CompilerInvocation.cpp revision 124fca533d9fef2e3f6359283909bd342b5f5f26 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Driver/Arg.h"
14#include "clang/Driver/ArgList.h"
15#include "clang/Driver/CC1Options.h"
16#include "clang/Driver/DriverDiagnostic.h"
17#include "clang/Driver/OptTable.h"
18#include "clang/Driver/Option.h"
19#include "clang/Frontend/CompilerInvocation.h"
20#include "clang/Frontend/LangStandard.h"
21#include "clang/Frontend/PCHReader.h"
22#include "llvm/ADT/OwningPtr.h"
23#include "llvm/ADT/SmallVector.h"
24#include "llvm/ADT/StringExtras.h"
25#include "llvm/ADT/StringSwitch.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/System/Host.h"
28#include "llvm/System/Path.h"
29using namespace clang;
30
31static const char *getAnalysisName(Analyses Kind) {
32  switch (Kind) {
33  default:
34    llvm_unreachable("Unknown analysis kind!");
35#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36  case NAME: return "-" CMDFLAG;
37#include "clang/Frontend/Analyses.def"
38  }
39}
40
41static const char *getAnalysisStoreName(AnalysisStores Kind) {
42  switch (Kind) {
43  default:
44    llvm_unreachable("Unknown analysis store!");
45#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46  case NAME##Model: return CMDFLAG;
47#include "clang/Frontend/Analyses.def"
48  }
49}
50
51static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52  switch (Kind) {
53  default:
54    llvm_unreachable("Unknown analysis constraints!");
55#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56  case NAME##Model: return CMDFLAG;
57#include "clang/Frontend/Analyses.def"
58  }
59}
60
61static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62  switch (Kind) {
63  default:
64    llvm_unreachable("Unknown analysis client!");
65#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66  case PD_##NAME: return CMDFLAG;
67#include "clang/Frontend/Analyses.def"
68  }
69}
70
71//===----------------------------------------------------------------------===//
72// Serialization (to args)
73//===----------------------------------------------------------------------===//
74
75static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                               std::vector<std::string> &Res) {
77  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80    Res.push_back("-analyzer-store");
81    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82  }
83  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84    Res.push_back("-analyzer-constraints");
85    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86  }
87  if (Opts.AnalysisDiagOpt != PD_HTML) {
88    Res.push_back("-analyzer-output");
89    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90  }
91  if (!Opts.AnalyzeSpecificFunction.empty()) {
92    Res.push_back("-analyze-function");
93    Res.push_back(Opts.AnalyzeSpecificFunction);
94  }
95  if (Opts.AnalyzeAll)
96    Res.push_back("-analyzer-opt-analyze-headers");
97  if (Opts.AnalyzerDisplayProgress)
98    Res.push_back("-analyzer-display-progress");
99  if (Opts.AnalyzeNestedBlocks)
100    Res.push_back("-analyzer-opt-analyze-nested-blocks");
101  if (Opts.EagerlyAssume)
102    Res.push_back("-analyzer-eagerly-assume");
103  if (!Opts.PurgeDead)
104    Res.push_back("-analyzer-no-purge-dead");
105  if (Opts.TrimGraph)
106    Res.push_back("-trim-egraph");
107  if (Opts.VisualizeEGDot)
108    Res.push_back("-analyzer-viz-egraph-graphviz");
109  if (Opts.VisualizeEGDot)
110    Res.push_back("-analyzer-viz-egraph-ubigraph");
111  if (Opts.EnableExperimentalChecks)
112    Res.push_back("-analyzer-experimental-checks");
113  if (Opts.EnableExperimentalInternalChecks)
114    Res.push_back("-analyzer-experimental-internal-checks");
115}
116
117static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                              std::vector<std::string> &Res) {
119  if (Opts.DebugInfo)
120    Res.push_back("-g");
121  if (Opts.DisableLLVMOpts)
122    Res.push_back("-disable-llvm-optzns");
123  if (Opts.DisableRedZone)
124    Res.push_back("-disable-red-zone");
125  if (!Opts.DwarfDebugFlags.empty()) {
126    Res.push_back("-dwarf-debug-flags");
127    Res.push_back(Opts.DwarfDebugFlags);
128  }
129  if (!Opts.MergeAllConstants)
130    Res.push_back("-fno-merge-all-constants");
131  if (Opts.NoCommon)
132    Res.push_back("-fno-common");
133  if (Opts.NoImplicitFloat)
134    Res.push_back("-no-implicit-float");
135  if (Opts.OptimizeSize) {
136    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137    Res.push_back("-Os");
138  } else if (Opts.OptimizationLevel != 0)
139    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140  if (!Opts.MainFileName.empty()) {
141    Res.push_back("-main-file-name");
142    Res.push_back(Opts.MainFileName);
143  }
144  // SimplifyLibCalls is only derived.
145  // TimePasses is only derived.
146  // UnitAtATime is unused.
147  // UnrollLoops is only derived.
148  // VerifyModule is only derived.
149  // Inlining is only derived.
