CompilerInvocation.cpp revision 205408 
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.CXAAtExit)
158    Res.push_back("-fno-use-cxa-atexit");
159  if (Opts.CXXCtorDtorAliases)
160    Res.push_back("-mconstructor-aliases");
161  if (!Opts.DebugPass.empty()) {
162    Res.push_back("-mdebug-pass");
163    Res.push_back(Opts.DebugPass);
164  }
165  if (Opts.DisableFPElim)
166    Res.push_back("-mdisable-fp-elim");
167  if (!Opts.FloatABI.empty()) {
168    Res.push_back("-mfloat-abi");
169    Res.push_back(Opts.FloatABI);
170  }
171  if (!Opts.LimitFloatPrecision.empty()) {
172    Res.push_back("-mlimit-float-precision");
173    Res.push_back(Opts.LimitFloatPrecision);
174  }
175  if (Opts.NoZeroInitializedInBSS)
176    Res.push_back("-mno-zero-initialized-bss");
177  if (Opts.ObjCLegacyDispatch)
178    Res.push_back("-fobjc-legacy-dispatch");
179  if (Opts.SoftFloat)
180    Res.push_back("-msoft-float");
181  if (Opts.UnwindTables)
182    Res.push_back("-munwind-tables");
183  if (Opts.RelocationModel != "pic") {
184    Res.push_back("-mrelocation-model");
185    Res.push_back(Opts.RelocationModel);
186  }
187  if (!Opts.VerifyModule)
188    Res.push_back("-disable-llvm-verifier");
189}
190
191static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
192                                       std::vector<std::string> &Res) {
193  if (Opts.IncludeSystemHeaders)
194    Res.push_back("-sys-header-deps");
195  if (Opts.UsePhonyTargets)
196    Res.push_back("-MP");
197  if (!Opts.OutputFile.empty()) {
198    Res.push_back("-dependency-file");
199    Res.push_back(Opts.OutputFile);
200  }
201  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
202    Res.push_back("-MT");
203    Res.push_back(Opts.Targets[i]);
204  }
205}
206
207static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
208                                 std::vector<std::string> &Res) {
209  if (Opts.IgnoreWarnings)
210    Res.push_back("-w");
211  if (Opts.NoRewriteMacros)
212    Res.push_back("-Wno-rewrite-macros");
213  if (Opts.Pedantic)
214    Res.push_back("-pedantic");
215  if (Opts.PedanticErrors)
216    Res.push_back("-pedantic-errors");
217  if (!Opts.ShowColumn)
218    Res.push_back("-fno-show-column");
219  if (!Opts.ShowLocation)
220    Res.push_back("-fno-show-source-location");
221  if (!Opts.ShowCarets)
222    Res.push_back("-fno-caret-diagnostics");
223  if (!Opts.ShowFixits)
224    Res.push_back("-fno-diagnostics-fixit-info");
225  if (Opts.ShowSourceRanges)
226    Res.push_back("-fdiagnostics-print-source-range-info");
227  if (Opts.ShowColors)
228    Res.push_back("-fcolor-diagnostics");
229  if (Opts.VerifyDiagnostics)
230    Res.push_back("-verify");
231  if (Opts.BinaryOutput)
232    Res.push_back("-fdiagnostics-binary");
233  if (Opts.ShowOptionNames)
234    Res.push_back("-fdiagnostics-show-option");
235  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
236    Res.push_back("-ftabstop");
237    Res.push_back(llvm::utostr(Opts.TabStop));
238  }
239  if (Opts.MessageLength) {
240    Res.push_back("-fmessage-length");
241    Res.push_back(llvm::utostr(Opts.MessageLength));
242  }
243  if (!Opts.DumpBuildInformation.empty()) {
244    Res.push_back("-dump-build-information");
245    Res.push_back(Opts.DumpBuildInformation);
246  }
247  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
248    Res.push_back("-W" + Opts.Warnings[i]);
249}
250
251static const char *getInputKindName(FrontendOptions::InputKind Kind) {
252  switch (Kind) {
253  case FrontendOptions::IK_None:              break;
254  case FrontendOptions::IK_AST:               return "ast";
255  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
256  case FrontendOptions::IK_C:                 return "c";
257  case FrontendOptions::IK_CXX:               return "c++";
258  case FrontendOptions::IK_ObjC:              return "objective-c";
259  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
260  case FrontendOptions::IK_OpenCL:            return "cl";
261  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
262  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
263  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
264  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
265  }
266
267  llvm_unreachable("Unexpected language kind!");
268  return 0;
269}
270
271static const char *getActionName(frontend::ActionKind Kind) {
272  switch (Kind) {
273  case frontend::PluginAction:
274  case frontend::InheritanceView:
275    llvm_unreachable("Invalid kind!");
276
277  case frontend::ASTDump:                return "-ast-dump";
278  case frontend::ASTPrint:               return "-ast-print";
279  case frontend::ASTPrintXML:            return "-ast-print-xml";
280  case frontend::ASTView:                return "-ast-view";
281  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
282  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
283  case frontend::DumpTokens:             return "-dump-tokens";
284  case frontend::EmitAssembly:           return "-S";
285  case frontend::EmitBC:                 return "-emit-llvm-bc";
286  case frontend::EmitHTML:               return "-emit-html";
287  case frontend::EmitLLVM:               return "-emit-llvm";
