CompilerInvocation.cpp revision 206084 
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.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  // VerifyModule is only derived.
149  // Inlining is only derived.
150
151  if (Opts.AsmVerbose)
152    Res.push_back("-masm-verbose");
153  if (!Opts.CodeModel.empty()) {
154    Res.push_back("-mcode-model");
155    Res.push_back(Opts.CodeModel);
156  }
157  if (!Opts.CXAAtExit)
158    Res.push_back("-fno-use-cxa-atexit");
159  if (Opts.CXXCtorDtorAliases)
160    Res.push_back("-mconstructor-aliases");
161  if (!Opts.DebugPass.empty()) {
162    Res.push_back("-mdebug-pass");
163    Res.push_back(Opts.DebugPass);
164  }
165  if (Opts.DisableFPElim)
166    Res.push_back("-mdisable-fp-elim");
167  if (!Opts.FloatABI.empty()) {
168    Res.push_back("-mfloat-abi");
169    Res.push_back(Opts.FloatABI);
170  }
171  if (!Opts.LimitFloatPrecision.empty()) {
172    Res.push_back("-mlimit-float-precision");
173    Res.push_back(Opts.LimitFloatPrecision);
174  }
175  if (Opts.NoZeroInitializedInBSS)
176    Res.push_back("-mno-zero-initialized-bss");
177  if (Opts.ObjCLegacyDispatch)
178    Res.push_back("-fobjc-legacy-dispatch");
179  if (Opts.SoftFloat)
180    Res.push_back("-msoft-float");
181  if (Opts.UnwindTables)
182    Res.push_back("-munwind-tables");
183  if (Opts.RelocationModel != "pic") {
184    Res.push_back("-mrelocation-model");
185    Res.push_back(Opts.RelocationModel);
186  }
187  if (!Opts.VerifyModule)
188    Res.push_back("-disable-llvm-verifier");
189}
190
191static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
192                                       std::vector<std::string> &Res) {
193  if (Opts.IncludeSystemHeaders)
194    Res.push_back("-sys-header-deps");
195  if (Opts.UsePhonyTargets)
196    Res.push_back("-MP");
197  if (!Opts.OutputFile.empty()) {
198    Res.push_back("-dependency-file");
199    Res.push_back(Opts.OutputFile);
200  }
201  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
202    Res.push_back("-MT");
203    Res.push_back(Opts.Targets[i]);
204  }
205}
206
207static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
208                                 std::vector<std::string> &Res) {
209  if (Opts.IgnoreWarnings)
210    Res.push_back("-w");
211  if (Opts.NoRewriteMacros)
212    Res.push_back("-Wno-rewrite-macros");
213  if (Opts.Pedantic)
214    Res.push_back("-pedantic");
215  if (Opts.PedanticErrors)
216    Res.push_back("-pedantic-errors");
217  if (!Opts.ShowColumn)
218    Res.push_back("-fno-show-column");
219  if (!Opts.ShowLocation)
220    Res.push_back("-fno-show-source-location");
221  if (!Opts.ShowCarets)
222    Res.push_back("-fno-caret-diagnostics");
223  if (!Opts.ShowFixits)
224    Res.push_back("-fno-diagnostics-fixit-info");
225  if (Opts.ShowSourceRanges)
226    Res.push_back("-fdiagnostics-print-source-range-info");
227  if (Opts.ShowColors)
228    Res.push_back("-fcolor-diagnostics");
229  if (Opts.VerifyDiagnostics)
230    Res.push_back("-verify");
231  if (Opts.BinaryOutput)
232    Res.push_back("-fdiagnostics-binary");
233  if (Opts.ShowOptionNames)
234    Res.push_back("-fdiagnostics-show-option");
235  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
236    Res.push_back("-ftabstop");
237    Res.push_back(llvm::utostr(Opts.TabStop));
238  }
239  if (Opts.MessageLength) {
240    Res.push_back("-fmessage-length");
241    Res.push_back(llvm::utostr(Opts.MessageLength));
242  }
243  if (!Opts.DumpBuildInformation.empty()) {
244    Res.push_back("-dump-build-information");
245    Res.push_back(Opts.DumpBuildInformation);
246  }
247  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
248    Res.push_back("-W" + Opts.Warnings[i]);
249}
250
251static const char *getInputKindName(FrontendOptions::InputKind Kind) {
252  switch (Kind) {
253  case FrontendOptions::IK_None:              break;
254  case FrontendOptions::IK_AST:               return "ast";
255  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
256  case FrontendOptions::IK_C:                 return "c";
257  case FrontendOptions::IK_CXX:               return "c++";
258  case FrontendOptions::IK_ObjC:              return "objective-c";
259  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
260  case FrontendOptions::IK_OpenCL:            return "cl";
261  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
262  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
263  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
264  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
265  }
266
267  llvm_unreachable("Unexpected language kind!");
268  return 0;
269}
270
271static const char *getActionName(frontend::ActionKind Kind) {
272  switch (Kind) {
273  case frontend::PluginAction:
274  case frontend::InheritanceView:
275    llvm_unreachable("Invalid kind!");
276
277  case frontend::ASTDump:                return "-ast-dump";
278  case frontend::ASTPrint:               return "-ast-print";
279  case frontend::ASTPrintXML:            return "-ast-print-xml";
280  case frontend::ASTView:                return "-ast-view";
281  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
282  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
283  case frontend::DumpTokens:             return "-dump-tokens";
284  case frontend::EmitAssembly:           return "-S";
