CompilerInvocation.cpp revision 9f6d068b29ea2f6276f1105c71d9e768201f2b88 
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/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
33//===----------------------------------------------------------------------===//
34// Initialization.
35//===----------------------------------------------------------------------===//
36
37CompilerInvocationBase::CompilerInvocationBase()
38  : LangOpts(new LangOptions()) {}
39
40CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
41  : llvm::RefCountedBase<CompilerInvocation>(),
42    LangOpts(new LangOptions(*X.getLangOpts())) {}
43
44//===----------------------------------------------------------------------===//
45// Utility functions.
46//===----------------------------------------------------------------------===//
47
48static const char *getAnalysisStoreName(AnalysisStores Kind) {
49  switch (Kind) {
50  default:
51    llvm_unreachable("Unknown analysis store!");
52#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
53  case NAME##Model: return CMDFLAG;
54#include "clang/Frontend/Analyses.def"
55  }
56}
57
58static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
59  switch (Kind) {
60  default:
61    llvm_unreachable("Unknown analysis constraints!");
62#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
63  case NAME##Model: return CMDFLAG;
64#include "clang/Frontend/Analyses.def"
65  }
66}
67
68static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
69  switch (Kind) {
70  default:
71    llvm_unreachable("Unknown analysis client!");
72#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
73  case PD_##NAME: return CMDFLAG;
74#include "clang/Frontend/Analyses.def"
75  }
76}
77
78static const char *getAnalysisPurgeModeName(AnalysisPurgeMode Kind) {
79  switch (Kind) {
80  default:
81    llvm_unreachable("Unknown analysis client!");
82#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
83  case NAME: return CMDFLAG;
84#include "clang/Frontend/Analyses.def"
85  }
86}
87
88//===----------------------------------------------------------------------===//
89// Serialization (to args)
90//===----------------------------------------------------------------------===//
91
92static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
93                               std::vector<std::string> &Res) {
94  if (Opts.ShowCheckerHelp)
95    Res.push_back("-analyzer-checker-help");
96  if (Opts.AnalysisStoreOpt != RegionStoreModel) {
97    Res.push_back("-analyzer-store");
98    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
99  }
100  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
101    Res.push_back("-analyzer-constraints");
102    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
103  }
104  if (Opts.AnalysisDiagOpt != PD_HTML) {
105    Res.push_back("-analyzer-output");
106    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
107  }
108  if (Opts.AnalysisPurgeOpt != PurgeStmt) {
109    Res.push_back("-analyzer-purge");
110    Res.push_back(getAnalysisPurgeModeName(Opts.AnalysisPurgeOpt));
111  }
112  if (!Opts.AnalyzeSpecificFunction.empty()) {
113    Res.push_back("-analyze-function");
114    Res.push_back(Opts.AnalyzeSpecificFunction);
115  }
116  if (Opts.AnalyzeAll)
117    Res.push_back("-analyzer-opt-analyze-headers");
118  if (Opts.AnalyzerDisplayProgress)
119    Res.push_back("-analyzer-display-progress");
120  if (Opts.AnalyzeNestedBlocks)
121    Res.push_back("-analyzer-opt-analyze-nested-blocks");
122  if (Opts.EagerlyAssume)
123    Res.push_back("-analyzer-eagerly-assume");
124  if (Opts.TrimGraph)
125    Res.push_back("-trim-egraph");
126  if (Opts.VisualizeEGDot)
127    Res.push_back("-analyzer-viz-egraph-graphviz");
128  if (Opts.VisualizeEGUbi)
129    Res.push_back("-analyzer-viz-egraph-ubigraph");
130
131  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
132    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
133    if (opt.second)
134      Res.push_back("-analyzer-disable-checker");
135    else
136      Res.push_back("-analyzer-checker");
137    Res.push_back(opt.first);
138  }
139}
140
141static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
142                              std::vector<std::string> &Res) {
143  if (Opts.DebugInfo)
144    Res.push_back("-g");
145  if (Opts.DisableLLVMOpts)
146    Res.push_back("-disable-llvm-optzns");
147  if (Opts.DisableRedZone)
148    Res.push_back("-disable-red-zone");
149  if (!Opts.DebugCompilationDir.empty()) {
150    Res.push_back("-fdebug-compilation-dir");
151    Res.push_back(Opts.DebugCompilationDir);
152  }
153  if (!Opts.DwarfDebugFlags.empty()) {
154    Res.push_back("-dwarf-debug-flags");
155    Res.push_back(Opts.DwarfDebugFlags);
156  }
157  if (Opts.ObjCRuntimeHasARC)
158    Res.push_back("-fobjc-runtime-has-arc");
159  if (Opts.ObjCRuntimeHasTerminate)
160    Res.push_back("-fobjc-runtime-has-terminate");
161  if (Opts.EmitGcovArcs)
162    Res.push_back("-femit-coverage-data");
163  if (Opts.EmitGcovNotes)
164    Res.push_back("-femit-coverage-notes");
165  if (!Opts.MergeAllConstants)
166    Res.push_back("-fno-merge-all-constants");
167  if (Opts.NoCommon)
168    Res.push_back("-fno-common");
169  if (Opts.ForbidGuardVariables)
170    Res.push_back("-fforbid-guard-variables");
171  if (Opts.UseRegisterSizedBitfieldAccess)
172    Res.push_back("-fuse-register-sized-bitfield-access");
173  if (Opts.NoImplicitFloat)
174    Res.push_back("-no-implicit-float");
175  if (Opts.OmitLeafFramePointer)
176    Res.push_back("-momit-leaf-frame-pointer");
177  if (Opts.OptimizeSize) {
178    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
179    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
180  } else if (Opts.OptimizationLevel != 0)
181    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
182  if (!Opts.MainFileName.empty()) {
183    Res.push_back("-main-file-name");
184    Res.push_back(Opts.MainFileName);
185  }
186  if (Opts.NoInfsFPMath)
187    Res.push_back("-menable-no-infinities");
188  if (Opts.NoNaNsFPMath)
189    Res.push_back("-menable-no-nans");
190  // SimplifyLibCalls is only derived.
191  // TimePasses is only derived.
192  // UnitAtATime is unused.
193  // Inlining is only derived.
194
195  // UnrollLoops is derived, but also accepts an option, no
196  // harm in pushing it back here.
