CompilerInvocation.cpp revision 6649014b792f8a4b1bc1e8be8f844a72220af508 
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/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
33//===----------------------------------------------------------------------===//
34// Initialization.
35//===----------------------------------------------------------------------===//
36
37CompilerInvocationBase::CompilerInvocationBase()
38  : LangOpts(new LangOptions()) {}
39
40CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
41  : llvm::RefCountedBase<CompilerInvocation>(),
42    LangOpts(new LangOptions(*X.getLangOpts())) {}
43
44//===----------------------------------------------------------------------===//
45// Utility functions.
46//===----------------------------------------------------------------------===//
47
48static const char *getAnalysisStoreName(AnalysisStores Kind) {
49  switch (Kind) {
50  default:
51    llvm_unreachable("Unknown analysis store!");
52#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
53  case NAME##Model: return CMDFLAG;
54#include "clang/Frontend/Analyses.def"
55  }
56}
57
58static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
59  switch (Kind) {
60  default:
61    llvm_unreachable("Unknown analysis constraints!");
62#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
63  case NAME##Model: return CMDFLAG;
64#include "clang/Frontend/Analyses.def"
65  }
66}
67
68static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
69  switch (Kind) {
70  default:
71    llvm_unreachable("Unknown analysis client!");
72#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
73  case PD_##NAME: return CMDFLAG;
74#include "clang/Frontend/Analyses.def"
75  }
76}
77
78static const char *getAnalysisPurgeModeName(AnalysisPurgeMode Kind) {
79  switch (Kind) {
80  default:
81    llvm_unreachable("Unknown analysis client!");
82#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
83  case NAME: return CMDFLAG;
84#include "clang/Frontend/Analyses.def"
85  }
86}
87
88//===----------------------------------------------------------------------===//
89// Serialization (to args)
90//===----------------------------------------------------------------------===//
91
92static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
93                               std::vector<std::string> &Res) {
94  if (Opts.ShowCheckerHelp)
95    Res.push_back("-analyzer-checker-help");
96  if (Opts.AnalysisStoreOpt != RegionStoreModel) {
97    Res.push_back("-analyzer-store");
98    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
99  }
100  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
101    Res.push_back("-analyzer-constraints");
102    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
103  }
104  if (Opts.AnalysisDiagOpt != PD_HTML) {
105    Res.push_back("-analyzer-output");
106    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
107  }
108  if (Opts.AnalysisPurgeOpt != PurgeStmt) {
109    Res.push_back("-analyzer-purge");
110    Res.push_back(getAnalysisPurgeModeName(Opts.AnalysisPurgeOpt));
111  }
112  if (!Opts.AnalyzeSpecificFunction.empty()) {
113    Res.push_back("-analyze-function");
114    Res.push_back(Opts.AnalyzeSpecificFunction);
115  }
116  if (Opts.AnalyzeAll)
117    Res.push_back("-analyzer-opt-analyze-headers");
118  if (Opts.AnalyzerDisplayProgress)
119    Res.push_back("-analyzer-display-progress");
120  if (Opts.AnalyzeNestedBlocks)
121    Res.push_back("-analyzer-opt-analyze-nested-blocks");
122  if (Opts.EagerlyAssume)
123    Res.push_back("-analyzer-eagerly-assume");
124  if (Opts.TrimGraph)
125    Res.push_back("-trim-egraph");
126  if (Opts.VisualizeEGDot)
127    Res.push_back("-analyzer-viz-egraph-graphviz");
128  if (Opts.VisualizeEGUbi)
129    Res.push_back("-analyzer-viz-egraph-ubigraph");
130
131  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
132    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
133    if (opt.second)
134      Res.push_back("-analyzer-disable-checker");
135    else
136      Res.push_back("-analyzer-checker");
137    Res.push_back(opt.first);
138  }
139}
140
141static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
142                              std::vector<std::string> &Res) {
143  if (Opts.DebugInfo)
144    Res.push_back("-g");
145  if (Opts.DisableLLVMOpts)
146    Res.push_back("-disable-llvm-optzns");
147  if (Opts.DisableRedZone)
148    Res.push_back("-disable-red-zone");
149  if (!Opts.DebugCompilationDir.empty()) {
150    Res.push_back("-fdebug-compilation-dir");
151    Res.push_back(Opts.DebugCompilationDir);
152  }
153  if (!Opts.DwarfDebugFlags.empty()) {
154    Res.push_back("-dwarf-debug-flags");
155    Res.push_back(Opts.DwarfDebugFlags);
156  }
157  if (Opts.ObjCRuntimeHasARC)
158    Res.push_back("-fobjc-runtime-has-arc");
159  if (Opts.ObjCRuntimeHasTerminate)
160    Res.push_back("-fobjc-runtime-has-terminate");
161  if (Opts.EmitGcovArcs)
162    Res.push_back("-femit-coverage-data");
163  if (Opts.EmitGcovNotes)
164    Res.push_back("-femit-coverage-notes");
165  if (!Opts.MergeAllConstants)
166    Res.push_back("-fno-merge-all-constants");
167  if (Opts.NoCommon)
168    Res.push_back("-fno-common");
169  if (Opts.ForbidGuardVariables)
170    Res.push_back("-fforbid-guard-variables");
171  if (Opts.UseRegisterSizedBitfieldAccess)
172    Res.push_back("-fuse-register-sized-bitfield-access");
173  if (Opts.NoImplicitFloat)
174    Res.push_back("-no-implicit-float");
175  if (Opts.OmitLeafFramePointer)
176    Res.push_back("-momit-leaf-frame-pointer");
177  if (Opts.OptimizeSize) {
178    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
179    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
180  } else if (Opts.OptimizationLevel != 0)
181    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
182  if (!Opts.MainFileName.empty()) {
183    Res.push_back("-main-file-name");
184    Res.push_back(Opts.MainFileName);
185  }
186  // SimplifyLibCalls is only derived.
187  // TimePasses is only derived.
188  // UnitAtATime is unused.
189  // Inlining is only derived.
190
191  // UnrollLoops is derived, but also accepts an option, no
192  // harm in pushing it back here.
193  if (Opts.UnrollLoops)
194    Res.push_back("-funroll-loops");
195  if (Opts.DataSections)
196    Res.push_back("-fdata-sections");
197  if (Opts.FunctionSections)
198    Res.push_back("-ffunction-sections");
199  if (Opts.AsmVerbose)
200    Res.push_back("-masm-verbose");
201  if (!Opts.CodeModel.empty()) {
202    Res.push_back("-mcode-model");
203    Res.push_back(Opts.CodeModel);
204  }
205  if (Opts.CUDAIsDevice)
206    Res.push_back("-fcuda-is-device");
207  if (!Opts.CXAAtExit)
208    Res.push_back("-fno-use-cxa-atexit");
209  if (Opts.CXXCtorDtorAliases)
210    Res.push_back("-mconstructor-aliases");
211  if (Opts.ObjCAutoRefCountExceptions)
212    Res.push_back("-fobjc-arc-eh");
213  if (!Opts.DebugPass.empty()) {
214    Res.push_back("-mdebug-pass");
215    Res.push_back(Opts.DebugPass);
216  }
217  if (Opts.DisableFPElim)
218    Res.push_back("-mdisable-fp-elim");
219  if (!Opts.FloatABI.empty()) {
220    Res.push_back("-mfloat-abi");
221    Res.push_back(Opts.FloatABI);
222  }
223  if (!Opts.LimitFloatPrecision.empty()) {
224    Res.push_back("-mlimit-float-precision");
225    Res.push_back(Opts.LimitFloatPrecision);
226  }
227  if (Opts.NoZeroInitializedInBSS)
228    Res.push_back("-mno-zero-initialized-bss");
229  switch (Opts.getObjCDispatchMethod()) {
230  case CodeGenOptions::Legacy:
231    break;
232  case CodeGenOptions::Mixed:
233    Res.push_back("-fobjc-dispatch-method=mixed");
234    break;
235  case CodeGenOptions::NonLegacy:
236    Res.push_back("-fobjc-dispatch-method=non-legacy");
237    break;
238  }
239  if (Opts.NumRegisterParameters) {
240    Res.push_back("-mregparm");
241    Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
242  }
243  if (Opts.NoGlobalMerge)
244    Res.push_back("-mno-global-merge");
245  if (Opts.NoExecStack)
246    Res.push_back("-mnoexecstack");
247  if (Opts.RelaxAll)
248    Res.push_back("-mrelax-all");
249  if (Opts.SaveTempLabels)
250    Res.push_back("-msave-temp-labels");
251  if (Opts.NoDwarf2CFIAsm)
252    Res.push_back("-fno-dwarf2-cfi-asm");
253  if (Opts.NoDwarfDirectoryAsm)
254    Res.push_back("-fno-dwarf-directory-asm");
255  if (Opts.SoftFloat)
256    Res.push_back("-msoft-float");
257  if (Opts.UnwindTables)
258    Res.push_back("-munwind-tables");
259  if (Opts.RelocationModel != "pic") {
260    Res.push_back("-mrelocation-model");
261    Res.push_back(Opts.RelocationModel);
262  }
263  if (!Opts.VerifyModule)
264    Res.push_back("-disable-llvm-verifier");
265  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i) {
266    Res.push_back("-backend-option");
267    Res.push_back(Opts.BackendOptions[i]);
268  }
269}
270
271static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
272                                       std::vector<std::string> &Res) {
273  if (Opts.IncludeSystemHeaders)
274    Res.push_back("-sys-header-deps");
275  if (Opts.ShowHeaderIncludes)
276    Res.push_back("-H");
277  if (!Opts.HeaderIncludeOutputFile.empty()) {
278    Res.push_back("-header-include-file");
279    Res.push_back(Opts.HeaderIncludeOutputFile);
280  }
281  if (Opts.UsePhonyTargets)
282    Res.push_back("-MP");
283  if (!Opts.OutputFile.empty()) {
284    Res.push_back("-dependency-file");
285    Res.push_back(Opts.OutputFile);
286  }
287  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
288    Res.push_back("-MT");
289    Res.push_back(Opts.Targets[i]);
290  }
291}
292
293static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
294                                 std::vector<std::string> &Res) {
295  if (Opts.IgnoreWarnings)
296    Res.push_back("-w");
297  if (Opts.NoRewriteMacros)
298    Res.push_back("-Wno-rewrite-macros");
299  if (Opts.Pedantic)
