xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 542ad315977cb928130d87e3a72572900e54bc2d) 
1 //===--- CompilerInvocation.cpp -------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "clang/Basic/Diagnostic.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Driver/Arg.h"
14 #include "clang/Driver/ArgList.h"
15 #include "clang/Driver/CC1Options.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/OptTable.h"
18 #include "clang/Driver/Option.h"
19 #include "clang/Frontend/CompilerInvocation.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Frontend/PCHReader.h"
22 #include "llvm/ADT/OwningPtr.h"
23 #include "llvm/ADT/SmallVector.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/StringSwitch.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/System/Host.h"
28 #include "llvm/System/Path.h"
29 using namespace clang;
30 
31 static const char *getAnalysisName(Analyses Kind) {
32   switch (Kind) {
33   default:
34     llvm_unreachable("Unknown analysis kind!");
35 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36   case NAME: return "-" CMDFLAG;
37 #include "clang/Frontend/Analyses.def"
38   }
39 }
40 
41 static const char *getAnalysisStoreName(AnalysisStores Kind) {
42   switch (Kind) {
43   default:
44     llvm_unreachable("Unknown analysis store!");
45 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46   case NAME##Model: return CMDFLAG;
47 #include "clang/Frontend/Analyses.def"
48   }
49 }
50 
51 static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52   switch (Kind) {
53   default:
54     llvm_unreachable("Unknown analysis constraints!");
55 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56   case NAME##Model: return CMDFLAG;
57 #include "clang/Frontend/Analyses.def"
58   }
59 }
60 
61 static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62   switch (Kind) {
63   default:
64     llvm_unreachable("Unknown analysis client!");
65 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66   case PD_##NAME: return CMDFLAG;
67 #include "clang/Frontend/Analyses.def"
68   }
69 }
70 
71 //===----------------------------------------------------------------------===//
72 // Serialization (to args)
73 //===----------------------------------------------------------------------===//
74 
75 static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                                std::vector<std::string> &Res) {
77   for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78     Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79   if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80     Res.push_back("-analyzer-store");
81     Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82   }
83   if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84     Res.push_back("-analyzer-constraints");
85     Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86   }
87   if (Opts.AnalysisDiagOpt != PD_HTML) {
88     Res.push_back("-analyzer-output");
89     Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90   }
91   if (!Opts.AnalyzeSpecificFunction.empty()) {
92     Res.push_back("-analyze-function");
93     Res.push_back(Opts.AnalyzeSpecificFunction);
94   }
95   if (Opts.AnalyzeAll)
96     Res.push_back("-analyzer-opt-analyze-headers");
97   if (Opts.AnalyzerDisplayProgress)
98     Res.push_back("-analyzer-display-progress");
99   if (Opts.AnalyzeNestedBlocks)
100     Res.push_back("-analyzer-opt-analyze-nested-blocks");
101   if (Opts.EagerlyAssume)
102     Res.push_back("-analyzer-eagerly-assume");
103   if (!Opts.PurgeDead)
104     Res.push_back("-analyzer-no-purge-dead");
105   if (Opts.TrimGraph)
106     Res.push_back("-trim-egraph");
107   if (Opts.VisualizeEGDot)
108     Res.push_back("-analyzer-viz-egraph-graphviz");
109   if (Opts.VisualizeEGDot)
110     Res.push_back("-analyzer-viz-egraph-ubigraph");
111   if (Opts.EnableExperimentalChecks)
112     Res.push_back("-analyzer-experimental-checks");
113   if (Opts.EnableExperimentalInternalChecks)
114     Res.push_back("-analyzer-experimental-internal-checks");
115 }
116 
117 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                               std::vector<std::string> &Res) {
119   if (Opts.DebugInfo)
120     Res.push_back("-g");
121   if (Opts.DisableLLVMOpts)
122     Res.push_back("-disable-llvm-optzns");
123   if (Opts.DisableRedZone)
124     Res.push_back("-disable-red-zone");
125   if (!Opts.DwarfDebugFlags.empty()) {
126     Res.push_back("-dwarf-debug-flags");
127     Res.push_back(Opts.DwarfDebugFlags);
128   }
129   if (!Opts.MergeAllConstants)
130     Res.push_back("-fno-merge-all-constants");
131   if (Opts.NoCommon)
132     Res.push_back("-fno-common");
133   if (Opts.NoImplicitFloat)
134     Res.push_back("-no-implicit-float");
135   if (Opts.OptimizeSize) {
136     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137     Res.push_back("-Os");
138   } else if (Opts.OptimizationLevel != 0)
139     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140   if (!Opts.MainFileName.empty()) {
141     Res.push_back("-main-file-name");
142     Res.push_back(Opts.MainFileName);
143   }
144   // SimplifyLibCalls is only derived.
145   // TimePasses is only derived.
146   // UnitAtATime is unused.
147   // UnrollLoops is only derived.
148   // Inlining is only derived.