197  if (Opts.UnrollLoops)
198    Res.push_back("-funroll-loops");
199  if (Opts.DataSections)
200    Res.push_back("-fdata-sections");
201  if (Opts.FunctionSections)
202    Res.push_back("-ffunction-sections");
203  if (Opts.AsmVerbose)
204    Res.push_back("-masm-verbose");
205  if (!Opts.CodeModel.empty()) {
206    Res.push_back("-mcode-model");
207    Res.push_back(Opts.CodeModel);
208  }
209  if (Opts.CUDAIsDevice)
210    Res.push_back("-fcuda-is-device");
211  if (!Opts.CXAAtExit)
212    Res.push_back("-fno-use-cxa-atexit");
213  if (Opts.CXXCtorDtorAliases)
214    Res.push_back("-mconstructor-aliases");
215  if (Opts.ObjCAutoRefCountExceptions)
216    Res.push_back("-fobjc-arc-eh");
217  if (!Opts.DebugPass.empty()) {
218    Res.push_back("-mdebug-pass");
219    Res.push_back(Opts.DebugPass);
220  }
221  if (Opts.DisableFPElim)
222    Res.push_back("-mdisable-fp-elim");
223  if (!Opts.FloatABI.empty()) {
224    Res.push_back("-mfloat-abi");
225    Res.push_back(Opts.FloatABI);
226  }
227  if (!Opts.LimitFloatPrecision.empty()) {
228    Res.push_back("-mlimit-float-precision");
229    Res.push_back(Opts.LimitFloatPrecision);
230  }
231  if (Opts.NoZeroInitializedInBSS)
232    Res.push_back("-mno-zero-initialized-bss");
233  switch (Opts.getObjCDispatchMethod()) {
234  case CodeGenOptions::Legacy:
235    break;
236  case CodeGenOptions::Mixed:
237    Res.push_back("-fobjc-dispatch-method=mixed");
238    break;
239  case CodeGenOptions::NonLegacy:
240    Res.push_back("-fobjc-dispatch-method=non-legacy");
241    break;
242  }
243  if (Opts.NumRegisterParameters) {
244    Res.push_back("-mregparm");
245    Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
246  }
247  if (Opts.NoGlobalMerge)
248    Res.push_back("-mno-global-merge");
249  if (Opts.NoExecStack)
250    Res.push_back("-mnoexecstack");
251  if (Opts.RelaxAll)
252    Res.push_back("-mrelax-all");
253  if (Opts.SaveTempLabels)
254    Res.push_back("-msave-temp-labels");
255  if (Opts.NoDwarf2CFIAsm)
256    Res.push_back("-fno-dwarf2-cfi-asm");
257  if (Opts.NoDwarfDirectoryAsm)
258    Res.push_back("-fno-dwarf-directory-asm");
259  if (Opts.SoftFloat)
260    Res.push_back("-msoft-float");
261  if (Opts.UnwindTables)
262    Res.push_back("-munwind-tables");
263  if (Opts.RelocationModel != "pic") {
264    Res.push_back("-mrelocation-model");
265    Res.push_back(Opts.RelocationModel);
266  }
267  if (!Opts.VerifyModule)
268    Res.push_back("-disable-llvm-verifier");
269  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i) {
270    Res.push_back("-backend-option");
271    Res.push_back(Opts.BackendOptions[i]);
272  }
273}
274
275static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
276                                       std::vector<std::string> &Res) {
277  if (Opts.IncludeSystemHeaders)
278    Res.push_back("-sys-header-deps");
279  if (Opts.ShowHeaderIncludes)
280    Res.push_back("-H");
281  if (!Opts.HeaderIncludeOutputFile.empty()) {
282    Res.push_back("-header-include-file");
283    Res.push_back(Opts.HeaderIncludeOutputFile);
284  }
285  if (Opts.UsePhonyTargets)
286    Res.push_back("-MP");
287  if (!Opts.OutputFile.empty()) {
288    Res.push_back("-dependency-file");
289    Res.push_back(Opts.OutputFile);
290  }
291  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
292    Res.push_back("-MT");
293    Res.push_back(Opts.Targets[i]);
294  }
295}
296
297static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
298                                 std::vector<std::string> &Res) {
299  if (Opts.IgnoreWarnings)
300    Res.push_back("-w");
301  if (Opts.NoRewriteMacros)
302    Res.push_back("-Wno-rewrite-macros");
303  if (Opts.Pedantic)
304    Res.push_back("-pedantic");
305  if (Opts.PedanticErrors)
306    Res.push_back("-pedantic-errors");
307  if (!Opts.ShowColumn)
308    Res.push_back("-fno-show-column");
309  if (!Opts.ShowLocation)
310    Res.push_back("-fno-show-source-location");
311  if (!Opts.ShowCarets)
312    Res.push_back("-fno-caret-diagnostics");
313  if (!Opts.ShowFixits)
314    Res.push_back("-fno-diagnostics-fixit-info");
315  if (Opts.ShowSourceRanges)
316    Res.push_back("-fdiagnostics-print-source-range-info");
317  if (Opts.ShowParseableFixits)
318    Res.push_back("-fdiagnostics-parseable-fixits");
319  if (Opts.ShowColors)
320    Res.push_back("-fcolor-diagnostics");
321  if (Opts.VerifyDiagnostics)
322    Res.push_back("-verify");
323  if (Opts.ShowNames)
324    Res.push_back("-fdiagnostics-show-name");
325  if (Opts.ShowOptionNames)
326    Res.push_back("-fdiagnostics-show-option");
327  if (Opts.ShowCategories == 1)
328    Res.push_back("-fdiagnostics-show-category=id");
329  else if (Opts.ShowCategories == 2)
330    Res.push_back("-fdiagnostics-show-category=name");
331  switch (Opts.Format) {
332  case DiagnosticOptions::Clang:
333    Res.push_back("-fdiagnostics-format=clang"); break;
334  case DiagnosticOptions::Msvc:
335    Res.push_back("-fdiagnostics-format=msvc");  break;
336  case DiagnosticOptions::Vi:
337    Res.push_back("-fdiagnostics-format=vi");    break;
338  }
339  if (Opts.ErrorLimit) {
340    Res.push_back("-ferror-limit");
341    Res.push_back(llvm::utostr(Opts.ErrorLimit));
342  }
343  if (!Opts.DiagnosticLogFile.empty()) {
344    Res.push_back("-diagnostic-log-file");
345    Res.push_back(Opts.DiagnosticLogFile);
346  }
347  if (Opts.MacroBacktraceLimit
348                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
349    Res.push_back("-fmacro-backtrace-limit");
350    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
351  }
352  if (Opts.TemplateBacktraceLimit
353                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
354    Res.push_back("-ftemplate-backtrace-limit");
355    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
356  }
357
358  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
359    Res.push_back("-ftabstop");
360    Res.push_back(llvm::utostr(Opts.TabStop));
361  }
362  if (Opts.MessageLength) {
363    Res.push_back("-fmessage-length");
364    Res.push_back(llvm::utostr(Opts.MessageLength));
365  }
366  if (!Opts.DumpBuildInformation.empty()) {
367    Res.push_back("-dump-build-information");
368    Res.push_back(Opts.DumpBuildInformation);
369  }
370  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
371    Res.push_back("-W" + Opts.Warnings[i]);
372}
373
374static const char *getInputKindName(InputKind Kind) {
375  switch (Kind) {
376  case IK_None:              break;
377  case IK_AST:               return "ast";
378  case IK_Asm:               return "assembler-with-cpp";
379  case IK_C:                 return "c";
380  case IK_CXX:               return "c++";
381  case IK_LLVM_IR:           return "ir";
382  case IK_ObjC:              return "objective-c";
383  case IK_ObjCXX:            return "objective-c++";
384  case IK_OpenCL:            return "cl";
385  case IK_CUDA:              return "cuda";
386  case IK_PreprocessedC:     return "cpp-output";
387  case IK_PreprocessedCXX:   return "c++-cpp-output";
388  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
389  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
390  }
391
392  llvm_unreachable("Unexpected language kind!");
393  return 0;
394}
395
396static const char *getActionName(frontend::ActionKind Kind) {
397  switch (Kind) {
398  case frontend::PluginAction:
399    llvm_unreachable("Invalid kind!");
400
401  case frontend::ASTDump:                return "-ast-dump";
402  case frontend::ASTDumpXML:             return "-ast-dump-xml";
403  case frontend::ASTPrint:               return "-ast-print";
404  case frontend::ASTView:                return "-ast-view";
405  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
406  case frontend::DumpTokens:             return "-dump-tokens";
407  case frontend::EmitAssembly:           return "-S";
408  case frontend::EmitBC:                 return "-emit-llvm-bc";
409  case frontend::EmitHTML:               return "-emit-html";
410  case frontend::EmitLLVM:               return "-emit-llvm";
411  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
412  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
413  case frontend::EmitObj:                return "-emit-obj";
414  case frontend::FixIt:                  return "-fixit";
415  case frontend::GenerateModule:         return "-emit-module";
416  case frontend::GeneratePCH:            return "-emit-pch";
417  case frontend::GeneratePTH:            return "-emit-pth";
418  case frontend::InitOnly:               return "-init-only";
419  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
420  case frontend::PrintDeclContext:       return "-print-decl-contexts";
421  case frontend::PrintPreamble:          return "-print-preamble";
422  case frontend::PrintPreprocessedInput: return "-E";
423  case frontend::RewriteMacros:          return "-rewrite-macros";
424  case frontend::RewriteObjC:            return "-rewrite-objc";
425  case frontend::RewriteTest:            return "-rewrite-test";
426  case frontend::RunAnalysis:            return "-analyze";
427  case frontend::RunPreprocessorOnly:    return "-Eonly";
428  }
429
430  llvm_unreachable("Unexpected language kind!");
431  return 0;
432}
433
434static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
435                                 std::vector<std::string> &Res) {
436  if (!Opts.WorkingDir.empty()) {
437    Res.push_back("-working-directory");
438    Res.push_back(Opts.WorkingDir);
439  }
440}
441
442static void FrontendOptsToArgs(const FrontendOptions &Opts,
443                               std::vector<std::string> &Res) {
444  if (Opts.DisableFree)
445    Res.push_back("-disable-free");
446  if (Opts.RelocatablePCH)
447    Res.push_back("-relocatable-pch");
448  if (Opts.ShowHelp)
449    Res.push_back("-help");
450  if (Opts.ShowMacrosInCodeCompletion)
451    Res.push_back("-code-completion-macros");
452  if (Opts.ShowCodePatternsInCodeCompletion)
453    Res.push_back("-code-completion-patterns");
454  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
455    Res.push_back("-no-code-completion-globals");
456  if (Opts.ShowStats)
457    Res.push_back("-print-stats");
458  if (Opts.ShowTimers)
459    Res.push_back("-ftime-report");
460  if (Opts.ShowVersion)
461    Res.push_back("-version");
462  if (Opts.FixWhatYouCan)
463    Res.push_back("-fix-what-you-can");
464  switch (Opts.ARCMTAction) {
465  case FrontendOptions::ARCMT_None:
466    break;
467  case FrontendOptions::ARCMT_Check:
468    Res.push_back("-arcmt-check");
469    break;
470  case FrontendOptions::ARCMT_Modify:
471    Res.push_back("-arcmt-modify");
472    break;
473  case FrontendOptions::ARCMT_Migrate:
474    Res.push_back("-arcmt-migrate");
475    break;
476  }
477  if (!Opts.ARCMTMigrateDir.empty()) {
478    Res.push_back("-arcmt-migrate-directory");
479    Res.push_back(Opts.ARCMTMigrateDir);
480  }
481  if (!Opts.ARCMTMigrateReportOut.empty()) {
482    Res.push_back("-arcmt-migrate-report-output");
483    Res.push_back(Opts.ARCMTMigrateReportOut);
484  }
485  if (Opts.ARCMTMigrateEmitARCErrors)
486    Res.push_back("-arcmt-migrate-emit-errors");
487
488  bool NeedLang = false;
489  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
490    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
491        Opts.Inputs[i].first)
492      NeedLang = true;
493  if (NeedLang) {
494    Res.push_back("-x");
495    Res.push_back(getInputKindName(Opts.Inputs[0].first));
496  }
497  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
498    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
499           "Unable to represent this input vector!");
500    Res.push_back(Opts.Inputs[i].second);
501  }
502
503  if (!Opts.OutputFile.empty()) {
504    Res.push_back("-o");
505    Res.push_back(Opts.OutputFile);
506  }
507  if (!Opts.CodeCompletionAt.FileName.empty()) {
508    Res.push_back("-code-completion-at");
509    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
510                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
511                  llvm::utostr(Opts.CodeCompletionAt.Column));
512  }
513  if (Opts.ProgramAction != frontend::PluginAction)
514    Res.push_back(getActionName(Opts.ProgramAction));
515  if (!Opts.ActionName.empty()) {
516    Res.push_back("-plugin");
517    Res.push_back(Opts.ActionName);
518    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
519      Res.push_back("-plugin-arg-" + Opts.ActionName);
520      Res.push_back(Opts.PluginArgs[i]);
521    }
522  }
523  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
524    Res.push_back("-load");
525    Res.push_back(Opts.Plugins[i]);
526  }
527  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
528    Res.push_back("-add-plugin");
529    Res.push_back(Opts.AddPluginActions[i]);
530    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
531      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
532      Res.push_back(Opts.AddPluginArgs[i][ai]);
533    }
534  }
535  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
536    Res.push_back("-ast-merge");
537    Res.push_back(Opts.ASTMergeFiles[i]);
538  }
539  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
540    Res.push_back("-mllvm");
541    Res.push_back(Opts.LLVMArgs[i]);
542  }
543}
544
545static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
546                                   std::vector<std::string> &Res) {
547  if (Opts.Sysroot != "/") {
548    Res.push_back("-isysroot");
549    Res.push_back(Opts.Sysroot);
550  }
551
552  /// User specified include entries.