300    Res.push_back("-pedantic");
301  if (Opts.PedanticErrors)
302    Res.push_back("-pedantic-errors");
303  if (!Opts.ShowColumn)
304    Res.push_back("-fno-show-column");
305  if (!Opts.ShowLocation)
306    Res.push_back("-fno-show-source-location");
307  if (!Opts.ShowCarets)
308    Res.push_back("-fno-caret-diagnostics");
309  if (!Opts.ShowFixits)
310    Res.push_back("-fno-diagnostics-fixit-info");
311  if (Opts.ShowSourceRanges)
312    Res.push_back("-fdiagnostics-print-source-range-info");
313  if (Opts.ShowParseableFixits)
314    Res.push_back("-fdiagnostics-parseable-fixits");
315  if (Opts.ShowColors)
316    Res.push_back("-fcolor-diagnostics");
317  if (Opts.VerifyDiagnostics)
318    Res.push_back("-verify");
319  if (Opts.ShowNames)
320    Res.push_back("-fdiagnostics-show-name");
321  if (Opts.ShowOptionNames)
322    Res.push_back("-fdiagnostics-show-option");
323  if (Opts.ShowCategories == 1)
324    Res.push_back("-fdiagnostics-show-category=id");
325  else if (Opts.ShowCategories == 2)
326    Res.push_back("-fdiagnostics-show-category=name");
327  switch (Opts.Format) {
328  case DiagnosticOptions::Clang:
329    Res.push_back("-fdiagnostics-format=clang"); break;
330  case DiagnosticOptions::Msvc:
331    Res.push_back("-fdiagnostics-format=msvc");  break;
332  case DiagnosticOptions::Vi:
333    Res.push_back("-fdiagnostics-format=vi");    break;
334  }
335  if (Opts.ErrorLimit) {
336    Res.push_back("-ferror-limit");
337    Res.push_back(llvm::utostr(Opts.ErrorLimit));
338  }
339  if (!Opts.DiagnosticLogFile.empty()) {
340    Res.push_back("-diagnostic-log-file");
341    Res.push_back(Opts.DiagnosticLogFile);
342  }
343  if (Opts.MacroBacktraceLimit
344                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
345    Res.push_back("-fmacro-backtrace-limit");
346    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
347  }
348  if (Opts.TemplateBacktraceLimit
349                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
350    Res.push_back("-ftemplate-backtrace-limit");
351    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
352  }
353
354  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
355    Res.push_back("-ftabstop");
356    Res.push_back(llvm::utostr(Opts.TabStop));
357  }
358  if (Opts.MessageLength) {
359    Res.push_back("-fmessage-length");
360    Res.push_back(llvm::utostr(Opts.MessageLength));
361  }
362  if (!Opts.DumpBuildInformation.empty()) {
363    Res.push_back("-dump-build-information");
364    Res.push_back(Opts.DumpBuildInformation);
365  }
366  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
367    Res.push_back("-W" + Opts.Warnings[i]);
368}
369
370static const char *getInputKindName(InputKind Kind) {
371  switch (Kind) {
372  case IK_None:              break;
373  case IK_AST:               return "ast";
374  case IK_Asm:               return "assembler-with-cpp";
375  case IK_C:                 return "c";
376  case IK_CXX:               return "c++";
377  case IK_LLVM_IR:           return "ir";
378  case IK_ObjC:              return "objective-c";
379  case IK_ObjCXX:            return "objective-c++";
380  case IK_OpenCL:            return "cl";
381  case IK_CUDA:              return "cuda";
382  case IK_PreprocessedC:     return "cpp-output";
383  case IK_PreprocessedCXX:   return "c++-cpp-output";
384  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
385  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
386  }
387
388  llvm_unreachable("Unexpected language kind!");
389  return 0;
390}
391
392static const char *getActionName(frontend::ActionKind Kind) {
393  switch (Kind) {
394  case frontend::PluginAction:
395    llvm_unreachable("Invalid kind!");
396
397  case frontend::ASTDump:                return "-ast-dump";
398  case frontend::ASTDumpXML:             return "-ast-dump-xml";
399  case frontend::ASTPrint:               return "-ast-print";
400  case frontend::ASTView:                return "-ast-view";
401  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
402  case frontend::DumpTokens:             return "-dump-tokens";
403  case frontend::EmitAssembly:           return "-S";
404  case frontend::EmitBC:                 return "-emit-llvm-bc";
405  case frontend::EmitHTML:               return "-emit-html";
406  case frontend::EmitLLVM:               return "-emit-llvm";
407  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
408  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
409  case frontend::EmitObj:                return "-emit-obj";
410  case frontend::FixIt:                  return "-fixit";
411  case frontend::GenerateModule:         return "-emit-module";
412  case frontend::GeneratePCH:            return "-emit-pch";
413  case frontend::GeneratePTH:            return "-emit-pth";
414  case frontend::InitOnly:               return "-init-only";
415  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
416  case frontend::PrintDeclContext:       return "-print-decl-contexts";
417  case frontend::PrintPreamble:          return "-print-preamble";
418  case frontend::PrintPreprocessedInput: return "-E";
419  case frontend::RewriteMacros:          return "-rewrite-macros";
420  case frontend::RewriteObjC:            return "-rewrite-objc";
421  case frontend::RewriteTest:            return "-rewrite-test";
422  case frontend::RunAnalysis:            return "-analyze";
423  case frontend::RunPreprocessorOnly:    return "-Eonly";
424  }
425
426  llvm_unreachable("Unexpected language kind!");
427  return 0;
428}
429
430static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
431                                 std::vector<std::string> &Res) {
432  if (!Opts.WorkingDir.empty()) {
433    Res.push_back("-working-directory");
434    Res.push_back(Opts.WorkingDir);
435  }
436}
437
438static void FrontendOptsToArgs(const FrontendOptions &Opts,
439                               std::vector<std::string> &Res) {
440  if (Opts.DisableFree)
441    Res.push_back("-disable-free");
442  if (Opts.RelocatablePCH)
443    Res.push_back("-relocatable-pch");
444  if (Opts.ShowHelp)
445    Res.push_back("-help");
446  if (Opts.ShowMacrosInCodeCompletion)
447    Res.push_back("-code-completion-macros");
448  if (Opts.ShowCodePatternsInCodeCompletion)
449    Res.push_back("-code-completion-patterns");
450  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
451    Res.push_back("-no-code-completion-globals");
452  if (Opts.ShowStats)
453    Res.push_back("-print-stats");
454  if (Opts.ShowTimers)
455    Res.push_back("-ftime-report");
456  if (Opts.ShowVersion)
457    Res.push_back("-version");
458  if (Opts.FixWhatYouCan)
459    Res.push_back("-fix-what-you-can");
460  switch (Opts.ARCMTAction) {
461  case FrontendOptions::ARCMT_None:
462    break;
463  case FrontendOptions::ARCMT_Check:
464    Res.push_back("-arcmt-check");
465    break;
466  case FrontendOptions::ARCMT_Modify:
467    Res.push_back("-arcmt-modify");
468    break;
469  case FrontendOptions::ARCMT_Migrate:
470    Res.push_back("-arcmt-migrate");
471    break;
472  }
473  if (!Opts.ARCMTMigrateDir.empty()) {
474    Res.push_back("-arcmt-migrate-directory");
475    Res.push_back(Opts.ARCMTMigrateDir);
476  }
477  if (!Opts.ARCMTMigrateReportOut.empty()) {
478    Res.push_back("-arcmt-migrate-report-output");
479    Res.push_back(Opts.ARCMTMigrateReportOut);
480  }
481  if (Opts.ARCMTMigrateEmitARCErrors)
482    Res.push_back("-arcmt-migrate-emit-errors");
483
484  bool NeedLang = false;
485  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
486    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
487        Opts.Inputs[i].first)
488      NeedLang = true;
489  if (NeedLang) {
490    Res.push_back("-x");
491    Res.push_back(getInputKindName(Opts.Inputs[0].first));
492  }
493  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
494    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
495           "Unable to represent this input vector!");
496    Res.push_back(Opts.Inputs[i].second);
497  }
498
499  if (!Opts.OutputFile.empty()) {
500    Res.push_back("-o");
501    Res.push_back(Opts.OutputFile);
502  }
503  if (!Opts.CodeCompletionAt.FileName.empty()) {
504    Res.push_back("-code-completion-at");
505    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
506                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
507                  llvm::utostr(Opts.CodeCompletionAt.Column));
508  }
509  if (Opts.ProgramAction != frontend::PluginAction)
510    Res.push_back(getActionName(Opts.ProgramAction));
511  if (!Opts.ActionName.empty()) {
512    Res.push_back("-plugin");
513    Res.push_back(Opts.ActionName);
514    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
515      Res.push_back("-plugin-arg-" + Opts.ActionName);
516      Res.push_back(Opts.PluginArgs[i]);
517    }
518  }
519  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
520    Res.push_back("-load");
521    Res.push_back(Opts.Plugins[i]);
522  }
523  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
524    Res.push_back("-add-plugin");
525    Res.push_back(Opts.AddPluginActions[i]);
526    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
527      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
528      Res.push_back(Opts.AddPluginArgs[i][ai]);
529    }
530  }
531  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
532    Res.push_back("-ast-merge");
533    Res.push_back(Opts.ASTMergeFiles[i]);
534  }
535  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
536    Res.push_back("-mllvm");
537    Res.push_back(Opts.LLVMArgs[i]);
538  }
539}
540
541static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
542                                   std::vector<std::string> &Res) {
543  if (Opts.Sysroot != "/") {
544    Res.push_back("-isysroot");
545    Res.push_back(Opts.Sysroot);
546  }
547
548  /// User specified include entries.
