xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision cd121fb0137d628527f40d8e980bc61b81119f66) 
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.ErrorLimit) {
247     Res.push_back("-ferror-limit");
248     Res.push_back(llvm::utostr(Opts.ErrorLimit));
249   }
250   if (Opts.MacroBacktraceLimit
251                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
252     Res.push_back("-fmacro-backtrace-limit");
253     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
254   }
255   if (Opts.TemplateBacktraceLimit
256                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
257     Res.push_back("-ftemplate-backtrace-limit");
258     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
259   }
260 
261   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
262     Res.push_back("-ftabstop");
263     Res.push_back(llvm::utostr(Opts.TabStop));
264   }
265   if (Opts.MessageLength) {
266     Res.push_back("-fmessage-length");
267     Res.push_back(llvm::utostr(Opts.MessageLength));
268   }
269   if (!Opts.DumpBuildInformation.empty()) {
270     Res.push_back("-dump-build-information");
271     Res.push_back(Opts.DumpBuildInformation);
272   }
273   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
274     Res.push_back("-W" + Opts.Warnings[i]);
275 }
276 
277 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
278   switch (Kind) {
279   case FrontendOptions::IK_None:              break;
280   case FrontendOptions::IK_AST:               return "ast";
281   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
282   case FrontendOptions::IK_C:                 return "c";
283   case FrontendOptions::IK_CXX:               return "c++";
284   case FrontendOptions::IK_ObjC:              return "objective-c";
285   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
286   case FrontendOptions::IK_OpenCL:            return "cl";
287   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
288   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
289   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
290   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
291   }
292 
293   llvm_unreachable("Unexpected language kind!");
294   return 0;
295 }
296 
297 static const char *getActionName(frontend::ActionKind Kind) {
298   switch (Kind) {
299   case frontend::PluginAction:
300   case frontend::InheritanceView:
301     llvm_unreachable("Invalid kind!");
302 
303   case frontend::ASTDump:                return "-ast-dump";
304   case frontend::ASTPrint:               return "-ast-print";
305   case frontend::ASTPrintXML:            return "-ast-print-xml";
306   case frontend::ASTView:                return "-ast-view";
307   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
308   case frontend::DumpTokens:             return "-dump-tokens";
309   case frontend::EmitAssembly:           return "-S";
310   case frontend::EmitBC:                 return "-emit-llvm-bc";
311   case frontend::EmitHTML:               return "-emit-html";
312   case frontend::EmitLLVM:               return "-emit-llvm";
313   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
314   case frontend::EmitObj:                return "-emit-obj";
315   case frontend::FixIt:                  return "-fixit";
316   case frontend::GeneratePCH:            return "-emit-pch";
317   case frontend::GeneratePTH:            return "-emit-pth";
318   case frontend::InitOnly:               return "-init-only";
319   case frontend::ParseNoop:              return "-parse-noop";
320   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
321   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
322   case frontend::PrintDeclContext:       return "-print-decl-contexts";
323   case frontend::PrintPreprocessedInput: return "-E";
324   case frontend::RewriteMacros:          return "-rewrite-macros";
325   case frontend::RewriteObjC:            return "-rewrite-objc";
326   case frontend::RewriteTest:            return "-rewrite-test";
327   case frontend::RunAnalysis:            return "-analyze";
328   case frontend::RunPreprocessorOnly:    return "-Eonly";
329   }
330 
331   llvm_unreachable("Unexpected language kind!");
332   return 0;
333 }
334 
335 static void FrontendOptsToArgs(const FrontendOptions &Opts,
336                                std::vector<std::string> &Res) {
337   if (!Opts.DebugCodeCompletionPrinter)
338     Res.push_back("-no-code-completion-debug-printer");
339   if (Opts.DisableFree)
340     Res.push_back("-disable-free");
341   if (Opts.RelocatablePCH)
342     Res.push_back("-relocatable-pch");
343   if (Opts.ShowHelp)
344     Res.push_back("-help");
345   if (Opts.ShowMacrosInCodeCompletion)
346     Res.push_back("-code-completion-macros");
347   if (Opts.ShowStats)
348     Res.push_back("-print-stats");
349   if (Opts.ShowTimers)
350     Res.push_back("-ftime-report");
351   if (Opts.ShowVersion)
352     Res.push_back("-version");
353 
354   bool NeedLang = false;
355   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
356     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
357         Opts.Inputs[i].first)
358       NeedLang = true;
359   if (NeedLang) {
360     Res.push_back("-x");
361     Res.push_back(getInputKindName(Opts.Inputs[0].first));
362   }
363   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
364     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
365            "Unable to represent this input vector!");
366     Res.push_back(Opts.Inputs[i].second);
367   }
368 
369   if (!Opts.OutputFile.empty()) {
370     Res.push_back("-o");
371     Res.push_back(Opts.OutputFile);
372   }
373   if (!Opts.ViewClassInheritance.empty()) {
374     Res.push_back("-cxx-inheritance-view");
375     Res.push_back(Opts.ViewClassInheritance);
376   }
377   if (!Opts.CodeCompletionAt.FileName.empty()) {
378     Res.push_back("-code-completion-at");
379     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
380                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
381                   llvm::utostr(Opts.CodeCompletionAt.Column));
382   }
383   if (Opts.ProgramAction != frontend::InheritanceView &&
384       Opts.ProgramAction != frontend::PluginAction)
385     Res.push_back(getActionName(Opts.ProgramAction));
386   if (!Opts.ActionName.empty()) {
387     Res.push_back("-plugin");
388     Res.push_back(Opts.ActionName);
389   }
390   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
391     Res.push_back("-load");
392     Res.push_back(Opts.Plugins[i]);
393   }
394   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
395     Res.push_back("-ast-merge");
396     Res.push_back(Opts.ASTMergeFiles[i]);
397   }
398   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
399     Res.push_back("-mllvm");
400     Res.push_back(Opts.LLVMArgs[i]);
401   }
402 }
403 
404 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
405                                    std::vector<std::string> &Res) {
406   if (Opts.Sysroot != "/") {
407     Res.push_back("-isysroot");
408     Res.push_back(Opts.Sysroot);
409   }
410 
411   /// User specified include entries.
