forked from OSchip/llvm-project
1091 lines
40 KiB
C++
1091 lines
40 KiB
C++
//===--- CompilerInstance.cpp ---------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Sema/Sema.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/Version.h"
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#include "clang/Lex/HeaderSearch.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Lex/PTHManager.h"
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#include "clang/Frontend/ChainedDiagnosticConsumer.h"
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#include "clang/Frontend/FrontendAction.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/LogDiagnosticPrinter.h"
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#include "clang/Frontend/SerializedDiagnosticPrinter.h"
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#include "clang/Frontend/TextDiagnosticPrinter.h"
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#include "clang/Frontend/VerifyDiagnosticConsumer.h"
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#include "clang/Frontend/Utils.h"
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#include "clang/Serialization/ASTReader.h"
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#include "clang/Sema/CodeCompleteConsumer.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/Support/Timer.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/LockFileManager.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Program.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/system_error.h"
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#include "llvm/Support/CrashRecoveryContext.h"
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#include "llvm/Config/config.h"
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using namespace clang;
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CompilerInstance::CompilerInstance()
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: Invocation(new CompilerInvocation()), ModuleManager(0) {
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}
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CompilerInstance::~CompilerInstance() {
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}
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void CompilerInstance::setInvocation(CompilerInvocation *Value) {
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Invocation = Value;
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}
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void CompilerInstance::setDiagnostics(DiagnosticsEngine *Value) {
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Diagnostics = Value;
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}
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void CompilerInstance::setTarget(TargetInfo *Value) {
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Target = Value;
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}
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void CompilerInstance::setFileManager(FileManager *Value) {
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FileMgr = Value;
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}
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void CompilerInstance::setSourceManager(SourceManager *Value) {
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SourceMgr = Value;
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}
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void CompilerInstance::setPreprocessor(Preprocessor *Value) { PP = Value; }
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void CompilerInstance::setASTContext(ASTContext *Value) { Context = Value; }
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void CompilerInstance::setSema(Sema *S) {
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TheSema.reset(S);
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}
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void CompilerInstance::setASTConsumer(ASTConsumer *Value) {
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Consumer.reset(Value);
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}
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void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) {
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CompletionConsumer.reset(Value);
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getFrontendOpts().SkipFunctionBodies = Value != 0;
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}
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// Diagnostics
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static void SetUpBuildDumpLog(const DiagnosticOptions &DiagOpts,
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unsigned argc, const char* const *argv,
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DiagnosticsEngine &Diags) {
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std::string ErrorInfo;
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OwningPtr<raw_ostream> OS(
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new llvm::raw_fd_ostream(DiagOpts.DumpBuildInformation.c_str(), ErrorInfo));
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if (!ErrorInfo.empty()) {
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Diags.Report(diag::err_fe_unable_to_open_logfile)
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<< DiagOpts.DumpBuildInformation << ErrorInfo;
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return;
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}
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(*OS) << "clang -cc1 command line arguments: ";
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for (unsigned i = 0; i != argc; ++i)
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(*OS) << argv[i] << ' ';
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(*OS) << '\n';
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// Chain in a diagnostic client which will log the diagnostics.
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DiagnosticConsumer *Logger =
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new TextDiagnosticPrinter(*OS.take(), DiagOpts, /*OwnsOutputStream=*/true);
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Diags.setClient(new ChainedDiagnosticConsumer(Diags.takeClient(), Logger));
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}
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static void SetUpDiagnosticLog(const DiagnosticOptions &DiagOpts,
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const CodeGenOptions *CodeGenOpts,
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DiagnosticsEngine &Diags) {
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std::string ErrorInfo;
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bool OwnsStream = false;
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raw_ostream *OS = &llvm::errs();
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if (DiagOpts.DiagnosticLogFile != "-") {
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// Create the output stream.