549  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
550    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
551    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
552      llvm::report_fatal_error("Invalid option set!");
553    if (E.IsUserSupplied) {
554      switch (E.Group) {
555      case frontend::After:
556        Res.push_back("-idirafter");
557        break;
558
559      case frontend::Quoted:
560        Res.push_back("-iquote");
561        break;
562
563      case frontend::System:
564        Res.push_back("-isystem");
565        break;
566
567      case frontend::IndexHeaderMap:
568        Res.push_back("-index-header-map");
569        Res.push_back(E.IsFramework? "-F" : "-I");
570        break;
571
572      case frontend::CSystem:
573        Res.push_back("-c-isystem");
574        break;
575
576      case frontend::CXXSystem:
577        Res.push_back("-cxx-isystem");
578        break;
579
580      case frontend::ObjCSystem:
581        Res.push_back("-objc-isystem");
582        break;
583
584      case frontend::ObjCXXSystem:
585        Res.push_back("-objcxx-isystem");
586        break;
587
588      case frontend::Angled:
589        Res.push_back(E.IsFramework ? "-F" : "-I");
590        break;
591      }
592    } else {
593      if (E.IsInternal) {
594        assert(E.Group == frontend::System && "Unexpected header search group");
595        if (E.ImplicitExternC)
596          Res.push_back("-internal-externc-isystem");
597        else
598          Res.push_back("-internal-isystem");
599      } else {
600        if (E.Group != frontend::Angled && E.Group != frontend::System)
601          llvm::report_fatal_error("Invalid option set!");
602        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
603                      "-iwithprefix");
604      }
605    }
606    Res.push_back(E.Path);
607  }
608
609  if (!Opts.ResourceDir.empty()) {
610    Res.push_back("-resource-dir");
611    Res.push_back(Opts.ResourceDir);
612  }
613  if (!Opts.ModuleCachePath.empty()) {
614    Res.push_back("-fmodule-cache-path");
615    Res.push_back(Opts.ModuleCachePath);
616  }
617  if (!Opts.UseStandardSystemIncludes)
618    Res.push_back("-nostdsysteminc");
619  if (!Opts.UseStandardCXXIncludes)
620    Res.push_back("-nostdinc++");
621  if (Opts.UseLibcxx)
622    Res.push_back("-stdlib=libc++");
623  if (Opts.Verbose)
624    Res.push_back("-v");
625}
626
627static void LangOptsToArgs(const LangOptions &Opts,
628                           std::vector<std::string> &Res) {
629  LangOptions DefaultLangOpts;
630
631  // FIXME: Need to set -std to get all the implicit options.
632
633  // FIXME: We want to only pass options relative to the defaults, which
634  // requires constructing a target. :(
635  //
636  // It would be better to push the all target specific choices into the driver,
637  // so that everything below that was more uniform.
638
639  if (Opts.Trigraphs)
640    Res.push_back("-trigraphs");
641  // Implicit based on the input kind:
642  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
643  // Implicit based on the input language standard:
644  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
645  if (Opts.DollarIdents)
646    Res.push_back("-fdollars-in-identifiers");
647  if (Opts.GNUMode && !Opts.GNUKeywords)
648    Res.push_back("-fno-gnu-keywords");
649  if (!Opts.GNUMode && Opts.GNUKeywords)
650    Res.push_back("-fgnu-keywords");
651  if (Opts.MicrosoftExt)
652    Res.push_back("-fms-extensions");
653  if (Opts.MicrosoftMode)
654    Res.push_back("-fms-compatibility");
655  if (Opts.MSCVersion != 0)
656    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
657  if (Opts.Borland)
658    Res.push_back("-fborland-extensions");
659  if (!Opts.ObjCNonFragileABI)
660    Res.push_back("-fobjc-fragile-abi");
661  if (Opts.ObjCDefaultSynthProperties)
662    Res.push_back("-fobjc-default-synthesize-properties");
663  // NoInline is implicit.
664  if (!Opts.CXXOperatorNames)
665    Res.push_back("-fno-operator-names");
666  if (Opts.PascalStrings)
667    Res.push_back("-fpascal-strings");
668  if (Opts.CatchUndefined)
669    Res.push_back("-fcatch-undefined-behavior");
670  if (Opts.AddressSanitizer)
671    Res.push_back("-faddress-sanitizer");
672  if (Opts.WritableStrings)
673    Res.push_back("-fwritable-strings");
674  if (Opts.ConstStrings)
675    Res.push_back("-fconst-strings");
676  if (!Opts.LaxVectorConversions)
677    Res.push_back("-fno-lax-vector-conversions");
678  if (Opts.AltiVec)
679    Res.push_back("-faltivec");
680  if (Opts.Exceptions)
681    Res.push_back("-fexceptions");
682  if (Opts.ObjCExceptions)
683    Res.push_back("-fobjc-exceptions");
684  if (Opts.CXXExceptions)
685    Res.push_back("-fcxx-exceptions");
686  if (Opts.SjLjExceptions)
687    Res.push_back("-fsjlj-exceptions");
688  if (Opts.TraditionalCPP)
689    Res.push_back("-traditional-cpp");
690  if (!Opts.RTTI)
691    Res.push_back("-fno-rtti");
692  if (Opts.MSBitfields)
693    Res.push_back("-mms-bitfields");
694  if (!Opts.NeXTRuntime)
695    Res.push_back("-fgnu-runtime");
696  if (Opts.Freestanding)
697    Res.push_back("-ffreestanding");
698  if (Opts.NoBuiltin)
699    Res.push_back("-fno-builtin");
700  if (!Opts.AssumeSaneOperatorNew)
701    Res.push_back("-fno-assume-sane-operator-new");
702  if (!Opts.ThreadsafeStatics)
703    Res.push_back("-fno-threadsafe-statics");
704  if (Opts.POSIXThreads)
705    Res.push_back("-pthread");
706  if (Opts.Blocks)
707    Res.push_back("-fblocks");
708  if (Opts.BlocksRuntimeOptional)
709    Res.push_back("-fblocks-runtime-optional");
710  if (Opts.EmitAllDecls)
711    Res.push_back("-femit-all-decls");
712  if (Opts.MathErrno)
713    Res.push_back("-fmath-errno");
714  switch (Opts.getSignedOverflowBehavior()) {
715  case LangOptions::SOB_Undefined: break;
716  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
717  case LangOptions::SOB_Trapping:
718    Res.push_back("-ftrapv");
719    if (!Opts.OverflowHandler.empty()) {
720      Res.push_back("-ftrapv-handler");
721      Res.push_back(Opts.OverflowHandler);
722    }
723    break;
724  }
725  if (Opts.HeinousExtensions)
726    Res.push_back("-fheinous-gnu-extensions");
727  // Optimize is implicit.
