CompilerInvocation.cpp revision e2e69ef80ac09a489d00ce104e2e87867dc3dd26 
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  // Inlining is only derived.
149
150  if (Opts.DataSections)
151    Res.push_back("-fdata-sections");
152  if (Opts.FunctionSections)
153    Res.push_back("-ffunction-sections");
154  if (Opts.AsmVerbose)
155    Res.push_back("-masm-verbose");
156  if (!Opts.CodeModel.empty()) {
157    Res.push_back("-mcode-model");
158    Res.push_back(Opts.CodeModel);
159  }
160  if (!Opts.CXAAtExit)
161    Res.push_back("-fno-use-cxa-atexit");
162  if (Opts.CXXCtorDtorAliases)
163    Res.push_back("-mconstructor-aliases");
164  if (!Opts.DebugPass.empty()) {
165    Res.push_back("-mdebug-pass");
166    Res.push_back(Opts.DebugPass);
167  }
168  if (Opts.DisableFPElim)
169    Res.push_back("-mdisable-fp-elim");
170  if (!Opts.FloatABI.empty()) {
171    Res.push_back("-mfloat-abi");
172    Res.push_back(Opts.FloatABI);
173  }
174  if (!Opts.LimitFloatPrecision.empty()) {
175    Res.push_back("-mlimit-float-precision");
176    Res.push_back(Opts.LimitFloatPrecision);
177  }
178  if (Opts.NoZeroInitializedInBSS)
179    Res.push_back("-mno-zero-initialized-bss");
180  switch (Opts.getObjCDispatchMethod()) {
181  case CodeGenOptions::Legacy:
182    break;
183  case CodeGenOptions::Mixed:
184    Res.push_back("-fobjc-dispatch-method=mixed");
185    break;
186  case CodeGenOptions::NonLegacy:
187    Res.push_back("-fobjc-dispatch-method=non-legacy");
188    break;
189  }
190  if (Opts.SoftFloat)
191    Res.push_back("-msoft-float");
192  if (Opts.UnwindTables)
193    Res.push_back("-munwind-tables");
194  if (Opts.RelocationModel != "pic") {
195    Res.push_back("-mrelocation-model");
196    Res.push_back(Opts.RelocationModel);
197  }
198  if (!Opts.VerifyModule)
199    Res.push_back("-disable-llvm-verifier");
200}
201
202static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
203                                       std::vector<std::string> &Res) {
204  if (Opts.IncludeSystemHeaders)
205    Res.push_back("-sys-header-deps");
206  if (Opts.UsePhonyTargets)
207    Res.push_back("-MP");
208  if (!Opts.OutputFile.empty()) {
209    Res.push_back("-dependency-file");
210    Res.push_back(Opts.OutputFile);
211  }
212  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
213    Res.push_back("-MT");
214    Res.push_back(Opts.Targets[i]);
215  }
216}
217
218static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
219                                 std::vector<std::string> &Res) {
220  if (Opts.IgnoreWarnings)
221    Res.push_back("-w");
222  if (Opts.NoRewriteMacros)
223    Res.push_back("-Wno-rewrite-macros");
224  if (Opts.Pedantic)
225    Res.push_back("-pedantic");
226  if (Opts.PedanticErrors)
227    Res.push_back("-pedantic-errors");
228  if (!Opts.ShowColumn)
229    Res.push_back("-fno-show-column");
230  if (!Opts.ShowLocation)
231    Res.push_back("-fno-show-source-location");
232  if (!Opts.ShowCarets)
233    Res.push_back("-fno-caret-diagnostics");
234  if (!Opts.ShowFixits)
235    Res.push_back("-fno-diagnostics-fixit-info");
236  if (Opts.ShowSourceRanges)
237    Res.push_back("-fdiagnostics-print-source-range-info");
238  if (Opts.ShowColors)
239    Res.push_back("-fcolor-diagnostics");
240  if (Opts.VerifyDiagnostics)
241    Res.push_back("-verify");
242  if (Opts.BinaryOutput)
243    Res.push_back("-fdiagnostics-binary");
244  if (Opts.ShowOptionNames)
245    Res.push_back("-fdiagnostics-show-option");
246  if (Opts.ErrorLimit) {
247    Res.push_back("-ferror-limit");
248    Res.push_back(llvm::utostr(Opts.ErrorLimit));
249  }
250  if (Opts.TemplateBacktraceLimit != 10) {
251    Res.push_back("-ftemplate-backtrace-limit");
252    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
253  }
254
255  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
256    Res.push_back("-ftabstop");
257    Res.push_back(llvm::utostr(Opts.TabStop));
258  }
259  if (Opts.MessageLength) {
260    Res.push_back("-fmessage-length");
261    Res.push_back(llvm::utostr(Opts.MessageLength));
262  }
263  if (!Opts.DumpBuildInformation.empty()) {
264    Res.push_back("-dump-build-information");
265    Res.push_back(Opts.DumpBuildInformation);
266  }
267  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
268    Res.push_back("-W" + Opts.Warnings[i]);
269}
270
271static const char *getInputKindName(FrontendOptions::InputKind Kind) {
272  switch (Kind) {
273  case FrontendOptions::IK_None:              break;
274  case FrontendOptions::IK_AST:               return "ast";
275  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
276  case FrontendOptions::IK_C:                 return "c";
277  case FrontendOptions::IK_CXX:               return "c++";
278  case FrontendOptions::IK_ObjC:              return "objective-c";
279  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
280  case FrontendOptions::IK_OpenCL:            return "cl";
281  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
282  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
283  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
284  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
285  }
286
287  llvm_unreachable("Unexpected language kind!");
288  return 0;
289}
290
291static const char *getActionName(frontend::ActionKind Kind) {
292  switch (Kind) {
293  case frontend::PluginAction:
294  case frontend::InheritanceView:
295    llvm_unreachable("Invalid kind!");
296
297  case frontend::ASTDump:                return "-ast-dump";
298  case frontend::ASTPrint:               return "-ast-print";
