CompilerInvocation.cpp revision 91a230a15f2aca8f6a8b7fd492525ec372a98e6b 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
33static const char *getAnalysisName(Analyses Kind) {
34  switch (Kind) {
35  default:
36    llvm_unreachable("Unknown analysis kind!");
37#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
38  case NAME: return "-" CMDFLAG;
39#include "clang/Frontend/Analyses.def"
40  }
41}
42
43static const char *getAnalysisStoreName(AnalysisStores Kind) {
44  switch (Kind) {
45  default:
46    llvm_unreachable("Unknown analysis store!");
47#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
48  case NAME##Model: return CMDFLAG;
49#include "clang/Frontend/Analyses.def"
50  }
51}
52
53static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
54  switch (Kind) {
55  default:
56    llvm_unreachable("Unknown analysis constraints!");
57#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
58  case NAME##Model: return CMDFLAG;
59#include "clang/Frontend/Analyses.def"
60  }
61}
62
63static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
64  switch (Kind) {
65  default:
66    llvm_unreachable("Unknown analysis client!");
67#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
68  case PD_##NAME: return CMDFLAG;
69#include "clang/Frontend/Analyses.def"
70  }
71}
72
73//===----------------------------------------------------------------------===//
74// Serialization (to args)
75//===----------------------------------------------------------------------===//
76
77static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
78                               std::vector<std::string> &Res) {
79  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
80    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
81  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
82    Res.push_back("-analyzer-store");
83    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
84  }
85  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
86    Res.push_back("-analyzer-constraints");
87    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
88  }
89  if (Opts.AnalysisDiagOpt != PD_HTML) {
90    Res.push_back("-analyzer-output");
91    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
92  }
93  if (!Opts.AnalyzeSpecificFunction.empty()) {
94    Res.push_back("-analyze-function");
95    Res.push_back(Opts.AnalyzeSpecificFunction);
96  }
97  if (Opts.AnalyzeAll)
98    Res.push_back("-analyzer-opt-analyze-headers");
99  if (Opts.AnalyzerDisplayProgress)
100    Res.push_back("-analyzer-display-progress");
101  if (Opts.AnalyzeNestedBlocks)
102    Res.push_back("-analyzer-opt-analyze-nested-blocks");
103  if (Opts.AnalyzerStats)
104    Res.push_back("-analyzer-stats");
105  if (Opts.EagerlyAssume)
106    Res.push_back("-analyzer-eagerly-assume");
107  if (!Opts.PurgeDead)
108    Res.push_back("-analyzer-no-purge-dead");
109  if (Opts.TrimGraph)
110    Res.push_back("-trim-egraph");
111  if (Opts.VisualizeEGDot)
112    Res.push_back("-analyzer-viz-egraph-graphviz");
113  if (Opts.VisualizeEGDot)
114    Res.push_back("-analyzer-viz-egraph-ubigraph");
115  if (Opts.EnableExperimentalChecks)
116    Res.push_back("-analyzer-experimental-checks");
117  if (Opts.EnableExperimentalInternalChecks)
118    Res.push_back("-analyzer-experimental-internal-checks");
119  if (Opts.BufferOverflows)
120    Res.push_back("-analyzer-check-buffer-overflows");
121
122  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
123    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
124    if (opt.second)
125      Res.push_back("-analyzer-disable-checker");
126    else
127      Res.push_back("-analyzer-checker");
128    Res.push_back(opt.first);
129  }
130}
131
132static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
133                              std::vector<std::string> &Res) {
134  if (Opts.DebugInfo)
135    Res.push_back("-g");
136  if (Opts.DisableLLVMOpts)
137    Res.push_back("-disable-llvm-optzns");
138  if (Opts.DisableRedZone)
139    Res.push_back("-disable-red-zone");
140  if (!Opts.DwarfDebugFlags.empty()) {
141    Res.push_back("-dwarf-debug-flags");
142    Res.push_back(Opts.DwarfDebugFlags);
143  }
144  if (!Opts.MergeAllConstants)
145    Res.push_back("-fno-merge-all-constants");
146  if (Opts.NoCommon)
147    Res.push_back("-fno-common");
148  if (Opts.NoImplicitFloat)
149    Res.push_back("-no-implicit-float");
150  if (Opts.OmitLeafFramePointer)
151    Res.push_back("-momit-leaf-frame-pointer");
152  if (Opts.OptimizeSize) {
153    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
154    Res.push_back("-Os");
155  } else if (Opts.OptimizationLevel != 0)
156    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
157  if (!Opts.MainFileName.empty()) {
158    Res.push_back("-main-file-name");
159    Res.push_back(Opts.MainFileName);
160  }
161  // SimplifyLibCalls is only derived.
162  // TimePasses is only derived.
163  // UnitAtATime is unused.
164  // Inlining is only derived.
165
166  // UnrollLoops is derived, but also accepts an option, no
167  // harm in pushing it back here.
168  if (Opts.UnrollLoops)
169    Res.push_back("-funroll-loops");
170  if (Opts.DataSections)
171    Res.push_back("-fdata-sections");
172  if (Opts.FunctionSections)
173    Res.push_back("-ffunction-sections");
174  if (Opts.AsmVerbose)
175    Res.push_back("-masm-verbose");
176  if (!Opts.CodeModel.empty()) {
177    Res.push_back("-mcode-model");
178    Res.push_back(Opts.CodeModel);
179  }
180  if (!Opts.CXAAtExit)
181    Res.push_back("-fno-use-cxa-atexit");
182  if (Opts.CXXCtorDtorAliases)
183    Res.push_back("-mconstructor-aliases");
184  if (!Opts.DebugPass.empty()) {
185    Res.push_back("-mdebug-pass");
186    Res.push_back(Opts.DebugPass);
187  }
188  if (Opts.DisableFPElim)
189    Res.push_back("-mdisable-fp-elim");
190  if (!Opts.FloatABI.empty()) {
191    Res.push_back("-mfloat-abi");
192    Res.push_back(Opts.FloatABI);
193  }
194  if (!Opts.LimitFloatPrecision.empty()) {
195    Res.push_back("-mlimit-float-precision");
196    Res.push_back(Opts.LimitFloatPrecision);
197  }
198  if (Opts.NoZeroInitializedInBSS)
199    Res.push_back("-mno-zero-initialized-bss");
200  switch (Opts.getObjCDispatchMethod()) {
201  case CodeGenOptions::Legacy:
202    break;
203  case CodeGenOptions::Mixed:
204    Res.push_back("-fobjc-dispatch-method=mixed");
205    break;
206  case CodeGenOptions::NonLegacy:
207    Res.push_back("-fobjc-dispatch-method=non-legacy");
208    break;
209  }
210  if (Opts.NumRegisterParameters) {
211    Res.push_back("-mregparm");
212    Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
213  }
214  if (Opts.RelaxAll)
215    Res.push_back("-mrelax-all");
216  if (Opts.SoftFloat)
217    Res.push_back("-msoft-float");
218  if (Opts.UnwindTables)
219    Res.push_back("-munwind-tables");
220  if (Opts.RelocationModel != "pic") {
221    Res.push_back("-mrelocation-model");
222    Res.push_back(Opts.RelocationModel);
223  }
224  if (!Opts.VerifyModule)
