xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision bb7ac52e0288ff88cacd2577137cf64955a643c6) 
1 //===--- CompilerInvocation.cpp -------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "clang/Basic/Diagnostic.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Driver/Arg.h"
14 #include "clang/Driver/ArgList.h"
15 #include "clang/Driver/CC1Options.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/OptTable.h"
18 #include "clang/Driver/Option.h"
19 #include "clang/Frontend/CompilerInvocation.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Frontend/PCHReader.h"
22 #include "llvm/ADT/OwningPtr.h"
23 #include "llvm/ADT/SmallVector.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/StringSwitch.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/System/Host.h"
28 #include "llvm/System/Path.h"
29 using namespace clang;
30 
31 static const char *getAnalysisName(Analyses Kind) {
32   switch (Kind) {
33   default:
34     llvm_unreachable("Unknown analysis kind!");
35 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36   case NAME: return "-" CMDFLAG;
37 #include "clang/Frontend/Analyses.def"
38   }
39 }
40 
41 static const char *getAnalysisStoreName(AnalysisStores Kind) {
42   switch (Kind) {
43   default:
44     llvm_unreachable("Unknown analysis store!");
45 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46   case NAME##Model: return CMDFLAG;
47 #include "clang/Frontend/Analyses.def"
48   }
49 }
50 
51 static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52   switch (Kind) {
53   default:
54     llvm_unreachable("Unknown analysis constraints!");
55 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56   case NAME##Model: return CMDFLAG;
57 #include "clang/Frontend/Analyses.def"
58   }
59 }
60 
61 static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62   switch (Kind) {
63   default:
64     llvm_unreachable("Unknown analysis client!");
65 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66   case PD_##NAME: return CMDFLAG;
67 #include "clang/Frontend/Analyses.def"
68   }
69 }
70 
71 //===----------------------------------------------------------------------===//
72 // Serialization (to args)
73 //===----------------------------------------------------------------------===//
74 
75 static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                                std::vector<std::string> &Res) {
77   for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78     Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79   if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80     Res.push_back("-analyzer-store");
81     Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82   }
83   if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84     Res.push_back("-analyzer-constraints");
85     Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86   }
87   if (Opts.AnalysisDiagOpt != PD_HTML) {
88     Res.push_back("-analyzer-output");
89     Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90   }
91   if (!Opts.AnalyzeSpecificFunction.empty()) {
92     Res.push_back("-analyze-function");
93     Res.push_back(Opts.AnalyzeSpecificFunction);
94   }
95   if (Opts.AnalyzeAll)
96     Res.push_back("-analyzer-opt-analyze-headers");
97   if (Opts.AnalyzerDisplayProgress)
98     Res.push_back("-analyzer-display-progress");
99   if (Opts.AnalyzeNestedBlocks)
100     Res.push_back("-analyzer-opt-analyze-nested-blocks");
101   if (Opts.EagerlyAssume)
102     Res.push_back("-analyzer-eagerly-assume");
103   if (!Opts.PurgeDead)
104     Res.push_back("-analyzer-no-purge-dead");
105   if (Opts.TrimGraph)
106     Res.push_back("-trim-egraph");
107   if (Opts.VisualizeEGDot)
108     Res.push_back("-analyzer-viz-egraph-graphviz");
109   if (Opts.VisualizeEGDot)
110     Res.push_back("-analyzer-viz-egraph-ubigraph");
111   if (Opts.EnableExperimentalChecks)
112     Res.push_back("-analyzer-experimental-checks");
113   if (Opts.EnableExperimentalInternalChecks)
114     Res.push_back("-analyzer-experimental-internal-checks");
115 }
116 
117 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                               std::vector<std::string> &Res) {
119   if (Opts.DebugInfo)
120     Res.push_back("-g");
121   if (Opts.DisableLLVMOpts)
122     Res.push_back("-disable-llvm-optzns");
123   if (Opts.DisableRedZone)
124     Res.push_back("-disable-red-zone");
125   if (!Opts.DwarfDebugFlags.empty()) {
126     Res.push_back("-dwarf-debug-flags");
127     Res.push_back(Opts.DwarfDebugFlags);
128   }
129   if (!Opts.MergeAllConstants)
130     Res.push_back("-fno-merge-all-constants");
131   if (Opts.NoCommon)
132     Res.push_back("-fno-common");
133   if (Opts.NoImplicitFloat)
134     Res.push_back("-no-implicit-float");
135   if (Opts.OmitLeafFramePointer)
136     Res.push_back("-momit-leaf-frame-pointer");
137   if (Opts.OptimizeSize) {
138     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
139     Res.push_back("-Os");
140   } else if (Opts.OptimizationLevel != 0)
141     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
142   if (!Opts.MainFileName.empty()) {
143     Res.push_back("-main-file-name");
144     Res.push_back(Opts.MainFileName);
145   }
146   // SimplifyLibCalls is only derived.
147   // TimePasses is only derived.
148   // UnitAtATime is unused.
149   // UnrollLoops is only derived.
150   // Inlining is only derived.