299  case frontend::ASTPrintXML:            return "-ast-print-xml";
300  case frontend::ASTView:                return "-ast-view";
301  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
302  case frontend::DumpTokens:             return "-dump-tokens";
303  case frontend::EmitAssembly:           return "-S";
304  case frontend::EmitBC:                 return "-emit-llvm-bc";
305  case frontend::EmitHTML:               return "-emit-html";
306  case frontend::EmitLLVM:               return "-emit-llvm";
307  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
308  case frontend::EmitObj:                return "-emit-obj";
309  case frontend::FixIt:                  return "-fixit";
310  case frontend::GeneratePCH:            return "-emit-pch";
311  case frontend::GeneratePTH:            return "-emit-pth";
312  case frontend::InitOnly:               return "-init-only";
313  case frontend::ParseNoop:              return "-parse-noop";
314  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
315  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
316  case frontend::PrintDeclContext:       return "-print-decl-contexts";
317  case frontend::PrintPreprocessedInput: return "-E";
318  case frontend::RewriteMacros:          return "-rewrite-macros";
319  case frontend::RewriteObjC:            return "-rewrite-objc";
320  case frontend::RewriteTest:            return "-rewrite-test";
321  case frontend::RunAnalysis:            return "-analyze";
322  case frontend::RunPreprocessorOnly:    return "-Eonly";
323  }
324
325  llvm_unreachable("Unexpected language kind!");
326  return 0;
327}
328
329static void FrontendOptsToArgs(const FrontendOptions &Opts,
330                               std::vector<std::string> &Res) {
331  if (!Opts.DebugCodeCompletionPrinter)
332    Res.push_back("-no-code-completion-debug-printer");
333  if (Opts.DisableFree)
334    Res.push_back("-disable-free");
335  if (Opts.RelocatablePCH)
336    Res.push_back("-relocatable-pch");
337  if (Opts.ShowHelp)
338    Res.push_back("-help");
339  if (Opts.ShowMacrosInCodeCompletion)
340    Res.push_back("-code-completion-macros");
341  if (Opts.ShowStats)
342    Res.push_back("-print-stats");
343  if (Opts.ShowTimers)
344    Res.push_back("-ftime-report");
345  if (Opts.ShowVersion)
346    Res.push_back("-version");
347
348  bool NeedLang = false;
349  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
350    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
351        Opts.Inputs[i].first)
352      NeedLang = true;
353  if (NeedLang) {
354    Res.push_back("-x");
355    Res.push_back(getInputKindName(Opts.Inputs[0].first));
356  }
357  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
358    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
359           "Unable to represent this input vector!");
360    Res.push_back(Opts.Inputs[i].second);
361  }
362
363  if (!Opts.OutputFile.empty()) {
364    Res.push_back("-o");
365    Res.push_back(Opts.OutputFile);
366  }
367  if (!Opts.ViewClassInheritance.empty()) {
368    Res.push_back("-cxx-inheritance-view");
369    Res.push_back(Opts.ViewClassInheritance);
370  }
371  if (!Opts.CodeCompletionAt.FileName.empty()) {
372    Res.push_back("-code-completion-at");
373    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
374                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
375                  llvm::utostr(Opts.CodeCompletionAt.Column));
376  }
377  if (Opts.ProgramAction != frontend::InheritanceView &&
378      Opts.ProgramAction != frontend::PluginAction)
379    Res.push_back(getActionName(Opts.ProgramAction));
380  if (!Opts.ActionName.empty()) {
381    Res.push_back("-plugin");
382    Res.push_back(Opts.ActionName);
383  }
384  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
385    Res.push_back("-load");
386    Res.push_back(Opts.Plugins[i]);
387  }
388  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
389    Res.push_back("-ast-merge");
390    Res.push_back(Opts.ASTMergeFiles[i]);
391  }
392  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
393    Res.push_back("-mllvm");
394    Res.push_back(Opts.LLVMArgs[i]);
395  }
396}
397
398static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
399                                   std::vector<std::string> &Res) {
400  if (Opts.Sysroot != "/") {
401    Res.push_back("-isysroot");
402    Res.push_back(Opts.Sysroot);
403  }
404
405  /// User specified include entries.
406  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
407    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
408    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
409      llvm::report_fatal_error("Invalid option set!");
410    if (E.IsUserSupplied) {
411      if (E.Group == frontend::After) {
412        Res.push_back("-idirafter");
413      } else if (E.Group == frontend::Quoted) {
414        Res.push_back("-iquote");
415      } else if (E.Group == frontend::System) {
416        Res.push_back("-isystem");
417      } else {
418        assert(E.Group == frontend::Angled && "Invalid group!");
419        Res.push_back(E.IsFramework ? "-F" : "-I");
420      }
421    } else {
422      if (E.Group != frontend::Angled && E.Group != frontend::System)
423        llvm::report_fatal_error("Invalid option set!");
424      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
425                    "-iwithprefix");
426    }
427    Res.push_back(E.Path);
428  }
429
430  if (!Opts.EnvIncPath.empty()) {
431    // FIXME: Provide an option for this, and move env detection to driver.