225    Res.push_back("-disable-llvm-verifier");
226}
227
228static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
229                                       std::vector<std::string> &Res) {
230  if (Opts.IncludeSystemHeaders)
231    Res.push_back("-sys-header-deps");
232  if (Opts.ShowHeaderIncludes)
233    Res.push_back("-H");
234  if (!Opts.HeaderIncludeOutputFile.empty()) {
235    Res.push_back("-header-include-file");
236    Res.push_back(Opts.HeaderIncludeOutputFile);
237  }
238  if (Opts.UsePhonyTargets)
239    Res.push_back("-MP");
240  if (!Opts.OutputFile.empty()) {
241    Res.push_back("-dependency-file");
242    Res.push_back(Opts.OutputFile);
243  }
244  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
245    Res.push_back("-MT");
246    Res.push_back(Opts.Targets[i]);
247  }
248}
249
250static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
251                                 std::vector<std::string> &Res) {
252  if (Opts.IgnoreWarnings)
253    Res.push_back("-w");
254  if (Opts.NoRewriteMacros)
255    Res.push_back("-Wno-rewrite-macros");
256  if (Opts.Pedantic)
257    Res.push_back("-pedantic");
258  if (Opts.PedanticErrors)
259    Res.push_back("-pedantic-errors");
260  if (!Opts.ShowColumn)
261    Res.push_back("-fno-show-column");
262  if (!Opts.ShowLocation)
263    Res.push_back("-fno-show-source-location");
264  if (!Opts.ShowCarets)
265    Res.push_back("-fno-caret-diagnostics");
266  if (!Opts.ShowFixits)
267    Res.push_back("-fno-diagnostics-fixit-info");
268  if (Opts.ShowSourceRanges)
269    Res.push_back("-fdiagnostics-print-source-range-info");
270  if (Opts.ShowParseableFixits)
271    Res.push_back("-fdiagnostics-parseable-fixits");
272  if (Opts.ShowColors)
273    Res.push_back("-fcolor-diagnostics");
274  if (Opts.VerifyDiagnostics)
275    Res.push_back("-verify");
276  if (Opts.ShowOptionNames)
277    Res.push_back("-fdiagnostics-show-option");
278  if (Opts.ShowCategories == 1)
279    Res.push_back("-fdiagnostics-show-category=id");
280  else if (Opts.ShowCategories == 2)
281    Res.push_back("-fdiagnostics-show-category=name");
282  if (Opts.ErrorLimit) {
283    Res.push_back("-ferror-limit");
284    Res.push_back(llvm::utostr(Opts.ErrorLimit));
285  }
286  if (Opts.MacroBacktraceLimit
287                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
288    Res.push_back("-fmacro-backtrace-limit");
289    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
290  }
291  if (Opts.TemplateBacktraceLimit
292                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
293    Res.push_back("-ftemplate-backtrace-limit");
294    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
295  }
296
297  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
298    Res.push_back("-ftabstop");
299    Res.push_back(llvm::utostr(Opts.TabStop));
300  }
301  if (Opts.MessageLength) {
302    Res.push_back("-fmessage-length");
303    Res.push_back(llvm::utostr(Opts.MessageLength));
304  }
305  if (!Opts.DumpBuildInformation.empty()) {
306    Res.push_back("-dump-build-information");
307    Res.push_back(Opts.DumpBuildInformation);
308  }
309  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
310    Res.push_back("-W" + Opts.Warnings[i]);
311}
312
313static const char *getInputKindName(InputKind Kind) {
314  switch (Kind) {
315  case IK_None:              break;
316  case IK_AST:               return "ast";
317  case IK_Asm:               return "assembler-with-cpp";
318  case IK_C:                 return "c";
319  case IK_CXX:               return "c++";
320  case IK_LLVM_IR:           return "ir";
321  case IK_ObjC:              return "objective-c";
322  case IK_ObjCXX:            return "objective-c++";
323  case IK_OpenCL:            return "cl";
324  case IK_CUDA:              return "cuda";
325  case IK_PreprocessedC:     return "cpp-output";
326  case IK_PreprocessedCXX:   return "c++-cpp-output";
327  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
328  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
329  }
330
331  llvm_unreachable("Unexpected language kind!");
332  return 0;
333}
334
335static const char *getActionName(frontend::ActionKind Kind) {
336  switch (Kind) {
337  case frontend::PluginAction:
338    llvm_unreachable("Invalid kind!");
339
340  case frontend::ASTDump:                return "-ast-dump";
341  case frontend::ASTDumpXML:             return "-ast-dump-xml";
342  case frontend::ASTPrint:               return "-ast-print";
343  case frontend::ASTPrintXML:            return "-ast-print-xml";
344  case frontend::ASTView:                return "-ast-view";
345  case frontend::BoostCon:               return "-boostcon";
346  case frontend::CreateModule:           return "-create-module";
347  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
348  case frontend::DumpTokens:             return "-dump-tokens";
349  case frontend::EmitAssembly:           return "-S";
350  case frontend::EmitBC:                 return "-emit-llvm-bc";
351  case frontend::EmitHTML:               return "-emit-html";
352  case frontend::EmitLLVM:               return "-emit-llvm";
353  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
354  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
355  case frontend::EmitObj:                return "-emit-obj";
356  case frontend::FixIt:                  return "-fixit";
357  case frontend::GeneratePCH:            return "-emit-pch";
358  case frontend::GeneratePTH:            return "-emit-pth";
359  case frontend::InitOnly:               return "-init-only";
360  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
361  case frontend::PrintDeclContext:       return "-print-decl-contexts";
362  case frontend::PrintPreamble:          return "-print-preamble";
363  case frontend::PrintPreprocessedInput: return "-E";
364  case frontend::RewriteMacros:          return "-rewrite-macros";
365  case frontend::RewriteObjC:            return "-rewrite-objc";
366  case frontend::RewriteTest:            return "-rewrite-test";
367  case frontend::RunAnalysis:            return "-analyze";
368  case frontend::RunPreprocessorOnly:    return "-Eonly";
369  }
370
371  llvm_unreachable("Unexpected language kind!");
372  return 0;
373}
374
375static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
376                                 std::vector<std::string> &Res) {
377  if (!Opts.WorkingDir.empty()) {
378    Res.push_back("-working-directory");
379    Res.push_back(Opts.WorkingDir);
380  }
381}
382
383static void FrontendOptsToArgs(const FrontendOptions &Opts,
384                               std::vector<std::string> &Res) {
385  if (Opts.DisableFree)
386    Res.push_back("-disable-free");
387  if (Opts.RelocatablePCH)
388    Res.push_back("-relocatable-pch");
389  if (Opts.ChainedPCH)
390    Res.push_back("-chained-pch");
391  if (Opts.ShowHelp)
392    Res.push_back("-help");
393  if (Opts.ShowMacrosInCodeCompletion)
394    Res.push_back("-code-completion-macros");