412   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
413     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
414     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
415       llvm::report_fatal_error("Invalid option set!");
416     if (E.IsUserSupplied) {
417       if (E.Group == frontend::After) {
418         Res.push_back("-idirafter");
419       } else if (E.Group == frontend::Quoted) {
420         Res.push_back("-iquote");
421       } else if (E.Group == frontend::System) {
422         Res.push_back("-isystem");
423       } else {
424         assert(E.Group == frontend::Angled && "Invalid group!");
425         Res.push_back(E.IsFramework ? "-F" : "-I");
426       }
427     } else {
428       if (E.Group != frontend::Angled && E.Group != frontend::System)
429         llvm::report_fatal_error("Invalid option set!");
430       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
431                     "-iwithprefix");
432     }
433     Res.push_back(E.Path);
434   }
435 
436   if (!Opts.EnvIncPath.empty()) {
437     // FIXME: Provide an option for this, and move env detection to driver.
438     llvm::report_fatal_error("Not yet implemented!");
439   }
440   if (!Opts.CEnvIncPath.empty()) {
441     // FIXME: Provide an option for this, and move env detection to driver.
442     llvm::report_fatal_error("Not yet implemented!");
443   }
444   if (!Opts.ObjCEnvIncPath.empty()) {
445     // FIXME: Provide an option for this, and move env detection to driver.
446     llvm::report_fatal_error("Not yet implemented!");
447   }
448   if (!Opts.CXXEnvIncPath.empty()) {
449     // FIXME: Provide an option for this, and move env detection to driver.
450     llvm::report_fatal_error("Not yet implemented!");
451   }
452   if (!Opts.ObjCXXEnvIncPath.empty()) {
453     // FIXME: Provide an option for this, and move env detection to driver.
454     llvm::report_fatal_error("Not yet implemented!");
455   }
456   if (!Opts.ResourceDir.empty()) {
457     Res.push_back("-resource-dir");
458     Res.push_back(Opts.ResourceDir);
459   }
460   if (!Opts.UseStandardIncludes)
461     Res.push_back("-nostdinc");
462   if (!Opts.UseStandardCXXIncludes)
463     Res.push_back("-nostdinc++");
464   if (Opts.Verbose)
465     Res.push_back("-v");
466 }
467 
468 static void LangOptsToArgs(const LangOptions &Opts,
469                            std::vector<std::string> &Res) {
470   LangOptions DefaultLangOpts;
471 
472   // FIXME: Need to set -std to get all the implicit options.
473 
474   // FIXME: We want to only pass options relative to the defaults, which
475   // requires constructing a target. :(
476   //
477   // It would be better to push the all target specific choices into the driver,
478   // so that everything below that was more uniform.
479 
480   if (Opts.Trigraphs)
481     Res.push_back("-trigraphs");
482   // Implicit based on the input kind:
483   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
484   // Implicit based on the input language standard:
485   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
486   if (Opts.DollarIdents)
487     Res.push_back("-fdollars-in-identifiers");
488   if (Opts.GNUMode && !Opts.GNUKeywords)
489     Res.push_back("-fno-gnu-keywords");
490   if (!Opts.GNUMode && Opts.GNUKeywords)
491     Res.push_back("-fgnu-keywords");
492   if (Opts.Microsoft)
493     Res.push_back("-fms-extensions");
494   if (Opts.ObjCNonFragileABI)
495     Res.push_back("-fobjc-nonfragile-abi");
496   if (Opts.ObjCNonFragileABI2)
497     Res.push_back("-fobjc-nonfragile-abi2");
498   // NoInline is implicit.