285  case frontend::EmitBC:                 return "-emit-llvm-bc";
286  case frontend::EmitHTML:               return "-emit-html";
287  case frontend::EmitLLVM:               return "-emit-llvm";
288  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
289  case frontend::EmitObj:                return "-emit-obj";
290  case frontend::FixIt:                  return "-fixit";
291  case frontend::GeneratePCH:            return "-emit-pch";
292  case frontend::GeneratePTH:            return "-emit-pth";
293  case frontend::InitOnly:               return "-init-only";
294  case frontend::ParseNoop:              return "-parse-noop";
295  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
296  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
297  case frontend::PrintDeclContext:       return "-print-decl-contexts";
298  case frontend::PrintPreprocessedInput: return "-E";
299  case frontend::RewriteMacros:          return "-rewrite-macros";
300  case frontend::RewriteObjC:            return "-rewrite-objc";
301  case frontend::RewriteTest:            return "-rewrite-test";
302  case frontend::RunAnalysis:            return "-analyze";
303  case frontend::RunPreprocessorOnly:    return "-Eonly";
304  }
305
306  llvm_unreachable("Unexpected language kind!");
307  return 0;
308}
309
310static void FrontendOptsToArgs(const FrontendOptions &Opts,
311                               std::vector<std::string> &Res) {
312  if (!Opts.DebugCodeCompletionPrinter)
313    Res.push_back("-no-code-completion-debug-printer");
314  if (Opts.DisableFree)
315    Res.push_back("-disable-free");
316  if (Opts.RelocatablePCH)
317    Res.push_back("-relocatable-pch");
318  if (Opts.ShowHelp)
319    Res.push_back("-help");
320  if (Opts.ShowMacrosInCodeCompletion)
321    Res.push_back("-code-completion-macros");
322  if (Opts.ShowStats)
323    Res.push_back("-print-stats");
324  if (Opts.ShowTimers)
325    Res.push_back("-ftime-report");
326  if (Opts.ShowVersion)
327    Res.push_back("-version");
328
329  bool NeedLang = false;
330  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
331    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
332        Opts.Inputs[i].first)
333      NeedLang = true;
334  if (NeedLang) {
335    Res.push_back("-x");
336    Res.push_back(getInputKindName(Opts.Inputs[0].first));
337  }
338  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
339    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
340           "Unable to represent this input vector!");
341    Res.push_back(Opts.Inputs[i].second);
342  }
343
344  if (!Opts.OutputFile.empty()) {
345    Res.push_back("-o");
346    Res.push_back(Opts.OutputFile);
347  }
348  if (!Opts.ViewClassInheritance.empty()) {
349    Res.push_back("-cxx-inheritance-view");
350    Res.push_back(Opts.ViewClassInheritance);
351  }
352  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
353    Res.push_back("-fixit-at");
354    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
355                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
356                  llvm::utostr(Opts.FixItLocations[i].Column));
357  }
358  if (!Opts.CodeCompletionAt.FileName.empty()) {
359    Res.push_back("-code-completion-at");
360    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
361                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
362                  llvm::utostr(Opts.CodeCompletionAt.Column));
363  }
364  if (Opts.ProgramAction != frontend::InheritanceView &&
365      Opts.ProgramAction != frontend::PluginAction)
366    Res.push_back(getActionName(Opts.ProgramAction));
367  if (!Opts.ActionName.empty()) {
368    Res.push_back("-plugin");
369    Res.push_back(Opts.ActionName);
370  }
371  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
372    Res.push_back("-load");
373    Res.push_back(Opts.Plugins[i]);
374  }
375  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
376    Res.push_back("-ast-merge");
377    Res.push_back(Opts.ASTMergeFiles[i]);
378  }
379}
380
381static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
382                                   std::vector<std::string> &Res) {
383  if (Opts.Sysroot != "/") {
384    Res.push_back("-isysroot");
385    Res.push_back(Opts.Sysroot);
386  }
387
388  /// User specified include entries.
389  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
390    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
391    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
392      llvm::llvm_report_error("Invalid option set!");
393    if (E.IsUserSupplied) {
394      if (E.Group == frontend::After) {
395        Res.push_back("-idirafter");
396      } else if (E.Group == frontend::Quoted) {
397        Res.push_back("-iquote");
398      } else if (E.Group == frontend::System) {
399        Res.push_back("-isystem");
400      } else {
401        assert(E.Group == frontend::Angled && "Invalid group!");
402        Res.push_back(E.IsFramework ? "-F" : "-I");
403      }
404    } else {
405      if (E.Group != frontend::Angled && E.Group != frontend::System)
406        llvm::llvm_report_error("Invalid option set!");
407      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
408                    "-iwithprefix");
409    }
410    Res.push_back(E.Path);
411  }
412
413  if (!Opts.EnvIncPath.empty()) {
414    // FIXME: Provide an option for this, and move env detection to driver.
