CompilerInvocation.cpp revision 207632 
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.MacroBacktraceLimit
251                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
252    Res.push_back("-fmacro-backtrace-limit");
253    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
254  }
255  if (Opts.TemplateBacktraceLimit
256                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
257    Res.push_back("-ftemplate-backtrace-limit");
258    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
259  }
260
261  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
262    Res.push_back("-ftabstop");
263    Res.push_back(llvm::utostr(Opts.TabStop));
264  }
265  if (Opts.MessageLength) {
266    Res.push_back("-fmessage-length");
267    Res.push_back(llvm::utostr(Opts.MessageLength));
268  }
269  if (!Opts.DumpBuildInformation.empty()) {
270    Res.push_back("-dump-build-information");
271    Res.push_back(Opts.DumpBuildInformation);
272  }
273  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
274    Res.push_back("-W" + Opts.Warnings[i]);
275}
276
277static const char *getInputKindName(FrontendOptions::InputKind Kind) {
278  switch (Kind) {
279  case FrontendOptions::IK_None:              break;
280  case FrontendOptions::IK_AST:               return "ast";
281  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
282  case FrontendOptions::IK_C:                 return "c";
283  case FrontendOptions::IK_CXX:               return "c++";
284  case FrontendOptions::IK_ObjC:              return "objective-c";
285  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
286  case FrontendOptions::IK_OpenCL:            return "cl";
287  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
288  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
289  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
290  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
291  }
292
293  llvm_unreachable("Unexpected language kind!");
294  return 0;
295}
296
297static const char *getActionName(frontend::ActionKind Kind) {
298  switch (Kind) {
299  case frontend::PluginAction:
300  case frontend::InheritanceView:
301    llvm_unreachable("Invalid kind!");
302
303  case frontend::ASTDump:                return "-ast-dump";
304  case frontend::ASTPrint:               return "-ast-print";
305  case frontend::ASTPrintXML:            return "-ast-print-xml";
306  case frontend::ASTView:                return "-ast-view";
307  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
308  case frontend::DumpTokens:             return "-dump-tokens";
309  case frontend::EmitAssembly:           return "-S";
310  case frontend::EmitBC:                 return "-emit-llvm-bc";
311  case frontend::EmitHTML:               return "-emit-html";
312  case frontend::EmitLLVM:               return "-emit-llvm";
313  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
314  case frontend::EmitObj:                return "-emit-obj";
315  case frontend::FixIt:                  return "-fixit";
316  case frontend::GeneratePCH:            return "-emit-pch";
317  case frontend::GeneratePTH:            return "-emit-pth";
318  case frontend::InitOnly:               return "-init-only";
319  case frontend::ParseNoop:              return "-parse-noop";
320  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
321  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
322  case frontend::PrintDeclContext:       return "-print-decl-contexts";
323  case frontend::PrintPreprocessedInput: return "-E";
324  case frontend::RewriteMacros:          return "-rewrite-macros";
325  case frontend::RewriteObjC:            return "-rewrite-objc";
326  case frontend::RewriteTest:            return "-rewrite-test";
327  case frontend::RunAnalysis:            return "-analyze";
328  case frontend::RunPreprocessorOnly:    return "-Eonly";
329  }
330
331  llvm_unreachable("Unexpected language kind!");
332  return 0;
333}
334
335static void FrontendOptsToArgs(const FrontendOptions &Opts,
336                               std::vector<std::string> &Res) {
337  if (!Opts.DebugCodeCompletionPrinter)
338    Res.push_back("-no-code-completion-debug-printer");
339  if (Opts.DisableFree)
340    Res.push_back("-disable-free");
341  if (Opts.RelocatablePCH)
342    Res.push_back("-relocatable-pch");
343  if (Opts.ShowHelp)
344    Res.push_back("-help");
345  if (Opts.ShowMacrosInCodeCompletion)
346    Res.push_back("-code-completion-macros");
347  if (Opts.ShowStats)
348    Res.push_back("-print-stats");
349  if (Opts.ShowTimers)
350    Res.push_back("-ftime-report");
351  if (Opts.ShowVersion)
352    Res.push_back("-version");
353
354  bool NeedLang = false;
355  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
356    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
357        Opts.Inputs[i].first)
358      NeedLang = true;
359  if (NeedLang) {
360    Res.push_back("-x");
361    Res.push_back(getInputKindName(Opts.Inputs[0].first));
362  }
363  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
364    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
365           "Unable to represent this input vector!");
366    Res.push_back(Opts.Inputs[i].second);
367  }
368
369  if (!Opts.OutputFile.empty()) {
370    Res.push_back("-o");
371    Res.push_back(Opts.OutputFile);
372  }
373  if (!Opts.ViewClassInheritance.empty()) {
374    Res.push_back("-cxx-inheritance-view");
375    Res.push_back(Opts.ViewClassInheritance);
376  }
377  if (!Opts.CodeCompletionAt.FileName.empty()) {
378    Res.push_back("-code-completion-at");
379    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
380                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
381                  llvm::utostr(Opts.CodeCompletionAt.Column));
382  }
383  if (Opts.ProgramAction != frontend::InheritanceView &&
384      Opts.ProgramAction != frontend::PluginAction)
385    Res.push_back(getActionName(Opts.ProgramAction));
386  if (!Opts.ActionName.empty()) {
387    Res.push_back("-plugin");
388    Res.push_back(Opts.ActionName);
389  }
390  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
391    Res.push_back("-load");
392    Res.push_back(Opts.Plugins[i]);
393  }
394  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
395    Res.push_back("-ast-merge");
396    Res.push_back(Opts.ASTMergeFiles[i]);
397  }
398  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
399    Res.push_back("-mllvm");
400    Res.push_back(Opts.LLVMArgs[i]);
401  }
402}
403
404static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
405                                   std::vector<std::string> &Res) {
406  if (Opts.Sysroot != "/") {
407    Res.push_back("-isysroot");
408    Res.push_back(Opts.Sysroot);
409  }
410
411  /// User specified include entries.
