CompilerInvocation.cpp revision 8f4783c6a5ae1e95aeb58b41da9707310e60ab5b 
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/Options.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  : 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 purge mode!");
82#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
83  case NAME: return CMDFLAG;
84#include "clang/Frontend/Analyses.def"
85  }
86}
87
88static const char *getAnalysisIPAModeName(AnalysisIPAMode Kind) {
89  switch (Kind) {
90  default:
91    llvm_unreachable("Unknown analysis ipa mode!");
92#define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \
93  case NAME: return CMDFLAG;
94#include "clang/Frontend/Analyses.def"
95  }
96}
97
98static const char *
99  getAnalysisInliningModeName(AnalysisInliningMode Kind) {
100  switch (Kind) {
101  default:
102    llvm_unreachable("Unknown analysis inlining mode!");
103#define ANALYSIS_INLINE_SELECTION(NAME, CMDFLAG, DESC) \
104  case NAME: return CMDFLAG;
105#include "clang/Frontend/Analyses.def"
106  }
107}
108
109//===----------------------------------------------------------------------===//
110// Serialization (to args)
111//===----------------------------------------------------------------------===//
112
113namespace {
114  /// ToArgsList - Helper class to create a list of std::strings.
115  class ToArgsList {
116    std::vector<std::string> &Res;
117  public:
118    explicit ToArgsList(std::vector<std::string> &Res) : Res(Res) {}
119
120    void push_back(StringRef Str) {
121      // Avoid creating a temporary string.
122      Res.push_back(std::string());
123      Res.back().assign(Str.data(), Str.size());
124    }
125
126    void push_back(StringRef Str1, StringRef Str2) {
127      push_back(Str1);
128      push_back(Str2);
129    }
130  };
131}
132
133static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts, ToArgsList &Res) {
134  if (Opts.ShowCheckerHelp)
135    Res.push_back("-analyzer-checker-help");
136  if (Opts.AnalysisStoreOpt != RegionStoreModel)
137    Res.push_back("-analyzer-store",
138                  getAnalysisStoreName(Opts.AnalysisStoreOpt));
139  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel)
140    Res.push_back("-analyzer-constraints",
141                  getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
142  if (Opts.AnalysisDiagOpt != PD_HTML)
143    Res.push_back("-analyzer-output",
144                  getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
145  if (Opts.AnalysisPurgeOpt != PurgeStmt)
146    Res.push_back("-analyzer-purge",
147                  getAnalysisPurgeModeName(Opts.AnalysisPurgeOpt));
148  if (!Opts.AnalyzeSpecificFunction.empty())
149    Res.push_back("-analyze-function", Opts.AnalyzeSpecificFunction);
150  if (Opts.IPAMode != Inlining)
151    Res.push_back("-analyzer-ipa", getAnalysisIPAModeName(Opts.IPAMode));
152  if (Opts.InliningMode != NoRedundancy)
153    Res.push_back("-analyzer-inlining-mode",
154                  getAnalysisInliningModeName(Opts.InliningMode));
155
156  if (Opts.AnalyzeAll)
157    Res.push_back("-analyzer-opt-analyze-headers");
158  if (Opts.AnalyzerDisplayProgress)
159    Res.push_back("-analyzer-display-progress");
160  if (Opts.AnalyzeNestedBlocks)
161    Res.push_back("-analyzer-opt-analyze-nested-blocks");
162  if (Opts.EagerlyAssume)
163    Res.push_back("-analyzer-eagerly-assume");
164  if (Opts.TrimGraph)
165    Res.push_back("-trim-egraph");
166  if (Opts.VisualizeEGDot)
167    Res.push_back("-analyzer-viz-egraph-graphviz");
168  if (Opts.VisualizeEGUbi)
169    Res.push_back("-analyzer-viz-egraph-ubigraph");
170  if (Opts.NoRetryExhausted)
171    Res.push_back("-analyzer-disable-retry-exhausted");
172
173  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
174    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
175    if (opt.second)
176      Res.push_back("-analyzer-disable-checker");
177    else
178      Res.push_back("-analyzer-checker");
179    Res.push_back(opt.first);
180  }
181}
182
183static void CodeGenOptsToArgs(const CodeGenOptions &Opts, ToArgsList &Res) {
184  switch (Opts.DebugInfo) {
185    case CodeGenOptions::NoDebugInfo:
186      break;
187    case CodeGenOptions::DebugLineTablesOnly:
188      Res.push_back("-gline-tables-only");
189      break;
190    case CodeGenOptions::LimitedDebugInfo:
191      Res.push_back("-g");
192      Res.push_back("-flimit-debug-info");
193      break;
194    case CodeGenOptions::FullDebugInfo:
195      Res.push_back("-g");
196      Res.push_back("-fno-limit-debug-info");
197      break;
198  }
199  if (Opts.DisableLLVMOpts)
200    Res.push_back("-disable-llvm-optzns");
201  if (Opts.DisableRedZone)
202    Res.push_back("-disable-red-zone");
203  if (Opts.DisableTailCalls)
204    Res.push_back("-mdisable-tail-calls");
205  if (!Opts.DebugCompilationDir.empty())
206    Res.push_back("-fdebug-compilation-dir", Opts.DebugCompilationDir);
207  if (!Opts.DwarfDebugFlags.empty())
208    Res.push_back("-dwarf-debug-flags", Opts.DwarfDebugFlags);
209  if (Opts.EmitGcovArcs)
210    Res.push_back("-femit-coverage-data");
211  if (Opts.EmitGcovNotes)
212    Res.push_back("-femit-coverage-notes");
213  if (!Opts.MergeAllConstants)
214    Res.push_back("-fno-merge-all-constants");
215  if (Opts.NoCommon)
216    Res.push_back("-fno-common");
217  if (Opts.ForbidGuardVariables)
218    Res.push_back("-fforbid-guard-variables");
219  if (Opts.UseRegisterSizedBitfieldAccess)
220    Res.push_back("-fuse-register-sized-bitfield-access");
221  if (Opts.NoImplicitFloat)
222    Res.push_back("-no-implicit-float");
223  if (Opts.OmitLeafFramePointer)
224    Res.push_back("-momit-leaf-frame-pointer");
225  if (Opts.OptimizeSize) {
226    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
227    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
228  } else if (Opts.OptimizationLevel != 0)
229    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
230  if (!Opts.MainFileName.empty())
231    Res.push_back("-main-file-name", Opts.MainFileName);
232  if (Opts.NoInfsFPMath)
233    Res.push_back("-menable-no-infinities");
234  if (Opts.NoNaNsFPMath)
235    Res.push_back("-menable-no-nans");
236  // SimplifyLibCalls is only derived.
237  // TimePasses is only derived.
238  // UnitAtATime is unused.
239  // Inlining is only derived.
240
241  // UnrollLoops is derived, but also accepts an option, no
242  // harm in pushing it back here.
243  if (Opts.UnrollLoops)
244    Res.push_back("-funroll-loops");
245  if (Opts.DataSections)
246    Res.push_back("-fdata-sections");
247  if (Opts.FunctionSections)
248    Res.push_back("-ffunction-sections");
249  if (Opts.AsmVerbose)
250    Res.push_back("-masm-verbose");
251  if (!Opts.CodeModel.empty())
252    Res.push_back("-mcode-model", Opts.CodeModel);
253  if (Opts.CUDAIsDevice)
254    Res.push_back("-fcuda-is-device");
255  if (!Opts.CXAAtExit)
256    Res.push_back("-fno-use-cxa-atexit");
257  if (Opts.CXXCtorDtorAliases)
258    Res.push_back("-mconstructor-aliases");
259  if (Opts.ObjCAutoRefCountExceptions)
260    Res.push_back("-fobjc-arc-eh");
261  if (!Opts.DebugPass.empty()) {
262    Res.push_back("-mdebug-pass", Opts.DebugPass);
263  }
264  if (Opts.DisableFPElim)
265    Res.push_back("-mdisable-fp-elim");
266  if (!Opts.FloatABI.empty())
267    Res.push_back("-mfloat-abi", Opts.FloatABI);
268  if (!Opts.LimitFloatPrecision.empty())
269    Res.push_back("-mlimit-float-precision", Opts.LimitFloatPrecision);
270  if (Opts.NoZeroInitializedInBSS)
271    Res.push_back("-mno-zero-initialized-bss");
272  switch (Opts.getObjCDispatchMethod()) {
273  case CodeGenOptions::Legacy:
274    break;
275  case CodeGenOptions::Mixed:
276    Res.push_back("-fobjc-dispatch-method=mixed");
277    break;
278  case CodeGenOptions::NonLegacy:
279    Res.push_back("-fobjc-dispatch-method=non-legacy");
280    break;
281  }
282  if (Opts.BoundsChecking > 0)
283    Res.push_back("-fbounds-checking=" + llvm::utostr(Opts.BoundsChecking));
284  if (Opts.NumRegisterParameters)
285    Res.push_back("-mregparm", llvm::utostr(Opts.NumRegisterParameters));
286  if (Opts.NoGlobalMerge)
287    Res.push_back("-mno-global-merge");
288  if (Opts.NoExecStack)
289    Res.push_back("-mnoexecstack");
290  if (Opts.RelaxAll)
291    Res.push_back("-mrelax-all");
292  if (Opts.SaveTempLabels)
293    Res.push_back("-msave-temp-labels");
294  if (Opts.NoDwarf2CFIAsm)
295    Res.push_back("-fno-dwarf2-cfi-asm");
296  if (Opts.NoDwarfDirectoryAsm)
297    Res.push_back("-fno-dwarf-directory-asm");
298  if (Opts.SoftFloat)
299    Res.push_back("-msoft-float");
300  if (Opts.StrictEnums)
301    Res.push_back("-fstrict-enums");
302  if (Opts.UnwindTables)
303    Res.push_back("-munwind-tables");
304  if (Opts.RelocationModel != "pic")
305    Res.push_back("-mrelocation-model", Opts.RelocationModel);
306  if (!Opts.VerifyModule)
307    Res.push_back("-disable-llvm-verifier");
308  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i)
309    Res.push_back("-backend-option", Opts.BackendOptions[i]);
310
311  switch (Opts.DefaultTLSModel) {
312  case CodeGenOptions::GeneralDynamicTLSModel:
313    break;
314  case CodeGenOptions::LocalDynamicTLSModel:
315    Res.push_back("-ftls-model=local-dynamic");
316    break;
317  case CodeGenOptions::InitialExecTLSModel:
318    Res.push_back("-ftls-model=initial-exec");
319    break;
320  case CodeGenOptions::LocalExecTLSModel:
321    Res.push_back("-ftls-model=local-exec");
322    break;
323  }
324}
325
326static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
327                                       ToArgsList &Res) {
328  if (Opts.IncludeSystemHeaders)
329    Res.push_back("-sys-header-deps");
330  if (Opts.ShowHeaderIncludes)
331    Res.push_back("-H");
332  if (!Opts.HeaderIncludeOutputFile.empty())
333    Res.push_back("-header-include-file", Opts.HeaderIncludeOutputFile);
334  if (Opts.UsePhonyTargets)
335    Res.push_back("-MP");
336  if (!Opts.OutputFile.empty())
337    Res.push_back("-dependency-file", Opts.OutputFile);
338  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i)
339    Res.push_back("-MT", Opts.Targets[i]);
340}
341
342static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
343                                 ToArgsList &Res) {
344  if (Opts.IgnoreWarnings)
345    Res.push_back("-w");
346  if (Opts.NoRewriteMacros)
347    Res.push_back("-Wno-rewrite-macros");
