File: | tools/clang/lib/Frontend/CompilerInstance.cpp |
Warning: | line 873, column 14 Called C++ object pointer is null |
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1 | //===--- CompilerInstance.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/CompilerInstance.h" | |||
11 | #include "clang/AST/ASTConsumer.h" | |||
12 | #include "clang/AST/ASTContext.h" | |||
13 | #include "clang/AST/Decl.h" | |||
14 | #include "clang/Basic/CharInfo.h" | |||
15 | #include "clang/Basic/Diagnostic.h" | |||
16 | #include "clang/Basic/FileManager.h" | |||
17 | #include "clang/Basic/MemoryBufferCache.h" | |||
18 | #include "clang/Basic/SourceManager.h" | |||
19 | #include "clang/Basic/TargetInfo.h" | |||
20 | #include "clang/Basic/Version.h" | |||
21 | #include "clang/Config/config.h" | |||
22 | #include "clang/Frontend/ChainedDiagnosticConsumer.h" | |||
23 | #include "clang/Frontend/FrontendAction.h" | |||
24 | #include "clang/Frontend/FrontendActions.h" | |||
25 | #include "clang/Frontend/FrontendDiagnostic.h" | |||
26 | #include "clang/Frontend/LogDiagnosticPrinter.h" | |||
27 | #include "clang/Frontend/SerializedDiagnosticPrinter.h" | |||
28 | #include "clang/Frontend/TextDiagnosticPrinter.h" | |||
29 | #include "clang/Frontend/Utils.h" | |||
30 | #include "clang/Frontend/VerifyDiagnosticConsumer.h" | |||
31 | #include "clang/Lex/HeaderSearch.h" | |||
32 | #include "clang/Lex/PTHManager.h" | |||
33 | #include "clang/Lex/Preprocessor.h" | |||
34 | #include "clang/Lex/PreprocessorOptions.h" | |||
35 | #include "clang/Sema/CodeCompleteConsumer.h" | |||
36 | #include "clang/Sema/Sema.h" | |||
37 | #include "clang/Serialization/ASTReader.h" | |||
38 | #include "clang/Serialization/GlobalModuleIndex.h" | |||
39 | #include "llvm/ADT/Statistic.h" | |||
40 | #include "llvm/Support/CrashRecoveryContext.h" | |||
41 | #include "llvm/Support/Errc.h" | |||
42 | #include "llvm/Support/FileSystem.h" | |||
43 | #include "llvm/Support/Host.h" | |||
44 | #include "llvm/Support/LockFileManager.h" | |||
45 | #include "llvm/Support/MemoryBuffer.h" | |||
46 | #include "llvm/Support/Path.h" | |||
47 | #include "llvm/Support/Program.h" | |||
48 | #include "llvm/Support/Signals.h" | |||
49 | #include "llvm/Support/Timer.h" | |||
50 | #include "llvm/Support/raw_ostream.h" | |||
51 | #include <sys/stat.h> | |||
52 | #include <system_error> | |||
53 | #include <time.h> | |||
54 | #include <utility> | |||
55 | ||||
56 | using namespace clang; | |||
57 | ||||
58 | CompilerInstance::CompilerInstance( | |||
59 | std::shared_ptr<PCHContainerOperations> PCHContainerOps, | |||
60 | MemoryBufferCache *SharedPCMCache) | |||
61 | : ModuleLoader(/* BuildingModule = */ SharedPCMCache), | |||
62 | Invocation(new CompilerInvocation()), | |||
63 | PCMCache(SharedPCMCache ? SharedPCMCache : new MemoryBufferCache), | |||
64 | ThePCHContainerOperations(std::move(PCHContainerOps)) { | |||
65 | // Don't allow this to invalidate buffers in use by others. | |||
66 | if (SharedPCMCache) | |||
67 | getPCMCache().finalizeCurrentBuffers(); | |||
68 | } | |||
69 | ||||
70 | CompilerInstance::~CompilerInstance() { | |||
71 | assert(OutputFiles.empty() && "Still output files in flight?")(static_cast <bool> (OutputFiles.empty() && "Still output files in flight?" ) ? void (0) : __assert_fail ("OutputFiles.empty() && \"Still output files in flight?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 71, __extension__ __PRETTY_FUNCTION__)); | |||
72 | } | |||
73 | ||||
74 | void CompilerInstance::setInvocation( | |||
75 | std::shared_ptr<CompilerInvocation> Value) { | |||
76 | Invocation = std::move(Value); | |||
77 | } | |||
78 | ||||
79 | bool CompilerInstance::shouldBuildGlobalModuleIndex() const { | |||
80 | return (BuildGlobalModuleIndex || | |||
81 | (ModuleManager && ModuleManager->isGlobalIndexUnavailable() && | |||
82 | getFrontendOpts().GenerateGlobalModuleIndex)) && | |||
83 | !ModuleBuildFailed; | |||
84 | } | |||
85 | ||||
86 | void CompilerInstance::setDiagnostics(DiagnosticsEngine *Value) { | |||
87 | Diagnostics = Value; | |||
88 | } | |||
89 | ||||
90 | void CompilerInstance::setTarget(TargetInfo *Value) { Target = Value; } | |||
91 | void CompilerInstance::setAuxTarget(TargetInfo *Value) { AuxTarget = Value; } | |||
92 | ||||
93 | void CompilerInstance::setFileManager(FileManager *Value) { | |||
94 | FileMgr = Value; | |||
95 | if (Value) | |||
96 | VirtualFileSystem = Value->getVirtualFileSystem(); | |||
97 | else | |||
98 | VirtualFileSystem.reset(); | |||
99 | } | |||
100 | ||||
101 | void CompilerInstance::setSourceManager(SourceManager *Value) { | |||
102 | SourceMgr = Value; | |||
103 | } | |||
104 | ||||
105 | void CompilerInstance::setPreprocessor(std::shared_ptr<Preprocessor> Value) { | |||
106 | PP = std::move(Value); | |||
107 | } | |||
108 | ||||
109 | void CompilerInstance::setASTContext(ASTContext *Value) { | |||
110 | Context = Value; | |||
111 | ||||
112 | if (Context && Consumer) | |||
113 | getASTConsumer().Initialize(getASTContext()); | |||
114 | } | |||
115 | ||||
116 | void CompilerInstance::setSema(Sema *S) { | |||
117 | TheSema.reset(S); | |||
118 | } | |||
119 | ||||
120 | void CompilerInstance::setASTConsumer(std::unique_ptr<ASTConsumer> Value) { | |||
121 | Consumer = std::move(Value); | |||
122 | ||||
123 | if (Context && Consumer) | |||
124 | getASTConsumer().Initialize(getASTContext()); | |||
125 | } | |||
126 | ||||
127 | void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) { | |||
128 | CompletionConsumer.reset(Value); | |||
129 | } | |||
130 | ||||
131 | std::unique_ptr<Sema> CompilerInstance::takeSema() { | |||
132 | return std::move(TheSema); | |||
133 | } | |||
134 | ||||
135 | IntrusiveRefCntPtr<ASTReader> CompilerInstance::getModuleManager() const { | |||
136 | return ModuleManager; | |||
137 | } | |||
138 | void CompilerInstance::setModuleManager(IntrusiveRefCntPtr<ASTReader> Reader) { | |||
139 | assert(PCMCache.get() == &Reader->getModuleManager().getPCMCache() &&(static_cast <bool> (PCMCache.get() == &Reader-> getModuleManager().getPCMCache() && "Expected ASTReader to use the same PCM cache" ) ? void (0) : __assert_fail ("PCMCache.get() == &Reader->getModuleManager().getPCMCache() && \"Expected ASTReader to use the same PCM cache\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 140, __extension__ __PRETTY_FUNCTION__)) | |||
140 | "Expected ASTReader to use the same PCM cache")(static_cast <bool> (PCMCache.get() == &Reader-> getModuleManager().getPCMCache() && "Expected ASTReader to use the same PCM cache" ) ? void (0) : __assert_fail ("PCMCache.get() == &Reader->getModuleManager().getPCMCache() && \"Expected ASTReader to use the same PCM cache\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 140, __extension__ __PRETTY_FUNCTION__)); | |||
141 | ModuleManager = std::move(Reader); | |||
142 | } | |||
143 | ||||
144 | std::shared_ptr<ModuleDependencyCollector> | |||
145 | CompilerInstance::getModuleDepCollector() const { | |||
146 | return ModuleDepCollector; | |||
147 | } | |||
148 | ||||
149 | void CompilerInstance::setModuleDepCollector( | |||
150 | std::shared_ptr<ModuleDependencyCollector> Collector) { | |||
151 | ModuleDepCollector = std::move(Collector); | |||
152 | } | |||
153 | ||||
154 | static void collectHeaderMaps(const HeaderSearch &HS, | |||
155 | std::shared_ptr<ModuleDependencyCollector> MDC) { | |||
156 | SmallVector<std::string, 4> HeaderMapFileNames; | |||
157 | HS.getHeaderMapFileNames(HeaderMapFileNames); | |||
158 | for (auto &Name : HeaderMapFileNames) | |||
159 | MDC->addFile(Name); | |||
160 | } | |||
161 | ||||
162 | static void collectIncludePCH(CompilerInstance &CI, | |||
163 | std::shared_ptr<ModuleDependencyCollector> MDC) { | |||
164 | const PreprocessorOptions &PPOpts = CI.getPreprocessorOpts(); | |||
165 | if (PPOpts.ImplicitPCHInclude.empty()) | |||
166 | return; | |||
167 | ||||
168 | StringRef PCHInclude = PPOpts.ImplicitPCHInclude; | |||
169 | FileManager &FileMgr = CI.getFileManager(); | |||
170 | const DirectoryEntry *PCHDir = FileMgr.getDirectory(PCHInclude); | |||
171 | if (!PCHDir) { | |||
172 | MDC->addFile(PCHInclude); | |||
173 | return; | |||
174 | } | |||
175 | ||||
176 | std::error_code EC; | |||
177 | SmallString<128> DirNative; | |||
178 | llvm::sys::path::native(PCHDir->getName(), DirNative); | |||
179 | vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem(); | |||
180 | SimpleASTReaderListener Validator(CI.getPreprocessor()); | |||
181 | for (vfs::directory_iterator Dir = FS.dir_begin(DirNative, EC), DirEnd; | |||
182 | Dir != DirEnd && !EC; Dir.increment(EC)) { | |||
183 | // Check whether this is an AST file. ASTReader::isAcceptableASTFile is not | |||
184 | // used here since we're not interested in validating the PCH at this time, | |||
185 | // but only to check whether this is a file containing an AST. | |||
186 | if (!ASTReader::readASTFileControlBlock( | |||
187 | Dir->getName(), FileMgr, CI.getPCHContainerReader(), | |||
188 | /*FindModuleFileExtensions=*/false, Validator, | |||
189 | /*ValidateDiagnosticOptions=*/false)) | |||
190 | MDC->addFile(Dir->getName()); | |||
191 | } | |||
192 | } | |||
193 | ||||
194 | static void collectVFSEntries(CompilerInstance &CI, | |||
195 | std::shared_ptr<ModuleDependencyCollector> MDC) { | |||
196 | if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) | |||
197 | return; | |||
198 | ||||
199 | // Collect all VFS found. | |||
200 | SmallVector<vfs::YAMLVFSEntry, 16> VFSEntries; | |||
201 | for (const std::string &VFSFile : CI.getHeaderSearchOpts().VFSOverlayFiles) { | |||
202 | llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = | |||
203 | llvm::MemoryBuffer::getFile(VFSFile); | |||
204 | if (!Buffer) | |||
205 | return; | |||
206 | vfs::collectVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr, | |||
207 | VFSFile, VFSEntries); | |||
208 | } | |||
209 | ||||
210 | for (auto &E : VFSEntries) | |||
211 | MDC->addFile(E.VPath, E.RPath); | |||
212 | } | |||
213 | ||||
214 | // Diagnostics | |||
215 | static void SetUpDiagnosticLog(DiagnosticOptions *DiagOpts, | |||
216 | const CodeGenOptions *CodeGenOpts, | |||
217 | DiagnosticsEngine &Diags) { | |||
218 | std::error_code EC; | |||
219 | std::unique_ptr<raw_ostream> StreamOwner; | |||
220 | raw_ostream *OS = &llvm::errs(); | |||
221 | if (DiagOpts->DiagnosticLogFile != "-") { | |||
222 | // Create the output stream. | |||
223 | auto FileOS = llvm::make_unique<llvm::raw_fd_ostream>( | |||
224 | DiagOpts->DiagnosticLogFile, EC, | |||
225 | llvm::sys::fs::F_Append | llvm::sys::fs::F_Text); | |||
226 | if (EC) { | |||
227 | Diags.Report(diag::warn_fe_cc_log_diagnostics_failure) | |||
228 | << DiagOpts->DiagnosticLogFile << EC.message(); | |||
229 | } else { | |||
230 | FileOS->SetUnbuffered(); | |||
231 | OS = FileOS.get(); | |||
232 | StreamOwner = std::move(FileOS); | |||
233 | } | |||
234 | } | |||
235 | ||||
236 | // Chain in the diagnostic client which will log the diagnostics. | |||
237 | auto Logger = llvm::make_unique<LogDiagnosticPrinter>(*OS, DiagOpts, | |||
238 | std::move(StreamOwner)); | |||
239 | if (CodeGenOpts) | |||
240 | Logger->setDwarfDebugFlags(CodeGenOpts->DwarfDebugFlags); | |||
241 | assert(Diags.ownsClient())(static_cast <bool> (Diags.ownsClient()) ? void (0) : __assert_fail ("Diags.ownsClient()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 241, __extension__ __PRETTY_FUNCTION__)); | |||
242 | Diags.setClient( | |||
243 | new ChainedDiagnosticConsumer(Diags.takeClient(), std::move(Logger))); | |||
244 | } | |||
245 | ||||
246 | static void SetupSerializedDiagnostics(DiagnosticOptions *DiagOpts, | |||
247 | DiagnosticsEngine &Diags, | |||
248 | StringRef OutputFile) { | |||
249 | auto SerializedConsumer = | |||
250 | clang::serialized_diags::create(OutputFile, DiagOpts); | |||
251 | ||||
252 | if (Diags.ownsClient()) { | |||
253 | Diags.setClient(new ChainedDiagnosticConsumer( | |||
254 | Diags.takeClient(), std::move(SerializedConsumer))); | |||
255 | } else { | |||
256 | Diags.setClient(new ChainedDiagnosticConsumer( | |||
257 | Diags.getClient(), std::move(SerializedConsumer))); | |||
258 | } | |||
259 | } | |||
260 | ||||
261 | void CompilerInstance::createDiagnostics(DiagnosticConsumer *Client, | |||
262 | bool ShouldOwnClient) { | |||
263 | Diagnostics = createDiagnostics(&getDiagnosticOpts(), Client, | |||
264 | ShouldOwnClient, &getCodeGenOpts()); | |||
265 | } | |||
266 | ||||
267 | IntrusiveRefCntPtr<DiagnosticsEngine> | |||
268 | CompilerInstance::createDiagnostics(DiagnosticOptions *Opts, | |||
269 | DiagnosticConsumer *Client, | |||
270 | bool ShouldOwnClient, | |||
271 | const CodeGenOptions *CodeGenOpts) { | |||
272 | IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); | |||
273 | IntrusiveRefCntPtr<DiagnosticsEngine> | |||
274 | Diags(new DiagnosticsEngine(DiagID, Opts)); | |||
275 | ||||
276 | // Create the diagnostic client for reporting errors or for | |||
277 | // implementing -verify. | |||