150
151  if (Opts.AsmVerbose)
152    Res.push_back("-masm-verbose");
153  if (!Opts.CodeModel.empty()) {
154    Res.push_back("-mcode-model");
155    Res.push_back(Opts.CodeModel);
156  }
157  if (!Opts.DebugPass.empty()) {
158    Res.push_back("-mdebug-pass");
159    Res.push_back(Opts.DebugPass);
160  }
161  if (Opts.DisableFPElim)
162    Res.push_back("-mdisable-fp-elim");
163  if (!Opts.FloatABI.empty()) {
164    Res.push_back("-mfloat-abi");
165    Res.push_back(Opts.FloatABI);
166  }
167  if (!Opts.LimitFloatPrecision.empty()) {
168    Res.push_back("-mlimit-float-precision");
169    Res.push_back(Opts.LimitFloatPrecision);
170  }
171  if (Opts.NoZeroInitializedInBSS)
172    Res.push_back("-mno-zero-initialized-bss");
173  if (Opts.SoftFloat)
174    Res.push_back("-msoft-float");
175  if (Opts.UnwindTables)
176    Res.push_back("-munwind-tables");
177  if (Opts.RelocationModel != "pic") {
178    Res.push_back("-mrelocation-model");
179    Res.push_back(Opts.RelocationModel);
180  }
181}
182
183static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
184                                       std::vector<std::string> &Res) {
185  if (Opts.IncludeSystemHeaders)
186    Res.push_back("-sys-header-deps");
187  if (Opts.UsePhonyTargets)
188    Res.push_back("-MP");
189  if (!Opts.OutputFile.empty()) {
190    Res.push_back("-dependency-file");
191    Res.push_back(Opts.OutputFile);
192  }
193  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
194    Res.push_back("-MT");
195    Res.push_back(Opts.Targets[i]);
196  }
197}
198
199static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
200                                 std::vector<std::string> &Res) {
201  if (Opts.IgnoreWarnings)
202    Res.push_back("-w");
203  if (Opts.NoRewriteMacros)
204    Res.push_back("-Wno-rewrite-macros");
205  if (Opts.Pedantic)
206    Res.push_back("-pedantic");
207  if (Opts.PedanticErrors)
208    Res.push_back("-pedantic-errors");
209  if (!Opts.ShowColumn)
210    Res.push_back("-fno-show-column");
211  if (!Opts.ShowLocation)
212    Res.push_back("-fno-show-source-location");
213  if (!Opts.ShowCarets)
214    Res.push_back("-fno-caret-diagnostics");
215  if (!Opts.ShowFixits)
216    Res.push_back("-fno-diagnostics-fixit-info");
217  if (Opts.ShowSourceRanges)
218    Res.push_back("-fdiagnostics-print-source-range-info");
219  if (Opts.ShowColors)
220    Res.push_back("-fcolor-diagnostics");
221  if (Opts.VerifyDiagnostics)
222    Res.push_back("-verify");
223  if (Opts.ShowOptionNames)
224    Res.push_back("-fdiagnostics-show-option");
225  if (Opts.TabStop != 8) {
226    Res.push_back("-ftabstop");
227    Res.push_back(llvm::utostr(Opts.TabStop));
228  }
229  if (Opts.MessageLength) {
230    Res.push_back("-fmessage-length");
231    Res.push_back(llvm::utostr(Opts.MessageLength));
232  }
233  if (!Opts.DumpBuildInformation.empty()) {
234    Res.push_back("-dump-build-information");
235    Res.push_back(Opts.DumpBuildInformation);
236  }
237  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
238    Res.push_back("-W" + Opts.Warnings[i]);
239}
240
241static const char *getInputKindName(FrontendOptions::InputKind Kind) {
242  switch (Kind) {
243  case FrontendOptions::IK_None:              break;
244  case FrontendOptions::IK_AST:               return "ast";
245  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
246  case FrontendOptions::IK_C:                 return "c";
247  case FrontendOptions::IK_CXX:               return "c++";
248  case FrontendOptions::IK_ObjC:              return "objective-c";
249  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
250  case FrontendOptions::IK_OpenCL:            return "cl";
251  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
252  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
253  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
254  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
255  }
256
257  llvm_unreachable("Unexpected language kind!");
258  return 0;
259}
260
261static const char *getActionName(frontend::ActionKind Kind) {
262  switch (Kind) {
263  case frontend::PluginAction:
264  case frontend::InheritanceView:
265    llvm_unreachable("Invalid kind!");
266
267  case frontend::ASTDump:                return "-ast-dump";
268  case frontend::ASTPrint:               return "-ast-print";
269  case frontend::ASTPrintXML:            return "-ast-print-xml";
270  case frontend::ASTView:                return "-ast-view";
271  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
272  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
273  case frontend::DumpTokens:             return "-dump-tokens";
274  case frontend::EmitAssembly:           return "-S";
275  case frontend::EmitBC:                 return "-emit-llvm-bc";
276  case frontend::EmitHTML:               return "-emit-html";
277  case frontend::EmitLLVM:               return "-emit-llvm";
278  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
279  case frontend::FixIt:                  return "-fixit";
280  case frontend::GeneratePCH:            return "-emit-pch";
281  case frontend::GeneratePTH:            return "-emit-pth";
282  case frontend::ParseNoop:              return "-parse-noop";
283  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
284  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
285  case frontend::PrintDeclContext:       return "-print-decl-contexts";
286  case frontend::PrintPreprocessedInput: return "-E";
287  case frontend::RewriteMacros:          return "-rewrite-macros";
288  case frontend::RewriteObjC:            return "-rewrite-objc";
289  case frontend::RewriteTest:            return "-rewrite-test";
290  case frontend::RunAnalysis:            return "-analyze";
291  case frontend::RunPreprocessorOnly:    return "-Eonly";
292  }
293
294  llvm_unreachable("Unexpected language kind!");
295  return 0;
296}
297
298static void FrontendOptsToArgs(const FrontendOptions &Opts,
299                               std::vector<std::string> &Res) {