412  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
413    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
414    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
415      llvm::report_fatal_error("Invalid option set!");
416    if (E.IsUserSupplied) {
417      if (E.Group == frontend::After) {
418        Res.push_back("-idirafter");
419      } else if (E.Group == frontend::Quoted) {
420        Res.push_back("-iquote");
421      } else if (E.Group == frontend::System) {
422        Res.push_back("-isystem");
423      } else {
424        assert(E.Group == frontend::Angled && "Invalid group!");
425        Res.push_back(E.IsFramework ? "-F" : "-I");
426      }
427    } else {
428      if (E.Group != frontend::Angled && E.Group != frontend::System)
429        llvm::report_fatal_error("Invalid option set!");
430      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
431                    "-iwithprefix");
432    }
433    Res.push_back(E.Path);
434  }
435
436  if (!Opts.EnvIncPath.empty()) {
437    // FIXME: Provide an option for this, and move env detection to driver.
438    llvm::report_fatal_error("Not yet implemented!");
439  }
440  if (!Opts.CEnvIncPath.empty()) {
441    // FIXME: Provide an option for this, and move env detection to driver.
442    llvm::report_fatal_error("Not yet implemented!");
443  }
444  if (!Opts.ObjCEnvIncPath.empty()) {
445    // FIXME: Provide an option for this, and move env detection to driver.
446    llvm::report_fatal_error("Not yet implemented!");
447  }
448  if (!Opts.CXXEnvIncPath.empty()) {
449    // FIXME: Provide an option for this, and move env detection to driver.
450    llvm::report_fatal_error("Not yet implemented!");
451  }
452  if (!Opts.ObjCXXEnvIncPath.empty()) {
453    // FIXME: Provide an option for this, and move env detection to driver.
454    llvm::report_fatal_error("Not yet implemented!");
455  }
456  if (!Opts.ResourceDir.empty()) {
457    Res.push_back("-resource-dir");
458    Res.push_back(Opts.ResourceDir);
459  }
460  if (!Opts.UseStandardIncludes)
461    Res.push_back("-nostdinc");
462  if (!Opts.UseStandardCXXIncludes)
463    Res.push_back("-nostdinc++");
464  if (Opts.Verbose)
465    Res.push_back("-v");
466}
467
468static void LangOptsToArgs(const LangOptions &Opts,
469                           std::vector<std::string> &Res) {
470  LangOptions DefaultLangOpts;
471
472  // FIXME: Need to set -std to get all the implicit options.
473
474  // FIXME: We want to only pass options relative to the defaults, which
475  // requires constructing a target. :(
476  //
477  // It would be better to push the all target specific choices into the driver,
478  // so that everything below that was more uniform.
479
480  if (Opts.Trigraphs)
481    Res.push_back("-trigraphs");
482  // Implicit based on the input kind:
483  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
484  // Implicit based on the input language standard:
485  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
486  if (Opts.DollarIdents)
487    Res.push_back("-fdollars-in-identifiers");
488  if (Opts.GNUMode && !Opts.GNUKeywords)
489    Res.push_back("-fno-gnu-keywords");
490  if (!Opts.GNUMode && Opts.GNUKeywords)
491    Res.push_back("-fgnu-keywords");
492  if (Opts.Microsoft)
493    Res.push_back("-fms-extensions");
494  if (Opts.ObjCNonFragileABI)
495    Res.push_back("-fobjc-nonfragile-abi");
496  if (Opts.ObjCNonFragileABI2)
497    Res.push_back("-fobjc-nonfragile-abi2");
498  // NoInline is implicit.