348  if (Opts.Pedantic)
349    Res.push_back("-pedantic");
350  if (Opts.PedanticErrors)
351    Res.push_back("-pedantic-errors");
352  if (!Opts.ShowColumn)
353    Res.push_back("-fno-show-column");
354  if (!Opts.ShowLocation)
355    Res.push_back("-fno-show-source-location");
356  if (!Opts.ShowCarets)
357    Res.push_back("-fno-caret-diagnostics");
358  if (!Opts.ShowFixits)
359    Res.push_back("-fno-diagnostics-fixit-info");
360  if (Opts.ShowSourceRanges)
361    Res.push_back("-fdiagnostics-print-source-range-info");
362  if (Opts.ShowParseableFixits)
363    Res.push_back("-fdiagnostics-parseable-fixits");
364  if (Opts.ShowColors)
365    Res.push_back("-fcolor-diagnostics");
366  if (Opts.VerifyDiagnostics)
367    Res.push_back("-verify");
368  if (Opts.ShowOptionNames)
369    Res.push_back("-fdiagnostics-show-option");
370  if (Opts.ShowCategories == 1)
371    Res.push_back("-fdiagnostics-show-category=id");
372  else if (Opts.ShowCategories == 2)
373    Res.push_back("-fdiagnostics-show-category=name");
374  switch (Opts.Format) {
375  case DiagnosticOptions::Clang:
376    Res.push_back("-fdiagnostics-format=clang"); break;
377  case DiagnosticOptions::Msvc:
378    Res.push_back("-fdiagnostics-format=msvc");  break;
379  case DiagnosticOptions::Vi:
380    Res.push_back("-fdiagnostics-format=vi");    break;
381  }
382  if (Opts.ErrorLimit)
383    Res.push_back("-ferror-limit", llvm::utostr(Opts.ErrorLimit));
384  if (!Opts.DiagnosticLogFile.empty())
385    Res.push_back("-diagnostic-log-file", Opts.DiagnosticLogFile);
386  if (Opts.MacroBacktraceLimit
387                        != DiagnosticOptions::DefaultMacroBacktraceLimit)
388    Res.push_back("-fmacro-backtrace-limit",
389                  llvm::utostr(Opts.MacroBacktraceLimit));
390  if (Opts.TemplateBacktraceLimit
391                        != DiagnosticOptions::DefaultTemplateBacktraceLimit)
392    Res.push_back("-ftemplate-backtrace-limit",
393                  llvm::utostr(Opts.TemplateBacktraceLimit));
394  if (Opts.ConstexprBacktraceLimit
395                        != DiagnosticOptions::DefaultConstexprBacktraceLimit)
396    Res.push_back("-fconstexpr-backtrace-limit",
397                  llvm::utostr(Opts.ConstexprBacktraceLimit));
398
399  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop)
400    Res.push_back("-ftabstop", llvm::utostr(Opts.TabStop));
401  if (Opts.MessageLength)
402    Res.push_back("-fmessage-length", llvm::utostr(Opts.MessageLength));
403  if (!Opts.DumpBuildInformation.empty())
404    Res.push_back("-dump-build-information", Opts.DumpBuildInformation);
405  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
406    Res.push_back("-W" + Opts.Warnings[i]);
407}
408
409static const char *getInputKindName(InputKind Kind) {
410  switch (Kind) {
411  case IK_None:              break;
412  case IK_AST:               return "ast";
413  case IK_Asm:               return "assembler-with-cpp";
414  case IK_C:                 return "c";
415  case IK_CXX:               return "c++";
416  case IK_LLVM_IR:           return "ir";
417  case IK_ObjC:              return "objective-c";
418  case IK_ObjCXX:            return "objective-c++";
419  case IK_OpenCL:            return "cl";
420  case IK_CUDA:              return "cuda";
421  case IK_PreprocessedC:     return "cpp-output";
422  case IK_PreprocessedCXX:   return "c++-cpp-output";
423  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
424  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
425  }
426
427  llvm_unreachable("Unexpected language kind!");
428}
429
430static const char *getActionName(frontend::ActionKind Kind) {
431  switch (Kind) {
432  case frontend::PluginAction:
433    llvm_unreachable("Invalid kind!");
434
435  case frontend::ASTDump:                return "-ast-dump";
436  case frontend::ASTDumpXML:             return "-ast-dump-xml";
437  case frontend::ASTPrint:               return "-ast-print";
438  case frontend::ASTView:                return "-ast-view";
439  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
440  case frontend::DumpTokens:             return "-dump-tokens";
441  case frontend::EmitAssembly:           return "-S";
442  case frontend::EmitBC:                 return "-emit-llvm-bc";
443  case frontend::EmitHTML:               return "-emit-html";
444  case frontend::EmitLLVM:               return "-emit-llvm";
445  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
446  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
447  case frontend::EmitObj:                return "-emit-obj";
448  case frontend::FixIt:                  return "-fixit";
449  case frontend::GenerateModule:         return "-emit-module";
450  case frontend::GeneratePCH:            return "-emit-pch";
451  case frontend::GeneratePTH:            return "-emit-pth";
452  case frontend::InitOnly:               return "-init-only";
453  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
454  case frontend::PrintDeclContext:       return "-print-decl-contexts";
455  case frontend::PrintPreamble:          return "-print-preamble";
456  case frontend::PrintPreprocessedInput: return "-E";
457  case frontend::RewriteMacros:          return "-rewrite-macros";
458  case frontend::RewriteObjC:            return "-rewrite-objc";
459  case frontend::RewriteTest:            return "-rewrite-test";
460  case frontend::RunAnalysis:            return "-analyze";
461  case frontend::MigrateSource:          return "-migrate";
462  case frontend::RunPreprocessorOnly:    return "-Eonly";
463  }
464
465  llvm_unreachable("Unexpected language kind!");
466}
467
468static void FileSystemOptsToArgs(const FileSystemOptions &Opts, ToArgsList &Res){
469  if (!Opts.WorkingDir.empty())
470    Res.push_back("-working-directory", Opts.WorkingDir);
471}
472
473static void CodeCompleteOptionsToArgs(const CodeCompleteOptions &Opts,
474                                      ToArgsList &Res) {
475  if (Opts.IncludeMacros)
476    Res.push_back("-code-completion-macros");
477  if (Opts.IncludeCodePatterns)
478    Res.push_back("-code-completion-patterns");
479  if (!Opts.IncludeGlobals)
480    Res.push_back("-no-code-completion-globals");
481  if (Opts.IncludeBriefComments)
482    Res.push_back("-code-completion-brief-comments");
483}
484
485static void FrontendOptsToArgs(const FrontendOptions &Opts, ToArgsList &Res) {
486  if (Opts.DisableFree)
487    Res.push_back("-disable-free");
488  if (Opts.RelocatablePCH)
489    Res.push_back("-relocatable-pch");
490  if (Opts.ShowHelp)
491    Res.push_back("-help");
492  if (Opts.ShowStats)
493    Res.push_back("-print-stats");
494  if (Opts.ShowTimers)
495    Res.push_back("-ftime-report");
496  if (Opts.ShowVersion)
497    Res.push_back("-version");
498  if (Opts.FixWhatYouCan)
499    Res.push_back("-fix-what-you-can");
500  if (Opts.FixOnlyWarnings)
501    Res.push_back("-fix-only-warnings");
502  if (Opts.FixAndRecompile)
503    Res.push_back("-fixit-recompile");
504  if (Opts.FixToTemporaries)
505    Res.push_back("-fixit-to-temporary");
506  switch (Opts.ARCMTAction) {
507  case FrontendOptions::ARCMT_None:
508    break;
509  case FrontendOptions::ARCMT_Check:
510    Res.push_back("-arcmt-check");
511    break;
512  case FrontendOptions::ARCMT_Modify:
513    Res.push_back("-arcmt-modify");
514    break;
515  case FrontendOptions::ARCMT_Migrate:
516    Res.push_back("-arcmt-migrate");
517    break;
518  }
519  CodeCompleteOptionsToArgs(Opts.CodeCompleteOpts, Res);
520  if (!Opts.MTMigrateDir.empty())
521    Res.push_back("-mt-migrate-directory", Opts.MTMigrateDir);
522  if (!Opts.ARCMTMigrateReportOut.empty())
523    Res.push_back("-arcmt-migrate-report-output", Opts.ARCMTMigrateReportOut);
524  if (Opts.ARCMTMigrateEmitARCErrors)
525    Res.push_back("-arcmt-migrate-emit-errors");
526
527  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals)
528    Res.push_back("-objcmt-migrate-literals");
529  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting)
530    Res.push_back("-objcmt-migrate-subscripting");
531
532  bool NeedLang = false;
533  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
534    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].File) !=
535        Opts.Inputs[i].Kind)
536      NeedLang = true;
537  if (NeedLang)
538    Res.push_back("-x", getInputKindName(Opts.Inputs[0].Kind));
539  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
540    assert((!NeedLang || Opts.Inputs[i].Kind == Opts.Inputs[0].Kind) &&
541           "Unable to represent this input vector!");
542    Res.push_back(Opts.Inputs[i].File);
543  }
544
545  if (!Opts.OutputFile.empty())
546    Res.push_back("-o", Opts.OutputFile);
547  if (!Opts.CodeCompletionAt.FileName.empty())
548    Res.push_back("-code-completion-at",
549                  Opts.CodeCompletionAt.FileName + ":" +
550                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
551                  llvm::utostr(Opts.CodeCompletionAt.Column));
552  if (Opts.ProgramAction != frontend::PluginAction)
553    Res.push_back(getActionName(Opts.ProgramAction));
554  if (!Opts.ActionName.empty()) {
555    Res.push_back("-plugin", Opts.ActionName);
556    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i)
557      Res.push_back("-plugin-arg-" + Opts.ActionName, Opts.PluginArgs[i]);
558  }
559  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i)
560    Res.push_back("-load", Opts.Plugins[i]);
561  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
562    Res.push_back("-add-plugin", Opts.AddPluginActions[i]);
563    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai)
564      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i],
565                    Opts.AddPluginArgs[i][ai]);
566  }
567  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i)
568    Res.push_back("-ast-merge", Opts.ASTMergeFiles[i]);
569  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i)
570    Res.push_back("-mllvm", Opts.LLVMArgs[i]);
571  if (!Opts.OverrideRecordLayoutsFile.empty())
572    Res.push_back("-foverride-record-layout=" + Opts.OverrideRecordLayoutsFile);
573}
574
575static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
576                                   ToArgsList &Res) {
577  if (Opts.Sysroot != "/") {
578    Res.push_back("-isysroot");
579    Res.push_back(Opts.Sysroot);
580  }
581
582  /// User specified include entries.
