CompilerInvocation.cpp revision 9f61aa9e280adea9fbf3365f0e4f6ed568c9885a 
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"
29using namespace clang;
30
31static 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
41static 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
51static 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
61static 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
75static 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
117static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                              std::vector<std::string> &Res) {
119  if (Opts.DebugInfo)
120    Res.push_back("-g");
121  if (Opts.DisableLLVMOpts)
122    Res.push_back("-disable-llvm-optzns");
123  if (Opts.DisableRedZone)
124    Res.push_back("-disable-red-zone");
125  if (!Opts.MergeAllConstants)
126    Res.push_back("-fno-merge-all-constants");
127  if (Opts.NoCommon)
128    Res.push_back("-fno-common");
129  if (Opts.NoImplicitFloat)
130    Res.push_back("-no-implicit-float");
131  if (Opts.OptimizeSize) {
132    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
133    Res.push_back("-Os");
134  } else if (Opts.OptimizationLevel != 0)
135    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
136  if (!Opts.MainFileName.empty()) {
137    Res.push_back("-main-file-name");
138    Res.push_back(Opts.MainFileName);
139  }
140  // SimplifyLibCalls is only derived.
141  // TimePasses is only derived.
142  // UnitAtATime is unused.
143  // UnrollLoops is only derived.
144  // VerifyModule is only derived.
145  // Inlining is only derived.
146
147  if (Opts.AsmVerbose)
148    Res.push_back("-masm-verbose");
149  if (!Opts.CodeModel.empty()) {
150    Res.push_back("-mcode-model");
151    Res.push_back(Opts.CodeModel);
152  }
153  if (!Opts.DebugPass.empty()) {
154    Res.push_back("-mdebug-pass");
155    Res.push_back(Opts.DebugPass);
156  }
157  if (Opts.DisableFPElim)
158    Res.push_back("-mdisable-fp-elim");
159  if (!Opts.FloatABI.empty()) {
160    Res.push_back("-mfloat-abi");
161    Res.push_back(Opts.FloatABI);
162  }
163  if (!Opts.LimitFloatPrecision.empty()) {
164    Res.push_back("-mlimit-float-precision");
165    Res.push_back(Opts.LimitFloatPrecision);
166  }
167  if (Opts.NoZeroInitializedInBSS)
168    Res.push_back("-mno-zero-initialized-bss");
169  if (Opts.SoftFloat)
170    Res.push_back("-msoft-float");
171  if (Opts.UnwindTables)
172    Res.push_back("-munwind-tables");
173  if (Opts.RelocationModel != "pic") {
174    Res.push_back("-mrelocation-model");
175    Res.push_back(Opts.RelocationModel);
176  }
177}
178
179static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
180                                       std::vector<std::string> &Res) {
181  if (Opts.IncludeSystemHeaders)
182    Res.push_back("-sys-header-deps");
183  if (Opts.UsePhonyTargets)
184    Res.push_back("-MP");
185  if (!Opts.OutputFile.empty()) {
186    Res.push_back("-dependency-file");
187    Res.push_back(Opts.OutputFile);
188  }
189  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
190    Res.push_back("-MT");
191    Res.push_back(Opts.Targets[i]);
192  }
193}
194
195static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
196                                 std::vector<std::string> &Res) {
197  if (Opts.IgnoreWarnings)
198    Res.push_back("-w");
199  if (Opts.NoRewriteMacros)
200    Res.push_back("-Wno-rewrite-macros");
201  if (Opts.Pedantic)
202    Res.push_back("-pedantic");
203  if (Opts.PedanticErrors)
204    Res.push_back("-pedantic-errors");
205  if (!Opts.ShowColumn)
206    Res.push_back("-fno-show-column");
207  if (!Opts.ShowLocation)
208    Res.push_back("-fno-show-source-location");
209  if (!Opts.ShowCarets)
210    Res.push_back("-fno-caret-diagnostics");
211  if (!Opts.ShowFixits)
212    Res.push_back("-fno-diagnostics-fixit-info");
213  if (Opts.ShowSourceRanges)
214    Res.push_back("-fdiagnostics-print-source-range-info");
215  if (Opts.ShowColors)
216    Res.push_back("-fcolor-diagnostics");
217  if (Opts.VerifyDiagnostics)
218    Res.push_back("-verify");
219  if (Opts.ShowOptionNames)
220    Res.push_back("-fdiagnostics-show-option");
221  if (Opts.MessageLength) {
222    Res.push_back("-fmessage-length");
223    Res.push_back(llvm::utostr(Opts.MessageLength));
224  }
225  if (!Opts.DumpBuildInformation.empty()) {
226    Res.push_back("-dump-build-information");
227    Res.push_back(Opts.DumpBuildInformation);
228  }
229  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
230    Res.push_back("-W" + Opts.Warnings[i]);
231}
232
233static const char *getInputKindName(FrontendOptions::InputKind Kind) {
234  switch (Kind) {
235  case FrontendOptions::IK_None:              break;
236  case FrontendOptions::IK_AST:               return "ast";
237  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
238  case FrontendOptions::IK_C:                 return "c";
239  case FrontendOptions::IK_CXX:               return "c++";
240  case FrontendOptions::IK_ObjC:              return "objective-c";
241  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
242  case FrontendOptions::IK_OpenCL:            return "cl";