499  if (!Opts.CXXOperatorNames)
500    Res.push_back("-fno-operator-names");
501  if (Opts.PascalStrings)
502    Res.push_back("-fpascal-strings");
503  if (Opts.CatchUndefined)
504    Res.push_back("-fcatch-undefined-behavior");
505  if (Opts.WritableStrings)
506    Res.push_back("-fwritable-strings");
507  if (Opts.ConstStrings)
508    Res.push_back("-Wwrite-strings");
509  if (!Opts.LaxVectorConversions)
510    Res.push_back("-fno-lax-vector-conversions");
511  if (Opts.AltiVec)
512    Res.push_back("-faltivec");
513  if (Opts.Exceptions)
514    Res.push_back("-fexceptions");
515  if (Opts.SjLjExceptions)
516    Res.push_back("-fsjlj-exceptions");
517  if (!Opts.RTTI)
518    Res.push_back("-fno-rtti");
519  if (!Opts.NeXTRuntime)
520    Res.push_back("-fgnu-runtime");
521  if (Opts.Freestanding)
522    Res.push_back("-ffreestanding");
523  if (Opts.NoBuiltin)
524    Res.push_back("-fno-builtin");
525  if (!Opts.AssumeSaneOperatorNew)
526    Res.push_back("-fno-assume-sane-operator-new");
527  if (!Opts.ThreadsafeStatics)
528    Res.push_back("-fno-threadsafe-statics");
529  if (Opts.POSIXThreads)
530    Res.push_back("-pthread");
531  if (Opts.Blocks)
532    Res.push_back("-fblocks");
533  if (Opts.EmitAllDecls)
534    Res.push_back("-femit-all-decls");
535  if (Opts.MathErrno)
536    Res.push_back("-fmath-errno");
537  if (Opts.OverflowChecking)
538    Res.push_back("-ftrapv");
539  if (Opts.HeinousExtensions)
540    Res.push_back("-fheinous-gnu-extensions");
541  // Optimize is implicit.
542  // OptimizeSize is implicit.
543  if (Opts.Static)
544    Res.push_back("-static-define");
545  if (Opts.DumpRecordLayouts)
546    Res.push_back("-fdump-record-layouts");
547  if (Opts.DumpVTableLayouts)
548    Res.push_back("-fdump-vtable-layouts");
549  if (Opts.NoBitFieldTypeAlign)
550    Res.push_back("-fno-bitfield-type-alignment");
551  if (Opts.SjLjExceptions)
552    Res.push_back("-fsjlj-exceptions");
553  if (Opts.PICLevel) {
554    Res.push_back("-pic-level");
555    Res.push_back(llvm::utostr(Opts.PICLevel));
556  }
557  if (Opts.ObjCGCBitmapPrint)
558    Res.push_back("-print-ivar-layout");
559  if (Opts.NoConstantCFStrings)
560    Res.push_back("-fno-constant-cfstrings");
561  if (!Opts.AccessControl)
562    Res.push_back("-fno-access-control");
563  if (!Opts.CharIsSigned)
564    Res.push_back("-fno-signed-char");
565  if (Opts.ShortWChar)
566    Res.push_back("-fshort-wchar");
567  if (!Opts.ElideConstructors)
568    Res.push_back("-fno-elide-constructors");
569  if (Opts.getGCMode() != LangOptions::NonGC) {
570    if (Opts.getGCMode() == LangOptions::HybridGC) {
571      Res.push_back("-fobjc-gc");
572    } else {
573      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
574      Res.push_back("-fobjc-gc-only");
575    }
576  }
577  if (Opts.getVisibilityMode() != LangOptions::Default) {
578    Res.push_back("-fvisibility");
579    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
580      Res.push_back("hidden");
581    } else {
582      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
583             "Invalid visibility!");
584      Res.push_back("protected");
585    }
586  }
587  if (Opts.getStackProtectorMode() != 0) {
588    Res.push_back("-stack-protector");
589    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
590  }
591  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
592    Res.push_back("-ftemplate-depth");
593    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
594  }
595  if (!Opts.ObjCConstantStringClass.empty()) {
596    Res.push_back("-fconstant-string-class");
597    Res.push_back(Opts.ObjCConstantStringClass);
598  }
599}
600
601static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
602                                   std::vector<std::string> &Res) {
603  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
604    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
605                  Opts.Macros[i].first);
606  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
607    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
608    Res.push_back("-include");
609    Res.push_back(Opts.Includes[i]);
610  }
611  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
612    Res.push_back("-imacros");
613    Res.push_back(Opts.MacroIncludes[i]);
614  }
615  if (!Opts.UsePredefines)
616    Res.push_back("-undef");
617  if (Opts.DetailedRecord)
618    Res.push_back("-detailed-preprocessing-record");
619  if (!Opts.ImplicitPCHInclude.empty()) {
620    Res.push_back("-include-pch");
621    Res.push_back(Opts.ImplicitPCHInclude);
622  }
623  if (!Opts.ImplicitPTHInclude.empty()) {
624    Res.push_back("-include-pth");
625    Res.push_back(Opts.ImplicitPTHInclude);
626  }
627  if (!Opts.TokenCache.empty()) {
628    if (Opts.ImplicitPTHInclude.empty()) {
629      Res.push_back("-token-cache");
630      Res.push_back(Opts.TokenCache);
631    } else
632      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
633             "Unsupported option combination!");
634  }
635  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
636    Res.push_back("-remap-file");
637    Res.push_back(Opts.RemappedFiles[i].first + ";" +
638                  Opts.RemappedFiles[i].second);
639  }
640}
641
642static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
643                                         std::vector<std::string> &Res) {
644  if (!Opts.ShowCPP && !Opts.ShowMacros)
645    llvm::report_fatal_error("Invalid option combination!");
646
647  if (Opts.ShowCPP && Opts.ShowMacros)
648    Res.push_back("-dD");
649  else if (!Opts.ShowCPP && Opts.ShowMacros)
650    Res.push_back("-dM");
651
652  if (!Opts.ShowLineMarkers)
653    Res.push_back("-P");
654  if (Opts.ShowComments)
655    Res.push_back("-C");
656  if (Opts.ShowMacroComments)
657    Res.push_back("-CC");
658}
659
660static void TargetOptsToArgs(const TargetOptions &Opts,