553  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
554    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
555    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
556      llvm::report_fatal_error("Invalid option set!");
557    if (E.IsUserSupplied) {
558      switch (E.Group) {
559      case frontend::After:
560        Res.push_back("-idirafter");
561        break;
562
563      case frontend::Quoted:
564        Res.push_back("-iquote");
565        break;
566
567      case frontend::System:
568        Res.push_back("-isystem");
569        break;
570
571      case frontend::IndexHeaderMap:
572        Res.push_back("-index-header-map");
573        Res.push_back(E.IsFramework? "-F" : "-I");
574        break;
575
576      case frontend::CSystem:
577        Res.push_back("-c-isystem");
578        break;
579
580      case frontend::CXXSystem:
581        Res.push_back("-cxx-isystem");
582        break;
583
584      case frontend::ObjCSystem:
585        Res.push_back("-objc-isystem");
586        break;
587
588      case frontend::ObjCXXSystem:
589        Res.push_back("-objcxx-isystem");
590        break;
591
592      case frontend::Angled:
593        Res.push_back(E.IsFramework ? "-F" : "-I");
594        break;
595      }
596    } else {
597      if (E.IsInternal) {
598        assert(E.Group == frontend::System && "Unexpected header search group");
599        if (E.ImplicitExternC)
600          Res.push_back("-internal-externc-isystem");
601        else
602          Res.push_back("-internal-isystem");
603      } else {
604        if (E.Group != frontend::Angled && E.Group != frontend::System)
605          llvm::report_fatal_error("Invalid option set!");
606        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
607                      "-iwithprefix");
608      }
609    }
610    Res.push_back(E.Path);
611  }
612
613  if (!Opts.ResourceDir.empty()) {
614    Res.push_back("-resource-dir");
615    Res.push_back(Opts.ResourceDir);
616  }
617  if (!Opts.ModuleCachePath.empty()) {
618    Res.push_back("-fmodule-cache-path");
619    Res.push_back(Opts.ModuleCachePath);
620  }
621  if (!Opts.UseStandardSystemIncludes)
622    Res.push_back("-nostdsysteminc");
623  if (!Opts.UseStandardCXXIncludes)
624    Res.push_back("-nostdinc++");
625  if (Opts.UseLibcxx)
626    Res.push_back("-stdlib=libc++");
627  if (Opts.Verbose)
628    Res.push_back("-v");
629}
630
631static void LangOptsToArgs(const LangOptions &Opts,
632                           std::vector<std::string> &Res) {
633  LangOptions DefaultLangOpts;
634
635  // FIXME: Need to set -std to get all the implicit options.
636
637  // FIXME: We want to only pass options relative to the defaults, which
638  // requires constructing a target. :(
639  //
640  // It would be better to push the all target specific choices into the driver,
641  // so that everything below that was more uniform.
642
643  if (Opts.Trigraphs)
644    Res.push_back("-trigraphs");
645  // Implicit based on the input kind:
646  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
647  // Implicit based on the input language standard:
648  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
649  if (Opts.DollarIdents)
650    Res.push_back("-fdollars-in-identifiers");
651  if (Opts.GNUMode && !Opts.GNUKeywords)
652    Res.push_back("-fno-gnu-keywords");
653  if (!Opts.GNUMode && Opts.GNUKeywords)
654    Res.push_back("-fgnu-keywords");
655  if (Opts.MicrosoftExt)
656    Res.push_back("-fms-extensions");
657  if (Opts.MicrosoftMode)
658    Res.push_back("-fms-compatibility");
659  if (Opts.MSCVersion != 0)
660    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
661  if (Opts.Borland)
662    Res.push_back("-fborland-extensions");
663  if (!Opts.ObjCNonFragileABI)
664    Res.push_back("-fobjc-fragile-abi");
665  if (Opts.ObjCDefaultSynthProperties)
666    Res.push_back("-fobjc-default-synthesize-properties");
667  // NoInline is implicit.
668  if (!Opts.CXXOperatorNames)
669    Res.push_back("-fno-operator-names");
670  if (Opts.PascalStrings)
671    Res.push_back("-fpascal-strings");
672  if (Opts.CatchUndefined)
673    Res.push_back("-fcatch-undefined-behavior");
674  if (Opts.AddressSanitizer)
675    Res.push_back("-faddress-sanitizer");
676  if (Opts.WritableStrings)
677    Res.push_back("-fwritable-strings");
678  if (Opts.ConstStrings)
679    Res.push_back("-fconst-strings");
680  if (!Opts.LaxVectorConversions)
681    Res.push_back("-fno-lax-vector-conversions");
682  if (Opts.AltiVec)
683    Res.push_back("-faltivec");
684  if (Opts.Exceptions)
685    Res.push_back("-fexceptions");
686  if (Opts.ObjCExceptions)
687    Res.push_back("-fobjc-exceptions");
688  if (Opts.CXXExceptions)
689    Res.push_back("-fcxx-exceptions");
690  if (Opts.SjLjExceptions)
691    Res.push_back("-fsjlj-exceptions");
692  if (Opts.TraditionalCPP)
693    Res.push_back("-traditional-cpp");
694  if (!Opts.RTTI)
695    Res.push_back("-fno-rtti");
696  if (Opts.MSBitfields)
697    Res.push_back("-mms-bitfields");
698  if (!Opts.NeXTRuntime)
699    Res.push_back("-fgnu-runtime");
700  if (Opts.Freestanding)
701    Res.push_back("-ffreestanding");
702  if (Opts.NoBuiltin)
703    Res.push_back("-fno-builtin");
704  if (!Opts.AssumeSaneOperatorNew)
705    Res.push_back("-fno-assume-sane-operator-new");
706  if (!Opts.ThreadsafeStatics)
707    Res.push_back("-fno-threadsafe-statics");
708  if (Opts.POSIXThreads)
709    Res.push_back("-pthread");
710  if (Opts.Blocks)
711    Res.push_back("-fblocks");
712  if (Opts.BlocksRuntimeOptional)
713    Res.push_back("-fblocks-runtime-optional");
714  if (Opts.EmitAllDecls)
715    Res.push_back("-femit-all-decls");
716  if (Opts.MathErrno)
717    Res.push_back("-fmath-errno");
718  switch (Opts.getSignedOverflowBehavior()) {
719  case LangOptions::SOB_Undefined: break;
720  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
721  case LangOptions::SOB_Trapping:
722    Res.push_back("-ftrapv");
723    if (!Opts.OverflowHandler.empty()) {
724      Res.push_back("-ftrapv-handler");
725      Res.push_back(Opts.OverflowHandler);
726    }
727    break;
728  }
729  if (Opts.HeinousExtensions)
730    Res.push_back("-fheinous-gnu-extensions");
731  // Optimize is implicit.
