CompilerInvocation.cpp revision f2d8b9f967a1ab53ee9fdbcc3ac0a4ee0a83a26e 
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.MessageLength) {
226    Res.push_back("-fmessage-length");
227    Res.push_back(llvm::utostr(Opts.MessageLength));
228  }
229  if (!Opts.DumpBuildInformation.empty()) {
230    Res.push_back("-dump-build-information");
231    Res.push_back(Opts.DumpBuildInformation);
232  }
233  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
234    Res.push_back("-W" + Opts.Warnings[i]);
235}
236
237static const char *getInputKindName(FrontendOptions::InputKind Kind) {
238  switch (Kind) {
239  case FrontendOptions::IK_None:              break;
240  case FrontendOptions::IK_AST:               return "ast";
241  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
242  case FrontendOptions::IK_C:                 return "c";
243  case FrontendOptions::IK_CXX:               return "c++";
244  case FrontendOptions::IK_ObjC:              return "objective-c";
245  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
246  case FrontendOptions::IK_OpenCL:            return "cl";
247  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
248  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
249  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
250  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
251  }
252
253  llvm_unreachable("Unexpected language kind!");
254  return 0;
255}
256
257static const char *getActionName(frontend::ActionKind Kind) {
258  switch (Kind) {
259  case frontend::PluginAction:
260  case frontend::InheritanceView:
261    llvm_unreachable("Invalid kind!");
262
263  case frontend::ASTDump:                return "-ast-dump";
264  case frontend::ASTPrint:               return "-ast-print";
265  case frontend::ASTPrintXML:            return "-ast-print-xml";
266  case frontend::ASTView:                return "-ast-view";
267  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
268  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
269  case frontend::DumpTokens:             return "-dump-tokens";
270  case frontend::EmitAssembly:           return "-S";
271  case frontend::EmitBC:                 return "-emit-llvm-bc";
272  case frontend::EmitHTML:               return "-emit-html";
273  case frontend::EmitLLVM:               return "-emit-llvm";
274  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
275  case frontend::FixIt:                  return "-fixit";
276  case frontend::GeneratePCH:            return "-emit-pch";
277  case frontend::GeneratePTH:            return "-emit-pth";
278  case frontend::ParseNoop:              return "-parse-noop";
279  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
280  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
281  case frontend::PrintDeclContext:       return "-print-decl-contexts";
282  case frontend::PrintPreprocessedInput: return "-E";
283  case frontend::RewriteBlocks:          return "-rewrite-blocks";
284  case frontend::RewriteMacros:          return "-rewrite-macros";
285  case frontend::RewriteObjC:            return "-rewrite-objc";
286  case frontend::RewriteTest:            return "-rewrite-test";
287  case frontend::RunAnalysis:            return "-analyze";
288  case frontend::RunPreprocessorOnly:    return "-Eonly";
289  }
290
291  llvm_unreachable("Unexpected language kind!");
292  return 0;
293}
294
295static void FrontendOptsToArgs(const FrontendOptions &Opts,
296                               std::vector<std::string> &Res) {
297  if (!Opts.DebugCodeCompletionPrinter)
298    Res.push_back("-no-code-completion-debug-printer");
299  if (Opts.DisableFree)
300    Res.push_back("-disable-free");
301  if (Opts.EmptyInputOnly)
302    Res.push_back("-empty-input-only");
303  if (Opts.RelocatablePCH)
304    Res.push_back("-relocatable-pch");
305  if (Opts.ShowHelp)
306    Res.push_back("-help");
307  if (Opts.ShowMacrosInCodeCompletion)
308    Res.push_back("-code-completion-macros");
309  if (Opts.ShowStats)
310    Res.push_back("-print-stats");
311  if (Opts.ShowTimers)
312    Res.push_back("-ftime-report");
313  if (Opts.ShowVersion)
314    Res.push_back("-version");
315
316  bool NeedLang = false;
317  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
318    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
319        Opts.Inputs[i].first)
320      NeedLang = true;
321  if (NeedLang) {
322    Res.push_back("-x");
323    Res.push_back(getInputKindName(Opts.Inputs[0].first));
324  }
325  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
326    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
327           "Unable to represent this input vector!");
328    Res.push_back(Opts.Inputs[i].second);
329  }
330
331  if (!Opts.OutputFile.empty()) {
332    Res.push_back("-o");
333    Res.push_back(Opts.OutputFile);
334  }
335  if (!Opts.ViewClassInheritance.empty()) {
336    Res.push_back("-cxx-inheritance-view");
337    Res.push_back(Opts.ViewClassInheritance);
338  }
339  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
340    Res.push_back("-fixit-at");
341    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
342                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
343                  llvm::utostr(Opts.FixItLocations[i].Column));
344  }
345  if (!Opts.CodeCompletionAt.FileName.empty()) {
346    Res.push_back("-code-completion-at");
347    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
348                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
349                  llvm::utostr(Opts.CodeCompletionAt.Column));
350  }
351  if (Opts.ProgramAction != frontend::InheritanceView &&
352      Opts.ProgramAction != frontend::PluginAction)
353    Res.push_back(getActionName(Opts.ProgramAction));
354  if (!Opts.ActionName.empty()) {
355    Res.push_back("-plugin");
356    Res.push_back(Opts.ActionName);
357  }
358  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
359    Res.push_back("-load");
360    Res.push_back(Opts.Plugins[i]);
361  }
362}
363
364static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
365                                   std::vector<std::string> &Res) {
366  if (Opts.Sysroot != "/") {
367    Res.push_back("-isysroot");
368    Res.push_back(Opts.Sysroot);
369  }
370
371  /// User specified include entries.