300  if (!Opts.DebugCodeCompletionPrinter)
301    Res.push_back("-no-code-completion-debug-printer");
302  if (Opts.DisableFree)
303    Res.push_back("-disable-free");
304  if (Opts.EmptyInputOnly)
305    Res.push_back("-empty-input-only");
306  if (Opts.RelocatablePCH)
307    Res.push_back("-relocatable-pch");
308  if (Opts.ShowHelp)
309    Res.push_back("-help");
310  if (Opts.ShowMacrosInCodeCompletion)
311    Res.push_back("-code-completion-macros");
312  if (Opts.ShowStats)
313    Res.push_back("-print-stats");
314  if (Opts.ShowTimers)
315    Res.push_back("-ftime-report");
316  if (Opts.ShowVersion)
317    Res.push_back("-version");
318
319  bool NeedLang = false;
320  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
321    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
322        Opts.Inputs[i].first)
323      NeedLang = true;
324  if (NeedLang) {
325    Res.push_back("-x");
326    Res.push_back(getInputKindName(Opts.Inputs[0].first));
327  }
328  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
329    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
330           "Unable to represent this input vector!");
331    Res.push_back(Opts.Inputs[i].second);
332  }
333
334  if (!Opts.OutputFile.empty()) {
335    Res.push_back("-o");
336    Res.push_back(Opts.OutputFile);
337  }
338  if (!Opts.ViewClassInheritance.empty()) {
339    Res.push_back("-cxx-inheritance-view");
340    Res.push_back(Opts.ViewClassInheritance);
341  }
342  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
343    Res.push_back("-fixit-at");
344    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
345                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
346                  llvm::utostr(Opts.FixItLocations[i].Column));
347  }
348  if (!Opts.CodeCompletionAt.FileName.empty()) {
349    Res.push_back("-code-completion-at");
350    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
351                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
352                  llvm::utostr(Opts.CodeCompletionAt.Column));
353  }
354  if (Opts.ProgramAction != frontend::InheritanceView &&
355      Opts.ProgramAction != frontend::PluginAction)
356    Res.push_back(getActionName(Opts.ProgramAction));
357  if (!Opts.ActionName.empty()) {
358    Res.push_back("-plugin");
359    Res.push_back(Opts.ActionName);
360  }
361  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
362    Res.push_back("-load");
363    Res.push_back(Opts.Plugins[i]);
364  }
365}
366
367static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
368                                   std::vector<std::string> &Res) {
369  if (Opts.Sysroot != "/") {
370    Res.push_back("-isysroot");
371    Res.push_back(Opts.Sysroot);
372  }
373
374  /// User specified include entries.
375  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
376    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
377    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
378      llvm::llvm_report_error("Invalid option set!");
379    if (E.IsUserSupplied) {
380      if (E.Group == frontend::After) {
381        Res.push_back("-idirafter");
382      } else if (E.Group == frontend::Quoted) {
383        Res.push_back("-iquote");
384      } else if (E.Group == frontend::System) {
385        Res.push_back("-isystem");
386      } else {
387        assert(E.Group == frontend::Angled && "Invalid group!");
388        Res.push_back(E.IsFramework ? "-F" : "-I");
389      }
390    } else {
391      if (E.Group != frontend::Angled && E.Group != frontend::System)
392        llvm::llvm_report_error("Invalid option set!");
393      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
394                    "-iwithprefix");
395    }
396    Res.push_back(E.Path);
397  }
398
399  if (!Opts.EnvIncPath.empty()) {
400    // FIXME: Provide an option for this, and move env detection to driver.
401    llvm::llvm_report_error("Not yet implemented!");
402  }
403  if (!Opts.CEnvIncPath.empty()) {
404    // FIXME: Provide an option for this, and move env detection to driver.
405    llvm::llvm_report_error("Not yet implemented!");
406  }
407  if (!Opts.ObjCEnvIncPath.empty()) {
408    // FIXME: Provide an option for this, and move env detection to driver.
409    llvm::llvm_report_error("Not yet implemented!");
410  }
411  if (!Opts.CXXEnvIncPath.empty()) {
412    // FIXME: Provide an option for this, and move env detection to driver.
413    llvm::llvm_report_error("Not yet implemented!");
414  }
415  if (!Opts.ObjCXXEnvIncPath.empty()) {
416    // FIXME: Provide an option for this, and move env detection to driver.
417    llvm::llvm_report_error("Not yet implemented!");
418  }
419  if (!Opts.ResourceDir.empty()) {
420    Res.push_back("-resource-dir");
421    Res.push_back(Opts.ResourceDir);
422  }
423  if (!Opts.UseStandardIncludes)
424    Res.push_back("-nostdinc");
425  if (Opts.Verbose)
426    Res.push_back("-v");
427}
428
429static void LangOptsToArgs(const LangOptions &Opts,
430                           std::vector<std::string> &Res) {
431  LangOptions DefaultLangOpts;
432
433  // FIXME: Need to set -std to get all the implicit options.
434
435  // FIXME: We want to only pass options relative to the defaults, which
436  // requires constructing a target. :(
437  //
438  // It would be better to push the all target specific choices into the driver,
439  // so that everything below that was more uniform.
440
441  if (Opts.Trigraphs)
442    Res.push_back("-trigraphs");
443  // Implicit based on the input kind:
444  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
445  // Implicit based on the input language standard:
446  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
447  if (Opts.DollarIdents)
448    Res.push_back("-fdollars-in-identifiers");
449  if (Opts.Microsoft)
450    Res.push_back("-fms-extensions");
451  if (Opts.ObjCNonFragileABI)
452    Res.push_back("-fobjc-nonfragile-abi");
453  // NoInline is implicit.
