CompilerInvocation.cpp revision 204643 
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  if (Opts.CXXCtorDtorAliases)
184    Res.push_back("-mconstructor-aliases");
185  if (!Opts.VerifyModule)
186    Res.push_back("-disable-llvm-verifier");
187}
188
189static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
190                                       std::vector<std::string> &Res) {
191  if (Opts.IncludeSystemHeaders)
192    Res.push_back("-sys-header-deps");
193  if (Opts.UsePhonyTargets)
194    Res.push_back("-MP");
195  if (!Opts.OutputFile.empty()) {
196    Res.push_back("-dependency-file");
197    Res.push_back(Opts.OutputFile);
198  }
199  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
200    Res.push_back("-MT");
201    Res.push_back(Opts.Targets[i]);
202  }
203}
204
205static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
206                                 std::vector<std::string> &Res) {
207  if (Opts.IgnoreWarnings)
208    Res.push_back("-w");
209  if (Opts.NoRewriteMacros)
210    Res.push_back("-Wno-rewrite-macros");
211  if (Opts.Pedantic)
212    Res.push_back("-pedantic");
213  if (Opts.PedanticErrors)
214    Res.push_back("-pedantic-errors");
215  if (!Opts.ShowColumn)
216    Res.push_back("-fno-show-column");
217  if (!Opts.ShowLocation)
218    Res.push_back("-fno-show-source-location");
219  if (!Opts.ShowCarets)
220    Res.push_back("-fno-caret-diagnostics");
221  if (!Opts.ShowFixits)
222    Res.push_back("-fno-diagnostics-fixit-info");
223  if (Opts.ShowSourceRanges)
224    Res.push_back("-fdiagnostics-print-source-range-info");
225  if (Opts.ShowColors)
226    Res.push_back("-fcolor-diagnostics");
227  if (Opts.VerifyDiagnostics)
228    Res.push_back("-verify");
229  if (Opts.BinaryOutput)
230    Res.push_back("-fdiagnostics-binary");
231  if (Opts.ShowOptionNames)
232    Res.push_back("-fdiagnostics-show-option");
233  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
234    Res.push_back("-ftabstop");
235    Res.push_back(llvm::utostr(Opts.TabStop));
236  }
237  if (Opts.MessageLength) {
238    Res.push_back("-fmessage-length");
239    Res.push_back(llvm::utostr(Opts.MessageLength));
240  }
241  if (!Opts.DumpBuildInformation.empty()) {
242    Res.push_back("-dump-build-information");
243    Res.push_back(Opts.DumpBuildInformation);
244  }
245  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
246    Res.push_back("-W" + Opts.Warnings[i]);
247}
248
249static const char *getInputKindName(FrontendOptions::InputKind Kind) {
250  switch (Kind) {
251  case FrontendOptions::IK_None:              break;
252  case FrontendOptions::IK_AST:               return "ast";
253  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
254  case FrontendOptions::IK_C:                 return "c";
255  case FrontendOptions::IK_CXX:               return "c++";
256  case FrontendOptions::IK_ObjC:              return "objective-c";
257  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
258  case FrontendOptions::IK_OpenCL:            return "cl";
259  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
260  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
261  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
262  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
263  }
264
265  llvm_unreachable("Unexpected language kind!");
266  return 0;
267}
268
269static const char *getActionName(frontend::ActionKind Kind) {
270  switch (Kind) {
271  case frontend::PluginAction:
272  case frontend::InheritanceView:
273    llvm_unreachable("Invalid kind!");
274
275  case frontend::ASTDump:                return "-ast-dump";
276  case frontend::ASTPrint:               return "-ast-print";
277  case frontend::ASTPrintXML:            return "-ast-print-xml";
278  case frontend::ASTView:                return "-ast-view";
279  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
280  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
281  case frontend::DumpTokens:             return "-dump-tokens";
282  case frontend::EmitAssembly:           return "-S";
283  case frontend::EmitBC:                 return "-emit-llvm-bc";
284  case frontend::EmitHTML:               return "-emit-html";
285  case frontend::EmitLLVM:               return "-emit-llvm";
286  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
287  case frontend::EmitObj:                return "-emit-obj";
288  case frontend::FixIt:                  return "-fixit";
289  case frontend::GeneratePCH:            return "-emit-pch";
290  case frontend::GeneratePTH:            return "-emit-pth";
291  case frontend::ParseNoop:              return "-parse-noop";
292  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
293  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
294  case frontend::PrintDeclContext:       return "-print-decl-contexts";
295  case frontend::PrintPreprocessedInput: return "-E";
296  case frontend::RewriteMacros:          return "-rewrite-macros";
297  case frontend::RewriteObjC:            return "-rewrite-objc";
298  case frontend::RewriteTest:            return "-rewrite-test";
299  case frontend::RunAnalysis:            return "-analyze";