149 
150   if (Opts.DataSections)
151     Res.push_back("-fdata-sections");
152   if (Opts.FunctionSections)
153     Res.push_back("-ffunction-sections");
154   if (Opts.AsmVerbose)
155     Res.push_back("-masm-verbose");
156   if (!Opts.CodeModel.empty()) {
157     Res.push_back("-mcode-model");
158     Res.push_back(Opts.CodeModel);
159   }
160   if (!Opts.CXAAtExit)
161     Res.push_back("-fno-use-cxa-atexit");
162   if (Opts.CXXCtorDtorAliases)
163     Res.push_back("-mconstructor-aliases");
164   if (!Opts.DebugPass.empty()) {
165     Res.push_back("-mdebug-pass");
166     Res.push_back(Opts.DebugPass);
167   }
168   if (Opts.DisableFPElim)
169     Res.push_back("-mdisable-fp-elim");
170   if (!Opts.FloatABI.empty()) {
171     Res.push_back("-mfloat-abi");
172     Res.push_back(Opts.FloatABI);
173   }
174   if (!Opts.LimitFloatPrecision.empty()) {
175     Res.push_back("-mlimit-float-precision");
176     Res.push_back(Opts.LimitFloatPrecision);
177   }
178   if (Opts.NoZeroInitializedInBSS)
179     Res.push_back("-mno-zero-initialized-bss");
180   switch (Opts.getObjCDispatchMethod()) {
181   case CodeGenOptions::Legacy:
182     break;
183   case CodeGenOptions::Mixed:
184     Res.push_back("-fobjc-dispatch-method=mixed");
185     break;
186   case CodeGenOptions::NonLegacy:
187     Res.push_back("-fobjc-dispatch-method=non-legacy");
188     break;
189   }
190   if (Opts.SoftFloat)
191     Res.push_back("-msoft-float");
192   if (Opts.UnwindTables)
193     Res.push_back("-munwind-tables");
194   if (Opts.RelocationModel != "pic") {
195     Res.push_back("-mrelocation-model");
196     Res.push_back(Opts.RelocationModel);
197   }
198   if (!Opts.VerifyModule)
199     Res.push_back("-disable-llvm-verifier");
200 }
201 
202 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
203                                        std::vector<std::string> &Res) {
204   if (Opts.IncludeSystemHeaders)
205     Res.push_back("-sys-header-deps");
206   if (Opts.UsePhonyTargets)
207     Res.push_back("-MP");
208   if (!Opts.OutputFile.empty()) {
209     Res.push_back("-dependency-file");
210     Res.push_back(Opts.OutputFile);
211   }
212   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
213     Res.push_back("-MT");
214     Res.push_back(Opts.Targets[i]);
215   }
216 }
217 
218 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
219                                  std::vector<std::string> &Res) {
220   if (Opts.IgnoreWarnings)
221     Res.push_back("-w");
222   if (Opts.NoRewriteMacros)
223     Res.push_back("-Wno-rewrite-macros");
224   if (Opts.Pedantic)
225     Res.push_back("-pedantic");
226   if (Opts.PedanticErrors)
227     Res.push_back("-pedantic-errors");
228   if (!Opts.ShowColumn)
229     Res.push_back("-fno-show-column");
230   if (!Opts.ShowLocation)
231     Res.push_back("-fno-show-source-location");
232   if (!Opts.ShowCarets)
233     Res.push_back("-fno-caret-diagnostics");
234   if (!Opts.ShowFixits)
235     Res.push_back("-fno-diagnostics-fixit-info");
236   if (Opts.ShowSourceRanges)
237     Res.push_back("-fdiagnostics-print-source-range-info");
238   if (Opts.ShowColors)
239     Res.push_back("-fcolor-diagnostics");
240   if (Opts.VerifyDiagnostics)
241     Res.push_back("-verify");
242   if (Opts.BinaryOutput)
243     Res.push_back("-fdiagnostics-binary");
244   if (Opts.ShowOptionNames)
245     Res.push_back("-fdiagnostics-show-option");
246   if (Opts.ShowCategories == 1)
247     Res.push_back("-fdiagnostics-show-category=id");
248   else if (Opts.ShowCategories == 2)
249     Res.push_back("-fdiagnostics-show-category=name");
250   if (Opts.ErrorLimit) {
251     Res.push_back("-ferror-limit");
252     Res.push_back(llvm::utostr(Opts.ErrorLimit));
253   }
254   if (Opts.MacroBacktraceLimit
255                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
256     Res.push_back("-fmacro-backtrace-limit");
257     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
258   }
259   if (Opts.TemplateBacktraceLimit
260                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
261     Res.push_back("-ftemplate-backtrace-limit");
262     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
263   }
264 
265   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
266     Res.push_back("-ftabstop");
267     Res.push_back(llvm::utostr(Opts.TabStop));
268   }
269   if (Opts.MessageLength) {
270     Res.push_back("-fmessage-length");
271     Res.push_back(llvm::utostr(Opts.MessageLength));
272   }
273   if (!Opts.DumpBuildInformation.empty()) {
274     Res.push_back("-dump-build-information");
275     Res.push_back(Opts.DumpBuildInformation);
276   }
277   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
278     Res.push_back("-W" + Opts.Warnings[i]);
279 }
280 
281 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
282   switch (Kind) {
283   case FrontendOptions::IK_None:              break;
284   case FrontendOptions::IK_AST:               return "ast";
285   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
286   case FrontendOptions::IK_C:                 return "c";
287   case FrontendOptions::IK_CXX:               return "c++";
288   case FrontendOptions::IK_ObjC:              return "objective-c";
289   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
290   case FrontendOptions::IK_OpenCL:            return "cl";
291   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
292   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
293   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
294   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
295   }
296 
297   llvm_unreachable("Unexpected language kind!");
298   return 0;
299 }
300 
301 static const char *getActionName(frontend::ActionKind Kind) {
302   switch (Kind) {
303   case frontend::PluginAction:
304   case frontend::InheritanceView:
305     llvm_unreachable("Invalid kind!");
306 
307   case frontend::ASTDump:                return "-ast-dump";
308   case frontend::ASTPrint:               return "-ast-print";
309   case frontend::ASTPrintXML:            return "-ast-print-xml";
310   case frontend::ASTView:                return "-ast-view";
311   case frontend::BoostCon:               return "-boostcon";
312   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
313   case frontend::DumpTokens:             return "-dump-tokens";
314   case frontend::EmitAssembly:           return "-S";
315   case frontend::EmitBC:                 return "-emit-llvm-bc";
316   case frontend::EmitHTML:               return "-emit-html";
317   case frontend::EmitLLVM:               return "-emit-llvm";
318   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
319   case frontend::EmitObj:                return "-emit-obj";
320   case frontend::FixIt:                  return "-fixit";
321   case frontend::GeneratePCH:            return "-emit-pch";
322   case frontend::GeneratePTH:            return "-emit-pth";
323   case frontend::InitOnly:               return "-init-only";
324   case frontend::ParseNoop:              return "-parse-noop";
325   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