372  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
373    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
374    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
375      llvm::llvm_report_error("Invalid option set!");
376    if (E.IsUserSupplied) {
377      if (E.Group == frontend::After) {
378        Res.push_back("-idirafter");
379      } else if (E.Group == frontend::Quoted) {
380        Res.push_back("-iquote");
381      } else if (E.Group == frontend::System) {
382        Res.push_back("-isystem");
383      } else {
384        assert(E.Group == frontend::Angled && "Invalid group!");
385        Res.push_back(E.IsFramework ? "-F" : "-I");
386      }
387    } else {
388      if (E.Group != frontend::Angled && E.Group != frontend::System)
389        llvm::llvm_report_error("Invalid option set!");
390      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
391                    "-iwithprefix");
392    }
393    Res.push_back(E.Path);
394  }
395
396  if (!Opts.EnvIncPath.empty()) {
397    // FIXME: Provide an option for this, and move env detection to driver.
398    llvm::llvm_report_error("Not yet implemented!");
399  }
400  if (!Opts.CEnvIncPath.empty()) {
401    // FIXME: Provide an option for this, and move env detection to driver.
402    llvm::llvm_report_error("Not yet implemented!");
403  }
404  if (!Opts.ObjCEnvIncPath.empty()) {
405    // FIXME: Provide an option for this, and move env detection to driver.
406    llvm::llvm_report_error("Not yet implemented!");
407  }
408  if (!Opts.CXXEnvIncPath.empty()) {
409    // FIXME: Provide an option for this, and move env detection to driver.
410    llvm::llvm_report_error("Not yet implemented!");
411  }
412  if (!Opts.ObjCXXEnvIncPath.empty()) {
413    // FIXME: Provide an option for this, and move env detection to driver.
414    llvm::llvm_report_error("Not yet implemented!");
415  }
416  if (!Opts.ResourceDir.empty()) {
417    Res.push_back("-resource-dir");
418    Res.push_back(Opts.ResourceDir);
419  }
420  if (!Opts.UseStandardIncludes)
421    Res.push_back("-nostdinc");
422  if (Opts.Verbose)
423    Res.push_back("-v");
424}
425
426static void LangOptsToArgs(const LangOptions &Opts,
427                           std::vector<std::string> &Res) {
428  LangOptions DefaultLangOpts;
429
430  // FIXME: Need to set -std to get all the implicit options.
431
432  // FIXME: We want to only pass options relative to the defaults, which
433  // requires constructing a target. :(
434  //
435  // It would be better to push the all target specific choices into the driver,
436  // so that everything below that was more uniform.
437
438  if (Opts.Trigraphs)
439    Res.push_back("-trigraphs");
440  // Implicit based on the input kind:
441  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
442  // Implicit based on the input language standard:
443  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
444  if (Opts.DollarIdents)
445    Res.push_back("-fdollars-in-identifiers");
446  if (Opts.Microsoft)
447    Res.push_back("-fms-extensions");
448  if (Opts.ObjCNonFragileABI)
449    Res.push_back("-fobjc-nonfragile-abi");
450  // NoInline is implicit.