728  // OptimizeSize is implicit.
729  if (Opts.Static)
730    Res.push_back("-static-define");
731  if (Opts.DumpRecordLayouts)
732    Res.push_back("-fdump-record-layouts");
733  if (Opts.DumpVTableLayouts)
734    Res.push_back("-fdump-vtable-layouts");
735  if (Opts.NoBitFieldTypeAlign)
736    Res.push_back("-fno-bitfield-type-alignment");
737  if (Opts.PICLevel) {
738    Res.push_back("-pic-level");
739    Res.push_back(llvm::utostr(Opts.PICLevel));
740  }
741  if (Opts.ObjCGCBitmapPrint)
742    Res.push_back("-print-ivar-layout");
743  if (Opts.NoConstantCFStrings)
744    Res.push_back("-fno-constant-cfstrings");
745  if (!Opts.AccessControl)
746    Res.push_back("-fno-access-control");
747  if (!Opts.CharIsSigned)
748    Res.push_back("-fno-signed-char");
749  if (Opts.ShortWChar)
750    Res.push_back("-fshort-wchar");
751  if (!Opts.ElideConstructors)
752    Res.push_back("-fno-elide-constructors");
753  if (Opts.getGC() != LangOptions::NonGC) {
754    if (Opts.getGC() == LangOptions::HybridGC) {
755      Res.push_back("-fobjc-gc");
756    } else {
757      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
758      Res.push_back("-fobjc-gc-only");
759    }
760  }
761  if (Opts.ObjCAutoRefCount)
762    Res.push_back("-fobjc-arc");
763  if (Opts.ObjCRuntimeHasWeak)
764    Res.push_back("-fobjc-runtime-has-weak");
765  if (!Opts.ObjCInferRelatedResultType)
766    Res.push_back("-fno-objc-infer-related-result-type");
767
768  if (Opts.AppleKext)
769    Res.push_back("-fapple-kext");
770
771  if (Opts.getVisibilityMode() != DefaultVisibility) {
772    Res.push_back("-fvisibility");
773    if (Opts.getVisibilityMode() == HiddenVisibility) {
774      Res.push_back("hidden");
775    } else {
776      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
777             "Invalid visibility!");
778      Res.push_back("protected");
779    }
780  }
781  if (Opts.InlineVisibilityHidden)
782    Res.push_back("-fvisibility-inlines-hidden");
783
784  if (Opts.getStackProtector() != 0) {
785    Res.push_back("-stack-protector");
786    Res.push_back(llvm::utostr(Opts.getStackProtector()));
787  }
788  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
789    Res.push_back("-ftemplate-depth");
790    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
791  }
792  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth) {
793    Res.push_back("-fconstexpr-depth");
794    Res.push_back(llvm::utostr(Opts.ConstexprCallDepth));
795  }
796  if (!Opts.ObjCConstantStringClass.empty()) {
797    Res.push_back("-fconstant-string-class");
798    Res.push_back(Opts.ObjCConstantStringClass);
799  }
800  if (Opts.FakeAddressSpaceMap)
801    Res.push_back("-ffake-address-space-map");
802  if (Opts.ParseUnknownAnytype)
803    Res.push_back("-funknown-anytype");
804  if (Opts.DebuggerSupport)
805    Res.push_back("-fdebugger-support");
806  if (Opts.DelayedTemplateParsing)
807    Res.push_back("-fdelayed-template-parsing");
808  if (Opts.Deprecated)
809    Res.push_back("-fdeprecated-macro");
810  if (Opts.ApplePragmaPack)
811    Res.push_back("-fapple-pragma-pack");
812  if (!Opts.CurrentModule.empty())
813    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
814}
815
816static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
817                                   std::vector<std::string> &Res) {
818  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
819    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
820                  Opts.Macros[i].first);
821  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
822    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
823    Res.push_back("-include");
824    Res.push_back(Opts.Includes[i]);
825  }
826  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
827    Res.push_back("-imacros");
828    Res.push_back(Opts.MacroIncludes[i]);
829  }
830  if (!Opts.UsePredefines)
831    Res.push_back("-undef");
832  if (Opts.DetailedRecord)
833    Res.push_back("-detailed-preprocessing-record");
834  if (!Opts.ImplicitPCHInclude.empty()) {
835    Res.push_back("-include-pch");
836    Res.push_back(Opts.ImplicitPCHInclude);
837  }
838  if (!Opts.ImplicitPTHInclude.empty()) {
839    Res.push_back("-include-pth");
840    Res.push_back(Opts.ImplicitPTHInclude);
841  }
842  if (!Opts.TokenCache.empty()) {
843    if (Opts.ImplicitPTHInclude.empty()) {
844      Res.push_back("-token-cache");
845      Res.push_back(Opts.TokenCache);
846    } else
847      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
848             "Unsupported option combination!");
849  }
850  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i) {
851    Res.push_back("-chain-include");
852    Res.push_back(Opts.ChainedIncludes[i]);
853  }
854  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
855    Res.push_back("-remap-file");
856    Res.push_back(Opts.RemappedFiles[i].first + ";" +
857                  Opts.RemappedFiles[i].second);
858  }
859}
860
861static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
862                                         std::vector<std::string> &Res) {
863  if (!Opts.ShowCPP && !Opts.ShowMacros)
864    llvm::report_fatal_error("Invalid option combination!");
865
866  if (Opts.ShowCPP && Opts.ShowMacros)
867    Res.push_back("-dD");
868  else if (!Opts.ShowCPP && Opts.ShowMacros)
869    Res.push_back("-dM");
870
871  if (!Opts.ShowLineMarkers)
872    Res.push_back("-P");
873  if (Opts.ShowComments)
874    Res.push_back("-C");
875  if (Opts.ShowMacroComments)
876    Res.push_back("-CC");
877}
878
879static void TargetOptsToArgs(const TargetOptions &Opts,
880                             std::vector<std::string> &Res) {
881  Res.push_back("-triple");
882  Res.push_back(Opts.Triple);
883  if (!Opts.CPU.empty()) {
884    Res.push_back("-target-cpu");
885    Res.push_back(Opts.CPU);
886  }
887  if (!Opts.ABI.empty()) {
888    Res.push_back("-target-abi");
889    Res.push_back(Opts.ABI);
890  }
891  if (!Opts.LinkerVersion.empty()) {
892    Res.push_back("-target-linker-version");
893    Res.push_back(Opts.LinkerVersion);
894  }
895  if (!Opts.CXXABI.empty()) {
896    Res.push_back("-cxx-abi");
897    Res.push_back(Opts.CXXABI);
898  }
899  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
900    Res.push_back("-target-feature");
901    Res.push_back(Opts.Features[i]);
902  }
903}
904
905void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
906  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
907  CodeGenOptsToArgs(getCodeGenOpts(), Res);
908  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
909  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
910  FileSystemOptsToArgs(getFileSystemOpts(), Res);
911  FrontendOptsToArgs(getFrontendOpts(), Res);
912  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
913  LangOptsToArgs(*getLangOpts(), Res);
914  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
915  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
916  TargetOptsToArgs(getTargetOpts(), Res);
917}
918
919//===----------------------------------------------------------------------===//
920// Deserialization (to args)
921//===----------------------------------------------------------------------===//
922
923using namespace clang::driver;
924using namespace clang::driver::cc1options;
925
926//
927
928static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
929                                     DiagnosticsEngine &Diags) {
930  unsigned DefaultOpt = 0;
931  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
932    DefaultOpt = 2;
933  // -Os/-Oz implies -O2
934  return (Args.hasArg(OPT_Os) || Args.hasArg (OPT_Oz)) ? 2 :
935    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
936}
937
938static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
939                              DiagnosticsEngine &Diags) {
940  using namespace cc1options;
941
942  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
943    StringRef Name = A->getValue(Args);
944    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
945#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
946      .Case(CMDFLAG, NAME##Model)
947#include "clang/Frontend/Analyses.def"
948      .Default(NumStores);
949    // FIXME: Error handling.
950    if (Value == NumStores)
951      Diags.Report(diag::err_drv_invalid_value)
952        << A->getAsString(Args) << Name;
953    else
954      Opts.AnalysisStoreOpt = Value;
955  }
956
957  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
958    StringRef Name = A->getValue(Args);
959    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
960#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
961      .Case(CMDFLAG, NAME##Model)
962#include "clang/Frontend/Analyses.def"
963      .Default(NumConstraints);
964    // FIXME: Error handling.