300  case frontend::RunPreprocessorOnly:    return "-Eonly";
301  }
302
303  llvm_unreachable("Unexpected language kind!");
304  return 0;
305}
306
307static void FrontendOptsToArgs(const FrontendOptions &Opts,
308                               std::vector<std::string> &Res) {
309  if (!Opts.DebugCodeCompletionPrinter)
310    Res.push_back("-no-code-completion-debug-printer");
311  if (Opts.DisableFree)
312    Res.push_back("-disable-free");
313  if (Opts.EmptyInputOnly)
314    Res.push_back("-empty-input-only");
315  if (Opts.RelocatablePCH)
316    Res.push_back("-relocatable-pch");
317  if (Opts.ShowHelp)
318    Res.push_back("-help");
319  if (Opts.ShowMacrosInCodeCompletion)
320    Res.push_back("-code-completion-macros");
321  if (Opts.ShowStats)
322    Res.push_back("-print-stats");
323  if (Opts.ShowTimers)
324    Res.push_back("-ftime-report");
325  if (Opts.ShowVersion)
326    Res.push_back("-version");
327
328  bool NeedLang = false;
329  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
330    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
331        Opts.Inputs[i].first)
332      NeedLang = true;
333  if (NeedLang) {
334    Res.push_back("-x");
335    Res.push_back(getInputKindName(Opts.Inputs[0].first));
336  }
337  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
338    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
339           "Unable to represent this input vector!");
340    Res.push_back(Opts.Inputs[i].second);
341  }
342
343  if (!Opts.OutputFile.empty()) {
344    Res.push_back("-o");
345    Res.push_back(Opts.OutputFile);
346  }
347  if (!Opts.ViewClassInheritance.empty()) {
348    Res.push_back("-cxx-inheritance-view");
349    Res.push_back(Opts.ViewClassInheritance);
350  }
351  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
352    Res.push_back("-fixit-at");
353    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
354                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
355                  llvm::utostr(Opts.FixItLocations[i].Column));
356  }
357  if (!Opts.CodeCompletionAt.FileName.empty()) {
358    Res.push_back("-code-completion-at");
359    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
360                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
361                  llvm::utostr(Opts.CodeCompletionAt.Column));
362  }
363  if (Opts.ProgramAction != frontend::InheritanceView &&
364      Opts.ProgramAction != frontend::PluginAction)
365    Res.push_back(getActionName(Opts.ProgramAction));
366  if (!Opts.ActionName.empty()) {
367    Res.push_back("-plugin");
368    Res.push_back(Opts.ActionName);
369  }
370  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
371    Res.push_back("-load");
372    Res.push_back(Opts.Plugins[i]);
373  }
374  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
375    Res.push_back("-ast-merge");
376    Res.push_back(Opts.ASTMergeFiles[i]);
377  }
378}
379
380static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
381                                   std::vector<std::string> &Res) {
382  if (Opts.Sysroot != "/") {
383    Res.push_back("-isysroot");
384    Res.push_back(Opts.Sysroot);
385  }
386
387  /// User specified include entries.
388  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
389    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
390    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
391      llvm::llvm_report_error("Invalid option set!");
392    if (E.IsUserSupplied) {
393      if (E.Group == frontend::After) {
394        Res.push_back("-idirafter");
395      } else if (E.Group == frontend::Quoted) {
396        Res.push_back("-iquote");
397      } else if (E.Group == frontend::System) {
398        Res.push_back("-isystem");
399      } else {
400        assert(E.Group == frontend::Angled && "Invalid group!");
401        Res.push_back(E.IsFramework ? "-F" : "-I");
402      }
403    } else {
404      if (E.Group != frontend::Angled && E.Group != frontend::System)
405        llvm::llvm_report_error("Invalid option set!");
406      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
407                    "-iwithprefix");
408    }
409    Res.push_back(E.Path);
410  }
411
412  if (!Opts.EnvIncPath.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.CEnvIncPath.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.ObjCEnvIncPath.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.CXXEnvIncPath.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.ObjCXXEnvIncPath.empty()) {
429    // FIXME: Provide an option for this, and move env detection to driver.
430    llvm::llvm_report_error("Not yet implemented!");
431  }
432  if (!Opts.ResourceDir.empty()) {
433    Res.push_back("-resource-dir");
434    Res.push_back(Opts.ResourceDir);
435  }
436  if (!Opts.UseStandardIncludes)
437    Res.push_back("-nostdinc");
438  if (Opts.Verbose)
439    Res.push_back("-v");
440}
441
442static void LangOptsToArgs(const LangOptions &Opts,
443                           std::vector<std::string> &Res) {
444  LangOptions DefaultLangOpts;
445
446  // FIXME: Need to set -std to get all the implicit options.
