CompilerInvocation.cpp revision 409059701c80c4e60a02207fbf231b27c65d5333 
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.DebugPass.empty()) {
158    Res.push_back("-mdebug-pass");
159    Res.push_back(Opts.DebugPass);
160  }
161  if (Opts.DisableFPElim)
162    Res.push_back("-mdisable-fp-elim");
163  if (!Opts.FloatABI.empty()) {
164    Res.push_back("-mfloat-abi");
165    Res.push_back(Opts.FloatABI);
166  }
167  if (!Opts.LimitFloatPrecision.empty()) {
168    Res.push_back("-mlimit-float-precision");
169    Res.push_back(Opts.LimitFloatPrecision);
170  }
171  if (Opts.NoZeroInitializedInBSS)
172    Res.push_back("-mno-zero-initialized-bss");
173  if (Opts.ObjCLegacyDispatch)
174    Res.push_back("-fobjc-legacy-dispatch");
175  if (Opts.SoftFloat)
176    Res.push_back("-msoft-float");
177  if (Opts.UnwindTables)
178    Res.push_back("-munwind-tables");
179  if (Opts.RelocationModel != "pic") {
180    Res.push_back("-mrelocation-model");
181    Res.push_back(Opts.RelocationModel);
182  }
183}
184
185static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
186                                       std::vector<std::string> &Res) {
187  if (Opts.IncludeSystemHeaders)
188    Res.push_back("-sys-header-deps");
189  if (Opts.UsePhonyTargets)
190    Res.push_back("-MP");
191  if (!Opts.OutputFile.empty()) {
192    Res.push_back("-dependency-file");
193    Res.push_back(Opts.OutputFile);
194  }
195  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
196    Res.push_back("-MT");
197    Res.push_back(Opts.Targets[i]);
198  }
199}
200
201static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
202                                 std::vector<std::string> &Res) {
203  if (Opts.IgnoreWarnings)
204    Res.push_back("-w");
205  if (Opts.NoRewriteMacros)
206    Res.push_back("-Wno-rewrite-macros");
207  if (Opts.Pedantic)
208    Res.push_back("-pedantic");
209  if (Opts.PedanticErrors)
210    Res.push_back("-pedantic-errors");
211  if (!Opts.ShowColumn)
212    Res.push_back("-fno-show-column");
213  if (!Opts.ShowLocation)
214    Res.push_back("-fno-show-source-location");
215  if (!Opts.ShowCarets)
216    Res.push_back("-fno-caret-diagnostics");
217  if (!Opts.ShowFixits)
218    Res.push_back("-fno-diagnostics-fixit-info");
219  if (Opts.ShowSourceRanges)
220    Res.push_back("-fdiagnostics-print-source-range-info");
221  if (Opts.ShowColors)
222    Res.push_back("-fcolor-diagnostics");
223  if (Opts.VerifyDiagnostics)
224    Res.push_back("-verify");
225  if (Opts.BinaryOutput)
226    Res.push_back("-fdiagnostics-binary");
227  if (Opts.ShowOptionNames)
228    Res.push_back("-fdiagnostics-show-option");
229  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
230    Res.push_back("-ftabstop");
231    Res.push_back(llvm::utostr(Opts.TabStop));
232  }
233  if (Opts.MessageLength) {
234    Res.push_back("-fmessage-length");
235    Res.push_back(llvm::utostr(Opts.MessageLength));
236  }
237  if (!Opts.DumpBuildInformation.empty()) {
238    Res.push_back("-dump-build-information");
239    Res.push_back(Opts.DumpBuildInformation);
240  }
241  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
242    Res.push_back("-W" + Opts.Warnings[i]);
243}
244
245static const char *getInputKindName(FrontendOptions::InputKind Kind) {
246  switch (Kind) {
247  case FrontendOptions::IK_None:              break;
248  case FrontendOptions::IK_AST:               return "ast";
249  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
250  case FrontendOptions::IK_C:                 return "c";
251  case FrontendOptions::IK_CXX:               return "c++";
252  case FrontendOptions::IK_ObjC:              return "objective-c";
253  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
254  case FrontendOptions::IK_OpenCL:            return "cl";
255  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
256  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
257  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
258  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
259  }
260
261  llvm_unreachable("Unexpected language kind!");
262  return 0;
263}
264
265static const char *getActionName(frontend::ActionKind Kind) {
266  switch (Kind) {
267  case frontend::PluginAction:
268  case frontend::InheritanceView:
269    llvm_unreachable("Invalid kind!");
270
271  case frontend::ASTDump:                return "-ast-dump";
272  case frontend::ASTPrint:               return "-ast-print";
273  case frontend::ASTPrintXML:            return "-ast-print-xml";
274  case frontend::ASTView:                return "-ast-view";
275  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
276  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
277  case frontend::DumpTokens:             return "-dump-tokens";
278  case frontend::EmitAssembly:           return "-S";
279  case frontend::EmitBC:                 return "-emit-llvm-bc";
280  case frontend::EmitHTML:               return "-emit-html";
281  case frontend::EmitLLVM:               return "-emit-llvm";
282  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
283  case frontend::EmitObj:                return "-emit-obj";
284  case frontend::FixIt:                  return "-fixit";
285  case frontend::GeneratePCH:            return "-emit-pch";