288  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
289  case frontend::EmitObj:                return "-emit-obj";
290  case frontend::FixIt:                  return "-fixit";
291  case frontend::GeneratePCH:            return "-emit-pch";
292  case frontend::GeneratePTH:            return "-emit-pth";
293  case frontend::InitOnly:               return "-init-only";
294  case frontend::ParseNoop:              return "-parse-noop";
295  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
296  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
297  case frontend::PrintDeclContext:       return "-print-decl-contexts";
298  case frontend::PrintPreprocessedInput: return "-E";
299  case frontend::RewriteMacros:          return "-rewrite-macros";
300  case frontend::RewriteObjC:            return "-rewrite-objc";
301  case frontend::RewriteTest:            return "-rewrite-test";
302  case frontend::RunAnalysis:            return "-analyze";
303  case frontend::RunPreprocessorOnly:    return "-Eonly";
304  }
305
306  llvm_unreachable("Unexpected language kind!");
307  return 0;
308}
309
310static void FrontendOptsToArgs(const FrontendOptions &Opts,
311                               std::vector<std::string> &Res) {
312  if (!Opts.DebugCodeCompletionPrinter)
313    Res.push_back("-no-code-completion-debug-printer");
314  if (Opts.DisableFree)
315    Res.push_back("-disable-free");
316  if (Opts.RelocatablePCH)
317    Res.push_back("-relocatable-pch");
318  if (Opts.ShowHelp)
319    Res.push_back("-help");
320  if (Opts.ShowMacrosInCodeCompletion)
321    Res.push_back("-code-completion-macros");
322  if (Opts.ShowStats)
323    Res.push_back("-print-stats");
324  if (Opts.ShowTimers)
325    Res.push_back("-ftime-report");
326  if (Opts.ShowVersion)
327    Res.push_back("-version");
328
329  bool NeedLang = false;
330  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
331    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
332        Opts.Inputs[i].first)
333      NeedLang = true;
334  if (NeedLang) {
335    Res.push_back("-x");
336    Res.push_back(getInputKindName(Opts.Inputs[0].first));
337  }
338  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
339    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
340           "Unable to represent this input vector!");
341    Res.push_back(Opts.Inputs[i].second);
342  }
343
344  if (!Opts.OutputFile.empty()) {
345    Res.push_back("-o");
346    Res.push_back(Opts.OutputFile);
347  }
348  if (!Opts.ViewClassInheritance.empty()) {
349    Res.push_back("-cxx-inheritance-view");
350    Res.push_back(Opts.ViewClassInheritance);
351  }
352  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
353    Res.push_back("-fixit-at");
354    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
355                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
356                  llvm::utostr(Opts.FixItLocations[i].Column));
357  }
358  if (!Opts.CodeCompletionAt.FileName.empty()) {
359    Res.push_back("-code-completion-at");
360    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
361                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
362                  llvm::utostr(Opts.CodeCompletionAt.Column));
363  }
364  if (Opts.ProgramAction != frontend::InheritanceView &&
365      Opts.ProgramAction != frontend::PluginAction)
366    Res.push_back(getActionName(Opts.ProgramAction));
367  if (!Opts.ActionName.empty()) {
368    Res.push_back("-plugin");
369    Res.push_back(Opts.ActionName);
370  }
371  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
372    Res.push_back("-load");
373    Res.push_back(Opts.Plugins[i]);
374  }
375  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
376    Res.push_back("-ast-merge");
377    Res.push_back(Opts.ASTMergeFiles[i]);
378  }
379}
380
381static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
382                                   std::vector<std::string> &Res) {
383  if (Opts.Sysroot != "/") {
384    Res.push_back("-isysroot");
385    Res.push_back(Opts.Sysroot);
386  }
387
388  /// User specified include entries.
389  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
390    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
391    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
392      llvm::llvm_report_error("Invalid option set!");
393    if (E.IsUserSupplied) {
394      if (E.Group == frontend::After) {
395        Res.push_back("-idirafter");
396      } else if (E.Group == frontend::Quoted) {
397        Res.push_back("-iquote");
398      } else if (E.Group == frontend::System) {
399        Res.push_back("-isystem");
400      } else {
401        assert(E.Group == frontend::Angled && "Invalid group!");
402        Res.push_back(E.IsFramework ? "-F" : "-I");
403      }
404    } else {
405      if (E.Group != frontend::Angled && E.Group != frontend::System)
406        llvm::llvm_report_error("Invalid option set!");
407      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
408                    "-iwithprefix");
409    }
410    Res.push_back(E.Path);
411  }
412
413  if (!Opts.EnvIncPath.empty()) {
414    // FIXME: Provide an option for this, and move env detection to driver.