326   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
327   case frontend::PrintDeclContext:       return "-print-decl-contexts";
328   case frontend::PrintPreprocessedInput: return "-E";
329   case frontend::RewriteMacros:          return "-rewrite-macros";
330   case frontend::RewriteObjC:            return "-rewrite-objc";
331   case frontend::RewriteTest:            return "-rewrite-test";
332   case frontend::RunAnalysis:            return "-analyze";
333   case frontend::RunPreprocessorOnly:    return "-Eonly";
334   }
335 
336   llvm_unreachable("Unexpected language kind!");
337   return 0;
338 }
339 
340 static void FrontendOptsToArgs(const FrontendOptions &Opts,
341                                std::vector<std::string> &Res) {
342   if (!Opts.DebugCodeCompletionPrinter)
343     Res.push_back("-no-code-completion-debug-printer");
344   if (Opts.DisableFree)
345     Res.push_back("-disable-free");
346   if (Opts.RelocatablePCH)
347     Res.push_back("-relocatable-pch");
348   if (Opts.ShowHelp)
349     Res.push_back("-help");
350   if (Opts.ShowMacrosInCodeCompletion)
351     Res.push_back("-code-completion-macros");
352   if (Opts.ShowStats)
353     Res.push_back("-print-stats");
354   if (Opts.ShowTimers)
355     Res.push_back("-ftime-report");
356   if (Opts.ShowVersion)
357     Res.push_back("-version");
358 
359   bool NeedLang = false;
360   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
361     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
362         Opts.Inputs[i].first)
363       NeedLang = true;
364   if (NeedLang) {
365     Res.push_back("-x");
366     Res.push_back(getInputKindName(Opts.Inputs[0].first));
367   }
368   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
369     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
370            "Unable to represent this input vector!");
371     Res.push_back(Opts.Inputs[i].second);
372   }
373 
374   if (!Opts.OutputFile.empty()) {
375     Res.push_back("-o");
376     Res.push_back(Opts.OutputFile);
377   }
378   if (!Opts.ViewClassInheritance.empty()) {
379     Res.push_back("-cxx-inheritance-view");
380     Res.push_back(Opts.ViewClassInheritance);
381   }
382   if (!Opts.CodeCompletionAt.FileName.empty()) {
383     Res.push_back("-code-completion-at");
384     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
385                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
386                   llvm::utostr(Opts.CodeCompletionAt.Column));
387   }
388   if (Opts.ProgramAction != frontend::InheritanceView &&
389       Opts.ProgramAction != frontend::PluginAction)
390     Res.push_back(getActionName(Opts.ProgramAction));
391   if (!Opts.ActionName.empty()) {
392     Res.push_back("-plugin");
393     Res.push_back(Opts.ActionName);
394   }
395   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
396     Res.push_back("-load");
397     Res.push_back(Opts.Plugins[i]);
398   }
399   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
400     Res.push_back("-ast-merge");
401     Res.push_back(Opts.ASTMergeFiles[i]);
402   }
403   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
404     Res.push_back("-mllvm");
405     Res.push_back(Opts.LLVMArgs[i]);
406   }
407 }
408 
409 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
410                                    std::vector<std::string> &Res) {
411   if (Opts.Sysroot != "/") {
412     Res.push_back("-isysroot");
413     Res.push_back(Opts.Sysroot);
414   }
415 
416   /// User specified include entries.
417   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
418     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
419     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
420       llvm::report_fatal_error("Invalid option set!");
421     if (E.IsUserSupplied) {
422       if (E.Group == frontend::After) {
423         Res.push_back("-idirafter");
424       } else if (E.Group == frontend::Quoted) {
425         Res.push_back("-iquote");
426       } else if (E.Group == frontend::System) {
427         Res.push_back("-isystem");
428       } else {
429         assert(E.Group == frontend::Angled && "Invalid group!");
430         Res.push_back(E.IsFramework ? "-F" : "-I");
431       }
432     } else {
433       if (E.Group != frontend::Angled && E.Group != frontend::System)
434         llvm::report_fatal_error("Invalid option set!");
435       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
436                     "-iwithprefix");
437     }
438     Res.push_back(E.Path);
439   }
440 
441   if (!Opts.EnvIncPath.empty()) {
442     // FIXME: Provide an option for this, and move env detection to driver.
443     llvm::report_fatal_error("Not yet implemented!");
444   }
445   if (!Opts.CEnvIncPath.empty()) {
446     // FIXME: Provide an option for this, and move env detection to driver.
447     llvm::report_fatal_error("Not yet implemented!");
448   }
449   if (!Opts.ObjCEnvIncPath.empty()) {
450     // FIXME: Provide an option for this, and move env detection to driver.
451     llvm::report_fatal_error("Not yet implemented!");
452   }
453   if (!Opts.CXXEnvIncPath.empty()) {
454     // FIXME: Provide an option for this, and move env detection to driver.
455     llvm::report_fatal_error("Not yet implemented!");
456   }
457   if (!Opts.ObjCXXEnvIncPath.empty()) {
458     // FIXME: Provide an option for this, and move env detection to driver.
459     llvm::report_fatal_error("Not yet implemented!");
460   }
461   if (!Opts.ResourceDir.empty()) {
462     Res.push_back("-resource-dir");
463     Res.push_back(Opts.ResourceDir);
464   }
465   if (!Opts.UseStandardIncludes)
466     Res.push_back("-nostdinc");
467   if (!Opts.UseStandardCXXIncludes)
468     Res.push_back("-nostdinc++");
469   if (Opts.Verbose)
470     Res.push_back("-v");
471 }
472 
473 static void LangOptsToArgs(const LangOptions &Opts,
474                            std::vector<std::string> &Res) {
475   LangOptions DefaultLangOpts;
476 
477   // FIXME: Need to set -std to get all the implicit options.
478 
479   // FIXME: We want to only pass options relative to the defaults, which
480   // requires constructing a target. :(
481   //
482   // It would be better to push the all target specific choices into the driver,
483   // so that everything below that was more uniform.
484 
485   if (Opts.Trigraphs)
486     Res.push_back("-trigraphs");
487   // Implicit based on the input kind:
488   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
489   // Implicit based on the input language standard:
490   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
491   if (Opts.DollarIdents)
492     Res.push_back("-fdollars-in-identifiers");
493   if (Opts.GNUMode && !Opts.GNUKeywords)
494     Res.push_back("-fno-gnu-keywords");
495   if (!Opts.GNUMode && Opts.GNUKeywords)
496     Res.push_back("-fgnu-keywords");
497   if (Opts.Microsoft)
498     Res.push_back("-fms-extensions");
499   if (Opts.ObjCNonFragileABI)
500     Res.push_back("-fobjc-nonfragile-abi");
501   if (Opts.ObjCNonFragileABI2)
502     Res.push_back("-fobjc-nonfragile-abi2");
503   // NoInline is implicit.