583  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
584    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
585    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
586      llvm::report_fatal_error("Invalid option set!");
587    if (E.IsUserSupplied) {
588      switch (E.Group) {
589      case frontend::After:
590        Res.push_back("-idirafter");
591        break;
592
593      case frontend::Quoted:
594        Res.push_back("-iquote");
595        break;
596
597      case frontend::System:
598        Res.push_back("-isystem");
599        break;
600
601      case frontend::IndexHeaderMap:
602        Res.push_back("-index-header-map");
603        Res.push_back(E.IsFramework? "-F" : "-I");
604        break;
605
606      case frontend::CSystem:
607        Res.push_back("-c-isystem");
608        break;
609
610      case frontend::CXXSystem:
611        Res.push_back("-cxx-isystem");
612        break;
613
614      case frontend::ObjCSystem:
615        Res.push_back("-objc-isystem");
616        break;
617
618      case frontend::ObjCXXSystem:
619        Res.push_back("-objcxx-isystem");
620        break;
621
622      case frontend::Angled:
623        Res.push_back(E.IsFramework ? "-F" : "-I");
624        break;
625      }
626    } else {
627      if (E.IsInternal) {
628        assert(E.Group == frontend::System && "Unexpected header search group");
629        if (E.ImplicitExternC)
630          Res.push_back("-internal-externc-isystem");
631        else
632          Res.push_back("-internal-isystem");
633      } else {
634        if (E.Group != frontend::Angled && E.Group != frontend::System)
635          llvm::report_fatal_error("Invalid option set!");
636        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
637                      "-iwithprefix");
638      }
639    }
640    Res.push_back(E.Path);
641  }
642
643  /// User-specified system header prefixes.
644  for (unsigned i = 0, e = Opts.SystemHeaderPrefixes.size(); i != e; ++i) {
645    if (Opts.SystemHeaderPrefixes[i].IsSystemHeader)
646      Res.push_back("-isystem-prefix");
647    else
648      Res.push_back("-ino-system-prefix");
649
650    Res.push_back(Opts.SystemHeaderPrefixes[i].Prefix);
651  }
652
653  if (!Opts.ResourceDir.empty())
654    Res.push_back("-resource-dir", Opts.ResourceDir);
655  if (!Opts.ModuleCachePath.empty())
656    Res.push_back("-fmodule-cache-path", Opts.ModuleCachePath);
657  if (!Opts.UseStandardSystemIncludes)
658    Res.push_back("-nostdsysteminc");
659  if (!Opts.UseStandardCXXIncludes)
660    Res.push_back("-nostdinc++");
661  if (Opts.UseLibcxx)
662    Res.push_back("-stdlib=libc++");
663  if (Opts.Verbose)
664    Res.push_back("-v");
665}
666
667static void LangOptsToArgs(const LangOptions &Opts, ToArgsList &Res) {
668  LangOptions DefaultLangOpts;
669
670  // FIXME: Need to set -std to get all the implicit options.
671
672  // FIXME: We want to only pass options relative to the defaults, which
673  // requires constructing a target. :(
674  //
675  // It would be better to push the all target specific choices into the driver,
676  // so that everything below that was more uniform.
677
678  if (Opts.Trigraphs)
679    Res.push_back("-trigraphs");
680  // Implicit based on the input kind:
681  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
682  // Implicit based on the input language standard:
683  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
684  if (Opts.DollarIdents)
685    Res.push_back("-fdollars-in-identifiers");
686  if (Opts.GNUMode && !Opts.GNUKeywords)
687    Res.push_back("-fno-gnu-keywords");
688  if (!Opts.GNUMode && Opts.GNUKeywords)
689    Res.push_back("-fgnu-keywords");
690  if (Opts.MicrosoftExt)
691    Res.push_back("-fms-extensions");
692  if (Opts.MicrosoftMode)
693    Res.push_back("-fms-compatibility");
694  if (Opts.MSCVersion != 0)
695    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
696  if (Opts.Borland)
697    Res.push_back("-fborland-extensions");
698  if (Opts.ObjCDefaultSynthProperties)
699    Res.push_back("-fobjc-default-synthesize-properties");
700  // NoInline is implicit.
701  if (!Opts.CXXOperatorNames)
702    Res.push_back("-fno-operator-names");
703  if (Opts.PascalStrings)
704    Res.push_back("-fpascal-strings");
705  if (Opts.CatchUndefined)
706    Res.push_back("-fcatch-undefined-behavior");
707  if (Opts.AddressSanitizer)
708    Res.push_back("-faddress-sanitizer");
709  if (Opts.ThreadSanitizer)
710    Res.push_back("-fthread-sanitizer");
711  if (Opts.WritableStrings)
712    Res.push_back("-fwritable-strings");
713  if (Opts.ConstStrings)
714    Res.push_back("-fconst-strings");
715  if (!Opts.LaxVectorConversions)
716    Res.push_back("-fno-lax-vector-conversions");
717  if (Opts.AltiVec)
718    Res.push_back("-faltivec");
719  if (Opts.Exceptions)
720    Res.push_back("-fexceptions");
721  if (Opts.ObjCExceptions)
722    Res.push_back("-fobjc-exceptions");
723  if (Opts.CXXExceptions)
724    Res.push_back("-fcxx-exceptions");
725  if (Opts.SjLjExceptions)
726    Res.push_back("-fsjlj-exceptions");
727  if (Opts.TraditionalCPP)
728    Res.push_back("-traditional-cpp");
729  if (!Opts.RTTI)
730    Res.push_back("-fno-rtti");
731  if (Opts.MSBitfields)
732    Res.push_back("-mms-bitfields");
733  if (Opts.Freestanding)
734    Res.push_back("-ffreestanding");
735  if (Opts.NoBuiltin)
736    Res.push_back("-fno-builtin");
737  if (!Opts.AssumeSaneOperatorNew)
738    Res.push_back("-fno-assume-sane-operator-new");
739  if (!Opts.ThreadsafeStatics)
740    Res.push_back("-fno-threadsafe-statics");
741  if (Opts.POSIXThreads)
742    Res.push_back("-pthread");
743  if (Opts.Blocks)
744    Res.push_back("-fblocks");
745  if (Opts.BlocksRuntimeOptional)
746    Res.push_back("-fblocks-runtime-optional");
747  if (Opts.Modules)
748    Res.push_back("-fmodules");
749  if (Opts.EmitAllDecls)
750    Res.push_back("-femit-all-decls");
751  if (Opts.MathErrno)
752    Res.push_back("-fmath-errno");
753  switch (Opts.getSignedOverflowBehavior()) {
754  case LangOptions::SOB_Undefined: break;
755  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
756  case LangOptions::SOB_Trapping:
757    Res.push_back("-ftrapv");
758    if (!Opts.OverflowHandler.empty())
759      Res.push_back("-ftrapv-handler", Opts.OverflowHandler);
760    break;
761  }
762  if (Opts.HeinousExtensions)
763    Res.push_back("-fheinous-gnu-extensions");
764  // Optimize is implicit.
765  // OptimizeSize is implicit.