286  case frontend::GeneratePTH:            return "-emit-pth";
287  case frontend::ParseNoop:              return "-parse-noop";
288  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
289  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
290  case frontend::PrintDeclContext:       return "-print-decl-contexts";
291  case frontend::PrintPreprocessedInput: return "-E";
292  case frontend::RewriteMacros:          return "-rewrite-macros";
293  case frontend::RewriteObjC:            return "-rewrite-objc";
294  case frontend::RewriteTest:            return "-rewrite-test";
295  case frontend::RunAnalysis:            return "-analyze";
296  case frontend::RunPreprocessorOnly:    return "-Eonly";
297  }
298
299  llvm_unreachable("Unexpected language kind!");
300  return 0;
301}
302
303static void FrontendOptsToArgs(const FrontendOptions &Opts,
304                               std::vector<std::string> &Res) {
305  if (!Opts.DebugCodeCompletionPrinter)
306    Res.push_back("-no-code-completion-debug-printer");
307  if (Opts.DisableFree)
308    Res.push_back("-disable-free");
309  if (Opts.EmptyInputOnly)
310    Res.push_back("-empty-input-only");
311  if (Opts.RelocatablePCH)
312    Res.push_back("-relocatable-pch");
313  if (Opts.ShowHelp)
314    Res.push_back("-help");
315  if (Opts.ShowMacrosInCodeCompletion)
316    Res.push_back("-code-completion-macros");
317  if (Opts.ShowStats)
318    Res.push_back("-print-stats");
319  if (Opts.ShowTimers)
320    Res.push_back("-ftime-report");
321  if (Opts.ShowVersion)
322    Res.push_back("-version");
323
324  bool NeedLang = false;
325  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
326    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
327        Opts.Inputs[i].first)
328      NeedLang = true;
329  if (NeedLang) {
330    Res.push_back("-x");
331    Res.push_back(getInputKindName(Opts.Inputs[0].first));
332  }
333  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
334    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
335           "Unable to represent this input vector!");
336    Res.push_back(Opts.Inputs[i].second);
337  }
338
339  if (!Opts.OutputFile.empty()) {
340    Res.push_back("-o");
341    Res.push_back(Opts.OutputFile);
342  }
343  if (!Opts.ViewClassInheritance.empty()) {
344    Res.push_back("-cxx-inheritance-view");
345    Res.push_back(Opts.ViewClassInheritance);
346  }
347  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
348    Res.push_back("-fixit-at");
349    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
350                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
351                  llvm::utostr(Opts.FixItLocations[i].Column));
352  }
353  if (!Opts.CodeCompletionAt.FileName.empty()) {
354    Res.push_back("-code-completion-at");
355    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
356                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
357                  llvm::utostr(Opts.CodeCompletionAt.Column));
358  }
359  if (Opts.ProgramAction != frontend::InheritanceView &&
360      Opts.ProgramAction != frontend::PluginAction)
361    Res.push_back(getActionName(Opts.ProgramAction));
362  if (!Opts.ActionName.empty()) {
363    Res.push_back("-plugin");
364    Res.push_back(Opts.ActionName);
365  }
366  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
367    Res.push_back("-load");
368    Res.push_back(Opts.Plugins[i]);
369  }
370  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
371    Res.push_back("-ast-merge");
372    Res.push_back(Opts.ASTMergeFiles[i]);
373  }
374}
375
376static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
377                                   std::vector<std::string> &Res) {
378  if (Opts.Sysroot != "/") {
379    Res.push_back("-isysroot");
380    Res.push_back(Opts.Sysroot);
381  }
382
383  /// User specified include entries.
384  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
385    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
386    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
387      llvm::llvm_report_error("Invalid option set!");
388    if (E.IsUserSupplied) {
389      if (E.Group == frontend::After) {
390        Res.push_back("-idirafter");
391      } else if (E.Group == frontend::Quoted) {
392        Res.push_back("-iquote");
393      } else if (E.Group == frontend::System) {
394        Res.push_back("-isystem");
395      } else {
396        assert(E.Group == frontend::Angled && "Invalid group!");
397        Res.push_back(E.IsFramework ? "-F" : "-I");
398      }
399    } else {
400      if (E.Group != frontend::Angled && E.Group != frontend::System)
401        llvm::llvm_report_error("Invalid option set!");
402      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
403                    "-iwithprefix");
404    }
405    Res.push_back(E.Path);
406  }
407
408  if (!Opts.EnvIncPath.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.CEnvIncPath.empty()) {
413    // FIXME: Provide an option for this, and move env detection to driver.
414    llvm::llvm_report_error("Not yet implemented!");
415  }
416  if (!Opts.ObjCEnvIncPath.empty()) {
417    // FIXME: Provide an option for this, and move env detection to driver.