504   if (!Opts.CXXOperatorNames)
505     Res.push_back("-fno-operator-names");
506   if (Opts.PascalStrings)
507     Res.push_back("-fpascal-strings");
508   if (Opts.CatchUndefined)
509     Res.push_back("-fcatch-undefined-behavior");
510   if (Opts.WritableStrings)
511     Res.push_back("-fwritable-strings");
512   if (Opts.ConstStrings)
513     Res.push_back("-Wwrite-strings");
514   if (!Opts.LaxVectorConversions)
515     Res.push_back("-fno-lax-vector-conversions");
516   if (Opts.AltiVec)
517     Res.push_back("-faltivec");
518   if (Opts.Exceptions)
519     Res.push_back("-fexceptions");
520   if (Opts.SjLjExceptions)
521     Res.push_back("-fsjlj-exceptions");
522   if (!Opts.RTTI)
523     Res.push_back("-fno-rtti");
524   if (!Opts.NeXTRuntime)
525     Res.push_back("-fgnu-runtime");
526   if (Opts.Freestanding)
527     Res.push_back("-ffreestanding");
528   if (Opts.NoBuiltin)
529     Res.push_back("-fno-builtin");
530   if (!Opts.AssumeSaneOperatorNew)
531     Res.push_back("-fno-assume-sane-operator-new");
532   if (!Opts.ThreadsafeStatics)
533     Res.push_back("-fno-threadsafe-statics");
534   if (Opts.POSIXThreads)
535     Res.push_back("-pthread");
536   if (Opts.Blocks)
537     Res.push_back("-fblocks");
538   if (Opts.EmitAllDecls)
539     Res.push_back("-femit-all-decls");
540   if (Opts.MathErrno)
541     Res.push_back("-fmath-errno");
542   if (Opts.OverflowChecking)
543     Res.push_back("-ftrapv");
544   if (Opts.HeinousExtensions)
545     Res.push_back("-fheinous-gnu-extensions");
546   // Optimize is implicit.
547   // OptimizeSize is implicit.
548   if (Opts.Static)
549     Res.push_back("-static-define");
550   if (Opts.DumpRecordLayouts)
551     Res.push_back("-fdump-record-layouts");
552   if (Opts.DumpVTableLayouts)
553     Res.push_back("-fdump-vtable-layouts");
554   if (Opts.NoBitFieldTypeAlign)
555     Res.push_back("-fno-bitfield-type-alignment");
556   if (Opts.SjLjExceptions)
557     Res.push_back("-fsjlj-exceptions");
558   if (Opts.PICLevel) {
559     Res.push_back("-pic-level");
560     Res.push_back(llvm::utostr(Opts.PICLevel));
561   }
562   if (Opts.ObjCGCBitmapPrint)
563     Res.push_back("-print-ivar-layout");
564   if (Opts.NoConstantCFStrings)
565     Res.push_back("-fno-constant-cfstrings");
566   if (!Opts.AccessControl)
567     Res.push_back("-fno-access-control");
568   if (!Opts.CharIsSigned)
569     Res.push_back("-fno-signed-char");
570   if (Opts.ShortWChar)
571     Res.push_back("-fshort-wchar");
572   if (!Opts.ElideConstructors)
573     Res.push_back("-fno-elide-constructors");
574   if (Opts.getGCMode() != LangOptions::NonGC) {
575     if (Opts.getGCMode() == LangOptions::HybridGC) {
576       Res.push_back("-fobjc-gc");
577     } else {
578       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
579       Res.push_back("-fobjc-gc-only");
580     }
581   }
582   if (Opts.getVisibilityMode() != LangOptions::Default) {
583     Res.push_back("-fvisibility");
584     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
585       Res.push_back("hidden");
586     } else {
587       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
588              "Invalid visibility!");
589       Res.push_back("protected");
590     }
591   }
592   if (Opts.getStackProtectorMode() != 0) {
593     Res.push_back("-stack-protector");
594     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
595   }
596   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
597     Res.push_back("-ftemplate-depth");
598     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
599   }
600   if (!Opts.ObjCConstantStringClass.empty()) {
601     Res.push_back("-fconstant-string-class");
602     Res.push_back(Opts.ObjCConstantStringClass);
603   }
604 }
605 
606 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
607                                    std::vector<std::string> &Res) {
608   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
609     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
610                   Opts.Macros[i].first);
611   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
612     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
613     Res.push_back("-include");
614     Res.push_back(Opts.Includes[i]);
615   }
616   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
617     Res.push_back("-imacros");
618     Res.push_back(Opts.MacroIncludes[i]);
619   }
620   if (!Opts.UsePredefines)
621     Res.push_back("-undef");
622   if (Opts.DetailedRecord)
623     Res.push_back("-detailed-preprocessing-record");
624   if (!Opts.ImplicitPCHInclude.empty()) {
625     Res.push_back("-include-pch");
626     Res.push_back(Opts.ImplicitPCHInclude);
627   }
628   if (!Opts.ImplicitPTHInclude.empty()) {
629     Res.push_back("-include-pth");
630     Res.push_back(Opts.ImplicitPTHInclude);
631   }
632   if (!Opts.TokenCache.empty()) {
633     if (Opts.ImplicitPTHInclude.empty()) {
634       Res.push_back("-token-cache");
635       Res.push_back(Opts.TokenCache);
636     } else
637       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
638              "Unsupported option combination!");
639   }
640   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
641     Res.push_back("-remap-file");
642     Res.push_back(Opts.RemappedFiles[i].first + ";" +
643                   Opts.RemappedFiles[i].second);
644   }
645 }
646 
647 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
648                                          std::vector<std::string> &Res) {
649   if (!Opts.ShowCPP && !Opts.ShowMacros)
650     llvm::report_fatal_error("Invalid option combination!");
651 
652   if (Opts.ShowCPP && Opts.ShowMacros)
653     Res.push_back("-dD");
654   else if (!Opts.ShowCPP && Opts.ShowMacros)
655     Res.push_back("-dM");
656 
657   if (!Opts.ShowLineMarkers)
658     Res.push_back("-P");
659   if (Opts.ShowComments)
660     Res.push_back("-C");
661   if (Opts.ShowMacroComments)
662     Res.push_back("-CC");
663 }
664 
665 static void TargetOptsToArgs(const TargetOptions &Opts,