395  if (Opts.ShowCodePatternsInCodeCompletion)
396    Res.push_back("-code-completion-patterns");
397  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
398    Res.push_back("-no-code-completion-globals");
399  if (Opts.ShowStats)
400    Res.push_back("-print-stats");
401  if (Opts.ShowTimers)
402    Res.push_back("-ftime-report");
403  if (Opts.ShowVersion)
404    Res.push_back("-version");
405  if (Opts.FixWhatYouCan)
406    Res.push_back("-fix-what-you-can");
407
408  bool NeedLang = false;
409  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
410    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
411        Opts.Inputs[i].first)
412      NeedLang = true;
413  if (NeedLang) {
414    Res.push_back("-x");
415    Res.push_back(getInputKindName(Opts.Inputs[0].first));
416  }
417  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
418    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
419           "Unable to represent this input vector!");
420    Res.push_back(Opts.Inputs[i].second);
421  }
422
423  if (!Opts.OutputFile.empty()) {
424    Res.push_back("-o");
425    Res.push_back(Opts.OutputFile);
426  }
427  if (!Opts.CodeCompletionAt.FileName.empty()) {
428    Res.push_back("-code-completion-at");
429    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
430                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
431                  llvm::utostr(Opts.CodeCompletionAt.Column));
432  }
433  if (Opts.ProgramAction != frontend::PluginAction)
434    Res.push_back(getActionName(Opts.ProgramAction));
435  if (!Opts.ActionName.empty()) {
436    Res.push_back("-plugin");
437    Res.push_back(Opts.ActionName);
438    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
439      Res.push_back("-plugin-arg-" + Opts.ActionName);
440      Res.push_back(Opts.PluginArgs[i]);
441    }
442  }
443  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
444    Res.push_back("-load");
445    Res.push_back(Opts.Plugins[i]);
446  }
447  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
448    Res.push_back("-add-plugin");
449    Res.push_back(Opts.AddPluginActions[i]);
450    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
451      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
452      Res.push_back(Opts.AddPluginArgs[i][ai]);
453    }
454  }
455  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
456    Res.push_back("-ast-merge");
457    Res.push_back(Opts.ASTMergeFiles[i]);
458  }
459  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
460    Res.push_back("-import-module");
461    Res.push_back(Opts.Modules[i]);
462  }
463  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
464    Res.push_back("-mllvm");
465    Res.push_back(Opts.LLVMArgs[i]);
466  }
467}
468
469static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
470                                   std::vector<std::string> &Res) {
471  if (Opts.Sysroot != "/") {
472    Res.push_back("-isysroot");
473    Res.push_back(Opts.Sysroot);
474  }
475
476  for (unsigned i = 0, e = Opts.CXXSystemIncludes.size(); i != e; ++i) {
477    Res.push_back("-cxx-system-include");
478    Res.push_back(Opts.CXXSystemIncludes[i]);
479  }
480
481  /// User specified include entries.
482  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
483    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
484    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
485      llvm::report_fatal_error("Invalid option set!");
486    if (E.IsUserSupplied) {
487      if (E.Group == frontend::After) {
488        Res.push_back("-idirafter");
489      } else if (E.Group == frontend::Quoted) {
490        Res.push_back("-iquote");
491      } else if (E.Group == frontend::System) {
492        Res.push_back("-isystem");
493      } else {
494        assert(E.Group == frontend::Angled && "Invalid group!");
495        Res.push_back(E.IsFramework ? "-F" : "-I");
496      }
497    } else {
498      if (E.Group != frontend::Angled && E.Group != frontend::System)
499        llvm::report_fatal_error("Invalid option set!");
500      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
501                    "-iwithprefix");
502    }
503    Res.push_back(E.Path);
504  }
505
506  if (!Opts.EnvIncPath.empty()) {
507    // FIXME: Provide an option for this, and move env detection to driver.
508    llvm::report_fatal_error("Not yet implemented!");
509  }
510  if (!Opts.CEnvIncPath.empty()) {
511    // FIXME: Provide an option for this, and move env detection to driver.
512    llvm::report_fatal_error("Not yet implemented!");
513  }
514  if (!Opts.ObjCEnvIncPath.empty()) {
515    // FIXME: Provide an option for this, and move env detection to driver.
516    llvm::report_fatal_error("Not yet implemented!");
517  }
518  if (!Opts.CXXEnvIncPath.empty()) {
519    // FIXME: Provide an option for this, and move env detection to driver.
520    llvm::report_fatal_error("Not yet implemented!");
521  }
522  if (!Opts.ObjCXXEnvIncPath.empty()) {
523    // FIXME: Provide an option for this, and move env detection to driver.
524    llvm::report_fatal_error("Not yet implemented!");
525  }
526  if (!Opts.ResourceDir.empty()) {
527    Res.push_back("-resource-dir");
528    Res.push_back(Opts.ResourceDir);
529  }
530  if (!Opts.UseStandardIncludes)
531    Res.push_back("-nostdinc");
532  if (!Opts.UseStandardCXXIncludes)
533    Res.push_back("-nostdinc++");
534  if (Opts.Verbose)
535    Res.push_back("-v");
536}
537
538static void LangOptsToArgs(const LangOptions &Opts,
539                           std::vector<std::string> &Res) {
540  LangOptions DefaultLangOpts;
541
542  // FIXME: Need to set -std to get all the implicit options.
543
544  // FIXME: We want to only pass options relative to the defaults, which
545  // requires constructing a target. :(
546  //
547  // It would be better to push the all target specific choices into the driver,
548  // so that everything below that was more uniform.
549
550  if (Opts.Trigraphs)
551    Res.push_back("-trigraphs");
552  // Implicit based on the input kind:
553  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
554  // Implicit based on the input language standard:
555  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
556  if (Opts.DollarIdents)
557    Res.push_back("-fdollars-in-identifiers");
558  if (Opts.GNUMode && !Opts.GNUKeywords)
559    Res.push_back("-fno-gnu-keywords");
560  if (!Opts.GNUMode && Opts.GNUKeywords)
561    Res.push_back("-fgnu-keywords");
562  if (Opts.Microsoft)
563    Res.push_back("-fms-extensions");
564  if (Opts.MSCVersion != 0)
565    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
566  if (Opts.Borland)
567    Res.push_back("-fborland-extensions");
568  if (Opts.ObjCNonFragileABI)
569    Res.push_back("-fobjc-nonfragile-abi");
570  if (Opts.ObjCNonFragileABI2)
571    Res.push_back("-fobjc-nonfragile-abi");
572  if (Opts.ObjCDefaultSynthProperties)
573    Res.push_back("-fobjc-default-synthesize-properties");
574  // NoInline is implicit.