766  if (Opts.FastMath)
767    Res.push_back("-ffast-math");
768  if (Opts.Static)
769    Res.push_back("-static-define");
770  if (Opts.DumpRecordLayoutsSimple)
771    Res.push_back("-fdump-record-layouts-simple");
772  else if (Opts.DumpRecordLayouts)
773    Res.push_back("-fdump-record-layouts");
774  if (Opts.DumpVTableLayouts)
775    Res.push_back("-fdump-vtable-layouts");
776  if (Opts.NoBitFieldTypeAlign)
777    Res.push_back("-fno-bitfield-type-alignment");
778  if (Opts.PICLevel)
779    Res.push_back("-pic-level", llvm::utostr(Opts.PICLevel));
780  if (Opts.PIELevel)
781    Res.push_back("-pie-level", llvm::utostr(Opts.PIELevel));
782  if (Opts.ObjCGCBitmapPrint)
783    Res.push_back("-print-ivar-layout");
784  if (Opts.NoConstantCFStrings)
785    Res.push_back("-fno-constant-cfstrings");
786  if (!Opts.AccessControl)
787    Res.push_back("-fno-access-control");
788  if (!Opts.CharIsSigned)
789    Res.push_back("-fno-signed-char");
790  if (Opts.ShortWChar)
791    Res.push_back("-fshort-wchar");
792  if (!Opts.ElideConstructors)
793    Res.push_back("-fno-elide-constructors");
794  if (Opts.getGC() != LangOptions::NonGC) {
795    if (Opts.getGC() == LangOptions::HybridGC) {
796      Res.push_back("-fobjc-gc");
797    } else {
798      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
799      Res.push_back("-fobjc-gc-only");
800    }
801  }
802  Res.push_back("-fobjc-runtime=" + Opts.ObjCRuntime.getAsString());
803  if (Opts.ObjCAutoRefCount)
804    Res.push_back("-fobjc-arc");
805  if (Opts.ObjCRuntimeHasWeak)
806    Res.push_back("-fobjc-runtime-has-weak");
807  if (!Opts.ObjCInferRelatedResultType)
808    Res.push_back("-fno-objc-infer-related-result-type");
809
810  if (Opts.AppleKext)
811    Res.push_back("-fapple-kext");
812
813  if (Opts.getVisibilityMode() != DefaultVisibility) {
814    Res.push_back("-fvisibility");
815    if (Opts.getVisibilityMode() == HiddenVisibility) {
816      Res.push_back("hidden");
817    } else {
818      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
819             "Invalid visibility!");
820      Res.push_back("protected");
821    }
822  }
823  if (Opts.InlineVisibilityHidden)
824    Res.push_back("-fvisibility-inlines-hidden");
825
826  if (Opts.getStackProtector() != 0)
827    Res.push_back("-stack-protector", llvm::utostr(Opts.getStackProtector()));
828  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth)
829    Res.push_back("-ftemplate-depth", llvm::utostr(Opts.InstantiationDepth));
830  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth)
831    Res.push_back("-fconstexpr-depth", llvm::utostr(Opts.ConstexprCallDepth));
832  if (!Opts.ObjCConstantStringClass.empty())
833    Res.push_back("-fconstant-string-class", Opts.ObjCConstantStringClass);
834  if (Opts.FakeAddressSpaceMap)
835    Res.push_back("-ffake-address-space-map");
836  if (Opts.ParseUnknownAnytype)
837    Res.push_back("-funknown-anytype");
838  if (Opts.DebuggerSupport)
839    Res.push_back("-fdebugger-support");
840  if (Opts.DebuggerCastResultToId)
841    Res.push_back("-fdebugger-cast-result-to-id");
842  if (Opts.DebuggerObjCLiteral)
843    Res.push_back("-fdebugger-objc-literal");
844  if (Opts.DelayedTemplateParsing)
845    Res.push_back("-fdelayed-template-parsing");
846  if (Opts.Deprecated)
847    Res.push_back("-fdeprecated-macro");
848  if (Opts.ApplePragmaPack)
849    Res.push_back("-fapple-pragma-pack");
850  if (!Opts.CurrentModule.empty())
851    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
852}
853
854static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
855                                   ToArgsList &Res) {
856  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
857    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
858                  Opts.Macros[i].first);
859  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
860    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
861    Res.push_back("-include", Opts.Includes[i]);
862  }
863  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i)
864    Res.push_back("-imacros", Opts.MacroIncludes[i]);
865  if (!Opts.UsePredefines)
866    Res.push_back("-undef");
867  if (Opts.DetailedRecord)
868    Res.push_back("-detailed-preprocessing-record");
869  if (!Opts.ImplicitPCHInclude.empty())
870    Res.push_back("-include-pch", Opts.ImplicitPCHInclude);
871  if (!Opts.ImplicitPTHInclude.empty())
872    Res.push_back("-include-pth", Opts.ImplicitPTHInclude);
873  if (!Opts.TokenCache.empty()) {
874    if (Opts.ImplicitPTHInclude.empty())
875      Res.push_back("-token-cache", Opts.TokenCache);
876    else
877      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
878             "Unsupported option combination!");
879  }
880  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i)
881    Res.push_back("-chain-include", Opts.ChainedIncludes[i]);
882  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
883    Res.push_back("-remap-file", Opts.RemappedFiles[i].first + ";" +
884                                 Opts.RemappedFiles[i].second);
885  }
886}
887
888static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
889                                         ToArgsList &Res) {
890  if (!Opts.ShowCPP && !Opts.ShowMacros)
891    llvm::report_fatal_error("Invalid option combination!");
892
893  if (Opts.ShowCPP && Opts.ShowMacros)
894    Res.push_back("-dD");
895  else if (!Opts.ShowCPP && Opts.ShowMacros)
896    Res.push_back("-dM");
897
898  if (!Opts.ShowLineMarkers)
899    Res.push_back("-P");
900  if (Opts.ShowComments)
901    Res.push_back("-C");
902  if (Opts.ShowMacroComments)
903    Res.push_back("-CC");
904}
905
906static void TargetOptsToArgs(const TargetOptions &Opts,
907                             ToArgsList &Res) {
908  Res.push_back("-triple");
909  Res.push_back(Opts.Triple);
910  if (!Opts.CPU.empty())
911    Res.push_back("-target-cpu", Opts.CPU);
912  if (!Opts.ABI.empty())
913    Res.push_back("-target-abi", Opts.ABI);
914  if (!Opts.LinkerVersion.empty())
915    Res.push_back("-target-linker-version", Opts.LinkerVersion);
916  if (!Opts.CXXABI.empty())
917    Res.push_back("-cxx-abi", Opts.CXXABI);
918  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i)
919    Res.push_back("-target-feature", Opts.Features[i]);
920}
921
922void CompilerInvocation::toArgs(std::vector<std::string> &Res) const {
923  ToArgsList List(Res);
924  AnalyzerOptsToArgs(getAnalyzerOpts(), List);
925  CodeGenOptsToArgs(getCodeGenOpts(), List);
926  DependencyOutputOptsToArgs(getDependencyOutputOpts(), List);
927  DiagnosticOptsToArgs(getDiagnosticOpts(), List);
928  FileSystemOptsToArgs(getFileSystemOpts(), List);
929  FrontendOptsToArgs(getFrontendOpts(), List);
930  HeaderSearchOptsToArgs(getHeaderSearchOpts(), List);
931  LangOptsToArgs(*getLangOpts(), List);
932  PreprocessorOptsToArgs(getPreprocessorOpts(), List);
933  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), List);
934  TargetOptsToArgs(getTargetOpts(), List);
935}
936
937//===----------------------------------------------------------------------===//
938// Deserialization (to args)
939//===----------------------------------------------------------------------===//
940
941using namespace clang::driver;
942using namespace clang::driver::options;
943
944//
945
946static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
947                                     DiagnosticsEngine &Diags) {
948  unsigned DefaultOpt = 0;
949  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
950    DefaultOpt = 2;
951
952  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
953    if (A->getOption().matches(options::OPT_O0))
954      return 0;
955
956    assert (A->getOption().matches(options::OPT_O));
957
958    llvm::StringRef S(A->getValue(Args));
959    if (S == "s" || S == "z" || S.empty())
960      return 2;
961
962    return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
963  }
964
965  return DefaultOpt;
966}
967
968static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK,
969                                         DiagnosticsEngine &Diags) {
970  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
971    if (A->getOption().matches(options::OPT_O)) {
972      switch (A->getValue(Args)[0]) {
973      default:
974        return 0;
975      case 's':
976        return 1;
977      case 'z':
978        return 2;
979      }
980    }
981  }
982  return 0;
983}
984
985static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
986  for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
987         E = Args.filtered_end(); I != E; ++I) {
988    Arg *A = *I;
989    // If the argument is a pure flag, add its name (minus the "-W" at the beginning)
990    // to the warning list. Else, add its value (for the OPT_W case).
991    if (A->getOption().getKind() == Option::FlagClass) {
992      Warnings.push_back(A->getOption().getName().substr(2));
993    } else {
994      for (unsigned Idx = 0, End = A->getNumValues();
995           Idx < End; ++Idx) {
996        StringRef V = A->getValue(Args, Idx);
997        // "-Wl," and such are not warning options.
998        // FIXME: Should be handled by putting these in separate flags.