499   if (!Opts.CXXOperatorNames)
500     Res.push_back("-fno-operator-names");
501   if (Opts.PascalStrings)
502     Res.push_back("-fpascal-strings");
503   if (Opts.CatchUndefined)
504     Res.push_back("-fcatch-undefined-behavior");
505   if (Opts.WritableStrings)
506     Res.push_back("-fwritable-strings");
507   if (Opts.ConstStrings)
508     Res.push_back("-Wwrite-strings");
509   if (!Opts.LaxVectorConversions)
510     Res.push_back("-fno-lax-vector-conversions");
511   if (Opts.AltiVec)
512     Res.push_back("-faltivec");
513   if (Opts.Exceptions)
514     Res.push_back("-fexceptions");
515   if (Opts.SjLjExceptions)
516     Res.push_back("-fsjlj-exceptions");
517   if (!Opts.RTTI)
518     Res.push_back("-fno-rtti");
519   if (!Opts.NeXTRuntime)
520     Res.push_back("-fgnu-runtime");
521   if (Opts.Freestanding)
522     Res.push_back("-ffreestanding");
523   if (Opts.NoBuiltin)
524     Res.push_back("-fno-builtin");
525   if (!Opts.AssumeSaneOperatorNew)
526     Res.push_back("-fno-assume-sane-operator-new");
527   if (!Opts.ThreadsafeStatics)
528     Res.push_back("-fno-threadsafe-statics");
529   if (Opts.POSIXThreads)
530     Res.push_back("-pthread");
531   if (Opts.Blocks)
532     Res.push_back("-fblocks");
533   if (Opts.EmitAllDecls)
534     Res.push_back("-femit-all-decls");
535   if (Opts.MathErrno)
536     Res.push_back("-fmath-errno");
537   if (Opts.OverflowChecking)
538     Res.push_back("-ftrapv");
539   if (Opts.HeinousExtensions)
540     Res.push_back("-fheinous-gnu-extensions");
541   // Optimize is implicit.
542   // OptimizeSize is implicit.
543   if (Opts.Static)
544     Res.push_back("-static-define");
545   if (Opts.DumpRecordLayouts)
546     Res.push_back("-fdump-record-layouts");
547   if (Opts.DumpVTableLayouts)
548     Res.push_back("-fdump-vtable-layouts");
549   if (Opts.NoBitFieldTypeAlign)
550     Res.push_back("-fno-bitfield-type-alignment");
551   if (Opts.SjLjExceptions)
552     Res.push_back("-fsjlj-exceptions");
553   if (Opts.PICLevel) {
554     Res.push_back("-pic-level");
555     Res.push_back(llvm::utostr(Opts.PICLevel));
556   }
557   if (Opts.ObjCGCBitmapPrint)
558     Res.push_back("-print-ivar-layout");
559   if (Opts.NoConstantCFStrings)
560     Res.push_back("-fno-constant-cfstrings");
561   if (!Opts.AccessControl)
562     Res.push_back("-fno-access-control");
563   if (!Opts.CharIsSigned)
564     Res.push_back("-fno-signed-char");
565   if (Opts.ShortWChar)
566     Res.push_back("-fshort-wchar");
567   if (!Opts.ElideConstructors)
568     Res.push_back("-fno-elide-constructors");
569   if (Opts.getGCMode() != LangOptions::NonGC) {
570     if (Opts.getGCMode() == LangOptions::HybridGC) {
571       Res.push_back("-fobjc-gc");
572     } else {
573       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
574       Res.push_back("-fobjc-gc-only");
575     }
576   }
577   if (Opts.getVisibilityMode() != LangOptions::Default) {
578     Res.push_back("-fvisibility");
579     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
580       Res.push_back("hidden");
581     } else {
582       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
583              "Invalid visibility!");
584       Res.push_back("protected");
585     }
586   }
587   if (Opts.getStackProtectorMode() != 0) {
588     Res.push_back("-stack-protector");
589     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
590   }
591   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
592     Res.push_back("-ftemplate-depth");
593     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
594   }
595   if (!Opts.ObjCConstantStringClass.empty()) {
596     Res.push_back("-fconstant-string-class");
597     Res.push_back(Opts.ObjCConstantStringClass);
598   }
599 }
600 
601 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
602                                    std::vector<std::string> &Res) {
603   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
604     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
605                   Opts.Macros[i].first);
606   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
607     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
608     Res.push_back("-include");
609     Res.push_back(Opts.Includes[i]);
610   }
611   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
612     Res.push_back("-imacros");
613     Res.push_back(Opts.MacroIncludes[i]);
614   }
615   if (!Opts.UsePredefines)
616     Res.push_back("-undef");
617   if (Opts.DetailedRecord)
618     Res.push_back("-detailed-preprocessing-record");
619   if (!Opts.ImplicitPCHInclude.empty()) {
620     Res.push_back("-include-pch");
621     Res.push_back(Opts.ImplicitPCHInclude);
622   }
623   if (!Opts.ImplicitPTHInclude.empty()) {
624     Res.push_back("-include-pth");
625     Res.push_back(Opts.ImplicitPTHInclude);
626   }
627   if (!Opts.TokenCache.empty()) {
628     if (Opts.ImplicitPTHInclude.empty()) {
629       Res.push_back("-token-cache");
630       Res.push_back(Opts.TokenCache);
631     } else
632       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
633              "Unsupported option combination!");
634   }
635   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