243  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
244  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
245  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
246  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
247  }
248
249  llvm_unreachable("Unexpected language kind!");
250  return 0;
251}
252
253static const char *getActionName(frontend::ActionKind Kind) {
254  switch (Kind) {
255  case frontend::PluginAction:
256  case frontend::InheritanceView:
257    llvm_unreachable("Invalid kind!");
258
259  case frontend::ASTDump:                return "-ast-dump";
260  case frontend::ASTPrint:               return "-ast-print";
261  case frontend::ASTPrintXML:            return "-ast-print-xml";
262  case frontend::ASTView:                return "-ast-view";
263  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
264  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
265  case frontend::DumpTokens:             return "-dump-tokens";
266  case frontend::EmitAssembly:           return "-S";
267  case frontend::EmitBC:                 return "-emit-llvm-bc";
268  case frontend::EmitHTML:               return "-emit-html";
269  case frontend::EmitLLVM:               return "-emit-llvm";
270  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
271  case frontend::FixIt:                  return "-fixit";
272  case frontend::GeneratePCH:            return "-emit-pch";
273  case frontend::GeneratePTH:            return "-emit-pth";
274  case frontend::ParseNoop:              return "-parse-noop";
275  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
276  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
277  case frontend::PrintDeclContext:       return "-print-decl-contexts";
278  case frontend::PrintPreprocessedInput: return "-E";
279  case frontend::RewriteBlocks:          return "-rewrite-blocks";
280  case frontend::RewriteMacros:          return "-rewrite-macros";
281  case frontend::RewriteObjC:            return "-rewrite-objc";
282  case frontend::RewriteTest:            return "-rewrite-test";
283  case frontend::RunAnalysis:            return "-analyze";
284  case frontend::RunPreprocessorOnly:    return "-Eonly";
285  }
286
287  llvm_unreachable("Unexpected language kind!");
288  return 0;
289}
290
291static void FrontendOptsToArgs(const FrontendOptions &Opts,
292                               std::vector<std::string> &Res) {
293  if (!Opts.DebugCodeCompletionPrinter)
294    Res.push_back("-no-code-completion-debug-printer");
295  if (Opts.DisableFree)
296    Res.push_back("-disable-free");
297  if (Opts.EmptyInputOnly)
298    Res.push_back("-empty-input-only");
299  if (Opts.RelocatablePCH)
300    Res.push_back("-relocatable-pch");
301  if (Opts.ShowHelp)
302    Res.push_back("-help");
303  if (Opts.ShowMacrosInCodeCompletion)
304    Res.push_back("-code-completion-macros");
305  if (Opts.ShowStats)
306    Res.push_back("-print-stats");
307  if (Opts.ShowTimers)
308    Res.push_back("-ftime-report");
309  if (Opts.ShowVersion)
310    Res.push_back("-version");
311
312  bool NeedLang = false;
313  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
314    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
315        Opts.Inputs[i].first)
316      NeedLang = true;
317  if (NeedLang) {
318    Res.push_back("-x");
319    Res.push_back(getInputKindName(Opts.Inputs[0].first));
320  }
321  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
322    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
323           "Unable to represent this input vector!");
324    Res.push_back(Opts.Inputs[i].second);
325  }
326
327  if (!Opts.OutputFile.empty()) {
328    Res.push_back("-o");
329    Res.push_back(Opts.OutputFile);
330  }
331  if (!Opts.ViewClassInheritance.empty()) {
332    Res.push_back("-cxx-inheritance-view");
333    Res.push_back(Opts.ViewClassInheritance);
334  }
335  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
336    Res.push_back("-fixit-at");
337    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
338                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
339                  llvm::utostr(Opts.FixItLocations[i].Column));
340  }
341  if (!Opts.CodeCompletionAt.FileName.empty()) {
342    Res.push_back("-code-completion-at");
343    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
344                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
345                  llvm::utostr(Opts.CodeCompletionAt.Column));
346  }
347  if (Opts.ProgramAction != frontend::InheritanceView &&
348      Opts.ProgramAction != frontend::PluginAction)
349    Res.push_back(getActionName(Opts.ProgramAction));
350  if (!Opts.ActionName.empty()) {
351    Res.push_back("-plugin");
352    Res.push_back(Opts.ActionName);
353  }
354  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
355    Res.push_back("-load");
356    Res.push_back(Opts.Plugins[i]);
357  }
358}
359
360static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
361                                   std::vector<std::string> &Res) {
362  if (Opts.Sysroot != "/") {
363    Res.push_back("-isysroot");
364    Res.push_back(Opts.Sysroot);
365  }
366
367  /// User specified include entries.