451  if (!Opts.CXXOperatorNames)
452    Res.push_back("-fno-operator-names");
453  if (Opts.PascalStrings)
454    Res.push_back("-fpascal-strings");
455  if (Opts.CatchUndefined)
456    Res.push_back("-fcatch-undefined-behavior");
457  if (Opts.WritableStrings)
458    Res.push_back("-fwritable-strings");
459  if (!Opts.LaxVectorConversions)
460    Res.push_back("-fno-lax-vector-conversions");
461  if (Opts.AltiVec)
462    Res.push_back("-faltivec");
463  if (Opts.Exceptions)
464    Res.push_back("-fexceptions");
465  if (!Opts.RTTI)
466    Res.push_back("-fno-rtti");
467  if (!Opts.NeXTRuntime)
468    Res.push_back("-fgnu-runtime");
469  if (Opts.Freestanding)
470    Res.push_back("-ffreestanding");
471  if (Opts.NoBuiltin)
472    Res.push_back("-fno-builtin");
473  if (!Opts.AssumeSaneOperatorNew)
474    Res.push_back("-fno-assume-sane-operator-new");
475  if (Opts.ThreadsafeStatics)
476    llvm::llvm_report_error("FIXME: Not yet implemented!");
477  if (Opts.POSIXThreads)
478    Res.push_back("-pthread");
479  if (Opts.Blocks)
480    Res.push_back("-fblocks");
481  if (Opts.EmitAllDecls)
482    Res.push_back("-femit-all-decls");
483  if (!Opts.MathErrno)
484    Res.push_back("-fno-math-errno");
485  if (Opts.OverflowChecking)
486    Res.push_back("-ftrapv");
487  if (Opts.HeinousExtensions)
488    Res.push_back("-fheinous-gnu-extensions");
489  // Optimize is implicit.
490  // OptimizeSize is implicit.
491  if (Opts.Static)
492    Res.push_back("-static-define");
493  if (Opts.PICLevel) {
494    Res.push_back("-pic-level");
495    Res.push_back(llvm::utostr(Opts.PICLevel));
496  }
497  if (Opts.ObjCGCBitmapPrint)
498    Res.push_back("-print-ivar-layout");
499  // FIXME: Don't forget to update when the default changes!
500  if (Opts.AccessControl)
501    Res.push_back("-faccess-control");
502  if (!Opts.CharIsSigned)
503    Res.push_back("-fno-signed-char");
504  if (Opts.ShortWChar)
505    Res.push_back("-fshort-wchar");
506  if (!Opts.ElideConstructors)
507    Res.push_back("-fno-elide-constructors");
508  if (Opts.getGCMode() != LangOptions::NonGC) {
509    if (Opts.getGCMode() == LangOptions::HybridGC) {
510      Res.push_back("-fobjc-gc");
511    } else {
512      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
513      Res.push_back("-fobjc-gc-only");
514    }
515  }
516  if (Opts.getVisibilityMode() != LangOptions::Default) {
517    Res.push_back("-fvisibility");
518    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
519      Res.push_back("hidden");
520    } else {
521      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
522             "Invalid visibility!");
523      Res.push_back("protected");
524    }
525  }
526  if (Opts.getStackProtectorMode() != 0) {
527    Res.push_back("-stack-protector");
528    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
529  }
530  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
531    Res.push_back("-ftemplate-depth");
532    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
533  }
534  if (!Opts.ObjCConstantStringClass.empty()) {
535    Res.push_back("-fconstant-string-class");
536    Res.push_back(Opts.ObjCConstantStringClass);
537  }
538}
539
540static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
541                                   std::vector<std::string> &Res) {
542  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
543    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
544                  Opts.Macros[i].first);
545  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
546    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
547    Res.push_back("-include");
548    Res.push_back(Opts.Includes[i]);
549  }
550  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
551    Res.push_back("-imacros");
552    Res.push_back(Opts.MacroIncludes[i]);
553  }
554  if (!Opts.UsePredefines)
555    Res.push_back("-undef");
556  if (!Opts.ImplicitPCHInclude.empty()) {
557    Res.push_back("-include-pch");
558    Res.push_back(Opts.ImplicitPCHInclude);
559  }
560  if (!Opts.ImplicitPTHInclude.empty()) {
561    Res.push_back("-include-pth");
562    Res.push_back(Opts.ImplicitPTHInclude);
563  }
564  if (!Opts.TokenCache.empty()) {
565    if (Opts.ImplicitPTHInclude.empty()) {
566      Res.push_back("-token-cache");
567      Res.push_back(Opts.TokenCache);
568    } else
569      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
570             "Unsupported option combination!");
571  }
572  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
573    Res.push_back("-remap-file");
574    Res.push_back(Opts.RemappedFiles[i].first + ";" +
575                  Opts.RemappedFiles[i].second);
576  }
577}
578
579static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
580                                         std::vector<std::string> &Res) {
581  if (!Opts.ShowCPP && !Opts.ShowMacros)
582    llvm::llvm_report_error("Invalid option combination!");
583
584  if (Opts.ShowCPP && Opts.ShowMacros)
585    Res.push_back("-dD");
586  else if (!Opts.ShowCPP && Opts.ShowMacros)
587    Res.push_back("-dM");
588
589  if (!Opts.ShowLineMarkers)
590    Res.push_back("-P");
591  if (Opts.ShowComments)
592    Res.push_back("-C");
593  if (Opts.ShowMacroComments)
594    Res.push_back("-CC");
595}
596
597static void TargetOptsToArgs(const TargetOptions &Opts,
598                             std::vector<std::string> &Res) {
599  Res.push_back("-triple");
600  Res.push_back(Opts.Triple);
601  if (!Opts.CPU.empty()) {
602    Res.push_back("-mcpu");
603    Res.push_back(Opts.CPU);
604  }