575  if (!Opts.CXXOperatorNames)
576    Res.push_back("-fno-operator-names");
577  if (Opts.PascalStrings)
578    Res.push_back("-fpascal-strings");
579  if (Opts.CatchUndefined)
580    Res.push_back("-fcatch-undefined-behavior");
581  if (Opts.WritableStrings)
582    Res.push_back("-fwritable-strings");
583  if (Opts.ConstStrings)
584    Res.push_back("-Wwrite-strings");
585  if (!Opts.LaxVectorConversions)
586    Res.push_back("-fno-lax-vector-conversions");
587  if (Opts.AltiVec)
588    Res.push_back("-faltivec");
589  if (Opts.Exceptions)
590    Res.push_back("-fexceptions");
591  if (Opts.SjLjExceptions)
592    Res.push_back("-fsjlj-exceptions");
593  if (!Opts.RTTI)
594    Res.push_back("-fno-rtti");
595  if (Opts.MSBitfields)
596    Res.push_back("-mms-bitfields");
597  if (!Opts.NeXTRuntime)
598    Res.push_back("-fgnu-runtime");
599  if (Opts.Freestanding)
600    Res.push_back("-ffreestanding");
601  if (Opts.NoBuiltin)
602    Res.push_back("-fno-builtin");
603  if (!Opts.AssumeSaneOperatorNew)
604    Res.push_back("-fno-assume-sane-operator-new");
605  if (!Opts.ThreadsafeStatics)
606    Res.push_back("-fno-threadsafe-statics");
607  if (Opts.POSIXThreads)
608    Res.push_back("-pthread");
609  if (Opts.Blocks)
610    Res.push_back("-fblocks");
611  if (Opts.EmitAllDecls)
612    Res.push_back("-femit-all-decls");
613  if (Opts.MathErrno)
614    Res.push_back("-fmath-errno");
615  switch (Opts.getSignedOverflowBehavior()) {
616  case LangOptions::SOB_Undefined: break;
617  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
618  case LangOptions::SOB_Trapping:
619    Res.push_back("-ftrapv"); break;
620    if (!Opts.OverflowHandler.empty()) {
621      Res.push_back("-ftrapv-handler");
622      Res.push_back(Opts.OverflowHandler);
623    }
624  }
625  if (Opts.HeinousExtensions)
626    Res.push_back("-fheinous-gnu-extensions");
627  // Optimize is implicit.
628  // OptimizeSize is implicit.
629  if (Opts.Static)
630    Res.push_back("-static-define");
631  if (Opts.DumpRecordLayouts)
632    Res.push_back("-fdump-record-layouts");
633  if (Opts.DumpVTableLayouts)
634    Res.push_back("-fdump-vtable-layouts");
635  if (Opts.NoBitFieldTypeAlign)
636    Res.push_back("-fno-bitfield-type-alignment");
637  if (Opts.SjLjExceptions)
638    Res.push_back("-fsjlj-exceptions");
639  if (Opts.PICLevel) {
640    Res.push_back("-pic-level");
641    Res.push_back(llvm::utostr(Opts.PICLevel));
642  }
643  if (Opts.ObjCGCBitmapPrint)
644    Res.push_back("-print-ivar-layout");
645  if (Opts.NoConstantCFStrings)
646    Res.push_back("-fno-constant-cfstrings");
647  if (!Opts.AccessControl)
648    Res.push_back("-fno-access-control");
649  if (!Opts.CharIsSigned)
650    Res.push_back("-fno-signed-char");
651  if (Opts.ShortWChar)
652    Res.push_back("-fshort-wchar");
653  if (!Opts.ElideConstructors)
654    Res.push_back("-fno-elide-constructors");
655  if (Opts.getGCMode() != LangOptions::NonGC) {
656    if (Opts.getGCMode() == LangOptions::HybridGC) {
657      Res.push_back("-fobjc-gc");
658    } else {
659      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
660      Res.push_back("-fobjc-gc-only");
661    }
662  }
663  if (Opts.AppleKext)
664    Res.push_back("-fapple-kext");
665
666  if (Opts.getVisibilityMode() != DefaultVisibility) {
667    Res.push_back("-fvisibility");
668    if (Opts.getVisibilityMode() == HiddenVisibility) {
669      Res.push_back("hidden");
670    } else {
671      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
672             "Invalid visibility!");
673      Res.push_back("protected");
674    }
675  }
676  if (Opts.InlineVisibilityHidden)
677    Res.push_back("-fvisibility-inlines-hidden");
678
679  if (Opts.getStackProtectorMode() != 0) {
680    Res.push_back("-stack-protector");
681    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
682  }
683  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
684    Res.push_back("-ftemplate-depth");
685    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
686  }
687  if (!Opts.ObjCConstantStringClass.empty()) {
688    Res.push_back("-fconstant-string-class");
689    Res.push_back(Opts.ObjCConstantStringClass);
690  }
691}
692
693static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
694                                   std::vector<std::string> &Res) {
695  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
696    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
697                  Opts.Macros[i].first);
698  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
699    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
700    Res.push_back("-include");
701    Res.push_back(Opts.Includes[i]);
702  }
703  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
704    Res.push_back("-imacros");
705    Res.push_back(Opts.MacroIncludes[i]);
706  }
707  if (!Opts.UsePredefines)
708    Res.push_back("-undef");
709  if (Opts.DetailedRecord)
710    Res.push_back("-detailed-preprocessing-record");
711  if (!Opts.ImplicitPCHInclude.empty()) {
712    Res.push_back("-include-pch");
713    Res.push_back(Opts.ImplicitPCHInclude);
714  }
715  if (!Opts.ImplicitPTHInclude.empty()) {
716    Res.push_back("-include-pth");
717    Res.push_back(Opts.ImplicitPTHInclude);
718  }
719  if (!Opts.TokenCache.empty()) {
720    if (Opts.ImplicitPTHInclude.empty()) {
721      Res.push_back("-token-cache");
722      Res.push_back(Opts.TokenCache);
723    } else
724      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
725             "Unsupported option combination!");
726  }
727  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
728    Res.push_back("-remap-file");
729    Res.push_back(Opts.RemappedFiles[i].first + ";" +
730                  Opts.RemappedFiles[i].second);
731  }
732}
733
734static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
735                                         std::vector<std::string> &Res) {
736  if (!Opts.ShowCPP && !Opts.ShowMacros)
737    llvm::report_fatal_error("Invalid option combination!");
738
739  if (Opts.ShowCPP && Opts.ShowMacros)
740    Res.push_back("-dD");
741  else if (!Opts.ShowCPP && Opts.ShowMacros)
742    Res.push_back("-dM");
743
744  if (!Opts.ShowLineMarkers)
745    Res.push_back("-P");
746  if (Opts.ShowComments)
747    Res.push_back("-C");
748  if (Opts.ShowMacroComments)
749    Res.push_back("-CC");
750}
751
752static void TargetOptsToArgs(const TargetOptions &Opts,
753                             std::vector<std::string> &Res) {
754  Res.push_back("-triple");
755  Res.push_back(Opts.Triple);
756  if (!Opts.CPU.empty()) {
757    Res.push_back("-target-cpu");
758    Res.push_back(Opts.CPU);
759  }
760  if (!Opts.ABI.empty()) {
761    Res.push_back("-target-abi");
762    Res.push_back(Opts.ABI);
763  }
764  if (!Opts.LinkerVersion.empty()) {
765    Res.push_back("-target-linker-version");
766    Res.push_back(Opts.LinkerVersion);
767  }
768  if (!Opts.CXXABI.empty()) {
769    Res.push_back("-cxx-abi");
770    Res.push_back(Opts.CXXABI);
771  }
772  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
773    Res.push_back("-target-feature");
774    Res.push_back(Opts.Features[i]);
775  }
776}
777
778void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
779  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
780  CodeGenOptsToArgs(getCodeGenOpts(), Res);
781  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
782  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
783  FileSystemOptsToArgs(getFileSystemOpts(), Res);
784  FrontendOptsToArgs(getFrontendOpts(), Res);
785  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
786  LangOptsToArgs(getLangOpts(), Res);
787  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
788  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
789  TargetOptsToArgs(getTargetOpts(), Res);
790}
791
792//===----------------------------------------------------------------------===//
793// Deserialization (to args)
794//===----------------------------------------------------------------------===//
795
796using namespace clang::driver;
797using namespace clang::driver::cc1options;
798
799//
800
801static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
802                                     Diagnostic &Diags) {
803  unsigned DefaultOpt = 0;
804  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
805    DefaultOpt = 2;
806  // -Os implies -O2
807  return Args.hasArg(OPT_Os) ? 2 :
808    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
809}
810
811static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
812                              Diagnostic &Diags) {
813  using namespace cc1options;
814
815  Opts.AnalysisList.clear();
816#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
817  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
818#include "clang/Frontend/Analyses.def"
819
820  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
821    llvm::StringRef Name = A->getValue(Args);
822    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
823#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
824      .Case(CMDFLAG, NAME##Model)
825#include "clang/Frontend/Analyses.def"
826      .Default(NumStores);
827    // FIXME: Error handling.