278 | if (Client) { | |||
279 | Diags->setClient(Client, ShouldOwnClient); | |||
280 | } else | |||
281 | Diags->setClient(new TextDiagnosticPrinter(llvm::errs(), Opts)); | |||
282 | ||||
283 | // Chain in -verify checker, if requested. | |||
284 | if (Opts->VerifyDiagnostics) | |||
285 | Diags->setClient(new VerifyDiagnosticConsumer(*Diags)); | |||
286 | ||||
287 | // Chain in -diagnostic-log-file dumper, if requested. | |||
288 | if (!Opts->DiagnosticLogFile.empty()) | |||
289 | SetUpDiagnosticLog(Opts, CodeGenOpts, *Diags); | |||
290 | ||||
291 | if (!Opts->DiagnosticSerializationFile.empty()) | |||
292 | SetupSerializedDiagnostics(Opts, *Diags, | |||
293 | Opts->DiagnosticSerializationFile); | |||
294 | ||||
295 | // Configure our handling of diagnostics. | |||
296 | ProcessWarningOptions(*Diags, *Opts); | |||
297 | ||||
298 | return Diags; | |||
299 | } | |||
300 | ||||
301 | // File Manager | |||
302 | ||||
303 | FileManager *CompilerInstance::createFileManager() { | |||
304 | if (!hasVirtualFileSystem()) { | |||
305 | IntrusiveRefCntPtr<vfs::FileSystem> VFS = | |||
306 | createVFSFromCompilerInvocation(getInvocation(), getDiagnostics()); | |||
307 | setVirtualFileSystem(VFS); | |||
308 | } | |||
309 | FileMgr = new FileManager(getFileSystemOpts(), VirtualFileSystem); | |||
310 | return FileMgr.get(); | |||
311 | } | |||
312 | ||||
313 | // Source Manager | |||
314 | ||||
315 | void CompilerInstance::createSourceManager(FileManager &FileMgr) { | |||
316 | SourceMgr = new SourceManager(getDiagnostics(), FileMgr); | |||
317 | } | |||
318 | ||||
319 | // Initialize the remapping of files to alternative contents, e.g., | |||
320 | // those specified through other files. | |||
321 | static void InitializeFileRemapping(DiagnosticsEngine &Diags, | |||
322 | SourceManager &SourceMgr, | |||
323 | FileManager &FileMgr, | |||
324 | const PreprocessorOptions &InitOpts) { | |||
325 | // Remap files in the source manager (with buffers). | |||
326 | for (const auto &RB : InitOpts.RemappedFileBuffers) { | |||
327 | // Create the file entry for the file that we're mapping from. | |||
328 | const FileEntry *FromFile = | |||
329 | FileMgr.getVirtualFile(RB.first, RB.second->getBufferSize(), 0); | |||
330 | if (!FromFile) { | |||
331 | Diags.Report(diag::err_fe_remap_missing_from_file) << RB.first; | |||
332 | if (!InitOpts.RetainRemappedFileBuffers) | |||
333 | delete RB.second; | |||
334 | continue; | |||
335 | } | |||
336 | ||||
337 | // Override the contents of the "from" file with the contents of | |||
338 | // the "to" file. | |||
339 | SourceMgr.overrideFileContents(FromFile, RB.second, | |||
340 | InitOpts.RetainRemappedFileBuffers); | |||
341 | } | |||
342 | ||||
343 | // Remap files in the source manager (with other files). | |||
344 | for (const auto &RF : InitOpts.RemappedFiles) { | |||
345 | // Find the file that we're mapping to. | |||
346 | const FileEntry *ToFile = FileMgr.getFile(RF.second); | |||
347 | if (!ToFile) { | |||
348 | Diags.Report(diag::err_fe_remap_missing_to_file) << RF.first << RF.second; | |||
349 | continue; | |||
350 | } | |||
351 | ||||
352 | // Create the file entry for the file that we're mapping from. | |||
353 | const FileEntry *FromFile = | |||
354 | FileMgr.getVirtualFile(RF.first, ToFile->getSize(), 0); | |||
355 | if (!FromFile) { | |||
356 | Diags.Report(diag::err_fe_remap_missing_from_file) << RF.first; | |||
357 | continue; | |||
358 | } | |||
359 | ||||
360 | // Override the contents of the "from" file with the contents of | |||
361 | // the "to" file. | |||
362 | SourceMgr.overrideFileContents(FromFile, ToFile); | |||
363 | } | |||
364 | ||||
365 | SourceMgr.setOverridenFilesKeepOriginalName( | |||
366 | InitOpts.RemappedFilesKeepOriginalName); | |||
367 | } | |||
368 | ||||
369 | // Preprocessor | |||
370 | ||||
371 | void CompilerInstance::createPreprocessor(TranslationUnitKind TUKind) { | |||
372 | const PreprocessorOptions &PPOpts = getPreprocessorOpts(); | |||
373 | ||||
374 | // Create a PTH manager if we are using some form of a token cache. | |||
375 | PTHManager *PTHMgr = nullptr; | |||
376 | if (!PPOpts.TokenCache.empty()) | |||
377 | PTHMgr = PTHManager::Create(PPOpts.TokenCache, getDiagnostics()); | |||
378 | ||||
379 | // Create the Preprocessor. | |||
380 | HeaderSearch *HeaderInfo = | |||
381 | new HeaderSearch(getHeaderSearchOptsPtr(), getSourceManager(), | |||
382 | getDiagnostics(), getLangOpts(), &getTarget()); | |||
383 | PP = std::make_shared<Preprocessor>( | |||
384 | Invocation->getPreprocessorOptsPtr(), getDiagnostics(), getLangOpts(), | |||
385 | getSourceManager(), getPCMCache(), *HeaderInfo, *this, PTHMgr, | |||
386 | /*OwnsHeaderSearch=*/true, TUKind); | |||
387 | getTarget().adjust(getLangOpts()); | |||
388 | PP->Initialize(getTarget(), getAuxTarget()); | |||
389 | ||||
390 | // Note that this is different then passing PTHMgr to Preprocessor's ctor. | |||
391 | // That argument is used as the IdentifierInfoLookup argument to | |||
392 | // IdentifierTable's ctor. | |||
393 | if (PTHMgr) { | |||
394 | PTHMgr->setPreprocessor(&*PP); | |||
395 | PP->setPTHManager(PTHMgr); | |||
396 | } | |||
397 | ||||
398 | if (PPOpts.DetailedRecord) | |||
399 | PP->createPreprocessingRecord(); | |||
400 | ||||
401 | // Apply remappings to the source manager. | |||
402 | InitializeFileRemapping(PP->getDiagnostics(), PP->getSourceManager(), | |||
403 | PP->getFileManager(), PPOpts); | |||
404 | ||||
405 | // Predefine macros and configure the preprocessor. | |||
406 | InitializePreprocessor(*PP, PPOpts, getPCHContainerReader(), | |||
407 | getFrontendOpts()); | |||
408 | ||||
409 | // Initialize the header search object. In CUDA compilations, we use the aux | |||
410 | // triple (the host triple) to initialize our header search, since we need to | |||
411 | // find the host headers in order to compile the CUDA code. | |||
412 | const llvm::Triple *HeaderSearchTriple = &PP->getTargetInfo().getTriple(); | |||
413 | if (PP->getTargetInfo().getTriple().getOS() == llvm::Triple::CUDA && | |||
414 | PP->getAuxTargetInfo()) | |||
415 | HeaderSearchTriple = &PP->getAuxTargetInfo()->getTriple(); | |||
416 | ||||
417 | ApplyHeaderSearchOptions(PP->getHeaderSearchInfo(), getHeaderSearchOpts(), | |||
418 | PP->getLangOpts(), *HeaderSearchTriple); | |||
419 | ||||
420 | PP->setPreprocessedOutput(getPreprocessorOutputOpts().ShowCPP); | |||
421 | ||||
422 | if (PP->getLangOpts().Modules && PP->getLangOpts().ImplicitModules) | |||
423 | PP->getHeaderSearchInfo().setModuleCachePath(getSpecificModuleCachePath()); | |||
424 | ||||
425 | // Handle generating dependencies, if requested. | |||
426 | const DependencyOutputOptions &DepOpts = getDependencyOutputOpts(); | |||
427 | if (!DepOpts.OutputFile.empty()) | |||
428 | TheDependencyFileGenerator.reset( | |||
429 | DependencyFileGenerator::CreateAndAttachToPreprocessor(*PP, DepOpts)); | |||
430 | if (!DepOpts.DOTOutputFile.empty()) | |||
431 | AttachDependencyGraphGen(*PP, DepOpts.DOTOutputFile, | |||
432 | getHeaderSearchOpts().Sysroot); | |||
433 | ||||
434 | // If we don't have a collector, but we are collecting module dependencies, | |||
435 | // then we're the top level compiler instance and need to create one. | |||
436 | if (!ModuleDepCollector && !DepOpts.ModuleDependencyOutputDir.empty()) { | |||
437 | ModuleDepCollector = std::make_shared<ModuleDependencyCollector>( | |||
438 | DepOpts.ModuleDependencyOutputDir); | |||
439 | } | |||
440 | ||||
441 | // If there is a module dep collector, register with other dep collectors | |||
442 | // and also (a) collect header maps and (b) TODO: input vfs overlay files. | |||
443 | if (ModuleDepCollector) { | |||
444 | addDependencyCollector(ModuleDepCollector); | |||
445 | collectHeaderMaps(PP->getHeaderSearchInfo(), ModuleDepCollector); | |||
446 | collectIncludePCH(*this, ModuleDepCollector); | |||
447 | collectVFSEntries(*this, ModuleDepCollector); | |||
448 | } | |||
449 | ||||
450 | for (auto &Listener : DependencyCollectors) | |||
451 | Listener->attachToPreprocessor(*PP); | |||
452 | ||||
453 | // Handle generating header include information, if requested. | |||
454 | if (DepOpts.ShowHeaderIncludes) | |||
455 | AttachHeaderIncludeGen(*PP, DepOpts); | |||
456 | if (!DepOpts.HeaderIncludeOutputFile.empty()) { | |||
457 | StringRef OutputPath = DepOpts.HeaderIncludeOutputFile; | |||
458 | if (OutputPath == "-") | |||
459 | OutputPath = ""; | |||
460 | AttachHeaderIncludeGen(*PP, DepOpts, | |||
461 | /*ShowAllHeaders=*/true, OutputPath, | |||
462 | /*ShowDepth=*/false); | |||
463 | } | |||
464 | ||||
465 | if (DepOpts.PrintShowIncludes) { | |||
466 | AttachHeaderIncludeGen(*PP, DepOpts, | |||
467 | /*ShowAllHeaders=*/true, /*OutputPath=*/"", | |||
468 | /*ShowDepth=*/true, /*MSStyle=*/true); | |||
469 | } | |||
470 | } | |||
471 | ||||
472 | std::string CompilerInstance::getSpecificModuleCachePath() { | |||
473 | // Set up the module path, including the hash for the | |||
474 | // module-creation options. | |||
475 | SmallString<256> SpecificModuleCache(getHeaderSearchOpts().ModuleCachePath); | |||
476 | if (!SpecificModuleCache.empty() && !getHeaderSearchOpts().DisableModuleHash) | |||
477 | llvm::sys::path::append(SpecificModuleCache, | |||
478 | getInvocation().getModuleHash()); | |||
479 | return SpecificModuleCache.str(); | |||
480 | } | |||
481 | ||||
482 | // ASTContext | |||
483 | ||||
484 | void CompilerInstance::createASTContext() { | |||
485 | Preprocessor &PP = getPreprocessor(); | |||
486 | auto *Context = new ASTContext(getLangOpts(), PP.getSourceManager(), | |||
487 | PP.getIdentifierTable(), PP.getSelectorTable(), | |||
488 | PP.getBuiltinInfo()); | |||
489 | Context->InitBuiltinTypes(getTarget(), getAuxTarget()); | |||
490 | setASTContext(Context); | |||
491 | } | |||
492 | ||||
493 | // ExternalASTSource | |||
494 | ||||
495 | void CompilerInstance::createPCHExternalASTSource( | |||
496 | StringRef Path, bool DisablePCHValidation, bool AllowPCHWithCompilerErrors, | |||
497 | void *DeserializationListener, bool OwnDeserializationListener) { | |||
498 | bool Preamble = getPreprocessorOpts().PrecompiledPreambleBytes.first != 0; | |||
499 | ModuleManager = createPCHExternalASTSource( | |||
500 | Path, getHeaderSearchOpts().Sysroot, DisablePCHValidation, | |||
501 | AllowPCHWithCompilerErrors, getPreprocessor(), getASTContext(), | |||
502 | getPCHContainerReader(), | |||
503 | getFrontendOpts().ModuleFileExtensions, | |||
504 | TheDependencyFileGenerator.get(), | |||
505 | DependencyCollectors, | |||
506 | DeserializationListener, | |||
507 | OwnDeserializationListener, Preamble, | |||
508 | getFrontendOpts().UseGlobalModuleIndex); | |||
509 | } | |||
510 | ||||
511 | IntrusiveRefCntPtr<ASTReader> CompilerInstance::createPCHExternalASTSource( | |||
512 | StringRef Path, StringRef Sysroot, bool DisablePCHValidation, | |||
513 | bool AllowPCHWithCompilerErrors, Preprocessor &PP, ASTContext &Context, | |||
514 | const PCHContainerReader &PCHContainerRdr, | |||
515 | ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions, | |||
516 | DependencyFileGenerator *DependencyFile, | |||
517 | ArrayRef<std::shared_ptr<DependencyCollector>> DependencyCollectors, | |||
518 | void *DeserializationListener, bool OwnDeserializationListener, | |||
519 | bool Preamble, bool UseGlobalModuleIndex) { | |||
520 | HeaderSearchOptions &HSOpts = PP.getHeaderSearchInfo().getHeaderSearchOpts(); | |||
521 | ||||
522 | IntrusiveRefCntPtr<ASTReader> Reader(new ASTReader( | |||
523 | PP, &Context, PCHContainerRdr, Extensions, | |||
524 | Sysroot.empty() ? "" : Sysroot.data(), DisablePCHValidation, | |||
525 | AllowPCHWithCompilerErrors, /*AllowConfigurationMismatch*/ false, | |||
526 | HSOpts.ModulesValidateSystemHeaders, UseGlobalModuleIndex)); | |||
527 | ||||
528 | // We need the external source to be set up before we read the AST, because | |||
529 | // eagerly-deserialized declarations may use it. | |||
530 | Context.setExternalSource(Reader.get()); | |||
531 | ||||
532 | Reader->setDeserializationListener( | |||
533 | static_cast<ASTDeserializationListener *>(DeserializationListener), | |||
534 | /*TakeOwnership=*/OwnDeserializationListener); | |||
535 | ||||
536 | if (DependencyFile) | |||
537 | DependencyFile->AttachToASTReader(*Reader); | |||
538 | for (auto &Listener : DependencyCollectors) | |||
539 | Listener->attachToASTReader(*Reader); | |||
540 | ||||
541 | switch (Reader->ReadAST(Path, | |||
542 | Preamble ? serialization::MK_Preamble | |||
543 | : serialization::MK_PCH, | |||
544 | SourceLocation(), | |||
545 | ASTReader::ARR_None)) { | |||
546 | case ASTReader::Success: | |||
547 | // Set the predefines buffer as suggested by the PCH reader. Typically, the | |||
548 | // predefines buffer will be empty. | |||
549 | PP.setPredefines(Reader->getSuggestedPredefines()); | |||
550 | return Reader; | |||
551 | ||||
552 | case ASTReader::Failure: | |||