661                             std::vector<std::string> &Res) {
662  Res.push_back("-triple");
663  Res.push_back(Opts.Triple);
664  if (!Opts.CPU.empty()) {
665    Res.push_back("-target-cpu");
666    Res.push_back(Opts.CPU);
667  }
668  if (!Opts.ABI.empty()) {
669    Res.push_back("-target-abi");
670    Res.push_back(Opts.ABI);
671  }
672  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
673    Res.push_back("-target-feature");
674    Res.push_back(Opts.Features[i]);
675  }
676}
677
678void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
679  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
680  CodeGenOptsToArgs(getCodeGenOpts(), Res);
681  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
682  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
683  FrontendOptsToArgs(getFrontendOpts(), Res);
684  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
685  LangOptsToArgs(getLangOpts(), Res);
686  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
687  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
688  TargetOptsToArgs(getTargetOpts(), Res);
689}
690
691//===----------------------------------------------------------------------===//
692// Deserialization (to args)
693//===----------------------------------------------------------------------===//
694
695using namespace clang::driver;
696using namespace clang::driver::cc1options;
697
698static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
699                                       llvm::StringRef Default = "") {
700  if (Arg *A = Args.getLastArg(ID))
701    return A->getValue(Args);
702  return Default;
703}
704
705static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
706                              int Default, Diagnostic &Diags) {
707  Arg *A = Args.getLastArg(ID);
708  if (!A)
709    return Default;
710
711  int Res = Default;
712  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
713    Diags.Report(diag::err_drv_invalid_int_value)
714        << A->getAsString(Args) << A->getValue(Args);
715
716  return Res;
717}
718
719static std::vector<std::string>
720getAllArgValues(ArgList &Args, cc1options::ID ID) {
721  llvm::SmallVector<const char *, 16> Values;
722  Args.AddAllArgValues(Values, ID);
723  return std::vector<std::string>(Values.begin(), Values.end());
724}
725
726//
727
728static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
729                              Diagnostic &Diags) {
730  using namespace cc1options;
731
732  Opts.AnalysisList.clear();
733#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
734  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
735#include "clang/Frontend/Analyses.def"
736
737  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
738    llvm::StringRef Name = A->getValue(Args);
739    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
740#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
741      .Case(CMDFLAG, NAME##Model)
742#include "clang/Frontend/Analyses.def"
743      .Default(NumStores);
744    // FIXME: Error handling.
745    if (Value == NumStores)
746      Diags.Report(diag::err_drv_invalid_value)
747        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
748    else
749      Opts.AnalysisStoreOpt = Value;
750  }
751
752  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
753    llvm::StringRef Name = A->getValue(Args);
754    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
755#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
756      .Case(CMDFLAG, NAME##Model)
757#include "clang/Frontend/Analyses.def"
758      .Default(NumConstraints);
759    // FIXME: Error handling.
760    if (Value == NumConstraints)
761      Diags.Report(diag::err_drv_invalid_value)
762        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
763    else
764      Opts.AnalysisConstraintsOpt = Value;
765  }
766
767  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
768    llvm::StringRef Name = A->getValue(Args);
769    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
770#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
771      .Case(CMDFLAG, PD_##NAME)
772#include "clang/Frontend/Analyses.def"
773      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
774    // FIXME: Error handling.
775    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
776      Diags.Report(diag::err_drv_invalid_value)
777        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
778    else
779      Opts.AnalysisDiagOpt = Value;
780  }
781
782  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
783  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
784  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
785  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
786  Opts.AnalyzeNestedBlocks =
787    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
788  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
789  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
790  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
791  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
792  Opts.EnableExperimentalInternalChecks =
793    Args.hasArg(OPT_analyzer_experimental_internal_checks);
794  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
795  Opts.MaxNodes = getLastArgIntValue(Args, OPT_analyzer_max_nodes,150000,Diags);
796}
797
798static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
799                             Diagnostic &Diags) {
800  using namespace cc1options;
801  // -Os implies -O2
802  if (Args.hasArg(OPT_Os))
803    Opts.OptimizationLevel = 2;
804  else {
805    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
806    if (Opts.OptimizationLevel > 3) {
807      Diags.Report(diag::err_drv_invalid_value)
808        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
809      Opts.OptimizationLevel = 3;
810    }
811  }
812
813  // We must always run at least the always inlining pass.