151 
152   if (Opts.DataSections)
153     Res.push_back("-fdata-sections");
154   if (Opts.FunctionSections)
155     Res.push_back("-ffunction-sections");
156   if (Opts.AsmVerbose)
157     Res.push_back("-masm-verbose");
158   if (!Opts.CodeModel.empty()) {
159     Res.push_back("-mcode-model");
160     Res.push_back(Opts.CodeModel);
161   }
162   if (!Opts.CXAAtExit)
163     Res.push_back("-fno-use-cxa-atexit");
164   if (Opts.CXXCtorDtorAliases)
165     Res.push_back("-mconstructor-aliases");
166   if (!Opts.DebugPass.empty()) {
167     Res.push_back("-mdebug-pass");
168     Res.push_back(Opts.DebugPass);
169   }
170   if (Opts.DisableFPElim)
171     Res.push_back("-mdisable-fp-elim");
172   if (!Opts.FloatABI.empty()) {
173     Res.push_back("-mfloat-abi");
174     Res.push_back(Opts.FloatABI);
175   }
176   if (!Opts.LimitFloatPrecision.empty()) {
177     Res.push_back("-mlimit-float-precision");
178     Res.push_back(Opts.LimitFloatPrecision);
179   }
180   if (Opts.NoZeroInitializedInBSS)
181     Res.push_back("-mno-zero-initialized-bss");
182   switch (Opts.getObjCDispatchMethod()) {
183   case CodeGenOptions::Legacy:
184     break;
185   case CodeGenOptions::Mixed:
186     Res.push_back("-fobjc-dispatch-method=mixed");
187     break;
188   case CodeGenOptions::NonLegacy:
189     Res.push_back("-fobjc-dispatch-method=non-legacy");
190     break;
191   }
192   if (Opts.RelaxAll)
193     Res.push_back("-mrelax-all");
194   if (Opts.SoftFloat)
195     Res.push_back("-msoft-float");
196   if (Opts.UnwindTables)
197     Res.push_back("-munwind-tables");
198   if (Opts.RelocationModel != "pic") {
199     Res.push_back("-mrelocation-model");
200     Res.push_back(Opts.RelocationModel);
201   }
202   if (!Opts.VerifyModule)
203     Res.push_back("-disable-llvm-verifier");
204 }
205 
206 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
207                                        std::vector<std::string> &Res) {
208   if (Opts.IncludeSystemHeaders)
209     Res.push_back("-sys-header-deps");
210   if (Opts.UsePhonyTargets)
211     Res.push_back("-MP");
212   if (!Opts.OutputFile.empty()) {
213     Res.push_back("-dependency-file");
214     Res.push_back(Opts.OutputFile);
215   }
216   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
217     Res.push_back("-MT");
218     Res.push_back(Opts.Targets[i]);
219   }
220 }
221 
222 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
223                                  std::vector<std::string> &Res) {
224   if (Opts.IgnoreWarnings)
225     Res.push_back("-w");
226   if (Opts.NoRewriteMacros)
227     Res.push_back("-Wno-rewrite-macros");
228   if (Opts.Pedantic)
229     Res.push_back("-pedantic");
230   if (Opts.PedanticErrors)
231     Res.push_back("-pedantic-errors");
232   if (!Opts.ShowColumn)
233     Res.push_back("-fno-show-column");
234   if (!Opts.ShowLocation)
235     Res.push_back("-fno-show-source-location");
236   if (!Opts.ShowCarets)
237     Res.push_back("-fno-caret-diagnostics");
238   if (!Opts.ShowFixits)
239     Res.push_back("-fno-diagnostics-fixit-info");
240   if (Opts.ShowSourceRanges)
241     Res.push_back("-fdiagnostics-print-source-range-info");
242   if (Opts.ShowColors)
243     Res.push_back("-fcolor-diagnostics");
244   if (Opts.VerifyDiagnostics)
245     Res.push_back("-verify");
246   if (Opts.BinaryOutput)
247     Res.push_back("-fdiagnostics-binary");
248   if (Opts.ShowOptionNames)
249     Res.push_back("-fdiagnostics-show-option");
250   if (Opts.ShowCategories == 1)
251     Res.push_back("-fdiagnostics-show-category=id");
252   else if (Opts.ShowCategories == 2)
253     Res.push_back("-fdiagnostics-show-category=name");
254   if (Opts.ErrorLimit) {
255     Res.push_back("-ferror-limit");
256     Res.push_back(llvm::utostr(Opts.ErrorLimit));
257   }
258   if (Opts.MacroBacktraceLimit
259                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
260     Res.push_back("-fmacro-backtrace-limit");
261     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
262   }
263   if (Opts.TemplateBacktraceLimit
264                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
265     Res.push_back("-ftemplate-backtrace-limit");
266     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
267   }
268 
269   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
270     Res.push_back("-ftabstop");
271     Res.push_back(llvm::utostr(Opts.TabStop));
272   }
273   if (Opts.MessageLength) {
274     Res.push_back("-fmessage-length");
275     Res.push_back(llvm::utostr(Opts.MessageLength));
276   }
277   if (!Opts.DumpBuildInformation.empty()) {
278     Res.push_back("-dump-build-information");
279     Res.push_back(Opts.DumpBuildInformation);
280   }
281   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
282     Res.push_back("-W" + Opts.Warnings[i]);
283 }
284 
285 static const char *getInputKindName(InputKind Kind) {
286   switch (Kind) {
287   case IK_None:              break;
288   case IK_AST:               return "ast";
289   case IK_Asm:               return "assembler-with-cpp";
290   case IK_C:                 return "c";
291   case IK_CXX:               return "c++";
292   case IK_LLVM_IR:           return "ir";
293   case IK_ObjC:              return "objective-c";
294   case IK_ObjCXX:            return "objective-c++";
295   case IK_OpenCL:            return "cl";
296   case IK_PreprocessedC:     return "cpp-output";
297   case IK_PreprocessedCXX:   return "c++-cpp-output";
298   case IK_PreprocessedObjC:  return "objective-c-cpp-output";
299   case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
300   }
301 
302   llvm_unreachable("Unexpected language kind!");
303   return 0;
304 }
305 
306 static const char *getActionName(frontend::ActionKind Kind) {
307   switch (Kind) {
308   case frontend::PluginAction:
309   case frontend::InheritanceView:
310     llvm_unreachable("Invalid kind!");
311 
312   case frontend::ASTDump:                return "-ast-dump";
313   case frontend::ASTPrint:               return "-ast-print";
314   case frontend::ASTPrintXML:            return "-ast-print-xml";
315   case frontend::ASTView:                return "-ast-view";
316   case frontend::BoostCon:               return "-boostcon";
317   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
318   case frontend::DumpTokens:             return "-dump-tokens";
319   case frontend::EmitAssembly:           return "-S";
320   case frontend::EmitBC:                 return "-emit-llvm-bc";
321   case frontend::EmitHTML:               return "-emit-html";
322   case frontend::EmitLLVM:               return "-emit-llvm";
323   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
324   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
325   case frontend::EmitObj:                return "-emit-obj";
326   case frontend::FixIt:                  return "-fixit";
327   case frontend::GeneratePCH:            return "-emit-pch";
328   case frontend::GeneratePTH:            return "-emit-pth";
329   case frontend::InitOnly:               return "-init-only";
330   case frontend::ParseNoop:              return "-parse-noop";
331   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