368  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
369    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
370    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
371      llvm::llvm_report_error("Invalid option set!");
372    if (E.IsUserSupplied) {
373      if (E.Group == frontend::After) {
374        Res.push_back("-idirafter");
375      } else if (E.Group == frontend::Quoted) {
376        Res.push_back("-iquote");
377      } else if (E.Group == frontend::System) {
378        Res.push_back("-isystem");
379      } else {
380        assert(E.Group == frontend::Angled && "Invalid group!");
381        Res.push_back(E.IsFramework ? "-F" : "-I");
382      }
383    } else {
384      if (E.Group != frontend::Angled && E.Group != frontend::System)
385        llvm::llvm_report_error("Invalid option set!");
386      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
387                    "-iwithprefix");
388    }
389    Res.push_back(E.Path);
390  }
391
392  if (!Opts.EnvIncPath.empty()) {
393    // FIXME: Provide an option for this, and move env detection to driver.
394    llvm::llvm_report_error("Not yet implemented!");
395  }
396  if (!Opts.CEnvIncPath.empty()) {
397    // FIXME: Provide an option for this, and move env detection to driver.
398    llvm::llvm_report_error("Not yet implemented!");
399  }
400  if (!Opts.ObjCEnvIncPath.empty()) {
401    // FIXME: Provide an option for this, and move env detection to driver.
402    llvm::llvm_report_error("Not yet implemented!");
403  }
404  if (!Opts.CXXEnvIncPath.empty()) {
405    // FIXME: Provide an option for this, and move env detection to driver.
406    llvm::llvm_report_error("Not yet implemented!");
407  }
408  if (!Opts.ObjCXXEnvIncPath.empty()) {
409    // FIXME: Provide an option for this, and move env detection to driver.
410    llvm::llvm_report_error("Not yet implemented!");
411  }
412  if (!Opts.BuiltinIncludePath.empty()) {
413    // FIXME: Provide an option for this, and move to driver.
414  }
415  if (!Opts.UseStandardIncludes)
416    Res.push_back("-nostdinc");
417  if (Opts.Verbose)
418    Res.push_back("-v");
419}
420
421static void LangOptsToArgs(const LangOptions &Opts,
422                           std::vector<std::string> &Res) {
423  LangOptions DefaultLangOpts;
424
425  // FIXME: Need to set -std to get all the implicit options.
426
427  // FIXME: We want to only pass options relative to the defaults, which
428  // requires constructing a target. :(
429  //
430  // It would be better to push the all target specific choices into the driver,
431  // so that everything below that was more uniform.
432
433  if (Opts.Trigraphs)
434    Res.push_back("-trigraphs");
435  // Implicit based on the input kind:
436  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
437  // Implicit based on the input language standard:
438  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
439  if (Opts.DollarIdents)
440    Res.push_back("-fdollars-in-identifiers");
441  if (Opts.Microsoft)
442    Res.push_back("-fms-extensions=1");
443  if (Opts.ObjCNonFragileABI)
444    Res.push_back("-fobjc-nonfragile-abi");
445  // NoInline is implicit.
446  if (!Opts.CXXOperatorNames)
447    Res.push_back("-fno-operator-names");
448  if (Opts.PascalStrings)
449    Res.push_back("-fpascal-strings");
450  if (Opts.CatchUndefined)
451    Res.push_back("-fcatch-undefined-behavior");
452  if (Opts.WritableStrings)
453    Res.push_back("-fwritable-strings");
454  if (!Opts.LaxVectorConversions)
455    Res.push_back("-fno-lax-vector-conversions");
456  if (Opts.AltiVec)
457    Res.push_back("-faltivec");
458  if (Opts.Exceptions)
459    Res.push_back("-fexceptions");
460  if (!Opts.RTTI)
461    Res.push_back("-fno-rtti");
462  if (!Opts.NeXTRuntime)
463    Res.push_back("-fgnu-runtime");
464  if (Opts.Freestanding)
465    Res.push_back("-ffreestanding");
466  if (Opts.NoBuiltin)
467    Res.push_back("-fno-builtin");
468  if (Opts.ThreadsafeStatics)
469    llvm::llvm_report_error("FIXME: Not yet implemented!");
470  if (Opts.POSIXThreads)
471    Res.push_back("-pthread");
472  if (Opts.Blocks)
473    Res.push_back("-fblocks");
474  if (Opts.EmitAllDecls)
475    Res.push_back("-femit-all-decls");
476  if (!Opts.MathErrno)
477    Res.push_back("-fno-math-errno");
478  if (Opts.OverflowChecking)
479    Res.push_back("-ftrapv");
480  if (Opts.HeinousExtensions)
481    Res.push_back("-fheinous-gnu-extensions");
482  // Optimize is implicit.
483  // OptimizeSize is implicit.
484  if (Opts.Static)
485    Res.push_back("-static-define");
486  if (Opts.PICLevel) {
487    Res.push_back("-pic-level");
488    Res.push_back(llvm::utostr(Opts.PICLevel));
489  }
490  if (Opts.ObjCGCBitmapPrint)
491    Res.push_back("-print-ivar-layout");
492  // FIXME: Don't forget to update when the default changes!