636     Res.push_back("-remap-file");
637     Res.push_back(Opts.RemappedFiles[i].first + ";" +
638                   Opts.RemappedFiles[i].second);
639   }
640 }
641 
642 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
643                                          std::vector<std::string> &Res) {
644   if (!Opts.ShowCPP && !Opts.ShowMacros)
645     llvm::report_fatal_error("Invalid option combination!");
646 
647   if (Opts.ShowCPP && Opts.ShowMacros)
648     Res.push_back("-dD");
649   else if (!Opts.ShowCPP && Opts.ShowMacros)
650     Res.push_back("-dM");
651 
652   if (!Opts.ShowLineMarkers)
653     Res.push_back("-P");
654   if (Opts.ShowComments)
655     Res.push_back("-C");
656   if (Opts.ShowMacroComments)
657     Res.push_back("-CC");
658 }
659 
660 static void TargetOptsToArgs(const TargetOptions &Opts,
661                              std::vector<std::string> &Res) {
662   Res.push_back("-triple");
663   Res.push_back(Opts.Triple);
664   if (!Opts.CPU.empty()) {
665     Res.push_back("-target-cpu");
666     Res.push_back(Opts.CPU);
667   }
668   if (!Opts.ABI.empty()) {
669     Res.push_back("-target-abi");
670     Res.push_back(Opts.ABI);
671   }
672   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
673     Res.push_back("-target-feature");
674     Res.push_back(Opts.Features[i]);
675   }
676 }
677 
678 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
679   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
680   CodeGenOptsToArgs(getCodeGenOpts(), Res);
681   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
682   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
683   FrontendOptsToArgs(getFrontendOpts(), Res);
684   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
685   LangOptsToArgs(getLangOpts(), Res);
686   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
687   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
688   TargetOptsToArgs(getTargetOpts(), Res);
689 }
690 
691 //===----------------------------------------------------------------------===//
692 // Deserialization (to args)
693 //===----------------------------------------------------------------------===//
694 
695 using namespace clang::driver;
696 using namespace clang::driver::cc1options;
697 
698 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
699                                        llvm::StringRef Default = "") {
700   if (Arg *A = Args.getLastArg(ID))
701     return A->getValue(Args);
702   return Default;
703 }
704 
705 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
706                               int Default, Diagnostic &Diags) {
707   Arg *A = Args.getLastArg(ID);
708   if (!A)
709     return Default;
710 
711   int Res = Default;
712   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
713     Diags.Report(diag::err_drv_invalid_int_value)
714         << A->getAsString(Args) << A->getValue(Args);
715 
716   return Res;
717 }
718 
719 static std::vector<std::string>
720 getAllArgValues(ArgList &Args, cc1options::ID ID) {
721   llvm::SmallVector<const char *, 16> Values;
722   Args.AddAllArgValues(Values, ID);
723   return std::vector<std::string>(Values.begin(), Values.end());
724 }
725 
726 //
727 
728 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
729                               Diagnostic &Diags) {
730   using namespace cc1options;
731 
732   Opts.AnalysisList.clear();
733 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
734   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
735 #include "clang/Frontend/Analyses.def"
736 
737   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
738     llvm::StringRef Name = A->getValue(Args);
739     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
740 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
741       .Case(CMDFLAG, NAME##Model)
742 #include "clang/Frontend/Analyses.def"
743       .Default(NumStores);
744     // FIXME: Error handling.
745     if (Value == NumStores)
746       Diags.Report(diag::err_drv_invalid_value)
747         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
748     else
749       Opts.AnalysisStoreOpt = Value;
750   }
751 
752   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
753     llvm::StringRef Name = A->getValue(Args);
754     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
755 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
756       .Case(CMDFLAG, NAME##Model)
757 #include "clang/Frontend/Analyses.def"
758       .Default(NumConstraints);
759     // FIXME: Error handling.
760     if (Value == NumConstraints)
761       Diags.Report(diag::err_drv_invalid_value)
762         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
763     else
764       Opts.AnalysisConstraintsOpt = Value;
765   }
766 
767   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
768     llvm::StringRef Name = A->getValue(Args);
769     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
770 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
771       .Case(CMDFLAG, PD_##NAME)
772 #include "clang/Frontend/Analyses.def"
773       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
774     // FIXME: Error handling.