332   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
333   case frontend::PrintDeclContext:       return "-print-decl-contexts";
334   case frontend::PrintPreprocessedInput: return "-E";
335   case frontend::RewriteMacros:          return "-rewrite-macros";
336   case frontend::RewriteObjC:            return "-rewrite-objc";
337   case frontend::RewriteTest:            return "-rewrite-test";
338   case frontend::RunAnalysis:            return "-analyze";
339   case frontend::RunPreprocessorOnly:    return "-Eonly";
340   }
341 
342   llvm_unreachable("Unexpected language kind!");
343   return 0;
344 }
345 
346 static void FrontendOptsToArgs(const FrontendOptions &Opts,
347                                std::vector<std::string> &Res) {
348   if (!Opts.DebugCodeCompletionPrinter)
349     Res.push_back("-no-code-completion-debug-printer");
350   if (Opts.DisableFree)
351     Res.push_back("-disable-free");
352   if (Opts.RelocatablePCH)
353     Res.push_back("-relocatable-pch");
354   if (Opts.ShowHelp)
355     Res.push_back("-help");
356   if (Opts.ShowMacrosInCodeCompletion)
357     Res.push_back("-code-completion-macros");
358   if (Opts.ShowCodePatternsInCodeCompletion)
359     Res.push_back("-code-completion-patterns");
360   if (Opts.ShowStats)
361     Res.push_back("-print-stats");
362   if (Opts.ShowTimers)
363     Res.push_back("-ftime-report");
364   if (Opts.ShowVersion)
365     Res.push_back("-version");
366 
367   bool NeedLang = false;
368   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
369     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
370         Opts.Inputs[i].first)
371       NeedLang = true;
372   if (NeedLang) {
373     Res.push_back("-x");
374     Res.push_back(getInputKindName(Opts.Inputs[0].first));
375   }
376   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
377     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
378            "Unable to represent this input vector!");
379     Res.push_back(Opts.Inputs[i].second);
380   }
381 
382   if (!Opts.OutputFile.empty()) {
383     Res.push_back("-o");
384     Res.push_back(Opts.OutputFile);
385   }
386   if (!Opts.ViewClassInheritance.empty()) {
387     Res.push_back("-cxx-inheritance-view");
388     Res.push_back(Opts.ViewClassInheritance);
389   }
390   if (!Opts.CodeCompletionAt.FileName.empty()) {
391     Res.push_back("-code-completion-at");
392     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
393                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
394                   llvm::utostr(Opts.CodeCompletionAt.Column));
395   }
396   if (Opts.ProgramAction != frontend::InheritanceView &&
397       Opts.ProgramAction != frontend::PluginAction)
398     Res.push_back(getActionName(Opts.ProgramAction));
399   if (!Opts.ActionName.empty()) {
400     Res.push_back("-plugin");
401     Res.push_back(Opts.ActionName);
402     for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
403       Res.push_back("-plugin-arg-" + Opts.ActionName);
404       Res.push_back(Opts.PluginArgs[i]);
405     }
406   }
407   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
408     Res.push_back("-load");
409     Res.push_back(Opts.Plugins[i]);
410   }
411   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
412     Res.push_back("-ast-merge");
413     Res.push_back(Opts.ASTMergeFiles[i]);
414   }
415   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
416     Res.push_back("-mllvm");
417     Res.push_back(Opts.LLVMArgs[i]);
418   }
419 }
420 
421 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
422                                    std::vector<std::string> &Res) {
423   if (Opts.Sysroot != "/") {
424     Res.push_back("-isysroot");
425     Res.push_back(Opts.Sysroot);
426   }
427 
428   /// User specified include entries.
429   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
430     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
431     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
432       llvm::report_fatal_error("Invalid option set!");
433     if (E.IsUserSupplied) {
434       if (E.Group == frontend::After) {
435         Res.push_back("-idirafter");
436       } else if (E.Group == frontend::Quoted) {
437         Res.push_back("-iquote");
438       } else if (E.Group == frontend::System) {
439         Res.push_back("-isystem");
440       } else {
441         assert(E.Group == frontend::Angled && "Invalid group!");
442         Res.push_back(E.IsFramework ? "-F" : "-I");
443       }
444     } else {
445       if (E.Group != frontend::Angled && E.Group != frontend::System)
446         llvm::report_fatal_error("Invalid option set!");
447       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
448                     "-iwithprefix");
449     }
450     Res.push_back(E.Path);
451   }
452 
453   if (!Opts.EnvIncPath.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.CEnvIncPath.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.ObjCEnvIncPath.empty()) {
462     // FIXME: Provide an option for this, and move env detection to driver.
463     llvm::report_fatal_error("Not yet implemented!");
464   }
465   if (!Opts.CXXEnvIncPath.empty()) {
466     // FIXME: Provide an option for this, and move env detection to driver.
467     llvm::report_fatal_error("Not yet implemented!");
468   }
469   if (!Opts.ObjCXXEnvIncPath.empty()) {
470     // FIXME: Provide an option for this, and move env detection to driver.
471     llvm::report_fatal_error("Not yet implemented!");
472   }
473   if (!Opts.ResourceDir.empty()) {
474     Res.push_back("-resource-dir");
475     Res.push_back(Opts.ResourceDir);
476   }
477   if (!Opts.UseStandardIncludes)
478     Res.push_back("-nostdinc");
479   if (!Opts.UseStandardCXXIncludes)
480     Res.push_back("-nostdinc++");
481   if (Opts.Verbose)
482     Res.push_back("-v");
483 }
484 
485 static void LangOptsToArgs(const LangOptions &Opts,
486                            std::vector<std::string> &Res) {
487   LangOptions DefaultLangOpts;
488 
489   // FIXME: Need to set -std to get all the implicit options.
490 
491   // FIXME: We want to only pass options relative to the defaults, which
492   // requires constructing a target. :(
493   //
494   // It would be better to push the all target specific choices into the driver,
495   // so that everything below that was more uniform.
496 
497   if (Opts.Trigraphs)
498     Res.push_back("-trigraphs");
499   // Implicit based on the input kind:
500   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
501   // Implicit based on the input language standard:
502   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
503   if (Opts.DollarIdents)
504     Res.push_back("-fdollars-in-identifiers");
505   if (Opts.GNUMode && !Opts.GNUKeywords)
506     Res.push_back("-fno-gnu-keywords");
507   if (!Opts.GNUMode && Opts.GNUKeywords)
508     Res.push_back("-fgnu-keywords");
509   if (Opts.Microsoft)
510     Res.push_back("-fms-extensions");
511   if (Opts.ObjCNonFragileABI)
512     Res.push_back("-fobjc-nonfragile-abi");
513   if (Opts.ObjCNonFragileABI2)
514     Res.push_back("-fobjc-nonfragile-abi2");
515   // NoInline is implicit.