454  if (!Opts.CXXOperatorNames)
455    Res.push_back("-fno-operator-names");
456  if (Opts.PascalStrings)
457    Res.push_back("-fpascal-strings");
458  if (Opts.CatchUndefined)
459    Res.push_back("-fcatch-undefined-behavior");
460  if (Opts.WritableStrings)
461    Res.push_back("-fwritable-strings");
462  if (!Opts.LaxVectorConversions)
463    Res.push_back("-fno-lax-vector-conversions");
464  if (Opts.AltiVec)
465    Res.push_back("-faltivec");
466  if (Opts.Exceptions)
467    Res.push_back("-fexceptions");
468  if (!Opts.RTTI)
469    Res.push_back("-fno-rtti");
470  if (!Opts.NeXTRuntime)
471    Res.push_back("-fgnu-runtime");
472  if (Opts.Freestanding)
473    Res.push_back("-ffreestanding");
474  if (Opts.NoBuiltin)
475    Res.push_back("-fno-builtin");
476  if (!Opts.AssumeSaneOperatorNew)
477    Res.push_back("-fno-assume-sane-operator-new");
478  if (Opts.ThreadsafeStatics)
479    llvm::llvm_report_error("FIXME: Not yet implemented!");
480  if (Opts.POSIXThreads)
481    Res.push_back("-pthread");
482  if (Opts.Blocks)
483    Res.push_back("-fblocks");
484  if (Opts.EmitAllDecls)
485    Res.push_back("-femit-all-decls");
486  if (Opts.MathErrno)
487    Res.push_back("-fmath-errno");
488  if (Opts.OverflowChecking)
489    Res.push_back("-ftrapv");
490  if (Opts.HeinousExtensions)
491    Res.push_back("-fheinous-gnu-extensions");
492  // Optimize is implicit.
493  // OptimizeSize is implicit.
494  if (Opts.Static)
495    Res.push_back("-static-define");
496  if (Opts.PICLevel) {
497    Res.push_back("-pic-level");
498    Res.push_back(llvm::utostr(Opts.PICLevel));
499  }
500  if (Opts.ObjCGCBitmapPrint)
501    Res.push_back("-print-ivar-layout");
502  // FIXME: Don't forget to update when the default changes!
503  if (Opts.AccessControl)
504    Res.push_back("-faccess-control");
505  if (!Opts.CharIsSigned)
506    Res.push_back("-fno-signed-char");
507  if (Opts.ShortWChar)
508    Res.push_back("-fshort-wchar");
509  if (!Opts.ElideConstructors)
510    Res.push_back("-fno-elide-constructors");
511  if (Opts.getGCMode() != LangOptions::NonGC) {
512    if (Opts.getGCMode() == LangOptions::HybridGC) {
513      Res.push_back("-fobjc-gc");
514    } else {
515      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
516      Res.push_back("-fobjc-gc-only");
517    }
518  }
519  if (Opts.getVisibilityMode() != LangOptions::Default) {
520    Res.push_back("-fvisibility");
521    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
522      Res.push_back("hidden");
523    } else {
524      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
525             "Invalid visibility!");
526      Res.push_back("protected");
527    }
528  }
529  if (Opts.getStackProtectorMode() != 0) {
530    Res.push_back("-stack-protector");
531    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
532  }
533  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
534    Res.push_back("-ftemplate-depth");
535    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
536  }
537  if (!Opts.ObjCConstantStringClass.empty()) {
538    Res.push_back("-fconstant-string-class");
539    Res.push_back(Opts.ObjCConstantStringClass);
540  }
541}
542
543static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
544                                   std::vector<std::string> &Res) {
545  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
546    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
547                  Opts.Macros[i].first);
548  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
549    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
550    Res.push_back("-include");
551    Res.push_back(Opts.Includes[i]);
552  }
553  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
554    Res.push_back("-imacros");
555    Res.push_back(Opts.MacroIncludes[i]);
556  }
557  if (!Opts.UsePredefines)
558    Res.push_back("-undef");
559  if (!Opts.ImplicitPCHInclude.empty()) {
560    Res.push_back("-include-pch");
561    Res.push_back(Opts.ImplicitPCHInclude);
562  }
563  if (!Opts.ImplicitPTHInclude.empty()) {
564    Res.push_back("-include-pth");
565    Res.push_back(Opts.ImplicitPTHInclude);
566  }
567  if (!Opts.TokenCache.empty()) {
568    if (Opts.ImplicitPTHInclude.empty()) {
569      Res.push_back("-token-cache");
570      Res.push_back(Opts.TokenCache);
571    } else
572      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
573             "Unsupported option combination!");
574  }
575  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
576    Res.push_back("-remap-file");
577    Res.push_back(Opts.RemappedFiles[i].first + ";" +
578                  Opts.RemappedFiles[i].second);
579  }
580}
581
582static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
583                                         std::vector<std::string> &Res) {
584  if (!Opts.ShowCPP && !Opts.ShowMacros)
585    llvm::llvm_report_error("Invalid option combination!");
586
587  if (Opts.ShowCPP && Opts.ShowMacros)
588    Res.push_back("-dD");
589  else if (!Opts.ShowCPP && Opts.ShowMacros)
590    Res.push_back("-dM");
591
592  if (!Opts.ShowLineMarkers)
593    Res.push_back("-P");
594  if (Opts.ShowComments)
595    Res.push_back("-C");
596  if (Opts.ShowMacroComments)
597    Res.push_back("-CC");
598}
599
600static void TargetOptsToArgs(const TargetOptions &Opts,
601                             std::vector<std::string> &Res) {
602  Res.push_back("-triple");
603  Res.push_back(Opts.Triple);
604  if (!Opts.CPU.empty()) {
605    Res.push_back("-target-cpu");
606    Res.push_back(Opts.CPU);
607  }
608  if (!Opts.ABI.empty()) {
609    Res.push_back("-target-abi");
610    Res.push_back(Opts.ABI);
611  }
612  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
613    Res.push_back("-target-feature");
614    Res.push_back(Opts.Features[i]);
615  }
616}
617
618void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
619  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
620  CodeGenOptsToArgs(getCodeGenOpts(), Res);
621  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
622  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
623  FrontendOptsToArgs(getFrontendOpts(), Res);
624  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