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llvm::raw_fd_ostream *FileOS(
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new llvm::raw_fd_ostream(DiagOpts.DiagnosticLogFile.c_str(),
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ErrorInfo, llvm::raw_fd_ostream::F_Append));
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if (!ErrorInfo.empty()) {
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Diags.Report(diag::warn_fe_cc_log_diagnostics_failure)
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<< DiagOpts.DumpBuildInformation << ErrorInfo;
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} else {
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FileOS->SetUnbuffered();
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FileOS->SetUseAtomicWrites(true);
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OS = FileOS;
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OwnsStream = true;
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}
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}
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// Chain in the diagnostic client which will log the diagnostics.
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LogDiagnosticPrinter *Logger = new LogDiagnosticPrinter(*OS, DiagOpts,
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OwnsStream);
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if (CodeGenOpts)
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Logger->setDwarfDebugFlags(CodeGenOpts->DwarfDebugFlags);
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Diags.setClient(new ChainedDiagnosticConsumer(Diags.takeClient(), Logger));
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}
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static void SetupSerializedDiagnostics(const DiagnosticOptions &DiagOpts,
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DiagnosticsEngine &Diags,
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StringRef OutputFile) {
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std::string ErrorInfo;
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OwningPtr<llvm::raw_fd_ostream> OS;
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OS.reset(new llvm::raw_fd_ostream(OutputFile.str().c_str(), ErrorInfo,
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llvm::raw_fd_ostream::F_Binary));
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if (!ErrorInfo.empty()) {
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Diags.Report(diag::warn_fe_serialized_diag_failure)
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<< OutputFile << ErrorInfo;
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return;
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}
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DiagnosticConsumer *SerializedConsumer =
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clang::serialized_diags::create(OS.take(), DiagOpts);
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Diags.setClient(new ChainedDiagnosticConsumer(Diags.takeClient(),
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SerializedConsumer));
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}
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void CompilerInstance::createDiagnostics(int Argc, const char* const *Argv,
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DiagnosticConsumer *Client,
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bool ShouldOwnClient,
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bool ShouldCloneClient) {
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Diagnostics = createDiagnostics(getDiagnosticOpts(), Argc, Argv, Client,
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ShouldOwnClient, ShouldCloneClient,
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&getCodeGenOpts());
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}
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IntrusiveRefCntPtr<DiagnosticsEngine>
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CompilerInstance::createDiagnostics(const DiagnosticOptions &Opts,
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int Argc, const char* const *Argv,
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DiagnosticConsumer *Client,
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bool ShouldOwnClient,
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bool ShouldCloneClient,
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const CodeGenOptions *CodeGenOpts) {
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IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
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IntrusiveRefCntPtr<DiagnosticsEngine>
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Diags(new DiagnosticsEngine(DiagID));
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// Create the diagnostic client for reporting errors or for
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// implementing -verify.
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if (Client) {
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if (ShouldCloneClient)
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Diags->setClient(Client->clone(*Diags), ShouldOwnClient);
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else
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Diags->setClient(Client, ShouldOwnClient);
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} else
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Diags->setClient(new TextDiagnosticPrinter(llvm::errs(), Opts));
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// Chain in -verify checker, if requested.
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if (Opts.VerifyDiagnostics)
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Diags->setClient(new VerifyDiagnosticConsumer(*Diags));
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// Chain in -diagnostic-log-file dumper, if requested.
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if (!Opts.DiagnosticLogFile.empty())
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SetUpDiagnosticLog(Opts, CodeGenOpts, *Diags);
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if (!Opts.DumpBuildInformation.empty())
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SetUpBuildDumpLog(Opts, Argc, Argv, *Diags);
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if (!Opts.DiagnosticSerializationFile.empty())
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SetupSerializedDiagnostics(Opts, *Diags,
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Opts.DiagnosticSerializationFile);
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// Configure our handling of diagnostics.