605  if (!Opts.ABI.empty()) {
606    Res.push_back("-target-abi");
607    Res.push_back(Opts.ABI);
608  }
609  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
610    Res.push_back("-target-feature");
611    Res.push_back(Opts.Features[i]);
612  }
613}
614
615void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
616  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
617  CodeGenOptsToArgs(getCodeGenOpts(), Res);
618  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
619  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
620  FrontendOptsToArgs(getFrontendOpts(), Res);
621  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
622  LangOptsToArgs(getLangOpts(), Res);
623  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
624  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
625  TargetOptsToArgs(getTargetOpts(), Res);
626}
627
628//===----------------------------------------------------------------------===//
629// Deserialization (to args)
630//===----------------------------------------------------------------------===//
631
632using namespace clang::driver;
633using namespace clang::driver::cc1options;
634
635static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
636                                       llvm::StringRef Default = "") {
637  if (Arg *A = Args.getLastArg(ID))
638    return A->getValue(Args);
639  return Default;
640}
641
642static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
643                              int Default, Diagnostic &Diags) {
644  Arg *A = Args.getLastArg(ID);
645  if (!A)
646    return Default;
647
648  int Res = Default;
649  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
650    Diags.Report(diag::err_drv_invalid_int_value)
651        << A->getAsString(Args) << A->getValue(Args);
652
653  return Res;
654}
655
656static std::vector<std::string>
657getAllArgValues(ArgList &Args, cc1options::ID ID) {
658  llvm::SmallVector<const char *, 16> Values;
659  Args.AddAllArgValues(Values, ID);
660  return std::vector<std::string>(Values.begin(), Values.end());
661}
662
663//
664
665static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
666                              Diagnostic &Diags) {
667  using namespace cc1options;
668
669  Opts.AnalysisList.clear();
670#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
671  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
672#include "clang/Frontend/Analyses.def"
673
674  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
675    llvm::StringRef Name = A->getValue(Args);
676    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
677#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
678      .Case(CMDFLAG, NAME##Model)
679#include "clang/Frontend/Analyses.def"
680      .Default(NumStores);
681    // FIXME: Error handling.
682    if (Value == NumStores)
683      Diags.Report(diag::err_drv_invalid_value)
684        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
685    else
686      Opts.AnalysisStoreOpt = Value;
687  }
688
689  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
690    llvm::StringRef Name = A->getValue(Args);
691    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
692#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
693      .Case(CMDFLAG, NAME##Model)
694#include "clang/Frontend/Analyses.def"
695      .Default(NumConstraints);
696    // FIXME: Error handling.
697    if (Value == NumConstraints)
698      Diags.Report(diag::err_drv_invalid_value)
699        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
700    else
701      Opts.AnalysisConstraintsOpt = Value;
702  }
703
704  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
705    llvm::StringRef Name = A->getValue(Args);
706    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
707#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
708      .Case(CMDFLAG, PD_##NAME)
709#include "clang/Frontend/Analyses.def"
710      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
711    // FIXME: Error handling.
712    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
713      Diags.Report(diag::err_drv_invalid_value)
714        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
715    else
716      Opts.AnalysisDiagOpt = Value;
717  }
718
719  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
720  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
721  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
722  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
723  Opts.AnalyzeNestedBlocks =
724    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
725  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
726  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
727  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
728  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
729  Opts.EnableExperimentalInternalChecks =
730    Args.hasArg(OPT_analyzer_experimental_internal_checks);
731  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
732}
733
734static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
735                             Diagnostic &Diags) {
736  using namespace cc1options;
737  // -Os implies -O2
738  if (Args.hasArg(OPT_Os))
739    Opts.OptimizationLevel = 2;
740  else {
741    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
742    if (Opts.OptimizationLevel > 3) {
743      Diags.Report(diag::err_drv_invalid_value)
744        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
745      Opts.OptimizationLevel = 3;
746    }
747  }
748
749  // We must always run at least the always inlining pass.