999        if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
1000          continue;
1001
1002        Warnings.push_back(V);
1003      }
1004    }
1005  }
1006}
1007
1008static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
1009                              DiagnosticsEngine &Diags) {
1010  using namespace options;
1011  bool Success = true;
1012  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
1013    StringRef Name = A->getValue(Args);
1014    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
1015#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
1016      .Case(CMDFLAG, NAME##Model)
1017#include "clang/Frontend/Analyses.def"
1018      .Default(NumStores);
1019    if (Value == NumStores) {
1020      Diags.Report(diag::err_drv_invalid_value)
1021        << A->getAsString(Args) << Name;
1022      Success = false;
1023    } else {
1024      Opts.AnalysisStoreOpt = Value;
1025    }
1026  }
1027
1028  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
1029    StringRef Name = A->getValue(Args);
1030    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
1031#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
1032      .Case(CMDFLAG, NAME##Model)
1033#include "clang/Frontend/Analyses.def"
1034      .Default(NumConstraints);
1035    if (Value == NumConstraints) {
1036      Diags.Report(diag::err_drv_invalid_value)
1037        << A->getAsString(Args) << Name;
1038      Success = false;
1039    } else {
1040      Opts.AnalysisConstraintsOpt = Value;
1041    }
1042  }
1043
1044  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
1045    StringRef Name = A->getValue(Args);
1046    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
1047#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
1048      .Case(CMDFLAG, PD_##NAME)
1049#include "clang/Frontend/Analyses.def"
1050      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
1051    if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
1052      Diags.Report(diag::err_drv_invalid_value)
1053        << A->getAsString(Args) << Name;
1054      Success = false;
1055    } else {
1056      Opts.AnalysisDiagOpt = Value;
1057    }
1058  }
1059
1060  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
1061    StringRef Name = A->getValue(Args);
1062    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
1063#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
1064      .Case(CMDFLAG, NAME)
1065#include "clang/Frontend/Analyses.def"
1066      .Default(NumPurgeModes);
1067    if (Value == NumPurgeModes) {
1068      Diags.Report(diag::err_drv_invalid_value)
1069        << A->getAsString(Args) << Name;
1070      Success = false;
1071    } else {
1072      Opts.AnalysisPurgeOpt = Value;
1073    }
1074  }
1075
1076  if (Arg *A = Args.getLastArg(OPT_analyzer_ipa)) {
1077    StringRef Name = A->getValue(Args);
1078    AnalysisIPAMode Value = llvm::StringSwitch<AnalysisIPAMode>(Name)
1079#define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \
1080      .Case(CMDFLAG, NAME)
1081#include "clang/Frontend/Analyses.def"
1082      .Default(NumIPAModes);
1083    if (Value == NumIPAModes) {
1084      Diags.Report(diag::err_drv_invalid_value)
1085        << A->getAsString(Args) << Name;
1086      Success = false;
1087    } else {
1088      Opts.IPAMode = Value;
1089    }
1090  }
1091
1092  if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
1093    StringRef Name = A->getValue(Args);
1094    AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
1095#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
1096      .Case(CMDFLAG, NAME)
1097#include "clang/Frontend/Analyses.def"
1098      .Default(NumInliningModes);
1099    if (Value == NumInliningModes) {
1100      Diags.Report(diag::err_drv_invalid_value)
1101        << A->getAsString(Args) << Name;
1102      Success = false;
1103    } else {
1104      Opts.InliningMode = Value;
1105    }
1106  }
1107
1108  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1109  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1110  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1111  Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
1112  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1113  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1114  Opts.AnalyzeNestedBlocks =
1115    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1116  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1117  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1118  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1119  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1120  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1121  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1122  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1123  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1124  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1125  Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
1126  Opts.InlineMaxStackDepth =
1127    Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
1128                            Opts.InlineMaxStackDepth, Diags);
1129  Opts.InlineMaxFunctionSize =
1130    Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size,
1131                            Opts.InlineMaxFunctionSize, Diags);
1132
1133  Opts.CheckersControlList.clear();
1134  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1135                                             OPT_analyzer_disable_checker),
1136         ie = Args.filtered_end(); it != ie; ++it) {
1137    const Arg *A = *it;
1138    A->claim();
1139    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1140    // We can have a list of comma separated checker names, e.g:
1141    // '-analyzer-checker=cocoa,unix'
1142    StringRef checkerList = A->getValue(Args);
1143    SmallVector<StringRef, 4> checkers;
1144    checkerList.split(checkers, ",");
1145    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1146      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1147  }
1148
1149  return Success;
1150}
1151
1152static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
1153  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
1154  Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
1155  return true;
1156}
1157
1158static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1159                             DiagnosticsEngine &Diags) {
1160  using namespace options;
1161  bool Success = true;
1162
1163  unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
1164  if (OptLevel > 3) {
1165    Diags.Report(diag::err_drv_invalid_value)
1166      << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
1167    OptLevel = 3;
1168    Success = false;
1169  }
1170  Opts.OptimizationLevel = OptLevel;
1171
1172  // We must always run at least the always inlining pass.
1173  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1174    : CodeGenOptions::OnlyAlwaysInlining;
1175  // -fno-inline-functions overrides OptimizationLevel > 1.
1176  Opts.NoInline = Args.hasArg(OPT_fno_inline);
1177  Opts.Inlining = Args.hasArg(OPT_fno_inline_functions) ?
1178    CodeGenOptions::OnlyAlwaysInlining : Opts.Inlining;
1179
1180  if (Args.hasArg(OPT_gline_tables_only)) {
1181    Opts.DebugInfo = CodeGenOptions::DebugLineTablesOnly;
1182  } else if (Args.hasArg(OPT_g_Flag)) {
1183    if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
1184      Opts.DebugInfo = CodeGenOptions::LimitedDebugInfo;
1185    else
1186      Opts.DebugInfo = CodeGenOptions::FullDebugInfo;
1187  }
1188
1189  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1190  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1191  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1192  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1193    OPT_fuse_register_sized_bitfield_access);
1194  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1195  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1196  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1197  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1198  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1199  Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
1200  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1201                            Args.hasArg(OPT_ffreestanding));
1202  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1203                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1204
1205  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1206  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1207  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1208  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1209  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1210  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1211  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1212  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1213  Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
1214  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1215  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1216  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1217  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1218  Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
1219                       Args.hasArg(OPT_cl_finite_math_only)||
1220                       Args.hasArg(OPT_cl_fast_relaxed_math));
1221  Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
1222                       Args.hasArg(OPT_cl_finite_math_only)||
1223                       Args.hasArg(OPT_cl_fast_relaxed_math));
1224  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1225  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1226  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1227  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1228  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1229  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1230  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1231  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1232  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1233  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1234  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1235  Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
1236  Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
1237                      Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1238                      Args.hasArg(OPT_cl_fast_relaxed_math);
1239  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1240  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1241  Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
1242  Opts.BoundsChecking = Args.getLastArgIntValue(OPT_fbounds_checking_EQ, 0,
1243                                                Diags);
1244  Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
1245
1246  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1247  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1248
1249  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1250  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1251
1252  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1253  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1254  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1255  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1256  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1257  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1258  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1259  Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1260  if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1261    StringRef Val = A->getValue(Args);
1262    Val.getAsInteger(10, Opts.StackAlignment);
1263  }
1264
1265  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1266    StringRef Name = A->getValue(Args);
1267    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1268      .Case("legacy", CodeGenOptions::Legacy)
1269      .Case("non-legacy", CodeGenOptions::NonLegacy)
1270      .Case("mixed", CodeGenOptions::Mixed)
1271      .Default(~0U);
1272    if (Method == ~0U) {
1273      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1274      Success = false;
1275    } else {
1276      Opts.ObjCDispatchMethod = Method;
1277    }
1278  }
1279
1280  if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
1281    StringRef Name = A->getValue(Args);
1282    unsigned Model = llvm::StringSwitch<unsigned>(Name)
1283        .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
1284        .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
1285        .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
1286        .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
1287        .Default(~0U);
1288    if (Model == ~0U) {
1289      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1290      Success = false;
1291    } else {
1292      Opts.DefaultTLSModel = static_cast<CodeGenOptions::TLSModel>(Model);
1293    }
1294  }
1295
1296  return Success;
1297}
1298
1299static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1300                                      ArgList &Args) {
1301  using namespace options;
1302  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1303  Opts.Targets = Args.getAllArgValues(OPT_MT);
1304  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1305  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1306  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1307  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1308  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1309  Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1310}
1311
1312bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1313                                DiagnosticsEngine *Diags) {
1314  using namespace options;
1315  bool Success = true;
1316
1317  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1318  Opts.DiagnosticSerializationFile =
1319    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1320  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1321  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1322  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1323  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1324  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1325  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1326  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1327                                 OPT_fno_show_column,
1328                                 /*Default=*/true);
1329  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1330  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1331  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1332
1333  // Default behavior is to not to show note include stacks.
1334  Opts.ShowNoteIncludeStack = false;
1335  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1336                               OPT_fno_diagnostics_show_note_include_stack))
1337    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1338      Opts.ShowNoteIncludeStack = true;
1339
1340  StringRef ShowOverloads =
1341    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1342  if (ShowOverloads == "best")
1343    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1344  else if (ShowOverloads == "all")
1345    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1346  else {
1347    Success = false;
1348    if (Diags)
1349      Diags->Report(diag::err_drv_invalid_value)
1350      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1351      << ShowOverloads;
1352  }
1353
1354  StringRef ShowCategory =
1355    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1356  if (ShowCategory == "none")
1357    Opts.ShowCategories = 0;
1358  else if (ShowCategory == "id")
1359    Opts.ShowCategories = 1;
1360  else if (ShowCategory == "name")
1361    Opts.ShowCategories = 2;
1362  else {
1363    Success = false;
1364    if (Diags)
1365      Diags->Report(diag::err_drv_invalid_value)
1366      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1367      << ShowCategory;
1368  }
1369
1370  StringRef Format =
1371    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1372  if (Format == "clang")
1373    Opts.Format = DiagnosticOptions::Clang;
1374  else if (Format == "msvc")
1375    Opts.Format = DiagnosticOptions::Msvc;
1376  else if (Format == "vi")
1377    Opts.Format = DiagnosticOptions::Vi;
1378  else {
1379    Success = false;
1380    if (Diags)
1381      Diags->Report(diag::err_drv_invalid_value)
1382      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1383      << Format;
1384  }
1385
1386  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1387  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1388  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1389  Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1390  Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1391  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1392  Opts.MacroBacktraceLimit
1393    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1394                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1395  Opts.TemplateBacktraceLimit
1396    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1397                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1398                         Diags);
1399  Opts.ConstexprBacktraceLimit
1400    = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
1401                         DiagnosticOptions::DefaultConstexprBacktraceLimit,
1402                         Diags);
1403  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1404                                    DiagnosticOptions::DefaultTabStop, Diags);
1405  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1406    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1407    if (Diags)
1408      Diags->Report(diag::warn_ignoring_ftabstop_value)
1409      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1410  }
1411  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1412  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1413  addWarningArgs(Args, Opts.Warnings);
1414
1415  return Success;
1416}
1417
1418static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1419  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1420}
1421
1422static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1423                                   DiagnosticsEngine &Diags) {
1424  using namespace options;
1425  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1426  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1427    switch (A->getOption().getID()) {
1428    default:
1429      llvm_unreachable("Invalid option in group!");
1430    case OPT_ast_dump:
1431      Opts.ProgramAction = frontend::ASTDump; break;
1432    case OPT_ast_dump_xml:
1433      Opts.ProgramAction = frontend::ASTDumpXML; break;
1434    case OPT_ast_print:
1435      Opts.ProgramAction = frontend::ASTPrint; break;
1436    case OPT_ast_view:
1437      Opts.ProgramAction = frontend::ASTView; break;
1438    case OPT_dump_raw_tokens:
1439      Opts.ProgramAction = frontend::DumpRawTokens; break;
1440    case OPT_dump_tokens:
1441      Opts.ProgramAction = frontend::DumpTokens; break;
1442    case OPT_S:
1443      Opts.ProgramAction = frontend::EmitAssembly; break;
1444    case OPT_emit_llvm_bc:
1445      Opts.ProgramAction = frontend::EmitBC; break;
1446    case OPT_emit_html:
1447      Opts.ProgramAction = frontend::EmitHTML; break;
1448    case OPT_emit_llvm:
1449      Opts.ProgramAction = frontend::EmitLLVM; break;
1450    case OPT_emit_llvm_only:
1451      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1452    case OPT_emit_codegen_only:
1453      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1454    case OPT_emit_obj:
1455      Opts.ProgramAction = frontend::EmitObj; break;
1456    case OPT_fixit_EQ:
1457      Opts.FixItSuffix = A->getValue(Args);
1458      // fall-through!