447
448  // FIXME: We want to only pass options relative to the defaults, which
449  // requires constructing a target. :(
450  //
451  // It would be better to push the all target specific choices into the driver,
452  // so that everything below that was more uniform.
453
454  if (Opts.Trigraphs)
455    Res.push_back("-trigraphs");
456  // Implicit based on the input kind:
457  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
458  // Implicit based on the input language standard:
459  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
460  if (Opts.DollarIdents)
461    Res.push_back("-fdollars-in-identifiers");
462  if (Opts.Microsoft)
463    Res.push_back("-fms-extensions");
464  if (Opts.ObjCNonFragileABI)
465    Res.push_back("-fobjc-nonfragile-abi");
466  if (Opts.ObjCNonFragileABI2)
467    Res.push_back("-fobjc-nonfragile-abi2");
468  // NoInline is implicit.
469  if (!Opts.CXXOperatorNames)
470    Res.push_back("-fno-operator-names");
471  if (Opts.PascalStrings)
472    Res.push_back("-fpascal-strings");
473  if (Opts.CatchUndefined)
474    Res.push_back("-fcatch-undefined-behavior");
475  if (Opts.WritableStrings)
476    Res.push_back("-fwritable-strings");
477  if (!Opts.LaxVectorConversions)
478    Res.push_back("-fno-lax-vector-conversions");
479  if (Opts.AltiVec)
480    Res.push_back("-faltivec");
481  if (Opts.Exceptions)
482    Res.push_back("-fexceptions");
483  if (Opts.SjLjExceptions)
484    Res.push_back("-fsjlj-exceptions");
485  if (!Opts.RTTI)
486    Res.push_back("-fno-rtti");
487  if (!Opts.NeXTRuntime)
488    Res.push_back("-fgnu-runtime");
489  if (Opts.Freestanding)
490    Res.push_back("-ffreestanding");
491  if (Opts.NoBuiltin)
492    Res.push_back("-fno-builtin");
493  if (!Opts.AssumeSaneOperatorNew)
494    Res.push_back("-fno-assume-sane-operator-new");
495  if (!Opts.ThreadsafeStatics)
496    Res.push_back("-fno-threadsafe-statics");
497  if (Opts.POSIXThreads)
498    Res.push_back("-pthread");
499  if (Opts.Blocks)
500    Res.push_back("-fblocks");
501  if (Opts.EmitAllDecls)
502    Res.push_back("-femit-all-decls");
503  if (Opts.MathErrno)
504    Res.push_back("-fmath-errno");
505  if (Opts.OverflowChecking)
506    Res.push_back("-ftrapv");
507  if (Opts.HeinousExtensions)
508    Res.push_back("-fheinous-gnu-extensions");
509  // Optimize is implicit.
510  // OptimizeSize is implicit.
511  if (Opts.Static)
512    Res.push_back("-static-define");
513  if (Opts.PICLevel) {
514    Res.push_back("-pic-level");
515    Res.push_back(llvm::utostr(Opts.PICLevel));
516  }
517  if (Opts.ObjCGCBitmapPrint)
518    Res.push_back("-print-ivar-layout");
519  // FIXME: Don't forget to update when the default changes!
520  if (Opts.AccessControl)
521    Res.push_back("-faccess-control");
522  if (!Opts.CharIsSigned)
523    Res.push_back("-fno-signed-char");
524  if (Opts.ShortWChar)
525    Res.push_back("-fshort-wchar");
526  if (!Opts.ElideConstructors)
527    Res.push_back("-fno-elide-constructors");
528  if (Opts.getGCMode() != LangOptions::NonGC) {
529    if (Opts.getGCMode() == LangOptions::HybridGC) {
530      Res.push_back("-fobjc-gc");
531    } else {
532      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
533      Res.push_back("-fobjc-gc-only");
534    }
535  }
536  if (Opts.getVisibilityMode() != LangOptions::Default) {
537    Res.push_back("-fvisibility");
538    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
539      Res.push_back("hidden");
540    } else {
541      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
542             "Invalid visibility!");
543      Res.push_back("protected");
544    }
545  }
546  if (Opts.getStackProtectorMode() != 0) {
547    Res.push_back("-stack-protector");
548    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
549  }
550  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
551    Res.push_back("-ftemplate-depth");
552    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
553  }
554  if (!Opts.ObjCConstantStringClass.empty()) {
555    Res.push_back("-fconstant-string-class");
556    Res.push_back(Opts.ObjCConstantStringClass);
557  }
558}
559
560static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
561                                   std::vector<std::string> &Res) {
562  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
563    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
564                  Opts.Macros[i].first);
565  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
566    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
567    Res.push_back("-include");
568    Res.push_back(Opts.Includes[i]);
569  }
570  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
571    Res.push_back("-imacros");
572    Res.push_back(Opts.MacroIncludes[i]);
573  }
574  if (!Opts.UsePredefines)
575    Res.push_back("-undef");
576  if (!Opts.ImplicitPCHInclude.empty()) {
577    Res.push_back("-include-pch");
578    Res.push_back(Opts.ImplicitPCHInclude);
579  }
580  if (!Opts.ImplicitPTHInclude.empty()) {
581    Res.push_back("-include-pth");
582    Res.push_back(Opts.ImplicitPTHInclude);
583  }
584  if (!Opts.TokenCache.empty()) {
585    if (Opts.ImplicitPTHInclude.empty()) {
586      Res.push_back("-token-cache");
587      Res.push_back(Opts.TokenCache);
