvm_report_error("Not yet implemented!");
397   }
398   if (!Opts.ObjCXXEnvIncPath.empty()) {
399     // FIXME: Provide an option for this, and move env detection to driver.
400     llvm::llvm_report_error("Not yet implemented!");
401   }
402   if (!Opts.BuiltinIncludePath.empty()) {
403     // FIXME: Provide an option for this, and move to driver.
404   }
405   if (!Opts.UseStandardIncludes)
406     Res.push_back("-nostdinc");
407   if (Opts.Verbose)
408     Res.push_back("-v");
409 }
410 
411 static void LangOptsToArgs(const LangOptions &Opts,
412                            std::vector<std::string> &Res) {
413   LangOptions DefaultLangOpts;
414 
415   // FIXME: Need to set -std to get all the implicit options.
416 
417   // FIXME: We want to only pass options relative to the defaults, which
418   // requires constructing a target. :(
419   //
420   // It would be better to push the all target specific choices into the driver,
421   // so that everything below that was more uniform.
422 
423   if (Opts.Trigraphs)
424     Res.push_back("-trigraphs");
425   // Implicit based on the input kind:
426   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
427   // Implicit based on the input language standard:
428   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
429   if (Opts.DollarIdents)
430     Res.push_back("-fdollars-in-identifiers");
431   if (Opts.Microsoft)
432     Res.push_back("-fms-extensions=1");
433   if (Opts.ObjCNonFragileABI)
434     Res.push_back("-fobjc-nonfragile-abi");
435   // NoInline is implicit.
436   if (!Opts.CXXOperatorNames)
437     Res.push_back("-fno-operator-names");
438   if (Opts.PascalStrings)
439     Res.push_back("-fpascal-strings");
440   if (Opts.WritableStrings)
441     Res.push_back("-fwritable-strings");
442   if (!Opts.LaxVectorConversions)
443     Res.push_back("-fno-lax-vector-conversions");
444   if (Opts.AltiVec)
445     Res.push_back("-faltivec");
446   if (Opts.Exceptions)
447     Res.push_back("-fexceptions");
448   if (!Opts.Rtti)
449     Res.push_back("-fno-rtti");
450   if (!Opts.NeXTRuntime)
451     Res.push_back("-fgnu-runtime");
452   if (Opts.Freestanding)
453     Res.push_back("-ffreestanding");
454   if (Opts.NoBuiltin)
455     Res.push_back("-fno-builtin");
456   if (Opts.ThreadsafeStatics)
457     llvm::llvm_report_error("FIXME: Not yet implemented!");
458   if (Opts.POSIXThreads)
459     Res.push_back("-pthread");
460   if (Opts.Blocks)
461     Res.push_back("-fblocks");
462   if (Opts.EmitAllDecls)
463     Res.push_back("-femit-all-decls");
464   if (!Opts.MathErrno)
465     Res.push_back("-fno-math-errno");
466   if (Opts.OverflowChecking)
467     Res.push_back("-ftrapv");
468   if (Opts.HeinousExtensions)
469     Res.push_back("-fheinous-gnu-extensions");
470   // Optimize is implicit.
471   // OptimizeSize is implicit.
472   if (Opts.Static)
473     Res.push_back("-static-define");
474   if (Opts.PICLevel) {
475     Res.push_back("-pic-level");
476     Res.push_back(llvm::utostr(Opts.PICLevel));
477   }
478   if (Opts.ObjCGCBitmapPrint)
479     Res.push_back("-print-ivar-layout");
480   // FIXME: Don't forget to update when the default changes!