415    llvm::llvm_report_error("Not yet implemented!");
416  }
417  if (!Opts.CEnvIncPath.empty()) {
418    // FIXME: Provide an option for this, and move env detection to driver.
419    llvm::llvm_report_error("Not yet implemented!");
420  }
421  if (!Opts.ObjCEnvIncPath.empty()) {
422    // FIXME: Provide an option for this, and move env detection to driver.
423    llvm::llvm_report_error("Not yet implemented!");
424  }
425  if (!Opts.CXXEnvIncPath.empty()) {
426    // FIXME: Provide an option for this, and move env detection to driver.
427    llvm::llvm_report_error("Not yet implemented!");
428  }
429  if (!Opts.ObjCXXEnvIncPath.empty()) {
430    // FIXME: Provide an option for this, and move env detection to driver.
431    llvm::llvm_report_error("Not yet implemented!");
432  }
433  if (!Opts.ResourceDir.empty()) {
434    Res.push_back("-resource-dir");
435    Res.push_back(Opts.ResourceDir);
436  }
437  if (!Opts.UseStandardIncludes)
438    Res.push_back("-nostdinc");
439  if (Opts.Verbose)
440    Res.push_back("-v");
441}
442
443static void LangOptsToArgs(const LangOptions &Opts,
444                           std::vector<std::string> &Res) {
445  LangOptions DefaultLangOpts;
446
447  // FIXME: Need to set -std to get all the implicit options.
448
449  // FIXME: We want to only pass options relative to the defaults, which
450  // requires constructing a target. :(
451  //
452  // It would be better to push the all target specific choices into the driver,
453  // so that everything below that was more uniform.
454
455  if (Opts.Trigraphs)
456    Res.push_back("-trigraphs");
457  // Implicit based on the input kind:
458  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
459  // Implicit based on the input language standard:
460  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
461  if (Opts.DollarIdents)
462    Res.push_back("-fdollars-in-identifiers");
463  if (Opts.Microsoft)
464    Res.push_back("-fms-extensions");
465  if (Opts.ObjCNonFragileABI)
466    Res.push_back("-fobjc-nonfragile-abi");
467  if (Opts.ObjCNonFragileABI2)
468    Res.push_back("-fobjc-nonfragile-abi2");
469  // NoInline is implicit.
470  if (!Opts.CXXOperatorNames)
471    Res.push_back("-fno-operator-names");
472  if (Opts.PascalStrings)
473    Res.push_back("-fpascal-strings");
474  if (Opts.CatchUndefined)
475    Res.push_back("-fcatch-undefined-behavior");
476  if (Opts.WritableStrings)
477    Res.push_back("-fwritable-strings");
478  if (Opts.ConstStrings)
479    Res.push_back("-Wwrite-strings");
480  if (!Opts.LaxVectorConversions)
481    Res.push_back("-fno-lax-vector-conversions");
482  if (Opts.AltiVec)
483    Res.push_back("-faltivec");
484  if (Opts.Exceptions)
485    Res.push_back("-fexceptions");
486  if (Opts.SjLjExceptions)
487    Res.push_back("-fsjlj-exceptions");
488  if (!Opts.RTTI)
489    Res.push_back("-fno-rtti");
490  if (!Opts.NeXTRuntime)
491    Res.push_back("-fgnu-runtime");
492  if (Opts.Freestanding)
493    Res.push_back("-ffreestanding");
494  if (Opts.NoBuiltin)
495    Res.push_back("-fno-builtin");
496  if (!Opts.AssumeSaneOperatorNew)
497    Res.push_back("-fno-assume-sane-operator-new");
498  if (!Opts.ThreadsafeStatics)
499    Res.push_back("-fno-threadsafe-statics");
500  if (Opts.POSIXThreads)
501    Res.push_back("-pthread");
502  if (Opts.Blocks)
503    Res.push_back("-fblocks");
504  if (Opts.EmitAllDecls)
505    Res.push_back("-femit-all-decls");
506  if (Opts.MathErrno)
507    Res.push_back("-fmath-errno");
508  if (Opts.OverflowChecking)
509    Res.push_back("-ftrapv");
510  if (Opts.HeinousExtensions)
511    Res.push_back("-fheinous-gnu-extensions");
512  // Optimize is implicit.
513  // OptimizeSize is implicit.
514  if (Opts.Static)
515    Res.push_back("-static-define");
516  if (Opts.PICLevel) {
517    Res.push_back("-pic-level");
518    Res.push_back(llvm::utostr(Opts.PICLevel));
519  }
520  if (Opts.ObjCGCBitmapPrint)
521    Res.push_back("-print-ivar-layout");
522  // FIXME: Don't forget to update when the default changes!