965    if (Value == NumConstraints)
966      Diags.Report(diag::err_drv_invalid_value)
967        << A->getAsString(Args) << Name;
968    else
969      Opts.AnalysisConstraintsOpt = Value;
970  }
971
972  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
973    StringRef Name = A->getValue(Args);
974    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
975#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
976      .Case(CMDFLAG, PD_##NAME)
977#include "clang/Frontend/Analyses.def"
978      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
979    // FIXME: Error handling.
980    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
981      Diags.Report(diag::err_drv_invalid_value)
982        << A->getAsString(Args) << Name;
983    else
984      Opts.AnalysisDiagOpt = Value;
985  }
986
987  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
988    StringRef Name = A->getValue(Args);
989    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
990#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
991      .Case(CMDFLAG, NAME)
992#include "clang/Frontend/Analyses.def"
993      .Default(NumPurgeModes);
994    // FIXME: Error handling.
995    if (Value == NumPurgeModes)
996      Diags.Report(diag::err_drv_invalid_value)
997        << A->getAsString(Args) << Name;
998    else
999      Opts.AnalysisPurgeOpt = Value;
1000  }
1001
1002  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1003  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1004  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1005  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1006  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1007  Opts.AnalyzeNestedBlocks =
1008    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1009  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1010  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1011  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1012  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1013  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1014  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1015  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1016  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1017  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1018  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
1019
1020  Opts.CheckersControlList.clear();
1021  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1022                                             OPT_analyzer_disable_checker),
1023         ie = Args.filtered_end(); it != ie; ++it) {
1024    const Arg *A = *it;
1025    A->claim();
1026    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1027    // We can have a list of comma separated checker names, e.g:
1028    // '-analyzer-checker=cocoa,unix'
1029    StringRef checkerList = A->getValue(Args);
1030    SmallVector<StringRef, 4> checkers;
1031    checkerList.split(checkers, ",");
1032    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1033      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1034  }
1035}
1036
1037static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1038                             DiagnosticsEngine &Diags) {
1039  using namespace cc1options;
1040
1041  Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
1042  if (Opts.OptimizationLevel > 3) {
1043    Diags.Report(diag::err_drv_invalid_value)
1044      << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
1045    Opts.OptimizationLevel = 3;
1046  }
1047
1048  // We must always run at least the always inlining pass.
1049  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1050    : CodeGenOptions::OnlyAlwaysInlining;
1051
1052  Opts.DebugInfo = Args.hasArg(OPT_g);
1053  Opts.LimitDebugInfo = !Args.hasArg(OPT_fno_limit_debug_info)
1054    || Args.hasArg(OPT_flimit_debug_info);
1055  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1056  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1057  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1058  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1059    OPT_fuse_register_sized_bitfield_access);
1060  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1061  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1062  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1063  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1064  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1065  Opts.OptimizeSize = Args.hasArg(OPT_Os);
1066  Opts.OptimizeSize = Args.hasArg(OPT_Oz) ? 2 : Opts.OptimizeSize;
1067  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1068                            Args.hasArg(OPT_ffreestanding));
1069  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1070                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1071
1072  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1073  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1074  Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc);
1075  Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate);
1076  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1077  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1078  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1079  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1080  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1081  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1082  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1083  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1084  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1085  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1086  Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
1087                                          Args.hasArg(OPT_cl_fast_relaxed_math);
1088  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1089  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1090  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1091  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1092  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1093  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1094  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1095  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1096  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1097  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1098  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1099  Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1100                      Args.hasArg(OPT_cl_fast_relaxed_math);
1101  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1102  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1103
1104  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1105  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1106
1107  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1108  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1109
1110  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1111  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1112  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1113  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1114  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1115  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1116  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1117
1118  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1119    StringRef Name = A->getValue(Args);
1120    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1121      .Case("legacy", CodeGenOptions::Legacy)
1122      .Case("non-legacy", CodeGenOptions::NonLegacy)
1123      .Case("mixed", CodeGenOptions::Mixed)
1124      .Default(~0U);
1125    if (Method == ~0U)
1126      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1127    else
1128      Opts.ObjCDispatchMethod = Method;
1129  }
1130}
1131
1132static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1133                                      ArgList &Args) {
1134  using namespace cc1options;
1135  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1136  Opts.Targets = Args.getAllArgValues(OPT_MT);
1137  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1138  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1139  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1140  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1141  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1142}
1143
1144static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1145                                DiagnosticsEngine &Diags) {
1146  using namespace cc1options;
1147  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1148  Opts.DiagnosticSerializationFile =
1149    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1150  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1151  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1152  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1153  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1154  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1155  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1156  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1157                                 OPT_fno_show_column,
1158                                 /*Default=*/true);
1159  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1160  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1161  Opts.ShowNames = Args.hasArg(OPT_fdiagnostics_show_name);
1162  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1163
1164  // Default behavior is to not to show note include stacks.
1165  Opts.ShowNoteIncludeStack = false;
1166  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1167                               OPT_fno_diagnostics_show_note_include_stack))
1168    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1169      Opts.ShowNoteIncludeStack = true;
1170
1171  StringRef ShowOverloads =
1172    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1173  if (ShowOverloads == "best")
1174    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1175  else if (ShowOverloads == "all")
1176    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1177  else
1178    Diags.Report(diag::err_drv_invalid_value)
1179      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1180      << ShowOverloads;
1181
1182  StringRef ShowCategory =
1183    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1184  if (ShowCategory == "none")
1185    Opts.ShowCategories = 0;
1186  else if (ShowCategory == "id")
1187    Opts.ShowCategories = 1;
1188  else if (ShowCategory == "name")
1189    Opts.ShowCategories = 2;
1190  else
1191    Diags.Report(diag::err_drv_invalid_value)
1192      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1193      << ShowCategory;
1194
1195  StringRef Format =
1196    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1197  if (Format == "clang")
1198    Opts.Format = DiagnosticOptions::Clang;
1199  else if (Format == "msvc")
1200    Opts.Format = DiagnosticOptions::Msvc;
1201  else if (Format == "vi")
1202    Opts.Format = DiagnosticOptions::Vi;
1203  else
1204    Diags.Report(diag::err_drv_invalid_value)
1205      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1206      << Format;
1207
1208  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1209  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1210  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1211  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1212  Opts.MacroBacktraceLimit
1213    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1214                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1215  Opts.TemplateBacktraceLimit
1216    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1217                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1218                         Diags);
1219  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1220                                    DiagnosticOptions::DefaultTabStop, Diags);
1221  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1222    Diags.Report(diag::warn_ignoring_ftabstop_value)
1223      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1224    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1225  }
1226  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1227  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1228  Opts.Warnings = Args.getAllArgValues(OPT_W);
1229}
1230
1231static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1232  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1233}
1234
1235static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1236                                   DiagnosticsEngine &Diags) {
1237  using namespace cc1options;
1238  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1239  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1240    switch (A->getOption().getID()) {
1241    default:
1242      llvm_unreachable("Invalid option in group!");
1243    case OPT_ast_dump:
1244      Opts.ProgramAction = frontend::ASTDump; break;
1245    case OPT_ast_dump_xml:
1246      Opts.ProgramAction = frontend::ASTDumpXML; break;
1247    case OPT_ast_print:
1248      Opts.ProgramAction = frontend::ASTPrint; break;
1249    case OPT_ast_view:
1250      Opts.ProgramAction = frontend::ASTView; break;
1251    case OPT_dump_raw_tokens:
1252      Opts.ProgramAction = frontend::DumpRawTokens; break;
1253    case OPT_dump_tokens:
1254      Opts.ProgramAction = frontend::DumpTokens; break;
1255    case OPT_S:
1256      Opts.ProgramAction = frontend::EmitAssembly; break;
1257    case OPT_emit_llvm_bc:
1258      Opts.ProgramAction = frontend::EmitBC; break;
1259    case OPT_emit_html:
1260      Opts.ProgramAction = frontend::EmitHTML; break;
1261    case OPT_emit_llvm:
1262      Opts.ProgramAction = frontend::EmitLLVM; break;
1263    case OPT_emit_llvm_only:
1264      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1265    case OPT_emit_codegen_only:
1266      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1267    case OPT_emit_obj:
1268      Opts.ProgramAction = frontend::EmitObj; break;
1269    case OPT_fixit_EQ:
1270      Opts.FixItSuffix = A->getValue(Args);
1271      // fall-through!