1459    case OPT_fixit:
1460      Opts.ProgramAction = frontend::FixIt; break;
1461    case OPT_emit_module:
1462      Opts.ProgramAction = frontend::GenerateModule; break;
1463    case OPT_emit_pch:
1464      Opts.ProgramAction = frontend::GeneratePCH; break;
1465    case OPT_emit_pth:
1466      Opts.ProgramAction = frontend::GeneratePTH; break;
1467    case OPT_init_only:
1468      Opts.ProgramAction = frontend::InitOnly; break;
1469    case OPT_fsyntax_only:
1470      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1471    case OPT_print_decl_contexts:
1472      Opts.ProgramAction = frontend::PrintDeclContext; break;
1473    case OPT_print_preamble:
1474      Opts.ProgramAction = frontend::PrintPreamble; break;
1475    case OPT_E:
1476      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1477    case OPT_rewrite_macros:
1478      Opts.ProgramAction = frontend::RewriteMacros; break;
1479    case OPT_rewrite_objc:
1480      Opts.ProgramAction = frontend::RewriteObjC; break;
1481    case OPT_rewrite_test:
1482      Opts.ProgramAction = frontend::RewriteTest; break;
1483    case OPT_analyze:
1484      Opts.ProgramAction = frontend::RunAnalysis; break;
1485    case OPT_migrate:
1486      Opts.ProgramAction = frontend::MigrateSource; break;
1487    case OPT_Eonly:
1488      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1489    }
1490  }
1491
1492  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1493    Opts.Plugins.push_back(A->getValue(Args,0));
1494    Opts.ProgramAction = frontend::PluginAction;
1495    Opts.ActionName = A->getValue(Args);
1496
1497    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1498           end = Args.filtered_end(); it != end; ++it) {
1499      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1500        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1501    }
1502  }
1503
1504  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1505  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1506  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1507    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1508           end = Args.filtered_end(); it != end; ++it) {
1509      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1510        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1511    }
1512  }
1513
1514  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1515    Opts.CodeCompletionAt =
1516      ParsedSourceLocation::FromString(A->getValue(Args));
1517    if (Opts.CodeCompletionAt.FileName.empty())
1518      Diags.Report(diag::err_drv_invalid_value)
1519        << A->getAsString(Args) << A->getValue(Args);
1520  }
1521  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1522
1523  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1524  Opts.Plugins = Args.getAllArgValues(OPT_load);
1525  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1526  Opts.ShowHelp = Args.hasArg(OPT_help);
1527  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1528  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1529  Opts.ShowVersion = Args.hasArg(OPT_version);
1530  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1531  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1532  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1533  Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1534  Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1535  Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1536
1537  Opts.CodeCompleteOpts.IncludeMacros
1538    = Args.hasArg(OPT_code_completion_macros);
1539  Opts.CodeCompleteOpts.IncludeCodePatterns
1540    = Args.hasArg(OPT_code_completion_patterns);
1541  Opts.CodeCompleteOpts.IncludeGlobals
1542    = !Args.hasArg(OPT_no_code_completion_globals);
1543  Opts.CodeCompleteOpts.IncludeBriefComments
1544    = Args.hasArg(OPT_code_completion_brief_comments);
1545
1546  Opts.OverrideRecordLayoutsFile
1547    = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1548  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1549                                     OPT_arcmt_modify,
1550                                     OPT_arcmt_migrate)) {
1551    switch (A->getOption().getID()) {
1552    default:
1553      llvm_unreachable("missed a case");
1554    case OPT_arcmt_check:
1555      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1556      break;
1557    case OPT_arcmt_modify:
1558      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1559      break;
1560    case OPT_arcmt_migrate:
1561      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1562      break;
1563    }
1564  }
1565  Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1566  Opts.ARCMTMigrateReportOut
1567    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1568  Opts.ARCMTMigrateEmitARCErrors
1569    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1570
1571  if (Args.hasArg(OPT_objcmt_migrate_literals))
1572    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1573  if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1574    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1575
1576  if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1577      Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1578    Diags.Report(diag::err_drv_argument_not_allowed_with)
1579      << "ARC migration" << "ObjC migration";
1580  }
1581
1582  InputKind DashX = IK_None;
1583  if (const Arg *A = Args.getLastArg(OPT_x)) {
1584    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1585      .Case("c", IK_C)
1586      .Case("cl", IK_OpenCL)
1587      .Case("cuda", IK_CUDA)
1588      .Case("c++", IK_CXX)
1589      .Case("objective-c", IK_ObjC)
1590      .Case("objective-c++", IK_ObjCXX)
1591      .Case("cpp-output", IK_PreprocessedC)
1592      .Case("assembler-with-cpp", IK_Asm)
1593      .Case("c++-cpp-output", IK_PreprocessedCXX)
1594      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1595      .Case("objc-cpp-output", IK_PreprocessedObjC)
1596      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1597      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1598      .Case("c-header", IK_C)
1599      .Case("cl-header", IK_OpenCL)
1600      .Case("objective-c-header", IK_ObjC)
1601      .Case("c++-header", IK_CXX)
1602      .Case("objective-c++-header", IK_ObjCXX)
1603      .Case("ast", IK_AST)
1604      .Case("ir", IK_LLVM_IR)
1605      .Default(IK_None);
1606    if (DashX == IK_None)
1607      Diags.Report(diag::err_drv_invalid_value)
1608        << A->getAsString(Args) << A->getValue(Args);
1609  }
1610
1611  // '-' is the default input if none is given.
1612  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1613  Opts.Inputs.clear();
1614  if (Inputs.empty())
1615    Inputs.push_back("-");
1616  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1617    InputKind IK = DashX;
1618    if (IK == IK_None) {
1619      IK = FrontendOptions::getInputKindForExtension(
1620        StringRef(Inputs[i]).rsplit('.').second);
1621      // FIXME: Remove this hack.
1622      if (i == 0)
1623        DashX = IK;
1624    }
1625    Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1626  }
1627
1628  return DashX;
1629}
1630
1631std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1632                                                 void *MainAddr) {
1633  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1634
1635  if (!P.isEmpty()) {
1636    P.eraseComponent();  // Remove /clang from foo/bin/clang
1637    P.eraseComponent();  // Remove /bin   from foo/bin
1638
1639    // Get foo/lib/clang/<version>/include
1640    P.appendComponent("lib");
1641    P.appendComponent("clang");
1642    P.appendComponent(CLANG_VERSION_STRING);
1643  }
1644
1645  return P.str();
1646}
1647
1648static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1649  using namespace options;
1650  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1651  Opts.Verbose = Args.hasArg(OPT_v);
1652  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1653  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1654  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1655  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1656    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1657  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1658  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1659  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1660
1661  // Add -I..., -F..., and -index-header-map options in order.
1662  bool IsIndexHeaderMap = false;
1663  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1664                                             OPT_index_header_map),
1665       ie = Args.filtered_end(); it != ie; ++it) {
1666    if ((*it)->getOption().matches(OPT_index_header_map)) {
1667      // -index-header-map applies to the next -I or -F.
1668      IsIndexHeaderMap = true;
1669      continue;
1670    }
1671
1672    frontend::IncludeDirGroup Group
1673      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1674
1675    Opts.AddPath((*it)->getValue(Args), Group, true,
1676                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1677    IsIndexHeaderMap = false;
1678  }
1679
1680  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1681  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1682  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1683                                             OPT_iwithprefixbefore),
1684         ie = Args.filtered_end(); it != ie; ++it) {
1685    const Arg *A = *it;
1686    if (A->getOption().matches(OPT_iprefix))
1687      Prefix = A->getValue(Args);
1688    else if (A->getOption().matches(OPT_iwithprefix))
1689      Opts.AddPath(Prefix.str() + A->getValue(Args),
1690                   frontend::System, false, false, false);
1691    else
1692      Opts.AddPath(Prefix.str() + A->getValue(Args),
1693                   frontend::Angled, false, false, false);
1694  }
1695
1696  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1697         ie = Args.filtered_end(); it != ie; ++it)
1698    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1699  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1700         ie = Args.filtered_end(); it != ie; ++it)
1701    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1702  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1703         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1704    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1705                 !(*it)->getOption().matches(OPT_iwithsysroot));
1706  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1707         ie = Args.filtered_end(); it != ie; ++it)
1708    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1709                 true);
1710
1711  // Add the paths for the various language specific isystem flags.
1712  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1713       ie = Args.filtered_end(); it != ie; ++it)
1714    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1715  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1716       ie = Args.filtered_end(); it != ie; ++it)
1717    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1718  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1719       ie = Args.filtered_end(); it != ie; ++it)
1720    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1721  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1722       ie = Args.filtered_end(); it != ie; ++it)
1723    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1724                 true);
1725
1726  // Add the internal paths from a driver that detects standard include paths.
1727  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1728                                            OPT_internal_externc_isystem),
1729                    E = Args.filtered_end();
1730       I != E; ++I)
1731    Opts.AddPath((*I)->getValue(Args), frontend::System,
1732                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1733                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1734
1735  // Add the path prefixes which are implicitly treated as being system headers.
1736  for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix,
1737                                            OPT_ino_system_prefix),
1738                    E = Args.filtered_end();
1739       I != E; ++I)
1740    Opts.AddSystemHeaderPrefix((*I)->getValue(Args),
1741                               (*I)->getOption().matches(OPT_isystem_prefix));
1742}
1743
1744void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1745                                         LangStandard::Kind LangStd) {
1746  // Set some properties which depend solely on the input kind; it would be nice
1747  // to move these to the language standard, and have the driver resolve the
1748  // input kind + language standard.
1749  if (IK == IK_Asm) {
1750    Opts.AsmPreprocessor = 1;
1751  } else if (IK == IK_ObjC ||
1752             IK == IK_ObjCXX ||
1753             IK == IK_PreprocessedObjC ||
1754             IK == IK_PreprocessedObjCXX) {
1755    Opts.ObjC1 = Opts.ObjC2 = 1;
1756  }
1757
1758  if (LangStd == LangStandard::lang_unspecified) {
1759    // Based on the base language, pick one.