523  if (Opts.AccessControl)
524    Res.push_back("-faccess-control");
525  if (!Opts.CharIsSigned)
526    Res.push_back("-fno-signed-char");
527  if (Opts.ShortWChar)
528    Res.push_back("-fshort-wchar");
529  if (!Opts.ElideConstructors)
530    Res.push_back("-fno-elide-constructors");
531  if (Opts.getGCMode() != LangOptions::NonGC) {
532    if (Opts.getGCMode() == LangOptions::HybridGC) {
533      Res.push_back("-fobjc-gc");
534    } else {
535      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
536      Res.push_back("-fobjc-gc-only");
537    }
538  }
539  if (Opts.getVisibilityMode() != LangOptions::Default) {
540    Res.push_back("-fvisibility");
541    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
542      Res.push_back("hidden");
543    } else {
544      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
545             "Invalid visibility!");
546      Res.push_back("protected");
547    }
548  }
549  if (Opts.getStackProtectorMode() != 0) {
550    Res.push_back("-stack-protector");
551    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
552  }
553  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
554    Res.push_back("-ftemplate-depth");
555    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
556  }
557  if (!Opts.ObjCConstantStringClass.empty()) {
558    Res.push_back("-fconstant-string-class");
559    Res.push_back(Opts.ObjCConstantStringClass);
560  }
561}
562
563static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
564                                   std::vector<std::string> &Res) {
565  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
566    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
567                  Opts.Macros[i].first);
568  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
569    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
570    Res.push_back("-include");
571    Res.push_back(Opts.Includes[i]);
572  }
573  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
574    Res.push_back("-imacros");
575    Res.push_back(Opts.MacroIncludes[i]);
576  }
577  if (!Opts.UsePredefines)
578    Res.push_back("-undef");
579  if (Opts.DetailedRecord)
580    Res.push_back("-detailed-preprocessing-record");
581  if (!Opts.ImplicitPCHInclude.empty()) {
582    Res.push_back("-include-pch");
583    Res.push_back(Opts.ImplicitPCHInclude);
584  }
585  if (!Opts.ImplicitPTHInclude.empty()) {
586    Res.push_back("-include-pth");
587    Res.push_back(Opts.ImplicitPTHInclude);
588  }
589  if (!Opts.TokenCache.empty()) {
590    if (Opts.ImplicitPTHInclude.empty()) {
591      Res.push_back("-token-cache");
592      Res.push_back(Opts.TokenCache);
593    } else
594      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
595             "Unsupported option combination!");
596  }
597  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
598    Res.push_back("-remap-file");
599    Res.push_back(Opts.RemappedFiles[i].first + ";" +
600                  Opts.RemappedFiles[i].second);
601  }
602}
603
604static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
605                                         std::vector<std::string> &Res) {
606  if (!Opts.ShowCPP && !Opts.ShowMacros)
607    llvm::llvm_report_error("Invalid option combination!");
608
609  if (Opts.ShowCPP && Opts.ShowMacros)
610    Res.push_back("-dD");
611  else if (!Opts.ShowCPP && Opts.ShowMacros)
612    Res.push_back("-dM");
613
614  if (!Opts.ShowLineMarkers)
615    Res.push_back("-P");
616  if (Opts.ShowComments)
617    Res.push_back("-C");
618  if (Opts.ShowMacroComments)
619    Res.push_back("-CC");
620}
621
622static void TargetOptsToArgs(const TargetOptions &Opts,
623                             std::vector<std::string> &Res) {
624  Res.push_back("-triple");
625  Res.push_back(Opts.Triple);
626  if (!Opts.CPU.empty()) {
627    Res.push_back("-target-cpu");
628    Res.push_back(Opts.CPU);
629  }
630  if (!Opts.ABI.empty()) {
631    Res.push_back("-target-abi");
632    Res.push_back(Opts.ABI);
633  }
634  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
635    Res.push_back("-target-feature");
636    Res.push_back(Opts.Features[i]);
637  }
638}
639
640void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
641  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
642  CodeGenOptsToArgs(getCodeGenOpts(), Res);
643  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
644  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
645  FrontendOptsToArgs(getFrontendOpts(), Res);
646  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
647  LangOptsToArgs(getLangOpts(), Res);
648  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
649  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
650  TargetOptsToArgs(getTargetOpts(), Res);
651}
652
653//===----------------------------------------------------------------------===//
654// Deserialization (to args)
655//===----------------------------------------------------------------------===//
656
657using namespace clang::driver;
658using namespace clang::driver::cc1options;
659
660static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
661                                       llvm::StringRef Default = "") {
662  if (Arg *A = Args.getLastArg(ID))
663    return A->getValue(Args);
664  return Default;
665}
666
667static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
668                              int Default, Diagnostic &Diags) {
669  Arg *A = Args.getLastArg(ID);
670  if (!A)
671    return Default;
672
673  int Res = Default;
674  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
675    Diags.Report(diag::err_drv_invalid_int_value)
676        << A->getAsString(Args) << A->getValue(Args);
677
678  return Res;
679}
680
681static std::vector<std::string>
682getAllArgValues(ArgList &Args, cc1options::ID ID) {
683  llvm::SmallVector<const char *, 16> Values;
684  Args.AddAllArgValues(Values, ID);
685  return std::vector<std::string>(Values.begin(), Values.end());
686}
687
688//
689
690static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
691                              Diagnostic &Diags) {
692  using namespace cc1options;
693
694  Opts.AnalysisList.clear();
695#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
696  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
697#include "clang/Frontend/Analyses.def"
698
699  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
700    llvm::StringRef Name = A->getValue(Args);
701    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
702#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
703      .Case(CMDFLAG, NAME##Model)
704#include "clang/Frontend/Analyses.def"
705      .Default(NumStores);
706    // FIXME: Error handling.