828    if (Value == NumStores)
829      Diags.Report(diag::err_drv_invalid_value)
830        << A->getAsString(Args) << Name;
831    else
832      Opts.AnalysisStoreOpt = Value;
833  }
834
835  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
836    llvm::StringRef Name = A->getValue(Args);
837    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
838#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
839      .Case(CMDFLAG, NAME##Model)
840#include "clang/Frontend/Analyses.def"
841      .Default(NumConstraints);
842    // FIXME: Error handling.
843    if (Value == NumConstraints)
844      Diags.Report(diag::err_drv_invalid_value)
845        << A->getAsString(Args) << Name;
846    else
847      Opts.AnalysisConstraintsOpt = Value;
848  }
849
850  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
851    llvm::StringRef Name = A->getValue(Args);
852    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
853#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
854      .Case(CMDFLAG, PD_##NAME)
855#include "clang/Frontend/Analyses.def"
856      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
857    // FIXME: Error handling.
858    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
859      Diags.Report(diag::err_drv_invalid_value)
860        << A->getAsString(Args) << Name;
861    else
862      Opts.AnalysisDiagOpt = Value;
863  }
864
865  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
866  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
867  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
868  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
869  Opts.AnalyzeNestedBlocks =
870    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
871  Opts.AnalyzerStats = Args.hasArg(OPT_analysis_AnalyzerStats);
872  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
873  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
874  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
875  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
876  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
877  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
878  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
879  Opts.EnableExperimentalInternalChecks =
880    Args.hasArg(OPT_analyzer_experimental_internal_checks);
881  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
882  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
883  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
884  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
885  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
886  Opts.BufferOverflows = Args.hasArg(OPT_analysis_WarnBufferOverflows);
887
888  Opts.CheckersControlList.clear();
889  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
890                                             OPT_analyzer_disable_checker),
891         ie = Args.filtered_end(); it != ie; ++it) {
892    const Arg *A = *it;
893    A->claim();
894    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
895    Opts.CheckersControlList.push_back(std::make_pair(A->getValue(Args),
896                                                      enable));
897  }
898}
899
900static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
901                             Diagnostic &Diags) {
902  using namespace cc1options;
903
904  Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
905  if (Opts.OptimizationLevel > 3) {
906    Diags.Report(diag::err_drv_invalid_value)
907      << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
908    Opts.OptimizationLevel = 3;
909  }
910
911  // We must always run at least the always inlining pass.
912  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
913    : CodeGenOptions::OnlyAlwaysInlining;
914
915  Opts.DebugInfo = Args.hasArg(OPT_g);
916  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
917  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
918  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
919  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
920  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
921  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
922  Opts.NoCommon = Args.hasArg(OPT_fno_common);
923  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
924  Opts.OptimizeSize = Args.hasArg(OPT_Os);
925  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
926                            Args.hasArg(OPT_ffreestanding));
927  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
928                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
929
930  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
931  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
932  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
933  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
934  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
935  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
936  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
937  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
938  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
939  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
940  Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
941                                          Args.hasArg(OPT_cl_fast_relaxed_math);
942  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
943  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
944  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
945  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
946  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
947  Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
948                      Args.hasArg(OPT_cl_fast_relaxed_math);
949  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
950  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
951
952  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
953  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
954
955  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
956  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
957
958  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
959  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
960
961  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
962    llvm::StringRef Name = A->getValue(Args);
963    unsigned Method = llvm::StringSwitch<unsigned>(Name)
964      .Case("legacy", CodeGenOptions::Legacy)
965      .Case("non-legacy", CodeGenOptions::NonLegacy)
966      .Case("mixed", CodeGenOptions::Mixed)
967      .Default(~0U);
968    if (Method == ~0U)
969      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
970    else
971      Opts.ObjCDispatchMethod = Method;
972  }
973}
974
975static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
976                                      ArgList &Args) {
977  using namespace cc1options;
978  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
979  Opts.Targets = Args.getAllArgValues(OPT_MT);
980  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
981  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
982  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
983  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
984}
985
986static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
987                                Diagnostic &Diags) {
988  using namespace cc1options;
989  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
990  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
991  Opts.Pedantic = Args.hasArg(OPT_pedantic);
992  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
993  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
994  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
995  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
996  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
997  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
998  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
999
1000  llvm::StringRef ShowOverloads =
1001    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1002  if (ShowOverloads == "best")
1003    Opts.ShowOverloads = Diagnostic::Ovl_Best;
1004  else if (ShowOverloads == "all")
1005    Opts.ShowOverloads = Diagnostic::Ovl_All;
1006  else
1007    Diags.Report(diag::err_drv_invalid_value)
1008      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1009      << ShowOverloads;
1010
1011  llvm::StringRef ShowCategory =
1012    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1013  if (ShowCategory == "none")
1014    Opts.ShowCategories = 0;