481   if (Opts.AccessControl)
482     Res.push_back("-faccess-control");
483   if (!Opts.CharIsSigned)
484     Res.push_back("-fno-signed-char");
485   if (Opts.ShortWChar)
486     Res.push_back("-fshort-wchar");
487   if (!Opts.ElideConstructors)
488     Res.push_back("-fno-elide-constructors");
489   if (Opts.getGCMode() != LangOptions::NonGC) {
490     if (Opts.getGCMode() == LangOptions::HybridGC) {
491       Res.push_back("-fobjc-gc");
492     } else {
493       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
494       Res.push_back("-fobjc-gc-only");
495     }
496   }
497   if (Opts.getVisibilityMode() != LangOptions::Default) {
498     Res.push_back("-fvisibility");
499     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
500       Res.push_back("hidden");
501     } else {
502       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
503              "Invalid visibility!");
504       Res.push_back("protected");
505     }
506   }
507   if (Opts.getStackProtectorMode() != 0) {
508     Res.push_back("-stack-protector");
509     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
510   }
511   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
512     Res.push_back("-ftemplate-depth");
513     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
514   }
515   if (!Opts.ObjCConstantStringClass.empty()) {
516     Res.push_back("-fconstant-string-class");
517     Res.push_back(Opts.ObjCConstantStringClass);
518   }
519 }
520 
521 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
522                                    std::vector<std::string> &Res) {
523   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
524     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
525                   Opts.Macros[i].first);
526   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
527     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
528     Res.push_back("-include");
529     Res.push_back(Opts.Includes[i]);
530   }
531   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
532     Res.push_back("-imacros");
533     Res.push_back(Opts.MacroIncludes[i]);
534   }
535   if (!Opts.UsePredefines)
536     Res.push_back("-undef");
537   if (!Opts.ImplicitPCHInclude.empty()) {
538     Res.push_back("-include-pch");
539     Res.push_back(Opts.ImplicitPCHInclude);
540   }
541   if (!Opts.ImplicitPTHInclude.empty()) {
542     Res.push_back("-include-pth");
543     Res.push_back(Opts.ImplicitPTHInclude);
544   }
545   if (!Opts.TokenCache.empty()) {
546     if (Opts.ImplicitPTHInclude.empty()) {
547       Res.push_back("-token-cache");
548       Res.push_back(Opts.TokenCache);
549     } else
550       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
551              "Unsupported option combination!");
552   }
553 }
554 
555 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
556                                          std::vector<std::string> &Res) {
557   if (!Opts.ShowCPP && !Opts.ShowMacros)
558     llvm::llvm_report_error("Invalid option combination!");
559 
560   if (Opts.ShowCPP && Opts.ShowMacros)
561     Res.push_back("-dD");
562   else if (!Opts.ShowCPP && Opts.ShowMacros)
563     Res.push_back("-dM");
564 
565   if (!Opts.ShowLineMarkers)
566     Res.push_back("-P");
567   if (Opts.ShowComments)
568     Res.push_back("-C");
569   if (Opts.ShowMacroComments)
570     Res.push_back("-CC");
571 }
572 
573 static void TargetOptsToArgs(const TargetOptions &Opts,
574                              std::vector<std::string> &Res) {
575   Res.push_back("-triple");
576   Res.push_back(Opts.Triple);
577   if (!Opts.CPU.empty()) {
578     Res.push_back("-mcpu");
579     Res.push_back(Opts.CPU);
580   }
581   if (!Opts.ABI.empty()) {
582     Res.push_back("-target-abi");
583     Res.push_back(Opts.ABI);
584   }
585   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
586     Res.push_back("-target-feature");
587     Res.push_back(Opts.Features[i]);
588   }
589 }
590 
591 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
592   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
593   CodeGenOptsToArgs(getCodeGenOpts(), Res);
594   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
595   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
596   FrontendOptsToArgs(getFrontendOpts(), Res);
597   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
598   LangOptsToArgs(getLangOpts(), Res);
599   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
600   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
601   TargetOptsToArgs(getTargetOpts(), Res);
602 }
603 
604 //===----------------------------------------------------------------------===//
605 // Deserialization (to args)
606 //===----------------------------------------------------------------------===//
607 
608 using namespace clang::driver;
609 using namespace clang::driver::cc1options;
610 
611 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
612                                        llvm::StringRef Default = "") {
613   if (Arg *A = Args.getLastArg(ID))
614     return A->getValue(Args);
615   return Default;
616 }
617 
618 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
619                               int Default, Diagnostic &Diags) {
620   Arg *A = Args.getLastArg(ID);
621   if (!A)
622     return Default;
623 
624   int Res = Default;
625   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
626     Diags.Report(diag::err_drv_invalid_int_value)
627         << A->getAsString(Args) << A->getValue(Args);
628 
629   return Res;
630 }
631 
632 static std::vector<std::string>
633 getAllArgValues(ArgList &Args, cc1options::ID ID) {
634   llvm::SmallVector<const char *, 16> Values;
635   Args.AddAllArgValues(Values, ID);
636   return std::vector<std::string>(Values.begin(), Values.end());
637 }
638 
639 //
640 
641 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
642                               Diagnostic &Diags) {
643   using namespace cc1options;
644 
645   Opts.AnalysisList.clear();
646 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
647   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
648 #include "clang/Frontend/Analyses.def"
649 
650   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
651     llvm::StringRef Name = A->getValue(Args);
652     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
653 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
654       .Case(CMDFLAG, NAME##Model)
655 #include "clang/Frontend/Analyses.def"
656       .Default(NumStores);
657     // FIXME: Error handling.