707    if (Value == NumStores)
708      Diags.Report(diag::err_drv_invalid_value)
709        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
710    else
711      Opts.AnalysisStoreOpt = Value;
712  }
713
714  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
715    llvm::StringRef Name = A->getValue(Args);
716    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
717#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
718      .Case(CMDFLAG, NAME##Model)
719#include "clang/Frontend/Analyses.def"
720      .Default(NumConstraints);
721    // FIXME: Error handling.
722    if (Value == NumConstraints)
723      Diags.Report(diag::err_drv_invalid_value)
724        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
725    else
726      Opts.AnalysisConstraintsOpt = Value;
727  }
728
729  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
730    llvm::StringRef Name = A->getValue(Args);
731    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
732#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
733      .Case(CMDFLAG, PD_##NAME)
734#include "clang/Frontend/Analyses.def"
735      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
736    // FIXME: Error handling.
737    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
738      Diags.Report(diag::err_drv_invalid_value)
739        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
740    else
741      Opts.AnalysisDiagOpt = Value;
742  }
743
744  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
745  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
746  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
747  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
748  Opts.AnalyzeNestedBlocks =
749    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
750  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
751  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
752  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
753  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
754  Opts.EnableExperimentalInternalChecks =
755    Args.hasArg(OPT_analyzer_experimental_internal_checks);
756  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
757}
758
759static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
760                             Diagnostic &Diags) {
761  using namespace cc1options;
762  // -Os implies -O2
763  if (Args.hasArg(OPT_Os))
764    Opts.OptimizationLevel = 2;
765  else {
766    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
767    if (Opts.OptimizationLevel > 3) {
768      Diags.Report(diag::err_drv_invalid_value)
769        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
770      Opts.OptimizationLevel = 3;
771    }
772  }
773
774  // We must always run at least the always inlining pass.
775  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
776    : CodeGenOptions::OnlyAlwaysInlining;
777
778  Opts.DebugInfo = Args.hasArg(OPT_g);
779  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
780  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
781  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
782  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
783  Opts.NoCommon = Args.hasArg(OPT_fno_common);
784  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
785  Opts.OptimizeSize = Args.hasArg(OPT_Os);
786  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
787
788  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
789  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
790  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
791  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
792  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
793  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
794  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
795  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
796  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
797  Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
798  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
799  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
800  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
801
802  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
803  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
804}
805
806static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
807                                      ArgList &Args) {
808  using namespace cc1options;
809  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
810  Opts.Targets = getAllArgValues(Args, OPT_MT);
811  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
812  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
813}
814
815static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
816                                Diagnostic &Diags) {
817  using namespace cc1options;
818  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
819  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
820  Opts.Pedantic = Args.hasArg(OPT_pedantic);
821  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
822  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
823  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
824  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
825  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
826  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
827  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
828  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
829  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
830  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
831  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
832                                    DiagnosticOptions::DefaultTabStop, Diags);
833  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
834    Diags.Report(diag::warn_ignoring_ftabstop_value)
835      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
836    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
837  }
838  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
839  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
840  Opts.Warnings = getAllArgValues(Args, OPT_W);
841}
842
843static FrontendOptions::InputKind
844ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
845  using namespace cc1options;
846  Opts.ProgramAction = frontend::ParseSyntaxOnly;
847  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
848    switch (A->getOption().getID()) {
849    default:
850      assert(0 && "Invalid option in group!");
851    case OPT_ast_dump:
852      Opts.ProgramAction = frontend::ASTDump; break;
853    case OPT_ast_print:
854      Opts.ProgramAction = frontend::ASTPrint; break;
855    case OPT_ast_print_xml:
856      Opts.ProgramAction = frontend::ASTPrintXML; break;