553 | // Unrecoverable failure: don't even try to process the input file. | |||
554 | break; | |||
555 | ||||
556 | case ASTReader::Missing: | |||
557 | case ASTReader::OutOfDate: | |||
558 | case ASTReader::VersionMismatch: | |||
559 | case ASTReader::ConfigurationMismatch: | |||
560 | case ASTReader::HadErrors: | |||
561 | // No suitable PCH file could be found. Return an error. | |||
562 | break; | |||
563 | } | |||
564 | ||||
565 | Context.setExternalSource(nullptr); | |||
566 | return nullptr; | |||
567 | } | |||
568 | ||||
569 | // Code Completion | |||
570 | ||||
571 | static bool EnableCodeCompletion(Preprocessor &PP, | |||
572 | StringRef Filename, | |||
573 | unsigned Line, | |||
574 | unsigned Column) { | |||
575 | // Tell the source manager to chop off the given file at a specific | |||
576 | // line and column. | |||
577 | const FileEntry *Entry = PP.getFileManager().getFile(Filename); | |||
578 | if (!Entry) { | |||
579 | PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file) | |||
580 | << Filename; | |||
581 | return true; | |||
582 | } | |||
583 | ||||
584 | // Truncate the named file at the given line/column. | |||
585 | PP.SetCodeCompletionPoint(Entry, Line, Column); | |||
586 | return false; | |||
587 | } | |||
588 | ||||
589 | void CompilerInstance::createCodeCompletionConsumer() { | |||
590 | const ParsedSourceLocation &Loc = getFrontendOpts().CodeCompletionAt; | |||
591 | if (!CompletionConsumer) { | |||
592 | setCodeCompletionConsumer( | |||
593 | createCodeCompletionConsumer(getPreprocessor(), | |||
594 | Loc.FileName, Loc.Line, Loc.Column, | |||
595 | getFrontendOpts().CodeCompleteOpts, | |||
596 | llvm::outs())); | |||
597 | if (!CompletionConsumer) | |||
598 | return; | |||
599 | } else if (EnableCodeCompletion(getPreprocessor(), Loc.FileName, | |||
600 | Loc.Line, Loc.Column)) { | |||
601 | setCodeCompletionConsumer(nullptr); | |||
602 | return; | |||
603 | } | |||
604 | ||||
605 | if (CompletionConsumer->isOutputBinary() && | |||
606 | llvm::sys::ChangeStdoutToBinary()) { | |||
607 | getPreprocessor().getDiagnostics().Report(diag::err_fe_stdout_binary); | |||
608 | setCodeCompletionConsumer(nullptr); | |||
609 | } | |||
610 | } | |||
611 | ||||
612 | void CompilerInstance::createFrontendTimer() { | |||
613 | FrontendTimerGroup.reset( | |||
614 | new llvm::TimerGroup("frontend", "Clang front-end time report")); | |||
615 | FrontendTimer.reset( | |||
616 | new llvm::Timer("frontend", "Clang front-end timer", | |||
617 | *FrontendTimerGroup)); | |||
618 | } | |||
619 | ||||
620 | CodeCompleteConsumer * | |||
621 | CompilerInstance::createCodeCompletionConsumer(Preprocessor &PP, | |||
622 | StringRef Filename, | |||
623 | unsigned Line, | |||
624 | unsigned Column, | |||
625 | const CodeCompleteOptions &Opts, | |||
626 | raw_ostream &OS) { | |||
627 | if (EnableCodeCompletion(PP, Filename, Line, Column)) | |||
628 | return nullptr; | |||
629 | ||||
630 | // Set up the creation routine for code-completion. | |||
631 | return new PrintingCodeCompleteConsumer(Opts, OS); | |||
632 | } | |||
633 | ||||
634 | void CompilerInstance::createSema(TranslationUnitKind TUKind, | |||
635 | CodeCompleteConsumer *CompletionConsumer) { | |||
636 | TheSema.reset(new Sema(getPreprocessor(), getASTContext(), getASTConsumer(), | |||
637 | TUKind, CompletionConsumer)); | |||
638 | // Attach the external sema source if there is any. | |||
639 | if (ExternalSemaSrc) { | |||
640 | TheSema->addExternalSource(ExternalSemaSrc.get()); | |||
641 | ExternalSemaSrc->InitializeSema(*TheSema); | |||
642 | } | |||
643 | } | |||
644 | ||||
645 | // Output Files | |||
646 | ||||
647 | void CompilerInstance::addOutputFile(OutputFile &&OutFile) { | |||
648 | OutputFiles.push_back(std::move(OutFile)); | |||
649 | } | |||
650 | ||||
651 | void CompilerInstance::clearOutputFiles(bool EraseFiles) { | |||
652 | for (OutputFile &OF : OutputFiles) { | |||
653 | if (!OF.TempFilename.empty()) { | |||
654 | if (EraseFiles) { | |||
655 | llvm::sys::fs::remove(OF.TempFilename); | |||
656 | } else { | |||
657 | SmallString<128> NewOutFile(OF.Filename); | |||
658 | ||||
659 | // If '-working-directory' was passed, the output filename should be | |||
660 | // relative to that. | |||
661 | FileMgr->FixupRelativePath(NewOutFile); | |||
662 | if (std::error_code ec = | |||
663 | llvm::sys::fs::rename(OF.TempFilename, NewOutFile)) { | |||
664 | getDiagnostics().Report(diag::err_unable_to_rename_temp) | |||
665 | << OF.TempFilename << OF.Filename << ec.message(); | |||
666 | ||||
667 | llvm::sys::fs::remove(OF.TempFilename); | |||
668 | } | |||
669 | } | |||
670 | } else if (!OF.Filename.empty() && EraseFiles) | |||
671 | llvm::sys::fs::remove(OF.Filename); | |||
672 | } | |||
673 | OutputFiles.clear(); | |||
674 | if (DeleteBuiltModules) { | |||
675 | for (auto &Module : BuiltModules) | |||
676 | llvm::sys::fs::remove(Module.second); | |||
677 | BuiltModules.clear(); | |||
678 | } | |||
679 | NonSeekStream.reset(); | |||
680 | } | |||
681 | ||||
682 | std::unique_ptr<raw_pwrite_stream> | |||
683 | CompilerInstance::createDefaultOutputFile(bool Binary, StringRef InFile, | |||
684 | StringRef Extension) { | |||
685 | return createOutputFile(getFrontendOpts().OutputFile, Binary, | |||
686 | /*RemoveFileOnSignal=*/true, InFile, Extension, | |||
687 | /*UseTemporary=*/true); | |||
688 | } | |||
689 | ||||
690 | std::unique_ptr<raw_pwrite_stream> CompilerInstance::createNullOutputFile() { | |||
691 | return llvm::make_unique<llvm::raw_null_ostream>(); | |||
692 | } | |||
693 | ||||
694 | std::unique_ptr<raw_pwrite_stream> | |||
695 | CompilerInstance::createOutputFile(StringRef OutputPath, bool Binary, | |||
696 | bool RemoveFileOnSignal, StringRef InFile, | |||
697 | StringRef Extension, bool UseTemporary, | |||
698 | bool CreateMissingDirectories) { | |||
699 | std::string OutputPathName, TempPathName; | |||
700 | std::error_code EC; | |||
701 | std::unique_ptr<raw_pwrite_stream> OS = createOutputFile( | |||
702 | OutputPath, EC, Binary, RemoveFileOnSignal, InFile, Extension, | |||
703 | UseTemporary, CreateMissingDirectories, &OutputPathName, &TempPathName); | |||
704 | if (!OS) { | |||
705 | getDiagnostics().Report(diag::err_fe_unable_to_open_output) << OutputPath | |||
706 | << EC.message(); | |||
707 | return nullptr; | |||
708 | } | |||
709 | ||||
710 | // Add the output file -- but don't try to remove "-", since this means we are | |||
711 | // using stdin. | |||
712 | addOutputFile( | |||
713 | OutputFile((OutputPathName != "-") ? OutputPathName : "", TempPathName)); | |||
714 | ||||
715 | return OS; | |||
716 | } | |||
717 | ||||
718 | std::unique_ptr<llvm::raw_pwrite_stream> CompilerInstance::createOutputFile( | |||
719 | StringRef OutputPath, std::error_code &Error, bool Binary, | |||
720 | bool RemoveFileOnSignal, StringRef InFile, StringRef Extension, | |||
721 | bool UseTemporary, bool CreateMissingDirectories, | |||
722 | std::string *ResultPathName, std::string *TempPathName) { | |||
723 | assert((!CreateMissingDirectories || UseTemporary) &&(static_cast <bool> ((!CreateMissingDirectories || UseTemporary ) && "CreateMissingDirectories is only allowed when using temporary files" ) ? void (0) : __assert_fail ("(!CreateMissingDirectories || UseTemporary) && \"CreateMissingDirectories is only allowed when using temporary files\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 724, __extension__ __PRETTY_FUNCTION__)) | |||
724 | "CreateMissingDirectories is only allowed when using temporary files")(static_cast <bool> ((!CreateMissingDirectories || UseTemporary ) && "CreateMissingDirectories is only allowed when using temporary files" ) ? void (0) : __assert_fail ("(!CreateMissingDirectories || UseTemporary) && \"CreateMissingDirectories is only allowed when using temporary files\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 724, __extension__ __PRETTY_FUNCTION__)); | |||
725 | ||||
726 | std::string OutFile, TempFile; | |||
727 | if (!OutputPath.empty()) { | |||
728 | OutFile = OutputPath; | |||
729 | } else if (InFile == "-") { | |||
730 | OutFile = "-"; | |||
731 | } else if (!Extension.empty()) { | |||
732 | SmallString<128> Path(InFile); | |||
733 | llvm::sys::path::replace_extension(Path, Extension); | |||
734 | OutFile = Path.str(); | |||
735 | } else { | |||
736 | OutFile = "-"; | |||
737 | } | |||
738 | ||||
739 | std::unique_ptr<llvm::raw_fd_ostream> OS; | |||
740 | std::string OSFile; | |||
741 | ||||
742 | if (UseTemporary) { | |||
743 | if (OutFile == "-") | |||
744 | UseTemporary = false; | |||
745 | else { | |||
746 | llvm::sys::fs::file_status Status; | |||
747 | llvm::sys::fs::status(OutputPath, Status); | |||
748 | if (llvm::sys::fs::exists(Status)) { | |||
749 | // Fail early if we can't write to the final destination. | |||
750 | if (!llvm::sys::fs::can_write(OutputPath)) { | |||
751 | Error = make_error_code(llvm::errc::operation_not_permitted); | |||
752 | return nullptr; | |||
753 | } | |||
754 | ||||
755 | // Don't use a temporary if the output is a special file. This handles | |||
756 | // things like '-o /dev/null' | |||
757 | if (!llvm::sys::fs::is_regular_file(Status)) | |||
758 | UseTemporary = false; | |||
759 | } | |||
760 | } | |||
761 | } | |||
762 | ||||
763 | if (UseTemporary) { | |||
764 | // Create a temporary file. | |||
765 | // Insert -%%%%%%%% before the extension (if any), and because some tools | |||
766 | // (noticeable, clang's own GlobalModuleIndex.cpp) glob for build | |||
767 | // artifacts, also append .tmp. | |||
768 | StringRef OutputExtension = llvm::sys::path::extension(OutFile); | |||
769 | SmallString<128> TempPath = | |||
770 | StringRef(OutFile).drop_back(OutputExtension.size()); | |||
771 | TempPath += "-%%%%%%%%"; | |||
772 | TempPath += OutputExtension; | |||
773 | TempPath += ".tmp"; | |||
774 | int fd; | |||
775 | std::error_code EC = | |||
776 | llvm::sys::fs::createUniqueFile(TempPath, fd, TempPath); | |||
777 | ||||
778 | if (CreateMissingDirectories && | |||
779 | EC == llvm::errc::no_such_file_or_directory) { | |||
780 | StringRef Parent = llvm::sys::path::parent_path(OutputPath); | |||
781 | EC = llvm::sys::fs::create_directories(Parent); | |||
782 | if (!EC) { | |||
783 | EC = llvm::sys::fs::createUniqueFile(TempPath, fd, TempPath); | |||
784 | } | |||
785 | } | |||
786 | ||||
787 | if (!EC) { | |||
788 | OS.reset(new llvm::raw_fd_ostream(fd, /*shouldClose=*/true)); | |||
789 | OSFile = TempFile = TempPath.str(); | |||
790 | } | |||
791 | // If we failed to create the temporary, fallback to writing to the file | |||
792 | // directly. This handles the corner case where we cannot write to the | |||
793 | // directory, but can write to the file. | |||
794 | } | |||
795 | ||||
796 | if (!OS) { | |||
797 | OSFile = OutFile; | |||
798 | OS.reset(new llvm::raw_fd_ostream( | |||
799 | OSFile, Error, | |||
800 | (Binary ? llvm::sys::fs::F_None : llvm::sys::fs::F_Text))); | |||
801 | if (Error) | |||
802 | return nullptr; | |||
803 | } | |||
804 | ||||
805 | // Make sure the out stream file gets removed if we crash. | |||
806 | if (RemoveFileOnSignal) | |||
807 | llvm::sys::RemoveFileOnSignal(OSFile); | |||
808 | ||||
809 | if (ResultPathName) | |||
810 | *ResultPathName = OutFile; | |||
811 | if (TempPathName) | |||
812 | *TempPathName = TempFile; | |||
813 | ||||
814 | if (!Binary || OS->supportsSeeking()) | |||
815 | return std::move(OS); | |||
816 | ||||
817 | auto B = llvm::make_unique<llvm::buffer_ostream>(*OS); | |||
818 | assert(!NonSeekStream)(static_cast <bool> (!NonSeekStream) ? void (0) : __assert_fail ("!NonSeekStream", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 818, __extension__ __PRETTY_FUNCTION__)); | |||
819 | NonSeekStream = std::move(OS); | |||
820 | return std::move(B); | |||
821 | } | |||
822 | ||||
823 | // Initialization Utilities | |||
824 | ||||
825 | bool CompilerInstance::InitializeSourceManager(const FrontendInputFile &Input){ | |||
826 | return InitializeSourceManager( | |||
827 | Input, getDiagnostics(), getFileManager(), getSourceManager(), | |||
828 | hasPreprocessor() ? &getPreprocessor().getHeaderSearchInfo() : nullptr, | |||
| ||||
829 | getDependencyOutputOpts(), getFrontendOpts()); | |||
830 | } | |||
831 | ||||
832 | // static | |||
833 | bool CompilerInstance::InitializeSourceManager( | |||
834 | const FrontendInputFile &Input, DiagnosticsEngine &Diags, | |||
835 | FileManager &FileMgr, SourceManager &SourceMgr, HeaderSearch *HS, | |||
836 | DependencyOutputOptions &DepOpts, const FrontendOptions &Opts) { | |||
837 | SrcMgr::CharacteristicKind Kind = | |||
838 | Input.getKind().getFormat() == InputKind::ModuleMap | |||
839 | ? Input.isSystem() ? SrcMgr::C_System_ModuleMap | |||
840 | : SrcMgr::C_User_ModuleMap | |||
841 | : Input.isSystem() ? SrcMgr::C_System : SrcMgr::C_User; | |||
842 | ||||
843 | if (Input.isBuffer()) { | |||
844 | SourceMgr.setMainFileID(SourceMgr.createFileID(SourceManager::Unowned, | |||