588    } else
589      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
590             "Unsupported option combination!");
591  }
592  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
593    Res.push_back("-remap-file");
594    Res.push_back(Opts.RemappedFiles[i].first + ";" +
595                  Opts.RemappedFiles[i].second);
596  }
597}
598
599static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
600                                         std::vector<std::string> &Res) {
601  if (!Opts.ShowCPP && !Opts.ShowMacros)
602    llvm::llvm_report_error("Invalid option combination!");
603
604  if (Opts.ShowCPP && Opts.ShowMacros)
605    Res.push_back("-dD");
606  else if (!Opts.ShowCPP && Opts.ShowMacros)
607    Res.push_back("-dM");
608
609  if (!Opts.ShowLineMarkers)
610    Res.push_back("-P");
611  if (Opts.ShowComments)
612    Res.push_back("-C");
613  if (Opts.ShowMacroComments)
614    Res.push_back("-CC");
615}
616
617static void TargetOptsToArgs(const TargetOptions &Opts,
618                             std::vector<std::string> &Res) {
619  Res.push_back("-triple");
620  Res.push_back(Opts.Triple);
621  if (!Opts.CPU.empty()) {
622    Res.push_back("-target-cpu");
623    Res.push_back(Opts.CPU);
624  }
625  if (!Opts.ABI.empty()) {
626    Res.push_back("-target-abi");
627    Res.push_back(Opts.ABI);
628  }
629  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
630    Res.push_back("-target-feature");
631    Res.push_back(Opts.Features[i]);
632  }
633}
634
635void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
636  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
637  CodeGenOptsToArgs(getCodeGenOpts(), Res);
638  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
639  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
640  FrontendOptsToArgs(getFrontendOpts(), Res);
641  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
642  LangOptsToArgs(getLangOpts(), Res);
643  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
644  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
645  TargetOptsToArgs(getTargetOpts(), Res);
646}
647
648//===----------------------------------------------------------------------===//
649// Deserialization (to args)
650//===----------------------------------------------------------------------===//
651
652using namespace clang::driver;
653using namespace clang::driver::cc1options;
654
655static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
656                                       llvm::StringRef Default = "") {
657  if (Arg *A = Args.getLastArg(ID))
658    return A->getValue(Args);
659  return Default;
660}
661
662static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
663                              int Default, Diagnostic &Diags) {
664  Arg *A = Args.getLastArg(ID);
665  if (!A)
666    return Default;
667
668  int Res = Default;
669  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
670    Diags.Report(diag::err_drv_invalid_int_value)
671        << A->getAsString(Args) << A->getValue(Args);
672
673  return Res;
674}
675
676static std::vector<std::string>
677getAllArgValues(ArgList &Args, cc1options::ID ID) {
678  llvm::SmallVector<const char *, 16> Values;
679  Args.AddAllArgValues(Values, ID);
680  return std::vector<std::string>(Values.begin(), Values.end());
681}
682
683//
684
685static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
686                              Diagnostic &Diags) {
687  using namespace cc1options;
688
689  Opts.AnalysisList.clear();
690#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
691  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
692#include "clang/Frontend/Analyses.def"
693
694  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
695    llvm::StringRef Name = A->getValue(Args);
696    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
697#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
698      .Case(CMDFLAG, NAME##Model)
699#include "clang/Frontend/Analyses.def"
700      .Default(NumStores);
701    // FIXME: Error handling.
702    if (Value == NumStores)
703      Diags.Report(diag::err_drv_invalid_value)
704        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
705    else
706      Opts.AnalysisStoreOpt = Value;
707  }
708
709  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
710    llvm::StringRef Name = A->getValue(Args);
711    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
712#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
713      .Case(CMDFLAG, NAME##Model)
714#include "clang/Frontend/Analyses.def"
715      .Default(NumConstraints);
716    // FIXME: Error handling.
717    if (Value == NumConstraints)
718      Diags.Report(diag::err_drv_invalid_value)
719        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
720    else
721      Opts.AnalysisConstraintsOpt = Value;
722  }
723
724  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
725    llvm::StringRef Name = A->getValue(Args);
726    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
727#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
728      .Case(CMDFLAG, PD_##NAME)
729#include "clang/Frontend/Analyses.def"
730      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
731    // FIXME: Error handling.