732  // OptimizeSize is implicit.
733  if (Opts.Static)
734    Res.push_back("-static-define");
735  if (Opts.DumpRecordLayouts)
736    Res.push_back("-fdump-record-layouts");
737  if (Opts.DumpVTableLayouts)
738    Res.push_back("-fdump-vtable-layouts");
739  if (Opts.NoBitFieldTypeAlign)
740    Res.push_back("-fno-bitfield-type-alignment");
741  if (Opts.PICLevel) {
742    Res.push_back("-pic-level");
743    Res.push_back(llvm::utostr(Opts.PICLevel));
744  }
745  if (Opts.ObjCGCBitmapPrint)
746    Res.push_back("-print-ivar-layout");
747  if (Opts.NoConstantCFStrings)
748    Res.push_back("-fno-constant-cfstrings");
749  if (!Opts.AccessControl)
750    Res.push_back("-fno-access-control");
751  if (!Opts.CharIsSigned)
752    Res.push_back("-fno-signed-char");
753  if (Opts.ShortWChar)
754    Res.push_back("-fshort-wchar");
755  if (!Opts.ElideConstructors)
756    Res.push_back("-fno-elide-constructors");
757  if (Opts.getGC() != LangOptions::NonGC) {
758    if (Opts.getGC() == LangOptions::HybridGC) {
759      Res.push_back("-fobjc-gc");
760    } else {
761      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
762      Res.push_back("-fobjc-gc-only");
763    }
764  }
765  if (Opts.ObjCAutoRefCount)
766    Res.push_back("-fobjc-arc");
767  if (Opts.ObjCRuntimeHasWeak)
768    Res.push_back("-fobjc-runtime-has-weak");
769  if (!Opts.ObjCInferRelatedResultType)
770    Res.push_back("-fno-objc-infer-related-result-type");
771
772  if (Opts.AppleKext)
773    Res.push_back("-fapple-kext");
774
775  if (Opts.getVisibilityMode() != DefaultVisibility) {
776    Res.push_back("-fvisibility");
777    if (Opts.getVisibilityMode() == HiddenVisibility) {
778      Res.push_back("hidden");
779    } else {
780      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
781             "Invalid visibility!");
782      Res.push_back("protected");
783    }
784  }
785  if (Opts.InlineVisibilityHidden)
786    Res.push_back("-fvisibility-inlines-hidden");
787
788  if (Opts.getStackProtector() != 0) {
789    Res.push_back("-stack-protector");
790    Res.push_back(llvm::utostr(Opts.getStackProtector()));
791  }
792  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
793    Res.push_back("-ftemplate-depth");
794    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
795  }
796  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth) {
797    Res.push_back("-fconstexpr-depth");
798    Res.push_back(llvm::utostr(Opts.ConstexprCallDepth));
799  }
800  if (!Opts.ObjCConstantStringClass.empty()) {
801    Res.push_back("-fconstant-string-class");
802    Res.push_back(Opts.ObjCConstantStringClass);
803  }
804  if (Opts.FakeAddressSpaceMap)
805    Res.push_back("-ffake-address-space-map");
806  if (Opts.ParseUnknownAnytype)
807    Res.push_back("-funknown-anytype");
808  if (Opts.DebuggerSupport)
809    Res.push_back("-fdebugger-support");
810  if (Opts.DelayedTemplateParsing)
811    Res.push_back("-fdelayed-template-parsing");
812  if (Opts.Deprecated)
813    Res.push_back("-fdeprecated-macro");
814  if (Opts.ApplePragmaPack)
815    Res.push_back("-fapple-pragma-pack");
816  if (!Opts.CurrentModule.empty())
817    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
818}
819
820static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
821                                   std::vector<std::string> &Res) {
822  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
823    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
824                  Opts.Macros[i].first);
825  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
826    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
827    Res.push_back("-include");
828    Res.push_back(Opts.Includes[i]);
829  }
830  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
831    Res.push_back("-imacros");
832    Res.push_back(Opts.MacroIncludes[i]);
833  }
834  if (!Opts.UsePredefines)
835    Res.push_back("-undef");
836  if (Opts.DetailedRecord)
837    Res.push_back("-detailed-preprocessing-record");
838  if (!Opts.ImplicitPCHInclude.empty()) {
839    Res.push_back("-include-pch");
840    Res.push_back(Opts.ImplicitPCHInclude);
841  }
842  if (!Opts.ImplicitPTHInclude.empty()) {
843    Res.push_back("-include-pth");
844    Res.push_back(Opts.ImplicitPTHInclude);
845  }
846  if (!Opts.TokenCache.empty()) {
847    if (Opts.ImplicitPTHInclude.empty()) {
848      Res.push_back("-token-cache");
849      Res.push_back(Opts.TokenCache);
850    } else
851      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
852             "Unsupported option combination!");
853  }
854  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i) {
855    Res.push_back("-chain-include");
856    Res.push_back(Opts.ChainedIncludes[i]);
857  }
858  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
859    Res.push_back("-remap-file");
860    Res.push_back(Opts.RemappedFiles[i].first + ";" +
861                  Opts.RemappedFiles[i].second);
862  }
863}
864
865static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
866                                         std::vector<std::string> &Res) {
867  if (!Opts.ShowCPP && !Opts.ShowMacros)
868    llvm::report_fatal_error("Invalid option combination!");
869
870  if (Opts.ShowCPP && Opts.ShowMacros)
871    Res.push_back("-dD");
872  else if (!Opts.ShowCPP && Opts.ShowMacros)
873    Res.push_back("-dM");
874
875  if (!Opts.ShowLineMarkers)
876    Res.push_back("-P");
877  if (Opts.ShowComments)
878    Res.push_back("-C");
879  if (Opts.ShowMacroComments)
880    Res.push_back("-CC");
881}
882
883static void TargetOptsToArgs(const TargetOptions &Opts,
884                             std::vector<std::string> &Res) {
885  Res.push_back("-triple");
886  Res.push_back(Opts.Triple);
887  if (!Opts.CPU.empty()) {
888    Res.push_back("-target-cpu");
889    Res.push_back(Opts.CPU);
890  }
891  if (!Opts.ABI.empty()) {
892    Res.push_back("-target-abi");
893    Res.push_back(Opts.ABI);
894  }
895  if (!Opts.LinkerVersion.empty()) {
896    Res.push_back("-target-linker-version");
897    Res.push_back(Opts.LinkerVersion);
898  }
899  if (!Opts.CXXABI.empty()) {
900    Res.push_back("-cxx-abi");
901    Res.push_back(Opts.CXXABI);
902  }
903  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
904    Res.push_back("-target-feature");
905    Res.push_back(Opts.Features[i]);
906  }
907}
908
909void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
910  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
911  CodeGenOptsToArgs(getCodeGenOpts(), Res);
912  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
913  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
914  FileSystemOptsToArgs(getFileSystemOpts(), Res);
915  FrontendOptsToArgs(getFrontendOpts(), Res);
916  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
917  LangOptsToArgs(*getLangOpts(), Res);
918  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
919  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
920  TargetOptsToArgs(getTargetOpts(), Res);
921}
922
923//===----------------------------------------------------------------------===//
924// Deserialization (to args)
925//===----------------------------------------------------------------------===//
926
927using namespace clang::driver;
928using namespace clang::driver::cc1options;
929
930//
931
932static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
933                                     DiagnosticsEngine &Diags) {
934  unsigned DefaultOpt = 0;
935  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
936    DefaultOpt = 2;
937  // -Os/-Oz implies -O2
938  return (Args.hasArg(OPT_Os) || Args.hasArg (OPT_Oz)) ? 2 :
939    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
940}
941
942static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
943                              DiagnosticsEngine &Diags) {
944  using namespace cc1options;
945
946  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
947    StringRef Name = A->getValue(Args);
948    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
949#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
950      .Case(CMDFLAG, NAME##Model)
951#include "clang/Frontend/Analyses.def"
952      .Default(NumStores);
953    // FIXME: Error handling.
954    if (Value == NumStores)
955      Diags.Report(diag::err_drv_invalid_value)
956        << A->getAsString(Args) << Name;
957    else
958      Opts.AnalysisStoreOpt = Value;
959  }
960
961  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
962    StringRef Name = A->getValue(Args);
963    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
964#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
965      .Case(CMDFLAG, NAME##Model)
966#include "clang/Frontend/Analyses.def"
967      .Default(NumConstraints);
968    // FIXME: Error handling.