775     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
776       Diags.Report(diag::err_drv_invalid_value)
777         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
778     else
779       Opts.AnalysisDiagOpt = Value;
780   }
781 
782   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
783   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
784   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
785   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
786   Opts.AnalyzeNestedBlocks =
787     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
788   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
789   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
790   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
791   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
792   Opts.EnableExperimentalInternalChecks =
793     Args.hasArg(OPT_analyzer_experimental_internal_checks);
794   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
795   Opts.MaxNodes = getLastArgIntValue(Args, OPT_analyzer_max_nodes,150000,Diags);
796 }
797 
798 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
799                              Diagnostic &Diags) {
800   using namespace cc1options;
801   // -Os implies -O2
802   if (Args.hasArg(OPT_Os))
803     Opts.OptimizationLevel = 2;
804   else {
805     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
806     if (Opts.OptimizationLevel > 3) {
807       Diags.Report(diag::err_drv_invalid_value)
808         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
809       Opts.OptimizationLevel = 3;
810     }
811   }
812 
813   // We must always run at least the always inlining pass.
814   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
815     : CodeGenOptions::OnlyAlwaysInlining;
816 
817   Opts.DebugInfo = Args.hasArg(OPT_g);
818   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
819   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
820   Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
821   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
822   Opts.NoCommon = Args.hasArg(OPT_fno_common);
823   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
824   Opts.OptimizeSize = Args.hasArg(OPT_Os);
825   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
826 
827   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
828   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
829   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
830   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
831   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
832   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
833   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
834   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
835   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
836   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
837   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
838   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
839 
840   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
841   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
842 
843   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
844   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
845 
846   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
847     llvm::StringRef Name = A->getValue(Args);
848     unsigned Method = llvm::StringSwitch<unsigned>(Name)
849       .Case("legacy", CodeGenOptions::Legacy)
850       .Case("non-legacy", CodeGenOptions::NonLegacy)
851       .Case("mixed", CodeGenOptions::Mixed)
852       .Default(~0U);
853     if (Method == ~0U)
854       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
855     else
856       Opts.ObjCDispatchMethod = Method;
857   }
858 }
859 
860 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
861                                       ArgList &Args) {
862   using namespace cc1options;
863   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
864   Opts.Targets = getAllArgValues(Args, OPT_MT);
865   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
866   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
867 }
868 
869 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
870                                 Diagnostic &Diags) {
871   using namespace cc1options;
872   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
873   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
874   Opts.Pedantic = Args.hasArg(OPT_pedantic);
875   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
876   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
877   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
878   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
879   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
880   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
881   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
882   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
883   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
884   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
885   Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
886   Opts.MacroBacktraceLimit
887     = getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
888                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
889   Opts.TemplateBacktraceLimit
890     = getLastArgIntValue(Args, OPT_ftemplate_backtrace_limit,
891                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
892                          Diags);
893   Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
894                                     DiagnosticOptions::DefaultTabStop, Diags);
895   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
896     Diags.Report(diag::warn_ignoring_ftabstop_value)
897       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
898     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
899   }
900   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
901   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
902   Opts.Warnings = getAllArgValues(Args, OPT_W);
903 }
904 
905 static FrontendOptions::InputKind
906 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
907   using namespace cc1options;
908   Opts.ProgramAction = frontend::ParseSyntaxOnly;
909   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
910     switch (A->getOption().getID()) {
911     default:
912       assert(0 && "Invalid option in group!");
913     case OPT_ast_dump:
914       Opts.ProgramAction = frontend::ASTDump; break;
915     case OPT_ast_print:
916       Opts.ProgramAction = frontend::ASTPrint; break;
917     case OPT_ast_print_xml:
918       Opts.ProgramAction = frontend::ASTPrintXML; break;
919     case OPT_ast_view:
920       Opts.ProgramAction = frontend::ASTView; break;
921     case OPT_dump_raw_tokens:
922       Opts.ProgramAction = frontend::DumpRawTokens; break;
923     case OPT_dump_tokens:
924       Opts.ProgramAction = frontend::DumpTokens; break;
925     case OPT_S:
926       Opts.ProgramAction = frontend::EmitAssembly; break;
927     case OPT_emit_llvm_bc:
928       Opts.ProgramAction = frontend::EmitBC; break;
929     case OPT_emit_html:
930       Opts.ProgramAction = frontend::EmitHTML; break;
931     case OPT_emit_llvm:
932       Opts.ProgramAction = frontend::EmitLLVM; break;
933     case OPT_emit_llvm_only:
934       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
935     case OPT_emit_obj:
936       Opts.ProgramAction = frontend::EmitObj; break;
937     case OPT_fixit_EQ:
938       Opts.FixItSuffix = A->getValue(Args);
939       // fall-through!