658     if (Value == NumStores)
659       Diags.Report(diag::err_drv_invalid_value)
660         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
661     else
662       Opts.AnalysisStoreOpt = Value;
663   }
664 
665   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
666     llvm::StringRef Name = A->getValue(Args);
667     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
668 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
669       .Case(CMDFLAG, NAME##Model)
670 #include "clang/Frontend/Analyses.def"
671       .Default(NumConstraints);
672     // FIXME: Error handling.
673     if (Value == NumConstraints)
674       Diags.Report(diag::err_drv_invalid_value)
675         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
676     else
677       Opts.AnalysisConstraintsOpt = Value;
678   }
679 
680   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
681     llvm::StringRef Name = A->getValue(Args);
682     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
683 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
684       .Case(CMDFLAG, PD_##NAME)
685 #include "clang/Frontend/Analyses.def"
686       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
687     // FIXME: Error handling.
688     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
689       Diags.Report(diag::err_drv_invalid_value)
690         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
691     else
692       Opts.AnalysisDiagOpt = Value;
693   }
694 
695   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
696   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
697   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
698   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
699   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
700   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
701   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
702   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
703   Opts.EnableExperimentalInternalChecks =
704     Args.hasArg(OPT_analyzer_experimental_internal_checks);
705   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
706 }
707 
708 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
709                              Diagnostic &Diags) {
710   using namespace cc1options;
711   // -Os implies -O2
712   if (Args.hasArg(OPT_Os))
713     Opts.OptimizationLevel = 2;
714   else {
715     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
716     if (Opts.OptimizationLevel > 3) {
717       Diags.Report(diag::err_drv_invalid_value)
718         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
719       Opts.OptimizationLevel = 3;
720     }
721   }
722 
723   // We must always run at least the always inlining pass.
724   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
725     : CodeGenOptions::OnlyAlwaysInlining;
726 
727   Opts.DebugInfo = Args.hasArg(OPT_g);
728   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
729   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
730   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
731   Opts.NoCommon = Args.hasArg(OPT_fno_common);
732   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
733   Opts.OptimizeSize = Args.hasArg(OPT_Os);
734   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
735 
736   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
737   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
738   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
739   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
740   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
741   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
742   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
743   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
744   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
745   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
746 
747   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
748 
749   // FIXME: Put elsewhere?