969    if (Value == NumConstraints)
970      Diags.Report(diag::err_drv_invalid_value)
971        << A->getAsString(Args) << Name;
972    else
973      Opts.AnalysisConstraintsOpt = Value;
974  }
975
976  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
977    StringRef Name = A->getValue(Args);
978    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
979#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
980      .Case(CMDFLAG, PD_##NAME)
981#include "clang/Frontend/Analyses.def"
982      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
983    // FIXME: Error handling.
984    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
985      Diags.Report(diag::err_drv_invalid_value)
986        << A->getAsString(Args) << Name;
987    else
988      Opts.AnalysisDiagOpt = Value;
989  }
990
991  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
992    StringRef Name = A->getValue(Args);
993    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
994#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
995      .Case(CMDFLAG, NAME)
996#include "clang/Frontend/Analyses.def"
997      .Default(NumPurgeModes);
998    // FIXME: Error handling.
999    if (Value == NumPurgeModes)
1000      Diags.Report(diag::err_drv_invalid_value)
1001        << A->getAsString(Args) << Name;
1002    else
1003      Opts.AnalysisPurgeOpt = Value;
1004  }
1005
1006  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1007  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1008  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1009  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1010  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1011  Opts.AnalyzeNestedBlocks =
1012    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1013  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1014  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1015  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1016  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1017  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1018  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1019  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1020  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1021  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1022  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
1023
1024  Opts.CheckersControlList.clear();
1025  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1026                                             OPT_analyzer_disable_checker),
1027         ie = Args.filtered_end(); it != ie; ++it) {
1028    const Arg *A = *it;
1029    A->claim();
1030    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1031    // We can have a list of comma separated checker names, e.g:
1032    // '-analyzer-checker=cocoa,unix'
1033    StringRef checkerList = A->getValue(Args);
1034    SmallVector<StringRef, 4> checkers;
1035    checkerList.split(checkers, ",");
1036    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1037      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1038  }
1039}
1040
1041static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1042                             DiagnosticsEngine &Diags) {
1043  using namespace cc1options;
1044
1045  Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
1046  if (Opts.OptimizationLevel > 3) {
1047    Diags.Report(diag::err_drv_invalid_value)
1048      << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
1049    Opts.OptimizationLevel = 3;
1050  }
1051
1052  // We must always run at least the always inlining pass.
1053  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1054    : CodeGenOptions::OnlyAlwaysInlining;
1055
1056  Opts.DebugInfo = Args.hasArg(OPT_g);
1057  Opts.LimitDebugInfo = !Args.hasArg(OPT_fno_limit_debug_info)
1058    || Args.hasArg(OPT_flimit_debug_info);
1059  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1060  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1061  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1062  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1063    OPT_fuse_register_sized_bitfield_access);
1064  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1065  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1066  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1067  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1068  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1069  Opts.OptimizeSize = Args.hasArg(OPT_Os);
1070  Opts.OptimizeSize = Args.hasArg(OPT_Oz) ? 2 : Opts.OptimizeSize;
1071  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1072                            Args.hasArg(OPT_ffreestanding));
1073  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1074                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1075
1076  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1077  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1078  Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc);
1079  Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate);
1080  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1081  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1082  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1083  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1084  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1085  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1086  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1087  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1088  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1089  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1090  Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
1091                       Args.hasArg(OPT_cl_finite_math_only)||
1092                       Args.hasArg(OPT_cl_fast_relaxed_math));
1093  Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
1094                       Args.hasArg(OPT_cl_finite_math_only)||
1095                       Args.hasArg(OPT_cl_fast_relaxed_math));
1096  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1097  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1098  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1099  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1100  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1101  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1102  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1103  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1104  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1105  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1106  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1107  Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1108                      Args.hasArg(OPT_cl_fast_relaxed_math);
1109  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1110  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1111
1112  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1113  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1114
1115  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1116  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1117
1118  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1119  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1120  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1121  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1122  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1123  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1124  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1125  Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1126  if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1127    StringRef Val = A->getValue(Args);
1128    Val.getAsInteger(10, Opts.StackAlignment);
1129  }
1130
1131  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1132    StringRef Name = A->getValue(Args);
1133    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1134      .Case("legacy", CodeGenOptions::Legacy)
1135      .Case("non-legacy", CodeGenOptions::NonLegacy)
1136      .Case("mixed", CodeGenOptions::Mixed)
1137      .Default(~0U);
1138    if (Method == ~0U)
1139      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1140    else
1141      Opts.ObjCDispatchMethod = Method;
1142  }
1143}
1144
1145static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1146                                      ArgList &Args) {
1147  using namespace cc1options;
1148  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1149  Opts.Targets = Args.getAllArgValues(OPT_MT);
1150  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1151  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1152  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1153  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1154  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1155}
1156
1157static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1158                                DiagnosticsEngine &Diags) {
1159  using namespace cc1options;
1160  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1161  Opts.DiagnosticSerializationFile =
1162    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1163  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1164  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1165  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1166  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1167  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1168  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1169  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1170                                 OPT_fno_show_column,
1171                                 /*Default=*/true);
1172  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1173  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1174  Opts.ShowNames = Args.hasArg(OPT_fdiagnostics_show_name);
1175  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1176
1177  // Default behavior is to not to show note include stacks.
1178  Opts.ShowNoteIncludeStack = false;
1179  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1180                               OPT_fno_diagnostics_show_note_include_stack))
1181    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1182      Opts.ShowNoteIncludeStack = true;
1183
1184  StringRef ShowOverloads =
1185    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1186  if (ShowOverloads == "best")
1187    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1188  else if (ShowOverloads == "all")
1189    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1190  else
1191    Diags.Report(diag::err_drv_invalid_value)
1192      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1193      << ShowOverloads;
1194
1195  StringRef ShowCategory =
1196    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1197  if (ShowCategory == "none")
1198    Opts.ShowCategories = 0;
1199  else if (ShowCategory == "id")
1200    Opts.ShowCategories = 1;
1201  else if (ShowCategory == "name")
1202    Opts.ShowCategories = 2;
1203  else
1204    Diags.Report(diag::err_drv_invalid_value)
1205      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1206      << ShowCategory;
1207
1208  StringRef Format =
1209    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1210  if (Format == "clang")
1211    Opts.Format = DiagnosticOptions::Clang;
1212  else if (Format == "msvc")
1213    Opts.Format = DiagnosticOptions::Msvc;
1214  else if (Format == "vi")
1215    Opts.Format = DiagnosticOptions::Vi;
1216  else
1217    Diags.Report(diag::err_drv_invalid_value)
1218      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1219      << Format;
1220
1221  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1222  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1223  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1224  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1225  Opts.MacroBacktraceLimit
1226    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1227                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1228  Opts.TemplateBacktraceLimit
1229    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1230                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1231                         Diags);
1232  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1233                                    DiagnosticOptions::DefaultTabStop, Diags);
1234  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1235    Diags.Report(diag::warn_ignoring_ftabstop_value)
1236      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1237    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1238  }
1239  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1240  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1241  Opts.Warnings = Args.getAllArgValues(OPT_W);
1242}
1243
1244static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1245  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1246}
1247
1248static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1249                                   DiagnosticsEngine &Diags) {
1250  using namespace cc1options;
1251  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1252  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1253    switch (A->getOption().getID()) {
1254    default:
1255      llvm_unreachable("Invalid option in group!");
1256    case OPT_ast_dump:
1257      Opts.ProgramAction = frontend::ASTDump; break;
1258    case OPT_ast_dump_xml:
1259      Opts.ProgramAction = frontend::ASTDumpXML; break;
1260    case OPT_ast_print:
1261      Opts.ProgramAction = frontend::ASTPrint; break;
1262    case OPT_ast_view:
1263      Opts.ProgramAction = frontend::ASTView; break;
1264    case OPT_dump_raw_tokens:
1265      Opts.ProgramAction = frontend::DumpRawTokens; break;
1266    case OPT_dump_tokens:
1267      Opts.ProgramAction = frontend::DumpTokens; break;
1268    case OPT_S:
1269      Opts.ProgramAction = frontend::EmitAssembly; break;
1270    case OPT_emit_llvm_bc:
1271      Opts.ProgramAction = frontend::EmitBC; break;
1272    case OPT_emit_html:
1273      Opts.ProgramAction = frontend::EmitHTML; break;
1274    case OPT_emit_llvm:
1275      Opts.ProgramAction = frontend::EmitLLVM; break;
1276    case OPT_emit_llvm_only:
1277      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1278    case OPT_emit_codegen_only:
1279      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1280    case OPT_emit_obj:
1281      Opts.ProgramAction = frontend::EmitObj; break;
1282    case OPT_fixit_EQ:
1283      Opts.FixItSuffix = A->getValue(Args);
1284      // fall-through!