857    case OPT_ast_view:
858      Opts.ProgramAction = frontend::ASTView; break;
859    case OPT_dump_raw_tokens:
860      Opts.ProgramAction = frontend::DumpRawTokens; break;
861    case OPT_dump_record_layouts:
862      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
863    case OPT_dump_tokens:
864      Opts.ProgramAction = frontend::DumpTokens; break;
865    case OPT_S:
866      Opts.ProgramAction = frontend::EmitAssembly; break;
867    case OPT_emit_llvm_bc:
868      Opts.ProgramAction = frontend::EmitBC; break;
869    case OPT_emit_html:
870      Opts.ProgramAction = frontend::EmitHTML; break;
871    case OPT_emit_llvm:
872      Opts.ProgramAction = frontend::EmitLLVM; break;
873    case OPT_emit_llvm_only:
874      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
875    case OPT_emit_obj:
876      Opts.ProgramAction = frontend::EmitObj; break;
877    case OPT_fixit:
878      Opts.ProgramAction = frontend::FixIt; break;
879    case OPT_emit_pch:
880      Opts.ProgramAction = frontend::GeneratePCH; break;
881    case OPT_emit_pth:
882      Opts.ProgramAction = frontend::GeneratePTH; break;
883    case OPT_init_only:
884      Opts.ProgramAction = frontend::InitOnly; break;
885    case OPT_parse_noop:
886      Opts.ProgramAction = frontend::ParseNoop; break;
887    case OPT_parse_print_callbacks:
888      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
889    case OPT_fsyntax_only:
890      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
891    case OPT_print_decl_contexts:
892      Opts.ProgramAction = frontend::PrintDeclContext; break;
893    case OPT_E:
894      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
895    case OPT_rewrite_macros:
896      Opts.ProgramAction = frontend::RewriteMacros; break;
897    case OPT_rewrite_objc:
898      Opts.ProgramAction = frontend::RewriteObjC; break;
899    case OPT_rewrite_test:
900      Opts.ProgramAction = frontend::RewriteTest; break;
901    case OPT_analyze:
902      Opts.ProgramAction = frontend::RunAnalysis; break;
903    case OPT_Eonly:
904      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
905    }
906  }
907  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
908    Opts.ProgramAction = frontend::PluginAction;
909    Opts.ActionName = A->getValue(Args);
910  }
911
912  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
913    Opts.CodeCompletionAt =
914      ParsedSourceLocation::FromString(A->getValue(Args));
915    if (Opts.CodeCompletionAt.FileName.empty())
916      Diags.Report(diag::err_drv_invalid_value)
917        << A->getAsString(Args) << A->getValue(Args);
918  }
919  Opts.DebugCodeCompletionPrinter =
920    !Args.hasArg(OPT_no_code_completion_debug_printer);
921  Opts.DisableFree = Args.hasArg(OPT_disable_free);
922
923  Opts.FixItLocations.clear();
924  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
925         ie = Args.filtered_end(); it != ie; ++it) {
926    const char *Loc = it->getValue(Args);
927    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
928
929    if (PSL.FileName.empty()) {
930      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
931      continue;
932    }
933
934    Opts.FixItLocations.push_back(PSL);
935  }
936
937  Opts.OutputFile = getLastArgValue(Args, OPT_o);
938  Opts.Plugins = getAllArgValues(Args, OPT_load);
939  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
940  Opts.ShowHelp = Args.hasArg(OPT_help);
941  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
942  Opts.ShowStats = Args.hasArg(OPT_print_stats);
943  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
944  Opts.ShowVersion = Args.hasArg(OPT_version);
945  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
946  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
947
948  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
949  if (const Arg *A = Args.getLastArg(OPT_x)) {
950    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
951      .Case("c", FrontendOptions::IK_C)
952      .Case("cl", FrontendOptions::IK_OpenCL)
953      .Case("c", FrontendOptions::IK_C)
954      .Case("cl", FrontendOptions::IK_OpenCL)
955      .Case("c++", FrontendOptions::IK_CXX)
956      .Case("objective-c", FrontendOptions::IK_ObjC)
957      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
958      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
959      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
960      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
961      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
962      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
963      .Case("c-header", FrontendOptions::IK_C)
964      .Case("objective-c-header", FrontendOptions::IK_ObjC)
965      .Case("c++-header", FrontendOptions::IK_CXX)
966      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
967      .Case("ast", FrontendOptions::IK_AST)
968      .Default(FrontendOptions::IK_None);
969    if (DashX == FrontendOptions::IK_None)
970      Diags.Report(diag::err_drv_invalid_value)
971        << A->getAsString(Args) << A->getValue(Args);
972  }
973
974  // '-' is the default input if none is given.
975  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
976  Opts.Inputs.clear();
977  if (Inputs.empty())
978    Inputs.push_back("-");
979  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
980    FrontendOptions::InputKind IK = DashX;
981    if (IK == FrontendOptions::IK_None) {
982      IK = FrontendOptions::getInputKindForExtension(
983        llvm::StringRef(Inputs[i]).rsplit('.').second);
984      // FIXME: Remove this hack.
985      if (i == 0)
986        DashX = IK;
987    }
988    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
989  }
990
991  return DashX;
992}
993
994std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
995                                                 void *MainAddr) {
996  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
997
998  if (!P.isEmpty()) {
999    P.eraseComponent();  // Remove /clang from foo/bin/clang
1000    P.eraseComponent();  // Remove /bin   from foo/bin
1001
1002    // Get foo/lib/clang/<version>/include
1003    P.appendComponent("lib");
1004    P.appendComponent("clang");
1005    P.appendComponent(CLANG_VERSION_STRING);
1006  }
1007
1008  return P.str();
1009}
1010
1011static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1012  using namespace cc1options;
1013  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1014  Opts.Verbose = Args.hasArg(OPT_v);
1015  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1016  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1017  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1018
1019  // Add -I... and -F... options in order.