940     case OPT_fixit:
941       Opts.ProgramAction = frontend::FixIt; break;
942     case OPT_emit_pch:
943       Opts.ProgramAction = frontend::GeneratePCH; break;
944     case OPT_emit_pth:
945       Opts.ProgramAction = frontend::GeneratePTH; break;
946     case OPT_init_only:
947       Opts.ProgramAction = frontend::InitOnly; break;
948     case OPT_parse_noop:
949       Opts.ProgramAction = frontend::ParseNoop; break;
950     case OPT_parse_print_callbacks:
951       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
952     case OPT_fsyntax_only:
953       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
954     case OPT_print_decl_contexts:
955       Opts.ProgramAction = frontend::PrintDeclContext; break;
956     case OPT_E:
957       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
958     case OPT_rewrite_macros:
959       Opts.ProgramAction = frontend::RewriteMacros; break;
960     case OPT_rewrite_objc:
961       Opts.ProgramAction = frontend::RewriteObjC; break;
962     case OPT_rewrite_test:
963       Opts.ProgramAction = frontend::RewriteTest; break;
964     case OPT_analyze:
965       Opts.ProgramAction = frontend::RunAnalysis; break;
966     case OPT_Eonly:
967       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
968     }
969   }
970   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
971     Opts.ProgramAction = frontend::PluginAction;
972     Opts.ActionName = A->getValue(Args);
973   }
974 
975   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
976     Opts.CodeCompletionAt =
977       ParsedSourceLocation::FromString(A->getValue(Args));
978     if (Opts.CodeCompletionAt.FileName.empty())
979       Diags.Report(diag::err_drv_invalid_value)
980         << A->getAsString(Args) << A->getValue(Args);
981   }
982   Opts.DebugCodeCompletionPrinter =
983     !Args.hasArg(OPT_no_code_completion_debug_printer);
984   Opts.DisableFree = Args.hasArg(OPT_disable_free);
985 
986   Opts.OutputFile = getLastArgValue(Args, OPT_o);
987   Opts.Plugins = getAllArgValues(Args, OPT_load);
988   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
989   Opts.ShowHelp = Args.hasArg(OPT_help);
990   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
991   Opts.ShowStats = Args.hasArg(OPT_print_stats);
992   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
993   Opts.ShowVersion = Args.hasArg(OPT_version);
994   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
995   Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
996   Opts.LLVMArgs = getAllArgValues(Args, OPT_mllvm);
997 
998   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
999   if (const Arg *A = Args.getLastArg(OPT_x)) {
1000     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
1001       .Case("c", FrontendOptions::IK_C)
1002       .Case("cl", FrontendOptions::IK_OpenCL)
1003       .Case("c", FrontendOptions::IK_C)
1004       .Case("cl", FrontendOptions::IK_OpenCL)
1005       .Case("c++", FrontendOptions::IK_CXX)
1006       .Case("objective-c", FrontendOptions::IK_ObjC)
1007       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
1008       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
1009       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
1010       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
1011       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
1012       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1013       .Case("c-header", FrontendOptions::IK_C)
1014       .Case("objective-c-header", FrontendOptions::IK_ObjC)
1015       .Case("c++-header", FrontendOptions::IK_CXX)
1016       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1017       .Case("ast", FrontendOptions::IK_AST)
1018       .Default(FrontendOptions::IK_None);
1019     if (DashX == FrontendOptions::IK_None)
1020       Diags.Report(diag::err_drv_invalid_value)
1021         << A->getAsString(Args) << A->getValue(Args);
1022   }
1023 
1024   // '-' is the default input if none is given.
1025   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
1026   Opts.Inputs.clear();
1027   if (Inputs.empty())
1028     Inputs.push_back("-");
1029   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1030     FrontendOptions::InputKind IK = DashX;
1031     if (IK == FrontendOptions::IK_None) {
1032       IK = FrontendOptions::getInputKindForExtension(
1033         llvm::StringRef(Inputs[i]).rsplit('.').second);
1034       // FIXME: Remove this hack.
1035       if (i == 0)
1036         DashX = IK;
1037     }
1038     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1039   }
1040 
1041   return DashX;
1042 }
1043 
1044 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1045                                                  void *MainAddr) {
1046   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1047 
1048   if (!P.isEmpty()) {
1049     P.eraseComponent();  // Remove /clang from foo/bin/clang
1050     P.eraseComponent();  // Remove /bin   from foo/bin
1051 
1052     // Get foo/lib/clang/<version>/include
1053     P.appendComponent("lib");
1054     P.appendComponent("clang");
1055     P.appendComponent(CLANG_VERSION_STRING);
1056   }
1057 
1058   return P.str();
1059 }
1060 
1061 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1062   using namespace cc1options;
1063   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1064   Opts.Verbose = Args.hasArg(OPT_v);
1065   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1066   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1067   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1068   Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1069 
1070   // Add -I... and -F... options in order.
1071   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1072          ie = Args.filtered_end(); it != ie; ++it)
1073     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1074                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1075 
1076   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1077   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1078   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1079                                              OPT_iwithprefixbefore),
1080          ie = Args.filtered_end(); it != ie; ++it) {
1081     if (it->getOption().matches(OPT_iprefix))
1082       Prefix = it->getValue(Args);
1083     else if (it->getOption().matches(OPT_iwithprefix))
1084       Opts.AddPath(Prefix.str() + it->getValue(Args),
1085                    frontend::System, false, false);
1086     else
1087       Opts.AddPath(Prefix.str() + it->getValue(Args),
1088                    frontend::Angled, false, false);
1089   }
1090 
1091   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1092          ie = Args.filtered_end(); it != ie; ++it)
1093     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1094   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1095          ie = Args.filtered_end(); it != ie; ++it)
1096     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1097   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1098          ie = Args.filtered_end(); it != ie; ++it)
1099     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1100 
1101   // FIXME: Need options for the various environment variables!