493  if (Opts.AccessControl)
494    Res.push_back("-faccess-control");
495  if (!Opts.CharIsSigned)
496    Res.push_back("-fno-signed-char");
497  if (Opts.ShortWChar)
498    Res.push_back("-fshort-wchar");
499  if (!Opts.ElideConstructors)
500    Res.push_back("-fno-elide-constructors");
501  if (Opts.getGCMode() != LangOptions::NonGC) {
502    if (Opts.getGCMode() == LangOptions::HybridGC) {
503      Res.push_back("-fobjc-gc");
504    } else {
505      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
506      Res.push_back("-fobjc-gc-only");
507    }
508  }
509  if (Opts.getVisibilityMode() != LangOptions::Default) {
510    Res.push_back("-fvisibility");
511    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
512      Res.push_back("hidden");
513    } else {
514      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
515             "Invalid visibility!");
516      Res.push_back("protected");
517    }
518  }
519  if (Opts.getStackProtectorMode() != 0) {
520    Res.push_back("-stack-protector");
521    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
522  }
523  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
524    Res.push_back("-ftemplate-depth");
525    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
526  }
527  if (!Opts.ObjCConstantStringClass.empty()) {
528    Res.push_back("-fconstant-string-class");
529    Res.push_back(Opts.ObjCConstantStringClass);
530  }
531}
532
533static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
534                                   std::vector<std::string> &Res) {
535  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
536    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
537                  Opts.Macros[i].first);
538  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
539    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
540    Res.push_back("-include");
541    Res.push_back(Opts.Includes[i]);
542  }
543  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
544    Res.push_back("-imacros");
545    Res.push_back(Opts.MacroIncludes[i]);
546  }
547  if (!Opts.UsePredefines)
548    Res.push_back("-undef");
549  if (!Opts.ImplicitPCHInclude.empty()) {
550    Res.push_back("-include-pch");
551    Res.push_back(Opts.ImplicitPCHInclude);
552  }
553  if (!Opts.ImplicitPTHInclude.empty()) {
554    Res.push_back("-include-pth");
555    Res.push_back(Opts.ImplicitPTHInclude);
556  }
557  if (!Opts.TokenCache.empty()) {
558    if (Opts.ImplicitPTHInclude.empty()) {
559      Res.push_back("-token-cache");
560      Res.push_back(Opts.TokenCache);
561    } else
562      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
563             "Unsupported option combination!");
564  }
565  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
566    Res.push_back("-remap-file");
567    Res.push_back(Opts.RemappedFiles[i].first + ";" +
568                  Opts.RemappedFiles[i].second);
569  }
570}
571
572static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
573                                         std::vector<std::string> &Res) {
574  if (!Opts.ShowCPP && !Opts.ShowMacros)
575    llvm::llvm_report_error("Invalid option combination!");
576
577  if (Opts.ShowCPP && Opts.ShowMacros)
578    Res.push_back("-dD");
579  else if (!Opts.ShowCPP && Opts.ShowMacros)
580    Res.push_back("-dM");
581
582  if (!Opts.ShowLineMarkers)
583    Res.push_back("-P");
584  if (Opts.ShowComments)
585    Res.push_back("-C");
586  if (Opts.ShowMacroComments)
587    Res.push_back("-CC");
588}
589
590static void TargetOptsToArgs(const TargetOptions &Opts,
591                             std::vector<std::string> &Res) {
592  Res.push_back("-triple");
593  Res.push_back(Opts.Triple);
594  if (!Opts.CPU.empty()) {
595    Res.push_back("-mcpu");
596    Res.push_back(Opts.CPU);
597  }
598  if (!Opts.ABI.empty()) {
599    Res.push_back("-target-abi");
600    Res.push_back(Opts.ABI);
601  }
602  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
603    Res.push_back("-target-feature");
604    Res.push_back(Opts.Features[i]);
605  }
606}
607
608void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
609  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
610  CodeGenOptsToArgs(getCodeGenOpts(), Res);
611  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
612  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
613  FrontendOptsToArgs(getFrontendOpts(), Res);
614  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
615  LangOptsToArgs(getLangOpts(), Res);
616  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
617  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
618  TargetOptsToArgs(getTargetOpts(), Res);
619}
620
621//===----------------------------------------------------------------------===//
622// Deserialization (to args)
623//===----------------------------------------------------------------------===//
624
625using namespace clang::driver;
626using namespace clang::driver::cc1options;
627
628static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
629                                       llvm::StringRef Default = "") {
630  if (Arg *A = Args.getLastArg(ID))
631    return A->getValue(Args);
632  return Default;
633}
634
635static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
636                              int Default, Diagnostic &Diags) {
637  Arg *A = Args.getLastArg(ID);
638  if (!A)
639    return Default;
640
641  int Res = Default;
642  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
643    Diags.Report(diag::err_drv_invalid_int_value)
644        << A->getAsString(Args) << A->getValue(Args);
645
646  return Res;
647}
648
649static std::vector<std::string>
650getAllArgValues(ArgList &Args, cc1options::ID ID) {
651  llvm::SmallVector<const char *, 16> Values;
652  Args.AddAllArgValues(Values, ID);
653  return std::vector<std::string>(Values.begin(), Values.end());
654}
655
656//
657
658static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
659                              Diagnostic &Diags) {
660  using namespace cc1options;
661
662  Opts.AnalysisList.clear();
663#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
664  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
665#include "clang/Frontend/Analyses.def"
666
667  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
668    llvm::StringRef Name = A->getValue(Args);
669    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
670#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
671      .Case(CMDFLAG, NAME##Model)
672#include "clang/Frontend/Analyses.def"
673      .Default(NumStores);
674    // FIXME: Error handling.