418    llvm::llvm_report_error("Not yet implemented!");
419  }
420  if (!Opts.CXXEnvIncPath.empty()) {
421    // FIXME: Provide an option for this, and move env detection to driver.
422    llvm::llvm_report_error("Not yet implemented!");
423  }
424  if (!Opts.ObjCXXEnvIncPath.empty()) {
425    // FIXME: Provide an option for this, and move env detection to driver.
426    llvm::llvm_report_error("Not yet implemented!");
427  }
428  if (!Opts.ResourceDir.empty()) {
429    Res.push_back("-resource-dir");
430    Res.push_back(Opts.ResourceDir);
431  }
432  if (!Opts.UseStandardIncludes)
433    Res.push_back("-nostdinc");
434  if (Opts.Verbose)
435    Res.push_back("-v");
436}
437
438static void LangOptsToArgs(const LangOptions &Opts,
439                           std::vector<std::string> &Res) {
440  LangOptions DefaultLangOpts;
441
442  // FIXME: Need to set -std to get all the implicit options.
443
444  // FIXME: We want to only pass options relative to the defaults, which
445  // requires constructing a target. :(
446  //
447  // It would be better to push the all target specific choices into the driver,
448  // so that everything below that was more uniform.
449
450  if (Opts.Trigraphs)
451    Res.push_back("-trigraphs");
452  // Implicit based on the input kind:
453  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
454  // Implicit based on the input language standard:
455  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
456  if (Opts.DollarIdents)
457    Res.push_back("-fdollars-in-identifiers");
458  if (Opts.Microsoft)
459    Res.push_back("-fms-extensions");
460  if (Opts.ObjCNonFragileABI)
461    Res.push_back("-fobjc-nonfragile-abi");
462  if (Opts.ObjCNonFragileABI2)
463    Res.push_back("-fobjc-nonfragile-abi2");
464  // NoInline is implicit.
465  if (!Opts.CXXOperatorNames)
466    Res.push_back("-fno-operator-names");
467  if (Opts.PascalStrings)
468    Res.push_back("-fpascal-strings");
469  if (Opts.CatchUndefined)
470    Res.push_back("-fcatch-undefined-behavior");
471  if (Opts.WritableStrings)
472    Res.push_back("-fwritable-strings");
473  if (!Opts.LaxVectorConversions)
474    Res.push_back("-fno-lax-vector-conversions");
475  if (Opts.AltiVec)
476    Res.push_back("-faltivec");
477  if (Opts.Exceptions)
478    Res.push_back("-fexceptions");
479  if (Opts.SjLjExceptions)
480    Res.push_back("-fsjlj-exceptions");
481  if (!Opts.RTTI)
482    Res.push_back("-fno-rtti");
483  if (!Opts.NeXTRuntime)
484    Res.push_back("-fgnu-runtime");
485  if (Opts.Freestanding)
486    Res.push_back("-ffreestanding");
487  if (Opts.NoBuiltin)
488    Res.push_back("-fno-builtin");
489  if (!Opts.AssumeSaneOperatorNew)
490    Res.push_back("-fno-assume-sane-operator-new");
491  if (!Opts.ThreadsafeStatics)
492    Res.push_back("-fno-threadsafe-statics");
493  if (Opts.POSIXThreads)
494    Res.push_back("-pthread");
495  if (Opts.Blocks)
496    Res.push_back("-fblocks");
497  if (Opts.EmitAllDecls)
498    Res.push_back("-femit-all-decls");
499  if (Opts.MathErrno)
500    Res.push_back("-fmath-errno");
501  if (Opts.OverflowChecking)
502    Res.push_back("-ftrapv");
503  if (Opts.HeinousExtensions)
504    Res.push_back("-fheinous-gnu-extensions");
505  // Optimize is implicit.
506  // OptimizeSize is implicit.
507  if (Opts.Static)
508    Res.push_back("-static-define");
509  if (Opts.PICLevel) {
510    Res.push_back("-pic-level");
511    Res.push_back(llvm::utostr(Opts.PICLevel));
512  }
513  if (Opts.ObjCGCBitmapPrint)
514    Res.push_back("-print-ivar-layout");
515  // FIXME: Don't forget to update when the default changes!