1015  else if (ShowCategory == "id")
1016    Opts.ShowCategories = 1;
1017  else if (ShowCategory == "name")
1018    Opts.ShowCategories = 2;
1019  else
1020    Diags.Report(diag::err_drv_invalid_value)
1021      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1022      << ShowCategory;
1023
1024  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1025  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1026  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1027  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1028  Opts.MacroBacktraceLimit
1029    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1030                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1031  Opts.TemplateBacktraceLimit
1032    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1033                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1034                         Diags);
1035  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1036                                    DiagnosticOptions::DefaultTabStop, Diags);
1037  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1038    Diags.Report(diag::warn_ignoring_ftabstop_value)
1039      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1040    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1041  }
1042  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1043  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1044  Opts.Warnings = Args.getAllArgValues(OPT_W);
1045}
1046
1047static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1048  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1049}
1050
1051static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1052                                   Diagnostic &Diags) {
1053  using namespace cc1options;
1054  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1055  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1056    switch (A->getOption().getID()) {
1057    default:
1058      assert(0 && "Invalid option in group!");
1059    case OPT_ast_dump:
1060      Opts.ProgramAction = frontend::ASTDump; break;
1061    case OPT_ast_dump_xml:
1062      Opts.ProgramAction = frontend::ASTDumpXML; break;
1063    case OPT_ast_print:
1064      Opts.ProgramAction = frontend::ASTPrint; break;
1065    case OPT_ast_print_xml:
1066      Opts.ProgramAction = frontend::ASTPrintXML; break;
1067    case OPT_ast_view:
1068      Opts.ProgramAction = frontend::ASTView; break;
1069    case OPT_boostcon:
1070      Opts.ProgramAction = frontend::BoostCon; break;
1071    case OPT_dump_raw_tokens:
1072      Opts.ProgramAction = frontend::DumpRawTokens; break;
1073    case OPT_dump_tokens:
1074      Opts.ProgramAction = frontend::DumpTokens; break;
1075    case OPT_S:
1076      Opts.ProgramAction = frontend::EmitAssembly; break;
1077    case OPT_emit_llvm_bc:
1078      Opts.ProgramAction = frontend::EmitBC; break;
1079    case OPT_emit_html:
1080      Opts.ProgramAction = frontend::EmitHTML; break;
1081    case OPT_emit_llvm:
1082      Opts.ProgramAction = frontend::EmitLLVM; break;
1083    case OPT_emit_llvm_only:
1084      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1085    case OPT_emit_codegen_only:
1086      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1087    case OPT_emit_obj:
1088      Opts.ProgramAction = frontend::EmitObj; break;
1089    case OPT_fixit_EQ:
1090      Opts.FixItSuffix = A->getValue(Args);
1091      // fall-through!
1092    case OPT_fixit:
1093      Opts.ProgramAction = frontend::FixIt; break;
1094    case OPT_emit_pch:
1095      Opts.ProgramAction = frontend::GeneratePCH; break;
1096    case OPT_emit_pth:
1097      Opts.ProgramAction = frontend::GeneratePTH; break;
1098    case OPT_init_only:
1099      Opts.ProgramAction = frontend::InitOnly; break;
1100    case OPT_fsyntax_only:
1101      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1102    case OPT_print_decl_contexts:
1103      Opts.ProgramAction = frontend::PrintDeclContext; break;
1104    case OPT_print_preamble:
1105      Opts.ProgramAction = frontend::PrintPreamble; break;
1106    case OPT_E:
1107      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1108    case OPT_rewrite_macros:
1109      Opts.ProgramAction = frontend::RewriteMacros; break;
1110    case OPT_rewrite_objc:
1111      Opts.ProgramAction = frontend::RewriteObjC; break;
1112    case OPT_rewrite_test:
1113      Opts.ProgramAction = frontend::RewriteTest; break;
1114    case OPT_analyze:
1115      Opts.ProgramAction = frontend::RunAnalysis; break;
1116    case OPT_Eonly:
1117      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1118    case OPT_create_module:
1119      Opts.ProgramAction = frontend::CreateModule; break;
1120    }
1121  }
1122
1123  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1124    Opts.Plugins.push_back(A->getValue(Args,0));
1125    Opts.ProgramAction = frontend::PluginAction;
1126    Opts.ActionName = A->getValue(Args);
1127
1128    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1129           end = Args.filtered_end(); it != end; ++it) {
1130      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1131        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1132    }
1133  }
1134
1135  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1136  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1137  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1138    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1139           end = Args.filtered_end(); it != end; ++it) {
1140      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1141        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1142    }
1143  }
1144
1145  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1146    Opts.CodeCompletionAt =
1147      ParsedSourceLocation::FromString(A->getValue(Args));
1148    if (Opts.CodeCompletionAt.FileName.empty())
1149      Diags.Report(diag::err_drv_invalid_value)
1150        << A->getAsString(Args) << A->getValue(Args);
1151  }
1152  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1153
1154  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1155  Opts.Plugins = Args.getAllArgValues(OPT_load);
1156  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1157  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1158  Opts.ShowHelp = Args.hasArg(OPT_help);
1159  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1160  Opts.ShowCodePatternsInCodeCompletion
1161    = Args.hasArg(OPT_code_completion_patterns);
1162  Opts.ShowGlobalSymbolsInCodeCompletion
1163    = !Args.hasArg(OPT_no_code_completion_globals);
1164  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1165  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1166  Opts.ShowVersion = Args.hasArg(OPT_version);
1167  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1168  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1169  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1170  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1171
1172  InputKind DashX = IK_None;
1173  if (const Arg *A = Args.getLastArg(OPT_x)) {
1174    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1175      .Case("c", IK_C)
1176      .Case("cl", IK_OpenCL)
1177      .Case("c", IK_C)
1178      .Case("cl", IK_OpenCL)
1179      .Case("cuda", IK_CUDA)
1180      .Case("c++", IK_CXX)
1181      .Case("objective-c", IK_ObjC)
1182      .Case("objective-c++", IK_ObjCXX)
1183      .Case("cpp-output", IK_PreprocessedC)
1184      .Case("assembler-with-cpp", IK_Asm)
1185      .Case("c++-cpp-output", IK_PreprocessedCXX)
1186      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1187      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1188      .Case("c-header", IK_C)
1189      .Case("objective-c-header", IK_ObjC)
1190      .Case("c++-header", IK_CXX)
1191      .Case("objective-c++-header", IK_ObjCXX)
1192      .Case("ast", IK_AST)
1193      .Case("ir", IK_LLVM_IR)
1194      .Default(IK_None);
1195    if (DashX == IK_None)
1196      Diags.Report(diag::err_drv_invalid_value)
1197        << A->getAsString(Args) << A->getValue(Args);
1198  }
1199
1200  // '-' is the default input if none is given.
1201  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1202  Opts.Inputs.clear();
1203  if (Inputs.empty())
1204    Inputs.push_back("-");
1205  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1206    InputKind IK = DashX;
1207    if (IK == IK_None) {
1208      IK = FrontendOptions::getInputKindForExtension(
1209        llvm::StringRef(Inputs[i]).rsplit('.').second);
1210      // FIXME: Remove this hack.