666                              std::vector<std::string> &Res) {
667   Res.push_back("-triple");
668   Res.push_back(Opts.Triple);
669   if (!Opts.CPU.empty()) {
670     Res.push_back("-target-cpu");
671     Res.push_back(Opts.CPU);
672   }
673   if (!Opts.ABI.empty()) {
674     Res.push_back("-target-abi");
675     Res.push_back(Opts.ABI);
676   }
677   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
678     Res.push_back("-target-feature");
679     Res.push_back(Opts.Features[i]);
680   }
681 }
682 
683 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
684   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
685   CodeGenOptsToArgs(getCodeGenOpts(), Res);
686   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
687   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
688   FrontendOptsToArgs(getFrontendOpts(), Res);
689   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
690   LangOptsToArgs(getLangOpts(), Res);
691   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
692   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
693   TargetOptsToArgs(getTargetOpts(), Res);
694 }
695 
696 //===----------------------------------------------------------------------===//
697 // Deserialization (to args)
698 //===----------------------------------------------------------------------===//
699 
700 using namespace clang::driver;
701 using namespace clang::driver::cc1options;
702 
703 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
704                                        llvm::StringRef Default = "") {
705   if (Arg *A = Args.getLastArg(ID))
706     return A->getValue(Args);
707   return Default;
708 }
709 
710 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
711                               int Default, Diagnostic &Diags) {
712   Arg *A = Args.getLastArg(ID);
713   if (!A)
714     return Default;
715 
716   int Res = Default;
717   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
718     Diags.Report(diag::err_drv_invalid_int_value)
719         << A->getAsString(Args) << A->getValue(Args);
720 
721   return Res;
722 }
723 
724 static std::vector<std::string>
725 getAllArgValues(ArgList &Args, cc1options::ID ID) {
726   llvm::SmallVector<const char *, 16> Values;
727   Args.AddAllArgValues(Values, ID);
728   return std::vector<std::string>(Values.begin(), Values.end());
729 }
730 
731 //
732 
733 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
734                               Diagnostic &Diags) {
735   using namespace cc1options;
736 
737   Opts.AnalysisList.clear();
738 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
739   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
740 #include "clang/Frontend/Analyses.def"
741 
742   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
743     llvm::StringRef Name = A->getValue(Args);
744     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
745 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
746       .Case(CMDFLAG, NAME##Model)
747 #include "clang/Frontend/Analyses.def"
748       .Default(NumStores);
749     // FIXME: Error handling.
750     if (Value == NumStores)
751       Diags.Report(diag::err_drv_invalid_value)
752         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
753     else
754       Opts.AnalysisStoreOpt = Value;
755   }
756 
757   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
758     llvm::StringRef Name = A->getValue(Args);
759     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
760 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
761       .Case(CMDFLAG, NAME##Model)
762 #include "clang/Frontend/Analyses.def"
763       .Default(NumConstraints);
764     // FIXME: Error handling.
765     if (Value == NumConstraints)
766       Diags.Report(diag::err_drv_invalid_value)
767         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
768     else
769       Opts.AnalysisConstraintsOpt = Value;
770   }
771 
772   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
773     llvm::StringRef Name = A->getValue(Args);
774     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
775 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
776       .Case(CMDFLAG, PD_##NAME)
777 #include "clang/Frontend/Analyses.def"
778       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
779     // FIXME: Error handling.
780     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
781       Diags.Report(diag::err_drv_invalid_value)
782         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
783     else
784       Opts.AnalysisDiagOpt = Value;
785   }
786 
787   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
788   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
789   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
790   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
791   Opts.AnalyzeNestedBlocks =
792     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
793   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
794   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
795   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
796   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
797   Opts.EnableExperimentalInternalChecks =
798     Args.hasArg(OPT_analyzer_experimental_internal_checks);
799   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
800   Opts.MaxNodes = getLastArgIntValue(Args, OPT_analyzer_max_nodes,150000,Diags);
801   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
802 }
803 
804 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
805                              Diagnostic &Diags) {
806   using namespace cc1options;
807   // -Os implies -O2
808   if (Args.hasArg(OPT_Os))
809     Opts.OptimizationLevel = 2;
810   else {
811     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
812     if (Opts.OptimizationLevel > 3) {
813       Diags.Report(diag::err_drv_invalid_value)
814         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
815       Opts.OptimizationLevel = 3;
816     }
817   }
818 
819   // We must always run at least the always inlining pass.