1272    case OPT_fixit:
1273      Opts.ProgramAction = frontend::FixIt; break;
1274    case OPT_emit_module:
1275      Opts.ProgramAction = frontend::GenerateModule; break;
1276    case OPT_emit_pch:
1277      Opts.ProgramAction = frontend::GeneratePCH; break;
1278    case OPT_emit_pth:
1279      Opts.ProgramAction = frontend::GeneratePTH; break;
1280    case OPT_init_only:
1281      Opts.ProgramAction = frontend::InitOnly; break;
1282    case OPT_fsyntax_only:
1283      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1284    case OPT_print_decl_contexts:
1285      Opts.ProgramAction = frontend::PrintDeclContext; break;
1286    case OPT_print_preamble:
1287      Opts.ProgramAction = frontend::PrintPreamble; break;
1288    case OPT_E:
1289      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1290    case OPT_rewrite_macros:
1291      Opts.ProgramAction = frontend::RewriteMacros; break;
1292    case OPT_rewrite_objc:
1293      Opts.ProgramAction = frontend::RewriteObjC; break;
1294    case OPT_rewrite_test:
1295      Opts.ProgramAction = frontend::RewriteTest; break;
1296    case OPT_analyze:
1297      Opts.ProgramAction = frontend::RunAnalysis; break;
1298    case OPT_Eonly:
1299      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1300    }
1301  }
1302
1303  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1304    Opts.Plugins.push_back(A->getValue(Args,0));
1305    Opts.ProgramAction = frontend::PluginAction;
1306    Opts.ActionName = A->getValue(Args);
1307
1308    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1309           end = Args.filtered_end(); it != end; ++it) {
1310      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1311        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1312    }
1313  }
1314
1315  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1316  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1317  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1318    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1319           end = Args.filtered_end(); it != end; ++it) {
1320      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1321        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1322    }
1323  }
1324
1325  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1326    Opts.CodeCompletionAt =
1327      ParsedSourceLocation::FromString(A->getValue(Args));
1328    if (Opts.CodeCompletionAt.FileName.empty())
1329      Diags.Report(diag::err_drv_invalid_value)
1330        << A->getAsString(Args) << A->getValue(Args);
1331  }
1332  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1333
1334  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1335  Opts.Plugins = Args.getAllArgValues(OPT_load);
1336  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1337  Opts.ShowHelp = Args.hasArg(OPT_help);
1338  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1339  Opts.ShowCodePatternsInCodeCompletion
1340    = Args.hasArg(OPT_code_completion_patterns);
1341  Opts.ShowGlobalSymbolsInCodeCompletion
1342    = !Args.hasArg(OPT_no_code_completion_globals);
1343  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1344  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1345  Opts.ShowVersion = Args.hasArg(OPT_version);
1346  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1347  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1348  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1349
1350  Opts.ARCMTAction = FrontendOptions::ARCMT_None;
1351  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1352                                     OPT_arcmt_modify,
1353                                     OPT_arcmt_migrate)) {
1354    switch (A->getOption().getID()) {
1355    default:
1356      llvm_unreachable("missed a case");
1357    case OPT_arcmt_check:
1358      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1359      break;
1360    case OPT_arcmt_modify:
1361      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1362      break;
1363    case OPT_arcmt_migrate:
1364      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1365      break;
1366    }
1367  }
1368  Opts.ARCMTMigrateDir = Args.getLastArgValue(OPT_arcmt_migrate_directory);
1369  Opts.ARCMTMigrateReportOut
1370    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1371  Opts.ARCMTMigrateEmitARCErrors
1372    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1373
1374  InputKind DashX = IK_None;
1375  if (const Arg *A = Args.getLastArg(OPT_x)) {
1376    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1377      .Case("c", IK_C)
1378      .Case("cl", IK_OpenCL)
1379      .Case("cuda", IK_CUDA)
1380      .Case("c++", IK_CXX)
1381      .Case("objective-c", IK_ObjC)
1382      .Case("objective-c++", IK_ObjCXX)
1383      .Case("cpp-output", IK_PreprocessedC)
1384      .Case("assembler-with-cpp", IK_Asm)
1385      .Case("c++-cpp-output", IK_PreprocessedCXX)
1386      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1387      .Case("objc-cpp-output", IK_PreprocessedObjC)
1388      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1389      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1390      .Case("c-header", IK_C)
1391      .Case("cl-header", IK_OpenCL)
1392      .Case("objective-c-header", IK_ObjC)
1393      .Case("c++-header", IK_CXX)
1394      .Case("objective-c++-header", IK_ObjCXX)
1395      .Case("ast", IK_AST)
1396      .Case("ir", IK_LLVM_IR)
1397      .Default(IK_None);
1398    if (DashX == IK_None)
1399      Diags.Report(diag::err_drv_invalid_value)
1400        << A->getAsString(Args) << A->getValue(Args);
1401  }
1402
1403  // '-' is the default input if none is given.
1404  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1405  Opts.Inputs.clear();
1406  if (Inputs.empty())
1407    Inputs.push_back("-");
1408  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1409    InputKind IK = DashX;
1410    if (IK == IK_None) {
1411      IK = FrontendOptions::getInputKindForExtension(
1412        StringRef(Inputs[i]).rsplit('.').second);
1413      // FIXME: Remove this hack.
1414      if (i == 0)
1415        DashX = IK;
1416    }
1417    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1418  }
1419
1420  return DashX;
1421}
1422
1423std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1424                                                 void *MainAddr) {
1425  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1426
1427  if (!P.isEmpty()) {
1428    P.eraseComponent();  // Remove /clang from foo/bin/clang
1429    P.eraseComponent();  // Remove /bin   from foo/bin
1430
1431    // Get foo/lib/clang/<version>/include
1432    P.appendComponent("lib");
1433    P.appendComponent("clang");
1434    P.appendComponent(CLANG_VERSION_STRING);
1435  }
1436
1437  return P.str();
1438}
1439
1440static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1441  using namespace cc1options;
1442  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1443  Opts.Verbose = Args.hasArg(OPT_v);
1444  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1445  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1446  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1447  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1448    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1449  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1450  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1451  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1452
1453  // Add -I..., -F..., and -index-header-map options in order.
1454  bool IsIndexHeaderMap = false;
1455  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1456                                             OPT_index_header_map),
1457       ie = Args.filtered_end(); it != ie; ++it) {
1458    if ((*it)->getOption().matches(OPT_index_header_map)) {
1459      // -index-header-map applies to the next -I or -F.
1460      IsIndexHeaderMap = true;
1461      continue;
1462    }
1463
1464    frontend::IncludeDirGroup Group
1465      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1466
1467    Opts.AddPath((*it)->getValue(Args), Group, true,
1468                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1469    IsIndexHeaderMap = false;
1470  }
1471
1472  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1473  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1474  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1475                                             OPT_iwithprefixbefore),
1476         ie = Args.filtered_end(); it != ie; ++it) {
1477    const Arg *A = *it;
1478    if (A->getOption().matches(OPT_iprefix))
1479      Prefix = A->getValue(Args);
1480    else if (A->getOption().matches(OPT_iwithprefix))
1481      Opts.AddPath(Prefix.str() + A->getValue(Args),
1482                   frontend::System, false, false, false);
1483    else
1484      Opts.AddPath(Prefix.str() + A->getValue(Args),
1485                   frontend::Angled, false, false, false);
1486  }
1487
1488  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1489         ie = Args.filtered_end(); it != ie; ++it)
1490    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1491  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1492         ie = Args.filtered_end(); it != ie; ++it)
1493    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1494  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1495         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1496    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1497                 !(*it)->getOption().matches(OPT_iwithsysroot));
1498  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1499         ie = Args.filtered_end(); it != ie; ++it)
1500    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1501                 true);
1502
1503  // Add the paths for the various language specific isystem flags.
1504  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1505       ie = Args.filtered_end(); it != ie; ++it)
1506    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1507  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1508       ie = Args.filtered_end(); it != ie; ++it)
1509    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1510  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1511       ie = Args.filtered_end(); it != ie; ++it)
1512    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1513  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1514       ie = Args.filtered_end(); it != ie; ++it)
1515    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1516                 true);
1517
1518  // Add the internal paths from a driver that detects standard include paths.
1519  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1520                                            OPT_internal_externc_isystem),
1521                    E = Args.filtered_end();
1522       I != E; ++I)
1523    Opts.AddPath((*I)->getValue(Args), frontend::System,
1524                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1525                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1526}
1527
1528void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1529                                         LangStandard::Kind LangStd) {
1530  // Set some properties which depend solely on the input kind; it would be nice
1531  // to move these to the language standard, and have the driver resolve the
1532  // input kind + language standard.
1533  if (IK == IK_Asm) {
1534    Opts.AsmPreprocessor = 1;
1535  } else if (IK == IK_ObjC ||
1536             IK == IK_ObjCXX ||
1537             IK == IK_PreprocessedObjC ||
1538             IK == IK_PreprocessedObjCXX) {
1539    Opts.ObjC1 = Opts.ObjC2 = 1;
1540  }
1541
1542  if (LangStd == LangStandard::lang_unspecified) {
1543    // Based on the base language, pick one.