732    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
733      Diags.Report(diag::err_drv_invalid_value)
734        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
735    else
736      Opts.AnalysisDiagOpt = Value;
737  }
738
739  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
740  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
741  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
742  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
743  Opts.AnalyzeNestedBlocks =
744    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
745  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
746  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
747  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
748  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
749  Opts.EnableExperimentalInternalChecks =
750    Args.hasArg(OPT_analyzer_experimental_internal_checks);
751  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
752}
753
754static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
755                             Diagnostic &Diags) {
756  using namespace cc1options;
757  // -Os implies -O2
758  if (Args.hasArg(OPT_Os))
759    Opts.OptimizationLevel = 2;
760  else {
761    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
762    if (Opts.OptimizationLevel > 3) {
763      Diags.Report(diag::err_drv_invalid_value)
764        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
765      Opts.OptimizationLevel = 3;
766    }
767  }
768
769  // We must always run at least the always inlining pass.
770  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
771    : CodeGenOptions::OnlyAlwaysInlining;
772
773  Opts.DebugInfo = Args.hasArg(OPT_g);
774  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
775  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
776  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
777  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
778  Opts.NoCommon = Args.hasArg(OPT_fno_common);
779  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
780  Opts.OptimizeSize = Args.hasArg(OPT_Os);
781  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
782
783  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
784  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
785  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
786  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
787  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
788  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
789  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
790  Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
791  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
792  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
793  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
794  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
795
796  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
797  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
798}
799
800static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
801                                      ArgList &Args) {
802  using namespace cc1options;
803  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
804  Opts.Targets = getAllArgValues(Args, OPT_MT);
805  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
806  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
807}
808
809static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
810                                Diagnostic &Diags) {
811  using namespace cc1options;
812  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
813  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
814  Opts.Pedantic = Args.hasArg(OPT_pedantic);
815  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
816  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
817  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
818  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
819  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
820  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
821  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
822  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
823  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
824  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
825  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
826                                    DiagnosticOptions::DefaultTabStop, Diags);
827  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
828    Diags.Report(diag::warn_ignoring_ftabstop_value)
829      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
830    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
831  }
832  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
833  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
834  Opts.Warnings = getAllArgValues(Args, OPT_W);
835}
836
837static FrontendOptions::InputKind
838ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
839  using namespace cc1options;
840  Opts.ProgramAction = frontend::ParseSyntaxOnly;
841  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
842    switch (A->getOption().getID()) {
843    default:
844      assert(0 && "Invalid option in group!");
845    case OPT_ast_dump:
846      Opts.ProgramAction = frontend::ASTDump; break;
847    case OPT_ast_print:
848      Opts.ProgramAction = frontend::ASTPrint; break;
849    case OPT_ast_print_xml:
850      Opts.ProgramAction = frontend::ASTPrintXML; break;
851    case OPT_ast_view:
852      Opts.ProgramAction = frontend::ASTView; break;
853    case OPT_dump_raw_tokens:
854      Opts.ProgramAction = frontend::DumpRawTokens; break;
855    case OPT_dump_record_layouts:
856      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
857    case OPT_dump_tokens:
858      Opts.ProgramAction = frontend::DumpTokens; break;
859    case OPT_S:
860      Opts.ProgramAction = frontend::EmitAssembly; break;
861    case OPT_emit_llvm_bc:
862      Opts.ProgramAction = frontend::EmitBC; break;
863    case OPT_emit_html:
864      Opts.ProgramAction = frontend::EmitHTML; break;
865    case OPT_emit_llvm:
866      Opts.ProgramAction = frontend::EmitLLVM; break;
867    case OPT_emit_llvm_only:
868      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
869    case OPT_emit_obj:
870      Opts.ProgramAction = frontend::EmitObj; break;
871    case OPT_fixit:
872      Opts.ProgramAction = frontend::FixIt; break;
873    case OPT_emit_pch:
874      Opts.ProgramAction = frontend::GeneratePCH; break;
875    case OPT_emit_pth:
876      Opts.ProgramAction = frontend::GeneratePTH; break;
877    case OPT_parse_noop:
878      Opts.ProgramAction = frontend::ParseNoop; break;
879    case OPT_parse_print_callbacks:
880      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
881    case OPT_fsyntax_only:
882      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