625  LangOptsToArgs(getLangOpts(), Res);
626  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
627  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
628  TargetOptsToArgs(getTargetOpts(), Res);
629}
630
631//===----------------------------------------------------------------------===//
632// Deserialization (to args)
633//===----------------------------------------------------------------------===//
634
635using namespace clang::driver;
636using namespace clang::driver::cc1options;
637
638static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
639                                       llvm::StringRef Default = "") {
640  if (Arg *A = Args.getLastArg(ID))
641    return A->getValue(Args);
642  return Default;
643}
644
645static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
646                              int Default, Diagnostic &Diags) {
647  Arg *A = Args.getLastArg(ID);
648  if (!A)
649    return Default;
650
651  int Res = Default;
652  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
653    Diags.Report(diag::err_drv_invalid_int_value)
654        << A->getAsString(Args) << A->getValue(Args);
655
656  return Res;
657}
658
659static std::vector<std::string>
660getAllArgValues(ArgList &Args, cc1options::ID ID) {
661  llvm::SmallVector<const char *, 16> Values;
662  Args.AddAllArgValues(Values, ID);
663  return std::vector<std::string>(Values.begin(), Values.end());
664}
665
666//
667
668static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
669                              Diagnostic &Diags) {
670  using namespace cc1options;
671
672  Opts.AnalysisList.clear();
673#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
674  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
675#include "clang/Frontend/Analyses.def"
676
677  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
678    llvm::StringRef Name = A->getValue(Args);
679    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
680#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
681      .Case(CMDFLAG, NAME##Model)
682#include "clang/Frontend/Analyses.def"
683      .Default(NumStores);
684    // FIXME: Error handling.
685    if (Value == NumStores)
686      Diags.Report(diag::err_drv_invalid_value)
687        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
688    else
689      Opts.AnalysisStoreOpt = Value;
690  }
691
692  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
693    llvm::StringRef Name = A->getValue(Args);
694    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
695#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
696      .Case(CMDFLAG, NAME##Model)
697#include "clang/Frontend/Analyses.def"
698      .Default(NumConstraints);
699    // FIXME: Error handling.
700    if (Value == NumConstraints)
701      Diags.Report(diag::err_drv_invalid_value)
702        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
703    else
704      Opts.AnalysisConstraintsOpt = Value;
705  }
706
707  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
708    llvm::StringRef Name = A->getValue(Args);
709    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
710#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
711      .Case(CMDFLAG, PD_##NAME)
712#include "clang/Frontend/Analyses.def"
713      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
714    // FIXME: Error handling.
715    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
716      Diags.Report(diag::err_drv_invalid_value)
717        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
718    else
719      Opts.AnalysisDiagOpt = Value;
720  }
721
722  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
723  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
724  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
725  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
726  Opts.AnalyzeNestedBlocks =
727    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
728  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
729  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
730  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
731  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
732  Opts.EnableExperimentalInternalChecks =
733    Args.hasArg(OPT_analyzer_experimental_internal_checks);
734  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
735}
736
737static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
738                             Diagnostic &Diags) {
739  using namespace cc1options;
740  // -Os implies -O2
741  if (Args.hasArg(OPT_Os))
742    Opts.OptimizationLevel = 2;
743  else {
744    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
745    if (Opts.OptimizationLevel > 3) {
746      Diags.Report(diag::err_drv_invalid_value)
747        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
748      Opts.OptimizationLevel = 3;
749    }
750  }
751
752  // We must always run at least the always inlining pass.
753  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
754    : CodeGenOptions::OnlyAlwaysInlining;
755
756  Opts.DebugInfo = Args.hasArg(OPT_g);
757  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
758  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
759  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
760  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
761  Opts.NoCommon = Args.hasArg(OPT_fno_common);
762  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
763  Opts.OptimizeSize = Args.hasArg(OPT_Os);
764  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
765
766  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
767  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
768  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
769  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
770  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
771  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
772  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
773  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
774  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
775  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
776
777  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
778
779  // FIXME: Put elsewhere?