432    llvm::report_fatal_error("Not yet implemented!");
433  }
434  if (!Opts.CEnvIncPath.empty()) {
435    // FIXME: Provide an option for this, and move env detection to driver.
436    llvm::report_fatal_error("Not yet implemented!");
437  }
438  if (!Opts.ObjCEnvIncPath.empty()) {
439    // FIXME: Provide an option for this, and move env detection to driver.
440    llvm::report_fatal_error("Not yet implemented!");
441  }
442  if (!Opts.CXXEnvIncPath.empty()) {
443    // FIXME: Provide an option for this, and move env detection to driver.
444    llvm::report_fatal_error("Not yet implemented!");
445  }
446  if (!Opts.ObjCXXEnvIncPath.empty()) {
447    // FIXME: Provide an option for this, and move env detection to driver.
448    llvm::report_fatal_error("Not yet implemented!");
449  }
450  if (!Opts.ResourceDir.empty()) {
451    Res.push_back("-resource-dir");
452    Res.push_back(Opts.ResourceDir);
453  }
454  if (!Opts.UseStandardIncludes)
455    Res.push_back("-nostdinc");
456  if (!Opts.UseStandardCXXIncludes)
457    Res.push_back("-nostdinc++");
458  if (Opts.Verbose)
459    Res.push_back("-v");
460}
461
462static void LangOptsToArgs(const LangOptions &Opts,
463                           std::vector<std::string> &Res) {
464  LangOptions DefaultLangOpts;
465
466  // FIXME: Need to set -std to get all the implicit options.
467
468  // FIXME: We want to only pass options relative to the defaults, which
469  // requires constructing a target. :(
470  //
471  // It would be better to push the all target specific choices into the driver,
472  // so that everything below that was more uniform.
473
474  if (Opts.Trigraphs)
475    Res.push_back("-trigraphs");
476  // Implicit based on the input kind:
477  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
478  // Implicit based on the input language standard:
479  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
480  if (Opts.DollarIdents)
481    Res.push_back("-fdollars-in-identifiers");
482  if (Opts.GNUMode && !Opts.GNUKeywords)
483    Res.push_back("-fno-gnu-keywords");
484  if (!Opts.GNUMode && Opts.GNUKeywords)
485    Res.push_back("-fgnu-keywords");
486  if (Opts.Microsoft)
487    Res.push_back("-fms-extensions");
488  if (Opts.ObjCNonFragileABI)
489    Res.push_back("-fobjc-nonfragile-abi");
490  if (Opts.ObjCNonFragileABI2)
491    Res.push_back("-fobjc-nonfragile-abi2");
492  // NoInline is implicit.
493  if (!Opts.CXXOperatorNames)
494    Res.push_back("-fno-operator-names");
495  if (Opts.PascalStrings)
496    Res.push_back("-fpascal-strings");
497  if (Opts.CatchUndefined)
498    Res.push_back("-fcatch-undefined-behavior");
499  if (Opts.WritableStrings)
500    Res.push_back("-fwritable-strings");
501  if (Opts.ConstStrings)
502    Res.push_back("-Wwrite-strings");
503  if (!Opts.LaxVectorConversions)
504    Res.push_back("-fno-lax-vector-conversions");
505  if (Opts.AltiVec)
506    Res.push_back("-faltivec");
507  if (Opts.Exceptions)
508    Res.push_back("-fexceptions");
509  if (Opts.SjLjExceptions)
510    Res.push_back("-fsjlj-exceptions");
511  if (!Opts.RTTI)
512    Res.push_back("-fno-rtti");
513  if (!Opts.NeXTRuntime)
514    Res.push_back("-fgnu-runtime");
515  if (Opts.Freestanding)
516    Res.push_back("-ffreestanding");
517  if (Opts.NoBuiltin)
518    Res.push_back("-fno-builtin");
519  if (!Opts.AssumeSaneOperatorNew)
520    Res.push_back("-fno-assume-sane-operator-new");
521  if (!Opts.ThreadsafeStatics)
522    Res.push_back("-fno-threadsafe-statics");
523  if (Opts.POSIXThreads)
524    Res.push_back("-pthread");
525  if (Opts.Blocks)
526    Res.push_back("-fblocks");
527  if (Opts.EmitAllDecls)
528    Res.push_back("-femit-all-decls");
529  if (Opts.MathErrno)
530    Res.push_back("-fmath-errno");
531  if (Opts.OverflowChecking)
532    Res.push_back("-ftrapv");
533  if (Opts.HeinousExtensions)
534    Res.push_back("-fheinous-gnu-extensions");
535  // Optimize is implicit.
536  // OptimizeSize is implicit.