1760    switch (IK) {
1761    case IK_None:
1762    case IK_AST:
1763    case IK_LLVM_IR:
1764      llvm_unreachable("Invalid input kind!");
1765    case IK_OpenCL:
1766      LangStd = LangStandard::lang_opencl;
1767      break;
1768    case IK_CUDA:
1769      LangStd = LangStandard::lang_cuda;
1770      break;
1771    case IK_Asm:
1772    case IK_C:
1773    case IK_PreprocessedC:
1774    case IK_ObjC:
1775    case IK_PreprocessedObjC:
1776      LangStd = LangStandard::lang_gnu99;
1777      break;
1778    case IK_CXX:
1779    case IK_PreprocessedCXX:
1780    case IK_ObjCXX:
1781    case IK_PreprocessedObjCXX:
1782      LangStd = LangStandard::lang_gnucxx98;
1783      break;
1784    }
1785  }
1786
1787  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1788  Opts.BCPLComment = Std.hasBCPLComments();
1789  Opts.C99 = Std.isC99();
1790  Opts.C11 = Std.isC11();
1791  Opts.CPlusPlus = Std.isCPlusPlus();
1792  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1793  Opts.Digraphs = Std.hasDigraphs();
1794  Opts.GNUMode = Std.isGNUMode();
1795  Opts.GNUInline = !Std.isC99();
1796  Opts.HexFloats = Std.hasHexFloats();
1797  Opts.ImplicitInt = Std.hasImplicitInt();
1798
1799  // Set OpenCL Version.
1800  if (LangStd == LangStandard::lang_opencl) {
1801    Opts.OpenCL = 1;
1802    Opts.OpenCLVersion = 100;
1803  }
1804  else if (LangStd == LangStandard::lang_opencl11) {
1805      Opts.OpenCL = 1;
1806      Opts.OpenCLVersion = 110;
1807  }
1808  else if (LangStd == LangStandard::lang_opencl12) {
1809    Opts.OpenCL = 1;
1810    Opts.OpenCLVersion = 120;
1811  }
1812
1813  // OpenCL has some additional defaults.
1814  if (Opts.OpenCL) {
1815    Opts.AltiVec = 0;
1816    Opts.CXXOperatorNames = 1;
1817    Opts.LaxVectorConversions = 0;
1818    Opts.DefaultFPContract = 1;
1819  }
1820
1821  if (LangStd == LangStandard::lang_cuda)
1822    Opts.CUDA = 1;
1823
1824  // OpenCL and C++ both have bool, true, false keywords.
1825  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1826
1827  Opts.GNUKeywords = Opts.GNUMode;
1828  Opts.CXXOperatorNames = Opts.CPlusPlus;
1829
1830  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1831  // is specified, or -std is set to a conforming mode.
1832  Opts.Trigraphs = !Opts.GNUMode;
1833
1834  Opts.DollarIdents = !Opts.AsmPreprocessor;
1835}
1836
1837static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1838                          DiagnosticsEngine &Diags) {
1839  // FIXME: Cleanup per-file based stuff.
1840  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1841  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1842    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1843#define LANGSTANDARD(id, name, desc, features) \
1844      .Case(name, LangStandard::lang_##id)
1845#include "clang/Frontend/LangStandards.def"
1846      .Default(LangStandard::lang_unspecified);
1847    if (LangStd == LangStandard::lang_unspecified)
1848      Diags.Report(diag::err_drv_invalid_value)
1849        << A->getAsString(Args) << A->getValue(Args);
1850    else {
1851      // Valid standard, check to make sure language and standard are compatable.
1852      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1853      switch (IK) {
1854      case IK_C:
1855      case IK_ObjC:
1856      case IK_PreprocessedC:
1857      case IK_PreprocessedObjC:
1858        if (!(Std.isC89() || Std.isC99()))
1859          Diags.Report(diag::err_drv_argument_not_allowed_with)
1860            << A->getAsString(Args) << "C/ObjC";
1861        break;
1862      case IK_CXX:
1863      case IK_ObjCXX:
1864      case IK_PreprocessedCXX:
1865      case IK_PreprocessedObjCXX:
1866        if (!Std.isCPlusPlus())
1867          Diags.Report(diag::err_drv_argument_not_allowed_with)
1868            << A->getAsString(Args) << "C++/ObjC++";
1869        break;
1870      case IK_OpenCL:
1871        if (!Std.isC99())
1872          Diags.Report(diag::err_drv_argument_not_allowed_with)
1873            << A->getAsString(Args) << "OpenCL";
1874        break;
1875      case IK_CUDA:
1876        if (!Std.isCPlusPlus())
1877          Diags.Report(diag::err_drv_argument_not_allowed_with)
1878            << A->getAsString(Args) << "CUDA";
1879        break;
1880      default:
1881        break;
1882      }
1883    }
1884  }
1885
1886  // -cl-std only applies for OpenCL language standards.
1887  // Override the -std option in this case.
1888  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1889    LangStandard::Kind OpenCLLangStd
1890    = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1891    .Case("CL", LangStandard::lang_opencl)
1892    .Case("CL1.1", LangStandard::lang_opencl11)
1893    .Case("CL1.2", LangStandard::lang_opencl12)
1894    .Default(LangStandard::lang_unspecified);
1895
1896    if (OpenCLLangStd == LangStandard::lang_unspecified) {
1897      Diags.Report(diag::err_drv_invalid_value)
1898      << A->getAsString(Args) << A->getValue(Args);
1899    }
1900    else
1901      LangStd = OpenCLLangStd;
1902  }
1903
1904  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1905
1906  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1907  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1908  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1909  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1910  // name, as it doesn't seem a useful distinction.
1911  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1912                                  Opts.GNUKeywords);
1913
1914  if (Args.hasArg(OPT_fno_operator_names))
1915    Opts.CXXOperatorNames = 0;
1916
1917  if (Opts.ObjC1) {
1918    if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1919      StringRef value = arg->getValue(Args);
1920      if (Opts.ObjCRuntime.tryParse(value))
1921        Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1922    }
1923
1924    if (Args.hasArg(OPT_fobjc_gc_only))
1925      Opts.setGC(LangOptions::GCOnly);
1926    else if (Args.hasArg(OPT_fobjc_gc))
1927      Opts.setGC(LangOptions::HybridGC);
1928    else if (Args.hasArg(OPT_fobjc_arc)) {
1929      Opts.ObjCAutoRefCount = 1;
1930      if (!Opts.ObjCRuntime.isNonFragile())
1931        Diags.Report(diag::err_arc_nonfragile_abi);
1932    }
1933
1934    Opts.ObjCRuntimeHasWeak = Opts.ObjCRuntime.hasWeak();
1935    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1936      Opts.ObjCRuntimeHasWeak = 1;
1937
1938    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1939      Opts.ObjCInferRelatedResultType = 0;
1940  }
1941
1942  if (Args.hasArg(OPT_fgnu89_inline))
1943    Opts.GNUInline = 1;
1944
1945  if (Args.hasArg(OPT_fapple_kext)) {
1946    if (!Opts.CPlusPlus)
1947      Diags.Report(diag::warn_c_kext);
1948    else
1949      Opts.AppleKext = 1;
1950  }
1951
1952  if (Args.hasArg(OPT_print_ivar_layout))
1953    Opts.ObjCGCBitmapPrint = 1;
1954  if (Args.hasArg(OPT_fno_constant_cfstrings))
1955    Opts.NoConstantCFStrings = 1;
1956
1957  if (Args.hasArg(OPT_faltivec))
1958    Opts.AltiVec = 1;
1959
1960  if (Args.hasArg(OPT_pthread))
1961    Opts.POSIXThreads = 1;
1962
1963  if (Args.hasArg(OPT_fdelayed_template_parsing))
1964    Opts.DelayedTemplateParsing = 1;
1965
1966  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1967  if (Vis == "default")
1968    Opts.setVisibilityMode(DefaultVisibility);
1969  else if (Vis == "hidden")
1970    Opts.setVisibilityMode(HiddenVisibility);
1971  else if (Vis == "protected")
1972    // FIXME: diagnose if target does not support protected visibility
1973    Opts.setVisibilityMode(ProtectedVisibility);
1974  else
1975    Diags.Report(diag::err_drv_invalid_value)
1976      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1977
1978  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1979    Opts.InlineVisibilityHidden = 1;
1980
1981  if (Args.hasArg(OPT_ftrapv)) {
1982    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1983    // Set the handler, if one is specified.
1984    Opts.OverflowHandler =
1985        Args.getLastArgValue(OPT_ftrapv_handler);
1986  }
1987  else if (Args.hasArg(OPT_fwrapv))
1988    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1989
1990  if (Args.hasArg(OPT_trigraphs))
1991    Opts.Trigraphs = 1;
1992
1993  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1994                                   OPT_fno_dollars_in_identifiers,
1995                                   Opts.DollarIdents);
1996  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1997  Opts.MicrosoftExt
1998    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1999  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
2000  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
2001  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
2002  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
2003  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
2004                                   Opts.ConstStrings);
2005  if (Args.hasArg(OPT_fno_lax_vector_conversions))
2006    Opts.LaxVectorConversions = 0;
2007  if (Args.hasArg(OPT_fno_threadsafe_statics))
2008    Opts.ThreadsafeStatics = 0;
2009  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
2010  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
2011  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2012  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
2013  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2014
2015  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
2016  Opts.Blocks = Args.hasArg(OPT_fblocks);
2017  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2018  Opts.Modules = Args.hasArg(OPT_fmodules);
2019  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
2020  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
2021  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2022  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2023  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2024  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
2025  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2026  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2027  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2028  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
2029  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512,
2030                                                    Diags);
2031  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
2032                                                    Diags);
2033  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2034  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ,
2035                                                    0, Diags);
2036  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2037  Opts.ObjCConstantStringClass =
2038    Args.getLastArgValue(OPT_fconstant_string_class);
2039  Opts.ObjCDefaultSynthProperties =
2040    Args.hasArg(OPT_fobjc_default_synthesize_properties);
2041  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
2042  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2043  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags);
2044  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
2045  Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags);
2046  Opts.Static = Args.hasArg(OPT_static_define);
2047  Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2048  Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2049                        || Args.hasArg(OPT_fdump_record_layouts);
2050  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2051  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2052  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2053  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2054  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2055  Opts.MRTD = Args.hasArg(OPT_mrtd);
2056  Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2057  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2058  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2059  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2060  Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2061  Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2062  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
2063  Opts.ThreadSanitizer = Args.hasArg(OPT_fthread_sanitizer);
2064  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2065  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
2066
2067  // Record whether the __DEPRECATED define was requested.