1211      if (i == 0)
1212        DashX = IK;
1213    }
1214    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1215  }
1216
1217  return DashX;
1218}
1219
1220std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1221                                                 void *MainAddr) {
1222  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1223
1224  if (!P.isEmpty()) {
1225    P.eraseComponent();  // Remove /clang from foo/bin/clang
1226    P.eraseComponent();  // Remove /bin   from foo/bin
1227
1228    // Get foo/lib/clang/<version>/include
1229    P.appendComponent("lib");
1230    P.appendComponent("clang");
1231    P.appendComponent(CLANG_VERSION_STRING);
1232  }
1233
1234  return P.str();
1235}
1236
1237static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1238  using namespace cc1options;
1239  Opts.CXXSystemIncludes = Args.getAllArgValues(OPT_cxx_system_include);
1240  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1241  Opts.Verbose = Args.hasArg(OPT_v);
1242  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1243  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1244  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1245  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1246
1247  // Add -I... and -F... options in order.
1248  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1249         ie = Args.filtered_end(); it != ie; ++it)
1250    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1251                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1252
1253  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1254  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1255  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1256                                             OPT_iwithprefixbefore),
1257         ie = Args.filtered_end(); it != ie; ++it) {
1258    const Arg *A = *it;
1259    if (A->getOption().matches(OPT_iprefix))
1260      Prefix = A->getValue(Args);
1261    else if (A->getOption().matches(OPT_iwithprefix))
1262      Opts.AddPath(Prefix.str() + A->getValue(Args),
1263                   frontend::System, false, false, true);
1264    else
1265      Opts.AddPath(Prefix.str() + A->getValue(Args),
1266                   frontend::Angled, false, false, true);
1267  }
1268
1269  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1270         ie = Args.filtered_end(); it != ie; ++it)
1271    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1272  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1273         ie = Args.filtered_end(); it != ie; ++it)
1274    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1275  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1276         ie = Args.filtered_end(); it != ie; ++it)
1277    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1278                 (*it)->getOption().matches(OPT_iwithsysroot));
1279
1280  // FIXME: Need options for the various environment variables!
1281}
1282
1283void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1284                                         LangStandard::Kind LangStd) {
1285  // Set some properties which depend soley on the input kind; it would be nice
1286  // to move these to the language standard, and have the driver resolve the
1287  // input kind + language standard.
1288  if (IK == IK_Asm) {
1289    Opts.AsmPreprocessor = 1;
1290  } else if (IK == IK_ObjC ||
1291             IK == IK_ObjCXX ||
1292             IK == IK_PreprocessedObjC ||
1293             IK == IK_PreprocessedObjCXX) {
1294    Opts.ObjC1 = Opts.ObjC2 = 1;
1295  }
1296
1297  if (LangStd == LangStandard::lang_unspecified) {
1298    // Based on the base language, pick one.
1299    switch (IK) {
1300    case IK_None:
1301    case IK_AST:
1302    case IK_LLVM_IR:
1303      assert(0 && "Invalid input kind!");
1304    case IK_OpenCL:
1305      LangStd = LangStandard::lang_opencl;
1306      break;
1307    case IK_CUDA:
1308      LangStd = LangStandard::lang_cuda;
1309      break;
1310    case IK_Asm:
1311    case IK_C:
1312    case IK_PreprocessedC:
1313    case IK_ObjC:
1314    case IK_PreprocessedObjC:
1315      LangStd = LangStandard::lang_gnu99;
1316      break;
1317    case IK_CXX:
1318    case IK_PreprocessedCXX:
1319    case IK_ObjCXX:
1320    case IK_PreprocessedObjCXX:
1321      LangStd = LangStandard::lang_gnucxx98;
1322      break;
1323    }
1324  }
1325
1326  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1327  Opts.BCPLComment = Std.hasBCPLComments();
1328  Opts.C99 = Std.isC99();
1329  Opts.CPlusPlus = Std.isCPlusPlus();
1330  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1331  Opts.Digraphs = Std.hasDigraphs();
1332  Opts.GNUMode = Std.isGNUMode();
1333  Opts.GNUInline = !Std.isC99();
1334  Opts.HexFloats = Std.hasHexFloats();
1335  Opts.ImplicitInt = Std.hasImplicitInt();
1336
1337  // OpenCL has some additional defaults.
1338  if (LangStd == LangStandard::lang_opencl) {
1339    Opts.OpenCL = 1;
1340    Opts.AltiVec = 1;
1341    Opts.CXXOperatorNames = 1;
1342    Opts.LaxVectorConversions = 1;
1343    Opts.DefaultFPContract = 1;
1344  }
1345
1346  if (LangStd == LangStandard::lang_cuda)
1347    Opts.CUDA = 1;
1348
1349  // OpenCL and C++ both have bool, true, false keywords.
1350  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1351
1352  Opts.GNUKeywords = Opts.GNUMode;
1353  Opts.CXXOperatorNames = Opts.CPlusPlus;
1354
1355  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1356  // is specified, or -std is set to a conforming mode.
1357  Opts.Trigraphs = !Opts.GNUMode;
1358
1359  Opts.DollarIdents = !Opts.AsmPreprocessor;
1360}
1361
1362static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1363                          Diagnostic &Diags) {
1364  // FIXME: Cleanup per-file based stuff.
1365  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1366  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1367    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1368#define LANGSTANDARD(id, name, desc, features) \
1369      .Case(name, LangStandard::lang_##id)
1370#include "clang/Frontend/LangStandards.def"
1371      .Default(LangStandard::lang_unspecified);
1372    if (LangStd == LangStandard::lang_unspecified)
1373      Diags.Report(diag::err_drv_invalid_value)
1374        << A->getAsString(Args) << A->getValue(Args);
1375  }
1376
1377  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1378    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1379      Diags.Report(diag::err_drv_invalid_value)
1380        << A->getAsString(Args) << A->getValue(Args);
1381    }
1382  }
1383
1384  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1385
1386  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1387  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1388  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1389  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1390  // name, as it doesn't seem a useful distinction.
1391  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1392                                  Opts.GNUKeywords);
1393
1394  if (Args.hasArg(OPT_fno_operator_names))
1395    Opts.CXXOperatorNames = 0;
1396
1397  if (Args.hasArg(OPT_fobjc_gc_only))
1398    Opts.setGCMode(LangOptions::GCOnly);
1399  else if (Args.hasArg(OPT_fobjc_gc))
1400    Opts.setGCMode(LangOptions::HybridGC);
1401
1402  if (Args.hasArg(OPT_fapple_kext)) {
1403    if (!Opts.CPlusPlus)
1404      Diags.Report(diag::warn_c_kext);
1405    else
1406      Opts.AppleKext = 1;
1407  }
1408
1409  if (Args.hasArg(OPT_print_ivar_layout))
1410    Opts.ObjCGCBitmapPrint = 1;
1411  if (Args.hasArg(OPT_fno_constant_cfstrings))
1412    Opts.NoConstantCFStrings = 1;
1413
1414  if (Args.hasArg(OPT_faltivec))
1415    Opts.AltiVec = 1;
1416
1417  if (Args.hasArg(OPT_pthread))
1418    Opts.POSIXThreads = 1;
1419
1420  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1421  if (Vis == "default")
1422    Opts.setVisibilityMode(DefaultVisibility);
1423  else if (Vis == "hidden")
1424    Opts.setVisibilityMode(HiddenVisibility);
1425  else if (Vis == "protected")
1426    Opts.setVisibilityMode(ProtectedVisibility);
1427  else
1428    Diags.Report(diag::err_drv_invalid_value)
1429      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1430
1431  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1432    Opts.InlineVisibilityHidden = 1;
1433
1434  if (Args.hasArg(OPT_ftrapv)) {
1435    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1436    // Set the handler, if one is specified.