537  if (Opts.Static)
538    Res.push_back("-static-define");
539  if (Opts.DumpRecordLayouts)
540    Res.push_back("-fdump-record-layouts");
541  if (Opts.DumpVTableLayouts)
542    Res.push_back("-fdump-vtable-layouts");
543  if (Opts.NoBitFieldTypeAlign)
544    Res.push_back("-fno-bitfield-type-alignment");
545  if (Opts.SjLjExceptions)
546    Res.push_back("-fsjlj-exceptions");
547  if (Opts.PICLevel) {
548    Res.push_back("-pic-level");
549    Res.push_back(llvm::utostr(Opts.PICLevel));
550  }
551  if (Opts.ObjCGCBitmapPrint)
552    Res.push_back("-print-ivar-layout");
553  if (Opts.NoConstantCFStrings)
554    Res.push_back("-fno-constant-cfstrings");
555  if (!Opts.AccessControl)
556    Res.push_back("-fno-access-control");
557  if (!Opts.CharIsSigned)
558    Res.push_back("-fno-signed-char");
559  if (Opts.ShortWChar)
560    Res.push_back("-fshort-wchar");
561  if (!Opts.ElideConstructors)
562    Res.push_back("-fno-elide-constructors");
563  if (Opts.getGCMode() != LangOptions::NonGC) {
564    if (Opts.getGCMode() == LangOptions::HybridGC) {
565      Res.push_back("-fobjc-gc");
566    } else {
567      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
568      Res.push_back("-fobjc-gc-only");
569    }
570  }
571  if (Opts.getVisibilityMode() != LangOptions::Default) {
572    Res.push_back("-fvisibility");
573    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
574      Res.push_back("hidden");
575    } else {
576      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
577             "Invalid visibility!");
578      Res.push_back("protected");
579    }
580  }
581  if (Opts.getStackProtectorMode() != 0) {
582    Res.push_back("-stack-protector");
583    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
584  }
585  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
586    Res.push_back("-ftemplate-depth");
587    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
588  }
589  if (!Opts.ObjCConstantStringClass.empty()) {
590    Res.push_back("-fconstant-string-class");
591    Res.push_back(Opts.ObjCConstantStringClass);
592  }
593}
594
595static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
596                                   std::vector<std::string> &Res) {
597  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
598    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
599                  Opts.Macros[i].first);
600  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
601    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
602    Res.push_back("-include");
603    Res.push_back(Opts.Includes[i]);
604  }
605  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
606    Res.push_back("-imacros");
607    Res.push_back(Opts.MacroIncludes[i]);
608  }
609  if (!Opts.UsePredefines)
610    Res.push_back("-undef");
611  if (Opts.DetailedRecord)
612    Res.push_back("-detailed-preprocessing-record");
613  if (!Opts.ImplicitPCHInclude.empty()) {
614    Res.push_back("-include-pch");
615    Res.push_back(Opts.ImplicitPCHInclude);
616  }
617  if (!Opts.ImplicitPTHInclude.empty()) {
618    Res.push_back("-include-pth");
619    Res.push_back(Opts.ImplicitPTHInclude);
620  }
621  if (!Opts.TokenCache.empty()) {
622    if (Opts.ImplicitPTHInclude.empty()) {
623      Res.push_back("-token-cache");
624      Res.push_back(Opts.TokenCache);
625    } else
626      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
627             "Unsupported option combination!");
628  }
629  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
630    Res.push_back("-remap-file");
631    Res.push_back(Opts.RemappedFiles[i].first + ";" +
632                  Opts.RemappedFiles[i].second);
633  }
634}
635
636static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
637                                         std::vector<std::string> &Res) {
638  if (!Opts.ShowCPP && !Opts.ShowMacros)
639    llvm::report_fatal_error("Invalid option combination!");
640
641  if (Opts.ShowCPP && Opts.ShowMacros)
642    Res.push_back("-dD");
643  else if (!Opts.ShowCPP && Opts.ShowMacros)
644    Res.push_back("-dM");
645
646  if (!Opts.ShowLineMarkers)
647    Res.push_back("-P");
648  if (Opts.ShowComments)
649    Res.push_back("-C");
650  if (Opts.ShowMacroComments)
651    Res.push_back("-CC");
652}
653
654static void TargetOptsToArgs(const TargetOptions &Opts,
655                             std::vector<std::string> &Res) {
656  Res.push_back("-triple");
657  Res.push_back(Opts.Triple);
658  if (!Opts.CPU.empty()) {
659    Res.push_back("-target-cpu");
660    Res.push_back(Opts.CPU);
661  }
662  if (!Opts.ABI.empty()) {
663    Res.push_back("-target-abi");
664    Res.push_back(Opts.ABI);
665  }
666  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
667    Res.push_back("-target-feature");
668    Res.push_back(Opts.Features[i]);
669  }
670}
671
672void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
673  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
674  CodeGenOptsToArgs(getCodeGenOpts(), Res);
675  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
676  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
677  FrontendOptsToArgs(getFrontendOpts(), Res);
678  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
679  LangOptsToArgs(getLangOpts(), Res);
680  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
681  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
682  TargetOptsToArgs(getTargetOpts(), Res);
683}
684
685//===----------------------------------------------------------------------===//
686// Deserialization (to args)
687//===----------------------------------------------------------------------===//
688
689using namespace clang::driver;
690using namespace clang::driver::cc1options;
691
692static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
693                                       llvm::StringRef Default = "") {
694  if (Arg *A = Args.getLastArg(ID))
695    return A->getValue(Args);
696  return Default;
697}
698
699static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
700                              int Default, Diagnostic &Diags) {
701  Arg *A = Args.getLastArg(ID);
702  if (!A)
703    return Default;
704
705  int Res = Default;
706  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
707    Diags.Report(diag::err_drv_invalid_int_value)
708        << A->getAsString(Args) << A->getValue(Args);
709
710  return Res;
711}
712
713static std::vector<std::string>
714getAllArgValues(ArgList &Args, cc1options::ID ID) {
715  llvm::SmallVector<const char *, 16> Values;
716  Args.AddAllArgValues(Values, ID);
717  return std::vector<std::string>(Values.begin(), Values.end());
718}
719
720//
721
722static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
723                              Diagnostic &Diags) {
724  using namespace cc1options;
725
726  Opts.AnalysisList.clear();
727#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
728  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
729#include "clang/Frontend/Analyses.def"
730
731  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
732    llvm::StringRef Name = A->getValue(Args);
733    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
734#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
735      .Case(CMDFLAG, NAME##Model)
736#include "clang/Frontend/Analyses.def"
737      .Default(NumStores);
738    // FIXME: Error handling.