883    case OPT_print_decl_contexts:
884      Opts.ProgramAction = frontend::PrintDeclContext; break;
885    case OPT_E:
886      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
887    case OPT_rewrite_macros:
888      Opts.ProgramAction = frontend::RewriteMacros; break;
889    case OPT_rewrite_objc:
890      Opts.ProgramAction = frontend::RewriteObjC; break;
891    case OPT_rewrite_test:
892      Opts.ProgramAction = frontend::RewriteTest; break;
893    case OPT_analyze:
894      Opts.ProgramAction = frontend::RunAnalysis; break;
895    case OPT_Eonly:
896      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
897    }
898  }
899  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
900    Opts.ProgramAction = frontend::PluginAction;
901    Opts.ActionName = A->getValue(Args);
902  }
903
904  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
905    Opts.CodeCompletionAt =
906      ParsedSourceLocation::FromString(A->getValue(Args));
907    if (Opts.CodeCompletionAt.FileName.empty())
908      Diags.Report(diag::err_drv_invalid_value)
909        << A->getAsString(Args) << A->getValue(Args);
910  }
911  Opts.DebugCodeCompletionPrinter =
912    !Args.hasArg(OPT_no_code_completion_debug_printer);
913  Opts.DisableFree = Args.hasArg(OPT_disable_free);
914  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
915
916  Opts.FixItLocations.clear();
917  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
918         ie = Args.filtered_end(); it != ie; ++it) {
919    const char *Loc = it->getValue(Args);
920    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
921
922    if (PSL.FileName.empty()) {
923      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
924      continue;
925    }
926
927    Opts.FixItLocations.push_back(PSL);
928  }
929
930  Opts.OutputFile = getLastArgValue(Args, OPT_o);
931  Opts.Plugins = getAllArgValues(Args, OPT_load);
932  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
933  Opts.ShowHelp = Args.hasArg(OPT_help);
934  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
935  Opts.ShowStats = Args.hasArg(OPT_print_stats);
936  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
937  Opts.ShowVersion = Args.hasArg(OPT_version);
938  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
939  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
940
941  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
942  if (const Arg *A = Args.getLastArg(OPT_x)) {
943    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
944      .Case("c", FrontendOptions::IK_C)
945      .Case("cl", FrontendOptions::IK_OpenCL)
946      .Case("c", FrontendOptions::IK_C)
947      .Case("cl", FrontendOptions::IK_OpenCL)
948      .Case("c++", FrontendOptions::IK_CXX)
949      .Case("objective-c", FrontendOptions::IK_ObjC)
950      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
951      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
952      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
953      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
954      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
955      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
956      .Case("c-header", FrontendOptions::IK_C)
957      .Case("objective-c-header", FrontendOptions::IK_ObjC)
958      .Case("c++-header", FrontendOptions::IK_CXX)
959      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
960      .Case("ast", FrontendOptions::IK_AST)
961      .Default(FrontendOptions::IK_None);
962    if (DashX == FrontendOptions::IK_None)
963      Diags.Report(diag::err_drv_invalid_value)
964        << A->getAsString(Args) << A->getValue(Args);
965  }
966
967  // '-' is the default input if none is given.
968  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
969  Opts.Inputs.clear();
970  if (Inputs.empty())
971    Inputs.push_back("-");
972  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
973    FrontendOptions::InputKind IK = DashX;
974    if (IK == FrontendOptions::IK_None) {
975      IK = FrontendOptions::getInputKindForExtension(
976        llvm::StringRef(Inputs[i]).rsplit('.').second);
977      // FIXME: Remove this hack.
978      if (i == 0)
979        DashX = IK;
980    }
981    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
982  }
983
984  return DashX;
985}
986
987std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
988                                                 void *MainAddr) {
989  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
990
991  if (!P.isEmpty()) {
992    P.eraseComponent();  // Remove /clang from foo/bin/clang
993    P.eraseComponent();  // Remove /bin   from foo/bin
994
995    // Get foo/lib/clang/<version>/include
996    P.appendComponent("lib");
997    P.appendComponent("clang");
998    P.appendComponent(CLANG_VERSION_STRING);
999  }
1000
1001  return P.str();
1002}
1003
1004static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1005  using namespace cc1options;
1006  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1007  Opts.Verbose = Args.hasArg(OPT_v);
1008  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1009  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1010  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1011
1012  // Add -I... and -F... options in order.
1013  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1014         ie = Args.filtered_end(); it != ie; ++it)
1015    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1016                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1017
1018  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1019  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1020  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1021                                             OPT_iwithprefixbefore),
1022         ie = Args.filtered_end(); it != ie; ++it) {
1023    if (it->getOption().matches(OPT_iprefix))
1024      Prefix = it->getValue(Args);
1025    else if (it->getOption().matches(OPT_iwithprefix))
1026      Opts.AddPath(Prefix.str() + it->getValue(Args),
1027                   frontend::System, false, false);
1028    else
1029      Opts.AddPath(Prefix.str() + it->getValue(Args),
1030                   frontend::Angled, false, false);
1031  }
1032
1033  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1034         ie = Args.filtered_end(); it != ie; ++it)
1035    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1036  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1037         ie = Args.filtered_end(); it != ie; ++it)
1038    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1039  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1040         ie = Args.filtered_end(); it != ie; ++it)
1041    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1042
1043  // FIXME: Need options for the various environment variables!