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ProcessWarningOptions(*Diags, Opts);
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return Diags;
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}
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// File Manager
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void CompilerInstance::createFileManager() {
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FileMgr = new FileManager(getFileSystemOpts());
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}
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// Source Manager
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void CompilerInstance::createSourceManager(FileManager &FileMgr) {
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SourceMgr = new SourceManager(getDiagnostics(), FileMgr);
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}
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// Preprocessor
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void CompilerInstance::createPreprocessor() {
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const PreprocessorOptions &PPOpts = getPreprocessorOpts();
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// Create a PTH manager if we are using some form of a token cache.
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PTHManager *PTHMgr = 0;
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if (!PPOpts.TokenCache.empty())
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PTHMgr = PTHManager::Create(PPOpts.TokenCache, getDiagnostics());
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// Create the Preprocessor.
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HeaderSearch *HeaderInfo = new HeaderSearch(getFileManager(),
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getDiagnostics(),
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getLangOpts(),
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&getTarget());
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PP = new Preprocessor(getDiagnostics(), getLangOpts(), &getTarget(),
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getSourceManager(), *HeaderInfo, *this, PTHMgr,
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/*OwnsHeaderSearch=*/true);
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// Note that this is different then passing PTHMgr to Preprocessor's ctor.
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// That argument is used as the IdentifierInfoLookup argument to
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// IdentifierTable's ctor.
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if (PTHMgr) {
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PTHMgr->setPreprocessor(&*PP);
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PP->setPTHManager(PTHMgr);
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}
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if (PPOpts.DetailedRecord)
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PP->createPreprocessingRecord(PPOpts.DetailedRecordConditionalDirectives);
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InitializePreprocessor(*PP, PPOpts, getHeaderSearchOpts(), getFrontendOpts());
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// Set up the module path, including the hash for the
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// module-creation options.
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SmallString<256> SpecificModuleCache(
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getHeaderSearchOpts().ModuleCachePath);
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if (!getHeaderSearchOpts().DisableModuleHash)
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llvm::sys::path::append(SpecificModuleCache,
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getInvocation().getModuleHash());
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PP->getHeaderSearchInfo().setModuleCachePath(SpecificModuleCache);
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// Handle generating dependencies, if requested.
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const DependencyOutputOptions &DepOpts = getDependencyOutputOpts();
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if (!DepOpts.OutputFile.empty())
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AttachDependencyFileGen(*PP, DepOpts);
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if (!DepOpts.DOTOutputFile.empty())
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AttachDependencyGraphGen(*PP, DepOpts.DOTOutputFile,
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getHeaderSearchOpts().Sysroot);
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// Handle generating header include information, if requested.
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if (DepOpts.ShowHeaderIncludes)
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AttachHeaderIncludeGen(*PP);
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if (!DepOpts.HeaderIncludeOutputFile.empty()) {
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StringRef OutputPath = DepOpts.HeaderIncludeOutputFile;
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if (OutputPath == "-")
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OutputPath = "";
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AttachHeaderIncludeGen(*PP, /*ShowAllHeaders=*/true, OutputPath,
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/*ShowDepth=*/false);
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}
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}
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// ASTContext
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void CompilerInstance::createASTContext() {
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Preprocessor &PP = getPreprocessor();
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Context = new ASTContext(getLangOpts(), PP.getSourceManager(),
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&getTarget(), PP.getIdentifierTable(),
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PP.getSelectorTable(), PP.getBuiltinInfo(),
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/*size_reserve=*/ 0);
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}
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// ExternalASTSource
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void CompilerInstance::createPCHExternalASTSource(StringRef Path,
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bool DisablePCHValidation,
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bool DisableStatCache,
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bool AllowPCHWithCompilerErrors,
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void *DeserializationListener){
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OwningPtr<ExternalASTSource> Source;
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bool Preamble = getPreprocessorOpts().PrecompiledPreambleBytes.first != 0;
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Source.reset(createPCHExternalASTSource(Path, getHeaderSearchOpts().Sysroot,
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DisablePCHValidation,
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DisableStatCache,
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AllowPCHWithCompilerErrors,
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getPreprocessor(), getASTContext(),
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DeserializationListener,
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Preamble));
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ModuleManager = static_cast<ASTReader*>(Source.get());
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getASTContext().setExternalSource(Source);
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}
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ExternalASTSource *
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CompilerInstance::createPCHExternalASTSource(StringRef Path,
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const std::string &Sysroot,
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bool DisablePCHValidation,
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bool DisableStatCache,
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bool AllowPCHWithCompilerErrors,
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Preprocessor &PP,
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ASTContext &Context,
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void *DeserializationListener,
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bool Preamble) {
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OwningPtr<ASTReader> Reader;
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Reader.reset(new ASTReader(PP, Context,
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Sysroot.empty() ? "" : Sysroot.c_str(),
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DisablePCHValidation, DisableStatCache,
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AllowPCHWithCompilerErrors));
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Reader->setDeserializationListener(
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static_cast<ASTDeserializationListener *>(DeserializationListener));
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switch (Reader->ReadAST(Path,
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Preamble ? serialization::MK_Preamble
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: serialization::MK_PCH)) {
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case ASTReader::Success:
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// Set the predefines buffer as suggested by the PCH reader. Typically, the
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// predefines buffer will be empty.