739    if (Value == NumStores)
740      Diags.Report(diag::err_drv_invalid_value)
741        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
742    else
743      Opts.AnalysisStoreOpt = Value;
744  }
745
746  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
747    llvm::StringRef Name = A->getValue(Args);
748    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
749#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
750      .Case(CMDFLAG, NAME##Model)
751#include "clang/Frontend/Analyses.def"
752      .Default(NumConstraints);
753    // FIXME: Error handling.
754    if (Value == NumConstraints)
755      Diags.Report(diag::err_drv_invalid_value)
756        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
757    else
758      Opts.AnalysisConstraintsOpt = Value;
759  }
760
761  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
762    llvm::StringRef Name = A->getValue(Args);
763    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
764#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
765      .Case(CMDFLAG, PD_##NAME)
766#include "clang/Frontend/Analyses.def"
767      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
768    // FIXME: Error handling.
769    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
770      Diags.Report(diag::err_drv_invalid_value)
771        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
772    else
773      Opts.AnalysisDiagOpt = Value;
774  }
775
776  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
777  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
778  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
779  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
780  Opts.AnalyzeNestedBlocks =
781    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
782  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
783  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
784  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
785  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
786  Opts.EnableExperimentalInternalChecks =
787    Args.hasArg(OPT_analyzer_experimental_internal_checks);
788  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
789  Opts.MaxNodes = getLastArgIntValue(Args, OPT_analyzer_max_nodes,150000,Diags);
790}
791
792static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
793                             Diagnostic &Diags) {
794  using namespace cc1options;
795  // -Os implies -O2
796  if (Args.hasArg(OPT_Os))
797    Opts.OptimizationLevel = 2;
798  else {
799    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
800    if (Opts.OptimizationLevel > 3) {
801      Diags.Report(diag::err_drv_invalid_value)
802        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
803      Opts.OptimizationLevel = 3;
804    }
805  }
806
807  // We must always run at least the always inlining pass.
808  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
809    : CodeGenOptions::OnlyAlwaysInlining;
810
811  Opts.DebugInfo = Args.hasArg(OPT_g);
812  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
813  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
814  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
815  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
816  Opts.NoCommon = Args.hasArg(OPT_fno_common);
817  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
818  Opts.OptimizeSize = Args.hasArg(OPT_Os);
819  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
820
821  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
822  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
823  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
824  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
825  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
826  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
827  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
828  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
829  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
830  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
831  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
832  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
833
834  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
835  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
836
837  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
838  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
839
840  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
841    llvm::StringRef Name = A->getValue(Args);
842    unsigned Method = llvm::StringSwitch<unsigned>(Name)
843      .Case("legacy", CodeGenOptions::Legacy)
844      .Case("non-legacy", CodeGenOptions::NonLegacy)
845      .Case("mixed", CodeGenOptions::Mixed)
846      .Default(~0U);
847    if (Method == ~0U)
848      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
849    else
850      Opts.ObjCDispatchMethod = Method;
851  }
852}
853
854static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
855                                      ArgList &Args) {
856  using namespace cc1options;
857  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
858  Opts.Targets = getAllArgValues(Args, OPT_MT);
859  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
860  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
861}
862
863static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
864                                Diagnostic &Diags) {
865  using namespace cc1options;
866  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
867  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
868  Opts.Pedantic = Args.hasArg(OPT_pedantic);
869  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
870  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
871  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
872  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
873  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
874  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
875  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
876  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
877  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
878  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
879  Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
880  Opts.TemplateBacktraceLimit
881    = getLastArgIntValue(Args, OPT_ftemplate_backtrace_limit, 0, Diags);
882  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
883                                    DiagnosticOptions::DefaultTabStop, Diags);
884  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
885    Diags.Report(diag::warn_ignoring_ftabstop_value)
886      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
887    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
888  }
889  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
890  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
891  Opts.Warnings = getAllArgValues(Args, OPT_W);
892}
893
894static FrontendOptions::InputKind
895ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
896  using namespace cc1options;
897  Opts.ProgramAction = frontend::ParseSyntaxOnly;
898  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
899    switch (A->getOption().getID()) {
900    default:
901      assert(0 && "Invalid option in group!");
902    case OPT_ast_dump:
903      Opts.ProgramAction = frontend::ASTDump; break;
904    case OPT_ast_print:
905      Opts.ProgramAction = frontend::ASTPrint; break;
906    case OPT_ast_print_xml:
907      Opts.ProgramAction = frontend::ASTPrintXML; break;
908    case OPT_ast_view:
909      Opts.ProgramAction = frontend::ASTView; break;
910    case OPT_dump_raw_tokens:
911      Opts.ProgramAction = frontend::DumpRawTokens; break;
912    case OPT_dump_tokens:
913      Opts.ProgramAction = frontend::DumpTokens; break;
914    case OPT_S:
915      Opts.ProgramAction = frontend::EmitAssembly; break;
916    case OPT_emit_llvm_bc:
917      Opts.ProgramAction = frontend::EmitBC; break;
918    case OPT_emit_html:
919      Opts.ProgramAction = frontend::EmitHTML; break;
920    case OPT_emit_llvm:
921      Opts.ProgramAction = frontend::EmitLLVM; break;
922    case OPT_emit_llvm_only:
923      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
924    case OPT_emit_obj:
925      Opts.ProgramAction = frontend::EmitObj; break;
926    case OPT_fixit_EQ:
927      Opts.FixItSuffix = A->getValue(Args);
928      // fall-through!