1544    switch (IK) {
1545    case IK_None:
1546    case IK_AST:
1547    case IK_LLVM_IR:
1548      llvm_unreachable("Invalid input kind!");
1549    case IK_OpenCL:
1550      LangStd = LangStandard::lang_opencl;
1551      break;
1552    case IK_CUDA:
1553      LangStd = LangStandard::lang_cuda;
1554      break;
1555    case IK_Asm:
1556    case IK_C:
1557    case IK_PreprocessedC:
1558    case IK_ObjC:
1559    case IK_PreprocessedObjC:
1560      LangStd = LangStandard::lang_gnu99;
1561      break;
1562    case IK_CXX:
1563    case IK_PreprocessedCXX:
1564    case IK_ObjCXX:
1565    case IK_PreprocessedObjCXX:
1566      LangStd = LangStandard::lang_gnucxx98;
1567      break;
1568    }
1569  }
1570
1571  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1572  Opts.BCPLComment = Std.hasBCPLComments();
1573  Opts.C99 = Std.isC99();
1574  Opts.C1X = Std.isC1X();
1575  Opts.CPlusPlus = Std.isCPlusPlus();
1576  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1577  Opts.Digraphs = Std.hasDigraphs();
1578  Opts.GNUMode = Std.isGNUMode();
1579  Opts.GNUInline = !Std.isC99();
1580  Opts.HexFloats = Std.hasHexFloats();
1581  Opts.ImplicitInt = Std.hasImplicitInt();
1582
1583  // OpenCL has some additional defaults.
1584  if (LangStd == LangStandard::lang_opencl) {
1585    Opts.OpenCL = 1;
1586    Opts.AltiVec = 0;
1587    Opts.CXXOperatorNames = 1;
1588    Opts.LaxVectorConversions = 0;
1589    Opts.DefaultFPContract = 1;
1590  }
1591
1592  if (LangStd == LangStandard::lang_cuda)
1593    Opts.CUDA = 1;
1594
1595  // OpenCL and C++ both have bool, true, false keywords.
1596  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1597
1598  Opts.GNUKeywords = Opts.GNUMode;
1599  Opts.CXXOperatorNames = Opts.CPlusPlus;
1600
1601  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1602  // is specified, or -std is set to a conforming mode.
1603  Opts.Trigraphs = !Opts.GNUMode;
1604
1605  Opts.DollarIdents = !Opts.AsmPreprocessor;
1606}
1607
1608static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1609                          DiagnosticsEngine &Diags) {
1610  // FIXME: Cleanup per-file based stuff.
1611  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1612  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1613    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1614#define LANGSTANDARD(id, name, desc, features) \
1615      .Case(name, LangStandard::lang_##id)
1616#include "clang/Frontend/LangStandards.def"
1617      .Default(LangStandard::lang_unspecified);
1618    if (LangStd == LangStandard::lang_unspecified)
1619      Diags.Report(diag::err_drv_invalid_value)
1620        << A->getAsString(Args) << A->getValue(Args);
1621    else {
1622      // Valid standard, check to make sure language and standard are compatable.
1623      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1624      switch (IK) {
1625      case IK_C:
1626      case IK_ObjC:
1627      case IK_PreprocessedC:
1628      case IK_PreprocessedObjC:
1629        if (!(Std.isC89() || Std.isC99()))
1630          Diags.Report(diag::err_drv_argument_not_allowed_with)
1631            << A->getAsString(Args) << "C/ObjC";
1632        break;
1633      case IK_CXX:
1634      case IK_ObjCXX:
1635      case IK_PreprocessedCXX:
1636      case IK_PreprocessedObjCXX:
1637        if (!Std.isCPlusPlus())
1638          Diags.Report(diag::err_drv_argument_not_allowed_with)
1639            << A->getAsString(Args) << "C++/ObjC++";
1640        break;
1641      case IK_OpenCL:
1642        if (!Std.isC99())
1643          Diags.Report(diag::err_drv_argument_not_allowed_with)
1644            << A->getAsString(Args) << "OpenCL";
1645        break;
1646      case IK_CUDA:
1647        if (!Std.isCPlusPlus())
1648          Diags.Report(diag::err_drv_argument_not_allowed_with)
1649            << A->getAsString(Args) << "CUDA";
1650        break;
1651      default:
1652        break;
1653      }
1654    }
1655  }
1656
1657  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1658    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1659      Diags.Report(diag::err_drv_invalid_value)
1660        << A->getAsString(Args) << A->getValue(Args);
1661    }
1662  }
1663
1664  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1665
1666  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1667  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1668  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1669  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1670  // name, as it doesn't seem a useful distinction.
1671  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1672                                  Opts.GNUKeywords);
1673
1674  if (Args.hasArg(OPT_fno_operator_names))
1675    Opts.CXXOperatorNames = 0;
1676
1677  if (Opts.ObjC1) {
1678    if (Args.hasArg(OPT_fobjc_gc_only))
1679      Opts.setGC(LangOptions::GCOnly);
1680    else if (Args.hasArg(OPT_fobjc_gc))
1681      Opts.setGC(LangOptions::HybridGC);
1682    else if (Args.hasArg(OPT_fobjc_arc)) {
1683      Opts.ObjCAutoRefCount = 1;
1684      if (Args.hasArg(OPT_fobjc_fragile_abi))
1685        Diags.Report(diag::err_arc_nonfragile_abi);
1686    }
1687
1688    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1689      Opts.ObjCRuntimeHasWeak = 1;
1690
1691    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1692      Opts.ObjCInferRelatedResultType = 0;
1693  }
1694
1695  if (Args.hasArg(OPT_fgnu89_inline))
1696    Opts.GNUInline = 1;
1697
1698  if (Args.hasArg(OPT_fapple_kext)) {
1699    if (!Opts.CPlusPlus)
1700      Diags.Report(diag::warn_c_kext);
1701    else
1702      Opts.AppleKext = 1;
1703  }
1704
1705  if (Args.hasArg(OPT_print_ivar_layout))
1706    Opts.ObjCGCBitmapPrint = 1;
1707  if (Args.hasArg(OPT_fno_constant_cfstrings))
1708    Opts.NoConstantCFStrings = 1;
1709
1710  if (Args.hasArg(OPT_faltivec))
1711    Opts.AltiVec = 1;
1712
1713  if (Args.hasArg(OPT_pthread))
1714    Opts.POSIXThreads = 1;
1715
1716  if (Args.hasArg(OPT_fdelayed_template_parsing))
1717    Opts.DelayedTemplateParsing = 1;
1718
1719  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1720  if (Vis == "default")
1721    Opts.setVisibilityMode(DefaultVisibility);
1722  else if (Vis == "hidden")
1723    Opts.setVisibilityMode(HiddenVisibility);
1724  else if (Vis == "protected")
1725    Opts.setVisibilityMode(ProtectedVisibility);
1726  else
1727    Diags.Report(diag::err_drv_invalid_value)
1728      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1729
1730  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1731    Opts.InlineVisibilityHidden = 1;
1732
1733  if (Args.hasArg(OPT_ftrapv)) {
1734    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1735    // Set the handler, if one is specified.
1736    Opts.OverflowHandler =
1737        Args.getLastArgValue(OPT_ftrapv_handler);
1738  }
1739  else if (Args.hasArg(OPT_fwrapv))
1740    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1741
1742  if (Args.hasArg(OPT_trigraphs))
1743    Opts.Trigraphs = 1;
1744
1745  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1746                                   OPT_fno_dollars_in_identifiers,
1747                                   Opts.DollarIdents);
1748  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1749  Opts.MicrosoftExt
1750    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1751  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1752  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1753  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1754  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1755  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1756                                   Opts.ConstStrings);
1757  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1758    Opts.LaxVectorConversions = 0;
1759  if (Args.hasArg(OPT_fno_threadsafe_statics))
1760    Opts.ThreadsafeStatics = 0;
1761  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1762  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1763  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1764  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1765  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1766
1767  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1768  Opts.Blocks = Args.hasArg(OPT_fblocks);
1769  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1770  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1771  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1772  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1773  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1774  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1775  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1776  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1777  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1778  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1779  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1780  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1781                                                    Diags);
1782  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1783                                                    Diags);
1784  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1785  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1786                                                    0, Diags);
1787  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1788  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1789  Opts.ObjCConstantStringClass =
1790    Args.getLastArgValue(OPT_fconstant_string_class);
1791  Opts.ObjCNonFragileABI = !Args.hasArg(OPT_fobjc_fragile_abi);
1792  if (Opts.ObjCNonFragileABI)
1793    Opts.ObjCNonFragileABI2 = true;
1794  Opts.ObjCDefaultSynthProperties =
1795    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1796  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1797  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1798  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct, 0, Diags);
1799  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1800  Opts.Static = Args.hasArg(OPT_static_define);
1801  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1802  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1803  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1804  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1805  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1806  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1807  Opts.MRTD = Args.hasArg(OPT_mrtd);
1808  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1809  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1810  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1811  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
1812  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1813  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1814
1815  // Record whether the __DEPRECATED define was requested.