516  if (Opts.AccessControl)
517    Res.push_back("-faccess-control");
518  if (!Opts.CharIsSigned)
519    Res.push_back("-fno-signed-char");
520  if (Opts.ShortWChar)
521    Res.push_back("-fshort-wchar");
522  if (!Opts.ElideConstructors)
523    Res.push_back("-fno-elide-constructors");
524  if (Opts.getGCMode() != LangOptions::NonGC) {
525    if (Opts.getGCMode() == LangOptions::HybridGC) {
526      Res.push_back("-fobjc-gc");
527    } else {
528      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
529      Res.push_back("-fobjc-gc-only");
530    }
531  }
532  if (Opts.getVisibilityMode() != LangOptions::Default) {
533    Res.push_back("-fvisibility");
534    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
535      Res.push_back("hidden");
536    } else {
537      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
538             "Invalid visibility!");
539      Res.push_back("protected");
540    }
541  }
542  if (Opts.getStackProtectorMode() != 0) {
543    Res.push_back("-stack-protector");
544    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
545  }
546  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
547    Res.push_back("-ftemplate-depth");
548    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
549  }
550  if (!Opts.ObjCConstantStringClass.empty()) {
551    Res.push_back("-fconstant-string-class");
552    Res.push_back(Opts.ObjCConstantStringClass);
553  }
554}
555
556static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
557                                   std::vector<std::string> &Res) {
558  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
559    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
560                  Opts.Macros[i].first);
561  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
562    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
563    Res.push_back("-include");
564    Res.push_back(Opts.Includes[i]);
565  }
566  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
567    Res.push_back("-imacros");
568    Res.push_back(Opts.MacroIncludes[i]);
569  }
570  if (!Opts.UsePredefines)
571    Res.push_back("-undef");
572  if (!Opts.ImplicitPCHInclude.empty()) {
573    Res.push_back("-include-pch");
574    Res.push_back(Opts.ImplicitPCHInclude);
575  }
576  if (!Opts.ImplicitPTHInclude.empty()) {
577    Res.push_back("-include-pth");
578    Res.push_back(Opts.ImplicitPTHInclude);
579  }
580  if (!Opts.TokenCache.empty()) {
581    if (Opts.ImplicitPTHInclude.empty()) {
582      Res.push_back("-token-cache");
583      Res.push_back(Opts.TokenCache);
584    } else
585      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
586             "Unsupported option combination!");
587  }
588  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
589    Res.push_back("-remap-file");
590    Res.push_back(Opts.RemappedFiles[i].first + ";" +
591                  Opts.RemappedFiles[i].second);
592  }
593}
594
595static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
596                                         std::vector<std::string> &Res) {
597  if (!Opts.ShowCPP && !Opts.ShowMacros)
598    llvm::llvm_report_error("Invalid option combination!");
599
600  if (Opts.ShowCPP && Opts.ShowMacros)
601    Res.push_back("-dD");
602  else if (!Opts.ShowCPP && Opts.ShowMacros)
603    Res.push_back("-dM");
604
605  if (!Opts.ShowLineMarkers)
606    Res.push_back("-P");
607  if (Opts.ShowComments)
608    Res.push_back("-C");
609  if (Opts.ShowMacroComments)
610    Res.push_back("-CC");
611}
612
613static void TargetOptsToArgs(const TargetOptions &Opts,
614                             std::vector<std::string> &Res) {
615  Res.push_back("-triple");
616  Res.push_back(Opts.Triple);
617  if (!Opts.CPU.empty()) {
618    Res.push_back("-target-cpu");
619    Res.push_back(Opts.CPU);
620  }
621  if (!Opts.ABI.empty()) {
622    Res.push_back("-target-abi");
623    Res.push_back(Opts.ABI);
624  }
625  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
626    Res.push_back("-target-feature");
627    Res.push_back(Opts.Features[i]);
628  }
629}
630
631void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
632  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
633  CodeGenOptsToArgs(getCodeGenOpts(), Res);
634  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
635  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
636  FrontendOptsToArgs(getFrontendOpts(), Res);
637  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
638  LangOptsToArgs(getLangOpts(), Res);
639  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
640  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
641  TargetOptsToArgs(getTargetOpts(), Res);
642}
643
644//===----------------------------------------------------------------------===//
645// Deserialization (to args)
646//===----------------------------------------------------------------------===//
647
648using namespace clang::driver;
649using namespace clang::driver::cc1options;
650
651static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
652                                       llvm::StringRef Default = "") {
653  if (Arg *A = Args.getLastArg(ID))
654    return A->getValue(Args);
655  return Default;
656}
657
658static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
659                              int Default, Diagnostic &Diags) {
660  Arg *A = Args.getLastArg(ID);
661  if (!A)
662    return Default;
663
664  int Res = Default;
665  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
666    Diags.Report(diag::err_drv_invalid_int_value)
667        << A->getAsString(Args) << A->getValue(Args);
668
669  return Res;
670}
671
672static std::vector<std::string>
673getAllArgValues(ArgList &Args, cc1options::ID ID) {
674  llvm::SmallVector<const char *, 16> Values;
675  Args.AddAllArgValues(Values, ID);
676  return std::vector<std::string>(Values.begin(), Values.end());
677}
678
679//
680
681static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
682                              Diagnostic &Diags) {
683  using namespace cc1options;
684
685  Opts.AnalysisList.clear();
686#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
687  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
688#include "clang/Frontend/Analyses.def"
689
690  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
691    llvm::StringRef Name = A->getValue(Args);
692    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
693#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
694      .Case(CMDFLAG, NAME##Model)
695#include "clang/Frontend/Analyses.def"
696      .Default(NumStores);
697    // FIXME: Error handling.