929    case OPT_fixit:
930      Opts.ProgramAction = frontend::FixIt; break;
931    case OPT_emit_pch:
932      Opts.ProgramAction = frontend::GeneratePCH; break;
933    case OPT_emit_pth:
934      Opts.ProgramAction = frontend::GeneratePTH; break;
935    case OPT_init_only:
936      Opts.ProgramAction = frontend::InitOnly; break;
937    case OPT_parse_noop:
938      Opts.ProgramAction = frontend::ParseNoop; break;
939    case OPT_parse_print_callbacks:
940      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
941    case OPT_fsyntax_only:
942      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
943    case OPT_print_decl_contexts:
944      Opts.ProgramAction = frontend::PrintDeclContext; break;
945    case OPT_E:
946      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
947    case OPT_rewrite_macros:
948      Opts.ProgramAction = frontend::RewriteMacros; break;
949    case OPT_rewrite_objc:
950      Opts.ProgramAction = frontend::RewriteObjC; break;
951    case OPT_rewrite_test:
952      Opts.ProgramAction = frontend::RewriteTest; break;
953    case OPT_analyze:
954      Opts.ProgramAction = frontend::RunAnalysis; break;
955    case OPT_Eonly:
956      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
957    }
958  }
959  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
960    Opts.ProgramAction = frontend::PluginAction;
961    Opts.ActionName = A->getValue(Args);
962  }
963
964  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
965    Opts.CodeCompletionAt =
966      ParsedSourceLocation::FromString(A->getValue(Args));
967    if (Opts.CodeCompletionAt.FileName.empty())
968      Diags.Report(diag::err_drv_invalid_value)
969        << A->getAsString(Args) << A->getValue(Args);
970  }
971  Opts.DebugCodeCompletionPrinter =
972    !Args.hasArg(OPT_no_code_completion_debug_printer);
973  Opts.DisableFree = Args.hasArg(OPT_disable_free);
974
975  Opts.OutputFile = getLastArgValue(Args, OPT_o);
976  Opts.Plugins = getAllArgValues(Args, OPT_load);
977  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
978  Opts.ShowHelp = Args.hasArg(OPT_help);
979  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
980  Opts.ShowStats = Args.hasArg(OPT_print_stats);
981  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
982  Opts.ShowVersion = Args.hasArg(OPT_version);
983  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
984  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
985  Opts.LLVMArgs = getAllArgValues(Args, OPT_mllvm);
986
987  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
988  if (const Arg *A = Args.getLastArg(OPT_x)) {
989    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
990      .Case("c", FrontendOptions::IK_C)
991      .Case("cl", FrontendOptions::IK_OpenCL)
992      .Case("c", FrontendOptions::IK_C)
993      .Case("cl", FrontendOptions::IK_OpenCL)
994      .Case("c++", FrontendOptions::IK_CXX)
995      .Case("objective-c", FrontendOptions::IK_ObjC)
996      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
997      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
998      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
999      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
1000      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
1001      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1002      .Case("c-header", FrontendOptions::IK_C)
1003      .Case("objective-c-header", FrontendOptions::IK_ObjC)
1004      .Case("c++-header", FrontendOptions::IK_CXX)
1005      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1006      .Case("ast", FrontendOptions::IK_AST)
1007      .Default(FrontendOptions::IK_None);
1008    if (DashX == FrontendOptions::IK_None)
1009      Diags.Report(diag::err_drv_invalid_value)
1010        << A->getAsString(Args) << A->getValue(Args);
1011  }
1012
1013  // '-' is the default input if none is given.
1014  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
1015  Opts.Inputs.clear();
1016  if (Inputs.empty())
1017    Inputs.push_back("-");
1018  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1019    FrontendOptions::InputKind IK = DashX;
1020    if (IK == FrontendOptions::IK_None) {
1021      IK = FrontendOptions::getInputKindForExtension(
1022        llvm::StringRef(Inputs[i]).rsplit('.').second);
1023      // FIXME: Remove this hack.
1024      if (i == 0)
1025        DashX = IK;
1026    }
1027    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1028  }
1029
1030  return DashX;
1031}
1032
1033std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1034                                                 void *MainAddr) {
1035  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1036
1037  if (!P.isEmpty()) {
1038    P.eraseComponent();  // Remove /clang from foo/bin/clang
1039    P.eraseComponent();  // Remove /bin   from foo/bin
1040
1041    // Get foo/lib/clang/<version>/include
1042    P.appendComponent("lib");
1043    P.appendComponent("clang");
1044    P.appendComponent(CLANG_VERSION_STRING);
1045  }
1046
1047  return P.str();
1048}
1049
1050static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1051  using namespace cc1options;
1052  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1053  Opts.Verbose = Args.hasArg(OPT_v);
1054  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1055  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1056  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1057  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1058
1059  // Add -I... and -F... options in order.