516   if (!Opts.CXXOperatorNames)
517     Res.push_back("-fno-operator-names");
518   if (Opts.PascalStrings)
519     Res.push_back("-fpascal-strings");
520   if (Opts.CatchUndefined)
521     Res.push_back("-fcatch-undefined-behavior");
522   if (Opts.WritableStrings)
523     Res.push_back("-fwritable-strings");
524   if (Opts.ConstStrings)
525     Res.push_back("-Wwrite-strings");
526   if (!Opts.LaxVectorConversions)
527     Res.push_back("-fno-lax-vector-conversions");
528   if (Opts.AltiVec)
529     Res.push_back("-faltivec");
530   if (Opts.Exceptions)
531     Res.push_back("-fexceptions");
532   if (Opts.SjLjExceptions)
533     Res.push_back("-fsjlj-exceptions");
534   if (!Opts.RTTI)
535     Res.push_back("-fno-rtti");
536   if (!Opts.NeXTRuntime)
537     Res.push_back("-fgnu-runtime");
538   if (Opts.Freestanding)
539     Res.push_back("-ffreestanding");
540   if (Opts.NoBuiltin)
541     Res.push_back("-fno-builtin");
542   if (!Opts.AssumeSaneOperatorNew)
543     Res.push_back("-fno-assume-sane-operator-new");
544   if (!Opts.ThreadsafeStatics)
545     Res.push_back("-fno-threadsafe-statics");
546   if (Opts.POSIXThreads)
547     Res.push_back("-pthread");
548   if (Opts.Blocks)
549     Res.push_back("-fblocks");
550   if (Opts.EmitAllDecls)
551     Res.push_back("-femit-all-decls");
552   if (Opts.MathErrno)
553     Res.push_back("-fmath-errno");
554   switch (Opts.getSignedOverflowBehavior()) {
555   case LangOptions::SOB_Undefined: break;
556   case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
557   case LangOptions::SOB_Trapping:  Res.push_back("-ftrapv"); break;
558   }
559   if (Opts.HeinousExtensions)
560     Res.push_back("-fheinous-gnu-extensions");
561   // Optimize is implicit.
562   // OptimizeSize is implicit.
563   if (Opts.Static)
564     Res.push_back("-static-define");
565   if (Opts.DumpRecordLayouts)
566     Res.push_back("-fdump-record-layouts");
567   if (Opts.DumpVTableLayouts)
568     Res.push_back("-fdump-vtable-layouts");
569   if (Opts.NoBitFieldTypeAlign)
570     Res.push_back("-fno-bitfield-type-alignment");
571   if (Opts.SjLjExceptions)
572     Res.push_back("-fsjlj-exceptions");
573   if (Opts.PICLevel) {
574     Res.push_back("-pic-level");
575     Res.push_back(llvm::utostr(Opts.PICLevel));
576   }
577   if (Opts.ObjCGCBitmapPrint)
578     Res.push_back("-print-ivar-layout");
579   if (Opts.NoConstantCFStrings)
580     Res.push_back("-fno-constant-cfstrings");
581   if (!Opts.AccessControl)
582     Res.push_back("-fno-access-control");
583   if (!Opts.CharIsSigned)
584     Res.push_back("-fno-signed-char");
585   if (Opts.ShortWChar)
586     Res.push_back("-fshort-wchar");
587   if (!Opts.ElideConstructors)
588     Res.push_back("-fno-elide-constructors");
589   if (Opts.getGCMode() != LangOptions::NonGC) {
590     if (Opts.getGCMode() == LangOptions::HybridGC) {
591       Res.push_back("-fobjc-gc");
592     } else {
593       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
594       Res.push_back("-fobjc-gc-only");
595     }
596   }
597   if (Opts.getVisibilityMode() != LangOptions::Default) {
598     Res.push_back("-fvisibility");
599     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
600       Res.push_back("hidden");
601     } else {
602       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
603              "Invalid visibility!");
604       Res.push_back("protected");
605     }
606   }
607   if (Opts.InlineVisibilityHidden)
608     Res.push_back("-fvisibility-inlines-hidden");
609 
610   if (Opts.getStackProtectorMode() != 0) {
611     Res.push_back("-stack-protector");
612     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
613   }
614   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
615     Res.push_back("-ftemplate-depth");
616     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
617   }
618   if (!Opts.ObjCConstantStringClass.empty()) {
619     Res.push_back("-fconstant-string-class");
620     Res.push_back(Opts.ObjCConstantStringClass);
621   }
622 }
623 
624 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
625                                    std::vector<std::string> &Res) {
626   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
627     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
628                   Opts.Macros[i].first);
629   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
630     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
631     Res.push_back("-include");
632     Res.push_back(Opts.Includes[i]);
633   }
634   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
635     Res.push_back("-imacros");
636     Res.push_back(Opts.MacroIncludes[i]);
637   }
638   if (!Opts.UsePredefines)
639     Res.push_back("-undef");
640   if (Opts.DetailedRecord)
641     Res.push_back("-detailed-preprocessing-record");
642   if (!Opts.ImplicitPCHInclude.empty()) {
643     Res.push_back("-include-pch");
644     Res.push_back(Opts.ImplicitPCHInclude);
645   }
646   if (!Opts.ImplicitPTHInclude.empty()) {
647     Res.push_back("-include-pth");
648     Res.push_back(Opts.ImplicitPTHInclude);
649   }
650   if (!Opts.TokenCache.empty()) {
651     if (Opts.ImplicitPTHInclude.empty()) {
652       Res.push_back("-token-cache");
653       Res.push_back(Opts.TokenCache);
654     } else
655       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
656              "Unsupported option combination!");
657   }
658   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
659     Res.push_back("-remap-file");
660     Res.push_back(Opts.RemappedFiles[i].first + ";" +
661                   Opts.RemappedFiles[i].second);
662   }
663 }
664 
665 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
666                                          std::vector<std::string> &Res) {
667   if (!Opts.ShowCPP && !Opts.ShowMacros)
668     llvm::report_fatal_error("Invalid option combination!");
669 
670   if (Opts.ShowCPP && Opts.ShowMacros)
671     Res.push_back("-dD");
672   else if (!Opts.ShowCPP && Opts.ShowMacros)
673     Res.push_back("-dM");
674 
675   if (!Opts.ShowLineMarkers)
676     Res.push_back("-P");
677   if (Opts.ShowComments)
678     Res.push_back("-C");
679   if (Opts.ShowMacroComments)
680     Res.push_back("-CC");
681 }
682 
683 static void TargetOptsToArgs(const TargetOptions &Opts,
684                              std::vector<std::string> &Res) {
685   Res.push_back("-triple");
686   Res.push_back(Opts.Triple);
687   if (!Opts.CPU.empty()) {
688     Res.push_back("-target-cpu");
689     Res.push_back(Opts.CPU);
690   }
691   if (!Opts.ABI.empty()) {
692     Res.push_back("-target-abi");
693     Res.push_back(Opts.ABI);
694   }
695   Res.push_back("-cxx-abi");
696   Res.push_back(Opts.CXXABI);
697   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
698     Res.push_back("-target-feature");
699     Res.push_back(Opts.Features[i]);
700   }
701 }
702 
703 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
704   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
705   CodeGenOptsToArgs(getCodeGenOpts(), Res);
706   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
707   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
708   FrontendOptsToArgs(getFrontendOpts(), Res);
709   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
710   LangOptsToArgs(getLangOpts(), Res);
711   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
712   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
713   TargetOptsToArgs(getTargetOpts(), Res);
714 }
715 
716 //===----------------------------------------------------------------------===//
717 // Deserialization (to args)
718 //===----------------------------------------------------------------------===//