698    if (Value == NumStores)
699      Diags.Report(diag::err_drv_invalid_value)
700        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
701    else
702      Opts.AnalysisStoreOpt = Value;
703  }
704
705  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
706    llvm::StringRef Name = A->getValue(Args);
707    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
708#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
709      .Case(CMDFLAG, NAME##Model)
710#include "clang/Frontend/Analyses.def"
711      .Default(NumConstraints);
712    // FIXME: Error handling.
713    if (Value == NumConstraints)
714      Diags.Report(diag::err_drv_invalid_value)
715        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
716    else
717      Opts.AnalysisConstraintsOpt = Value;
718  }
719
720  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
721    llvm::StringRef Name = A->getValue(Args);
722    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
723#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
724      .Case(CMDFLAG, PD_##NAME)
725#include "clang/Frontend/Analyses.def"
726      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
727    // FIXME: Error handling.
728    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
729      Diags.Report(diag::err_drv_invalid_value)
730        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
731    else
732      Opts.AnalysisDiagOpt = Value;
733  }
734
735  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
736  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
737  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
738  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
739  Opts.AnalyzeNestedBlocks =
740    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
741  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
742  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
743  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
744  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
745  Opts.EnableExperimentalInternalChecks =
746    Args.hasArg(OPT_analyzer_experimental_internal_checks);
747  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
748}
749
750static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
751                             Diagnostic &Diags) {
752  using namespace cc1options;
753  // -Os implies -O2
754  if (Args.hasArg(OPT_Os))
755    Opts.OptimizationLevel = 2;
756  else {
757    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
758    if (Opts.OptimizationLevel > 3) {
759      Diags.Report(diag::err_drv_invalid_value)
760        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
761      Opts.OptimizationLevel = 3;
762    }
763  }
764
765  // We must always run at least the always inlining pass.
766  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
767    : CodeGenOptions::OnlyAlwaysInlining;
768
769  Opts.DebugInfo = Args.hasArg(OPT_g);
770  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
771  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
772  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
773  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
774  Opts.NoCommon = Args.hasArg(OPT_fno_common);
775  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
776  Opts.OptimizeSize = Args.hasArg(OPT_Os);
777  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
778
779  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
780  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
781  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
782  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
783  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
784  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
785  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
786  Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
787  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
788  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
789  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
790
791  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
792
793  // FIXME: Put elsewhere?
794#ifdef NDEBUG
795  Opts.VerifyModule = 0;
796#else
797  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
798#endif
799}
800
801static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
802                                      ArgList &Args) {
803  using namespace cc1options;
804  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
805  Opts.Targets = getAllArgValues(Args, OPT_MT);
806  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
807  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
808}
809
810static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
811                                Diagnostic &Diags) {
812  using namespace cc1options;
813  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
814  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
815  Opts.Pedantic = Args.hasArg(OPT_pedantic);
816  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
817  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
818  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
819  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
820  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
821  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
822  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
823  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
824  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
825  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
826  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
827                                    DiagnosticOptions::DefaultTabStop, Diags);
828  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
829    Diags.Report(diag::warn_ignoring_ftabstop_value)
830      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
831    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
832  }
833  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
834  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
835  Opts.Warnings = getAllArgValues(Args, OPT_W);
836}
837
838static FrontendOptions::InputKind
839ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
840  using namespace cc1options;
841  Opts.ProgramAction = frontend::ParseSyntaxOnly;
842  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
843    switch (A->getOption().getID()) {
844    default:
845      assert(0 && "Invalid option in group!");
846    case OPT_ast_dump:
847      Opts.ProgramAction = frontend::ASTDump; break;
848    case OPT_ast_print:
849      Opts.ProgramAction = frontend::ASTPrint; break;
850    case OPT_ast_print_xml:
851      Opts.ProgramAction = frontend::ASTPrintXML; break;