1285    case OPT_fixit:
1286      Opts.ProgramAction = frontend::FixIt; break;
1287    case OPT_emit_module:
1288      Opts.ProgramAction = frontend::GenerateModule; break;
1289    case OPT_emit_pch:
1290      Opts.ProgramAction = frontend::GeneratePCH; break;
1291    case OPT_emit_pth:
1292      Opts.ProgramAction = frontend::GeneratePTH; break;
1293    case OPT_init_only:
1294      Opts.ProgramAction = frontend::InitOnly; break;
1295    case OPT_fsyntax_only:
1296      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1297    case OPT_print_decl_contexts:
1298      Opts.ProgramAction = frontend::PrintDeclContext; break;
1299    case OPT_print_preamble:
1300      Opts.ProgramAction = frontend::PrintPreamble; break;
1301    case OPT_E:
1302      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1303    case OPT_rewrite_macros:
1304      Opts.ProgramAction = frontend::RewriteMacros; break;
1305    case OPT_rewrite_objc:
1306      Opts.ProgramAction = frontend::RewriteObjC; break;
1307    case OPT_rewrite_test:
1308      Opts.ProgramAction = frontend::RewriteTest; break;
1309    case OPT_analyze:
1310      Opts.ProgramAction = frontend::RunAnalysis; break;
1311    case OPT_Eonly:
1312      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1313    }
1314  }
1315
1316  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1317    Opts.Plugins.push_back(A->getValue(Args,0));
1318    Opts.ProgramAction = frontend::PluginAction;
1319    Opts.ActionName = A->getValue(Args);
1320
1321    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1322           end = Args.filtered_end(); it != end; ++it) {
1323      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1324        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1325    }
1326  }
1327
1328  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1329  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1330  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1331    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1332           end = Args.filtered_end(); it != end; ++it) {
1333      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1334        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1335    }
1336  }
1337
1338  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1339    Opts.CodeCompletionAt =
1340      ParsedSourceLocation::FromString(A->getValue(Args));
1341    if (Opts.CodeCompletionAt.FileName.empty())
1342      Diags.Report(diag::err_drv_invalid_value)
1343        << A->getAsString(Args) << A->getValue(Args);
1344  }
1345  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1346
1347  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1348  Opts.Plugins = Args.getAllArgValues(OPT_load);
1349  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1350  Opts.ShowHelp = Args.hasArg(OPT_help);
1351  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1352  Opts.ShowCodePatternsInCodeCompletion
1353    = Args.hasArg(OPT_code_completion_patterns);
1354  Opts.ShowGlobalSymbolsInCodeCompletion
1355    = !Args.hasArg(OPT_no_code_completion_globals);
1356  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1357  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1358  Opts.ShowVersion = Args.hasArg(OPT_version);
1359  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1360  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1361  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1362
1363  Opts.ARCMTAction = FrontendOptions::ARCMT_None;
1364  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1365                                     OPT_arcmt_modify,
1366                                     OPT_arcmt_migrate)) {
1367    switch (A->getOption().getID()) {
1368    default:
1369      llvm_unreachable("missed a case");
1370    case OPT_arcmt_check:
1371      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1372      break;
1373    case OPT_arcmt_modify:
1374      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1375      break;
1376    case OPT_arcmt_migrate:
1377      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1378      break;
1379    }
1380  }
1381  Opts.ARCMTMigrateDir = Args.getLastArgValue(OPT_arcmt_migrate_directory);
1382  Opts.ARCMTMigrateReportOut
1383    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1384  Opts.ARCMTMigrateEmitARCErrors
1385    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1386
1387  InputKind DashX = IK_None;
1388  if (const Arg *A = Args.getLastArg(OPT_x)) {
1389    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1390      .Case("c", IK_C)
1391      .Case("cl", IK_OpenCL)
1392      .Case("cuda", IK_CUDA)
1393      .Case("c++", IK_CXX)
1394      .Case("objective-c", IK_ObjC)
1395      .Case("objective-c++", IK_ObjCXX)
1396      .Case("cpp-output", IK_PreprocessedC)
1397      .Case("assembler-with-cpp", IK_Asm)
1398      .Case("c++-cpp-output", IK_PreprocessedCXX)
1399      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1400      .Case("objc-cpp-output", IK_PreprocessedObjC)
1401      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1402      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1403      .Case("c-header", IK_C)
1404      .Case("cl-header", IK_OpenCL)
1405      .Case("objective-c-header", IK_ObjC)
1406      .Case("c++-header", IK_CXX)
1407      .Case("objective-c++-header", IK_ObjCXX)
1408      .Case("ast", IK_AST)
1409      .Case("ir", IK_LLVM_IR)
1410      .Default(IK_None);
1411    if (DashX == IK_None)
1412      Diags.Report(diag::err_drv_invalid_value)
1413        << A->getAsString(Args) << A->getValue(Args);
1414  }
1415
1416  // '-' is the default input if none is given.
1417  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1418  Opts.Inputs.clear();
1419  if (Inputs.empty())
1420    Inputs.push_back("-");
1421  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1422    InputKind IK = DashX;
1423    if (IK == IK_None) {
1424      IK = FrontendOptions::getInputKindForExtension(
1425        StringRef(Inputs[i]).rsplit('.').second);
1426      // FIXME: Remove this hack.
1427      if (i == 0)
1428        DashX = IK;
1429    }
1430    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1431  }
1432
1433  return DashX;
1434}
1435
1436std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1437                                                 void *MainAddr) {
1438  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1439
1440  if (!P.isEmpty()) {
1441    P.eraseComponent();  // Remove /clang from foo/bin/clang
1442    P.eraseComponent();  // Remove /bin   from foo/bin
1443
1444    // Get foo/lib/clang/<version>/include
1445    P.appendComponent("lib");
1446    P.appendComponent("clang");
1447    P.appendComponent(CLANG_VERSION_STRING);
1448  }
1449
1450  return P.str();
1451}
1452
1453static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1454  using namespace cc1options;
1455  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1456  Opts.Verbose = Args.hasArg(OPT_v);
1457  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1458  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1459  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1460  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1461    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1462  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1463  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1464  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1465
1466  // Add -I..., -F..., and -index-header-map options in order.
1467  bool IsIndexHeaderMap = false;
1468  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1469                                             OPT_index_header_map),
1470       ie = Args.filtered_end(); it != ie; ++it) {
1471    if ((*it)->getOption().matches(OPT_index_header_map)) {
1472      // -index-header-map applies to the next -I or -F.
1473      IsIndexHeaderMap = true;
1474      continue;
1475    }
1476
1477    frontend::IncludeDirGroup Group
1478      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1479
1480    Opts.AddPath((*it)->getValue(Args), Group, true,
1481                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1482    IsIndexHeaderMap = false;
1483  }
1484
1485  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1486  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1487  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1488                                             OPT_iwithprefixbefore),
1489         ie = Args.filtered_end(); it != ie; ++it) {
1490    const Arg *A = *it;
1491    if (A->getOption().matches(OPT_iprefix))
1492      Prefix = A->getValue(Args);
1493    else if (A->getOption().matches(OPT_iwithprefix))
1494      Opts.AddPath(Prefix.str() + A->getValue(Args),
1495                   frontend::System, false, false, false);
1496    else
1497      Opts.AddPath(Prefix.str() + A->getValue(Args),
1498                   frontend::Angled, false, false, false);
1499  }
1500
1501  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1502         ie = Args.filtered_end(); it != ie; ++it)
1503    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1504  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1505         ie = Args.filtered_end(); it != ie; ++it)
1506    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1507  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1508         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1509    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1510                 !(*it)->getOption().matches(OPT_iwithsysroot));
1511  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1512         ie = Args.filtered_end(); it != ie; ++it)
1513    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1514                 true);
1515
1516  // Add the paths for the various language specific isystem flags.
1517  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1518       ie = Args.filtered_end(); it != ie; ++it)
1519    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1520  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1521       ie = Args.filtered_end(); it != ie; ++it)
1522    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1523  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1524       ie = Args.filtered_end(); it != ie; ++it)
1525    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1526  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1527       ie = Args.filtered_end(); it != ie; ++it)
1528    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1529                 true);
1530
1531  // Add the internal paths from a driver that detects standard include paths.
1532  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1533                                            OPT_internal_externc_isystem),
1534                    E = Args.filtered_end();
1535       I != E; ++I)
1536    Opts.AddPath((*I)->getValue(Args), frontend::System,
1537                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1538                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1539}
1540
1541void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1542                                         LangStandard::Kind LangStd) {
1543  // Set some properties which depend solely on the input kind; it would be nice
1544  // to move these to the language standard, and have the driver resolve the
1545  // input kind + language standard.
1546  if (IK == IK_Asm) {
1547    Opts.AsmPreprocessor = 1;
1548  } else if (IK == IK_ObjC ||
1549             IK == IK_ObjCXX ||
1550             IK == IK_PreprocessedObjC ||
1551             IK == IK_PreprocessedObjCXX) {
1552    Opts.ObjC1 = Opts.ObjC2 = 1;
1553  }
1554
1555  if (LangStd == LangStandard::lang_unspecified) {
1556    // Based on the base language, pick one.