675    if (Value == NumStores)
676      Diags.Report(diag::err_drv_invalid_value)
677        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
678    else
679      Opts.AnalysisStoreOpt = Value;
680  }
681
682  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
683    llvm::StringRef Name = A->getValue(Args);
684    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
685#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
686      .Case(CMDFLAG, NAME##Model)
687#include "clang/Frontend/Analyses.def"
688      .Default(NumConstraints);
689    // FIXME: Error handling.
690    if (Value == NumConstraints)
691      Diags.Report(diag::err_drv_invalid_value)
692        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
693    else
694      Opts.AnalysisConstraintsOpt = Value;
695  }
696
697  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
698    llvm::StringRef Name = A->getValue(Args);
699    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
700#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
701      .Case(CMDFLAG, PD_##NAME)
702#include "clang/Frontend/Analyses.def"
703      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
704    // FIXME: Error handling.
705    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
706      Diags.Report(diag::err_drv_invalid_value)
707        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
708    else
709      Opts.AnalysisDiagOpt = Value;
710  }
711
712  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
713  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
714  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
715  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
716  Opts.AnalyzeNestedBlocks =
717    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
718  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
719  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
720  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
721  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
722  Opts.EnableExperimentalInternalChecks =
723    Args.hasArg(OPT_analyzer_experimental_internal_checks);
724  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
725}
726
727static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
728                             Diagnostic &Diags) {
729  using namespace cc1options;
730  // -Os implies -O2
731  if (Args.hasArg(OPT_Os))
732    Opts.OptimizationLevel = 2;
733  else {
734    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
735    if (Opts.OptimizationLevel > 3) {
736      Diags.Report(diag::err_drv_invalid_value)
737        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
738      Opts.OptimizationLevel = 3;
739    }
740  }
741
742  // We must always run at least the always inlining pass.
743  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
744    : CodeGenOptions::OnlyAlwaysInlining;
745
746  Opts.DebugInfo = Args.hasArg(OPT_g);
747  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
748  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
749  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
750  Opts.NoCommon = Args.hasArg(OPT_fno_common);
751  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
752  Opts.OptimizeSize = Args.hasArg(OPT_Os);
753  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
754
755  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
756  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
757  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
758  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
759  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
760  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
761  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
762  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
763  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
764  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
765
766  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
767
768  // FIXME: Put elsewhere?
769#ifdef NDEBUG
770  Opts.VerifyModule = 0;
771#else
772  Opts.VerifyModule = 1;
773#endif
774}
775
776static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
777                                      ArgList &Args) {
778  using namespace cc1options;
779  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
780  Opts.Targets = getAllArgValues(Args, OPT_MT);
781  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
782  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
783}
784
785static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
786                                Diagnostic &Diags) {
787  using namespace cc1options;
788  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
789  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
790  Opts.Pedantic = Args.hasArg(OPT_pedantic);
791  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
792  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
793  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
794  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
795  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
796  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
797  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
798  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
799  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
800  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
801  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
802  Opts.Warnings = getAllArgValues(Args, OPT_W);
803}
804
805static FrontendOptions::InputKind
806ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
807  using namespace cc1options;
808  Opts.ProgramAction = frontend::ParseSyntaxOnly;
809  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
810    switch (A->getOption().getID()) {
811    default:
812      assert(0 && "Invalid option in group!");
813    case OPT_ast_dump:
814      Opts.ProgramAction = frontend::ASTDump; break;
815    case OPT_ast_print:
816      Opts.ProgramAction = frontend::ASTPrint; break;
817    case OPT_ast_print_xml:
818      Opts.ProgramAction = frontend::ASTPrintXML; break;
819    case OPT_ast_view:
820      Opts.ProgramAction = frontend::ASTView; break;
821    case OPT_dump_raw_tokens:
822      Opts.ProgramAction = frontend::DumpRawTokens; break;
823    case OPT_dump_record_layouts:
824      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
825    case OPT_dump_tokens:
826      Opts.ProgramAction = frontend::DumpTokens; break;