750  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
751    : CodeGenOptions::OnlyAlwaysInlining;
752
753  Opts.DebugInfo = Args.hasArg(OPT_g);
754  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
755  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
756  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
757  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
758  Opts.NoCommon = Args.hasArg(OPT_fno_common);
759  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
760  Opts.OptimizeSize = Args.hasArg(OPT_Os);
761  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
762
763  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
764  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
765  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
766  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
767  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
768  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
769  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
770  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
771  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
772  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
773
774  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
775
776  // FIXME: Put elsewhere?
777#ifdef NDEBUG
778  Opts.VerifyModule = 0;
779#else
780  Opts.VerifyModule = 1;
781#endif
782}
783
784static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
785                                      ArgList &Args) {
786  using namespace cc1options;
787  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
788  Opts.Targets = getAllArgValues(Args, OPT_MT);
789  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
790  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
791}
792
793static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
794                                Diagnostic &Diags) {
795  using namespace cc1options;
796  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
797  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
798  Opts.Pedantic = Args.hasArg(OPT_pedantic);
799  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
800  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
801  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
802  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
803  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
804  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
805  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
806  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
807  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
808  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
809  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
810  Opts.Warnings = getAllArgValues(Args, OPT_W);
811}
812
813static FrontendOptions::InputKind
814ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
815  using namespace cc1options;
816  Opts.ProgramAction = frontend::ParseSyntaxOnly;
817  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
818    switch (A->getOption().getID()) {
819    default:
820      assert(0 && "Invalid option in group!");
821    case OPT_ast_dump:
822      Opts.ProgramAction = frontend::ASTDump; break;
823    case OPT_ast_print:
824      Opts.ProgramAction = frontend::ASTPrint; break;
825    case OPT_ast_print_xml:
826      Opts.ProgramAction = frontend::ASTPrintXML; break;
827    case OPT_ast_view:
828      Opts.ProgramAction = frontend::ASTView; break;
829    case OPT_dump_raw_tokens:
830      Opts.ProgramAction = frontend::DumpRawTokens; break;
831    case OPT_dump_record_layouts:
832      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
833    case OPT_dump_tokens:
834      Opts.ProgramAction = frontend::DumpTokens; break;
835    case OPT_S:
836      Opts.ProgramAction = frontend::EmitAssembly; break;
837    case OPT_emit_llvm_bc:
838      Opts.ProgramAction = frontend::EmitBC; break;
839    case OPT_emit_html:
840      Opts.ProgramAction = frontend::EmitHTML; break;
841    case OPT_emit_llvm:
842      Opts.ProgramAction = frontend::EmitLLVM; break;
843    case OPT_emit_llvm_only:
844      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
845    case OPT_fixit:
846      Opts.ProgramAction = frontend::FixIt; break;
847    case OPT_emit_pch:
848      Opts.ProgramAction = frontend::GeneratePCH; break;
849    case OPT_emit_pth:
850      Opts.ProgramAction = frontend::GeneratePTH; break;
851    case OPT_parse_noop:
852      Opts.ProgramAction = frontend::ParseNoop; break;
853    case OPT_parse_print_callbacks:
854      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
855    case OPT_fsyntax_only:
856      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
857    case OPT_print_decl_contexts:
858      Opts.ProgramAction = frontend::PrintDeclContext; break;
859    case OPT_E:
860      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
861    case OPT_rewrite_blocks:
862      Opts.ProgramAction = frontend::RewriteBlocks; break;
863    case OPT_rewrite_macros:
864      Opts.ProgramAction = frontend::RewriteMacros; break;
865    case OPT_rewrite_objc:
866      Opts.ProgramAction = frontend::RewriteObjC; break;
867    case OPT_rewrite_test:
868      Opts.ProgramAction = frontend::RewriteTest; break;
869    case OPT_analyze:
870      Opts.ProgramAction = frontend::RunAnalysis; break;
871    case OPT_Eonly:
872      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
873    }
874  }
875  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
876    Opts.ProgramAction = frontend::PluginAction;
877    Opts.ActionName = A->getValue(Args);
878  }
879
880  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
881    Opts.CodeCompletionAt =
882      ParsedSourceLocation::FromString(A->getValue(Args));