780#ifdef NDEBUG
781  Opts.VerifyModule = 0;
782#else
783  Opts.VerifyModule = 1;
784#endif
785}
786
787static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
788                                      ArgList &Args) {
789  using namespace cc1options;
790  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
791  Opts.Targets = getAllArgValues(Args, OPT_MT);
792  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
793  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
794}
795
796static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
797                                Diagnostic &Diags) {
798  using namespace cc1options;
799  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
800  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
801  Opts.Pedantic = Args.hasArg(OPT_pedantic);
802  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
803  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
804  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
805  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
806  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
807  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
808  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
809  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
810  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
811  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 8, Diags);
812  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
813  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
814  Opts.Warnings = getAllArgValues(Args, OPT_W);
815}
816
817static FrontendOptions::InputKind
818ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
819  using namespace cc1options;
820  Opts.ProgramAction = frontend::ParseSyntaxOnly;
821  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
822    switch (A->getOption().getID()) {
823    default:
824      assert(0 && "Invalid option in group!");
825    case OPT_ast_dump:
826      Opts.ProgramAction = frontend::ASTDump; break;
827    case OPT_ast_print:
828      Opts.ProgramAction = frontend::ASTPrint; break;
829    case OPT_ast_print_xml:
830      Opts.ProgramAction = frontend::ASTPrintXML; break;
831    case OPT_ast_view:
832      Opts.ProgramAction = frontend::ASTView; break;
833    case OPT_dump_raw_tokens:
834      Opts.ProgramAction = frontend::DumpRawTokens; break;
835    case OPT_dump_record_layouts:
836      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
837    case OPT_dump_tokens:
838      Opts.ProgramAction = frontend::DumpTokens; break;
839    case OPT_S:
840      Opts.ProgramAction = frontend::EmitAssembly; break;
841    case OPT_emit_llvm_bc:
842      Opts.ProgramAction = frontend::EmitBC; break;
843    case OPT_emit_html:
844      Opts.ProgramAction = frontend::EmitHTML; break;
845    case OPT_emit_llvm:
846      Opts.ProgramAction = frontend::EmitLLVM; break;
847    case OPT_emit_llvm_only:
848      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
849    case OPT_fixit:
850      Opts.ProgramAction = frontend::FixIt; break;
851    case OPT_emit_pch:
852      Opts.ProgramAction = frontend::GeneratePCH; break;
853    case OPT_emit_pth:
854      Opts.ProgramAction = frontend::GeneratePTH; break;
855    case OPT_parse_noop:
856      Opts.ProgramAction = frontend::ParseNoop; break;
857    case OPT_parse_print_callbacks:
858      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
859    case OPT_fsyntax_only:
860      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
861    case OPT_print_decl_contexts:
862      Opts.ProgramAction = frontend::PrintDeclContext; break;
863    case OPT_E:
864      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
865    case OPT_rewrite_macros:
866      Opts.ProgramAction = frontend::RewriteMacros; break;
867    case OPT_rewrite_objc:
868      Opts.ProgramAction = frontend::RewriteObjC; break;
869    case OPT_rewrite_test:
870      Opts.ProgramAction = frontend::RewriteTest; break;
871    case OPT_analyze:
872      Opts.ProgramAction = frontend::RunAnalysis; break;
873    case OPT_Eonly:
874      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
875    }
876  }
877  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
878    Opts.ProgramAction = frontend::PluginAction;
879    Opts.ActionName = A->getValue(Args);
880  }
881
882  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
883    Opts.CodeCompletionAt =
884      ParsedSourceLocation::FromString(A->getValue(Args));
885    if (Opts.CodeCompletionAt.FileName.empty())
886      Diags.Report(diag::err_drv_invalid_value)
887        << A->getAsString(Args) << A->getValue(Args);
888  }
889  Opts.DebugCodeCompletionPrinter =
890    !Args.hasArg(OPT_no_code_completion_debug_printer);
891  Opts.DisableFree = Args.hasArg(OPT_disable_free);
892  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
893
894  Opts.FixItLocations.clear();
895  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
896         ie = Args.filtered_end(); it != ie; ++it) {
897    const char *Loc = it->getValue(Args);
898    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
899
900    if (PSL.FileName.empty()) {
901      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
902      continue;
903    }
904
905    Opts.FixItLocations.push_back(PSL);
906  }
907
908  Opts.OutputFile = getLastArgValue(Args, OPT_o);
909  Opts.Plugins = getAllArgValues(Args, OPT_load);
910  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
911  Opts.ShowHelp = Args.hasArg(OPT_help);
912  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
913  Opts.ShowStats = Args.hasArg(OPT_print_stats);
914  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
915  Opts.ShowVersion = Args.hasArg(OPT_version);
916  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
917
918  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
919  if (const Arg *A = Args.getLastArg(OPT_x)) {
920    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
921      .Case("c", FrontendOptions::IK_C)
922      .Case("cl", FrontendOptions::IK_OpenCL)
923      .Case("c", FrontendOptions::IK_C)
924      .Case("cl", FrontendOptions::IK_OpenCL)
925      .Case("c++", FrontendOptions::IK_CXX)
926      .Case("objective-c", FrontendOptions::IK_ObjC)
927      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
928      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
929      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
930      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
931      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
932      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
933      .Case("c-header", FrontendOptions::IK_C)
934      .Case("objective-c-header", FrontendOptions::IK_ObjC)
935      .Case("c++-header", FrontendOptions::IK_CXX)
936      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
937      .Case("ast", FrontendOptions::IK_AST)
938      .Default(FrontendOptions::IK_None);
939    if (DashX == FrontendOptions::IK_None)
940      Diags.Report(diag::err_drv_invalid_value)
941        << A->getAsString(Args) << A->getValue(Args);
942  }
943
944  // '-' is the default input if none is given.
945  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
946  Opts.Inputs.clear();
947  if (Inputs.empty())
948    Inputs.push_back("-");
949  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
950    FrontendOptions::InputKind IK = DashX;
951    if (IK == FrontendOptions::IK_None) {
952      IK = FrontendOptions::getInputKindForExtension(
953        llvm::StringRef(Inputs[i]).rsplit('.').second);
954      // FIXME: Remove this hack.