719 
720 using namespace clang::driver;
721 using namespace clang::driver::cc1options;
722 
723 //
724 
725 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
726                               Diagnostic &Diags) {
727   using namespace cc1options;
728 
729   Opts.AnalysisList.clear();
730 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
731   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
732 #include "clang/Frontend/Analyses.def"
733 
734   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
735     llvm::StringRef Name = A->getValue(Args);
736     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
737 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
738       .Case(CMDFLAG, NAME##Model)
739 #include "clang/Frontend/Analyses.def"
740       .Default(NumStores);
741     // FIXME: Error handling.
742     if (Value == NumStores)
743       Diags.Report(diag::err_drv_invalid_value)
744         << A->getAsString(Args) << Name;
745     else
746       Opts.AnalysisStoreOpt = Value;
747   }
748 
749   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
750     llvm::StringRef Name = A->getValue(Args);
751     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
752 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
753       .Case(CMDFLAG, NAME##Model)
754 #include "clang/Frontend/Analyses.def"
755       .Default(NumConstraints);
756     // FIXME: Error handling.
757     if (Value == NumConstraints)
758       Diags.Report(diag::err_drv_invalid_value)
759         << A->getAsString(Args) << Name;
760     else
761       Opts.AnalysisConstraintsOpt = Value;
762   }
763 
764   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
765     llvm::StringRef Name = A->getValue(Args);
766     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
767 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
768       .Case(CMDFLAG, PD_##NAME)
769 #include "clang/Frontend/Analyses.def"
770       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
771     // FIXME: Error handling.
772     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
773       Diags.Report(diag::err_drv_invalid_value)
774         << A->getAsString(Args) << Name;
775     else
776       Opts.AnalysisDiagOpt = Value;
777   }
778 
779   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
780   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
781   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
782   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
783   Opts.AnalyzeNestedBlocks =
784     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
785   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
786   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
787   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
788   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
789   Opts.EnableExperimentalInternalChecks =
790     Args.hasArg(OPT_analyzer_experimental_internal_checks);
791   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
792   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
793   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
794   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
795 }
796 
797 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
798                              Diagnostic &Diags) {
799   using namespace cc1options;
800   // -Os implies -O2
801   if (Args.hasArg(OPT_Os))
802     Opts.OptimizationLevel = 2;
803   else {
804     Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
805     if (Opts.OptimizationLevel > 3) {
806       Diags.Report(diag::err_drv_invalid_value)
807         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
808       Opts.OptimizationLevel = 3;
809     }
810   }
811 
812   // We must always run at least the always inlining pass.
813   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
814     : CodeGenOptions::OnlyAlwaysInlining;
815 
816   Opts.DebugInfo = Args.hasArg(OPT_g);
817   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
818   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
819   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
820   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
821   Opts.NoCommon = Args.hasArg(OPT_fno_common);
822   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
823   Opts.OptimizeSize = Args.hasArg(OPT_Os);
824   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
825                             Args.hasArg(OPT_ffreestanding));
826   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
827 
828   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
829   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
830   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
831   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
832   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
833   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
834   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
835   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
836   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
837   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
838   Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
839   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
840   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
841   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
842 
843   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
844   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
845 
846   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
847   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
848 
849   Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
850 
851   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
852     llvm::StringRef Name = A->getValue(Args);
853     unsigned Method = llvm::StringSwitch<unsigned>(Name)
854       .Case("legacy", CodeGenOptions::Legacy)
855       .Case("non-legacy", CodeGenOptions::NonLegacy)
856       .Case("mixed", CodeGenOptions::Mixed)
857       .Default(~0U);
858     if (Method == ~0U)
859       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
860     else
861       Opts.ObjCDispatchMethod = Method;
862   }
863 }
864 
865 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
866                                       ArgList &Args) {
867   using namespace cc1options;
868   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
869   Opts.Targets = Args.getAllArgValues(OPT_MT);
870   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
871   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
872 }
873 
874 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
875                                 Diagnostic &Diags) {
876   using namespace cc1options;
877   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
878   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
879   Opts.Pedantic = Args.hasArg(OPT_pedantic);
880   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
881   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
882   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
883   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
884   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
885   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
886   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
887 
888   llvm::StringRef ShowOverloads =
889     Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
890   if (ShowOverloads == "best")
891     Opts.ShowOverloads = Diagnostic::Ovl_Best;
892   else if (ShowOverloads == "all")
893     Opts.ShowOverloads = Diagnostic::Ovl_All;
894   else