415    llvm::llvm_report_error("Not yet implemented!");
416  }
417  if (!Opts.CEnvIncPath.empty()) {
418    // FIXME: Provide an option for this, and move env detection to driver.
419    llvm::llvm_report_error("Not yet implemented!");
420  }
421  if (!Opts.ObjCEnvIncPath.empty()) {
422    // FIXME: Provide an option for this, and move env detection to driver.
423    llvm::llvm_report_error("Not yet implemented!");
424  }
425  if (!Opts.CXXEnvIncPath.empty()) {
426    // FIXME: Provide an option for this, and move env detection to driver.
427    llvm::llvm_report_error("Not yet implemented!");
428  }
429  if (!Opts.ObjCXXEnvIncPath.empty()) {
430    // FIXME: Provide an option for this, and move env detection to driver.
431    llvm::llvm_report_error("Not yet implemented!");
432  }
433  if (!Opts.ResourceDir.empty()) {
434    Res.push_back("-resource-dir");
435    Res.push_back(Opts.ResourceDir);
436  }
437  if (!Opts.UseStandardIncludes)
438    Res.push_back("-nostdinc");
439  if (!Opts.UseStandardCXXIncludes)
440    Res.push_back("-nostdinc++");
441  if (Opts.Verbose)
442    Res.push_back("-v");
443}
444
445static void LangOptsToArgs(const LangOptions &Opts,
446                           std::vector<std::string> &Res) {
447  LangOptions DefaultLangOpts;
448
449  // FIXME: Need to set -std to get all the implicit options.
450
451  // FIXME: We want to only pass options relative to the defaults, which
452  // requires constructing a target. :(
453  //
454  // It would be better to push the all target specific choices into the driver,
455  // so that everything below that was more uniform.
456
457  if (Opts.Trigraphs)
458    Res.push_back("-trigraphs");
459  // Implicit based on the input kind:
460  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
461  // Implicit based on the input language standard:
462  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
463  if (Opts.DollarIdents)
464    Res.push_back("-fdollars-in-identifiers");
465  if (Opts.Microsoft)
466    Res.push_back("-fms-extensions");
467  if (Opts.ObjCNonFragileABI)
468    Res.push_back("-fobjc-nonfragile-abi");
469  if (Opts.ObjCNonFragileABI2)
470    Res.push_back("-fobjc-nonfragile-abi2");
471  // NoInline is implicit.
472  if (!Opts.CXXOperatorNames)
473    Res.push_back("-fno-operator-names");
474  if (Opts.PascalStrings)
475    Res.push_back("-fpascal-strings");
476  if (Opts.CatchUndefined)
477    Res.push_back("-fcatch-undefined-behavior");
478  if (Opts.WritableStrings)
479    Res.push_back("-fwritable-strings");
480  if (Opts.ConstStrings)
481    Res.push_back("-Wwrite-strings");
482  if (!Opts.LaxVectorConversions)
483    Res.push_back("-fno-lax-vector-conversions");
484  if (Opts.AltiVec)
485    Res.push_back("-faltivec");
486  if (Opts.Exceptions)
487    Res.push_back("-fexceptions");
488  if (Opts.SjLjExceptions)
489    Res.push_back("-fsjlj-exceptions");
490  if (!Opts.RTTI)
491    Res.push_back("-fno-rtti");
492  if (!Opts.NeXTRuntime)
493    Res.push_back("-fgnu-runtime");
494  if (Opts.Freestanding)
495    Res.push_back("-ffreestanding");
496  if (Opts.NoBuiltin)
497    Res.push_back("-fno-builtin");
498  if (!Opts.AssumeSaneOperatorNew)
499    Res.push_back("-fno-assume-sane-operator-new");
500  if (!Opts.ThreadsafeStatics)
501    Res.push_back("-fno-threadsafe-statics");
502  if (Opts.POSIXThreads)
503    Res.push_back("-pthread");
504  if (Opts.Blocks)
505    Res.push_back("-fblocks");
506  if (Opts.EmitAllDecls)
507    Res.push_back("-femit-all-decls");
508  if (Opts.MathErrno)
509    Res.push_back("-fmath-errno");
510  if (Opts.OverflowChecking)
511    Res.push_back("-ftrapv");
512  if (Opts.HeinousExtensions)
513    Res.push_back("-fheinous-gnu-extensions");
514  // Optimize is implicit.
515  // OptimizeSize is implicit.
516  if (Opts.Static)
517    Res.push_back("-static-define");
518  if (Opts.PICLevel) {
519    Res.push_back("-pic-level");
520    Res.push_back(llvm::utostr(Opts.PICLevel));
521  }
522  if (Opts.ObjCGCBitmapPrint)
523    Res.push_back("-print-ivar-layout");
524  // FIXME: Don't forget to update when the default changes!