1060  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1061         ie = Args.filtered_end(); it != ie; ++it)
1062    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1063                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1064
1065  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1066  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1067  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1068                                             OPT_iwithprefixbefore),
1069         ie = Args.filtered_end(); it != ie; ++it) {
1070    if (it->getOption().matches(OPT_iprefix))
1071      Prefix = it->getValue(Args);
1072    else if (it->getOption().matches(OPT_iwithprefix))
1073      Opts.AddPath(Prefix.str() + it->getValue(Args),
1074                   frontend::System, false, false);
1075    else
1076      Opts.AddPath(Prefix.str() + it->getValue(Args),
1077                   frontend::Angled, false, false);
1078  }
1079
1080  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1081         ie = Args.filtered_end(); it != ie; ++it)
1082    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1083  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1084         ie = Args.filtered_end(); it != ie; ++it)
1085    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1086  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1087         ie = Args.filtered_end(); it != ie; ++it)
1088    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1089
1090  // FIXME: Need options for the various environment variables!
1091}
1092
1093static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1094                          FrontendOptions::InputKind IK,
1095                          Diagnostic &Diags) {
1096  // FIXME: Cleanup per-file based stuff.
1097
1098  // Set some properties which depend soley on the input kind; it would be nice
1099  // to move these to the language standard, and have the driver resolve the
1100  // input kind + language standard.
1101  if (IK == FrontendOptions::IK_Asm) {
1102    Opts.AsmPreprocessor = 1;
1103  } else if (IK == FrontendOptions::IK_ObjC ||
1104             IK == FrontendOptions::IK_ObjCXX ||
1105             IK == FrontendOptions::IK_PreprocessedObjC ||
1106             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1107    Opts.ObjC1 = Opts.ObjC2 = 1;
1108  }
1109
1110  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1111  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1112    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1113#define LANGSTANDARD(id, name, desc, features) \
1114      .Case(name, LangStandard::lang_##id)
1115#include "clang/Frontend/LangStandards.def"
1116      .Default(LangStandard::lang_unspecified);
1117    if (LangStd == LangStandard::lang_unspecified)
1118      Diags.Report(diag::err_drv_invalid_value)
1119        << A->getAsString(Args) << A->getValue(Args);
1120  }
1121
1122  if (LangStd == LangStandard::lang_unspecified) {
1123    // Based on the base language, pick one.
1124    switch (IK) {
1125    case FrontendOptions::IK_None:
1126    case FrontendOptions::IK_AST:
1127      assert(0 && "Invalid input kind!");
1128    case FrontendOptions::IK_OpenCL:
1129      LangStd = LangStandard::lang_opencl;
1130      break;
1131    case FrontendOptions::IK_Asm:
1132    case FrontendOptions::IK_C:
1133    case FrontendOptions::IK_PreprocessedC:
1134    case FrontendOptions::IK_ObjC:
1135    case FrontendOptions::IK_PreprocessedObjC:
1136      LangStd = LangStandard::lang_gnu99;
1137      break;
1138    case FrontendOptions::IK_CXX:
1139    case FrontendOptions::IK_PreprocessedCXX:
1140    case FrontendOptions::IK_ObjCXX:
1141    case FrontendOptions::IK_PreprocessedObjCXX:
1142      LangStd = LangStandard::lang_gnucxx98;
1143      break;
1144    }
1145  }
1146
1147  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1148  Opts.BCPLComment = Std.hasBCPLComments();
1149  Opts.C99 = Std.isC99();
1150  Opts.CPlusPlus = Std.isCPlusPlus();
1151  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1152  Opts.Digraphs = Std.hasDigraphs();
1153  Opts.GNUMode = Std.isGNUMode();
1154  Opts.GNUInline = !Std.isC99();
1155  Opts.HexFloats = Std.hasHexFloats();
1156  Opts.ImplicitInt = Std.hasImplicitInt();
1157
1158  // OpenCL has some additional defaults.
1159  if (LangStd == LangStandard::lang_opencl) {
1160    Opts.OpenCL = 1;
1161    Opts.AltiVec = 1;
1162    Opts.CXXOperatorNames = 1;
1163    Opts.LaxVectorConversions = 1;
1164  }
1165
1166  // OpenCL and C++ both have bool, true, false keywords.
1167  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1168
1169  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1170  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1171  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1172  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1173  // name, as it doesn't seem a useful distinction.
1174  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1175                                  Opts.GNUMode);
1176
1177  if (Opts.CPlusPlus)
1178    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1179
1180  if (Args.hasArg(OPT_fobjc_gc_only))
1181    Opts.setGCMode(LangOptions::GCOnly);
1182  else if (Args.hasArg(OPT_fobjc_gc))
1183    Opts.setGCMode(LangOptions::HybridGC);
1184
1185  if (Args.hasArg(OPT_print_ivar_layout))
1186    Opts.ObjCGCBitmapPrint = 1;
1187  if (Args.hasArg(OPT_fno_constant_cfstrings))
1188    Opts.NoConstantCFStrings = 1;
1189
1190  if (Args.hasArg(OPT_faltivec))
1191    Opts.AltiVec = 1;
1192
1193  if (Args.hasArg(OPT_pthread))
1194    Opts.POSIXThreads = 1;
1195
1196  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1197                                        "default");
1198  if (Vis == "default")
1199    Opts.setVisibilityMode(LangOptions::Default);
1200  else if (Vis == "hidden")
1201    Opts.setVisibilityMode(LangOptions::Hidden);
1202  else if (Vis == "protected")
1203    Opts.setVisibilityMode(LangOptions::Protected);
1204  else
1205    Diags.Report(diag::err_drv_invalid_value)
1206      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1207
1208  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1209
1210  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1211  // is specified, or -std is set to a conforming mode.