895     Diags.Report(diag::err_drv_invalid_value)
896       << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
897       << ShowOverloads;
898 
899   llvm::StringRef ShowCategory =
900     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
901   if (ShowCategory == "none")
902     Opts.ShowCategories = 0;
903   else if (ShowCategory == "id")
904     Opts.ShowCategories = 1;
905   else if (ShowCategory == "name")
906     Opts.ShowCategories = 2;
907   else
908     Diags.Report(diag::err_drv_invalid_value)
909       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
910       << ShowCategory;
911 
912   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
913   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
914   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
915   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
916   Opts.MacroBacktraceLimit
917     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
918                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
919   Opts.TemplateBacktraceLimit
920     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
921                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
922                          Diags);
923   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
924                                     DiagnosticOptions::DefaultTabStop, Diags);
925   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
926     Diags.Report(diag::warn_ignoring_ftabstop_value)
927       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
928     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
929   }
930   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
931   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
932   Opts.Warnings = Args.getAllArgValues(OPT_W);
933 }
934 
935 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
936                                    Diagnostic &Diags) {
937   using namespace cc1options;
938   Opts.ProgramAction = frontend::ParseSyntaxOnly;
939   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
940     switch (A->getOption().getID()) {
941     default:
942       assert(0 && "Invalid option in group!");
943     case OPT_ast_dump:
944       Opts.ProgramAction = frontend::ASTDump; break;
945     case OPT_ast_print:
946       Opts.ProgramAction = frontend::ASTPrint; break;
947     case OPT_ast_print_xml:
948       Opts.ProgramAction = frontend::ASTPrintXML; break;
949     case OPT_ast_view:
950       Opts.ProgramAction = frontend::ASTView; break;
951     case OPT_boostcon:
952       Opts.ProgramAction = frontend::BoostCon; break;
953     case OPT_dump_raw_tokens:
954       Opts.ProgramAction = frontend::DumpRawTokens; break;
955     case OPT_dump_tokens:
956       Opts.ProgramAction = frontend::DumpTokens; break;
957     case OPT_S:
958       Opts.ProgramAction = frontend::EmitAssembly; break;
959     case OPT_emit_llvm_bc:
960       Opts.ProgramAction = frontend::EmitBC; break;
961     case OPT_emit_html:
962       Opts.ProgramAction = frontend::EmitHTML; break;
963     case OPT_emit_llvm:
964       Opts.ProgramAction = frontend::EmitLLVM; break;
965     case OPT_emit_llvm_only:
966       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
967     case OPT_emit_codegen_only:
968       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
969     case OPT_emit_obj:
970       Opts.ProgramAction = frontend::EmitObj; break;
971     case OPT_fixit_EQ:
972       Opts.FixItSuffix = A->getValue(Args);
973       // fall-through!
974     case OPT_fixit:
975       Opts.ProgramAction = frontend::FixIt; break;
976     case OPT_emit_pch:
977       Opts.ProgramAction = frontend::GeneratePCH; break;
978     case OPT_emit_pth:
979       Opts.ProgramAction = frontend::GeneratePTH; break;
980     case OPT_init_only:
981       Opts.ProgramAction = frontend::InitOnly; break;
982     case OPT_parse_noop:
983       Opts.ProgramAction = frontend::ParseNoop; break;
984     case OPT_parse_print_callbacks:
985       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
986     case OPT_fsyntax_only:
987       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
988     case OPT_print_decl_contexts:
989       Opts.ProgramAction = frontend::PrintDeclContext; break;
990     case OPT_E:
991       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
992     case OPT_rewrite_macros:
993       Opts.ProgramAction = frontend::RewriteMacros; break;
994     case OPT_rewrite_objc:
995       Opts.ProgramAction = frontend::RewriteObjC; break;
996     case OPT_rewrite_test:
997       Opts.ProgramAction = frontend::RewriteTest; break;
998     case OPT_analyze:
999       Opts.ProgramAction = frontend::RunAnalysis; break;
1000     case OPT_Eonly:
1001       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1002     }
1003   }
1004 
1005   if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1006     Opts.Plugins.push_back(A->getValue(Args,0));
1007     Opts.ProgramAction = frontend::PluginAction;
1008     Opts.ActionName = A->getValue(Args);
1009 
1010     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1011            end = Args.filtered_end(); it != end; ++it) {
1012       if ((*it)->getValue(Args, 0) == Opts.ActionName)
1013         Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1014     }
1015   }
1016 
1017   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1018     Opts.CodeCompletionAt =
1019       ParsedSourceLocation::FromString(A->getValue(Args));
1020     if (Opts.CodeCompletionAt.FileName.empty())
1021       Diags.Report(diag::err_drv_invalid_value)
1022         << A->getAsString(Args) << A->getValue(Args);
1023   }
1024   Opts.DebugCodeCompletionPrinter =
1025     !Args.hasArg(OPT_no_code_completion_debug_printer);
1026   Opts.DisableFree = Args.hasArg(OPT_disable_free);
1027 
1028   Opts.OutputFile = Args.getLastArgValue(OPT_o);
1029   Opts.Plugins = Args.getAllArgValues(OPT_load);
1030   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1031   Opts.ShowHelp = Args.hasArg(OPT_help);
1032   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1033   Opts.ShowCodePatternsInCodeCompletion
1034     = Args.hasArg(OPT_code_completion_patterns);
1035   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1036   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1037   Opts.ShowVersion = Args.hasArg(OPT_version);
1038   Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1039   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1040   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1041 
1042   InputKind DashX = IK_None;
1043   if (const Arg *A = Args.getLastArg(OPT_x)) {
1044     DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1045       .Case("c", IK_C)
1046       .Case("cl", IK_OpenCL)
1047       .Case("c", IK_C)
1048       .Case("cl", IK_OpenCL)
1049       .Case("c++", IK_CXX)
1050       .Case("objective-c", IK_ObjC)
1051       .Case("objective-c++", IK_ObjCXX)
1052       .Case("cpp-output", IK_PreprocessedC)
1053       .Case("assembler-with-cpp", IK_Asm)
1054       .Case("c++-cpp-output", IK_PreprocessedCXX)
1055       .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1056       .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1057       .Case("c-header", IK_C)
1058       .Case("objective-c-header", IK_ObjC)
1059       .Case("c++-header", IK_CXX)
1060       .Case("objective-c++-header", IK_ObjCXX)
1061       .Case("ast", IK_AST)
1062       .Case("ir", IK_LLVM_IR)
1063       .Default(IK_None);
1064     if (DashX == IK_None)
1065       Diags.Report(diag::err_drv_invalid_value)
1066         << A->getAsString(Args) << A->getValue(Args);
1067   }
1068 
1069   // '-' is the default input if none is given.