2068  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2069                                 OPT_fno_deprecated_macro,
2070                                 Opts.Deprecated);
2071
2072  // FIXME: Eliminate this dependency.
2073  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
2074  Opts.Optimize = Opt != 0;
2075  Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
2076
2077  // This is the __NO_INLINE__ define, which just depends on things like the
2078  // optimization level and -fno-inline, not actually whether the backend has
2079  // inlining enabled.
2080  Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
2081
2082  Opts.FastMath = Args.hasArg(OPT_ffast_math);
2083
2084  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
2085  switch (SSP) {
2086  default:
2087    Diags.Report(diag::err_drv_invalid_value)
2088      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2089    break;
2090  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2091  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
2092  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
2093  }
2094}
2095
2096static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2097                                  FileManager &FileMgr,
2098                                  DiagnosticsEngine &Diags) {
2099  using namespace options;
2100  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2101  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2102  if (const Arg *A = Args.getLastArg(OPT_token_cache))
2103      Opts.TokenCache = A->getValue(Args);
2104  else
2105    Opts.TokenCache = Opts.ImplicitPTHInclude;
2106  Opts.UsePredefines = !Args.hasArg(OPT_undef);
2107  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2108  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2109
2110  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2111  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
2112         ie = Args.filtered_end(); it != ie; ++it) {
2113    const Arg *A = *it;
2114    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
2115  }
2116
2117  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2118    StringRef Value(A->getValue(Args));
2119    size_t Comma = Value.find(',');
2120    unsigned Bytes = 0;
2121    unsigned EndOfLine = 0;
2122
2123    if (Comma == StringRef::npos ||
2124        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2125        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2126      Diags.Report(diag::err_drv_preamble_format);
2127    else {
2128      Opts.PrecompiledPreambleBytes.first = Bytes;
2129      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2130    }
2131  }
2132
2133  // Add macros from the command line.
2134  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
2135         ie = Args.filtered_end(); it != ie; ++it) {
2136    if ((*it)->getOption().matches(OPT_D))
2137      Opts.addMacroDef((*it)->getValue(Args));
2138    else
2139      Opts.addMacroUndef((*it)->getValue(Args));
2140  }
2141
2142  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2143
2144  // Add the ordered list of -includes.
2145  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
2146                                             OPT_include_pth),
2147         ie = Args.filtered_end(); it != ie; ++it) {
2148    const Arg *A = *it;
2149    // PCH is handled specially, we need to extra the original include path.
2150    if (A->getOption().matches(OPT_include_pch)) {
2151      std::string OriginalFile =
2152        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
2153      if (OriginalFile.empty())
2154        continue;
2155
2156      Opts.Includes.push_back(OriginalFile);
2157    } else
2158      Opts.Includes.push_back(A->getValue(Args));
2159  }
2160
2161  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
2162         ie = Args.filtered_end(); it != ie; ++it) {
2163    const Arg *A = *it;
2164    Opts.ChainedIncludes.push_back(A->getValue(Args));
2165  }
2166
2167  // Include 'altivec.h' if -faltivec option present
2168  if (Args.hasArg(OPT_faltivec))
2169    Opts.Includes.push_back("altivec.h");
2170
2171  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
2172         ie = Args.filtered_end(); it != ie; ++it) {
2173    const Arg *A = *it;
2174    std::pair<StringRef,StringRef> Split =
2175      StringRef(A->getValue(Args)).split(';');
2176
2177    if (Split.second.empty()) {
2178      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2179      continue;
2180    }
2181
2182    Opts.addRemappedFile(Split.first, Split.second);
2183  }
2184
2185  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2186    StringRef Name = A->getValue(Args);
2187    unsigned Library = llvm::StringSwitch<unsigned>(Name)
2188      .Case("libc++", ARCXX_libcxx)
2189      .Case("libstdc++", ARCXX_libstdcxx)
2190      .Case("none", ARCXX_nolib)
2191      .Default(~0U);
2192    if (Library == ~0U)
2193      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2194    else
2195      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2196  }
2197}
2198
2199static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2200                                        ArgList &Args) {
2201  using namespace options;
2202  Opts.ShowCPP = !Args.hasArg(OPT_dM);
2203  Opts.ShowComments = Args.hasArg(OPT_C);
2204  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2205  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2206  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2207  Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2208}
2209
2210static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
2211  using namespace options;
2212  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2213  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
2214  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2215  Opts.Features = Args.getAllArgValues(OPT_target_feature);
2216  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2217  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2218
2219  // Use the default target triple if unspecified.
2220  if (Opts.Triple.empty())
2221    Opts.Triple = llvm::sys::getDefaultTargetTriple();
2222}
2223
2224//
2225
2226bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2227                                        const char *const *ArgBegin,
2228                                        const char *const *ArgEnd,
2229                                        DiagnosticsEngine &Diags) {
2230  bool Success = true;
2231
2232  // Parse the arguments.
2233  OwningPtr<OptTable> Opts(createDriverOptTable());
2234  unsigned MissingArgIndex, MissingArgCount;
2235  OwningPtr<InputArgList> Args(
2236    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
2237
2238  // Check for missing argument error.
2239  if (MissingArgCount) {
2240    Diags.Report(diag::err_drv_missing_argument)
2241      << Args->getArgString(MissingArgIndex) << MissingArgCount;
2242    Success = false;
2243  }
2244
2245  // Issue errors on unknown arguments.
2246  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
2247         ie = Args->filtered_end(); it != ie; ++it) {
2248    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
2249    Success = false;
2250  }
2251
2252  // Issue errors on arguments that are not valid for CC1.
2253  for (ArgList::iterator I = Args->begin(), E = Args->end();
2254       I != E; ++I) {
2255    if (!(*I)->getOption().isCC1Option()) {
2256      Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args);
2257      Success = false;
2258    }
2259  }
2260
2261  Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
2262  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
2263  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
2264  Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
2265            && Success;
2266  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
2267  // FIXME: We shouldn't have to pass the DashX option around here
2268  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2269  Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
2270            && Success;
2271  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2272  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2273    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2274    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2275      Res.getLangOpts()->ObjCExceptions = 1;
2276  }
2277  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2278  // PCH file and find the original header name. Remove the need to do that in
2279  // ParsePreprocessorArgs and remove the FileManager
2280  // parameters from the function and the "FileManager.h" #include.
2281  FileManager FileMgr(Res.getFileSystemOpts());
2282  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2283  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2284  ParseTargetArgs(Res.getTargetOpts(), *Args);
2285
2286  return Success;
2287}
2288
2289namespace {
2290
2291  class ModuleSignature {
2292    llvm::SmallVector<uint64_t, 16> Data;
2293    unsigned CurBit;
2294    uint64_t CurValue;
2295
2296  public:
2297    ModuleSignature() : CurBit(0), CurValue(0) { }
2298
2299    void add(uint64_t Value, unsigned Bits);
2300    void add(StringRef Value);
2301    void flush();
2302
2303    llvm::APInt getAsInteger() const;
2304  };
2305}
2306
2307void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2308  CurValue |= Value << CurBit;
2309  if (CurBit + NumBits < 64) {
2310    CurBit += NumBits;
2311    return;
2312  }
2313
2314  // Add the current word.
2315  Data.push_back(CurValue);
2316
2317  if (CurBit)
2318    CurValue = Value >> (64-CurBit);
2319  else
2320    CurValue = 0;
2321  CurBit = (CurBit+NumBits) & 63;
2322}
2323
2324void ModuleSignature::flush() {
2325  if (CurBit == 0)
2326    return;
2327
2328  Data.push_back(CurValue);
2329  CurBit = 0;
2330  CurValue = 0;
2331}
2332
2333void ModuleSignature::add(StringRef Value) {
2334  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2335    add(*I, 8);
2336}
2337
2338llvm::APInt ModuleSignature::getAsInteger() const {
2339  return llvm::APInt(Data.size() * 64, Data);
2340}
2341
2342std::string CompilerInvocation::getModuleHash() const {
2343  ModuleSignature Signature;
2344
2345  // Start the signature with the compiler version.
2346  // FIXME: The full version string can be quite long.  Omit it from the
2347  // module hash for now to avoid failures where the path name becomes too
2348  // long.  An MD5 or similar checksum would work well here.
2349  // Signature.add(getClangFullRepositoryVersion());
2350
2351  // Extend the signature with the language options
2352#define LANGOPT(Name, Bits, Default, Description) \
2353  Signature.add(LangOpts->Name, Bits);
2354#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2355  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2356#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2357#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2358#include "clang/Basic/LangOptions.def"
2359
2360  // Extend the signature with the target triple
2361  llvm::Triple T(TargetOpts.Triple);
2362  Signature.add((unsigned)T.getArch(), 5);
2363  Signature.add((unsigned)T.getVendor(), 4);
2364  Signature.add((unsigned)T.getOS(), 5);
2365  Signature.add((unsigned)T.getEnvironment(), 4);
2366
2367  // Extend the signature with preprocessor options.
2368  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2369  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2370
2371  // Hash the preprocessor defines.
2372  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2373  std::vector<StringRef> MacroDefs;
2374  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2375            I = getPreprocessorOpts().Macros.begin(),
2376         IEnd = getPreprocessorOpts().Macros.end();
2377       I != IEnd; ++I) {
2378    if (!I->second)
2379      MacroDefs.push_back(I->first);
2380  }
2381  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2382
2383  unsigned PPHashResult = 0;
2384  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2385    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2386  Signature.add(PPHashResult, 32);
2387
2388  // We've generated the signature. Treat it as one large APInt that we'll
2389  // encode in base-36 and return.
2390  Signature.flush();
2391  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2392}
2393