814  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
815    : CodeGenOptions::OnlyAlwaysInlining;
816
817  Opts.DebugInfo = Args.hasArg(OPT_g);
818  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
819  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
820  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
821  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
822  Opts.NoCommon = Args.hasArg(OPT_fno_common);
823  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
824  Opts.OptimizeSize = Args.hasArg(OPT_Os);
825  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
826
827  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
828  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
829  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
830  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
831  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
832  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
833  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
834  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
835  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
836  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
837  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
838  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
839
840  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
841  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
842
843  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
844  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
845
846  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
847    llvm::StringRef Name = A->getValue(Args);
848    unsigned Method = llvm::StringSwitch<unsigned>(Name)
849      .Case("legacy", CodeGenOptions::Legacy)
850      .Case("non-legacy", CodeGenOptions::NonLegacy)
851      .Case("mixed", CodeGenOptions::Mixed)
852      .Default(~0U);
853    if (Method == ~0U)
854      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
855    else
856      Opts.ObjCDispatchMethod = Method;
857  }
858}
859
860static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
861                                      ArgList &Args) {
862  using namespace cc1options;
863  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
864  Opts.Targets = getAllArgValues(Args, OPT_MT);
865  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
866  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
867}
868
869static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
870                                Diagnostic &Diags) {
871  using namespace cc1options;
872  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
873  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
874  Opts.Pedantic = Args.hasArg(OPT_pedantic);
875  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
876  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
877  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
878  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
879  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
880  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
881  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
882  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
883  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
884  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
885  Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
886  Opts.MacroBacktraceLimit
887    = getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
888                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
889  Opts.TemplateBacktraceLimit
890    = getLastArgIntValue(Args, OPT_ftemplate_backtrace_limit,
891                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
892                         Diags);
893  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
894                                    DiagnosticOptions::DefaultTabStop, Diags);
895  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
896    Diags.Report(diag::warn_ignoring_ftabstop_value)
897      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
898    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
899  }
900  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
901  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
902  Opts.Warnings = getAllArgValues(Args, OPT_W);
903}
904
905static FrontendOptions::InputKind
906ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
907  using namespace cc1options;
908  Opts.ProgramAction = frontend::ParseSyntaxOnly;
909  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
910    switch (A->getOption().getID()) {
911    default:
912      assert(0 && "Invalid option in group!");
913    case OPT_ast_dump:
914      Opts.ProgramAction = frontend::ASTDump; break;
915    case OPT_ast_print:
916      Opts.ProgramAction = frontend::ASTPrint; break;
917    case OPT_ast_print_xml:
918      Opts.ProgramAction = frontend::ASTPrintXML; break;
919    case OPT_ast_view:
920      Opts.ProgramAction = frontend::ASTView; break;
921    case OPT_dump_raw_tokens:
922      Opts.ProgramAction = frontend::DumpRawTokens; break;
923    case OPT_dump_tokens:
924      Opts.ProgramAction = frontend::DumpTokens; break;
925    case OPT_S:
926      Opts.ProgramAction = frontend::EmitAssembly; break;
927    case OPT_emit_llvm_bc:
928      Opts.ProgramAction = frontend::EmitBC; break;
929    case OPT_emit_html:
930      Opts.ProgramAction = frontend::EmitHTML; break;
931    case OPT_emit_llvm:
932      Opts.ProgramAction = frontend::EmitLLVM; break;
933    case OPT_emit_llvm_only:
934      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
935    case OPT_emit_obj:
936      Opts.ProgramAction = frontend::EmitObj; break;
937    case OPT_fixit_EQ:
938      Opts.FixItSuffix = A->getValue(Args);
939      // fall-through!