955      if (i == 0)
956        DashX = IK;
957    }
958    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
959  }
960
961  return DashX;
962}
963
964std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
965                                                 void *MainAddr) {
966  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
967
968  if (!P.isEmpty()) {
969    P.eraseComponent();  // Remove /clang from foo/bin/clang
970    P.eraseComponent();  // Remove /bin   from foo/bin
971
972    // Get foo/lib/clang/<version>/include
973    P.appendComponent("lib");
974    P.appendComponent("clang");
975    P.appendComponent(CLANG_VERSION_STRING);
976  }
977
978  return P.str();
979}
980
981static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
982  using namespace cc1options;
983  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
984  Opts.Verbose = Args.hasArg(OPT_v);
985  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
986  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
987  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
988
989  // Add -I... and -F... options in order.
990  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
991         ie = Args.filtered_end(); it != ie; ++it)
992    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
993                 /*IsFramework=*/ it->getOption().matches(OPT_F));
994
995  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
996  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
997  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
998                                             OPT_iwithprefixbefore),
999         ie = Args.filtered_end(); it != ie; ++it) {
1000    if (it->getOption().matches(OPT_iprefix))
1001      Prefix = it->getValue(Args);
1002    else if (it->getOption().matches(OPT_iwithprefix))
1003      Opts.AddPath(Prefix.str() + it->getValue(Args),
1004                   frontend::System, false, false);
1005    else
1006      Opts.AddPath(Prefix.str() + it->getValue(Args),
1007                   frontend::Angled, false, false);
1008  }
1009
1010  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1011         ie = Args.filtered_end(); it != ie; ++it)
1012    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1013  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1014         ie = Args.filtered_end(); it != ie; ++it)
1015    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1016  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1017         ie = Args.filtered_end(); it != ie; ++it)
1018    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1019
1020  // FIXME: Need options for the various environment variables!
1021}
1022
1023static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1024                          FrontendOptions::InputKind IK,
1025                          Diagnostic &Diags) {
1026  // FIXME: Cleanup per-file based stuff.
1027
1028  // Set some properties which depend soley on the input kind; it would be nice
1029  // to move these to the language standard, and have the driver resolve the
1030  // input kind + language standard.
1031  if (IK == FrontendOptions::IK_Asm) {
1032    Opts.AsmPreprocessor = 1;
1033  } else if (IK == FrontendOptions::IK_ObjC ||
1034             IK == FrontendOptions::IK_ObjCXX ||
1035             IK == FrontendOptions::IK_PreprocessedObjC ||
1036             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1037    Opts.ObjC1 = Opts.ObjC2 = 1;
1038  }
1039
1040  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1041  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1042    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1043#define LANGSTANDARD(id, name, desc, features) \
1044      .Case(name, LangStandard::lang_##id)
1045#include "clang/Frontend/LangStandards.def"
1046      .Default(LangStandard::lang_unspecified);
1047    if (LangStd == LangStandard::lang_unspecified)
1048      Diags.Report(diag::err_drv_invalid_value)
1049        << A->getAsString(Args) << A->getValue(Args);
1050  }
1051
1052  if (LangStd == LangStandard::lang_unspecified) {
1053    // Based on the base language, pick one.
1054    switch (IK) {
1055    case FrontendOptions::IK_None:
1056    case FrontendOptions::IK_AST:
1057      assert(0 && "Invalid input kind!");
1058    case FrontendOptions::IK_OpenCL:
1059      LangStd = LangStandard::lang_opencl;
1060      break;
1061    case FrontendOptions::IK_Asm:
1062    case FrontendOptions::IK_C:
1063    case FrontendOptions::IK_PreprocessedC:
1064    case FrontendOptions::IK_ObjC:
1065    case FrontendOptions::IK_PreprocessedObjC:
1066      LangStd = LangStandard::lang_gnu99;
1067      break;
1068    case FrontendOptions::IK_CXX:
1069    case FrontendOptions::IK_PreprocessedCXX:
1070    case FrontendOptions::IK_ObjCXX:
1071    case FrontendOptions::IK_PreprocessedObjCXX:
1072      LangStd = LangStandard::lang_gnucxx98;
1073      break;
1074    }
1075  }
1076
1077  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1078  Opts.BCPLComment = Std.hasBCPLComments();
1079  Opts.C99 = Std.isC99();
1080  Opts.CPlusPlus = Std.isCPlusPlus();
1081  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1082  Opts.Digraphs = Std.hasDigraphs();
1083  Opts.GNUMode = Std.isGNUMode();
1084  Opts.GNUInline = !Std.isC99();
1085  Opts.HexFloats = Std.hasHexFloats();
1086  Opts.ImplicitInt = Std.hasImplicitInt();
1087
1088  // OpenCL has some additional defaults.
1089  if (LangStd == LangStandard::lang_opencl) {
1090    Opts.OpenCL = 1;
1091    Opts.AltiVec = 1;
1092    Opts.CXXOperatorNames = 1;
1093    Opts.LaxVectorConversions = 1;
1094  }
1095
1096  // OpenCL and C++ both have bool, true, false keywords.