852    case OPT_ast_view:
853      Opts.ProgramAction = frontend::ASTView; break;
854    case OPT_dump_raw_tokens:
855      Opts.ProgramAction = frontend::DumpRawTokens; break;
856    case OPT_dump_record_layouts:
857      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
858    case OPT_dump_tokens:
859      Opts.ProgramAction = frontend::DumpTokens; break;
860    case OPT_S:
861      Opts.ProgramAction = frontend::EmitAssembly; break;
862    case OPT_emit_llvm_bc:
863      Opts.ProgramAction = frontend::EmitBC; break;
864    case OPT_emit_html:
865      Opts.ProgramAction = frontend::EmitHTML; break;
866    case OPT_emit_llvm:
867      Opts.ProgramAction = frontend::EmitLLVM; break;
868    case OPT_emit_llvm_only:
869      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
870    case OPT_emit_obj:
871      Opts.ProgramAction = frontend::EmitObj; break;
872    case OPT_fixit:
873      Opts.ProgramAction = frontend::FixIt; break;
874    case OPT_emit_pch:
875      Opts.ProgramAction = frontend::GeneratePCH; break;
876    case OPT_emit_pth:
877      Opts.ProgramAction = frontend::GeneratePTH; break;
878    case OPT_parse_noop:
879      Opts.ProgramAction = frontend::ParseNoop; break;
880    case OPT_parse_print_callbacks:
881      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
882    case OPT_fsyntax_only:
883      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
884    case OPT_print_decl_contexts:
885      Opts.ProgramAction = frontend::PrintDeclContext; break;
886    case OPT_E:
887      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
888    case OPT_rewrite_macros:
889      Opts.ProgramAction = frontend::RewriteMacros; break;
890    case OPT_rewrite_objc:
891      Opts.ProgramAction = frontend::RewriteObjC; break;
892    case OPT_rewrite_test:
893      Opts.ProgramAction = frontend::RewriteTest; break;
894    case OPT_analyze:
895      Opts.ProgramAction = frontend::RunAnalysis; break;
896    case OPT_Eonly:
897      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
898    }
899  }
900  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
901    Opts.ProgramAction = frontend::PluginAction;
902    Opts.ActionName = A->getValue(Args);
903  }
904
905  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
906    Opts.CodeCompletionAt =
907      ParsedSourceLocation::FromString(A->getValue(Args));
908    if (Opts.CodeCompletionAt.FileName.empty())
909      Diags.Report(diag::err_drv_invalid_value)
910        << A->getAsString(Args) << A->getValue(Args);
911  }
912  Opts.DebugCodeCompletionPrinter =
913    !Args.hasArg(OPT_no_code_completion_debug_printer);
914  Opts.DisableFree = Args.hasArg(OPT_disable_free);
915  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
916
917  Opts.FixItLocations.clear();
918  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
919         ie = Args.filtered_end(); it != ie; ++it) {
920    const char *Loc = it->getValue(Args);
921    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
922
923    if (PSL.FileName.empty()) {
924      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
925      continue;
926    }
927
928    Opts.FixItLocations.push_back(PSL);
929  }
930
931  Opts.OutputFile = getLastArgValue(Args, OPT_o);
932  Opts.Plugins = getAllArgValues(Args, OPT_load);
933  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
934  Opts.ShowHelp = Args.hasArg(OPT_help);
935  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
936  Opts.ShowStats = Args.hasArg(OPT_print_stats);
937  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
938  Opts.ShowVersion = Args.hasArg(OPT_version);
939  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
940  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
941
942  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
943  if (const Arg *A = Args.getLastArg(OPT_x)) {
944    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
945      .Case("c", FrontendOptions::IK_C)
946      .Case("cl", FrontendOptions::IK_OpenCL)
947      .Case("c", FrontendOptions::IK_C)
948      .Case("cl", FrontendOptions::IK_OpenCL)
949      .Case("c++", FrontendOptions::IK_CXX)
950      .Case("objective-c", FrontendOptions::IK_ObjC)
951      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
952      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
953      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
954      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
955      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
956      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
957      .Case("c-header", FrontendOptions::IK_C)
958      .Case("objective-c-header", FrontendOptions::IK_ObjC)
959      .Case("c++-header", FrontendOptions::IK_CXX)
960      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
961      .Case("ast", FrontendOptions::IK_AST)
962      .Default(FrontendOptions::IK_None);
963    if (DashX == FrontendOptions::IK_None)
964      Diags.Report(diag::err_drv_invalid_value)
965        << A->getAsString(Args) << A->getValue(Args);
966  }
967
968  // '-' is the default input if none is given.
969  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
970  Opts.Inputs.clear();
971  if (Inputs.empty())
972    Inputs.push_back("-");
973  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
974    FrontendOptions::InputKind IK = DashX;
975    if (IK == FrontendOptions::IK_None) {
976      IK = FrontendOptions::getInputKindForExtension(
977        llvm::StringRef(Inputs[i]).rsplit('.').second);
978      // FIXME: Remove this hack.
979      if (i == 0)
980        DashX = IK;
981    }
982    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
983  }
984
985  return DashX;
986}
987
988std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
989                                                 void *MainAddr) {
990  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
991
992  if (!P.isEmpty()) {
993    P.eraseComponent();  // Remove /clang from foo/bin/clang
994    P.eraseComponent();  // Remove /bin   from foo/bin
995
996    // Get foo/lib/clang/<version>/include
997    P.appendComponent("lib");
998    P.appendComponent("clang");
999    P.appendComponent(CLANG_VERSION_STRING);
1000  }
1001
1002  return P.str();
1003}
1004
1005static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1006  using namespace cc1options;
1007  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1008  Opts.Verbose = Args.hasArg(OPT_v);
1009  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1010  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1011  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1012
1013  // Add -I... and -F... options in order.