1437    Opts.OverflowHandler =
1438        Args.getLastArgValue(OPT_ftrapv_handler);
1439  }
1440  else if (Args.hasArg(OPT_fwrapv))
1441    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1442
1443  if (Args.hasArg(OPT_trigraphs))
1444    Opts.Trigraphs = 1;
1445
1446  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1447                                   OPT_fno_dollars_in_identifiers,
1448                                   Opts.DollarIdents);
1449  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1450  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1451  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1452  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1453  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1454  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1455  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1456    Opts.LaxVectorConversions = 0;
1457  if (Args.hasArg(OPT_fno_threadsafe_statics))
1458    Opts.ThreadsafeStatics = 0;
1459  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1460  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1461  Opts.Blocks = Args.hasArg(OPT_fblocks);
1462  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1463  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1464  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1465  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1466  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1467  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1468  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1469  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1470  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1471  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1472  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1473                                               Diags);
1474  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1475                                                    0, Diags);
1476  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1477  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1478  Opts.ObjCConstantStringClass =
1479    Args.getLastArgValue(OPT_fconstant_string_class);
1480  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1481  if (Opts.ObjCNonFragileABI)
1482    Opts.ObjCNonFragileABI2 = true;
1483  Opts.ObjCDefaultSynthProperties =
1484    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1485  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1486  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1487  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1488  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1489  Opts.Static = Args.hasArg(OPT_static_define);
1490  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1491  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1492  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1493  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1494  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1495  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1496  Opts.OptimizeSize = 0;
1497
1498  // FIXME: Eliminate this dependency.
1499  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1500  Opts.Optimize = Opt != 0;
1501
1502  // This is the __NO_INLINE__ define, which just depends on things like the
1503  // optimization level and -fno-inline, not actually whether the backend has
1504  // inlining enabled.
1505  //
1506  // FIXME: This is affected by other options (-fno-inline).
1507  Opts.NoInline = !Opt;
1508
1509  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1510  switch (SSP) {
1511  default:
1512    Diags.Report(diag::err_drv_invalid_value)
1513      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1514    break;
1515  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1516  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1517  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1518  }
1519}
1520
1521static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1522                                  FileManager &FileMgr,
1523                                  Diagnostic &Diags) {
1524  using namespace cc1options;
1525  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1526  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1527  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1528      Opts.TokenCache = A->getValue(Args);
1529  else
1530    Opts.TokenCache = Opts.ImplicitPTHInclude;
1531  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1532  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1533  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1534
1535  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1536  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1537         ie = Args.filtered_end(); it != ie; ++it) {
1538    const Arg *A = *it;
1539    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1540  }
1541
1542  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1543    llvm::StringRef Value(A->getValue(Args));
1544    size_t Comma = Value.find(',');
1545    unsigned Bytes = 0;
1546    unsigned EndOfLine = 0;
1547
1548    if (Comma == llvm::StringRef::npos ||
1549        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1550        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1551      Diags.Report(diag::err_drv_preamble_format);
1552    else {
1553      Opts.PrecompiledPreambleBytes.first = Bytes;
1554      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1555    }
1556  }
1557
1558  // Add macros from the command line.
1559  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1560         ie = Args.filtered_end(); it != ie; ++it) {
1561    if ((*it)->getOption().matches(OPT_D))
1562      Opts.addMacroDef((*it)->getValue(Args));
1563    else
1564      Opts.addMacroUndef((*it)->getValue(Args));
1565  }
1566
1567  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1568
1569  // Add the ordered list of -includes.
1570  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1571                                             OPT_include_pth),
1572         ie = Args.filtered_end(); it != ie; ++it) {
1573    const Arg *A = *it;
1574    // PCH is handled specially, we need to extra the original include path.
1575    if (A->getOption().matches(OPT_include_pch)) {
1576      std::string OriginalFile =
1577        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1578      if (OriginalFile.empty())
1579        continue;
1580
1581      Opts.Includes.push_back(OriginalFile);
1582    } else
1583      Opts.Includes.push_back(A->getValue(Args));
1584  }
1585
1586  // Include 'altivec.h' if -faltivec option present
1587  if (Args.hasArg(OPT_faltivec))
1588    Opts.Includes.push_back("altivec.h");
1589
1590  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1591         ie = Args.filtered_end(); it != ie; ++it) {
1592    const Arg *A = *it;
1593    std::pair<llvm::StringRef,llvm::StringRef> Split =
1594      llvm::StringRef(A->getValue(Args)).split(';');
1595
1596    if (Split.second.empty()) {
1597      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1598      continue;
1599    }
1600
1601    Opts.addRemappedFile(Split.first, Split.second);
1602  }
1603}
1604
1605static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1606                                        ArgList &Args) {
1607  using namespace cc1options;
1608  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1609  Opts.ShowComments = Args.hasArg(OPT_C);
1610  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1611  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1612  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1613}
1614
1615static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1616  using namespace cc1options;
1617  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1618  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1619  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1620  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1621  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1622  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1623
1624  // Use the host triple if unspecified.
1625  if (Opts.Triple.empty())
1626    Opts.Triple = llvm::sys::getHostTriple();
1627}
1628
1629//
1630
1631void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1632                                        const char *const *ArgBegin,
1633                                        const char *const *ArgEnd,
1634                                        Diagnostic &Diags) {
1635  // Parse the arguments.
1636  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1637  unsigned MissingArgIndex, MissingArgCount;
1638  llvm::OwningPtr<InputArgList> Args(
1639    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1640
1641  // Check for missing argument error.
1642  if (MissingArgCount)
1643    Diags.Report(diag::err_drv_missing_argument)
1644      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1645
1646  // Issue errors on unknown arguments.
1647  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1648         ie = Args->filtered_end(); it != ie; ++it)
1649    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1650
1651  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1652  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1653  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1654  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1655  // FIXME: We shouldn't have to pass the DashX option around here
1656  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1657  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
1658  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1659  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1660    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1661  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1662  // PCH file and find the original header name. Remove the need to do that in
1663  // ParsePreprocessorArgs and remove the FileManager
1664  // parameters from the function and the "FileManager.h" #include.
1665  FileManager FileMgr(Res.getFileSystemOpts());
1666  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1667  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1668  ParseTargetArgs(Res.getTargetOpts(), *Args);
1669}
1670