1212  Opts.Trigraphs = !Opts.GNUMode;
1213  if (Args.hasArg(OPT_trigraphs))
1214    Opts.Trigraphs = 1;
1215
1216  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1217                                   OPT_fno_dollars_in_identifiers,
1218                                   !Opts.AsmPreprocessor);
1219  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1220  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1221  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1222  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1223  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1224    Opts.LaxVectorConversions = 0;
1225  if (Args.hasArg(OPT_fno_threadsafe_statics))
1226    Opts.ThreadsafeStatics = 0;
1227  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1228  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1229  Opts.Blocks = Args.hasArg(OPT_fblocks);
1230  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1231  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1232  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1233  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1234  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1235  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1236  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1237  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1238  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1239  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 1024,
1240                                               Diags);
1241  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1242  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1243                                                 OPT_fconstant_string_class);
1244  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1245  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1246  if (Opts.ObjCNonFragileABI2)
1247    Opts.ObjCNonFragileABI = true;
1248  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1249  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1250  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1251  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1252  Opts.Static = Args.hasArg(OPT_static_define);
1253  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1254  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1255  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1256  Opts.OptimizeSize = 0;
1257
1258  // FIXME: Eliminate this dependency.
1259  unsigned Opt =
1260    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1261  Opts.Optimize = Opt != 0;
1262
1263  // This is the __NO_INLINE__ define, which just depends on things like the
1264  // optimization level and -fno-inline, not actually whether the backend has
1265  // inlining enabled.
1266  //
1267  // FIXME: This is affected by other options (-fno-inline).
1268  Opts.NoInline = !Opt;
1269
1270  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1271  switch (SSP) {
1272  default:
1273    Diags.Report(diag::err_drv_invalid_value)
1274      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1275    break;
1276  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1277  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1278  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1279  }
1280}
1281
1282static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1283                                  Diagnostic &Diags) {
1284  using namespace cc1options;
1285  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1286  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1287  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1288      Opts.TokenCache = A->getValue(Args);
1289  else
1290    Opts.TokenCache = Opts.ImplicitPTHInclude;
1291  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1292  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1293  // Add macros from the command line.
1294  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1295         ie = Args.filtered_end(); it != ie; ++it) {
1296    if (it->getOption().matches(OPT_D))
1297      Opts.addMacroDef(it->getValue(Args));
1298    else
1299      Opts.addMacroUndef(it->getValue(Args));
1300  }
1301
1302  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1303
1304  // Add the ordered list of -includes.
1305  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1306                                             OPT_include_pth),
1307         ie = Args.filtered_end(); it != ie; ++it) {
1308    // PCH is handled specially, we need to extra the original include path.
1309    if (it->getOption().matches(OPT_include_pch)) {
1310      std::string OriginalFile =
1311        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1312      if (OriginalFile.empty())
1313        continue;
1314
1315      Opts.Includes.push_back(OriginalFile);
1316    } else
1317      Opts.Includes.push_back(it->getValue(Args));
1318  }
1319
1320  // Include 'altivec.h' if -faltivec option present
1321  if (Args.hasArg(OPT_faltivec))
1322    Opts.Includes.push_back("altivec.h");
1323
1324  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1325         ie = Args.filtered_end(); it != ie; ++it) {
1326    std::pair<llvm::StringRef,llvm::StringRef> Split =
1327      llvm::StringRef(it->getValue(Args)).split(';');
1328
1329    if (Split.second.empty()) {
1330      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1331      continue;
1332    }
1333
1334    Opts.addRemappedFile(Split.first, Split.second);
1335  }
1336}
1337
1338static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1339                                        ArgList &Args) {
1340  using namespace cc1options;
1341  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1342  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1343  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1344  Opts.ShowComments = Args.hasArg(OPT_C);
1345  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1346}
1347
1348static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1349  using namespace cc1options;
1350  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1351  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1352  Opts.Triple = getLastArgValue(Args, OPT_triple);
1353  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1354
1355  // Use the host triple if unspecified.
1356  if (Opts.Triple.empty())
1357    Opts.Triple = llvm::sys::getHostTriple();
1358}
1359
1360//
1361
1362void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1363                                        const char **ArgBegin,
1364                                        const char **ArgEnd,
1365                                        Diagnostic &Diags) {
1366  // Parse the arguments.
1367  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1368  unsigned MissingArgIndex, MissingArgCount;
1369  llvm::OwningPtr<InputArgList> Args(
1370    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1371
1372  // Check for missing argument error.
1373  if (MissingArgCount)
1374    Diags.Report(diag::err_drv_missing_argument)
1375      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1376
1377  // Issue errors on unknown arguments.
1378  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1379         ie = Args->filtered_end(); it != ie; ++it)
1380    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1381
1382  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1383  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1384  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1385  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1386  FrontendOptions::InputKind DashX =
1387    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1388  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1389  if (DashX != FrontendOptions::IK_AST)
1390    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1391  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1392  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1393  ParseTargetArgs(Res.getTargetOpts(), *Args);
1394}
1395