1102 }
1103 
1104 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1105                           FrontendOptions::InputKind IK,
1106                           Diagnostic &Diags) {
1107   // FIXME: Cleanup per-file based stuff.
1108 
1109   // Set some properties which depend soley on the input kind; it would be nice
1110   // to move these to the language standard, and have the driver resolve the
1111   // input kind + language standard.
1112   if (IK == FrontendOptions::IK_Asm) {
1113     Opts.AsmPreprocessor = 1;
1114   } else if (IK == FrontendOptions::IK_ObjC ||
1115              IK == FrontendOptions::IK_ObjCXX ||
1116              IK == FrontendOptions::IK_PreprocessedObjC ||
1117              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1118     Opts.ObjC1 = Opts.ObjC2 = 1;
1119   }
1120 
1121   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1122   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1123     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1124 #define LANGSTANDARD(id, name, desc, features) \
1125       .Case(name, LangStandard::lang_##id)
1126 #include "clang/Frontend/LangStandards.def"
1127       .Default(LangStandard::lang_unspecified);
1128     if (LangStd == LangStandard::lang_unspecified)
1129       Diags.Report(diag::err_drv_invalid_value)
1130         << A->getAsString(Args) << A->getValue(Args);
1131   }
1132 
1133   if (LangStd == LangStandard::lang_unspecified) {
1134     // Based on the base language, pick one.
1135     switch (IK) {
1136     case FrontendOptions::IK_None:
1137     case FrontendOptions::IK_AST:
1138       assert(0 && "Invalid input kind!");
1139     case FrontendOptions::IK_OpenCL:
1140       LangStd = LangStandard::lang_opencl;
1141       break;
1142     case FrontendOptions::IK_Asm:
1143     case FrontendOptions::IK_C:
1144     case FrontendOptions::IK_PreprocessedC:
1145     case FrontendOptions::IK_ObjC:
1146     case FrontendOptions::IK_PreprocessedObjC:
1147       LangStd = LangStandard::lang_gnu99;
1148       break;
1149     case FrontendOptions::IK_CXX:
1150     case FrontendOptions::IK_PreprocessedCXX:
1151     case FrontendOptions::IK_ObjCXX:
1152     case FrontendOptions::IK_PreprocessedObjCXX:
1153       LangStd = LangStandard::lang_gnucxx98;
1154       break;
1155     }
1156   }
1157 
1158   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1159   Opts.BCPLComment = Std.hasBCPLComments();
1160   Opts.C99 = Std.isC99();
1161   Opts.CPlusPlus = Std.isCPlusPlus();
1162   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1163   Opts.Digraphs = Std.hasDigraphs();
1164   Opts.GNUMode = Std.isGNUMode();
1165   Opts.GNUInline = !Std.isC99();
1166   Opts.HexFloats = Std.hasHexFloats();
1167   Opts.ImplicitInt = Std.hasImplicitInt();
1168 
1169   // OpenCL has some additional defaults.
1170   if (LangStd == LangStandard::lang_opencl) {
1171     Opts.OpenCL = 1;
1172     Opts.AltiVec = 1;
1173     Opts.CXXOperatorNames = 1;
1174     Opts.LaxVectorConversions = 1;
1175   }
1176 
1177   // OpenCL and C++ both have bool, true, false keywords.
1178   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1179 
1180   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1181   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1182   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1183   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1184   // name, as it doesn't seem a useful distinction.
1185   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1186                                   Opts.GNUMode);
1187 
1188   if (Opts.CPlusPlus)
1189     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1190 
1191   if (Args.hasArg(OPT_fobjc_gc_only))
1192     Opts.setGCMode(LangOptions::GCOnly);
1193   else if (Args.hasArg(OPT_fobjc_gc))
1194     Opts.setGCMode(LangOptions::HybridGC);
1195 
1196   if (Args.hasArg(OPT_print_ivar_layout))
1197     Opts.ObjCGCBitmapPrint = 1;
1198   if (Args.hasArg(OPT_fno_constant_cfstrings))
1199     Opts.NoConstantCFStrings = 1;
1200 
1201   if (Args.hasArg(OPT_faltivec))
1202     Opts.AltiVec = 1;
1203 
1204   if (Args.hasArg(OPT_pthread))
1205     Opts.POSIXThreads = 1;
1206 
1207   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1208                                         "default");
1209   if (Vis == "default")
1210     Opts.setVisibilityMode(LangOptions::Default);
1211   else if (Vis == "hidden")
1212     Opts.setVisibilityMode(LangOptions::Hidden);
1213   else if (Vis == "protected")
1214     Opts.setVisibilityMode(LangOptions::Protected);
1215   else
1216     Diags.Report(diag::err_drv_invalid_value)
1217       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1218 
1219   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1220 
1221   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1222   // is specified, or -std is set to a conforming mode.