820   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
821     : CodeGenOptions::OnlyAlwaysInlining;
822 
823   Opts.DebugInfo = Args.hasArg(OPT_g);
824   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
825   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
826   Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
827   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
828   Opts.NoCommon = Args.hasArg(OPT_fno_common);
829   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
830   Opts.OptimizeSize = Args.hasArg(OPT_Os);
831   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
832 
833   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
834   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
835   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
836   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
837   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
838   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
839   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
840   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
841   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
842   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
843   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
844   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
845 
846   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
847   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
848 
849   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
850   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
851 
852   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
853     llvm::StringRef Name = A->getValue(Args);
854     unsigned Method = llvm::StringSwitch<unsigned>(Name)
855       .Case("legacy", CodeGenOptions::Legacy)
856       .Case("non-legacy", CodeGenOptions::NonLegacy)
857       .Case("mixed", CodeGenOptions::Mixed)
858       .Default(~0U);
859     if (Method == ~0U)
860       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
861     else
862       Opts.ObjCDispatchMethod = Method;
863   }
864 }
865 
866 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
867                                       ArgList &Args) {
868   using namespace cc1options;
869   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
870   Opts.Targets = getAllArgValues(Args, OPT_MT);
871   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
872   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
873 }
874 
875 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
876                                 Diagnostic &Diags) {
877   using namespace cc1options;
878   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
879   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
880   Opts.Pedantic = Args.hasArg(OPT_pedantic);
881   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
882   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
883   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
884   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
885   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
886   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
887   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
888 
889   llvm::StringRef ShowCategory =
890     getLastArgValue(Args, OPT_fdiagnostics_show_category, "none");
891   if (ShowCategory == "none")
892     Opts.ShowCategories = 0;
893   else if (ShowCategory == "id")
894     Opts.ShowCategories = 1;
895   else if (ShowCategory == "name")
896     Opts.ShowCategories = 2;
897   else
898     Diags.Report(diag::err_drv_invalid_value)
899       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
900       << ShowCategory;
901 
902   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
903   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
904   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
905   Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
906   Opts.MacroBacktraceLimit
907     = getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
908                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
909   Opts.TemplateBacktraceLimit
910     = getLastArgIntValue(Args, OPT_ftemplate_backtrace_limit,
911                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
912                          Diags);
913   Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
914                                     DiagnosticOptions::DefaultTabStop, Diags);
915   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
916     Diags.Report(diag::warn_ignoring_ftabstop_value)
917       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
918     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
919   }
920   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
921   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
922   Opts.Warnings = getAllArgValues(Args, OPT_W);
923 }
924 
925 static FrontendOptions::InputKind
926 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
927   using namespace cc1options;
928   Opts.ProgramAction = frontend::ParseSyntaxOnly;
929   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
930     switch (A->getOption().getID()) {
931     default:
932       assert(0 && "Invalid option in group!");
933     case OPT_ast_dump:
934       Opts.ProgramAction = frontend::ASTDump; break;
935     case OPT_ast_print:
936       Opts.ProgramAction = frontend::ASTPrint; break;
937     case OPT_ast_print_xml:
938       Opts.ProgramAction = frontend::ASTPrintXML; break;
939     case OPT_ast_view:
940       Opts.ProgramAction = frontend::ASTView; break;
941     case OPT_boostcon:
942       Opts.ProgramAction = frontend::BoostCon; break;
943     case OPT_dump_raw_tokens:
944       Opts.ProgramAction = frontend::DumpRawTokens; break;
945     case OPT_dump_tokens:
946       Opts.ProgramAction = frontend::DumpTokens; break;
947     case OPT_S:
948       Opts.ProgramAction = frontend::EmitAssembly; break;
949     case OPT_emit_llvm_bc:
950       Opts.ProgramAction = frontend::EmitBC; break;
951     case OPT_emit_html:
952       Opts.ProgramAction = frontend::EmitHTML; break;
953     case OPT_emit_llvm:
954       Opts.ProgramAction = frontend::EmitLLVM; break;
955     case OPT_emit_llvm_only:
956       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
957     case OPT_emit_obj:
958       Opts.ProgramAction = frontend::EmitObj; break;
959     case OPT_fixit_EQ:
960       Opts.FixItSuffix = A->getValue(Args);
961       // fall-through!
962     case OPT_fixit:
963       Opts.ProgramAction = frontend::FixIt; break;
964     case OPT_emit_pch:
965       Opts.ProgramAction = frontend::GeneratePCH; break;
966     case OPT_emit_pth:
967       Opts.ProgramAction = frontend::GeneratePTH; break;
968     case OPT_init_only:
969       Opts.ProgramAction = frontend::InitOnly; break;
970     case OPT_parse_noop:
971       Opts.ProgramAction = frontend::ParseNoop; break;
972     case OPT_parse_print_callbacks:
973       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
974     case OPT_fsyntax_only:
975       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
976     case OPT_print_decl_contexts:
977       Opts.ProgramAction = frontend::PrintDeclContext; break;
978     case OPT_E:
979       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
980     case OPT_rewrite_macros:
981       Opts.ProgramAction = frontend::RewriteMacros; break;
982     case OPT_rewrite_objc:
983       Opts.ProgramAction = frontend::RewriteObjC; break;
984     case OPT_rewrite_test:
985       Opts.ProgramAction = frontend::RewriteTest; break;
986     case OPT_analyze:
987       Opts.ProgramAction = frontend::RunAnalysis; break;
988     case OPT_Eonly:
989       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
990     }
991   }
992   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
993     Opts.ProgramAction = frontend::PluginAction;
994     Opts.ActionName = A->getValue(Args);
995   }
996 
997   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
998     Opts.CodeCompletionAt =
999       ParsedSourceLocation::FromString(A->getValue(Args));
1000     if (Opts.CodeCompletionAt.FileName.empty())
1001       Diags.Report(diag::err_drv_invalid_value)
1002         << A->getAsString(Args) << A->getValue(Args);
1003   }
1004   Opts.DebugCodeCompletionPrinter =
1005     !Args.hasArg(OPT_no_code_completion_debug_printer);
1006   Opts.DisableFree = Args.hasArg(OPT_disable_free);
1007 
1008   Opts.OutputFile = getLastArgValue(Args, OPT_o);
1009   Opts.Plugins = getAllArgValues(Args, OPT_load);
1010   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1011   Opts.ShowHelp = Args.hasArg(OPT_help);
1012   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1013   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1014   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1015   Opts.ShowVersion = Args.hasArg(OPT_version);
1016   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
1017   Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
1018   Opts.LLVMArgs = getAllArgValues(Args, OPT_mllvm);
1019 
1020   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
1021   if (const Arg *A = Args.getLastArg(OPT_x)) {
1022     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
1023       .Case("c", FrontendOptions::IK_C)
1024       .Case("cl", FrontendOptions::IK_OpenCL)
1025       .Case("c", FrontendOptions::IK_C)
1026       .Case("cl", FrontendOptions::IK_OpenCL)
1027       .Case("c++", FrontendOptions::IK_CXX)
1028       .Case("objective-c", FrontendOptions::IK_ObjC)
1029       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
1030       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
1031       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
1032       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
1033       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
1034       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1035       .Case("c-header", FrontendOptions::IK_C)
1036       .Case("objective-c-header", FrontendOptions::IK_ObjC)
1037       .Case("c++-header", FrontendOptions::IK_CXX)
1038       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1039       .Case("ast", FrontendOptions::IK_AST)
1040       .Default(FrontendOptions::IK_None);
1041     if (DashX == FrontendOptions::IK_None)
1042       Diags.Report(diag::err_drv_invalid_value)
1043         << A->getAsString(Args) << A->getValue(Args);
1044   }
1045 
1046   // '-' is the default input if none is given.