525  if (Opts.AccessControl)
526    Res.push_back("-faccess-control");
527  if (!Opts.CharIsSigned)
528    Res.push_back("-fno-signed-char");
529  if (Opts.ShortWChar)
530    Res.push_back("-fshort-wchar");
531  if (!Opts.ElideConstructors)
532    Res.push_back("-fno-elide-constructors");
533  if (Opts.getGCMode() != LangOptions::NonGC) {
534    if (Opts.getGCMode() == LangOptions::HybridGC) {
535      Res.push_back("-fobjc-gc");
536    } else {
537      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
538      Res.push_back("-fobjc-gc-only");
539    }
540  }
541  if (Opts.getVisibilityMode() != LangOptions::Default) {
542    Res.push_back("-fvisibility");
543    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
544      Res.push_back("hidden");
545    } else {
546      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
547             "Invalid visibility!");
548      Res.push_back("protected");
549    }
550  }
551  if (Opts.getStackProtectorMode() != 0) {
552    Res.push_back("-stack-protector");
553    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
554  }
555  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
556    Res.push_back("-ftemplate-depth");
557    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
558  }
559  if (!Opts.ObjCConstantStringClass.empty()) {
560    Res.push_back("-fconstant-string-class");
561    Res.push_back(Opts.ObjCConstantStringClass);
562  }
563}
564
565static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
566                                   std::vector<std::string> &Res) {
567  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
568    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
569                  Opts.Macros[i].first);
570  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
571    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
572    Res.push_back("-include");
573    Res.push_back(Opts.Includes[i]);
574  }
575  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
576    Res.push_back("-imacros");
577    Res.push_back(Opts.MacroIncludes[i]);
578  }
579  if (!Opts.UsePredefines)
580    Res.push_back("-undef");
581  if (Opts.DetailedRecord)
582    Res.push_back("-detailed-preprocessing-record");
583  if (!Opts.ImplicitPCHInclude.empty()) {
584    Res.push_back("-include-pch");
585    Res.push_back(Opts.ImplicitPCHInclude);
586  }
587  if (!Opts.ImplicitPTHInclude.empty()) {
588    Res.push_back("-include-pth");
589    Res.push_back(Opts.ImplicitPTHInclude);
590  }
591  if (!Opts.TokenCache.empty()) {
592    if (Opts.ImplicitPTHInclude.empty()) {
593      Res.push_back("-token-cache");
594      Res.push_back(Opts.TokenCache);
595    } else
596      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
597             "Unsupported option combination!");
598  }
599  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
600    Res.push_back("-remap-file");
601    Res.push_back(Opts.RemappedFiles[i].first + ";" +
602                  Opts.RemappedFiles[i].second);
603  }
604}
605
606static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
607                                         std::vector<std::string> &Res) {
608  if (!Opts.ShowCPP && !Opts.ShowMacros)
609    llvm::llvm_report_error("Invalid option combination!");
610
611  if (Opts.ShowCPP && Opts.ShowMacros)
612    Res.push_back("-dD");
613  else if (!Opts.ShowCPP && Opts.ShowMacros)
614    Res.push_back("-dM");
615
616  if (!Opts.ShowLineMarkers)
617    Res.push_back("-P");
618  if (Opts.ShowComments)
619    Res.push_back("-C");
620  if (Opts.ShowMacroComments)
621    Res.push_back("-CC");
622}
623
624static void TargetOptsToArgs(const TargetOptions &Opts,
625                             std::vector<std::string> &Res) {
626  Res.push_back("-triple");
627  Res.push_back(Opts.Triple);
628  if (!Opts.CPU.empty()) {
629    Res.push_back("-target-cpu");
630    Res.push_back(Opts.CPU);
631  }
632  if (!Opts.ABI.empty()) {
633    Res.push_back("-target-abi");
634    Res.push_back(Opts.ABI);
635  }
636  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
637    Res.push_back("-target-feature");
638    Res.push_back(Opts.Features[i]);
639  }
640}
641
642void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
643  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
644  CodeGenOptsToArgs(getCodeGenOpts(), Res);
645  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
646  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
647  FrontendOptsToArgs(getFrontendOpts(), Res);
648  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
649  LangOptsToArgs(getLangOpts(), Res);
650  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
651  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
652  TargetOptsToArgs(getTargetOpts(), Res);
653}
654
655//===----------------------------------------------------------------------===//
656// Deserialization (to args)
657//===----------------------------------------------------------------------===//
658
659using namespace clang::driver;
660using namespace clang::driver::cc1options;
661
662static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
663                                       llvm::StringRef Default = "") {
664  if (Arg *A = Args.getLastArg(ID))
665    return A->getValue(Args);
666  return Default;
667}
668
669static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
670                              int Default, Diagnostic &Diags) {
671  Arg *A = Args.getLastArg(ID);
672  if (!A)
673    return Default;
674
675  int Res = Default;
676  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
677    Diags.Report(diag::err_drv_invalid_int_value)
678        << A->getAsString(Args) << A->getValue(Args);
679
680  return Res;
681}
682
683static std::vector<std::string>
684getAllArgValues(ArgList &Args, cc1options::ID ID) {
685  llvm::SmallVector<const char *, 16> Values;
686  Args.AddAllArgValues(Values, ID);
687  return std::vector<std::string>(Values.begin(), Values.end());
688}
689
690//
691
692static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
693                              Diagnostic &Diags) {
694  using namespace cc1options;
695
696  Opts.AnalysisList.clear();
697#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
698  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
699#include "clang/Frontend/Analyses.def"
700
701  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
702    llvm::StringRef Name = A->getValue(Args);
703    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
704#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
705      .Case(CMDFLAG, NAME##Model)
706#include "clang/Frontend/Analyses.def"
707      .Default(NumStores);
708    // FIXME: Error handling.