883    if (Opts.CodeCompletionAt.FileName.empty())
884      Diags.Report(diag::err_drv_invalid_value)
885        << A->getAsString(Args) << A->getValue(Args);
886  }
887  Opts.DebugCodeCompletionPrinter =
888    !Args.hasArg(OPT_no_code_completion_debug_printer);
889  Opts.DisableFree = Args.hasArg(OPT_disable_free);
890  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
891
892  Opts.FixItLocations.clear();
893  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
894         ie = Args.filtered_end(); it != ie; ++it) {
895    const char *Loc = it->getValue(Args);
896    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
897
898    if (PSL.FileName.empty()) {
899      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
900      continue;
901    }
902
903    Opts.FixItLocations.push_back(PSL);
904  }
905
906  Opts.OutputFile = getLastArgValue(Args, OPT_o);
907  Opts.Plugins = getAllArgValues(Args, OPT_load);
908  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
909  Opts.ShowHelp = Args.hasArg(OPT_help);
910  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
911  Opts.ShowStats = Args.hasArg(OPT_print_stats);
912  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
913  Opts.ShowVersion = Args.hasArg(OPT_version);
914  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
915
916  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
917  if (const Arg *A = Args.getLastArg(OPT_x)) {
918    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
919      .Case("c", FrontendOptions::IK_C)
920      .Case("cl", FrontendOptions::IK_OpenCL)
921      .Case("c", FrontendOptions::IK_C)
922      .Case("cl", FrontendOptions::IK_OpenCL)
923      .Case("c++", FrontendOptions::IK_CXX)
924      .Case("objective-c", FrontendOptions::IK_ObjC)
925      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
926      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
927      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
928      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
929      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
930      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
931      .Case("c-header", FrontendOptions::IK_C)
932      .Case("objective-c-header", FrontendOptions::IK_ObjC)
933      .Case("c++-header", FrontendOptions::IK_CXX)
934      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
935      .Case("ast", FrontendOptions::IK_AST)
936      .Default(FrontendOptions::IK_None);
937    if (DashX == FrontendOptions::IK_None)
938      Diags.Report(diag::err_drv_invalid_value)
939        << A->getAsString(Args) << A->getValue(Args);
940  }
941
942  // '-' is the default input if none is given.
943  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
944  Opts.Inputs.clear();
945  if (Inputs.empty())
946    Inputs.push_back("-");
947  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
948    FrontendOptions::InputKind IK = DashX;
949    if (IK == FrontendOptions::IK_None) {
950      IK = FrontendOptions::getInputKindForExtension(
951        llvm::StringRef(Inputs[i]).rsplit('.').second);
952      // FIXME: Remove this hack.
953      if (i == 0)
954        DashX = IK;
955    }
956    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
957  }
958
959  return DashX;
960}
961
962std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
963                                                 void *MainAddr) {
964  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
965
966  if (!P.isEmpty()) {
967    P.eraseComponent();  // Remove /clang from foo/bin/clang
968    P.eraseComponent();  // Remove /bin   from foo/bin
969
970    // Get foo/lib/clang/<version>/include
971    P.appendComponent("lib");
972    P.appendComponent("clang");
973    P.appendComponent(CLANG_VERSION_STRING);
974  }
975
976  return P.str();
977}
978
979static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
980  using namespace cc1options;
981  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
982  Opts.Verbose = Args.hasArg(OPT_v);
983  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
984  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
985  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
986
987  // Add -I... and -F... options in order.
988  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
989         ie = Args.filtered_end(); it != ie; ++it)
990    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
991                 /*IsFramework=*/ it->getOption().matches(OPT_F));
992
993  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
994  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
995  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
996                                             OPT_iwithprefixbefore),
997         ie = Args.filtered_end(); it != ie; ++it) {
998    if (it->getOption().matches(OPT_iprefix))
999      Prefix = it->getValue(Args);
1000    else if (it->getOption().matches(OPT_iwithprefix))
1001      Opts.AddPath(Prefix.str() + it->getValue(Args),
1002                   frontend::System, false, false);
1003    else
1004      Opts.AddPath(Prefix.str() + it->getValue(Args),
1005                   frontend::Angled, false, false);
1006  }
1007
1008  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1009         ie = Args.filtered_end(); it != ie; ++it)
1010    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1011  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1012         ie = Args.filtered_end(); it != ie; ++it)
1013    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1014  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1015         ie = Args.filtered_end(); it != ie; ++it)
1016    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1017
1018  // FIXME: Need options for the various environment variables!