1020  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1021         ie = Args.filtered_end(); it != ie; ++it)
1022    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1023                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1024
1025  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1026  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1027  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1028                                             OPT_iwithprefixbefore),
1029         ie = Args.filtered_end(); it != ie; ++it) {
1030    if (it->getOption().matches(OPT_iprefix))
1031      Prefix = it->getValue(Args);
1032    else if (it->getOption().matches(OPT_iwithprefix))
1033      Opts.AddPath(Prefix.str() + it->getValue(Args),
1034                   frontend::System, false, false);
1035    else
1036      Opts.AddPath(Prefix.str() + it->getValue(Args),
1037                   frontend::Angled, false, false);
1038  }
1039
1040  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1041         ie = Args.filtered_end(); it != ie; ++it)
1042    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1043  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1044         ie = Args.filtered_end(); it != ie; ++it)
1045    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1046  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1047         ie = Args.filtered_end(); it != ie; ++it)
1048    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1049
1050  // FIXME: Need options for the various environment variables!
1051}
1052
1053static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1054                          FrontendOptions::InputKind IK,
1055                          Diagnostic &Diags) {
1056  // FIXME: Cleanup per-file based stuff.
1057
1058  // Set some properties which depend soley on the input kind; it would be nice
1059  // to move these to the language standard, and have the driver resolve the
1060  // input kind + language standard.
1061  if (IK == FrontendOptions::IK_Asm) {
1062    Opts.AsmPreprocessor = 1;
1063  } else if (IK == FrontendOptions::IK_ObjC ||
1064             IK == FrontendOptions::IK_ObjCXX ||
1065             IK == FrontendOptions::IK_PreprocessedObjC ||
1066             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1067    Opts.ObjC1 = Opts.ObjC2 = 1;
1068  }
1069
1070  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1071  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1072    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1073#define LANGSTANDARD(id, name, desc, features) \
1074      .Case(name, LangStandard::lang_##id)
1075#include "clang/Frontend/LangStandards.def"
1076      .Default(LangStandard::lang_unspecified);
1077    if (LangStd == LangStandard::lang_unspecified)
1078      Diags.Report(diag::err_drv_invalid_value)
1079        << A->getAsString(Args) << A->getValue(Args);
1080  }
1081
1082  if (LangStd == LangStandard::lang_unspecified) {
1083    // Based on the base language, pick one.
1084    switch (IK) {
1085    case FrontendOptions::IK_None:
1086    case FrontendOptions::IK_AST:
1087      assert(0 && "Invalid input kind!");
1088    case FrontendOptions::IK_OpenCL:
1089      LangStd = LangStandard::lang_opencl;
1090      break;
1091    case FrontendOptions::IK_Asm:
1092    case FrontendOptions::IK_C:
1093    case FrontendOptions::IK_PreprocessedC:
1094    case FrontendOptions::IK_ObjC:
1095    case FrontendOptions::IK_PreprocessedObjC:
1096      LangStd = LangStandard::lang_gnu99;
1097      break;
1098    case FrontendOptions::IK_CXX:
1099    case FrontendOptions::IK_PreprocessedCXX:
1100    case FrontendOptions::IK_ObjCXX:
1101    case FrontendOptions::IK_PreprocessedObjCXX:
1102      LangStd = LangStandard::lang_gnucxx98;
1103      break;
1104    }
1105  }
1106
1107  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1108  Opts.BCPLComment = Std.hasBCPLComments();
1109  Opts.C99 = Std.isC99();
1110  Opts.CPlusPlus = Std.isCPlusPlus();
1111  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1112  Opts.Digraphs = Std.hasDigraphs();
1113  Opts.GNUMode = Std.isGNUMode();
1114  Opts.GNUInline = !Std.isC99();
1115  Opts.HexFloats = Std.hasHexFloats();
1116  Opts.ImplicitInt = Std.hasImplicitInt();
1117
1118  // OpenCL has some additional defaults.
1119  if (LangStd == LangStandard::lang_opencl) {
1120    Opts.OpenCL = 1;
1121    Opts.AltiVec = 1;
1122    Opts.CXXOperatorNames = 1;
1123    Opts.LaxVectorConversions = 1;
1124  }
1125
1126  // OpenCL and C++ both have bool, true, false keywords.
1127  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1128
1129  if (Opts.CPlusPlus)
1130    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1131
1132  if (Args.hasArg(OPT_fobjc_gc_only))
1133    Opts.setGCMode(LangOptions::GCOnly);
1134  else if (Args.hasArg(OPT_fobjc_gc))
1135    Opts.setGCMode(LangOptions::HybridGC);
1136
1137  if (Args.hasArg(OPT_print_ivar_layout))
1138    Opts.ObjCGCBitmapPrint = 1;
1139
1140  if (Args.hasArg(OPT_faltivec))
1141    Opts.AltiVec = 1;
1142
1143  if (Args.hasArg(OPT_pthread))
1144    Opts.POSIXThreads = 1;
1145
1146  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1147                                        "default");
1148  if (Vis == "default")
1149    Opts.setVisibilityMode(LangOptions::Default);
1150  else if (Vis == "hidden")
1151    Opts.setVisibilityMode(LangOptions::Hidden);
1152  else if (Vis == "protected")
1153    Opts.setVisibilityMode(LangOptions::Protected);
1154  else
1155    Diags.Report(diag::err_drv_invalid_value)
1156      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1157
1158  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1159
1160  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1161  // is specified, or -std is set to a conforming mode.