1557    switch (IK) {
1558    case IK_None:
1559    case IK_AST:
1560    case IK_LLVM_IR:
1561      llvm_unreachable("Invalid input kind!");
1562    case IK_OpenCL:
1563      LangStd = LangStandard::lang_opencl;
1564      break;
1565    case IK_CUDA:
1566      LangStd = LangStandard::lang_cuda;
1567      break;
1568    case IK_Asm:
1569    case IK_C:
1570    case IK_PreprocessedC:
1571    case IK_ObjC:
1572    case IK_PreprocessedObjC:
1573      LangStd = LangStandard::lang_gnu99;
1574      break;
1575    case IK_CXX:
1576    case IK_PreprocessedCXX:
1577    case IK_ObjCXX:
1578    case IK_PreprocessedObjCXX:
1579      LangStd = LangStandard::lang_gnucxx98;
1580      break;
1581    }
1582  }
1583
1584  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1585  Opts.BCPLComment = Std.hasBCPLComments();
1586  Opts.C99 = Std.isC99();
1587  Opts.C1X = Std.isC1X();
1588  Opts.CPlusPlus = Std.isCPlusPlus();
1589  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1590  Opts.Digraphs = Std.hasDigraphs();
1591  Opts.GNUMode = Std.isGNUMode();
1592  Opts.GNUInline = !Std.isC99();
1593  Opts.HexFloats = Std.hasHexFloats();
1594  Opts.ImplicitInt = Std.hasImplicitInt();
1595
1596  // OpenCL has some additional defaults.
1597  if (LangStd == LangStandard::lang_opencl) {
1598    Opts.OpenCL = 1;
1599    Opts.AltiVec = 0;
1600    Opts.CXXOperatorNames = 1;
1601    Opts.LaxVectorConversions = 0;
1602    Opts.DefaultFPContract = 1;
1603  }
1604
1605  if (LangStd == LangStandard::lang_cuda)
1606    Opts.CUDA = 1;
1607
1608  // OpenCL and C++ both have bool, true, false keywords.
1609  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1610
1611  Opts.GNUKeywords = Opts.GNUMode;
1612  Opts.CXXOperatorNames = Opts.CPlusPlus;
1613
1614  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1615  // is specified, or -std is set to a conforming mode.
1616  Opts.Trigraphs = !Opts.GNUMode;
1617
1618  Opts.DollarIdents = !Opts.AsmPreprocessor;
1619}
1620
1621static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1622                          DiagnosticsEngine &Diags) {
1623  // FIXME: Cleanup per-file based stuff.
1624  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1625  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1626    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1627#define LANGSTANDARD(id, name, desc, features) \
1628      .Case(name, LangStandard::lang_##id)
1629#include "clang/Frontend/LangStandards.def"
1630      .Default(LangStandard::lang_unspecified);
1631    if (LangStd == LangStandard::lang_unspecified)
1632      Diags.Report(diag::err_drv_invalid_value)
1633        << A->getAsString(Args) << A->getValue(Args);
1634    else {
1635      // Valid standard, check to make sure language and standard are compatable.
1636      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1637      switch (IK) {
1638      case IK_C:
1639      case IK_ObjC:
1640      case IK_PreprocessedC:
1641      case IK_PreprocessedObjC:
1642        if (!(Std.isC89() || Std.isC99()))
1643          Diags.Report(diag::err_drv_argument_not_allowed_with)
1644            << A->getAsString(Args) << "C/ObjC";
1645        break;
1646      case IK_CXX:
1647      case IK_ObjCXX:
1648      case IK_PreprocessedCXX:
1649      case IK_PreprocessedObjCXX:
1650        if (!Std.isCPlusPlus())
1651          Diags.Report(diag::err_drv_argument_not_allowed_with)
1652            << A->getAsString(Args) << "C++/ObjC++";
1653        break;
1654      case IK_OpenCL:
1655        if (!Std.isC99())
1656          Diags.Report(diag::err_drv_argument_not_allowed_with)
1657            << A->getAsString(Args) << "OpenCL";
1658        break;
1659      case IK_CUDA:
1660        if (!Std.isCPlusPlus())
1661          Diags.Report(diag::err_drv_argument_not_allowed_with)
1662            << A->getAsString(Args) << "CUDA";
1663        break;
1664      default:
1665        break;
1666      }
1667    }
1668  }
1669
1670  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1671    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1672      Diags.Report(diag::err_drv_invalid_value)
1673        << A->getAsString(Args) << A->getValue(Args);
1674    }
1675  }
1676
1677  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1678
1679  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1680  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1681  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1682  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1683  // name, as it doesn't seem a useful distinction.
1684  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1685                                  Opts.GNUKeywords);
1686
1687  if (Args.hasArg(OPT_fno_operator_names))
1688    Opts.CXXOperatorNames = 0;
1689
1690  if (Opts.ObjC1) {
1691    if (Args.hasArg(OPT_fobjc_gc_only))
1692      Opts.setGC(LangOptions::GCOnly);
1693    else if (Args.hasArg(OPT_fobjc_gc))
1694      Opts.setGC(LangOptions::HybridGC);
1695    else if (Args.hasArg(OPT_fobjc_arc)) {
1696      Opts.ObjCAutoRefCount = 1;
1697      if (Args.hasArg(OPT_fobjc_fragile_abi))
1698        Diags.Report(diag::err_arc_nonfragile_abi);
1699    }
1700
1701    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1702      Opts.ObjCRuntimeHasWeak = 1;
1703
1704    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1705      Opts.ObjCInferRelatedResultType = 0;
1706  }
1707
1708  if (Args.hasArg(OPT_fgnu89_inline))
1709    Opts.GNUInline = 1;
1710
1711  if (Args.hasArg(OPT_fapple_kext)) {
1712    if (!Opts.CPlusPlus)
1713      Diags.Report(diag::warn_c_kext);
1714    else
1715      Opts.AppleKext = 1;
1716  }
1717
1718  if (Args.hasArg(OPT_print_ivar_layout))
1719    Opts.ObjCGCBitmapPrint = 1;
1720  if (Args.hasArg(OPT_fno_constant_cfstrings))
1721    Opts.NoConstantCFStrings = 1;
1722
1723  if (Args.hasArg(OPT_faltivec))
1724    Opts.AltiVec = 1;
1725
1726  if (Args.hasArg(OPT_pthread))
1727    Opts.POSIXThreads = 1;
1728
1729  if (Args.hasArg(OPT_fdelayed_template_parsing))
1730    Opts.DelayedTemplateParsing = 1;
1731
1732  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1733  if (Vis == "default")
1734    Opts.setVisibilityMode(DefaultVisibility);
1735  else if (Vis == "hidden")
1736    Opts.setVisibilityMode(HiddenVisibility);
1737  else if (Vis == "protected")
1738    Opts.setVisibilityMode(ProtectedVisibility);
1739  else
1740    Diags.Report(diag::err_drv_invalid_value)
1741      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1742
1743  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1744    Opts.InlineVisibilityHidden = 1;
1745
1746  if (Args.hasArg(OPT_ftrapv)) {
1747    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1748    // Set the handler, if one is specified.
1749    Opts.OverflowHandler =
1750        Args.getLastArgValue(OPT_ftrapv_handler);
1751  }
1752  else if (Args.hasArg(OPT_fwrapv))
1753    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1754
1755  if (Args.hasArg(OPT_trigraphs))
1756    Opts.Trigraphs = 1;
1757
1758  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1759                                   OPT_fno_dollars_in_identifiers,
1760                                   Opts.DollarIdents);
1761  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1762  Opts.MicrosoftExt
1763    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1764  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1765  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1766  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1767  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1768  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1769                                   Opts.ConstStrings);
1770  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1771    Opts.LaxVectorConversions = 0;
1772  if (Args.hasArg(OPT_fno_threadsafe_statics))
1773    Opts.ThreadsafeStatics = 0;
1774  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1775  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1776  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1777  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1778  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1779
1780  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1781  Opts.Blocks = Args.hasArg(OPT_fblocks);
1782  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1783  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1784  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1785  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1786  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1787  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1788  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1789  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1790  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1791  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1792  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1793  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1794                                                    Diags);
1795  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1796                                                    Diags);
1797  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1798  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1799                                                    0, Diags);
1800  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1801  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1802  Opts.ObjCConstantStringClass =
1803    Args.getLastArgValue(OPT_fconstant_string_class);
1804  Opts.ObjCNonFragileABI = !Args.hasArg(OPT_fobjc_fragile_abi);
1805  if (Opts.ObjCNonFragileABI)
1806    Opts.ObjCNonFragileABI2 = true;
1807  Opts.ObjCDefaultSynthProperties =
1808    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1809  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1810  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1811  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct, 0, Diags);
1812  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1813  Opts.Static = Args.hasArg(OPT_static_define);
1814  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1815  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1816  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1817  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1818  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1819  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1820  Opts.MRTD = Args.hasArg(OPT_mrtd);
1821  Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1822  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1823  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1824  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1825  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
1826  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1827  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1828
1829  // Record whether the __DEPRECATED define was requested.