1223   Opts.Trigraphs = !Opts.GNUMode;
1224   if (Args.hasArg(OPT_trigraphs))
1225     Opts.Trigraphs = 1;
1226 
1227   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1228                                    OPT_fno_dollars_in_identifiers,
1229                                    !Opts.AsmPreprocessor);
1230   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1231   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1232   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1233   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1234   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1235     Opts.LaxVectorConversions = 0;
1236   if (Args.hasArg(OPT_fno_threadsafe_statics))
1237     Opts.ThreadsafeStatics = 0;
1238   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1239   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1240   Opts.Blocks = Args.hasArg(OPT_fblocks);
1241   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1242   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1243   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1244   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1245   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1246   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1247   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1248   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1249   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1250   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 1024,
1251                                                Diags);
1252   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1253   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1254                                                  OPT_fconstant_string_class);
1255   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1256   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1257   if (Opts.ObjCNonFragileABI2)
1258     Opts.ObjCNonFragileABI = true;
1259   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1260   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1261   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1262   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1263   Opts.Static = Args.hasArg(OPT_static_define);
1264   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1265   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1266   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1267   Opts.OptimizeSize = 0;
1268 
1269   // FIXME: Eliminate this dependency.
1270   unsigned Opt =
1271     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1272   Opts.Optimize = Opt != 0;
1273 
1274   // This is the __NO_INLINE__ define, which just depends on things like the
1275   // optimization level and -fno-inline, not actually whether the backend has
1276   // inlining enabled.
1277   //
1278   // FIXME: This is affected by other options (-fno-inline).
1279   Opts.NoInline = !Opt;
1280 
1281   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1282   switch (SSP) {
1283   default:
1284     Diags.Report(diag::err_drv_invalid_value)
1285       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1286     break;
1287   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1288   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1289   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1290   }
1291 }
1292 
1293 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1294                                   Diagnostic &Diags) {
1295   using namespace cc1options;
1296   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1297   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1298   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1299       Opts.TokenCache = A->getValue(Args);
1300   else
1301     Opts.TokenCache = Opts.ImplicitPTHInclude;
1302   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1303   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1304   // Add macros from the command line.
1305   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1306          ie = Args.filtered_end(); it != ie; ++it) {
1307     if (it->getOption().matches(OPT_D))
1308       Opts.addMacroDef(it->getValue(Args));
1309     else
1310       Opts.addMacroUndef(it->getValue(Args));
1311   }
1312 
1313   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1314 
1315   // Add the ordered list of -includes.
1316   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1317                                              OPT_include_pth),
1318          ie = Args.filtered_end(); it != ie; ++it) {
1319     // PCH is handled specially, we need to extra the original include path.
1320     if (it->getOption().matches(OPT_include_pch)) {
1321       std::string OriginalFile =
1322         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1323       if (OriginalFile.empty())
1324         continue;
1325 
1326       Opts.Includes.push_back(OriginalFile);
1327     } else
1328       Opts.Includes.push_back(it->getValue(Args));
1329   }
1330 
1331   // Include 'altivec.h' if -faltivec option present
1332   if (Args.hasArg(OPT_faltivec))
1333     Opts.Includes.push_back("altivec.h");
1334 
1335   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1336          ie = Args.filtered_end(); it != ie; ++it) {
1337     std::pair<llvm::StringRef,llvm::StringRef> Split =
1338       llvm::StringRef(it->getValue(Args)).split(';');
1339 
1340     if (Split.second.empty()) {
1341       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1342       continue;
1343     }
1344 
1345     Opts.addRemappedFile(Split.first, Split.second);
1346   }
1347 }
1348 
1349 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1350                                         ArgList &Args) {
1351   using namespace cc1options;
1352   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1353   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1354   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1355   Opts.ShowComments = Args.hasArg(OPT_C);
1356   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1357 }
1358 
1359 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1360   using namespace cc1options;
1361   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1362   Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1363   Opts.Triple = getLastArgValue(Args, OPT_triple);
1364   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1365 
1366   // Use the host triple if unspecified.
1367   if (Opts.Triple.empty())
1368     Opts.Triple = llvm::sys::getHostTriple();
1369 }
1370 
1371 //
1372 
1373 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1374                                         const char **ArgBegin,
1375                                         const char **ArgEnd,
1376                                         Diagnostic &Diags) {
1377   // Parse the arguments.
1378   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1379   unsigned MissingArgIndex, MissingArgCount;
1380   llvm::OwningPtr<InputArgList> Args(
1381     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1382 
1383   // Check for missing argument error.
1384   if (MissingArgCount)
1385     Diags.Report(diag::err_drv_missing_argument)
1386       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1387 
1388   // Issue errors on unknown arguments.
1389   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1390          ie = Args->filtered_end(); it != ie; ++it)
1391     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1392 
1393   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1394   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1395   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1396   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1397   FrontendOptions::InputKind DashX =
1398     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1399   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1400   if (DashX != FrontendOptions::IK_AST)
1401     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1402   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1403   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1404   ParseTargetArgs(Res.getTargetOpts(), *Args);
1405 }
1406