1162  Opts.Trigraphs = !Opts.GNUMode;
1163  if (Args.hasArg(OPT_trigraphs))
1164    Opts.Trigraphs = 1;
1165
1166  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1167                                   OPT_fno_dollars_in_identifiers,
1168                                   !Opts.AsmPreprocessor);
1169  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1170  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1171  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1172  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1173  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1174    Opts.LaxVectorConversions = 0;
1175  if (Args.hasArg(OPT_fno_threadsafe_statics))
1176    Opts.ThreadsafeStatics = 0;
1177  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1178  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1179  Opts.Blocks = Args.hasArg(OPT_fblocks);
1180  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1181  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1182  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1183  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1184  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1185  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1186  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1187  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1188  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1189  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1190                                               Diags);
1191  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1192  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1193                                                 OPT_fconstant_string_class);
1194  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1195  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1196  if (Opts.ObjCNonFragileABI2)
1197    Opts.ObjCNonFragileABI = true;
1198  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1199  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1200  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1201  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1202  Opts.Static = Args.hasArg(OPT_static_define);
1203  Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1204  Opts.OptimizeSize = 0;
1205
1206  // FIXME: Eliminate this dependency.
1207  unsigned Opt =
1208    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1209  Opts.Optimize = Opt != 0;
1210
1211  // This is the __NO_INLINE__ define, which just depends on things like the
1212  // optimization level and -fno-inline, not actually whether the backend has
1213  // inlining enabled.
1214  //
1215  // FIXME: This is affected by other options (-fno-inline).
1216  Opts.NoInline = !Opt;
1217
1218  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1219  switch (SSP) {
1220  default:
1221    Diags.Report(diag::err_drv_invalid_value)
1222      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1223    break;
1224  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1225  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1226  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1227  }
1228}
1229
1230static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1231                                  Diagnostic &Diags) {
1232  using namespace cc1options;
1233  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1234  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1235  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1236      Opts.TokenCache = A->getValue(Args);
1237  else
1238    Opts.TokenCache = Opts.ImplicitPTHInclude;
1239  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1240  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1241  // Add macros from the command line.
1242  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1243         ie = Args.filtered_end(); it != ie; ++it) {
1244    if (it->getOption().matches(OPT_D))
1245      Opts.addMacroDef(it->getValue(Args));
1246    else
1247      Opts.addMacroUndef(it->getValue(Args));
1248  }
1249
1250  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1251
1252  // Add the ordered list of -includes.
1253  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1254                                             OPT_include_pth),
1255         ie = Args.filtered_end(); it != ie; ++it) {
1256    // PCH is handled specially, we need to extra the original include path.
1257    if (it->getOption().matches(OPT_include_pch)) {
1258      std::string OriginalFile =
1259        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1260      if (OriginalFile.empty())
1261        continue;
1262
1263      Opts.Includes.push_back(OriginalFile);
1264    } else
1265      Opts.Includes.push_back(it->getValue(Args));
1266  }
1267
1268  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1269         ie = Args.filtered_end(); it != ie; ++it) {
1270    std::pair<llvm::StringRef,llvm::StringRef> Split =
1271      llvm::StringRef(it->getValue(Args)).split(';');
1272
1273    if (Split.second.empty()) {
1274      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1275      continue;
1276    }
1277
1278    Opts.addRemappedFile(Split.first, Split.second);
1279  }
1280}
1281
1282static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1283                                        ArgList &Args) {
1284  using namespace cc1options;
1285  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1286  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1287  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1288  Opts.ShowComments = Args.hasArg(OPT_C);
1289  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1290}
1291
1292static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1293  using namespace cc1options;
1294  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1295  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1296  Opts.Triple = getLastArgValue(Args, OPT_triple);
1297  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1298
1299  // Use the host triple if unspecified.
1300  if (Opts.Triple.empty())
1301    Opts.Triple = llvm::sys::getHostTriple();
1302}
1303
1304//
1305
1306void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1307                                        const char **ArgBegin,
1308                                        const char **ArgEnd,
1309                                        Diagnostic &Diags) {
1310  // Parse the arguments.
1311  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1312  unsigned MissingArgIndex, MissingArgCount;
1313  llvm::OwningPtr<InputArgList> Args(
1314    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1315
1316  // Check for missing argument error.
1317  if (MissingArgCount)
1318    Diags.Report(diag::err_drv_missing_argument)
1319      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1320
1321  // Issue errors on unknown arguments.
1322  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1323         ie = Args->filtered_end(); it != ie; ++it)
1324    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1325
1326  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1327  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1328  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1329  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1330  FrontendOptions::InputKind DashX =
1331    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1332  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1333  if (DashX != FrontendOptions::IK_AST)
1334    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1335  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1336  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1337  ParseTargetArgs(Res.getTargetOpts(), *Args);
1338}
1339