1047   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
1048   Opts.Inputs.clear();
1049   if (Inputs.empty())
1050     Inputs.push_back("-");
1051   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1052     FrontendOptions::InputKind IK = DashX;
1053     if (IK == FrontendOptions::IK_None) {
1054       IK = FrontendOptions::getInputKindForExtension(
1055         llvm::StringRef(Inputs[i]).rsplit('.').second);
1056       // FIXME: Remove this hack.
1057       if (i == 0)
1058         DashX = IK;
1059     }
1060     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1061   }
1062 
1063   return DashX;
1064 }
1065 
1066 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1067                                                  void *MainAddr) {
1068   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1069 
1070   if (!P.isEmpty()) {
1071     P.eraseComponent();  // Remove /clang from foo/bin/clang
1072     P.eraseComponent();  // Remove /bin   from foo/bin
1073 
1074     // Get foo/lib/clang/<version>/include
1075     P.appendComponent("lib");
1076     P.appendComponent("clang");
1077     P.appendComponent(CLANG_VERSION_STRING);
1078   }
1079 
1080   return P.str();
1081 }
1082 
1083 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1084   using namespace cc1options;
1085   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1086   Opts.Verbose = Args.hasArg(OPT_v);
1087   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1088   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1089   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1090   Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1091 
1092   // Add -I... and -F... options in order.
1093   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1094          ie = Args.filtered_end(); it != ie; ++it)
1095     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1096                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1097 
1098   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1099   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1100   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1101                                              OPT_iwithprefixbefore),
1102          ie = Args.filtered_end(); it != ie; ++it) {
1103     if (it->getOption().matches(OPT_iprefix))
1104       Prefix = it->getValue(Args);
1105     else if (it->getOption().matches(OPT_iwithprefix))
1106       Opts.AddPath(Prefix.str() + it->getValue(Args),
1107                    frontend::System, false, false);
1108     else
1109       Opts.AddPath(Prefix.str() + it->getValue(Args),
1110                    frontend::Angled, false, false);
1111   }
1112 
1113   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1114          ie = Args.filtered_end(); it != ie; ++it)
1115     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1116   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1117          ie = Args.filtered_end(); it != ie; ++it)
1118     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1119   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1120          ie = Args.filtered_end(); it != ie; ++it)
1121     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1122 
1123   // FIXME: Need options for the various environment variables!
1124 }
1125 
1126 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1127                           FrontendOptions::InputKind IK,
1128                           Diagnostic &Diags) {
1129   // FIXME: Cleanup per-file based stuff.
1130 
1131   // Set some properties which depend soley on the input kind; it would be nice
1132   // to move these to the language standard, and have the driver resolve the
1133   // input kind + language standard.
1134   if (IK == FrontendOptions::IK_Asm) {
1135     Opts.AsmPreprocessor = 1;
1136   } else if (IK == FrontendOptions::IK_ObjC ||
1137              IK == FrontendOptions::IK_ObjCXX ||
1138              IK == FrontendOptions::IK_PreprocessedObjC ||
1139              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1140     Opts.ObjC1 = Opts.ObjC2 = 1;
1141   }
1142 
1143   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1144   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1145     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1146 #define LANGSTANDARD(id, name, desc, features) \
1147       .Case(name, LangStandard::lang_##id)
1148 #include "clang/Frontend/LangStandards.def"
1149       .Default(LangStandard::lang_unspecified);
1150     if (LangStd == LangStandard::lang_unspecified)
1151       Diags.Report(diag::err_drv_invalid_value)
1152         << A->getAsString(Args) << A->getValue(Args);
1153   }
1154 
1155   if (LangStd == LangStandard::lang_unspecified) {
1156     // Based on the base language, pick one.
1157     switch (IK) {
1158     case FrontendOptions::IK_None:
1159     case FrontendOptions::IK_AST:
1160       assert(0 && "Invalid input kind!");
1161     case FrontendOptions::IK_OpenCL:
1162       LangStd = LangStandard::lang_opencl;
1163       break;
1164     case FrontendOptions::IK_Asm:
1165     case FrontendOptions::IK_C:
1166     case FrontendOptions::IK_PreprocessedC:
1167     case FrontendOptions::IK_ObjC:
1168     case FrontendOptions::IK_PreprocessedObjC:
1169       LangStd = LangStandard::lang_gnu99;
1170       break;
1171     case FrontendOptions::IK_CXX:
1172     case FrontendOptions::IK_PreprocessedCXX:
1173     case FrontendOptions::IK_ObjCXX:
1174     case FrontendOptions::IK_PreprocessedObjCXX:
1175       LangStd = LangStandard::lang_gnucxx98;
1176       break;
1177     }
1178   }
1179 
1180   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1181   Opts.BCPLComment = Std.hasBCPLComments();
1182   Opts.C99 = Std.isC99();
1183   Opts.CPlusPlus = Std.isCPlusPlus();
1184   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1185   Opts.Digraphs = Std.hasDigraphs();
1186   Opts.GNUMode = Std.isGNUMode();
1187   Opts.GNUInline = !Std.isC99();
1188   Opts.HexFloats = Std.hasHexFloats();
1189   Opts.ImplicitInt = Std.hasImplicitInt();
1190 
1191   // OpenCL has some additional defaults.
1192   if (LangStd == LangStandard::lang_opencl) {
1193     Opts.OpenCL = 1;
1194     Opts.AltiVec = 1;
1195     Opts.CXXOperatorNames = 1;
1196     Opts.LaxVectorConversions = 1;
1197   }
1198 
1199   // OpenCL and C++ both have bool, true, false keywords.
1200   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1201 
1202   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1203   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1204   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1205   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1206   // name, as it doesn't seem a useful distinction.