940    case OPT_fixit:
941      Opts.ProgramAction = frontend::FixIt; break;
942    case OPT_emit_pch:
943      Opts.ProgramAction = frontend::GeneratePCH; break;
944    case OPT_emit_pth:
945      Opts.ProgramAction = frontend::GeneratePTH; break;
946    case OPT_init_only:
947      Opts.ProgramAction = frontend::InitOnly; break;
948    case OPT_parse_noop:
949      Opts.ProgramAction = frontend::ParseNoop; break;
950    case OPT_parse_print_callbacks:
951      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
952    case OPT_fsyntax_only:
953      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
954    case OPT_print_decl_contexts:
955      Opts.ProgramAction = frontend::PrintDeclContext; break;
956    case OPT_E:
957      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
958    case OPT_rewrite_macros:
959      Opts.ProgramAction = frontend::RewriteMacros; break;
960    case OPT_rewrite_objc:
961      Opts.ProgramAction = frontend::RewriteObjC; break;
962    case OPT_rewrite_test:
963      Opts.ProgramAction = frontend::RewriteTest; break;
964    case OPT_analyze:
965      Opts.ProgramAction = frontend::RunAnalysis; break;
966    case OPT_Eonly:
967      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
968    }
969  }
970  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
971    Opts.ProgramAction = frontend::PluginAction;
972    Opts.ActionName = A->getValue(Args);
973  }
974
975  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
976    Opts.CodeCompletionAt =
977      ParsedSourceLocation::FromString(A->getValue(Args));
978    if (Opts.CodeCompletionAt.FileName.empty())
979      Diags.Report(diag::err_drv_invalid_value)
980        << A->getAsString(Args) << A->getValue(Args);
981  }
982  Opts.DebugCodeCompletionPrinter =
983    !Args.hasArg(OPT_no_code_completion_debug_printer);
984  Opts.DisableFree = Args.hasArg(OPT_disable_free);
985
986  Opts.OutputFile = getLastArgValue(Args, OPT_o);
987  Opts.Plugins = getAllArgValues(Args, OPT_load);
988  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
989  Opts.ShowHelp = Args.hasArg(OPT_help);
990  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
991  Opts.ShowStats = Args.hasArg(OPT_print_stats);
992  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
993  Opts.ShowVersion = Args.hasArg(OPT_version);
994  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
995  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
996  Opts.LLVMArgs = getAllArgValues(Args, OPT_mllvm);
997
998  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
999  if (const Arg *A = Args.getLastArg(OPT_x)) {
1000    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
1001      .Case("c", FrontendOptions::IK_C)
1002      .Case("cl", FrontendOptions::IK_OpenCL)
1003      .Case("c", FrontendOptions::IK_C)
1004      .Case("cl", FrontendOptions::IK_OpenCL)
1005      .Case("c++", FrontendOptions::IK_CXX)
1006      .Case("objective-c", FrontendOptions::IK_ObjC)
1007      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
1008      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
1009      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
1010      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
1011      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
1012      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1013      .Case("c-header", FrontendOptions::IK_C)
1014      .Case("objective-c-header", FrontendOptions::IK_ObjC)
1015      .Case("c++-header", FrontendOptions::IK_CXX)
1016      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1017      .Case("ast", FrontendOptions::IK_AST)
1018      .Default(FrontendOptions::IK_None);
1019    if (DashX == FrontendOptions::IK_None)
1020      Diags.Report(diag::err_drv_invalid_value)
1021        << A->getAsString(Args) << A->getValue(Args);
1022  }
1023
1024  // '-' is the default input if none is given.
1025  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
1026  Opts.Inputs.clear();
1027  if (Inputs.empty())
1028    Inputs.push_back("-");
1029  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1030    FrontendOptions::InputKind IK = DashX;
1031    if (IK == FrontendOptions::IK_None) {
1032      IK = FrontendOptions::getInputKindForExtension(
1033        llvm::StringRef(Inputs[i]).rsplit('.').second);
1034      // FIXME: Remove this hack.
1035      if (i == 0)
1036        DashX = IK;
1037    }
1038    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1039  }
1040
1041  return DashX;
1042}
1043
1044std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1045                                                 void *MainAddr) {
1046  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1047
1048  if (!P.isEmpty()) {
1049    P.eraseComponent();  // Remove /clang from foo/bin/clang
1050    P.eraseComponent();  // Remove /bin   from foo/bin
1051
1052    // Get foo/lib/clang/<version>/include
1053    P.appendComponent("lib");
1054    P.appendComponent("clang");
1055    P.appendComponent(CLANG_VERSION_STRING);
1056  }
1057
1058  return P.str();
1059}
1060
1061static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1062  using namespace cc1options;
1063  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1064  Opts.Verbose = Args.hasArg(OPT_v);
1065  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1066  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1067  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1068  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1069
1070  // Add -I... and -F... options in order.
1071  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1072         ie = Args.filtered_end(); it != ie; ++it)
1073    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1074                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1075
1076  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1077  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1078  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1079                                             OPT_iwithprefixbefore),
1080         ie = Args.filtered_end(); it != ie; ++it) {
1081    if (it->getOption().matches(OPT_iprefix))
1082      Prefix = it->getValue(Args);
1083    else if (it->getOption().matches(OPT_iwithprefix))
1084      Opts.AddPath(Prefix.str() + it->getValue(Args),
1085                   frontend::System, false, false);
1086    else
1087      Opts.AddPath(Prefix.str() + it->getValue(Args),
1088                   frontend::Angled, false, false);
1089  }
1090
1091  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1092         ie = Args.filtered_end(); it != ie; ++it)
1093    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1094  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1095         ie = Args.filtered_end(); it != ie; ++it)
1096    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1097  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1098         ie = Args.filtered_end(); it != ie; ++it)
1099    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1100
1101  // FIXME: Need options for the various environment variables!