709    if (Value == NumStores)
710      Diags.Report(diag::err_drv_invalid_value)
711        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
712    else
713      Opts.AnalysisStoreOpt = Value;
714  }
715
716  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
717    llvm::StringRef Name = A->getValue(Args);
718    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
719#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
720      .Case(CMDFLAG, NAME##Model)
721#include "clang/Frontend/Analyses.def"
722      .Default(NumConstraints);
723    // FIXME: Error handling.
724    if (Value == NumConstraints)
725      Diags.Report(diag::err_drv_invalid_value)
726        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
727    else
728      Opts.AnalysisConstraintsOpt = Value;
729  }
730
731  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
732    llvm::StringRef Name = A->getValue(Args);
733    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
734#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
735      .Case(CMDFLAG, PD_##NAME)
736#include "clang/Frontend/Analyses.def"
737      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
738    // FIXME: Error handling.
739    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
740      Diags.Report(diag::err_drv_invalid_value)
741        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
742    else
743      Opts.AnalysisDiagOpt = Value;
744  }
745
746  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
747  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
748  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
749  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
750  Opts.AnalyzeNestedBlocks =
751    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
752  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
753  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
754  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
755  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
756  Opts.EnableExperimentalInternalChecks =
757    Args.hasArg(OPT_analyzer_experimental_internal_checks);
758  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
759}
760
761static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
762                             Diagnostic &Diags) {
763  using namespace cc1options;
764  // -Os implies -O2
765  if (Args.hasArg(OPT_Os))
766    Opts.OptimizationLevel = 2;
767  else {
768    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
769    if (Opts.OptimizationLevel > 3) {
770      Diags.Report(diag::err_drv_invalid_value)
771        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
772      Opts.OptimizationLevel = 3;
773    }
774  }
775
776  // We must always run at least the always inlining pass.
777  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
778    : CodeGenOptions::OnlyAlwaysInlining;
779
780  Opts.DebugInfo = Args.hasArg(OPT_g);
781  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
782  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
783  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
784  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
785  Opts.NoCommon = Args.hasArg(OPT_fno_common);
786  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
787  Opts.OptimizeSize = Args.hasArg(OPT_Os);
788  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
789
790  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
791  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
792  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
793  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
794  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
795  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
796  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
797  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
798  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
799  Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
800  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
801  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
802  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
803
804  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
805  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
806}
807
808static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
809                                      ArgList &Args) {
810  using namespace cc1options;
811  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
812  Opts.Targets = getAllArgValues(Args, OPT_MT);
813  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
814  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
815}
816
817static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
818                                Diagnostic &Diags) {
819  using namespace cc1options;
820  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
821  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
822  Opts.Pedantic = Args.hasArg(OPT_pedantic);
823  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
824  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
825  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
826  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
827  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
828  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
829  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
830  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
831  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
832  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
833  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
834                                    DiagnosticOptions::DefaultTabStop, Diags);
835  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
836    Diags.Report(diag::warn_ignoring_ftabstop_value)
837      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
838    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
839  }
840  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
841  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
842  Opts.Warnings = getAllArgValues(Args, OPT_W);
843}
844
845static FrontendOptions::InputKind
846ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
847  using namespace cc1options;
848  Opts.ProgramAction = frontend::ParseSyntaxOnly;
849  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
850    switch (A->getOption().getID()) {
851    default:
852      assert(0 && "Invalid option in group!");
853    case OPT_ast_dump:
854      Opts.ProgramAction = frontend::ASTDump; break;
855    case OPT_ast_print:
856      Opts.ProgramAction = frontend::ASTPrint; break;
857    case OPT_ast_print_xml:
858      Opts.ProgramAction = frontend::ASTPrintXML; break;
859    case OPT_ast_view:
860      Opts.ProgramAction = frontend::ASTView; break;
861    case OPT_dump_raw_tokens:
862      Opts.ProgramAction = frontend::DumpRawTokens; break;
863    case OPT_dump_record_layouts:
864      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
865    case OPT_dump_tokens:
866      Opts.ProgramAction = frontend::DumpTokens; break;
867    case OPT_S:
868      Opts.ProgramAction = frontend::EmitAssembly; break;
869    case OPT_emit_llvm_bc:
870      Opts.ProgramAction = frontend::EmitBC; break;
871    case OPT_emit_html:
872      Opts.ProgramAction = frontend::EmitHTML; break;
873    case OPT_emit_llvm:
874      Opts.ProgramAction = frontend::EmitLLVM; break;
875    case OPT_emit_llvm_only:
876      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
877    case OPT_emit_obj:
878      Opts.ProgramAction = frontend::EmitObj; break;
879    case OPT_fixit:
880      Opts.ProgramAction = frontend::FixIt; break;
881    case OPT_emit_pch:
882      Opts.ProgramAction = frontend::GeneratePCH; break;
883    case OPT_emit_pth:
884      Opts.ProgramAction = frontend::GeneratePTH; break;
885    case OPT_init_only:
886      Opts.ProgramAction = frontend::InitOnly; break;
887    case OPT_parse_noop:
888      Opts.ProgramAction = frontend::ParseNoop; break;
889    case OPT_parse_print_callbacks:
890      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
891    case OPT_fsyntax_only:
892      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
893    case OPT_print_decl_contexts:
894      Opts.ProgramAction = frontend::PrintDeclContext; break;
895    case OPT_E:
896      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
897    case OPT_rewrite_macros:
898      Opts.ProgramAction = frontend::RewriteMacros; break;
899    case OPT_rewrite_objc:
900      Opts.ProgramAction = frontend::RewriteObjC; break;
901    case OPT_rewrite_test:
902      Opts.ProgramAction = frontend::RewriteTest; break;
903    case OPT_analyze:
904      Opts.ProgramAction = frontend::RunAnalysis; break;
905    case OPT_Eonly:
906      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
907    }
908  }
909  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
910    Opts.ProgramAction = frontend::PluginAction;
911    Opts.ActionName = A->getValue(Args);
912  }
913
914  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
915    Opts.CodeCompletionAt =
916      ParsedSourceLocation::FromString(A->getValue(Args));
917    if (Opts.CodeCompletionAt.FileName.empty())
918      Diags.Report(diag::err_drv_invalid_value)
919        << A->getAsString(Args) << A->getValue(Args);
920  }
921  Opts.DebugCodeCompletionPrinter =
922    !Args.hasArg(OPT_no_code_completion_debug_printer);
923  Opts.DisableFree = Args.hasArg(OPT_disable_free);
924
925  Opts.FixItLocations.clear();
926  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
927         ie = Args.filtered_end(); it != ie; ++it) {
928    const char *Loc = it->getValue(Args);
929    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
930
931    if (PSL.FileName.empty()) {
932      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
933      continue;
934    }
935
936    Opts.FixItLocations.push_back(PSL);
937  }
938
939  Opts.OutputFile = getLastArgValue(Args, OPT_o);
940  Opts.Plugins = getAllArgValues(Args, OPT_load);
941  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
942  Opts.ShowHelp = Args.hasArg(OPT_help);
943  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
944  Opts.ShowStats = Args.hasArg(OPT_print_stats);
945  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
946  Opts.ShowVersion = Args.hasArg(OPT_version);
947  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
948  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
949
950  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
951  if (const Arg *A = Args.getLastArg(OPT_x)) {
952    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
953      .Case("c", FrontendOptions::IK_C)
954      .Case("cl", FrontendOptions::IK_OpenCL)
955      .Case("c", FrontendOptions::IK_C)
956      .Case("cl", FrontendOptions::IK_OpenCL)
957      .Case("c++", FrontendOptions::IK_CXX)
958      .Case("objective-c", FrontendOptions::IK_ObjC)
959      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
960      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
961      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
962      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
963      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
964      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
965      .Case("c-header", FrontendOptions::IK_C)
966      .Case("objective-c-header", FrontendOptions::IK_ObjC)
967      .Case("c++-header", FrontendOptions::IK_CXX)
968      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
969      .Case("ast", FrontendOptions::IK_AST)
970      .Default(FrontendOptions::IK_None);
971    if (DashX == FrontendOptions::IK_None)
972      Diags.Report(diag::err_drv_invalid_value)
973        << A->getAsString(Args) << A->getValue(Args);
974  }
975
976  // '-' is the default input if none is given.
977  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
978  Opts.Inputs.clear();
979  if (Inputs.empty())
980    Inputs.push_back("-");
981  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
982    FrontendOptions::InputKind IK = DashX;
983    if (IK == FrontendOptions::IK_None) {
984      IK = FrontendOptions::getInputKindForExtension(
985        llvm::StringRef(Inputs[i]).rsplit('.').second);
986      // FIXME: Remove this hack.
987      if (i == 0)
988        DashX = IK;
989    }
990    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
991  }
992
993  return DashX;
994}
995
996std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
997                                                 void *MainAddr) {
998  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
999
1000  if (!P.isEmpty()) {
1001    P.eraseComponent();  // Remove /clang from foo/bin/clang
1002    P.eraseComponent();  // Remove /bin   from foo/bin
1003
1004    // Get foo/lib/clang/<version>/include
1005    P.appendComponent("lib");
1006    P.appendComponent("clang");
1007    P.appendComponent(CLANG_VERSION_STRING);
1008  }
1009
1010  return P.str();
1011}
1012
1013static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1014  using namespace cc1options;
1015  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1016  Opts.Verbose = Args.hasArg(OPT_v);
1017  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1018  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1019  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1020  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1021
1022  // Add -I... and -F... options in order.