845 | Input.getBuffer(), Kind)); | |||
846 | assert(SourceMgr.getMainFileID().isValid() &&(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 847, __extension__ __PRETTY_FUNCTION__)) | |||
847 | "Couldn't establish MainFileID!")(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 847, __extension__ __PRETTY_FUNCTION__)); | |||
848 | return true; | |||
849 | } | |||
850 | ||||
851 | StringRef InputFile = Input.getFile(); | |||
852 | ||||
853 | // Figure out where to get and map in the main file. | |||
854 | if (InputFile != "-") { | |||
855 | const FileEntry *File; | |||
856 | if (Opts.FindPchSource.empty()) { | |||
857 | File = FileMgr.getFile(InputFile, /*OpenFile=*/true); | |||
858 | } else { | |||
859 | // When building a pch file in clang-cl mode, the .h file is built as if | |||
860 | // it was included by a cc file. Since the driver doesn't know about | |||
861 | // all include search directories, the frontend must search the input | |||
862 | // file through HeaderSearch here, as if it had been included by the | |||
863 | // cc file at Opts.FindPchSource. | |||
864 | const FileEntry *FindFile = FileMgr.getFile(Opts.FindPchSource); | |||
865 | if (!FindFile) { | |||
866 | Diags.Report(diag::err_fe_error_reading) << Opts.FindPchSource; | |||
867 | return false; | |||
868 | } | |||
869 | const DirectoryLookup *UnusedCurDir; | |||
870 | SmallVector<std::pair<const FileEntry *, const DirectoryEntry *>, 16> | |||
871 | Includers; | |||
872 | Includers.push_back(std::make_pair(FindFile, FindFile->getDir())); | |||
873 | File = HS->LookupFile(InputFile, SourceLocation(), /*isAngled=*/false, | |||
| ||||
874 | /*FromDir=*/nullptr, | |||
875 | /*CurDir=*/UnusedCurDir, Includers, | |||
876 | /*SearchPath=*/nullptr, | |||
877 | /*RelativePath=*/nullptr, | |||
878 | /*RequestingModule=*/nullptr, | |||
879 | /*SuggestedModule=*/nullptr, /*IsMapped=*/nullptr, | |||
880 | /*SkipCache=*/true); | |||
881 | // Also add the header to /showIncludes output. | |||
882 | if (File) | |||
883 | DepOpts.ShowIncludesPretendHeader = File->getName(); | |||
884 | } | |||
885 | if (!File) { | |||
886 | Diags.Report(diag::err_fe_error_reading) << InputFile; | |||
887 | return false; | |||
888 | } | |||
889 | ||||
890 | // The natural SourceManager infrastructure can't currently handle named | |||
891 | // pipes, but we would at least like to accept them for the main | |||
892 | // file. Detect them here, read them with the volatile flag so FileMgr will | |||
893 | // pick up the correct size, and simply override their contents as we do for | |||
894 | // STDIN. | |||
895 | if (File->isNamedPipe()) { | |||
896 | auto MB = FileMgr.getBufferForFile(File, /*isVolatile=*/true); | |||
897 | if (MB) { | |||
898 | // Create a new virtual file that will have the correct size. | |||
899 | File = FileMgr.getVirtualFile(InputFile, (*MB)->getBufferSize(), 0); | |||
900 | SourceMgr.overrideFileContents(File, std::move(*MB)); | |||
901 | } else { | |||
902 | Diags.Report(diag::err_cannot_open_file) << InputFile | |||
903 | << MB.getError().message(); | |||
904 | return false; | |||
905 | } | |||
906 | } | |||
907 | ||||
908 | SourceMgr.setMainFileID( | |||
909 | SourceMgr.createFileID(File, SourceLocation(), Kind)); | |||
910 | } else { | |||
911 | llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> SBOrErr = | |||
912 | llvm::MemoryBuffer::getSTDIN(); | |||
913 | if (std::error_code EC = SBOrErr.getError()) { | |||
914 | Diags.Report(diag::err_fe_error_reading_stdin) << EC.message(); | |||
915 | return false; | |||
916 | } | |||
917 | std::unique_ptr<llvm::MemoryBuffer> SB = std::move(SBOrErr.get()); | |||
918 | ||||
919 | const FileEntry *File = FileMgr.getVirtualFile(SB->getBufferIdentifier(), | |||
920 | SB->getBufferSize(), 0); | |||
921 | SourceMgr.setMainFileID( | |||
922 | SourceMgr.createFileID(File, SourceLocation(), Kind)); | |||
923 | SourceMgr.overrideFileContents(File, std::move(SB)); | |||
924 | } | |||
925 | ||||
926 | assert(SourceMgr.getMainFileID().isValid() &&(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 927, __extension__ __PRETTY_FUNCTION__)) | |||
927 | "Couldn't establish MainFileID!")(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 927, __extension__ __PRETTY_FUNCTION__)); | |||
928 | return true; | |||
929 | } | |||
930 | ||||
931 | // High-Level Operations | |||
932 | ||||
933 | bool CompilerInstance::ExecuteAction(FrontendAction &Act) { | |||
934 | assert(hasDiagnostics() && "Diagnostics engine is not initialized!")(static_cast <bool> (hasDiagnostics() && "Diagnostics engine is not initialized!" ) ? void (0) : __assert_fail ("hasDiagnostics() && \"Diagnostics engine is not initialized!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 934, __extension__ __PRETTY_FUNCTION__)); | |||
935 | assert(!getFrontendOpts().ShowHelp && "Client must handle '-help'!")(static_cast <bool> (!getFrontendOpts().ShowHelp && "Client must handle '-help'!") ? void (0) : __assert_fail ("!getFrontendOpts().ShowHelp && \"Client must handle '-help'!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 935, __extension__ __PRETTY_FUNCTION__)); | |||
936 | assert(!getFrontendOpts().ShowVersion && "Client must handle '-version'!")(static_cast <bool> (!getFrontendOpts().ShowVersion && "Client must handle '-version'!") ? void (0) : __assert_fail ("!getFrontendOpts().ShowVersion && \"Client must handle '-version'!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 936, __extension__ __PRETTY_FUNCTION__)); | |||
937 | ||||
938 | // FIXME: Take this as an argument, once all the APIs we used have moved to | |||
939 | // taking it as an input instead of hard-coding llvm::errs. | |||
940 | raw_ostream &OS = llvm::errs(); | |||
941 | ||||
942 | // Create the target instance. | |||
943 | setTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), | |||
944 | getInvocation().TargetOpts)); | |||
945 | if (!hasTarget()) | |||
946 | return false; | |||
947 | ||||
948 | // Create TargetInfo for the other side of CUDA and OpenMP compilation. | |||
949 | if ((getLangOpts().CUDA || getLangOpts().OpenMPIsDevice) && | |||
950 | !getFrontendOpts().AuxTriple.empty()) { | |||
951 | auto TO = std::make_shared<TargetOptions>(); | |||
952 | TO->Triple = getFrontendOpts().AuxTriple; | |||
953 | TO->HostTriple = getTarget().getTriple().str(); | |||
954 | setAuxTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), TO)); | |||
955 | } | |||
956 | ||||
957 | // Inform the target of the language options. | |||
958 | // | |||
959 | // FIXME: We shouldn't need to do this, the target should be immutable once | |||
960 | // created. This complexity should be lifted elsewhere. | |||
961 | getTarget().adjust(getLangOpts()); | |||
962 | ||||
963 | // Adjust target options based on codegen options. | |||
964 | getTarget().adjustTargetOptions(getCodeGenOpts(), getTargetOpts()); | |||
965 | ||||
966 | // rewriter project will change target built-in bool type from its default. | |||
967 | if (getFrontendOpts().ProgramAction == frontend::RewriteObjC) | |||
968 | getTarget().noSignedCharForObjCBool(); | |||
969 | ||||
970 | // Validate/process some options. | |||
971 | if (getHeaderSearchOpts().Verbose) | |||
972 | OS << "clang -cc1 version " CLANG_VERSION_STRING"7.0.0" | |||
973 | << " based upon " << BACKEND_PACKAGE_STRING"LLVM 7.0.0" | |||
974 | << " default target " << llvm::sys::getDefaultTargetTriple() << "\n"; | |||
975 | ||||
976 | if (getFrontendOpts().ShowTimers) | |||
977 | createFrontendTimer(); | |||
978 | ||||
979 | if (getFrontendOpts().ShowStats || !getFrontendOpts().StatsFile.empty()) | |||
980 | llvm::EnableStatistics(false); | |||
981 | ||||
982 | for (const FrontendInputFile &FIF : getFrontendOpts().Inputs) { | |||
983 | // Reset the ID tables if we are reusing the SourceManager and parsing | |||
984 | // regular files. | |||
985 | if (hasSourceManager() && !Act.isModelParsingAction()) | |||
986 | getSourceManager().clearIDTables(); | |||
987 | ||||
988 | if (Act.BeginSourceFile(*this, FIF)) { | |||
989 | Act.Execute(); | |||
990 | Act.EndSourceFile(); | |||
991 | } | |||
992 | } | |||
993 | ||||
994 | // Notify the diagnostic client that all files were processed. | |||
995 | getDiagnostics().getClient()->finish(); | |||
996 | ||||
997 | if (getDiagnosticOpts().ShowCarets) { | |||
998 | // We can have multiple diagnostics sharing one diagnostic client. | |||
999 | // Get the total number of warnings/errors from the client. | |||
1000 | unsigned NumWarnings = getDiagnostics().getClient()->getNumWarnings(); | |||
1001 | unsigned NumErrors = getDiagnostics().getClient()->getNumErrors(); | |||
1002 | ||||
1003 | if (NumWarnings) | |||
1004 | OS << NumWarnings << " warning" << (NumWarnings == 1 ? "" : "s"); | |||
1005 | if (NumWarnings && NumErrors) | |||
1006 | OS << " and "; | |||
1007 | if (NumErrors) | |||
1008 | OS << NumErrors << " error" << (NumErrors == 1 ? "" : "s"); | |||
1009 | if (NumWarnings || NumErrors) { | |||
1010 | OS << " generated"; | |||
1011 | if (getLangOpts().CUDA) { | |||
1012 | if (!getLangOpts().CUDAIsDevice) { | |||
1013 | OS << " when compiling for host"; | |||
1014 | } else { | |||
1015 | OS << " when compiling for " << getTargetOpts().CPU; | |||
1016 | } | |||
1017 | } | |||
1018 | OS << ".\n"; | |||
1019 | } | |||
1020 | } | |||
1021 | ||||
1022 | if (getFrontendOpts().ShowStats) { | |||
1023 | if (hasFileManager()) { | |||
1024 | getFileManager().PrintStats(); | |||
1025 | OS << '\n'; | |||
1026 | } | |||
1027 | llvm::PrintStatistics(OS); | |||
1028 | } | |||
1029 | StringRef StatsFile = getFrontendOpts().StatsFile; | |||
1030 | if (!StatsFile.empty()) { | |||
1031 | std::error_code EC; | |||
1032 | auto StatS = llvm::make_unique<llvm::raw_fd_ostream>(StatsFile, EC, | |||
1033 | llvm::sys::fs::F_Text); | |||
1034 | if (EC) { | |||
1035 | getDiagnostics().Report(diag::warn_fe_unable_to_open_stats_file) | |||
1036 | << StatsFile << EC.message(); | |||
1037 | } else { | |||
1038 | llvm::PrintStatisticsJSON(*StatS); | |||
1039 | } | |||
1040 | } | |||
1041 | ||||
1042 | return !getDiagnostics().getClient()->getNumErrors(); | |||
1043 | } | |||
1044 | ||||
1045 | /// \brief Determine the appropriate source input kind based on language | |||
1046 | /// options. | |||
1047 | static InputKind::Language getLanguageFromOptions(const LangOptions &LangOpts) { | |||
1048 | if (LangOpts.OpenCL) | |||
1049 | return InputKind::OpenCL; | |||
1050 | if (LangOpts.CUDA) | |||
1051 | return InputKind::CUDA; | |||
1052 | if (LangOpts.ObjC1) | |||
1053 | return LangOpts.CPlusPlus ? InputKind::ObjCXX : InputKind::ObjC; | |||
1054 | return LangOpts.CPlusPlus ? InputKind::CXX : InputKind::C; | |||
1055 | } | |||
1056 | ||||
1057 | /// \brief Compile a module file for the given module, using the options | |||
1058 | /// provided by the importing compiler instance. Returns true if the module | |||
1059 | /// was built without errors. | |||
1060 | static bool | |||
1061 | compileModuleImpl(CompilerInstance &ImportingInstance, SourceLocation ImportLoc, | |||
1062 | StringRef ModuleName, FrontendInputFile Input, | |||
1063 | StringRef OriginalModuleMapFile, StringRef ModuleFileName, | |||
1064 | llvm::function_ref<void(CompilerInstance &)> PreBuildStep = | |||
1065 | [](CompilerInstance &) {}, | |||
1066 | llvm::function_ref<void(CompilerInstance &)> PostBuildStep = | |||
1067 | [](CompilerInstance &) {}) { | |||
1068 | // Construct a compiler invocation for creating this module. | |||
1069 | auto Invocation = | |||
1070 | std::make_shared<CompilerInvocation>(ImportingInstance.getInvocation()); | |||
1071 | ||||
1072 | PreprocessorOptions &PPOpts = Invocation->getPreprocessorOpts(); | |||
1073 | ||||
1074 | // For any options that aren't intended to affect how a module is built, | |||
1075 | // reset them to their default values. | |||
1076 | Invocation->getLangOpts()->resetNonModularOptions(); | |||
1077 | PPOpts.resetNonModularOptions(); | |||
1078 | ||||
1079 | // Remove any macro definitions that are explicitly ignored by the module. | |||
1080 | // They aren't supposed to affect how the module is built anyway. | |||
1081 | HeaderSearchOptions &HSOpts = Invocation->getHeaderSearchOpts(); | |||
1082 | PPOpts.Macros.erase( | |||
1083 | std::remove_if(PPOpts.Macros.begin(), PPOpts.Macros.end(), | |||
1084 | [&HSOpts](const std::pair<std::string, bool> &def) { | |||
1085 | StringRef MacroDef = def.first; | |||
1086 | return HSOpts.ModulesIgnoreMacros.count( | |||
1087 | llvm::CachedHashString(MacroDef.split('=').first)) > 0; | |||
1088 | }), | |||
1089 | PPOpts.Macros.end()); | |||
1090 | ||||
1091 | // If the original compiler invocation had -fmodule-name, pass it through. | |||
1092 | Invocation->getLangOpts()->ModuleName = | |||
1093 | ImportingInstance.getInvocation().getLangOpts()->ModuleName; | |||
1094 | ||||
1095 | // Note the name of the module we're building. | |||
1096 | Invocation->getLangOpts()->CurrentModule = ModuleName; | |||
1097 | ||||