750 #ifdef NDEBUG
751   Opts.VerifyModule = 0;
752 #else
753   Opts.VerifyModule = 1;
754 #endif
755 }
756 
757 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
758                                       ArgList &Args) {
759   using namespace cc1options;
760   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
761   Opts.Targets = getAllArgValues(Args, OPT_MT);
762   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
763   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
764 }
765 
766 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
767                                 Diagnostic &Diags) {
768   using namespace cc1options;
769   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
770   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
771   Opts.Pedantic = Args.hasArg(OPT_pedantic);
772   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
773   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
774   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
775   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
776   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
777   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
778   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
779   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
780   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
781   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
782   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
783   Opts.Warnings = getAllArgValues(Args, OPT_W);
784 }
785 
786 static FrontendOptions::InputKind
787 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
788   using namespace cc1options;
789   Opts.ProgramAction = frontend::ParseSyntaxOnly;
790   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
791     switch (A->getOption().getID()) {
792     default:
793       assert(0 && "Invalid option in group!");
794     case OPT_ast_dump:
795       Opts.ProgramAction = frontend::ASTDump; break;
796     case OPT_ast_print:
797       Opts.ProgramAction = frontend::ASTPrint; break;
798     case OPT_ast_print_xml:
799       Opts.ProgramAction = frontend::ASTPrintXML; break;
800     case OPT_ast_view:
801       Opts.ProgramAction = frontend::ASTView; break;
802     case OPT_dump_raw_tokens:
803       Opts.ProgramAction = frontend::DumpRawTokens; break;
804     case OPT_dump_record_layouts:
805       Opts.ProgramAction = frontend::DumpRecordLayouts; break;
806     case OPT_dump_tokens:
807       Opts.ProgramAction = frontend::DumpTokens; break;
808     case OPT_S:
809       Opts.ProgramAction = frontend::EmitAssembly; break;
810     case OPT_emit_llvm_bc:
811       Opts.ProgramAction = frontend::EmitBC; break;
812     case OPT_emit_html:
813       Opts.ProgramAction = frontend::EmitHTML; break;
814     case OPT_emit_llvm:
815       Opts.ProgramAction = frontend::EmitLLVM; break;
816     case OPT_emit_llvm_only:
817       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
818     case OPT_fixit:
819       Opts.ProgramAction = frontend::FixIt; break;
820     case OPT_emit_pch:
821       Opts.ProgramAction = frontend::GeneratePCH; break;
822     case OPT_emit_pth:
823       Opts.ProgramAction = frontend::GeneratePTH; break;
824     case OPT_parse_noop:
825       Opts.ProgramAction = frontend::ParseNoop; break;
826     case OPT_parse_print_callbacks:
827       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
828     case OPT_fsyntax_only:
829       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
830     case OPT_print_decl_contexts:
831       Opts.ProgramAction = frontend::PrintDeclContext; break;
832     case OPT_E:
833       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
834     case OPT_rewrite_blocks:
835       Opts.ProgramAction = frontend::RewriteBlocks; break;
836     case OPT_rewrite_macros:
837       Opts.ProgramAction = frontend::RewriteMacros; break;
838     case OPT_rewrite_objc:
839       Opts.ProgramAction = frontend::RewriteObjC; break;
840     case OPT_rewrite_test:
841       Opts.ProgramAction = frontend::RewriteTest; break;
842     case OPT_analyze:
843       Opts.ProgramAction = frontend::RunAnalysis; break;
844     case OPT_Eonly:
845       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
846     }
847   }
848   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
849     Opts.ProgramAction = frontend::PluginAction;
850     Opts.ActionName = A->getValue(Args);
851   }
852 
853   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
854     Opts.CodeCompletionAt =
855       ParsedSourceLocation::FromString(A->getValue(Args));
856     if (Opts.CodeCompletionAt.FileName.empty())
857       Diags.Report(diag::err_drv_invalid_value)
858         << A->getAsString(Args) << A->getValue(Args);
859   }
860   Opts.DebugCodeCompletionPrinter =
861     !Args.hasArg(OPT_no_code_completion_debug_printer);
862   Opts.DisableFree = Args.hasArg(OPT_disable_free);
863   Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
864 
865   Opts.FixItLocations.clear();
866   for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
867          ie = Args.filtered_end(); it != ie; ++it) {
868     const char *Loc = it->getValue(Args);
869     ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
870 
871     if (PSL.FileName.empty()) {
872       Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
873       continue;
874     }
875 
876     Opts.FixItLocations.push_back(PSL);
877   }
878 
879   Opts.OutputFile = getLastArgValue(Args, OPT_o);
880   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
881   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
882   Opts.ShowStats = Args.hasArg(OPT_print_stats);
883   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
884   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
885 
886   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
887   if (const Arg *A = Args.getLastArg(OPT_x)) {
888     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
889       .Case("c", FrontendOptions::IK_C)
890       .Case("cl", FrontendOptions::IK_OpenCL)
891       .Case("c", FrontendOptions::IK_C)
892       .Case("cl", FrontendOptions::IK_OpenCL)
893       .Case("c++", FrontendOptions::IK_CXX)
894       .Case("objective-c", FrontendOptions::IK_ObjC)
895       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
896       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
897       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
898       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
899       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
900       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
901       .Case("c-header", FrontendOptions::IK_C)
902       .Case("objective-c-header", FrontendOptions::IK_ObjC)
903       .Case("c++-header", FrontendOptions::IK_CXX)
904       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
905       .Case("ast", FrontendOptions::IK_AST)
906       .Default(FrontendOptions::IK_None);
907     if (DashX == FrontendOptions::IK_None)
908       Diags.Report(diag::err_drv_invalid_value)
909         << A->getAsString(Args) << A->getValue(Args);
910   }
911 
912   // '-' is the default input if none is given.