827    case OPT_S:
828      Opts.ProgramAction = frontend::EmitAssembly; break;
829    case OPT_emit_llvm_bc:
830      Opts.ProgramAction = frontend::EmitBC; break;
831    case OPT_emit_html:
832      Opts.ProgramAction = frontend::EmitHTML; break;
833    case OPT_emit_llvm:
834      Opts.ProgramAction = frontend::EmitLLVM; break;
835    case OPT_emit_llvm_only:
836      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
837    case OPT_fixit:
838      Opts.ProgramAction = frontend::FixIt; break;
839    case OPT_emit_pch:
840      Opts.ProgramAction = frontend::GeneratePCH; break;
841    case OPT_emit_pth:
842      Opts.ProgramAction = frontend::GeneratePTH; break;
843    case OPT_parse_noop:
844      Opts.ProgramAction = frontend::ParseNoop; break;
845    case OPT_parse_print_callbacks:
846      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
847    case OPT_fsyntax_only:
848      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
849    case OPT_print_decl_contexts:
850      Opts.ProgramAction = frontend::PrintDeclContext; break;
851    case OPT_E:
852      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
853    case OPT_rewrite_blocks:
854      Opts.ProgramAction = frontend::RewriteBlocks; break;
855    case OPT_rewrite_macros:
856      Opts.ProgramAction = frontend::RewriteMacros; break;
857    case OPT_rewrite_objc:
858      Opts.ProgramAction = frontend::RewriteObjC; break;
859    case OPT_rewrite_test:
860      Opts.ProgramAction = frontend::RewriteTest; break;
861    case OPT_analyze:
862      Opts.ProgramAction = frontend::RunAnalysis; break;
863    case OPT_Eonly:
864      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
865    }
866  }
867  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
868    Opts.ProgramAction = frontend::PluginAction;
869    Opts.ActionName = A->getValue(Args);
870  }
871
872  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
873    Opts.CodeCompletionAt =
874      ParsedSourceLocation::FromString(A->getValue(Args));
875    if (Opts.CodeCompletionAt.FileName.empty())
876      Diags.Report(diag::err_drv_invalid_value)
877        << A->getAsString(Args) << A->getValue(Args);
878  }
879  Opts.DebugCodeCompletionPrinter =
880    !Args.hasArg(OPT_no_code_completion_debug_printer);
881  Opts.DisableFree = Args.hasArg(OPT_disable_free);
882  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
883
884  Opts.FixItLocations.clear();
885  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
886         ie = Args.filtered_end(); it != ie; ++it) {
887    const char *Loc = it->getValue(Args);
888    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
889
890    if (PSL.FileName.empty()) {
891      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
892      continue;
893    }
894
895    Opts.FixItLocations.push_back(PSL);
896  }
897
898  Opts.OutputFile = getLastArgValue(Args, OPT_o);
899  Opts.Plugins = getAllArgValues(Args, OPT_load);
900  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
901  Opts.ShowHelp = Args.hasArg(OPT_help);
902  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
903  Opts.ShowStats = Args.hasArg(OPT_print_stats);
904  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
905  Opts.ShowVersion = Args.hasArg(OPT_version);
906  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
907
908  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
909  if (const Arg *A = Args.getLastArg(OPT_x)) {
910    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
911      .Case("c", FrontendOptions::IK_C)
912      .Case("cl", FrontendOptions::IK_OpenCL)
913      .Case("c", FrontendOptions::IK_C)
914      .Case("cl", FrontendOptions::IK_OpenCL)
915      .Case("c++", FrontendOptions::IK_CXX)
916      .Case("objective-c", FrontendOptions::IK_ObjC)
917      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
918      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
919      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
920      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
921      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
922      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
923      .Case("c-header", FrontendOptions::IK_C)
924      .Case("objective-c-header", FrontendOptions::IK_ObjC)
925      .Case("c++-header", FrontendOptions::IK_CXX)
926      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
927      .Case("ast", FrontendOptions::IK_AST)
928      .Default(FrontendOptions::IK_None);
929    if (DashX == FrontendOptions::IK_None)
930      Diags.Report(diag::err_drv_invalid_value)
931        << A->getAsString(Args) << A->getValue(Args);
932  }
933
934  // '-' is the default input if none is given.
935  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
936  Opts.Inputs.clear();
937  if (Inputs.empty())
938    Inputs.push_back("-");
939  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
940    FrontendOptions::InputKind IK = DashX;
941    if (IK == FrontendOptions::IK_None) {
942      IK = FrontendOptions::getInputKindForExtension(
943        llvm::StringRef(Inputs[i]).rsplit('.').second);
944      // FIXME: Remove this hack.
945      if (i == 0)
946        DashX = IK;
947    }
948    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
949  }
950
951  return DashX;
952}
953
954static std::string GetBuiltinIncludePath(const char *Argv0,
955                                         void *MainAddr) {
956  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
957
958  if (!P.isEmpty()) {
959    P.eraseComponent();  // Remove /clang from foo/bin/clang
960    P.eraseComponent();  // Remove /bin   from foo/bin
961
962    // Get foo/lib/clang/<version>/include
963    P.appendComponent("lib");
964    P.appendComponent("clang");
965    P.appendComponent(CLANG_VERSION_STRING);
966    P.appendComponent("include");
967  }
968
969  return P.str();
970}
971
972static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
973                                  const char *Argv0, void *MainAddr) {
974  using namespace cc1options;
975  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
976  Opts.Verbose = Args.hasArg(OPT_v);
977  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
978  Opts.BuiltinIncludePath = "";
979  // FIXME: Add an option for this, its a slow call.
980  if (!Args.hasArg(OPT_nobuiltininc))
981    Opts.BuiltinIncludePath = GetBuiltinIncludePath(Argv0, MainAddr);
982
983  // Add -I... and -F... options in order.