1098 | // Make sure that the failed-module structure has been allocated in | |||
1099 | // the importing instance, and propagate the pointer to the newly-created | |||
1100 | // instance. | |||
1101 | PreprocessorOptions &ImportingPPOpts | |||
1102 | = ImportingInstance.getInvocation().getPreprocessorOpts(); | |||
1103 | if (!ImportingPPOpts.FailedModules) | |||
1104 | ImportingPPOpts.FailedModules = | |||
1105 | std::make_shared<PreprocessorOptions::FailedModulesSet>(); | |||
1106 | PPOpts.FailedModules = ImportingPPOpts.FailedModules; | |||
1107 | ||||
1108 | // If there is a module map file, build the module using the module map. | |||
1109 | // Set up the inputs/outputs so that we build the module from its umbrella | |||
1110 | // header. | |||
1111 | FrontendOptions &FrontendOpts = Invocation->getFrontendOpts(); | |||
1112 | FrontendOpts.OutputFile = ModuleFileName.str(); | |||
1113 | FrontendOpts.DisableFree = false; | |||
1114 | FrontendOpts.GenerateGlobalModuleIndex = false; | |||
1115 | FrontendOpts.BuildingImplicitModule = true; | |||
1116 | FrontendOpts.OriginalModuleMap = OriginalModuleMapFile; | |||
1117 | // Force implicitly-built modules to hash the content of the module file. | |||
1118 | HSOpts.ModulesHashContent = true; | |||
1119 | FrontendOpts.Inputs = {Input}; | |||
1120 | ||||
1121 | // Don't free the remapped file buffers; they are owned by our caller. | |||
1122 | PPOpts.RetainRemappedFileBuffers = true; | |||
1123 | ||||
1124 | Invocation->getDiagnosticOpts().VerifyDiagnostics = 0; | |||
1125 | assert(ImportingInstance.getInvocation().getModuleHash() ==(static_cast <bool> (ImportingInstance.getInvocation(). getModuleHash() == Invocation->getModuleHash() && "Module hash mismatch!" ) ? void (0) : __assert_fail ("ImportingInstance.getInvocation().getModuleHash() == Invocation->getModuleHash() && \"Module hash mismatch!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1126, __extension__ __PRETTY_FUNCTION__)) | |||
1126 | Invocation->getModuleHash() && "Module hash mismatch!")(static_cast <bool> (ImportingInstance.getInvocation(). getModuleHash() == Invocation->getModuleHash() && "Module hash mismatch!" ) ? void (0) : __assert_fail ("ImportingInstance.getInvocation().getModuleHash() == Invocation->getModuleHash() && \"Module hash mismatch!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1126, __extension__ __PRETTY_FUNCTION__)); | |||
1127 | ||||
1128 | // Construct a compiler instance that will be used to actually create the | |||
1129 | // module. Since we're sharing a PCMCache, | |||
1130 | // CompilerInstance::CompilerInstance is responsible for finalizing the | |||
1131 | // buffers to prevent use-after-frees. | |||
1132 | CompilerInstance Instance(ImportingInstance.getPCHContainerOperations(), | |||
1133 | &ImportingInstance.getPreprocessor().getPCMCache()); | |||
1134 | auto &Inv = *Invocation; | |||
1135 | Instance.setInvocation(std::move(Invocation)); | |||
1136 | ||||
1137 | Instance.createDiagnostics(new ForwardingDiagnosticConsumer( | |||
1138 | ImportingInstance.getDiagnosticClient()), | |||
1139 | /*ShouldOwnClient=*/true); | |||
1140 | ||||
1141 | Instance.setVirtualFileSystem(&ImportingInstance.getVirtualFileSystem()); | |||
1142 | ||||
1143 | // Note that this module is part of the module build stack, so that we | |||
1144 | // can detect cycles in the module graph. | |||
1145 | Instance.setFileManager(&ImportingInstance.getFileManager()); | |||
1146 | Instance.createSourceManager(Instance.getFileManager()); | |||
1147 | SourceManager &SourceMgr = Instance.getSourceManager(); | |||
1148 | SourceMgr.setModuleBuildStack( | |||
1149 | ImportingInstance.getSourceManager().getModuleBuildStack()); | |||
1150 | SourceMgr.pushModuleBuildStack(ModuleName, | |||
1151 | FullSourceLoc(ImportLoc, ImportingInstance.getSourceManager())); | |||
1152 | ||||
1153 | // If we're collecting module dependencies, we need to share a collector | |||
1154 | // between all of the module CompilerInstances. Other than that, we don't | |||
1155 | // want to produce any dependency output from the module build. | |||
1156 | Instance.setModuleDepCollector(ImportingInstance.getModuleDepCollector()); | |||
1157 | Inv.getDependencyOutputOpts() = DependencyOutputOptions(); | |||
1158 | ||||
1159 | ImportingInstance.getDiagnostics().Report(ImportLoc, | |||
1160 | diag::remark_module_build) | |||
1161 | << ModuleName << ModuleFileName; | |||
1162 | ||||
1163 | PreBuildStep(Instance); | |||
1164 | ||||
1165 | // Execute the action to actually build the module in-place. Use a separate | |||
1166 | // thread so that we get a stack large enough. | |||
1167 | const unsigned ThreadStackSize = 8 << 20; | |||
1168 | llvm::CrashRecoveryContext CRC; | |||
1169 | CRC.RunSafelyOnThread( | |||
1170 | [&]() { | |||
1171 | GenerateModuleFromModuleMapAction Action; | |||
1172 | Instance.ExecuteAction(Action); | |||
1173 | }, | |||
1174 | ThreadStackSize); | |||
1175 | ||||
1176 | PostBuildStep(Instance); | |||
1177 | ||||
1178 | ImportingInstance.getDiagnostics().Report(ImportLoc, | |||
1179 | diag::remark_module_build_done) | |||
1180 | << ModuleName; | |||
1181 | ||||
1182 | // Delete the temporary module map file. | |||
1183 | // FIXME: Even though we're executing under crash protection, it would still | |||
1184 | // be nice to do this with RemoveFileOnSignal when we can. However, that | |||
1185 | // doesn't make sense for all clients, so clean this up manually. | |||
1186 | Instance.clearOutputFiles(/*EraseFiles=*/true); | |||
1187 | ||||
1188 | return !Instance.getDiagnostics().hasErrorOccurred(); | |||
1189 | } | |||
1190 | ||||
1191 | /// \brief Compile a module file for the given module, using the options | |||
1192 | /// provided by the importing compiler instance. Returns true if the module | |||
1193 | /// was built without errors. | |||
1194 | static bool compileModuleImpl(CompilerInstance &ImportingInstance, | |||
1195 | SourceLocation ImportLoc, | |||
1196 | Module *Module, | |||
1197 | StringRef ModuleFileName) { | |||
1198 | InputKind IK(getLanguageFromOptions(ImportingInstance.getLangOpts()), | |||
1199 | InputKind::ModuleMap); | |||
1200 | ||||
1201 | // Get or create the module map that we'll use to build this module. | |||
1202 | ModuleMap &ModMap | |||
1203 | = ImportingInstance.getPreprocessor().getHeaderSearchInfo().getModuleMap(); | |||
1204 | bool Result; | |||
1205 | if (const FileEntry *ModuleMapFile = | |||
1206 | ModMap.getContainingModuleMapFile(Module)) { | |||
1207 | // Use the module map where this module resides. | |||
1208 | Result = compileModuleImpl( | |||
1209 | ImportingInstance, ImportLoc, Module->getTopLevelModuleName(), | |||
1210 | FrontendInputFile(ModuleMapFile->getName(), IK, +Module->IsSystem), | |||
1211 | ModMap.getModuleMapFileForUniquing(Module)->getName(), | |||
1212 | ModuleFileName); | |||
1213 | } else { | |||
1214 | // FIXME: We only need to fake up an input file here as a way of | |||
1215 | // transporting the module's directory to the module map parser. We should | |||
1216 | // be able to do that more directly, and parse from a memory buffer without | |||
1217 | // inventing this file. | |||
1218 | SmallString<128> FakeModuleMapFile(Module->Directory->getName()); | |||
1219 | llvm::sys::path::append(FakeModuleMapFile, "__inferred_module.map"); | |||
1220 | ||||
1221 | std::string InferredModuleMapContent; | |||
1222 | llvm::raw_string_ostream OS(InferredModuleMapContent); | |||
1223 | Module->print(OS); | |||
1224 | OS.flush(); | |||
1225 | ||||
1226 | Result = compileModuleImpl( | |||
1227 | ImportingInstance, ImportLoc, Module->getTopLevelModuleName(), | |||
1228 | FrontendInputFile(FakeModuleMapFile, IK, +Module->IsSystem), | |||
1229 | ModMap.getModuleMapFileForUniquing(Module)->getName(), | |||
1230 | ModuleFileName, | |||
1231 | [&](CompilerInstance &Instance) { | |||
1232 | std::unique_ptr<llvm::MemoryBuffer> ModuleMapBuffer = | |||
1233 | llvm::MemoryBuffer::getMemBuffer(InferredModuleMapContent); | |||
1234 | ModuleMapFile = Instance.getFileManager().getVirtualFile( | |||
1235 | FakeModuleMapFile, InferredModuleMapContent.size(), 0); | |||
1236 | Instance.getSourceManager().overrideFileContents( | |||
1237 | ModuleMapFile, std::move(ModuleMapBuffer)); | |||
1238 | }); | |||
1239 | } | |||
1240 | ||||
1241 | // We've rebuilt a module. If we're allowed to generate or update the global | |||
1242 | // module index, record that fact in the importing compiler instance. | |||
1243 | if (ImportingInstance.getFrontendOpts().GenerateGlobalModuleIndex) { | |||
1244 | ImportingInstance.setBuildGlobalModuleIndex(true); | |||
1245 | } | |||
1246 | ||||
1247 | return Result; | |||
1248 | } | |||
1249 | ||||
1250 | static bool compileAndLoadModule(CompilerInstance &ImportingInstance, | |||
1251 | SourceLocation ImportLoc, | |||
1252 | SourceLocation ModuleNameLoc, Module *Module, | |||
1253 | StringRef ModuleFileName) { | |||
1254 | DiagnosticsEngine &Diags = ImportingInstance.getDiagnostics(); | |||
1255 | ||||
1256 | auto diagnoseBuildFailure = [&] { | |||
1257 | Diags.Report(ModuleNameLoc, diag::err_module_not_built) | |||
1258 | << Module->Name << SourceRange(ImportLoc, ModuleNameLoc); | |||
1259 | }; | |||
1260 | ||||
1261 | // FIXME: have LockFileManager return an error_code so that we can | |||
1262 | // avoid the mkdir when the directory already exists. | |||
1263 | StringRef Dir = llvm::sys::path::parent_path(ModuleFileName); | |||
1264 | llvm::sys::fs::create_directories(Dir); | |||
1265 | ||||
1266 | while (1) { | |||
1267 | unsigned ModuleLoadCapabilities = ASTReader::ARR_Missing; | |||
1268 | llvm::LockFileManager Locked(ModuleFileName); | |||
1269 | switch (Locked) { | |||
1270 | case llvm::LockFileManager::LFS_Error: | |||
1271 | // PCMCache takes care of correctness and locks are only necessary for | |||
1272 | // performance. Fallback to building the module in case of any lock | |||
1273 | // related errors. | |||
1274 | Diags.Report(ModuleNameLoc, diag::remark_module_lock_failure) | |||
1275 | << Module->Name << Locked.getErrorMessage(); | |||
1276 | // Clear out any potential leftover. | |||
1277 | Locked.unsafeRemoveLockFile(); | |||
1278 | // FALLTHROUGH | |||
1279 | case llvm::LockFileManager::LFS_Owned: | |||
1280 | // We're responsible for building the module ourselves. | |||
1281 | if (!compileModuleImpl(ImportingInstance, ModuleNameLoc, Module, | |||
1282 | ModuleFileName)) { | |||
1283 | diagnoseBuildFailure(); | |||
1284 | return false; | |||
1285 | } | |||
1286 | break; | |||
1287 | ||||
1288 | case llvm::LockFileManager::LFS_Shared: | |||
1289 | // Someone else is responsible for building the module. Wait for them to | |||
1290 | // finish. | |||
1291 | switch (Locked.waitForUnlock()) { | |||
1292 | case llvm::LockFileManager::Res_Success: | |||
1293 | ModuleLoadCapabilities |= ASTReader::ARR_OutOfDate; | |||
1294 | break; | |||
1295 | case llvm::LockFileManager::Res_OwnerDied: | |||
1296 | continue; // try again to get the lock. | |||
1297 | case llvm::LockFileManager::Res_Timeout: | |||
1298 | // Since PCMCache takes care of correctness, we try waiting for another | |||
1299 | // process to complete the build so clang does not do it done twice. If | |||
1300 | // case of timeout, build it ourselves. | |||
1301 | Diags.Report(ModuleNameLoc, diag::remark_module_lock_timeout) | |||
1302 | << Module->Name; | |||
1303 | // Clear the lock file so that future invocations can make progress. | |||
1304 | Locked.unsafeRemoveLockFile(); | |||
1305 | continue; | |||
1306 | } | |||
1307 | break; | |||
1308 | } | |||
1309 | ||||
1310 | // Try to read the module file, now that we've compiled it. | |||
1311 | ASTReader::ASTReadResult ReadResult = | |||
1312 | ImportingInstance.getModuleManager()->ReadAST( | |||
1313 | ModuleFileName, serialization::MK_ImplicitModule, ImportLoc, | |||
1314 | ModuleLoadCapabilities); | |||
1315 | ||||
1316 | if (ReadResult == ASTReader::OutOfDate && | |||
1317 | Locked == llvm::LockFileManager::LFS_Shared) { | |||
1318 | // The module may be out of date in the presence of file system races, | |||
1319 | // or if one of its imports depends on header search paths that are not | |||
1320 | // consistent with this ImportingInstance. Try again... | |||
1321 | continue; | |||
1322 | } else if (ReadResult == ASTReader::Missing) { | |||
1323 | diagnoseBuildFailure(); | |||
1324 | } else if (ReadResult != ASTReader::Success && | |||
1325 | !Diags.hasErrorOccurred()) { | |||
1326 | // The ASTReader didn't diagnose the error, so conservatively report it. | |||
1327 | diagnoseBuildFailure(); | |||
1328 | } | |||
1329 | return ReadResult == ASTReader::Success; | |||
1330 | } | |||
1331 | } | |||
1332 | ||||
1333 | /// \brief Diagnose differences between the current definition of the given | |||
1334 | /// configuration macro and the definition provided on the command line. | |||
1335 | static void checkConfigMacro(Preprocessor &PP, StringRef ConfigMacro, | |||