913   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
914   Opts.Inputs.clear();
915   if (Inputs.empty())
916     Inputs.push_back("-");
917   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
918     FrontendOptions::InputKind IK = DashX;
919     if (IK == FrontendOptions::IK_None) {
920       IK = FrontendOptions::getInputKindForExtension(
921         llvm::StringRef(Inputs[i]).rsplit('.').second);
922       // FIXME: Remove this hack.
923       if (i == 0)
924         DashX = IK;
925     }
926     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
927   }
928 
929   return DashX;
930 }
931 
932 static std::string GetBuiltinIncludePath(const char *Argv0,
933                                          void *MainAddr) {
934   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
935 
936   if (!P.isEmpty()) {
937     P.eraseComponent();  // Remove /clang from foo/bin/clang
938     P.eraseComponent();  // Remove /bin   from foo/bin
939 
940     // Get foo/lib/clang/<version>/include
941     P.appendComponent("lib");
942     P.appendComponent("clang");
943     P.appendComponent(CLANG_VERSION_STRING);
944     P.appendComponent("include");
945   }
946 
947   return P.str();
948 }
949 
950 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
951                                   const char *Argv0, void *MainAddr) {
952   using namespace cc1options;
953   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
954   Opts.Verbose = Args.hasArg(OPT_v);
955   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
956   Opts.BuiltinIncludePath = "";
957   // FIXME: Add an option for this, its a slow call.
958   if (!Args.hasArg(OPT_nobuiltininc))
959     Opts.BuiltinIncludePath = GetBuiltinIncludePath(Argv0, MainAddr);
960 
961   // Add -I... and -F... options in order.
962   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
963          ie = Args.filtered_end(); it != ie; ++it)
964     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
965                  /*IsFramework=*/ it->getOption().matches(OPT_F));
966 
967   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
968   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
969   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
970                                              OPT_iwithprefixbefore),
971          ie = Args.filtered_end(); it != ie; ++it) {
972     if (it->getOption().matches(OPT_iprefix))
973       Prefix = it->getValue(Args);
974     else if (it->getOption().matches(OPT_iwithprefix))
975       Opts.AddPath(Prefix.str() + it->getValue(Args),
976                    frontend::System, false, false);
977     else
978       Opts.AddPath(Prefix.str() + it->getValue(Args),
979                    frontend::Angled, false, false);
980   }
981 
982   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
983          ie = Args.filtered_end(); it != ie; ++it)
984     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
985   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
986          ie = Args.filtered_end(); it != ie; ++it)
987     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
988   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
989          ie = Args.filtered_end(); it != ie; ++it)
990     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
991 
992   // FIXME: Need options for the various environment variables!
993 }
994 
995 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
996                           FrontendOptions::InputKind IK,
997                           Diagnostic &Diags) {
998   // FIXME: Cleanup per-file based stuff.
999 
1000   // Set some properties which depend soley on the input kind; it would be nice
1001   // to move these to the language standard, and have the driver resolve the
1002   // input kind + language standard.
1003   if (IK == FrontendOptions::IK_Asm) {
1004     Opts.AsmPreprocessor = 1;
1005   } else if (IK == FrontendOptions::IK_ObjC ||
1006              IK == FrontendOptions::IK_ObjCXX ||
1007              IK == FrontendOptions::IK_PreprocessedObjC ||
1008              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1009     Opts.ObjC1 = Opts.ObjC2 = 1;
1010   }
1011 
1012   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1013   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1014     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1015 #define LANGSTANDARD(id, name, desc, features) \
1016       .Case(name, LangStandard::lang_##id)
1017 #include "clang/Frontend/LangStandards.def"
1018       .Default(LangStandard::lang_unspecified);
1019     if (LangStd == LangStandard::lang_unspecified)
1020       Diags.Report(diag::err_drv_invalid_value)
1021         << A->getAsString(Args) << A->getValue(Args);
1022   }
1023 
1024   if (LangStd == LangStandard::lang_unspecified) {
1025     // Based on the base language, pick one.