1070   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1071   Opts.Inputs.clear();
1072   if (Inputs.empty())
1073     Inputs.push_back("-");
1074   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1075     InputKind IK = DashX;
1076     if (IK == IK_None) {
1077       IK = FrontendOptions::getInputKindForExtension(
1078         llvm::StringRef(Inputs[i]).rsplit('.').second);
1079       // FIXME: Remove this hack.
1080       if (i == 0)
1081         DashX = IK;
1082     }
1083     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1084   }
1085 
1086   return DashX;
1087 }
1088 
1089 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1090                                                  void *MainAddr) {
1091   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1092 
1093   if (!P.isEmpty()) {
1094     P.eraseComponent();  // Remove /clang from foo/bin/clang
1095     P.eraseComponent();  // Remove /bin   from foo/bin
1096 
1097     // Get foo/lib/clang/<version>/include
1098     P.appendComponent("lib");
1099     P.appendComponent("clang");
1100     P.appendComponent(CLANG_VERSION_STRING);
1101   }
1102 
1103   return P.str();
1104 }
1105 
1106 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1107   using namespace cc1options;
1108   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1109   Opts.Verbose = Args.hasArg(OPT_v);
1110   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1111   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1112   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1113   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1114 
1115   // Add -I... and -F... options in order.
1116   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1117          ie = Args.filtered_end(); it != ie; ++it)
1118     Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1119                  /*IsFramework=*/ (*it)->getOption().matches(OPT_F));
1120 
1121   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1122   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1123   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1124                                              OPT_iwithprefixbefore),
1125          ie = Args.filtered_end(); it != ie; ++it) {
1126     const Arg *A = *it;
1127     if (A->getOption().matches(OPT_iprefix))
1128       Prefix = A->getValue(Args);
1129     else if (A->getOption().matches(OPT_iwithprefix))
1130       Opts.AddPath(Prefix.str() + A->getValue(Args),
1131                    frontend::System, false, false);
1132     else
1133       Opts.AddPath(Prefix.str() + A->getValue(Args),
1134                    frontend::Angled, false, false);
1135   }
1136 
1137   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1138          ie = Args.filtered_end(); it != ie; ++it)
1139     Opts.AddPath((*it)->getValue(Args), frontend::After, true, false);
1140   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1141          ie = Args.filtered_end(); it != ie; ++it)
1142     Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false);
1143   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1144          ie = Args.filtered_end(); it != ie; ++it)
1145     Opts.AddPath((*it)->getValue(Args), frontend::System, true, false);
1146 
1147   // FIXME: Need options for the various environment variables!
1148 }
1149 
1150 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1151                           Diagnostic &Diags) {
1152   // FIXME: Cleanup per-file based stuff.
1153 
1154   // Set some properties which depend soley on the input kind; it would be nice
1155   // to move these to the language standard, and have the driver resolve the
1156   // input kind + language standard.
1157   if (IK == IK_Asm) {
1158     Opts.AsmPreprocessor = 1;
1159   } else if (IK == IK_ObjC ||
1160              IK == IK_ObjCXX ||
1161              IK == IK_PreprocessedObjC ||
1162              IK == IK_PreprocessedObjCXX) {
1163     Opts.ObjC1 = Opts.ObjC2 = 1;
1164   }
1165 
1166   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1167   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1168     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1169 #define LANGSTANDARD(id, name, desc, features) \
1170       .Case(name, LangStandard::lang_##id)
1171 #include "clang/Frontend/LangStandards.def"
1172       .Default(LangStandard::lang_unspecified);
1173     if (LangStd == LangStandard::lang_unspecified)
1174       Diags.Report(diag::err_drv_invalid_value)
1175         << A->getAsString(Args) << A->getValue(Args);
1176   }
1177 
1178   if (LangStd == LangStandard::lang_unspecified) {
1179     // Based on the base language, pick one.
1180     switch (IK) {
1181     case IK_None:
1182     case IK_AST:
1183     case IK_LLVM_IR:
1184       assert(0 && "Invalid input kind!");
1185     case IK_OpenCL:
1186       LangStd = LangStandard::lang_opencl;
1187       break;
1188     case IK_Asm:
1189     case IK_C:
1190     case IK_PreprocessedC:
1191     case IK_ObjC:
1192     case IK_PreprocessedObjC:
1193       LangStd = LangStandard::lang_gnu99;
1194       break;
1195     case IK_CXX:
1196     case IK_PreprocessedCXX:
1197     case IK_ObjCXX:
1198     case IK_PreprocessedObjCXX:
1199       LangStd = LangStandard::lang_gnucxx98;
1200       break;
1201     }
1202   }
1203 
1204   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1205   Opts.BCPLComment = Std.hasBCPLComments();
1206   Opts.C99 = Std.isC99();
1207   Opts.CPlusPlus = Std.isCPlusPlus();
1208   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1209   Opts.Digraphs = Std.hasDigraphs();
1210   Opts.GNUMode = Std.isGNUMode();
1211   Opts.GNUInline = !Std.isC99();
1212   Opts.HexFloats = Std.hasHexFloats();
1213   Opts.ImplicitInt = Std.hasImplicitInt();
1214 
1215   // OpenCL has some additional defaults.
1216   if (LangStd == LangStandard::lang_opencl) {
1217     Opts.OpenCL = 1;
1218     Opts.AltiVec = 1;
1219     Opts.CXXOperatorNames = 1;
1220     Opts.LaxVectorConversions = 1;
1221   }
1222 
1223   // OpenCL and C++ both have bool, true, false keywords.
1224   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1225 
1226   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1227   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1228   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1229   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1230   // name, as it doesn't seem a useful distinction.