984  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
985         ie = Args.filtered_end(); it != ie; ++it)
986    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
987                 /*IsFramework=*/ it->getOption().matches(OPT_F));
988
989  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
990  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
991  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
992                                             OPT_iwithprefixbefore),
993         ie = Args.filtered_end(); it != ie; ++it) {
994    if (it->getOption().matches(OPT_iprefix))
995      Prefix = it->getValue(Args);
996    else if (it->getOption().matches(OPT_iwithprefix))
997      Opts.AddPath(Prefix.str() + it->getValue(Args),
998                   frontend::System, false, false);
999    else
1000      Opts.AddPath(Prefix.str() + it->getValue(Args),
1001                   frontend::Angled, false, false);
1002  }
1003
1004  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1005         ie = Args.filtered_end(); it != ie; ++it)
1006    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1007  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1008         ie = Args.filtered_end(); it != ie; ++it)
1009    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1010  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1011         ie = Args.filtered_end(); it != ie; ++it)
1012    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1013
1014  // FIXME: Need options for the various environment variables!
1015}
1016
1017static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1018                          FrontendOptions::InputKind IK,
1019                          Diagnostic &Diags) {
1020  // FIXME: Cleanup per-file based stuff.
1021
1022  // Set some properties which depend soley on the input kind; it would be nice
1023  // to move these to the language standard, and have the driver resolve the
1024  // input kind + language standard.
1025  if (IK == FrontendOptions::IK_Asm) {
1026    Opts.AsmPreprocessor = 1;
1027  } else if (IK == FrontendOptions::IK_ObjC ||
1028             IK == FrontendOptions::IK_ObjCXX ||
1029             IK == FrontendOptions::IK_PreprocessedObjC ||
1030             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1031    Opts.ObjC1 = Opts.ObjC2 = 1;
1032  }
1033
1034  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1035  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1036    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1037#define LANGSTANDARD(id, name, desc, features) \
1038      .Case(name, LangStandard::lang_##id)
1039#include "clang/Frontend/LangStandards.def"
1040      .Default(LangStandard::lang_unspecified);
1041    if (LangStd == LangStandard::lang_unspecified)
1042      Diags.Report(diag::err_drv_invalid_value)
1043        << A->getAsString(Args) << A->getValue(Args);
1044  }
1045
1046  if (LangStd == LangStandard::lang_unspecified) {
1047    // Based on the base language, pick one.
1048    switch (IK) {
1049    case FrontendOptions::IK_None:
1050    case FrontendOptions::IK_AST:
1051      assert(0 && "Invalid input kind!");
1052    case FrontendOptions::IK_OpenCL:
1053      LangStd = LangStandard::lang_opencl;
1054      break;
1055    case FrontendOptions::IK_Asm:
1056    case FrontendOptions::IK_C:
1057    case FrontendOptions::IK_PreprocessedC:
1058    case FrontendOptions::IK_ObjC:
1059    case FrontendOptions::IK_PreprocessedObjC:
1060      LangStd = LangStandard::lang_gnu99;
1061      break;
1062    case FrontendOptions::IK_CXX:
1063    case FrontendOptions::IK_PreprocessedCXX:
1064    case FrontendOptions::IK_ObjCXX:
1065    case FrontendOptions::IK_PreprocessedObjCXX:
1066      LangStd = LangStandard::lang_gnucxx98;
1067      break;
1068    }
1069  }
1070
1071  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1072  Opts.BCPLComment = Std.hasBCPLComments();
1073  Opts.C99 = Std.isC99();
1074  Opts.CPlusPlus = Std.isCPlusPlus();
1075  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1076  Opts.Digraphs = Std.hasDigraphs();
1077  Opts.GNUMode = Std.isGNUMode();
1078  Opts.GNUInline = !Std.isC99();
1079  Opts.HexFloats = Std.hasHexFloats();
1080  Opts.ImplicitInt = Std.hasImplicitInt();
1081
1082  // OpenCL has some additional defaults.
1083  if (LangStd == LangStandard::lang_opencl) {
1084    Opts.OpenCL = 1;
1085    Opts.AltiVec = 1;
1086    Opts.CXXOperatorNames = 1;
1087    Opts.LaxVectorConversions = 1;
1088  }
1089
1090  // OpenCL and C++ both have bool, true, false keywords.
1091  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1092
1093  if (Opts.CPlusPlus)
1094    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1095
1096  if (Args.hasArg(OPT_fobjc_gc_only))
1097    Opts.setGCMode(LangOptions::GCOnly);
1098  else if (Args.hasArg(OPT_fobjc_gc))
1099    Opts.setGCMode(LangOptions::HybridGC);
1100
1101  if (Args.hasArg(OPT_print_ivar_layout))
1102    Opts.ObjCGCBitmapPrint = 1;
1103
1104  if (Args.hasArg(OPT_faltivec))
1105    Opts.AltiVec = 1;
1106
1107  if (Args.hasArg(OPT_pthread))
1108    Opts.POSIXThreads = 1;
1109
1110  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1111                                        "default");
1112  if (Vis == "default")
1113    Opts.setVisibilityMode(LangOptions::Default);
1114  else if (Vis == "hidden")
1115    Opts.setVisibilityMode(LangOptions::Hidden);
1116  else if (Vis == "protected")
1117    Opts.setVisibilityMode(LangOptions::Protected);
1118  else
1119    Diags.Report(diag::err_drv_invalid_value)
1120      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1121
1122  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1123
1124  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1125  // is specified, or -std is set to a conforming mode.