1014  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1015         ie = Args.filtered_end(); it != ie; ++it)
1016    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1017                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1018
1019  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1020  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1021  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1022                                             OPT_iwithprefixbefore),
1023         ie = Args.filtered_end(); it != ie; ++it) {
1024    if (it->getOption().matches(OPT_iprefix))
1025      Prefix = it->getValue(Args);
1026    else if (it->getOption().matches(OPT_iwithprefix))
1027      Opts.AddPath(Prefix.str() + it->getValue(Args),
1028                   frontend::System, false, false);
1029    else
1030      Opts.AddPath(Prefix.str() + it->getValue(Args),
1031                   frontend::Angled, false, false);
1032  }
1033
1034  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1035         ie = Args.filtered_end(); it != ie; ++it)
1036    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1037  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1038         ie = Args.filtered_end(); it != ie; ++it)
1039    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1040  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1041         ie = Args.filtered_end(); it != ie; ++it)
1042    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1043
1044  // FIXME: Need options for the various environment variables!
1045}
1046
1047static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1048                          FrontendOptions::InputKind IK,
1049                          Diagnostic &Diags) {
1050  // FIXME: Cleanup per-file based stuff.
1051
1052  // Set some properties which depend soley on the input kind; it would be nice
1053  // to move these to the language standard, and have the driver resolve the
1054  // input kind + language standard.
1055  if (IK == FrontendOptions::IK_Asm) {
1056    Opts.AsmPreprocessor = 1;
1057  } else if (IK == FrontendOptions::IK_ObjC ||
1058             IK == FrontendOptions::IK_ObjCXX ||
1059             IK == FrontendOptions::IK_PreprocessedObjC ||
1060             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1061    Opts.ObjC1 = Opts.ObjC2 = 1;
1062  }
1063
1064  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1065  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1066    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1067#define LANGSTANDARD(id, name, desc, features) \
1068      .Case(name, LangStandard::lang_##id)
1069#include "clang/Frontend/LangStandards.def"
1070      .Default(LangStandard::lang_unspecified);
1071    if (LangStd == LangStandard::lang_unspecified)
1072      Diags.Report(diag::err_drv_invalid_value)
1073        << A->getAsString(Args) << A->getValue(Args);
1074  }
1075
1076  if (LangStd == LangStandard::lang_unspecified) {
1077    // Based on the base language, pick one.
1078    switch (IK) {
1079    case FrontendOptions::IK_None:
1080    case FrontendOptions::IK_AST:
1081      assert(0 && "Invalid input kind!");
1082    case FrontendOptions::IK_OpenCL:
1083      LangStd = LangStandard::lang_opencl;
1084      break;
1085    case FrontendOptions::IK_Asm:
1086    case FrontendOptions::IK_C:
1087    case FrontendOptions::IK_PreprocessedC:
1088    case FrontendOptions::IK_ObjC:
1089    case FrontendOptions::IK_PreprocessedObjC:
1090      LangStd = LangStandard::lang_gnu99;
1091      break;
1092    case FrontendOptions::IK_CXX:
1093    case FrontendOptions::IK_PreprocessedCXX:
1094    case FrontendOptions::IK_ObjCXX:
1095    case FrontendOptions::IK_PreprocessedObjCXX:
1096      LangStd = LangStandard::lang_gnucxx98;
1097      break;
1098    }
1099  }
1100
1101  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1102  Opts.BCPLComment = Std.hasBCPLComments();
1103  Opts.C99 = Std.isC99();
1104  Opts.CPlusPlus = Std.isCPlusPlus();
1105  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1106  Opts.Digraphs = Std.hasDigraphs();
1107  Opts.GNUMode = Std.isGNUMode();
1108  Opts.GNUInline = !Std.isC99();
1109  Opts.HexFloats = Std.hasHexFloats();
1110  Opts.ImplicitInt = Std.hasImplicitInt();
1111
1112  // OpenCL has some additional defaults.
1113  if (LangStd == LangStandard::lang_opencl) {
1114    Opts.OpenCL = 1;
1115    Opts.AltiVec = 1;
1116    Opts.CXXOperatorNames = 1;
1117    Opts.LaxVectorConversions = 1;
1118  }
1119
1120  // OpenCL and C++ both have bool, true, false keywords.
1121  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1122
1123  if (Opts.CPlusPlus)
1124    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1125
1126  if (Args.hasArg(OPT_fobjc_gc_only))
1127    Opts.setGCMode(LangOptions::GCOnly);
1128  else if (Args.hasArg(OPT_fobjc_gc))
1129    Opts.setGCMode(LangOptions::HybridGC);
1130
1131  if (Args.hasArg(OPT_print_ivar_layout))
1132    Opts.ObjCGCBitmapPrint = 1;
1133
1134  if (Args.hasArg(OPT_faltivec))
1135    Opts.AltiVec = 1;
1136
1137  if (Args.hasArg(OPT_pthread))
1138    Opts.POSIXThreads = 1;
1139
1140  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1141                                        "default");
1142  if (Vis == "default")
1143    Opts.setVisibilityMode(LangOptions::Default);
1144  else if (Vis == "hidden")
1145    Opts.setVisibilityMode(LangOptions::Hidden);
1146  else if (Vis == "protected")
1147    Opts.setVisibilityMode(LangOptions::Protected);
1148  else
1149    Diags.Report(diag::err_drv_invalid_value)
1150      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1151
1152  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1153
1154  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1155  // is specified, or -std is set to a conforming mode.