1026     switch (IK) {
1027     case FrontendOptions::IK_None:
1028     case FrontendOptions::IK_AST:
1029       assert(0 && "Invalid input kind!");
1030     case FrontendOptions::IK_OpenCL:
1031       LangStd = LangStandard::lang_opencl;
1032       break;
1033     case FrontendOptions::IK_Asm:
1034     case FrontendOptions::IK_C:
1035     case FrontendOptions::IK_PreprocessedC:
1036     case FrontendOptions::IK_ObjC:
1037     case FrontendOptions::IK_PreprocessedObjC:
1038       LangStd = LangStandard::lang_gnu99;
1039       break;
1040     case FrontendOptions::IK_CXX:
1041     case FrontendOptions::IK_PreprocessedCXX:
1042     case FrontendOptions::IK_ObjCXX:
1043     case FrontendOptions::IK_PreprocessedObjCXX:
1044       LangStd = LangStandard::lang_gnucxx98;
1045       break;
1046     }
1047   }
1048 
1049   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1050   Opts.BCPLComment = Std.hasBCPLComments();
1051   Opts.C99 = Std.isC99();
1052   Opts.CPlusPlus = Std.isCPlusPlus();
1053   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1054   Opts.Digraphs = Std.hasDigraphs();
1055   Opts.GNUMode = Std.isGNUMode();
1056   Opts.GNUInline = !Std.isC99();
1057   Opts.HexFloats = Std.hasHexFloats();
1058   Opts.ImplicitInt = Std.hasImplicitInt();
1059 
1060   // OpenCL has some additional defaults.
1061   if (LangStd == LangStandard::lang_opencl) {
1062     Opts.OpenCL = 1;
1063     Opts.AltiVec = 1;
1064     Opts.CXXOperatorNames = 1;
1065     Opts.LaxVectorConversions = 1;
1066   }
1067 
1068   // OpenCL and C++ both have bool, true, false keywords.
1069   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1070 
1071   if (Opts.CPlusPlus)
1072     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1073 
1074   if (Args.hasArg(OPT_fobjc_gc_only))
1075     Opts.setGCMode(LangOptions::GCOnly);
1076   else if (Args.hasArg(OPT_fobjc_gc))
1077     Opts.setGCMode(LangOptions::HybridGC);
1078 
1079   if (Args.hasArg(OPT_print_ivar_layout))
1080     Opts.ObjCGCBitmapPrint = 1;
1081 
1082   if (Args.hasArg(OPT_faltivec))
1083     Opts.AltiVec = 1;
1084 
1085   if (Args.hasArg(OPT_pthread))
1086     Opts.POSIXThreads = 1;
1087 
1088   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1089                                         "default");
1090   if (Vis == "default")
1091     Opts.setVisibilityMode(LangOptions::Default);
1092   else if (Vis == "hidden")
1093     Opts.setVisibilityMode(LangOptions::Hidden);
1094   else if (Vis == "protected")
1095     Opts.setVisibilityMode(LangOptions::Protected);
1096   else
1097     Diags.Report(diag::err_drv_invalid_value)
1098       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1099 
1100   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1101 
1102   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1103   // is specified, or -std is set to a conforming mode.