1019}
1020
1021static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1022                          FrontendOptions::InputKind IK,
1023                          Diagnostic &Diags) {
1024  // FIXME: Cleanup per-file based stuff.
1025
1026  // Set some properties which depend soley on the input kind; it would be nice
1027  // to move these to the language standard, and have the driver resolve the
1028  // input kind + language standard.
1029  if (IK == FrontendOptions::IK_Asm) {
1030    Opts.AsmPreprocessor = 1;
1031  } else if (IK == FrontendOptions::IK_ObjC ||
1032             IK == FrontendOptions::IK_ObjCXX ||
1033             IK == FrontendOptions::IK_PreprocessedObjC ||
1034             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1035    Opts.ObjC1 = Opts.ObjC2 = 1;
1036  }
1037
1038  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1039  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1040    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1041#define LANGSTANDARD(id, name, desc, features) \
1042      .Case(name, LangStandard::lang_##id)
1043#include "clang/Frontend/LangStandards.def"
1044      .Default(LangStandard::lang_unspecified);
1045    if (LangStd == LangStandard::lang_unspecified)
1046      Diags.Report(diag::err_drv_invalid_value)
1047        << A->getAsString(Args) << A->getValue(Args);
1048  }
1049
1050  if (LangStd == LangStandard::lang_unspecified) {
1051    // Based on the base language, pick one.
1052    switch (IK) {
1053    case FrontendOptions::IK_None:
1054    case FrontendOptions::IK_AST:
1055      assert(0 && "Invalid input kind!");
1056    case FrontendOptions::IK_OpenCL:
1057      LangStd = LangStandard::lang_opencl;
1058      break;
1059    case FrontendOptions::IK_Asm:
1060    case FrontendOptions::IK_C:
1061    case FrontendOptions::IK_PreprocessedC:
1062    case FrontendOptions::IK_ObjC:
1063    case FrontendOptions::IK_PreprocessedObjC:
1064      LangStd = LangStandard::lang_gnu99;
1065      break;
1066    case FrontendOptions::IK_CXX:
1067    case FrontendOptions::IK_PreprocessedCXX:
1068    case FrontendOptions::IK_ObjCXX:
1069    case FrontendOptions::IK_PreprocessedObjCXX:
1070      LangStd = LangStandard::lang_gnucxx98;
1071      break;
1072    }
1073  }
1074
1075  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1076  Opts.BCPLComment = Std.hasBCPLComments();
1077  Opts.C99 = Std.isC99();
1078  Opts.CPlusPlus = Std.isCPlusPlus();
1079  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1080  Opts.Digraphs = Std.hasDigraphs();
1081  Opts.GNUMode = Std.isGNUMode();
1082  Opts.GNUInline = !Std.isC99();
1083  Opts.HexFloats = Std.hasHexFloats();
1084  Opts.ImplicitInt = Std.hasImplicitInt();
1085
1086  // OpenCL has some additional defaults.
1087  if (LangStd == LangStandard::lang_opencl) {
1088    Opts.OpenCL = 1;
1089    Opts.AltiVec = 1;
1090    Opts.CXXOperatorNames = 1;
1091    Opts.LaxVectorConversions = 1;
1092  }
1093
1094  // OpenCL and C++ both have bool, true, false keywords.
1095  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1096
1097  if (Opts.CPlusPlus)
1098    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1099
1100  if (Args.hasArg(OPT_fobjc_gc_only))
1101    Opts.setGCMode(LangOptions::GCOnly);
1102  else if (Args.hasArg(OPT_fobjc_gc))
1103    Opts.setGCMode(LangOptions::HybridGC);
1104
1105  if (Args.hasArg(OPT_print_ivar_layout))
1106    Opts.ObjCGCBitmapPrint = 1;
1107
1108  if (Args.hasArg(OPT_faltivec))
1109    Opts.AltiVec = 1;
1110
1111  if (Args.hasArg(OPT_pthread))
1112    Opts.POSIXThreads = 1;
1113
1114  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1115                                        "default");
1116  if (Vis == "default")
1117    Opts.setVisibilityMode(LangOptions::Default);
1118  else if (Vis == "hidden")
1119    Opts.setVisibilityMode(LangOptions::Hidden);
1120  else if (Vis == "protected")
1121    Opts.setVisibilityMode(LangOptions::Protected);
1122  else
1123    Diags.Report(diag::err_drv_invalid_value)
1124      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1125
1126  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1127
1128  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1129  // is specified, or -std is set to a conforming mode.