1336 | Module *Mod, SourceLocation ImportLoc) { | |||
1337 | IdentifierInfo *Id = PP.getIdentifierInfo(ConfigMacro); | |||
1338 | SourceManager &SourceMgr = PP.getSourceManager(); | |||
1339 | ||||
1340 | // If this identifier has never had a macro definition, then it could | |||
1341 | // not have changed. | |||
1342 | if (!Id->hadMacroDefinition()) | |||
1343 | return; | |||
1344 | auto *LatestLocalMD = PP.getLocalMacroDirectiveHistory(Id); | |||
1345 | ||||
1346 | // Find the macro definition from the command line. | |||
1347 | MacroInfo *CmdLineDefinition = nullptr; | |||
1348 | for (auto *MD = LatestLocalMD; MD; MD = MD->getPrevious()) { | |||
1349 | // We only care about the predefines buffer. | |||
1350 | FileID FID = SourceMgr.getFileID(MD->getLocation()); | |||
1351 | if (FID.isInvalid() || FID != PP.getPredefinesFileID()) | |||
1352 | continue; | |||
1353 | if (auto *DMD = dyn_cast<DefMacroDirective>(MD)) | |||
1354 | CmdLineDefinition = DMD->getMacroInfo(); | |||
1355 | break; | |||
1356 | } | |||
1357 | ||||
1358 | auto *CurrentDefinition = PP.getMacroInfo(Id); | |||
1359 | if (CurrentDefinition == CmdLineDefinition) { | |||
1360 | // Macro matches. Nothing to do. | |||
1361 | } else if (!CurrentDefinition) { | |||
1362 | // This macro was defined on the command line, then #undef'd later. | |||
1363 | // Complain. | |||
1364 | PP.Diag(ImportLoc, diag::warn_module_config_macro_undef) | |||
1365 | << true << ConfigMacro << Mod->getFullModuleName(); | |||
1366 | auto LatestDef = LatestLocalMD->getDefinition(); | |||
1367 | assert(LatestDef.isUndefined() &&(static_cast <bool> (LatestDef.isUndefined() && "predefined macro went away with no #undef?") ? void (0) : __assert_fail ("LatestDef.isUndefined() && \"predefined macro went away with no #undef?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1368, __extension__ __PRETTY_FUNCTION__)) | |||
1368 | "predefined macro went away with no #undef?")(static_cast <bool> (LatestDef.isUndefined() && "predefined macro went away with no #undef?") ? void (0) : __assert_fail ("LatestDef.isUndefined() && \"predefined macro went away with no #undef?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1368, __extension__ __PRETTY_FUNCTION__)); | |||
1369 | PP.Diag(LatestDef.getUndefLocation(), diag::note_module_def_undef_here) | |||
1370 | << true; | |||
1371 | return; | |||
1372 | } else if (!CmdLineDefinition) { | |||
1373 | // There was no definition for this macro in the predefines buffer, | |||
1374 | // but there was a local definition. Complain. | |||
1375 | PP.Diag(ImportLoc, diag::warn_module_config_macro_undef) | |||
1376 | << false << ConfigMacro << Mod->getFullModuleName(); | |||
1377 | PP.Diag(CurrentDefinition->getDefinitionLoc(), | |||
1378 | diag::note_module_def_undef_here) | |||
1379 | << false; | |||
1380 | } else if (!CurrentDefinition->isIdenticalTo(*CmdLineDefinition, PP, | |||
1381 | /*Syntactically=*/true)) { | |||
1382 | // The macro definitions differ. | |||
1383 | PP.Diag(ImportLoc, diag::warn_module_config_macro_undef) | |||
1384 | << false << ConfigMacro << Mod->getFullModuleName(); | |||
1385 | PP.Diag(CurrentDefinition->getDefinitionLoc(), | |||
1386 | diag::note_module_def_undef_here) | |||
1387 | << false; | |||
1388 | } | |||
1389 | } | |||
1390 | ||||
1391 | /// \brief Write a new timestamp file with the given path. | |||
1392 | static void writeTimestampFile(StringRef TimestampFile) { | |||
1393 | std::error_code EC; | |||
1394 | llvm::raw_fd_ostream Out(TimestampFile.str(), EC, llvm::sys::fs::F_None); | |||
1395 | } | |||
1396 | ||||
1397 | /// \brief Prune the module cache of modules that haven't been accessed in | |||
1398 | /// a long time. | |||
1399 | static void pruneModuleCache(const HeaderSearchOptions &HSOpts) { | |||
1400 | struct stat StatBuf; | |||
1401 | llvm::SmallString<128> TimestampFile; | |||
1402 | TimestampFile = HSOpts.ModuleCachePath; | |||
1403 | assert(!TimestampFile.empty())(static_cast <bool> (!TimestampFile.empty()) ? void (0) : __assert_fail ("!TimestampFile.empty()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1403, __extension__ __PRETTY_FUNCTION__)); | |||
1404 | llvm::sys::path::append(TimestampFile, "modules.timestamp"); | |||
1405 | ||||
1406 | // Try to stat() the timestamp file. | |||
1407 | if (::stat(TimestampFile.c_str(), &StatBuf)) { | |||
1408 | // If the timestamp file wasn't there, create one now. | |||
1409 | if (errno(*__errno_location ()) == ENOENT2) { | |||
1410 | writeTimestampFile(TimestampFile); | |||
1411 | } | |||
1412 | return; | |||
1413 | } | |||
1414 | ||||
1415 | // Check whether the time stamp is older than our pruning interval. | |||
1416 | // If not, do nothing. | |||
1417 | time_t TimeStampModTime = StatBuf.st_mtimest_mtim.tv_sec; | |||
1418 | time_t CurrentTime = time(nullptr); | |||
1419 | if (CurrentTime - TimeStampModTime <= time_t(HSOpts.ModuleCachePruneInterval)) | |||
1420 | return; | |||
1421 | ||||
1422 | // Write a new timestamp file so that nobody else attempts to prune. | |||
1423 | // There is a benign race condition here, if two Clang instances happen to | |||
1424 | // notice at the same time that the timestamp is out-of-date. | |||
1425 | writeTimestampFile(TimestampFile); | |||
1426 | ||||
1427 | // Walk the entire module cache, looking for unused module files and module | |||
1428 | // indices. | |||
1429 | std::error_code EC; | |||
1430 | SmallString<128> ModuleCachePathNative; | |||
1431 | llvm::sys::path::native(HSOpts.ModuleCachePath, ModuleCachePathNative); | |||
1432 | for (llvm::sys::fs::directory_iterator Dir(ModuleCachePathNative, EC), DirEnd; | |||
1433 | Dir != DirEnd && !EC; Dir.increment(EC)) { | |||
1434 | // If we don't have a directory, there's nothing to look into. | |||
1435 | if (!llvm::sys::fs::is_directory(Dir->path())) | |||
1436 | continue; | |||
1437 | ||||
1438 | // Walk all of the files within this directory. | |||
1439 | for (llvm::sys::fs::directory_iterator File(Dir->path(), EC), FileEnd; | |||
1440 | File != FileEnd && !EC; File.increment(EC)) { | |||
1441 | // We only care about module and global module index files. | |||
1442 | StringRef Extension = llvm::sys::path::extension(File->path()); | |||
1443 | if (Extension != ".pcm" && Extension != ".timestamp" && | |||
1444 | llvm::sys::path::filename(File->path()) != "modules.idx") | |||
1445 | continue; | |||
1446 | ||||
1447 | // Look at this file. If we can't stat it, there's nothing interesting | |||
1448 | // there. | |||
1449 | if (::stat(File->path().c_str(), &StatBuf)) | |||
1450 | continue; | |||
1451 | ||||
1452 | // If the file has been used recently enough, leave it there. | |||
1453 | time_t FileAccessTime = StatBuf.st_atimest_atim.tv_sec; | |||
1454 | if (CurrentTime - FileAccessTime <= | |||
1455 | time_t(HSOpts.ModuleCachePruneAfter)) { | |||
1456 | continue; | |||
1457 | } | |||
1458 | ||||
1459 | // Remove the file. | |||
1460 | llvm::sys::fs::remove(File->path()); | |||
1461 | ||||
1462 | // Remove the timestamp file. | |||
1463 | std::string TimpestampFilename = File->path() + ".timestamp"; | |||
1464 | llvm::sys::fs::remove(TimpestampFilename); | |||
1465 | } | |||
1466 | ||||
1467 | // If we removed all of the files in the directory, remove the directory | |||
1468 | // itself. | |||
1469 | if (llvm::sys::fs::directory_iterator(Dir->path(), EC) == | |||
1470 | llvm::sys::fs::directory_iterator() && !EC) | |||
1471 | llvm::sys::fs::remove(Dir->path()); | |||
1472 | } | |||
1473 | } | |||
1474 | ||||
1475 | void CompilerInstance::createModuleManager() { | |||
1476 | if (!ModuleManager) { | |||
1477 | if (!hasASTContext()) | |||
1478 | createASTContext(); | |||
1479 | ||||
1480 | // If we're implicitly building modules but not currently recursively | |||
1481 | // building a module, check whether we need to prune the module cache. | |||
1482 | if (getSourceManager().getModuleBuildStack().empty() && | |||
1483 | !getPreprocessor().getHeaderSearchInfo().getModuleCachePath().empty() && | |||
1484 | getHeaderSearchOpts().ModuleCachePruneInterval > 0 && | |||
1485 | getHeaderSearchOpts().ModuleCachePruneAfter > 0) { | |||
1486 | pruneModuleCache(getHeaderSearchOpts()); | |||
1487 | } | |||
1488 | ||||
1489 | HeaderSearchOptions &HSOpts = getHeaderSearchOpts(); | |||
1490 | std::string Sysroot = HSOpts.Sysroot; | |||
1491 | const PreprocessorOptions &PPOpts = getPreprocessorOpts(); | |||
1492 | std::unique_ptr<llvm::Timer> ReadTimer; | |||
1493 | if (FrontendTimerGroup) | |||
1494 | ReadTimer = llvm::make_unique<llvm::Timer>("reading_modules", | |||
1495 | "Reading modules", | |||
1496 | *FrontendTimerGroup); | |||
1497 | ModuleManager = new ASTReader( | |||
1498 | getPreprocessor(), &getASTContext(), getPCHContainerReader(), | |||
1499 | getFrontendOpts().ModuleFileExtensions, | |||
1500 | Sysroot.empty() ? "" : Sysroot.c_str(), PPOpts.DisablePCHValidation, | |||
1501 | /*AllowASTWithCompilerErrors=*/false, | |||
1502 | /*AllowConfigurationMismatch=*/false, | |||
1503 | HSOpts.ModulesValidateSystemHeaders, | |||
1504 | getFrontendOpts().UseGlobalModuleIndex, | |||
1505 | std::move(ReadTimer)); | |||
1506 | if (hasASTConsumer()) { | |||
1507 | ModuleManager->setDeserializationListener( | |||
1508 | getASTConsumer().GetASTDeserializationListener()); | |||
1509 | getASTContext().setASTMutationListener( | |||
1510 | getASTConsumer().GetASTMutationListener()); | |||
1511 | } | |||
1512 | getASTContext().setExternalSource(ModuleManager); | |||
1513 | if (hasSema()) | |||
1514 | ModuleManager->InitializeSema(getSema()); | |||
1515 | if (hasASTConsumer()) | |||
1516 | ModuleManager->StartTranslationUnit(&getASTConsumer()); | |||
1517 | ||||
1518 | if (TheDependencyFileGenerator) | |||
1519 | TheDependencyFileGenerator->AttachToASTReader(*ModuleManager); | |||
1520 | for (auto &Listener : DependencyCollectors) | |||
1521 | Listener->attachToASTReader(*ModuleManager); | |||
1522 | } | |||
1523 | } | |||
1524 | ||||
1525 | bool CompilerInstance::loadModuleFile(StringRef FileName) { | |||
1526 | llvm::Timer Timer; | |||
1527 | if (FrontendTimerGroup) | |||
1528 | Timer.init("preloading." + FileName.str(), "Preloading " + FileName.str(), | |||
1529 | *FrontendTimerGroup); | |||
1530 | llvm::TimeRegion TimeLoading(FrontendTimerGroup ? &Timer : nullptr); | |||
1531 | ||||
1532 | // Helper to recursively read the module names for all modules we're adding. | |||
1533 | // We mark these as known and redirect any attempt to load that module to | |||
1534 | // the files we were handed. | |||
1535 | struct ReadModuleNames : ASTReaderListener { | |||
1536 | CompilerInstance &CI; | |||
1537 | llvm::SmallVector<IdentifierInfo*, 8> LoadedModules; | |||
1538 | ||||
1539 | ReadModuleNames(CompilerInstance &CI) : CI(CI) {} | |||
1540 | ||||
1541 | void ReadModuleName(StringRef ModuleName) override { | |||
1542 | LoadedModules.push_back( | |||
1543 | CI.getPreprocessor().getIdentifierInfo(ModuleName)); | |||
1544 | } | |||
1545 | ||||
1546 | void registerAll() { | |||
1547 | for (auto *II : LoadedModules) { | |||
1548 | CI.KnownModules[II] = CI.getPreprocessor() | |||
1549 | .getHeaderSearchInfo() | |||
1550 | .getModuleMap() | |||
1551 | .findModule(II->getName()); | |||
1552 | } | |||
1553 | LoadedModules.clear(); | |||
1554 | } | |||
1555 | ||||
1556 | void markAllUnavailable() { | |||
1557 | for (auto *II : LoadedModules) { | |||
1558 | if (Module *M = CI.getPreprocessor() | |||
1559 | .getHeaderSearchInfo() | |||
1560 | .getModuleMap() | |||
1561 | .findModule(II->getName())) { | |||
1562 | M->HasIncompatibleModuleFile = true; | |||
1563 | ||||
1564 | // Mark module as available if the only reason it was unavailable | |||
1565 | // was missing headers. | |||
1566 | SmallVector<Module *, 2> Stack; | |||
1567 | Stack.push_back(M); | |||
1568 | while (!Stack.empty()) { | |||
1569 | Module *Current = Stack.pop_back_val(); | |||
1570 | if (Current->IsMissingRequirement) continue; | |||
1571 | Current->IsAvailable = true; | |||
1572 | Stack.insert(Stack.end(), | |||
1573 | Current->submodule_begin(), Current->submodule_end()); | |||
1574 | } | |||
1575 | } | |||
1576 | } | |||
1577 | LoadedModules.clear(); | |||
1578 | } | |||
1579 | }; | |||
1580 | ||||
1581 | // If we don't already have an ASTReader, create one now. | |||
1582 | if (!ModuleManager) | |||
1583 | createModuleManager(); | |||
1584 | ||||
1585 | auto Listener = llvm::make_unique<ReadModuleNames>(*this); | |||
1586 | auto &ListenerRef = *Listener; | |||
1587 | ASTReader::ListenerScope ReadModuleNamesListener(*ModuleManager, | |||
1588 | std::move(Listener)); | |||
1589 | ||||
1590 | // Try to load the module file. | |||
1591 | switch (ModuleManager->ReadAST(FileName, serialization::MK_ExplicitModule, | |||
1592 | SourceLocation(), | |||
1593 | ASTReader::ARR_ConfigurationMismatch)) { | |||
1594 | case ASTReader::Success: | |||
1595 | // We successfully loaded the module file; remember the set of provided | |||