1023  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1024         ie = Args.filtered_end(); it != ie; ++it)
1025    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1026                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1027
1028  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1029  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1030  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1031                                             OPT_iwithprefixbefore),
1032         ie = Args.filtered_end(); it != ie; ++it) {
1033    if (it->getOption().matches(OPT_iprefix))
1034      Prefix = it->getValue(Args);
1035    else if (it->getOption().matches(OPT_iwithprefix))
1036      Opts.AddPath(Prefix.str() + it->getValue(Args),
1037                   frontend::System, false, false);
1038    else
1039      Opts.AddPath(Prefix.str() + it->getValue(Args),
1040                   frontend::Angled, false, false);
1041  }
1042
1043  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1044         ie = Args.filtered_end(); it != ie; ++it)
1045    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1046  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1047         ie = Args.filtered_end(); it != ie; ++it)
1048    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1049  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1050         ie = Args.filtered_end(); it != ie; ++it)
1051    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1052
1053  // FIXME: Need options for the various environment variables!
1054}
1055
1056static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1057                          FrontendOptions::InputKind IK,
1058                          Diagnostic &Diags) {
1059  // FIXME: Cleanup per-file based stuff.
1060
1061  // Set some properties which depend soley on the input kind; it would be nice
1062  // to move these to the language standard, and have the driver resolve the
1063  // input kind + language standard.
1064  if (IK == FrontendOptions::IK_Asm) {
1065    Opts.AsmPreprocessor = 1;
1066  } else if (IK == FrontendOptions::IK_ObjC ||
1067             IK == FrontendOptions::IK_ObjCXX ||
1068             IK == FrontendOptions::IK_PreprocessedObjC ||
1069             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1070    Opts.ObjC1 = Opts.ObjC2 = 1;
1071  }
1072
1073  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1074  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1075    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1076#define LANGSTANDARD(id, name, desc, features) \
1077      .Case(name, LangStandard::lang_##id)
1078#include "clang/Frontend/LangStandards.def"
1079      .Default(LangStandard::lang_unspecified);
1080    if (LangStd == LangStandard::lang_unspecified)
1081      Diags.Report(diag::err_drv_invalid_value)
1082        << A->getAsString(Args) << A->getValue(Args);
1083  }
1084
1085  if (LangStd == LangStandard::lang_unspecified) {
1086    // Based on the base language, pick one.
1087    switch (IK) {
1088    case FrontendOptions::IK_None:
1089    case FrontendOptions::IK_AST:
1090      assert(0 && "Invalid input kind!");
1091    case FrontendOptions::IK_OpenCL:
1092      LangStd = LangStandard::lang_opencl;
1093      break;
1094    case FrontendOptions::IK_Asm:
1095    case FrontendOptions::IK_C:
1096    case FrontendOptions::IK_PreprocessedC:
1097    case FrontendOptions::IK_ObjC:
1098    case FrontendOptions::IK_PreprocessedObjC:
1099      LangStd = LangStandard::lang_gnu99;
1100      break;
1101    case FrontendOptions::IK_CXX:
1102    case FrontendOptions::IK_PreprocessedCXX:
1103    case FrontendOptions::IK_ObjCXX:
1104    case FrontendOptions::IK_PreprocessedObjCXX:
1105      LangStd = LangStandard::lang_gnucxx98;
1106      break;
1107    }
1108  }
1109
1110  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1111  Opts.BCPLComment = Std.hasBCPLComments();
1112  Opts.C99 = Std.isC99();
1113  Opts.CPlusPlus = Std.isCPlusPlus();
1114  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1115  Opts.Digraphs = Std.hasDigraphs();
1116  Opts.GNUMode = Std.isGNUMode();
1117  Opts.GNUInline = !Std.isC99();
1118  Opts.HexFloats = Std.hasHexFloats();
1119  Opts.ImplicitInt = Std.hasImplicitInt();
1120
1121  // OpenCL has some additional defaults.
1122  if (LangStd == LangStandard::lang_opencl) {
1123    Opts.OpenCL = 1;
1124    Opts.AltiVec = 1;
1125    Opts.CXXOperatorNames = 1;
1126    Opts.LaxVectorConversions = 1;
1127  }
1128
1129  // OpenCL and C++ both have bool, true, false keywords.
1130  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1131
1132  if (Opts.CPlusPlus)
1133    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1134
1135  if (Args.hasArg(OPT_fobjc_gc_only))
1136    Opts.setGCMode(LangOptions::GCOnly);
1137  else if (Args.hasArg(OPT_fobjc_gc))
1138    Opts.setGCMode(LangOptions::HybridGC);
1139
1140  if (Args.hasArg(OPT_print_ivar_layout))
1141    Opts.ObjCGCBitmapPrint = 1;
1142
1143  if (Args.hasArg(OPT_faltivec))
1144    Opts.AltiVec = 1;
1145
1146  if (Args.hasArg(OPT_pthread))
1147    Opts.POSIXThreads = 1;
1148
1149  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1150                                        "default");
1151  if (Vis == "default")
1152    Opts.setVisibilityMode(LangOptions::Default);
1153  else if (Vis == "hidden")
1154    Opts.setVisibilityMode(LangOptions::Hidden);
1155  else if (Vis == "protected")
1156    Opts.setVisibilityMode(LangOptions::Protected);
1157  else
1158    Diags.Report(diag::err_drv_invalid_value)
1159      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1160
1161  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1162
1163  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1164  // is specified, or -std is set to a conforming mode.