1130  Opts.Trigraphs = !Opts.GNUMode;
1131  if (Args.hasArg(OPT_trigraphs))
1132    Opts.Trigraphs = 1;
1133
1134  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1135                                   OPT_fno_dollars_in_identifiers,
1136                                   !Opts.AsmPreprocessor);
1137  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1138  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1139  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1140  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1141      Opts.LaxVectorConversions = 0;
1142  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1143  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1144  Opts.Blocks = Args.hasArg(OPT_fblocks);
1145  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1146  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1147  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1148  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1149  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1150  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1151  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1152  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1153  Opts.MathErrno = !Args.hasArg(OPT_fno_math_errno);
1154  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1155                                               Diags);
1156  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1157  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1158                                                 OPT_fconstant_string_class);
1159  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1160  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1161  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1162  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1163  Opts.Static = Args.hasArg(OPT_static_define);
1164  Opts.OptimizeSize = 0;
1165
1166  // FIXME: Eliminate this dependency.
1167  unsigned Opt =
1168    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1169  Opts.Optimize = Opt != 0;
1170
1171  // This is the __NO_INLINE__ define, which just depends on things like the
1172  // optimization level and -fno-inline, not actually whether the backend has
1173  // inlining enabled.
1174  //
1175  // FIXME: This is affected by other options (-fno-inline).
1176  Opts.NoInline = !Opt;
1177
1178  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1179  switch (SSP) {
1180  default:
1181    Diags.Report(diag::err_drv_invalid_value)
1182      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1183    break;
1184  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1185  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1186  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1187  }
1188}
1189
1190static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1191                                  Diagnostic &Diags) {
1192  using namespace cc1options;
1193  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1194  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1195  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1196      Opts.TokenCache = A->getValue(Args);
1197  else
1198    Opts.TokenCache = Opts.ImplicitPTHInclude;
1199  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1200
1201  // Add macros from the command line.
1202  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1203         ie = Args.filtered_end(); it != ie; ++it) {
1204    if (it->getOption().matches(OPT_D))
1205      Opts.addMacroDef(it->getValue(Args));
1206    else
1207      Opts.addMacroUndef(it->getValue(Args));
1208  }
1209
1210  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1211
1212  // Add the ordered list of -includes.
1213  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1214                                             OPT_include_pth),
1215         ie = Args.filtered_end(); it != ie; ++it) {
1216    // PCH is handled specially, we need to extra the original include path.
1217    if (it->getOption().matches(OPT_include_pch)) {
1218      std::string OriginalFile =
1219        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1220      if (OriginalFile.empty())
1221        continue;
1222
1223      Opts.Includes.push_back(OriginalFile);
1224    } else
1225      Opts.Includes.push_back(it->getValue(Args));
1226  }
1227
1228  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1229         ie = Args.filtered_end(); it != ie; ++it) {
1230    std::pair<llvm::StringRef,llvm::StringRef> Split =
1231      llvm::StringRef(it->getValue(Args)).split(';');
1232
1233    if (Split.second.empty()) {
1234      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1235      continue;
1236    }
1237
1238    Opts.addRemappedFile(Split.first, Split.second);
1239  }
1240}
1241
1242static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1243                                        ArgList &Args) {
1244  using namespace cc1options;
1245  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1246  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1247  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1248  Opts.ShowComments = Args.hasArg(OPT_C);
1249  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1250}
1251
1252static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1253  using namespace cc1options;
1254  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1255  Opts.CPU = getLastArgValue(Args, OPT_mcpu);
1256  Opts.Triple = getLastArgValue(Args, OPT_triple);
1257  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1258
1259  // Use the host triple if unspecified.
1260  if (Opts.Triple.empty())
1261    Opts.Triple = llvm::sys::getHostTriple();
1262}
1263
1264//
1265
1266void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1267                                        const char **ArgBegin,
1268                                        const char **ArgEnd,
1269                                        Diagnostic &Diags) {
1270  // Parse the arguments.
1271  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1272  unsigned MissingArgIndex, MissingArgCount;
1273  llvm::OwningPtr<InputArgList> Args(
1274    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1275
1276  // Check for missing argument error.
1277  if (MissingArgCount)
1278    Diags.Report(diag::err_drv_missing_argument)
1279      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1280
1281  // Issue errors on unknown arguments.
1282  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1283         ie = Args->filtered_end(); it != ie; ++it)
1284    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1285
1286  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1287  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1288  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1289  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1290  FrontendOptions::InputKind DashX =
1291    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1292  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1293  if (DashX != FrontendOptions::IK_AST)
1294    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1295  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1296  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1297  ParseTargetArgs(Res.getTargetOpts(), *Args);
1298}
1299