1104   Opts.Trigraphs = !Opts.GNUMode;
1105   if (Args.hasArg(OPT_trigraphs))
1106     Opts.Trigraphs = 1;
1107 
1108   Opts.DollarIdents = !Opts.AsmPreprocessor;
1109   if (Args.hasArg(OPT_fdollars_in_identifiers))
1110     Opts.DollarIdents = 1;
1111 
1112   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1113   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1114   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1115   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1116       Opts.LaxVectorConversions = 0;
1117   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1118   Opts.Rtti = !Args.hasArg(OPT_fno_rtti);
1119   Opts.Blocks = Args.hasArg(OPT_fblocks);
1120   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1121   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1122   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1123   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1124   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1125   Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1126   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1127   Opts.MathErrno = !Args.hasArg(OPT_fno_math_errno);
1128   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1129                                                Diags);
1130   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1131   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1132                                                  OPT_fconstant_string_class);
1133   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1134   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1135   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1136   Opts.Static = Args.hasArg(OPT_static_define);
1137   Opts.OptimizeSize = 0;
1138 
1139   // FIXME: Eliminate this dependency.
1140   unsigned Opt =
1141     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1142   Opts.Optimize = Opt != 0;
1143 
1144   // This is the __NO_INLINE__ define, which just depends on things like the
1145   // optimization level and -fno-inline, not actually whether the backend has
1146   // inlining enabled.
1147   //
1148   // FIXME: This is affected by other options (-fno-inline).
1149   Opts.NoInline = !Opt;
1150 
1151   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1152   switch (SSP) {
1153   default:
1154     Diags.Report(diag::err_drv_invalid_value)
1155       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1156     break;
1157   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1158   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1159   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1160   }
1161 }
1162 
1163 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args) {
1164   using namespace cc1options;
1165   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1166   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1167   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1168       Opts.TokenCache = A->getValue(Args);
1169   else
1170     Opts.TokenCache = Opts.ImplicitPTHInclude;
1171   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1172 
1173   // Add macros from the command line.
1174   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1175          ie = Args.filtered_end(); it != ie; ++it) {
1176     if (it->getOption().matches(OPT_D))
1177       Opts.addMacroDef(it->getValue(Args));
1178     else
1179       Opts.addMacroUndef(it->getValue(Args));
1180   }
1181 
1182   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1183 
1184   // Add the ordered list of -includes.
1185   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1186                                              OPT_include_pth),
1187          ie = Args.filtered_end(); it != ie; ++it) {
1188     // PCH is handled specially, we need to extra the original include path.
1189     if (it->getOption().matches(OPT_include_pch)) {
1190       std::string OriginalFile =
1191         PCHReader::getOriginalSourceFile(it->getValue(Args));
1192 
1193       // FIXME: Don't fail like this.
1194       if (OriginalFile.empty())
1195         exit(1);
1196 
1197       Opts.Includes.push_back(OriginalFile);
1198     } else
1199       Opts.Includes.push_back(it->getValue(Args));
1200   }
1201 }
1202 
1203 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1204                                         ArgList &Args) {
1205   using namespace cc1options;
1206   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1207   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1208   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1209   Opts.ShowComments = Args.hasArg(OPT_C);
1210   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1211 }
1212 
1213 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1214   using namespace cc1options;
1215   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1216   Opts.CPU = getLastArgValue(Args, OPT_mcpu);
1217   Opts.Triple = getLastArgValue(Args, OPT_triple);
1218   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1219 
1220   // Use the host triple if unspecified.
1221   if (Opts.Triple.empty())
1222     Opts.Triple = llvm::sys::getHostTriple();
1223 }
1224 
1225 //
1226 
1227 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1228                                         const char **ArgBegin,
1229                                         const char **ArgEnd,
1230                                         const char *Argv0,
1231                                         void *MainAddr,
1232                                         Diagnostic &Diags) {
1233   // Parse the arguments.
1234   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1235   unsigned MissingArgIndex, MissingArgCount;
1236   llvm::OwningPtr<InputArgList> Args(
1237     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1238 
1239   // Check for missing argument error.
1240   if (MissingArgCount)
1241     Diags.Report(diag::err_drv_missing_argument)
1242       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1243 
1244   // Issue errors on unknown arguments.
1245   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1246          ie = Args->filtered_end(); it != ie; ++it)
1247     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1248 
1249   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1250   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1251   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1252   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1253   FrontendOptions::InputKind DashX =
1254     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1255   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args,
1256                         Argv0, MainAddr);
1257   if (DashX != FrontendOptions::IK_AST)
1258     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1259   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args);
1260   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1261   ParseTargetArgs(Res.getTargetOpts(), *Args);
1262 }
1263