1816  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1817                                 OPT_fno_deprecated_macro,
1818                                 Opts.Deprecated);
1819
1820  // FIXME: Eliminate this dependency.
1821  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1822  Opts.Optimize = Opt != 0;
1823  Opts.OptimizeSize = Args.hasArg(OPT_Os) || Args.hasArg(OPT_Oz);
1824
1825  // This is the __NO_INLINE__ define, which just depends on things like the
1826  // optimization level and -fno-inline, not actually whether the backend has
1827  // inlining enabled.
1828  //
1829  // FIXME: This is affected by other options (-fno-inline).
1830  Opts.NoInline = !Opt;
1831
1832  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1833  switch (SSP) {
1834  default:
1835    Diags.Report(diag::err_drv_invalid_value)
1836      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1837    break;
1838  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1839  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
1840  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
1841  }
1842}
1843
1844static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1845                                  FileManager &FileMgr,
1846                                  DiagnosticsEngine &Diags) {
1847  using namespace cc1options;
1848  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1849  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1850  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1851      Opts.TokenCache = A->getValue(Args);
1852  else
1853    Opts.TokenCache = Opts.ImplicitPTHInclude;
1854  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1855  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1856  Opts.AutoModuleImport = Args.hasArg(OPT_fauto_module_import);
1857  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1858
1859  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1860  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1861         ie = Args.filtered_end(); it != ie; ++it) {
1862    const Arg *A = *it;
1863    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1864  }
1865
1866  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1867    StringRef Value(A->getValue(Args));
1868    size_t Comma = Value.find(',');
1869    unsigned Bytes = 0;
1870    unsigned EndOfLine = 0;
1871
1872    if (Comma == StringRef::npos ||
1873        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1874        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1875      Diags.Report(diag::err_drv_preamble_format);
1876    else {
1877      Opts.PrecompiledPreambleBytes.first = Bytes;
1878      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1879    }
1880  }
1881
1882  // Add macros from the command line.
1883  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1884         ie = Args.filtered_end(); it != ie; ++it) {
1885    if ((*it)->getOption().matches(OPT_D))
1886      Opts.addMacroDef((*it)->getValue(Args));
1887    else
1888      Opts.addMacroUndef((*it)->getValue(Args));
1889  }
1890
1891  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1892
1893  // Add the ordered list of -includes.
1894  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1895                                             OPT_include_pth),
1896         ie = Args.filtered_end(); it != ie; ++it) {
1897    const Arg *A = *it;
1898    // PCH is handled specially, we need to extra the original include path.
1899    if (A->getOption().matches(OPT_include_pch)) {
1900      std::string OriginalFile =
1901        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1902      if (OriginalFile.empty())
1903        continue;
1904
1905      Opts.Includes.push_back(OriginalFile);
1906    } else
1907      Opts.Includes.push_back(A->getValue(Args));
1908  }
1909
1910  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1911         ie = Args.filtered_end(); it != ie; ++it) {
1912    const Arg *A = *it;
1913    Opts.ChainedIncludes.push_back(A->getValue(Args));
1914  }
1915
1916  // Include 'altivec.h' if -faltivec option present
1917  if (Args.hasArg(OPT_faltivec))
1918    Opts.Includes.push_back("altivec.h");
1919
1920  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1921         ie = Args.filtered_end(); it != ie; ++it) {
1922    const Arg *A = *it;
1923    std::pair<StringRef,StringRef> Split =
1924      StringRef(A->getValue(Args)).split(';');
1925
1926    if (Split.second.empty()) {
1927      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1928      continue;
1929    }
1930
1931    Opts.addRemappedFile(Split.first, Split.second);
1932  }
1933
1934  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1935    StringRef Name = A->getValue(Args);
1936    unsigned Library = llvm::StringSwitch<unsigned>(Name)
1937      .Case("libc++", ARCXX_libcxx)
1938      .Case("libstdc++", ARCXX_libstdcxx)
1939      .Case("none", ARCXX_nolib)
1940      .Default(~0U);
1941    if (Library == ~0U)
1942      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1943    else
1944      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1945  }
1946}
1947
1948static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1949                                        ArgList &Args) {
1950  using namespace cc1options;
1951  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1952  Opts.ShowComments = Args.hasArg(OPT_C);
1953  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1954  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1955  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1956}
1957
1958static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1959  using namespace cc1options;
1960  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1961  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1962  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1963  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1964  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1965  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1966
1967  // Use the default target triple if unspecified.
1968  if (Opts.Triple.empty())
1969    Opts.Triple = llvm::sys::getDefaultTargetTriple();
1970}
1971
1972//
1973
1974void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1975                                        const char *const *ArgBegin,
1976                                        const char *const *ArgEnd,
1977                                        DiagnosticsEngine &Diags) {
1978  // Parse the arguments.
1979  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1980  unsigned MissingArgIndex, MissingArgCount;
1981  llvm::OwningPtr<InputArgList> Args(
1982    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1983
1984  // Check for missing argument error.
1985  if (MissingArgCount)
1986    Diags.Report(diag::err_drv_missing_argument)
1987      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1988
1989  // Issue errors on unknown arguments.
1990  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1991         ie = Args->filtered_end(); it != ie; ++it)
1992    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1993
1994  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1995  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1996  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1997  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1998  // FIXME: We shouldn't have to pass the DashX option around here
1999  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2000  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
2001  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2002  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2003    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2004    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2005      Res.getLangOpts()->ObjCExceptions = 1;
2006  }
2007  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2008  // PCH file and find the original header name. Remove the need to do that in
2009  // ParsePreprocessorArgs and remove the FileManager
2010  // parameters from the function and the "FileManager.h" #include.
2011  FileManager FileMgr(Res.getFileSystemOpts());
2012  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2013  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2014  ParseTargetArgs(Res.getTargetOpts(), *Args);
2015}
2016
2017namespace {
2018
2019  class ModuleSignature {
2020    llvm::SmallVector<uint64_t, 16> Data;
2021    unsigned CurBit;
2022    uint64_t CurValue;
2023
2024  public:
2025    ModuleSignature() : CurBit(0), CurValue(0) { }
2026
2027    void add(uint64_t Value, unsigned Bits);
2028    void add(StringRef Value);
2029    void flush();
2030
2031    llvm::APInt getAsInteger() const;
2032  };
2033}
2034
2035void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2036  CurValue |= Value << CurBit;
2037  if (CurBit + NumBits < 64) {
2038    CurBit += NumBits;
2039    return;
2040  }
2041
2042  // Add the current word.
2043  Data.push_back(CurValue);
2044
2045  if (CurBit)
2046    CurValue = Value >> (64-CurBit);
2047  else
2048    CurValue = 0;
2049  CurBit = (CurBit+NumBits) & 63;
2050}
2051
2052void ModuleSignature::flush() {
2053  if (CurBit == 0)
2054    return;
2055
2056  Data.push_back(CurValue);
2057  CurBit = 0;
2058  CurValue = 0;
2059}
2060
2061void ModuleSignature::add(StringRef Value) {
2062  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2063    add(*I, 8);
2064}
2065
2066llvm::APInt ModuleSignature::getAsInteger() const {
2067  return llvm::APInt(Data.size() * 64, Data);
2068}
2069
2070std::string CompilerInvocation::getModuleHash() const {
2071  ModuleSignature Signature;
2072
2073  // Start the signature with the compiler version.
2074  Signature.add(getClangFullRepositoryVersion());
2075
2076  // Extend the signature with the language options
2077#define LANGOPT(Name, Bits, Default, Description) \
2078  Signature.add(LangOpts->Name, Bits);
2079#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2080  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2081#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2082#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2083#include "clang/Basic/LangOptions.def"
2084
2085  // Extend the signature with the target triple
2086  llvm::Triple T(TargetOpts.Triple);
2087  Signature.add((unsigned)T.getArch(), 5);
2088  Signature.add((unsigned)T.getVendor(), 4);
2089  Signature.add((unsigned)T.getOS(), 5);
2090  Signature.add((unsigned)T.getEnvironment(), 4);
2091
2092  // Extend the signature with preprocessor options.
2093  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2094  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2095
2096  // Hash the preprocessor defines.
2097  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2098  std::vector<StringRef> MacroDefs;
2099  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2100            I = getPreprocessorOpts().Macros.begin(),
2101         IEnd = getPreprocessorOpts().Macros.end();
2102       I != IEnd; ++I) {
2103    if (!I->second)
2104      MacroDefs.push_back(I->first);
2105  }
2106  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2107
2108  unsigned PPHashResult = 0;
2109  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2110    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2111  Signature.add(PPHashResult, 32);
2112
2113  // We've generated the signature. Treat it as one large APInt that we'll
2114  // encode in base-36 and return.
2115  Signature.flush();
2116  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2117}
2118