1207   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1208                                   Opts.GNUMode);
1209 
1210   if (Opts.CPlusPlus)
1211     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1212 
1213   if (Args.hasArg(OPT_fobjc_gc_only))
1214     Opts.setGCMode(LangOptions::GCOnly);
1215   else if (Args.hasArg(OPT_fobjc_gc))
1216     Opts.setGCMode(LangOptions::HybridGC);
1217 
1218   if (Args.hasArg(OPT_print_ivar_layout))
1219     Opts.ObjCGCBitmapPrint = 1;
1220   if (Args.hasArg(OPT_fno_constant_cfstrings))
1221     Opts.NoConstantCFStrings = 1;
1222 
1223   if (Args.hasArg(OPT_faltivec))
1224     Opts.AltiVec = 1;
1225 
1226   if (Args.hasArg(OPT_pthread))
1227     Opts.POSIXThreads = 1;
1228 
1229   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1230                                         "default");
1231   if (Vis == "default")
1232     Opts.setVisibilityMode(LangOptions::Default);
1233   else if (Vis == "hidden")
1234     Opts.setVisibilityMode(LangOptions::Hidden);
1235   else if (Vis == "protected")
1236     Opts.setVisibilityMode(LangOptions::Protected);
1237   else
1238     Diags.Report(diag::err_drv_invalid_value)
1239       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1240 
1241   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1242 
1243   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1244   // is specified, or -std is set to a conforming mode.
1245   Opts.Trigraphs = !Opts.GNUMode;
1246   if (Args.hasArg(OPT_trigraphs))
1247     Opts.Trigraphs = 1;
1248 
1249   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1250                                    OPT_fno_dollars_in_identifiers,
1251                                    !Opts.AsmPreprocessor);
1252   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1253   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1254   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1255   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1256   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1257     Opts.LaxVectorConversions = 0;
1258   if (Args.hasArg(OPT_fno_threadsafe_statics))
1259     Opts.ThreadsafeStatics = 0;
1260   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1261   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1262   Opts.Blocks = Args.hasArg(OPT_fblocks);
1263   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1264   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1265   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1266   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1267   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1268   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1269   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1270   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1271   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1272   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 1024,
1273                                                Diags);
1274   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1275   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1276                                                  OPT_fconstant_string_class);
1277   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1278   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1279   if (Opts.ObjCNonFragileABI2)
1280     Opts.ObjCNonFragileABI = true;
1281   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1282   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1283   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1284   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1285   Opts.Static = Args.hasArg(OPT_static_define);
1286   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1287   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1288   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1289   Opts.OptimizeSize = 0;
1290 
1291   // FIXME: Eliminate this dependency.
1292   unsigned Opt =
1293     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1294   Opts.Optimize = Opt != 0;
1295 
1296   // This is the __NO_INLINE__ define, which just depends on things like the
1297   // optimization level and -fno-inline, not actually whether the backend has
1298   // inlining enabled.
1299   //
1300   // FIXME: This is affected by other options (-fno-inline).
1301   Opts.NoInline = !Opt;
1302 
1303   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1304   switch (SSP) {
1305   default:
1306     Diags.Report(diag::err_drv_invalid_value)
1307       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1308     break;
1309   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1310   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1311   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1312   }
1313 }
1314 
1315 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1316                                   Diagnostic &Diags) {
1317   using namespace cc1options;
1318   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1319   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1320   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1321       Opts.TokenCache = A->getValue(Args);
1322   else
1323     Opts.TokenCache = Opts.ImplicitPTHInclude;
1324   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1325   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1326   // Add macros from the command line.
1327   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1328          ie = Args.filtered_end(); it != ie; ++it) {
1329     if (it->getOption().matches(OPT_D))
1330       Opts.addMacroDef(it->getValue(Args));
1331     else
1332       Opts.addMacroUndef(it->getValue(Args));
1333   }
1334 
1335   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1336 
1337   // Add the ordered list of -includes.
1338   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1339                                              OPT_include_pth),
1340          ie = Args.filtered_end(); it != ie; ++it) {
1341     // PCH is handled specially, we need to extra the original include path.
1342     if (it->getOption().matches(OPT_include_pch)) {
1343       std::string OriginalFile =
1344         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1345       if (OriginalFile.empty())
1346         continue;
1347 
1348       Opts.Includes.push_back(OriginalFile);
1349     } else
1350       Opts.Includes.push_back(it->getValue(Args));
1351   }
1352 
1353   // Include 'altivec.h' if -faltivec option present
1354   if (Args.hasArg(OPT_faltivec))
1355     Opts.Includes.push_back("altivec.h");
1356 
1357   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1358          ie = Args.filtered_end(); it != ie; ++it) {
1359     std::pair<llvm::StringRef,llvm::StringRef> Split =
1360       llvm::StringRef(it->getValue(Args)).split(';');
1361 
1362     if (Split.second.empty()) {
1363       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1364       continue;
1365     }
1366 
1367     Opts.addRemappedFile(Split.first, Split.second);
1368   }
1369 }
1370 
1371 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1372                                         ArgList &Args) {
1373   using namespace cc1options;
1374   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1375   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1376   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1377   Opts.ShowComments = Args.hasArg(OPT_C);
1378   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1379 }
1380 
1381 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1382   using namespace cc1options;
1383   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1384   Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1385   Opts.Triple = getLastArgValue(Args, OPT_triple);
1386   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1387 
1388   // Use the host triple if unspecified.
1389   if (Opts.Triple.empty())
1390     Opts.Triple = llvm::sys::getHostTriple();
1391 }
1392 
1393 //
1394 
1395 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1396                                         const char **ArgBegin,
1397                                         const char **ArgEnd,
1398                                         Diagnostic &Diags) {
1399   // Parse the arguments.
1400   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1401   unsigned MissingArgIndex, MissingArgCount;
1402   llvm::OwningPtr<InputArgList> Args(
1403     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1404 
1405   // Check for missing argument error.
1406   if (MissingArgCount)
1407     Diags.Report(diag::err_drv_missing_argument)
1408       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1409 
1410   // Issue errors on unknown arguments.
1411   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1412          ie = Args->filtered_end(); it != ie; ++it)
1413     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1414 
1415   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1416   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1417   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1418   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1419   FrontendOptions::InputKind DashX =
1420     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1421   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1422   if (DashX != FrontendOptions::IK_AST)
1423     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1424   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1425   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1426   ParseTargetArgs(Res.getTargetOpts(), *Args);
1427 }
1428