1102}
1103
1104static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1105                          FrontendOptions::InputKind IK,
1106                          Diagnostic &Diags) {
1107  // FIXME: Cleanup per-file based stuff.
1108
1109  // Set some properties which depend soley on the input kind; it would be nice
1110  // to move these to the language standard, and have the driver resolve the
1111  // input kind + language standard.
1112  if (IK == FrontendOptions::IK_Asm) {
1113    Opts.AsmPreprocessor = 1;
1114  } else if (IK == FrontendOptions::IK_ObjC ||
1115             IK == FrontendOptions::IK_ObjCXX ||
1116             IK == FrontendOptions::IK_PreprocessedObjC ||
1117             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1118    Opts.ObjC1 = Opts.ObjC2 = 1;
1119  }
1120
1121  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1122  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1123    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1124#define LANGSTANDARD(id, name, desc, features) \
1125      .Case(name, LangStandard::lang_##id)
1126#include "clang/Frontend/LangStandards.def"
1127      .Default(LangStandard::lang_unspecified);
1128    if (LangStd == LangStandard::lang_unspecified)
1129      Diags.Report(diag::err_drv_invalid_value)
1130        << A->getAsString(Args) << A->getValue(Args);
1131  }
1132
1133  if (LangStd == LangStandard::lang_unspecified) {
1134    // Based on the base language, pick one.
1135    switch (IK) {
1136    case FrontendOptions::IK_None:
1137    case FrontendOptions::IK_AST:
1138      assert(0 && "Invalid input kind!");
1139    case FrontendOptions::IK_OpenCL:
1140      LangStd = LangStandard::lang_opencl;
1141      break;
1142    case FrontendOptions::IK_Asm:
1143    case FrontendOptions::IK_C:
1144    case FrontendOptions::IK_PreprocessedC:
1145    case FrontendOptions::IK_ObjC:
1146    case FrontendOptions::IK_PreprocessedObjC:
1147      LangStd = LangStandard::lang_gnu99;
1148      break;
1149    case FrontendOptions::IK_CXX:
1150    case FrontendOptions::IK_PreprocessedCXX:
1151    case FrontendOptions::IK_ObjCXX:
1152    case FrontendOptions::IK_PreprocessedObjCXX:
1153      LangStd = LangStandard::lang_gnucxx98;
1154      break;
1155    }
1156  }
1157
1158  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1159  Opts.BCPLComment = Std.hasBCPLComments();
1160  Opts.C99 = Std.isC99();
1161  Opts.CPlusPlus = Std.isCPlusPlus();
1162  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1163  Opts.Digraphs = Std.hasDigraphs();
1164  Opts.GNUMode = Std.isGNUMode();
1165  Opts.GNUInline = !Std.isC99();
1166  Opts.HexFloats = Std.hasHexFloats();
1167  Opts.ImplicitInt = Std.hasImplicitInt();
1168
1169  // OpenCL has some additional defaults.
1170  if (LangStd == LangStandard::lang_opencl) {
1171    Opts.OpenCL = 1;
1172    Opts.AltiVec = 1;
1173    Opts.CXXOperatorNames = 1;
1174    Opts.LaxVectorConversions = 1;
1175  }
1176
1177  // OpenCL and C++ both have bool, true, false keywords.
1178  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1179
1180  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1181  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1182  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1183  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1184  // name, as it doesn't seem a useful distinction.
1185  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1186                                  Opts.GNUMode);
1187
1188  if (Opts.CPlusPlus)
1189    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1190
1191  if (Args.hasArg(OPT_fobjc_gc_only))
1192    Opts.setGCMode(LangOptions::GCOnly);
1193  else if (Args.hasArg(OPT_fobjc_gc))
1194    Opts.setGCMode(LangOptions::HybridGC);
1195
1196  if (Args.hasArg(OPT_print_ivar_layout))
1197    Opts.ObjCGCBitmapPrint = 1;
1198  if (Args.hasArg(OPT_fno_constant_cfstrings))
1199    Opts.NoConstantCFStrings = 1;
1200
1201  if (Args.hasArg(OPT_faltivec))
1202    Opts.AltiVec = 1;
1203
1204  if (Args.hasArg(OPT_pthread))
1205    Opts.POSIXThreads = 1;
1206
1207  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1208                                        "default");
1209  if (Vis == "default")
1210    Opts.setVisibilityMode(LangOptions::Default);
1211  else if (Vis == "hidden")
1212    Opts.setVisibilityMode(LangOptions::Hidden);
1213  else if (Vis == "protected")
1214    Opts.setVisibilityMode(LangOptions::Protected);
1215  else
1216    Diags.Report(diag::err_drv_invalid_value)
1217      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1218
1219  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1220
1221  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1222  // is specified, or -std is set to a conforming mode.