1044}
1045
1046static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1047                          FrontendOptions::InputKind IK,
1048                          Diagnostic &Diags) {
1049  // FIXME: Cleanup per-file based stuff.
1050
1051  // Set some properties which depend soley on the input kind; it would be nice
1052  // to move these to the language standard, and have the driver resolve the
1053  // input kind + language standard.
1054  if (IK == FrontendOptions::IK_Asm) {
1055    Opts.AsmPreprocessor = 1;
1056  } else if (IK == FrontendOptions::IK_ObjC ||
1057             IK == FrontendOptions::IK_ObjCXX ||
1058             IK == FrontendOptions::IK_PreprocessedObjC ||
1059             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1060    Opts.ObjC1 = Opts.ObjC2 = 1;
1061  }
1062
1063  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1064  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1065    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1066#define LANGSTANDARD(id, name, desc, features) \
1067      .Case(name, LangStandard::lang_##id)
1068#include "clang/Frontend/LangStandards.def"
1069      .Default(LangStandard::lang_unspecified);
1070    if (LangStd == LangStandard::lang_unspecified)
1071      Diags.Report(diag::err_drv_invalid_value)
1072        << A->getAsString(Args) << A->getValue(Args);
1073  }
1074
1075  if (LangStd == LangStandard::lang_unspecified) {
1076    // Based on the base language, pick one.
1077    switch (IK) {
1078    case FrontendOptions::IK_None:
1079    case FrontendOptions::IK_AST:
1080      assert(0 && "Invalid input kind!");
1081    case FrontendOptions::IK_OpenCL:
1082      LangStd = LangStandard::lang_opencl;
1083      break;
1084    case FrontendOptions::IK_Asm:
1085    case FrontendOptions::IK_C:
1086    case FrontendOptions::IK_PreprocessedC:
1087    case FrontendOptions::IK_ObjC:
1088    case FrontendOptions::IK_PreprocessedObjC:
1089      LangStd = LangStandard::lang_gnu99;
1090      break;
1091    case FrontendOptions::IK_CXX:
1092    case FrontendOptions::IK_PreprocessedCXX:
1093    case FrontendOptions::IK_ObjCXX:
1094    case FrontendOptions::IK_PreprocessedObjCXX:
1095      LangStd = LangStandard::lang_gnucxx98;
1096      break;
1097    }
1098  }
1099
1100  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1101  Opts.BCPLComment = Std.hasBCPLComments();
1102  Opts.C99 = Std.isC99();
1103  Opts.CPlusPlus = Std.isCPlusPlus();
1104  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1105  Opts.Digraphs = Std.hasDigraphs();
1106  Opts.GNUMode = Std.isGNUMode();
1107  Opts.GNUInline = !Std.isC99();
1108  Opts.HexFloats = Std.hasHexFloats();
1109  Opts.ImplicitInt = Std.hasImplicitInt();
1110
1111  // OpenCL has some additional defaults.
1112  if (LangStd == LangStandard::lang_opencl) {
1113    Opts.OpenCL = 1;
1114    Opts.AltiVec = 1;
1115    Opts.CXXOperatorNames = 1;
1116    Opts.LaxVectorConversions = 1;
1117  }
1118
1119  // OpenCL and C++ both have bool, true, false keywords.
1120  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1121
1122  if (Opts.CPlusPlus)
1123    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1124
1125  if (Args.hasArg(OPT_fobjc_gc_only))
1126    Opts.setGCMode(LangOptions::GCOnly);
1127  else if (Args.hasArg(OPT_fobjc_gc))
1128    Opts.setGCMode(LangOptions::HybridGC);
1129
1130  if (Args.hasArg(OPT_print_ivar_layout))
1131    Opts.ObjCGCBitmapPrint = 1;
1132
1133  if (Args.hasArg(OPT_faltivec))
1134    Opts.AltiVec = 1;
1135
1136  if (Args.hasArg(OPT_pthread))
1137    Opts.POSIXThreads = 1;
1138
1139  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1140                                        "default");
1141  if (Vis == "default")
1142    Opts.setVisibilityMode(LangOptions::Default);
1143  else if (Vis == "hidden")
1144    Opts.setVisibilityMode(LangOptions::Hidden);
1145  else if (Vis == "protected")
1146    Opts.setVisibilityMode(LangOptions::Protected);
1147  else
1148    Diags.Report(diag::err_drv_invalid_value)
1149      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1150
1151  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1152
1153  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1154  // is specified, or -std is set to a conforming mode.