1097  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1098
1099  if (Opts.CPlusPlus)
1100    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1101
1102  if (Args.hasArg(OPT_fobjc_gc_only))
1103    Opts.setGCMode(LangOptions::GCOnly);
1104  else if (Args.hasArg(OPT_fobjc_gc))
1105    Opts.setGCMode(LangOptions::HybridGC);
1106
1107  if (Args.hasArg(OPT_print_ivar_layout))
1108    Opts.ObjCGCBitmapPrint = 1;
1109
1110  if (Args.hasArg(OPT_faltivec))
1111    Opts.AltiVec = 1;
1112
1113  if (Args.hasArg(OPT_pthread))
1114    Opts.POSIXThreads = 1;
1115
1116  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1117                                        "default");
1118  if (Vis == "default")
1119    Opts.setVisibilityMode(LangOptions::Default);
1120  else if (Vis == "hidden")
1121    Opts.setVisibilityMode(LangOptions::Hidden);
1122  else if (Vis == "protected")
1123    Opts.setVisibilityMode(LangOptions::Protected);
1124  else
1125    Diags.Report(diag::err_drv_invalid_value)
1126      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1127
1128  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1129
1130  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1131  // is specified, or -std is set to a conforming mode.
1132  Opts.Trigraphs = !Opts.GNUMode;
1133  if (Args.hasArg(OPT_trigraphs))
1134    Opts.Trigraphs = 1;
1135
1136  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1137                                   OPT_fno_dollars_in_identifiers,
1138                                   !Opts.AsmPreprocessor);
1139  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1140  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1141  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1142  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1143      Opts.LaxVectorConversions = 0;
1144  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1145  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1146  Opts.Blocks = Args.hasArg(OPT_fblocks);
1147  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1148  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1149  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1150  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1151  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1152  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1153  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1154  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1155  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1156  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1157                                               Diags);
1158  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1159  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1160                                                 OPT_fconstant_string_class);
1161  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1162  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1163  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1164  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1165  Opts.Static = Args.hasArg(OPT_static_define);
1166  Opts.OptimizeSize = 0;
1167
1168  // FIXME: Eliminate this dependency.
1169  unsigned Opt =
1170    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1171  Opts.Optimize = Opt != 0;
1172
1173  // This is the __NO_INLINE__ define, which just depends on things like the
1174  // optimization level and -fno-inline, not actually whether the backend has
1175  // inlining enabled.
1176  //
1177  // FIXME: This is affected by other options (-fno-inline).
1178  Opts.NoInline = !Opt;
1179
1180  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1181  switch (SSP) {
1182  default:
1183    Diags.Report(diag::err_drv_invalid_value)
1184      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1185    break;
1186  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1187  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1188  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1189  }
1190}
1191
1192static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1193                                  Diagnostic &Diags) {
1194  using namespace cc1options;
1195  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1196  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1197  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1198      Opts.TokenCache = A->getValue(Args);
1199  else
1200    Opts.TokenCache = Opts.ImplicitPTHInclude;
1201  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1202
1203  // Add macros from the command line.
1204  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1205         ie = Args.filtered_end(); it != ie; ++it) {
1206    if (it->getOption().matches(OPT_D))
1207      Opts.addMacroDef(it->getValue(Args));
1208    else
1209      Opts.addMacroUndef(it->getValue(Args));
1210  }
1211
1212  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1213
1214  // Add the ordered list of -includes.
1215  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1216                                             OPT_include_pth),
1217         ie = Args.filtered_end(); it != ie; ++it) {
1218    // PCH is handled specially, we need to extra the original include path.
1219    if (it->getOption().matches(OPT_include_pch)) {
1220      std::string OriginalFile =
1221        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1222      if (OriginalFile.empty())
1223        continue;
1224
1225      Opts.Includes.push_back(OriginalFile);
1226    } else
1227      Opts.Includes.push_back(it->getValue(Args));
1228  }
1229
1230  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1231         ie = Args.filtered_end(); it != ie; ++it) {
1232    std::pair<llvm::StringRef,llvm::StringRef> Split =
1233      llvm::StringRef(it->getValue(Args)).split(';');
1234
1235    if (Split.second.empty()) {
1236      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1237      continue;
1238    }
1239
1240    Opts.addRemappedFile(Split.first, Split.second);
1241  }
1242}
1243
1244static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1245                                        ArgList &Args) {
1246  using namespace cc1options;
1247  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1248  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1249  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1250  Opts.ShowComments = Args.hasArg(OPT_C);
1251  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1252}
1253
1254static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1255  using namespace cc1options;
1256  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1257  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1258  Opts.Triple = getLastArgValue(Args, OPT_triple);
1259  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1260
1261  // Use the host triple if unspecified.
1262  if (Opts.Triple.empty())
1263    Opts.Triple = llvm::sys::getHostTriple();
1264}
1265
1266//
1267
1268void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1269                                        const char **ArgBegin,
1270                                        const char **ArgEnd,
1271                                        Diagnostic &Diags) {
1272  // Parse the arguments.
1273  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1274  unsigned MissingArgIndex, MissingArgCount;
1275  llvm::OwningPtr<InputArgList> Args(
1276    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1277
1278  // Check for missing argument error.
1279  if (MissingArgCount)
1280    Diags.Report(diag::err_drv_missing_argument)
1281      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1282
1283  // Issue errors on unknown arguments.
1284  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1285         ie = Args->filtered_end(); it != ie; ++it)
1286    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1287
1288  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1289  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1290  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1291  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1292  FrontendOptions::InputKind DashX =
1293    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1294  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1295  if (DashX != FrontendOptions::IK_AST)
1296    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1297  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1298  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1299  ParseTargetArgs(Res.getTargetOpts(), *Args);
1300}
1301