1223  Opts.Trigraphs = !Opts.GNUMode;
1224  if (Args.hasArg(OPT_trigraphs))
1225    Opts.Trigraphs = 1;
1226
1227  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1228                                   OPT_fno_dollars_in_identifiers,
1229                                   !Opts.AsmPreprocessor);
1230  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1231  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1232  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1233  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1234  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1235    Opts.LaxVectorConversions = 0;
1236  if (Args.hasArg(OPT_fno_threadsafe_statics))
1237    Opts.ThreadsafeStatics = 0;
1238  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1239  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1240  Opts.Blocks = Args.hasArg(OPT_fblocks);
1241  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1242  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1243  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1244  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1245  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1246  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1247  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1248  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1249  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1250  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 1024,
1251                                               Diags);
1252  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1253  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1254                                                 OPT_fconstant_string_class);
1255  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1256  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1257  if (Opts.ObjCNonFragileABI2)
1258    Opts.ObjCNonFragileABI = true;
1259  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1260  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1261  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1262  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1263  Opts.Static = Args.hasArg(OPT_static_define);
1264  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1265  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1266  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1267  Opts.OptimizeSize = 0;
1268
1269  // FIXME: Eliminate this dependency.
1270  unsigned Opt =
1271    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1272  Opts.Optimize = Opt != 0;
1273
1274  // This is the __NO_INLINE__ define, which just depends on things like the
1275  // optimization level and -fno-inline, not actually whether the backend has
1276  // inlining enabled.
1277  //
1278  // FIXME: This is affected by other options (-fno-inline).
1279  Opts.NoInline = !Opt;
1280
1281  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1282  switch (SSP) {
1283  default:
1284    Diags.Report(diag::err_drv_invalid_value)
1285      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1286    break;
1287  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1288  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1289  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1290  }
1291}
1292
1293static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1294                                  Diagnostic &Diags) {
1295  using namespace cc1options;
1296  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1297  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1298  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1299      Opts.TokenCache = A->getValue(Args);
1300  else
1301    Opts.TokenCache = Opts.ImplicitPTHInclude;
1302  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1303  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1304  // Add macros from the command line.
1305  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1306         ie = Args.filtered_end(); it != ie; ++it) {
1307    if (it->getOption().matches(OPT_D))
1308      Opts.addMacroDef(it->getValue(Args));
1309    else
1310      Opts.addMacroUndef(it->getValue(Args));
1311  }
1312
1313  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1314
1315  // Add the ordered list of -includes.
1316  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1317                                             OPT_include_pth),
1318         ie = Args.filtered_end(); it != ie; ++it) {
1319    // PCH is handled specially, we need to extra the original include path.
1320    if (it->getOption().matches(OPT_include_pch)) {
1321      std::string OriginalFile =
1322        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1323      if (OriginalFile.empty())
1324        continue;
1325
1326      Opts.Includes.push_back(OriginalFile);
1327    } else
1328      Opts.Includes.push_back(it->getValue(Args));
1329  }
1330
1331  // Include 'altivec.h' if -faltivec option present
1332  if (Args.hasArg(OPT_faltivec))
1333    Opts.Includes.push_back("altivec.h");
1334
1335  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1336         ie = Args.filtered_end(); it != ie; ++it) {
1337    std::pair<llvm::StringRef,llvm::StringRef> Split =
1338      llvm::StringRef(it->getValue(Args)).split(';');
1339
1340    if (Split.second.empty()) {
1341      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1342      continue;
1343    }
1344
1345    Opts.addRemappedFile(Split.first, Split.second);
1346  }
1347}
1348
1349static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1350                                        ArgList &Args) {
1351  using namespace cc1options;
1352  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1353  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1354  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1355  Opts.ShowComments = Args.hasArg(OPT_C);
1356  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1357}
1358
1359static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1360  using namespace cc1options;
1361  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1362  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1363  Opts.Triple = getLastArgValue(Args, OPT_triple);
1364  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1365
1366  // Use the host triple if unspecified.
1367  if (Opts.Triple.empty())
1368    Opts.Triple = llvm::sys::getHostTriple();
1369}
1370
1371//
1372
1373void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1374                                        const char **ArgBegin,
1375                                        const char **ArgEnd,
1376                                        Diagnostic &Diags) {
1377  // Parse the arguments.
1378  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1379  unsigned MissingArgIndex, MissingArgCount;
1380  llvm::OwningPtr<InputArgList> Args(
1381    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1382
1383  // Check for missing argument error.
1384  if (MissingArgCount)
1385    Diags.Report(diag::err_drv_missing_argument)
1386      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1387
1388  // Issue errors on unknown arguments.
1389  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1390         ie = Args->filtered_end(); it != ie; ++it)
1391    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1392
1393  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1394  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1395  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1396  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1397  FrontendOptions::InputKind DashX =
1398    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1399  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1400  if (DashX != FrontendOptions::IK_AST)
1401    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1402  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1403  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1404  ParseTargetArgs(Res.getTargetOpts(), *Args);
1405}
1406