1596 | // modules so that we don't try to load implicit modules for them. | |||
1597 | ListenerRef.registerAll(); | |||
1598 | return true; | |||
1599 | ||||
1600 | case ASTReader::ConfigurationMismatch: | |||
1601 | // Ignore unusable module files. | |||
1602 | getDiagnostics().Report(SourceLocation(), diag::warn_module_config_mismatch) | |||
1603 | << FileName; | |||
1604 | // All modules provided by any files we tried and failed to load are now | |||
1605 | // unavailable; includes of those modules should now be handled textually. | |||
1606 | ListenerRef.markAllUnavailable(); | |||
1607 | return true; | |||
1608 | ||||
1609 | default: | |||
1610 | return false; | |||
1611 | } | |||
1612 | } | |||
1613 | ||||
1614 | ModuleLoadResult | |||
1615 | CompilerInstance::loadModule(SourceLocation ImportLoc, | |||
1616 | ModuleIdPath Path, | |||
1617 | Module::NameVisibilityKind Visibility, | |||
1618 | bool IsInclusionDirective) { | |||
1619 | // Determine what file we're searching from. | |||
1620 | // FIXME: Should we be deciding whether this is a submodule (here and | |||
1621 | // below) based on -fmodules-ts or should we pass a flag and make the | |||
1622 | // caller decide? | |||
1623 | std::string ModuleName; | |||
1624 | if (getLangOpts().ModulesTS) { | |||
1625 | // FIXME: Same code as Sema::ActOnModuleDecl() so there is probably a | |||
1626 | // better place/way to do this. | |||
1627 | for (auto &Piece : Path) { | |||
1628 | if (!ModuleName.empty()) | |||
1629 | ModuleName += "."; | |||
1630 | ModuleName += Piece.first->getName(); | |||
1631 | } | |||
1632 | } | |||
1633 | else | |||
1634 | ModuleName = Path[0].first->getName(); | |||
1635 | ||||
1636 | SourceLocation ModuleNameLoc = Path[0].second; | |||
1637 | ||||
1638 | // If we've already handled this import, just return the cached result. | |||
1639 | // This one-element cache is important to eliminate redundant diagnostics | |||
1640 | // when both the preprocessor and parser see the same import declaration. | |||
1641 | if (ImportLoc.isValid() && LastModuleImportLoc == ImportLoc) { | |||
1642 | // Make the named module visible. | |||
1643 | if (LastModuleImportResult && ModuleName != getLangOpts().CurrentModule) | |||
1644 | ModuleManager->makeModuleVisible(LastModuleImportResult, Visibility, | |||
1645 | ImportLoc); | |||
1646 | return LastModuleImportResult; | |||
1647 | } | |||
1648 | ||||
1649 | clang::Module *Module = nullptr; | |||
1650 | ||||
1651 | // If we don't already have information on this module, load the module now. | |||
1652 | llvm::DenseMap<const IdentifierInfo *, clang::Module *>::iterator Known | |||
1653 | = KnownModules.find(Path[0].first); | |||
1654 | if (Known != KnownModules.end()) { | |||
1655 | // Retrieve the cached top-level module. | |||
1656 | Module = Known->second; | |||
1657 | } else if (ModuleName == getLangOpts().CurrentModule) { | |||
1658 | // This is the module we're building. | |||
1659 | Module = PP->getHeaderSearchInfo().lookupModule(ModuleName); | |||
1660 | /// FIXME: perhaps we should (a) look for a module using the module name | |||
1661 | // to file map (PrebuiltModuleFiles) and (b) diagnose if still not found? | |||
1662 | //if (Module == nullptr) { | |||
1663 | // getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_found) | |||
1664 | // << ModuleName; | |||
1665 | // ModuleBuildFailed = true; | |||
1666 | // return ModuleLoadResult(); | |||
1667 | //} | |||
1668 | Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first; | |||
1669 | } else { | |||
1670 | // Search for a module with the given name. | |||
1671 | Module = PP->getHeaderSearchInfo().lookupModule(ModuleName); | |||
1672 | HeaderSearchOptions &HSOpts = | |||
1673 | PP->getHeaderSearchInfo().getHeaderSearchOpts(); | |||
1674 | ||||
1675 | std::string ModuleFileName; | |||
1676 | enum ModuleSource { | |||
1677 | ModuleNotFound, ModuleCache, PrebuiltModulePath, ModuleBuildPragma | |||
1678 | } Source = ModuleNotFound; | |||
1679 | ||||
1680 | // Check to see if the module has been built as part of this compilation | |||
1681 | // via a module build pragma. | |||
1682 | auto BuiltModuleIt = BuiltModules.find(ModuleName); | |||
1683 | if (BuiltModuleIt != BuiltModules.end()) { | |||
1684 | ModuleFileName = BuiltModuleIt->second; | |||
1685 | Source = ModuleBuildPragma; | |||
1686 | } | |||
1687 | ||||
1688 | // Try to load the module from the prebuilt module path. | |||
1689 | if (Source == ModuleNotFound && (!HSOpts.PrebuiltModuleFiles.empty() || | |||
1690 | !HSOpts.PrebuiltModulePaths.empty())) { | |||
1691 | ModuleFileName = | |||
1692 | PP->getHeaderSearchInfo().getPrebuiltModuleFileName(ModuleName); | |||
1693 | if (!ModuleFileName.empty()) | |||
1694 | Source = PrebuiltModulePath; | |||
1695 | } | |||
1696 | ||||
1697 | // Try to load the module from the module cache. | |||
1698 | if (Source == ModuleNotFound && Module) { | |||
1699 | ModuleFileName = PP->getHeaderSearchInfo().getCachedModuleFileName(Module); | |||
1700 | Source = ModuleCache; | |||
1701 | } | |||
1702 | ||||
1703 | if (Source == ModuleNotFound) { | |||
1704 | // We can't find a module, error out here. | |||
1705 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_found) | |||
1706 | << ModuleName << SourceRange(ImportLoc, ModuleNameLoc); | |||
1707 | ModuleBuildFailed = true; | |||
1708 | return ModuleLoadResult(); | |||
1709 | } | |||
1710 | ||||
1711 | if (ModuleFileName.empty()) { | |||
1712 | if (Module && Module->HasIncompatibleModuleFile) { | |||
1713 | // We tried and failed to load a module file for this module. Fall | |||
1714 | // back to textual inclusion for its headers. | |||
1715 | return ModuleLoadResult::ConfigMismatch; | |||
1716 | } | |||
1717 | ||||
1718 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_build_disabled) | |||
1719 | << ModuleName; | |||
1720 | ModuleBuildFailed = true; | |||
1721 | return ModuleLoadResult(); | |||
1722 | } | |||
1723 | ||||
1724 | // If we don't already have an ASTReader, create one now. | |||
1725 | if (!ModuleManager) | |||
1726 | createModuleManager(); | |||
1727 | ||||
1728 | llvm::Timer Timer; | |||
1729 | if (FrontendTimerGroup) | |||
1730 | Timer.init("loading." + ModuleFileName, "Loading " + ModuleFileName, | |||
1731 | *FrontendTimerGroup); | |||
1732 | llvm::TimeRegion TimeLoading(FrontendTimerGroup ? &Timer : nullptr); | |||
1733 | ||||
1734 | // Try to load the module file. If we are not trying to load from the | |||
1735 | // module cache, we don't know how to rebuild modules. | |||
1736 | unsigned ARRFlags = Source == ModuleCache ? | |||
1737 | ASTReader::ARR_OutOfDate | ASTReader::ARR_Missing : | |||
1738 | ASTReader::ARR_ConfigurationMismatch; | |||
1739 | switch (ModuleManager->ReadAST(ModuleFileName, | |||
1740 | Source == PrebuiltModulePath | |||
1741 | ? serialization::MK_PrebuiltModule | |||
1742 | : Source == ModuleBuildPragma | |||
1743 | ? serialization::MK_ExplicitModule | |||
1744 | : serialization::MK_ImplicitModule, | |||
1745 | ImportLoc, ARRFlags)) { | |||
1746 | case ASTReader::Success: { | |||
1747 | if (Source != ModuleCache && !Module) { | |||
1748 | Module = PP->getHeaderSearchInfo().lookupModule(ModuleName); | |||
1749 | if (!Module || !Module->getASTFile() || | |||
1750 | FileMgr->getFile(ModuleFileName) != Module->getASTFile()) { | |||
1751 | // Error out if Module does not refer to the file in the prebuilt | |||
1752 | // module path. | |||
1753 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_prebuilt) | |||
1754 | << ModuleName; | |||
1755 | ModuleBuildFailed = true; | |||
1756 | KnownModules[Path[0].first] = nullptr; | |||
1757 | return ModuleLoadResult(); | |||
1758 | } | |||
1759 | } | |||
1760 | break; | |||
1761 | } | |||
1762 | ||||
1763 | case ASTReader::OutOfDate: | |||
1764 | case ASTReader::Missing: { | |||
1765 | if (Source != ModuleCache) { | |||
1766 | // We don't know the desired configuration for this module and don't | |||
1767 | // necessarily even have a module map. Since ReadAST already produces | |||
1768 | // diagnostics for these two cases, we simply error out here. | |||
1769 | ModuleBuildFailed = true; | |||
1770 | KnownModules[Path[0].first] = nullptr; | |||
1771 | return ModuleLoadResult(); | |||
1772 | } | |||
1773 | ||||
1774 | // The module file is missing or out-of-date. Build it. | |||
1775 | assert(Module && "missing module file")(static_cast <bool> (Module && "missing module file" ) ? void (0) : __assert_fail ("Module && \"missing module file\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1775, __extension__ __PRETTY_FUNCTION__)); | |||
1776 | // Check whether there is a cycle in the module graph. | |||
1777 | ModuleBuildStack ModPath = getSourceManager().getModuleBuildStack(); | |||
1778 | ModuleBuildStack::iterator Pos = ModPath.begin(), PosEnd = ModPath.end(); | |||
1779 | for (; Pos != PosEnd; ++Pos) { | |||
1780 | if (Pos->first == ModuleName) | |||
1781 | break; | |||
1782 | } | |||
1783 | ||||
1784 | if (Pos != PosEnd) { | |||
1785 | SmallString<256> CyclePath; | |||
1786 | for (; Pos != PosEnd; ++Pos) { | |||
1787 | CyclePath += Pos->first; | |||
1788 | CyclePath += " -> "; | |||
1789 | } | |||
1790 | CyclePath += ModuleName; | |||
1791 | ||||
1792 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_cycle) | |||
1793 | << ModuleName << CyclePath; | |||
1794 | return ModuleLoadResult(); | |||
1795 | } | |||
1796 | ||||
1797 | // Check whether we have already attempted to build this module (but | |||
1798 | // failed). | |||
1799 | if (getPreprocessorOpts().FailedModules && | |||
1800 | getPreprocessorOpts().FailedModules->hasAlreadyFailed(ModuleName)) { | |||
1801 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_built) | |||
1802 | << ModuleName | |||
1803 | << SourceRange(ImportLoc, ModuleNameLoc); | |||
1804 | ModuleBuildFailed = true; | |||
1805 | return ModuleLoadResult(); | |||
1806 | } | |||
1807 | ||||
1808 | // Try to compile and then load the module. | |||
1809 | if (!compileAndLoadModule(*this, ImportLoc, ModuleNameLoc, Module, | |||
1810 | ModuleFileName)) { | |||
1811 | assert(getDiagnostics().hasErrorOccurred() &&(static_cast <bool> (getDiagnostics().hasErrorOccurred( ) && "undiagnosed error in compileAndLoadModule") ? void (0) : __assert_fail ("getDiagnostics().hasErrorOccurred() && \"undiagnosed error in compileAndLoadModule\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1812, __extension__ __PRETTY_FUNCTION__)) | |||
1812 | "undiagnosed error in compileAndLoadModule")(static_cast <bool> (getDiagnostics().hasErrorOccurred( ) && "undiagnosed error in compileAndLoadModule") ? void (0) : __assert_fail ("getDiagnostics().hasErrorOccurred() && \"undiagnosed error in compileAndLoadModule\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1812, __extension__ __PRETTY_FUNCTION__)); | |||
1813 | if (getPreprocessorOpts().FailedModules) | |||
1814 | getPreprocessorOpts().FailedModules->addFailed(ModuleName); | |||
1815 | KnownModules[Path[0].first] = nullptr; | |||
1816 | ModuleBuildFailed = true; | |||
1817 | return ModuleLoadResult(); | |||
1818 | } | |||
1819 | ||||
1820 | // Okay, we've rebuilt and now loaded the module. | |||
1821 | break; | |||
1822 | } | |||
1823 | ||||
1824 | case ASTReader::ConfigurationMismatch: | |||
1825 | if (Source == PrebuiltModulePath) | |||
1826 | // FIXME: We shouldn't be setting HadFatalFailure below if we only | |||
1827 | // produce a warning here! | |||
1828 | getDiagnostics().Report(SourceLocation(), | |||
1829 | diag::warn_module_config_mismatch) | |||
1830 | << ModuleFileName; | |||
1831 | // Fall through to error out. | |||
1832 | LLVM_FALLTHROUGH[[clang::fallthrough]]; | |||
1833 | case ASTReader::VersionMismatch: | |||
1834 | case ASTReader::HadErrors: | |||
1835 | ModuleLoader::HadFatalFailure = true; | |||
1836 | // FIXME: The ASTReader will already have complained, but can we shoehorn | |||
1837 | // that diagnostic information into a more useful form? | |||
1838 | KnownModules[Path[0].first] = nullptr; | |||
1839 | return ModuleLoadResult(); | |||
1840 | ||||
1841 | case ASTReader::Failure: | |||
1842 | ModuleLoader::HadFatalFailure = true; | |||
1843 | // Already complained, but note now that we failed. | |||
1844 | KnownModules[Path[0].first] = nullptr; | |||
1845 | ModuleBuildFailed = true; | |||
1846 | return ModuleLoadResult(); | |||
1847 | } | |||
1848 | ||||
1849 | // Cache the result of this top-level module lookup for later. | |||
1850 | Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first; | |||
1851 | } | |||
1852 | ||||
1853 | // If we never found the module, fail. | |||
1854 | if (!Module) | |||
1855 | return ModuleLoadResult(); | |||
1856 | ||||
1857 | // Verify that the rest of the module path actually corresponds to | |||
1858 | // a submodule. | |||
1859 | bool MapPrivateSubModToTopLevel = false; | |||
1860 | if (!getLangOpts().ModulesTS && Path.size() > 1) { | |||