1126  Opts.Trigraphs = !Opts.GNUMode;
1127  if (Args.hasArg(OPT_trigraphs))
1128    Opts.Trigraphs = 1;
1129
1130  Opts.DollarIdents = !Opts.AsmPreprocessor;
1131  if (Args.hasArg(OPT_fdollars_in_identifiers))
1132    Opts.DollarIdents = 1;
1133
1134  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1135  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1136  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1137  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1138      Opts.LaxVectorConversions = 0;
1139  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1140  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1141  Opts.Blocks = Args.hasArg(OPT_fblocks);
1142  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1143  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1144  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1145  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1146  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1147  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1148  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1149  Opts.MathErrno = !Args.hasArg(OPT_fno_math_errno);
1150  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1151                                               Diags);
1152  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1153  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1154                                                 OPT_fconstant_string_class);
1155  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1156  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1157  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1158  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1159  Opts.Static = Args.hasArg(OPT_static_define);
1160  Opts.OptimizeSize = 0;
1161
1162  // FIXME: Eliminate this dependency.
1163  unsigned Opt =
1164    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1165  Opts.Optimize = Opt != 0;
1166
1167  // This is the __NO_INLINE__ define, which just depends on things like the
1168  // optimization level and -fno-inline, not actually whether the backend has
1169  // inlining enabled.
1170  //
1171  // FIXME: This is affected by other options (-fno-inline).
1172  Opts.NoInline = !Opt;
1173
1174  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1175  switch (SSP) {
1176  default:
1177    Diags.Report(diag::err_drv_invalid_value)
1178      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1179    break;
1180  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1181  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1182  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1183  }
1184}
1185
1186static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1187                                  Diagnostic &Diags) {
1188  using namespace cc1options;
1189  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1190  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1191  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1192      Opts.TokenCache = A->getValue(Args);
1193  else
1194    Opts.TokenCache = Opts.ImplicitPTHInclude;
1195  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1196
1197  // Add macros from the command line.
1198  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1199         ie = Args.filtered_end(); it != ie; ++it) {
1200    if (it->getOption().matches(OPT_D))
1201      Opts.addMacroDef(it->getValue(Args));
1202    else
1203      Opts.addMacroUndef(it->getValue(Args));
1204  }
1205
1206  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1207
1208  // Add the ordered list of -includes.
1209  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1210                                             OPT_include_pth),
1211         ie = Args.filtered_end(); it != ie; ++it) {
1212    // PCH is handled specially, we need to extra the original include path.
1213    if (it->getOption().matches(OPT_include_pch)) {
1214      std::string OriginalFile =
1215        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1216      if (OriginalFile.empty())
1217        continue;
1218
1219      Opts.Includes.push_back(OriginalFile);
1220    } else
1221      Opts.Includes.push_back(it->getValue(Args));
1222  }
1223
1224  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1225         ie = Args.filtered_end(); it != ie; ++it) {
1226    std::pair<llvm::StringRef,llvm::StringRef> Split =
1227      llvm::StringRef(it->getValue(Args)).split(';');
1228
1229    if (Split.second.empty()) {
1230      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1231      continue;
1232    }
1233
1234    Opts.addRemappedFile(Split.first, Split.second);
1235  }
1236}
1237
1238static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1239                                        ArgList &Args) {
1240  using namespace cc1options;
1241  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1242  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1243  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1244  Opts.ShowComments = Args.hasArg(OPT_C);
1245  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1246}
1247
1248static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1249  using namespace cc1options;
1250  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1251  Opts.CPU = getLastArgValue(Args, OPT_mcpu);
1252  Opts.Triple = getLastArgValue(Args, OPT_triple);
1253  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1254
1255  // Use the host triple if unspecified.
1256  if (Opts.Triple.empty())
1257    Opts.Triple = llvm::sys::getHostTriple();
1258}
1259
1260//
1261
1262void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1263                                        const char **ArgBegin,
1264                                        const char **ArgEnd,
1265                                        const char *Argv0,
1266                                        void *MainAddr,
1267                                        Diagnostic &Diags) {
1268  // Parse the arguments.
1269  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1270  unsigned MissingArgIndex, MissingArgCount;
1271  llvm::OwningPtr<InputArgList> Args(
1272    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1273
1274  // Check for missing argument error.
1275  if (MissingArgCount)
1276    Diags.Report(diag::err_drv_missing_argument)
1277      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1278
1279  // Issue errors on unknown arguments.
1280  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1281         ie = Args->filtered_end(); it != ie; ++it)
1282    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1283
1284  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1285  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1286  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1287  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1288  FrontendOptions::InputKind DashX =
1289    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1290  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args,
1291                        Argv0, MainAddr);
1292  if (DashX != FrontendOptions::IK_AST)
1293    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1294  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1295  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1296  ParseTargetArgs(Res.getTargetOpts(), *Args);
1297}
1298