1830  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1831                                 OPT_fno_deprecated_macro,
1832                                 Opts.Deprecated);
1833
1834  // FIXME: Eliminate this dependency.
1835  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1836  Opts.Optimize = Opt != 0;
1837  Opts.OptimizeSize = Args.hasArg(OPT_Os) || Args.hasArg(OPT_Oz);
1838
1839  // This is the __NO_INLINE__ define, which just depends on things like the
1840  // optimization level and -fno-inline, not actually whether the backend has
1841  // inlining enabled.
1842  //
1843  // FIXME: This is affected by other options (-fno-inline).
1844  Opts.NoInline = !Opt;
1845
1846  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1847  switch (SSP) {
1848  default:
1849    Diags.Report(diag::err_drv_invalid_value)
1850      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1851    break;
1852  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1853  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
1854  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
1855  }
1856}
1857
1858static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1859                                  FileManager &FileMgr,
1860                                  DiagnosticsEngine &Diags) {
1861  using namespace cc1options;
1862  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1863  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1864  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1865      Opts.TokenCache = A->getValue(Args);
1866  else
1867    Opts.TokenCache = Opts.ImplicitPTHInclude;
1868  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1869  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1870  Opts.AutoModuleImport = Args.hasArg(OPT_fauto_module_import);
1871  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1872
1873  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1874  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1875         ie = Args.filtered_end(); it != ie; ++it) {
1876    const Arg *A = *it;
1877    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1878  }
1879
1880  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1881    StringRef Value(A->getValue(Args));
1882    size_t Comma = Value.find(',');
1883    unsigned Bytes = 0;
1884    unsigned EndOfLine = 0;
1885
1886    if (Comma == StringRef::npos ||
1887        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1888        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1889      Diags.Report(diag::err_drv_preamble_format);
1890    else {
1891      Opts.PrecompiledPreambleBytes.first = Bytes;
1892      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1893    }
1894  }
1895
1896  // Add macros from the command line.
1897  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1898         ie = Args.filtered_end(); it != ie; ++it) {
1899    if ((*it)->getOption().matches(OPT_D))
1900      Opts.addMacroDef((*it)->getValue(Args));
1901    else
1902      Opts.addMacroUndef((*it)->getValue(Args));
1903  }
1904
1905  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1906
1907  // Add the ordered list of -includes.
1908  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1909                                             OPT_include_pth),
1910         ie = Args.filtered_end(); it != ie; ++it) {
1911    const Arg *A = *it;
1912    // PCH is handled specially, we need to extra the original include path.
1913    if (A->getOption().matches(OPT_include_pch)) {
1914      std::string OriginalFile =
1915        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1916      if (OriginalFile.empty())
1917        continue;
1918
1919      Opts.Includes.push_back(OriginalFile);
1920    } else
1921      Opts.Includes.push_back(A->getValue(Args));
1922  }
1923
1924  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1925         ie = Args.filtered_end(); it != ie; ++it) {
1926    const Arg *A = *it;
1927    Opts.ChainedIncludes.push_back(A->getValue(Args));
1928  }
1929
1930  // Include 'altivec.h' if -faltivec option present
1931  if (Args.hasArg(OPT_faltivec))
1932    Opts.Includes.push_back("altivec.h");
1933
1934  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1935         ie = Args.filtered_end(); it != ie; ++it) {
1936    const Arg *A = *it;
1937    std::pair<StringRef,StringRef> Split =
1938      StringRef(A->getValue(Args)).split(';');
1939
1940    if (Split.second.empty()) {
1941      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1942      continue;
1943    }
1944
1945    Opts.addRemappedFile(Split.first, Split.second);
1946  }
1947
1948  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1949    StringRef Name = A->getValue(Args);
1950    unsigned Library = llvm::StringSwitch<unsigned>(Name)
1951      .Case("libc++", ARCXX_libcxx)
1952      .Case("libstdc++", ARCXX_libstdcxx)
1953      .Case("none", ARCXX_nolib)
1954      .Default(~0U);
1955    if (Library == ~0U)
1956      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1957    else
1958      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1959  }
1960}
1961
1962static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1963                                        ArgList &Args) {
1964  using namespace cc1options;
1965  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1966  Opts.ShowComments = Args.hasArg(OPT_C);
1967  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1968  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1969  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1970}
1971
1972static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1973  using namespace cc1options;
1974  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1975  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1976  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1977  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1978  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1979  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1980
1981  // Use the default target triple if unspecified.
1982  if (Opts.Triple.empty())
1983    Opts.Triple = llvm::sys::getDefaultTargetTriple();
1984}
1985
1986//
1987
1988void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1989                                        const char *const *ArgBegin,
1990                                        const char *const *ArgEnd,
1991                                        DiagnosticsEngine &Diags) {
1992  // Parse the arguments.
1993  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1994  unsigned MissingArgIndex, MissingArgCount;
1995  llvm::OwningPtr<InputArgList> Args(
1996    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1997
1998  // Check for missing argument error.
1999  if (MissingArgCount)
2000    Diags.Report(diag::err_drv_missing_argument)
2001      << Args->getArgString(MissingArgIndex) << MissingArgCount;
2002
2003  // Issue errors on unknown arguments.
2004  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
2005         ie = Args->filtered_end(); it != ie; ++it)
2006    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
2007
2008  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
2009  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
2010  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
2011  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
2012  // FIXME: We shouldn't have to pass the DashX option around here
2013  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2014  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
2015  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2016  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2017    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2018    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2019      Res.getLangOpts()->ObjCExceptions = 1;
2020  }
2021  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2022  // PCH file and find the original header name. Remove the need to do that in
2023  // ParsePreprocessorArgs and remove the FileManager
2024  // parameters from the function and the "FileManager.h" #include.
2025  FileManager FileMgr(Res.getFileSystemOpts());
2026  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2027  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2028  ParseTargetArgs(Res.getTargetOpts(), *Args);
2029}
2030
2031namespace {
2032
2033  class ModuleSignature {
2034    llvm::SmallVector<uint64_t, 16> Data;
2035    unsigned CurBit;
2036    uint64_t CurValue;
2037
2038  public:
2039    ModuleSignature() : CurBit(0), CurValue(0) { }
2040
2041    void add(uint64_t Value, unsigned Bits);
2042    void add(StringRef Value);
2043    void flush();
2044
2045    llvm::APInt getAsInteger() const;
2046  };
2047}
2048
2049void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2050  CurValue |= Value << CurBit;
2051  if (CurBit + NumBits < 64) {
2052    CurBit += NumBits;
2053    return;
2054  }
2055
2056  // Add the current word.
2057  Data.push_back(CurValue);
2058
2059  if (CurBit)
2060    CurValue = Value >> (64-CurBit);
2061  else
2062    CurValue = 0;
2063  CurBit = (CurBit+NumBits) & 63;
2064}
2065
2066void ModuleSignature::flush() {
2067  if (CurBit == 0)
2068    return;
2069
2070  Data.push_back(CurValue);
2071  CurBit = 0;
2072  CurValue = 0;
2073}
2074
2075void ModuleSignature::add(StringRef Value) {
2076  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2077    add(*I, 8);
2078}
2079
2080llvm::APInt ModuleSignature::getAsInteger() const {
2081  return llvm::APInt(Data.size() * 64, Data);
2082}
2083
2084std::string CompilerInvocation::getModuleHash() const {
2085  ModuleSignature Signature;
2086
2087  // Start the signature with the compiler version.
2088  Signature.add(getClangFullRepositoryVersion());
2089
2090  // Extend the signature with the language options
2091#define LANGOPT(Name, Bits, Default, Description) \
2092  Signature.add(LangOpts->Name, Bits);
2093#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2094  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2095#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2096#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2097#include "clang/Basic/LangOptions.def"
2098
2099  // Extend the signature with the target triple
2100  llvm::Triple T(TargetOpts.Triple);
2101  Signature.add((unsigned)T.getArch(), 5);
2102  Signature.add((unsigned)T.getVendor(), 4);
2103  Signature.add((unsigned)T.getOS(), 5);
2104  Signature.add((unsigned)T.getEnvironment(), 4);
2105
2106  // Extend the signature with preprocessor options.
2107  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2108  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2109
2110  // Hash the preprocessor defines.
2111  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2112  std::vector<StringRef> MacroDefs;
2113  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2114            I = getPreprocessorOpts().Macros.begin(),
2115         IEnd = getPreprocessorOpts().Macros.end();
2116       I != IEnd; ++I) {
2117    if (!I->second)
2118      MacroDefs.push_back(I->first);
2119  }
2120  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2121
2122  unsigned PPHashResult = 0;
2123  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2124    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2125  Signature.add(PPHashResult, 32);
2126
2127  // We've generated the signature. Treat it as one large APInt that we'll
2128  // encode in base-36 and return.
2129  Signature.flush();
2130  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2131}
2132