1231   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1232                                   Opts.GNUMode);
1233 
1234   if (Opts.CPlusPlus)
1235     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1236 
1237   if (Args.hasArg(OPT_fobjc_gc_only))
1238     Opts.setGCMode(LangOptions::GCOnly);
1239   else if (Args.hasArg(OPT_fobjc_gc))
1240     Opts.setGCMode(LangOptions::HybridGC);
1241 
1242   if (Args.hasArg(OPT_print_ivar_layout))
1243     Opts.ObjCGCBitmapPrint = 1;
1244   if (Args.hasArg(OPT_fno_constant_cfstrings))
1245     Opts.NoConstantCFStrings = 1;
1246 
1247   if (Args.hasArg(OPT_faltivec))
1248     Opts.AltiVec = 1;
1249 
1250   if (Args.hasArg(OPT_pthread))
1251     Opts.POSIXThreads = 1;
1252 
1253   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1254   if (Vis == "default")
1255     Opts.setVisibilityMode(LangOptions::Default);
1256   else if (Vis == "hidden")
1257     Opts.setVisibilityMode(LangOptions::Hidden);
1258   else if (Vis == "protected")
1259     Opts.setVisibilityMode(LangOptions::Protected);
1260   else
1261     Diags.Report(diag::err_drv_invalid_value)
1262       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1263 
1264   if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1265     Opts.InlineVisibilityHidden = 1;
1266 
1267   if (Args.hasArg(OPT_ftrapv))
1268     Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1269   else if (Args.hasArg(OPT_fwrapv))
1270     Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1271 
1272   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1273   // is specified, or -std is set to a conforming mode.
1274   Opts.Trigraphs = !Opts.GNUMode;
1275   if (Args.hasArg(OPT_trigraphs))
1276     Opts.Trigraphs = 1;
1277 
1278   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1279                                    OPT_fno_dollars_in_identifiers,
1280                                    !Opts.AsmPreprocessor);
1281   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1282   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1283   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1284   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1285   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1286     Opts.LaxVectorConversions = 0;
1287   if (Args.hasArg(OPT_fno_threadsafe_statics))
1288     Opts.ThreadsafeStatics = 0;
1289   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1290   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1291   Opts.Blocks = Args.hasArg(OPT_fblocks);
1292   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1293   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1294   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1295   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1296   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1297   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1298   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1299   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1300   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1301   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1302                                                Diags);
1303   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1304   Opts.ObjCConstantStringClass =
1305     Args.getLastArgValue(OPT_fconstant_string_class);
1306   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1307   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1308   if (Opts.ObjCNonFragileABI2)
1309     Opts.ObjCNonFragileABI = true;
1310   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1311   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1312   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1313   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1314   Opts.Static = Args.hasArg(OPT_static_define);
1315   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1316   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1317   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1318   Opts.OptimizeSize = 0;
1319 
1320   // FIXME: Eliminate this dependency.
1321   unsigned Opt =
1322     Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1323   Opts.Optimize = Opt != 0;
1324 
1325   // This is the __NO_INLINE__ define, which just depends on things like the
1326   // optimization level and -fno-inline, not actually whether the backend has
1327   // inlining enabled.
1328   //
1329   // FIXME: This is affected by other options (-fno-inline).
1330   Opts.NoInline = !Opt;
1331 
1332   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1333   switch (SSP) {
1334   default:
1335     Diags.Report(diag::err_drv_invalid_value)
1336       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1337     break;
1338   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1339   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1340   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1341   }
1342 }
1343 
1344 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1345                                   Diagnostic &Diags) {
1346   using namespace cc1options;
1347   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1348   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1349   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1350       Opts.TokenCache = A->getValue(Args);
1351   else
1352     Opts.TokenCache = Opts.ImplicitPTHInclude;
1353   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1354   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1355   // Add macros from the command line.
1356   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1357          ie = Args.filtered_end(); it != ie; ++it) {
1358     if ((*it)->getOption().matches(OPT_D))
1359       Opts.addMacroDef((*it)->getValue(Args));
1360     else
1361       Opts.addMacroUndef((*it)->getValue(Args));
1362   }
1363 
1364   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1365 
1366   // Add the ordered list of -includes.
1367   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1368                                              OPT_include_pth),
1369          ie = Args.filtered_end(); it != ie; ++it) {
1370     const Arg *A = *it;
1371     // PCH is handled specially, we need to extra the original include path.
1372     if (A->getOption().matches(OPT_include_pch)) {
1373       std::string OriginalFile =
1374         PCHReader::getOriginalSourceFile(A->getValue(Args), Diags);
1375       if (OriginalFile.empty())
1376         continue;
1377 
1378       Opts.Includes.push_back(OriginalFile);
1379     } else
1380       Opts.Includes.push_back(A->getValue(Args));
1381   }
1382 
1383   // Include 'altivec.h' if -faltivec option present
1384   if (Args.hasArg(OPT_faltivec))
1385     Opts.Includes.push_back("altivec.h");
1386 
1387   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1388          ie = Args.filtered_end(); it != ie; ++it) {
1389     const Arg *A = *it;
1390     std::pair<llvm::StringRef,llvm::StringRef> Split =
1391       llvm::StringRef(A->getValue(Args)).split(';');
1392 
1393     if (Split.second.empty()) {
1394       Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1395       continue;
1396     }
1397 
1398     Opts.addRemappedFile(Split.first, Split.second);
1399   }
1400 }
1401 
1402 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1403                                         ArgList &Args) {
1404   using namespace cc1options;
1405   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1406   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1407   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1408   Opts.ShowComments = Args.hasArg(OPT_C);
1409   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1410 }
1411 
1412 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1413   using namespace cc1options;
1414   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1415   Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1416   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1417   Opts.Triple = Args.getLastArgValue(OPT_triple);
1418   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1419 
1420   // Use the host triple if unspecified.
1421   if (Opts.Triple.empty())
1422     Opts.Triple = llvm::sys::getHostTriple();
1423 
1424   // Use the Itanium C++ ABI if unspecified.
1425   if (Opts.CXXABI.empty())
1426     Opts.CXXABI = "itanium";
1427 }
1428 
1429 //
1430 
1431 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1432                                         const char **ArgBegin,
1433                                         const char **ArgEnd,
1434                                         Diagnostic &Diags) {
1435   // Parse the arguments.
1436   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1437   unsigned MissingArgIndex, MissingArgCount;
1438   llvm::OwningPtr<InputArgList> Args(
1439     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1440 
1441   // Check for missing argument error.
1442   if (MissingArgCount)
1443     Diags.Report(diag::err_drv_missing_argument)
1444       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1445 
1446   // Issue errors on unknown arguments.
1447   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1448          ie = Args->filtered_end(); it != ie; ++it)
1449     Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1450 
1451   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1452   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1453   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1454   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1455   InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1456   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1457   if (DashX != IK_AST && DashX != IK_LLVM_IR)
1458     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1459   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1460   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1461   ParseTargetArgs(Res.getTargetOpts(), *Args);
1462 }
1463