1156  Opts.Trigraphs = !Opts.GNUMode;
1157  if (Args.hasArg(OPT_trigraphs))
1158    Opts.Trigraphs = 1;
1159
1160  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1161                                   OPT_fno_dollars_in_identifiers,
1162                                   !Opts.AsmPreprocessor);
1163  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1164  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1165  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1166  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1167    Opts.LaxVectorConversions = 0;
1168  if (Args.hasArg(OPT_fno_threadsafe_statics))
1169    Opts.ThreadsafeStatics = 0;
1170  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1171  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1172  Opts.Blocks = Args.hasArg(OPT_fblocks);
1173  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1174  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1175  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1176  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1177  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1178  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1179  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1180  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1181  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1182  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1183                                               Diags);
1184  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1185  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1186                                                 OPT_fconstant_string_class);
1187  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1188  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1189  if (Opts.ObjCNonFragileABI2)
1190    Opts.ObjCNonFragileABI = true;
1191  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1192  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1193  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1194  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1195  Opts.Static = Args.hasArg(OPT_static_define);
1196  Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1197  Opts.OptimizeSize = 0;
1198
1199  // FIXME: Eliminate this dependency.
1200  unsigned Opt =
1201    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1202  Opts.Optimize = Opt != 0;
1203
1204  // This is the __NO_INLINE__ define, which just depends on things like the
1205  // optimization level and -fno-inline, not actually whether the backend has
1206  // inlining enabled.
1207  //
1208  // FIXME: This is affected by other options (-fno-inline).
1209  Opts.NoInline = !Opt;
1210
1211  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1212  switch (SSP) {
1213  default:
1214    Diags.Report(diag::err_drv_invalid_value)
1215      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1216    break;
1217  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1218  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1219  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1220  }
1221}
1222
1223static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1224                                  Diagnostic &Diags) {
1225  using namespace cc1options;
1226  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1227  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1228  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1229      Opts.TokenCache = A->getValue(Args);
1230  else
1231    Opts.TokenCache = Opts.ImplicitPTHInclude;
1232  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1233
1234  // Add macros from the command line.
1235  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1236         ie = Args.filtered_end(); it != ie; ++it) {
1237    if (it->getOption().matches(OPT_D))
1238      Opts.addMacroDef(it->getValue(Args));
1239    else
1240      Opts.addMacroUndef(it->getValue(Args));
1241  }
1242
1243  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1244
1245  // Add the ordered list of -includes.
1246  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1247                                             OPT_include_pth),
1248         ie = Args.filtered_end(); it != ie; ++it) {
1249    // PCH is handled specially, we need to extra the original include path.
1250    if (it->getOption().matches(OPT_include_pch)) {
1251      std::string OriginalFile =
1252        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1253      if (OriginalFile.empty())
1254        continue;
1255
1256      Opts.Includes.push_back(OriginalFile);
1257    } else
1258      Opts.Includes.push_back(it->getValue(Args));
1259  }
1260
1261  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1262         ie = Args.filtered_end(); it != ie; ++it) {
1263    std::pair<llvm::StringRef,llvm::StringRef> Split =
1264      llvm::StringRef(it->getValue(Args)).split(';');
1265
1266    if (Split.second.empty()) {
1267      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1268      continue;
1269    }
1270
1271    Opts.addRemappedFile(Split.first, Split.second);
1272  }
1273}
1274
1275static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1276                                        ArgList &Args) {
1277  using namespace cc1options;
1278  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1279  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1280  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1281  Opts.ShowComments = Args.hasArg(OPT_C);
1282  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1283}
1284
1285static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1286  using namespace cc1options;
1287  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1288  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1289  Opts.Triple = getLastArgValue(Args, OPT_triple);
1290  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1291
1292  // Use the host triple if unspecified.
1293  if (Opts.Triple.empty())
1294    Opts.Triple = llvm::sys::getHostTriple();
1295}
1296
1297//
1298
1299void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1300                                        const char **ArgBegin,
1301                                        const char **ArgEnd,
1302                                        Diagnostic &Diags) {
1303  // Parse the arguments.
1304  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1305  unsigned MissingArgIndex, MissingArgCount;
1306  llvm::OwningPtr<InputArgList> Args(
1307    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1308
1309  // Check for missing argument error.
1310  if (MissingArgCount)
1311    Diags.Report(diag::err_drv_missing_argument)
1312      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1313
1314  // Issue errors on unknown arguments.
1315  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1316         ie = Args->filtered_end(); it != ie; ++it)
1317    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1318
1319  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1320  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1321  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1322  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1323  FrontendOptions::InputKind DashX =
1324    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1325  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1326  if (DashX != FrontendOptions::IK_AST)
1327    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1328  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1329  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1330  ParseTargetArgs(Res.getTargetOpts(), *Args);
1331}
1332