1165  Opts.Trigraphs = !Opts.GNUMode;
1166  if (Args.hasArg(OPT_trigraphs))
1167    Opts.Trigraphs = 1;
1168
1169  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1170                                   OPT_fno_dollars_in_identifiers,
1171                                   !Opts.AsmPreprocessor);
1172  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1173  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1174  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1175  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1176  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1177    Opts.LaxVectorConversions = 0;
1178  if (Args.hasArg(OPT_fno_threadsafe_statics))
1179    Opts.ThreadsafeStatics = 0;
1180  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1181  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1182  Opts.Blocks = Args.hasArg(OPT_fblocks);
1183  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1184  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1185  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1186  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1187  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1188  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1189  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1190  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1191  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1192  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1193                                               Diags);
1194  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1195  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1196                                                 OPT_fconstant_string_class);
1197  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1198  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1199  if (Opts.ObjCNonFragileABI2)
1200    Opts.ObjCNonFragileABI = true;
1201  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1202  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1203  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1204  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1205  Opts.Static = Args.hasArg(OPT_static_define);
1206  Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1207  Opts.OptimizeSize = 0;
1208
1209  // FIXME: Eliminate this dependency.
1210  unsigned Opt =
1211    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1212  Opts.Optimize = Opt != 0;
1213
1214  // This is the __NO_INLINE__ define, which just depends on things like the
1215  // optimization level and -fno-inline, not actually whether the backend has
1216  // inlining enabled.
1217  //
1218  // FIXME: This is affected by other options (-fno-inline).
1219  Opts.NoInline = !Opt;
1220
1221  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1222  switch (SSP) {
1223  default:
1224    Diags.Report(diag::err_drv_invalid_value)
1225      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1226    break;
1227  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1228  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1229  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1230  }
1231}
1232
1233static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1234                                  Diagnostic &Diags) {
1235  using namespace cc1options;
1236  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1237  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1238  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1239      Opts.TokenCache = A->getValue(Args);
1240  else
1241    Opts.TokenCache = Opts.ImplicitPTHInclude;
1242  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1243  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1244  // Add macros from the command line.
1245  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1246         ie = Args.filtered_end(); it != ie; ++it) {
1247    if (it->getOption().matches(OPT_D))
1248      Opts.addMacroDef(it->getValue(Args));
1249    else
1250      Opts.addMacroUndef(it->getValue(Args));
1251  }
1252
1253  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1254
1255  // Add the ordered list of -includes.
1256  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1257                                             OPT_include_pth),
1258         ie = Args.filtered_end(); it != ie; ++it) {
1259    // PCH is handled specially, we need to extra the original include path.
1260    if (it->getOption().matches(OPT_include_pch)) {
1261      std::string OriginalFile =
1262        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1263      if (OriginalFile.empty())
1264        continue;
1265
1266      Opts.Includes.push_back(OriginalFile);
1267    } else
1268      Opts.Includes.push_back(it->getValue(Args));
1269  }
1270
1271  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1272         ie = Args.filtered_end(); it != ie; ++it) {
1273    std::pair<llvm::StringRef,llvm::StringRef> Split =
1274      llvm::StringRef(it->getValue(Args)).split(';');
1275
1276    if (Split.second.empty()) {
1277      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1278      continue;
1279    }
1280
1281    Opts.addRemappedFile(Split.first, Split.second);
1282  }
1283}
1284
1285static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1286                                        ArgList &Args) {
1287  using namespace cc1options;
1288  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1289  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1290  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1291  Opts.ShowComments = Args.hasArg(OPT_C);
1292  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1293}
1294
1295static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1296  using namespace cc1options;
1297  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1298  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1299  Opts.Triple = getLastArgValue(Args, OPT_triple);
1300  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1301
1302  // Use the host triple if unspecified.
1303  if (Opts.Triple.empty())
1304    Opts.Triple = llvm::sys::getHostTriple();
1305}
1306
1307//
1308
1309void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1310                                        const char **ArgBegin,
1311                                        const char **ArgEnd,
1312                                        Diagnostic &Diags) {
1313  // Parse the arguments.
1314  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1315  unsigned MissingArgIndex, MissingArgCount;
1316  llvm::OwningPtr<InputArgList> Args(
1317    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1318
1319  // Check for missing argument error.
1320  if (MissingArgCount)
1321    Diags.Report(diag::err_drv_missing_argument)
1322      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1323
1324  // Issue errors on unknown arguments.
1325  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1326         ie = Args->filtered_end(); it != ie; ++it)
1327    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1328
1329  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1330  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1331  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1332  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1333  FrontendOptions::InputKind DashX =
1334    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1335  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1336  if (DashX != FrontendOptions::IK_AST)
1337    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1338  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1339  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1340  ParseTargetArgs(Res.getTargetOpts(), *Args);
1341}
1342