1861 | for (unsigned I = 1, N = Path.size(); I != N; ++I) { | |||
1862 | StringRef Name = Path[I].first->getName(); | |||
1863 | clang::Module *Sub = Module->findSubmodule(Name); | |||
1864 | ||||
1865 | // If the user is requesting Foo.Private and it doesn't exist, try to | |||
1866 | // match Foo_Private and emit a warning asking for the user to write | |||
1867 | // @import Foo_Private instead. FIXME: remove this when existing clients | |||
1868 | // migrate off of Foo.Private syntax. | |||
1869 | if (!Sub && PP->getLangOpts().ImplicitModules && Name == "Private" && | |||
1870 | Module == Module->getTopLevelModule()) { | |||
1871 | SmallString<128> PrivateModule(Module->Name); | |||
1872 | PrivateModule.append("_Private"); | |||
1873 | ||||
1874 | SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> PrivPath; | |||
1875 | auto &II = PP->getIdentifierTable().get( | |||
1876 | PrivateModule, PP->getIdentifierInfo(Module->Name)->getTokenID()); | |||
1877 | PrivPath.push_back(std::make_pair(&II, Path[0].second)); | |||
1878 | ||||
1879 | if (PP->getHeaderSearchInfo().lookupModule(PrivateModule)) | |||
1880 | Sub = | |||
1881 | loadModule(ImportLoc, PrivPath, Visibility, IsInclusionDirective); | |||
1882 | if (Sub) { | |||
1883 | MapPrivateSubModToTopLevel = true; | |||
1884 | if (!getDiagnostics().isIgnored( | |||
1885 | diag::warn_no_priv_submodule_use_toplevel, ImportLoc)) { | |||
1886 | getDiagnostics().Report(Path[I].second, | |||
1887 | diag::warn_no_priv_submodule_use_toplevel) | |||
1888 | << Path[I].first << Module->getFullModuleName() << PrivateModule | |||
1889 | << SourceRange(Path[0].second, Path[I].second) | |||
1890 | << FixItHint::CreateReplacement(SourceRange(Path[0].second), | |||
1891 | PrivateModule); | |||
1892 | getDiagnostics().Report(Sub->DefinitionLoc, | |||
1893 | diag::note_private_top_level_defined); | |||
1894 | } | |||
1895 | } | |||
1896 | } | |||
1897 | ||||
1898 | if (!Sub) { | |||
1899 | // Attempt to perform typo correction to find a module name that works. | |||
1900 | SmallVector<StringRef, 2> Best; | |||
1901 | unsigned BestEditDistance = (std::numeric_limits<unsigned>::max)(); | |||
1902 | ||||
1903 | for (clang::Module::submodule_iterator J = Module->submodule_begin(), | |||
1904 | JEnd = Module->submodule_end(); | |||
1905 | J != JEnd; ++J) { | |||
1906 | unsigned ED = Name.edit_distance((*J)->Name, | |||
1907 | /*AllowReplacements=*/true, | |||
1908 | BestEditDistance); | |||
1909 | if (ED <= BestEditDistance) { | |||
1910 | if (ED < BestEditDistance) { | |||
1911 | Best.clear(); | |||
1912 | BestEditDistance = ED; | |||
1913 | } | |||
1914 | ||||
1915 | Best.push_back((*J)->Name); | |||
1916 | } | |||
1917 | } | |||
1918 | ||||
1919 | // If there was a clear winner, user it. | |||
1920 | if (Best.size() == 1) { | |||
1921 | getDiagnostics().Report(Path[I].second, | |||
1922 | diag::err_no_submodule_suggest) | |||
1923 | << Path[I].first << Module->getFullModuleName() << Best[0] | |||
1924 | << SourceRange(Path[0].second, Path[I-1].second) | |||
1925 | << FixItHint::CreateReplacement(SourceRange(Path[I].second), | |||
1926 | Best[0]); | |||
1927 | ||||
1928 | Sub = Module->findSubmodule(Best[0]); | |||
1929 | } | |||
1930 | } | |||
1931 | ||||
1932 | if (!Sub) { | |||
1933 | // No submodule by this name. Complain, and don't look for further | |||
1934 | // submodules. | |||
1935 | getDiagnostics().Report(Path[I].second, diag::err_no_submodule) | |||
1936 | << Path[I].first << Module->getFullModuleName() | |||
1937 | << SourceRange(Path[0].second, Path[I-1].second); | |||
1938 | break; | |||
1939 | } | |||
1940 | ||||
1941 | Module = Sub; | |||
1942 | } | |||
1943 | } | |||
1944 | ||||
1945 | // Make the named module visible, if it's not already part of the module | |||
1946 | // we are parsing. | |||
1947 | if (ModuleName != getLangOpts().CurrentModule) { | |||
1948 | if (!Module->IsFromModuleFile && !MapPrivateSubModToTopLevel) { | |||
1949 | // We have an umbrella header or directory that doesn't actually include | |||
1950 | // all of the headers within the directory it covers. Complain about | |||
1951 | // this missing submodule and recover by forgetting that we ever saw | |||
1952 | // this submodule. | |||
1953 | // FIXME: Should we detect this at module load time? It seems fairly | |||
1954 | // expensive (and rare). | |||
1955 | getDiagnostics().Report(ImportLoc, diag::warn_missing_submodule) | |||
1956 | << Module->getFullModuleName() | |||
1957 | << SourceRange(Path.front().second, Path.back().second); | |||
1958 | ||||
1959 | return ModuleLoadResult::MissingExpected; | |||
1960 | } | |||
1961 | ||||
1962 | // Check whether this module is available. | |||
1963 | if (Preprocessor::checkModuleIsAvailable(getLangOpts(), getTarget(), | |||
1964 | getDiagnostics(), Module)) { | |||
1965 | getDiagnostics().Report(ImportLoc, diag::note_module_import_here) | |||
1966 | << SourceRange(Path.front().second, Path.back().second); | |||
1967 | LastModuleImportLoc = ImportLoc; | |||
1968 | LastModuleImportResult = ModuleLoadResult(); | |||
1969 | return ModuleLoadResult(); | |||
1970 | } | |||
1971 | ||||
1972 | ModuleManager->makeModuleVisible(Module, Visibility, ImportLoc); | |||
1973 | } | |||
1974 | ||||
1975 | // Check for any configuration macros that have changed. | |||
1976 | clang::Module *TopModule = Module->getTopLevelModule(); | |||
1977 | for (unsigned I = 0, N = TopModule->ConfigMacros.size(); I != N; ++I) { | |||
1978 | checkConfigMacro(getPreprocessor(), TopModule->ConfigMacros[I], | |||
1979 | Module, ImportLoc); | |||
1980 | } | |||
1981 | ||||
1982 | LastModuleImportLoc = ImportLoc; | |||
1983 | LastModuleImportResult = ModuleLoadResult(Module); | |||
1984 | return LastModuleImportResult; | |||
1985 | } | |||
1986 | ||||
1987 | void CompilerInstance::loadModuleFromSource(SourceLocation ImportLoc, | |||
1988 | StringRef ModuleName, | |||
1989 | StringRef Source) { | |||
1990 | // Avoid creating filenames with special characters. | |||
1991 | SmallString<128> CleanModuleName(ModuleName); | |||
1992 | for (auto &C : CleanModuleName) | |||
1993 | if (!isAlphanumeric(C)) | |||
1994 | C = '_'; | |||
1995 | ||||
1996 | // FIXME: Using a randomized filename here means that our intermediate .pcm | |||
1997 | // output is nondeterministic (as .pcm files refer to each other by name). | |||
1998 | // Can this affect the output in any way? | |||
1999 | SmallString<128> ModuleFileName; | |||
2000 | if (std::error_code EC = llvm::sys::fs::createTemporaryFile( | |||
2001 | CleanModuleName, "pcm", ModuleFileName)) { | |||
2002 | getDiagnostics().Report(ImportLoc, diag::err_fe_unable_to_open_output) | |||
2003 | << ModuleFileName << EC.message(); | |||
2004 | return; | |||
2005 | } | |||
2006 | std::string ModuleMapFileName = (CleanModuleName + ".map").str(); | |||
2007 | ||||
2008 | FrontendInputFile Input( | |||
2009 | ModuleMapFileName, | |||
2010 | InputKind(getLanguageFromOptions(*Invocation->getLangOpts()), | |||
2011 | InputKind::ModuleMap, /*Preprocessed*/true)); | |||
2012 | ||||
2013 | std::string NullTerminatedSource(Source.str()); | |||
2014 | ||||
2015 | auto PreBuildStep = [&](CompilerInstance &Other) { | |||
2016 | // Create a virtual file containing our desired source. | |||
2017 | // FIXME: We shouldn't need to do this. | |||
2018 | const FileEntry *ModuleMapFile = Other.getFileManager().getVirtualFile( | |||
2019 | ModuleMapFileName, NullTerminatedSource.size(), 0); | |||
2020 | Other.getSourceManager().overrideFileContents( | |||
2021 | ModuleMapFile, | |||
2022 | llvm::MemoryBuffer::getMemBuffer(NullTerminatedSource.c_str())); | |||
2023 | ||||
2024 | Other.BuiltModules = std::move(BuiltModules); | |||
2025 | Other.DeleteBuiltModules = false; | |||
2026 | }; | |||
2027 | ||||
2028 | auto PostBuildStep = [this](CompilerInstance &Other) { | |||
2029 | BuiltModules = std::move(Other.BuiltModules); | |||
2030 | }; | |||
2031 | ||||
2032 | // Build the module, inheriting any modules that we've built locally. | |||
2033 | if (compileModuleImpl(*this, ImportLoc, ModuleName, Input, StringRef(), | |||
2034 | ModuleFileName, PreBuildStep, PostBuildStep)) { | |||
2035 | BuiltModules[ModuleName] = ModuleFileName.str(); | |||
2036 | llvm::sys::RemoveFileOnSignal(ModuleFileName); | |||
2037 | } | |||
2038 | } | |||
2039 | ||||
2040 | void CompilerInstance::makeModuleVisible(Module *Mod, | |||
2041 | Module::NameVisibilityKind Visibility, | |||
2042 | SourceLocation ImportLoc) { | |||
2043 | if (!ModuleManager) | |||
2044 | createModuleManager(); | |||
2045 | if (!ModuleManager) | |||
2046 | return; | |||
2047 | ||||
2048 | ModuleManager->makeModuleVisible(Mod, Visibility, ImportLoc); | |||
2049 | } | |||
2050 | ||||
2051 | GlobalModuleIndex *CompilerInstance::loadGlobalModuleIndex( | |||
2052 | SourceLocation TriggerLoc) { | |||
2053 | if (getPreprocessor().getHeaderSearchInfo().getModuleCachePath().empty()) | |||
2054 | return nullptr; | |||
2055 | if (!ModuleManager) | |||
2056 | createModuleManager(); | |||
2057 | // Can't do anything if we don't have the module manager. | |||
2058 | if (!ModuleManager) | |||
2059 | return nullptr; | |||
2060 | // Get an existing global index. This loads it if not already | |||
2061 | // loaded. | |||
2062 | ModuleManager->loadGlobalIndex(); | |||
2063 | GlobalModuleIndex *GlobalIndex = ModuleManager->getGlobalIndex(); | |||
2064 | // If the global index doesn't exist, create it. | |||
2065 | if (!GlobalIndex && shouldBuildGlobalModuleIndex() && hasFileManager() && | |||
2066 | hasPreprocessor()) { | |||
2067 | llvm::sys::fs::create_directories( | |||
2068 | getPreprocessor().getHeaderSearchInfo().getModuleCachePath()); | |||
2069 | GlobalModuleIndex::writeIndex( | |||
2070 | getFileManager(), getPCHContainerReader(), | |||
2071 | getPreprocessor().getHeaderSearchInfo().getModuleCachePath()); | |||
2072 | ModuleManager->resetForReload(); | |||
2073 | ModuleManager->loadGlobalIndex(); | |||
2074 | GlobalIndex = ModuleManager->getGlobalIndex(); | |||
2075 | } | |||
2076 | // For finding modules needing to be imported for fixit messages, | |||
2077 | // we need to make the global index cover all modules, so we do that here. | |||
2078 | if (!HaveFullGlobalModuleIndex && GlobalIndex && !buildingModule()) { | |||
2079 | ModuleMap &MMap = getPreprocessor().getHeaderSearchInfo().getModuleMap(); | |||
2080 | bool RecreateIndex = false; | |||
2081 | for (ModuleMap::module_iterator I = MMap.module_begin(), | |||
2082 | E = MMap.module_end(); I != E; ++I) { | |||
2083 | Module *TheModule = I->second; | |||
2084 | const FileEntry *Entry = TheModule->getASTFile(); | |||
2085 | if (!Entry) { | |||
2086 | SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path; | |||
2087 | Path.push_back(std::make_pair( | |||
2088 | getPreprocessor().getIdentifierInfo(TheModule->Name), TriggerLoc)); | |||
2089 | std::reverse(Path.begin(), Path.end()); | |||
2090 | // Load a module as hidden. This also adds it to the global index. | |||
2091 | loadModule(TheModule->DefinitionLoc, Path, Module::Hidden, false); | |||
2092 | RecreateIndex = true; | |||
2093 | } | |||
2094 | } | |||
2095 | if (RecreateIndex) { | |||
2096 | GlobalModuleIndex::writeIndex( | |||
2097 | getFileManager(), getPCHContainerReader(), | |||
2098 | getPreprocessor().getHeaderSearchInfo().getModuleCachePath()); | |||
2099 | ModuleManager->resetForReload(); | |||
2100 | ModuleManager->loadGlobalIndex(); | |||
2101 | GlobalIndex = ModuleManager->getGlobalIndex(); | |||
2102 | } | |||
2103 | HaveFullGlobalModuleIndex = true; | |||
2104 | } | |||
2105 | return GlobalIndex; | |||
2106 | } | |||
2107 | ||||
2108 | // Check global module index for missing imports. | |||
2109 | bool | |||
2110 | CompilerInstance::lookupMissingImports(StringRef Name, | |||
2111 | SourceLocation TriggerLoc) { | |||
2112 | // Look for the symbol in non-imported modules, but only if an error | |||
2113 | // actually occurred. | |||
2114 | if (!buildingModule()) { | |||
2115 | // Load global module index, or retrieve a previously loaded one. | |||
2116 | GlobalModuleIndex *GlobalIndex = loadGlobalModuleIndex( | |||
2117 | TriggerLoc); | |||
2118 | ||||
2119 | // Only if we have a global index. | |||
2120 | if (GlobalIndex) { | |||
2121 | GlobalModuleIndex::HitSet FoundModules; | |||
2122 | ||||
2123 | // Find the modules that reference the identifier. | |||
2124 | // Note that this only finds top-level modules. | |||
2125 | // We'll let diagnoseTypo find the actual declaration module. | |||
2126 | if (GlobalIndex->lookupIdentifier(Name, FoundModules)) | |||
2127 | return true; | |||
2128 | } | |||
2129 | } | |||
2130 | ||||
2131 | return false; | |||
2132 | } | |||
2133 | void CompilerInstance::resetAndLeakSema() { BuryPointer(takeSema()); } | |||
2134 | ||||
2135 | void CompilerInstance::setExternalSemaSource( | |||
2136 | IntrusiveRefCntPtr<ExternalSemaSource> ESS) { | |||
2137 | ExternalSemaSrc = std::move(ESS); | |||
2138 | } |