1155  Opts.Trigraphs = !Opts.GNUMode;
1156  if (Args.hasArg(OPT_trigraphs))
1157    Opts.Trigraphs = 1;
1158
1159  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1160                                   OPT_fno_dollars_in_identifiers,
1161                                   !Opts.AsmPreprocessor);
1162  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1163  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1164  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1165  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1166    Opts.LaxVectorConversions = 0;
1167  if (Args.hasArg(OPT_fno_threadsafe_statics))
1168    Opts.ThreadsafeStatics = 0;
1169  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1170  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1171  Opts.Blocks = Args.hasArg(OPT_fblocks);
1172  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1173  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1174  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1175  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1176  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1177  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1178  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1179  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1180  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1181  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1182                                               Diags);
1183  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1184  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1185                                                 OPT_fconstant_string_class);
1186  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1187  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1188  if (Opts.ObjCNonFragileABI2)
1189    Opts.ObjCNonFragileABI = true;
1190  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1191  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1192  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1193  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1194  Opts.Static = Args.hasArg(OPT_static_define);
1195  Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1196  Opts.OptimizeSize = 0;
1197
1198  // FIXME: Eliminate this dependency.
1199  unsigned Opt =
1200    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1201  Opts.Optimize = Opt != 0;
1202
1203  // This is the __NO_INLINE__ define, which just depends on things like the
1204  // optimization level and -fno-inline, not actually whether the backend has
1205  // inlining enabled.
1206  //
1207  // FIXME: This is affected by other options (-fno-inline).
1208  Opts.NoInline = !Opt;
1209
1210  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1211  switch (SSP) {
1212  default:
1213    Diags.Report(diag::err_drv_invalid_value)
1214      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1215    break;
1216  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1217  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1218  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1219  }
1220}
1221
1222static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1223                                  Diagnostic &Diags) {
1224  using namespace cc1options;
1225  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1226  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1227  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1228      Opts.TokenCache = A->getValue(Args);
1229  else
1230    Opts.TokenCache = Opts.ImplicitPTHInclude;
1231  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1232
1233  // Add macros from the command line.
1234  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1235         ie = Args.filtered_end(); it != ie; ++it) {
1236    if (it->getOption().matches(OPT_D))
1237      Opts.addMacroDef(it->getValue(Args));
1238    else
1239      Opts.addMacroUndef(it->getValue(Args));
1240  }
1241
1242  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1243
1244  // Add the ordered list of -includes.
1245  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1246                                             OPT_include_pth),
1247         ie = Args.filtered_end(); it != ie; ++it) {
1248    // PCH is handled specially, we need to extra the original include path.
1249    if (it->getOption().matches(OPT_include_pch)) {
1250      std::string OriginalFile =
1251        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1252      if (OriginalFile.empty())
1253        continue;
1254
1255      Opts.Includes.push_back(OriginalFile);
1256    } else
1257      Opts.Includes.push_back(it->getValue(Args));
1258  }
1259
1260  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1261         ie = Args.filtered_end(); it != ie; ++it) {
1262    std::pair<llvm::StringRef,llvm::StringRef> Split =
1263      llvm::StringRef(it->getValue(Args)).split(';');
1264
1265    if (Split.second.empty()) {
1266      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1267      continue;
1268    }
1269
1270    Opts.addRemappedFile(Split.first, Split.second);
1271  }
1272}
1273
1274static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1275                                        ArgList &Args) {
1276  using namespace cc1options;
1277  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1278  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1279  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1280  Opts.ShowComments = Args.hasArg(OPT_C);
1281  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1282}
1283
1284static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1285  using namespace cc1options;
1286  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1287  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1288  Opts.Triple = getLastArgValue(Args, OPT_triple);
1289  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1290
1291  // Use the host triple if unspecified.
1292  if (Opts.Triple.empty())
1293    Opts.Triple = llvm::sys::getHostTriple();
1294}
1295
1296//
1297
1298void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1299                                        const char **ArgBegin,
1300                                        const char **ArgEnd,
1301                                        Diagnostic &Diags) {
1302  // Parse the arguments.
1303  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1304  unsigned MissingArgIndex, MissingArgCount;
1305  llvm::OwningPtr<InputArgList> Args(
1306    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1307
1308  // Check for missing argument error.
1309  if (MissingArgCount)
1310    Diags.Report(diag::err_drv_missing_argument)
1311      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1312
1313  // Issue errors on unknown arguments.
1314  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1315         ie = Args->filtered_end(); it != ie; ++it)
1316    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1317
1318  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1319  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1320  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1321  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1322  FrontendOptions::InputKind DashX =
1323    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1324  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1325  if (DashX != FrontendOptions::IK_AST)
1326    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1327  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1328  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1329  ParseTargetArgs(Res.getTargetOpts(), *Args);
1330}
1331