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PP.setPredefines(Reader->getSuggestedPredefines());
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return Reader.take();
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case ASTReader::Failure:
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// Unrecoverable failure: don't even try to process the input file.
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break;
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case ASTReader::IgnorePCH:
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// No suitable PCH file could be found. Return an error.
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break;
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}
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return 0;
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}
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// Code Completion
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static bool EnableCodeCompletion(Preprocessor &PP,
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const std::string &Filename,
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unsigned Line,
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unsigned Column) {
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// Tell the source manager to chop off the given file at a specific
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// line and column.
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const FileEntry *Entry = PP.getFileManager().getFile(Filename);
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if (!Entry) {
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PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file)
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<< Filename;
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return true;
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}
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// Truncate the named file at the given line/column.
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PP.SetCodeCompletionPoint(Entry, Line, Column);
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return false;
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}
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void CompilerInstance::createCodeCompletionConsumer() {
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const ParsedSourceLocation &Loc = getFrontendOpts().CodeCompletionAt;
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if (!CompletionConsumer) {
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setCodeCompletionConsumer(
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createCodeCompletionConsumer(getPreprocessor(),
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Loc.FileName, Loc.Line, Loc.Column,
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getFrontendOpts().CodeCompleteOpts,
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llvm::outs()));
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if (!CompletionConsumer)
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return;
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} else if (EnableCodeCompletion(getPreprocessor(), Loc.FileName,
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Loc.Line, Loc.Column)) {
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setCodeCompletionConsumer(0);
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return;
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}
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if (CompletionConsumer->isOutputBinary() &&
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llvm::sys::Program::ChangeStdoutToBinary()) {
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getPreprocessor().getDiagnostics().Report(diag::err_fe_stdout_binary);
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setCodeCompletionConsumer(0);
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}
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}
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void CompilerInstance::createFrontendTimer() {
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FrontendTimer.reset(new llvm::Timer("Clang front-end timer"));
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}
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CodeCompleteConsumer *
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CompilerInstance::createCodeCompletionConsumer(Preprocessor &PP,
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const std::string &Filename,
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unsigned Line,
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unsigned Column,
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const CodeCompleteOptions &Opts,
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raw_ostream &OS) {
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if (EnableCodeCompletion(PP, Filename, Line, Column))
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return 0;
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// Set up the creation routine for code-completion.
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return new PrintingCodeCompleteConsumer(Opts, OS);
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}
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void CompilerInstance::createSema(TranslationUnitKind TUKind,
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CodeCompleteConsumer *CompletionConsumer) {
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TheSema.reset(new Sema(getPreprocessor(), getASTContext(), getASTConsumer(),
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TUKind, CompletionConsumer));
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}
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// Output Files
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void CompilerInstance::addOutputFile(const OutputFile &OutFile) {
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assert(OutFile.OS && "Attempt to add empty stream to output list!");
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OutputFiles.push_back(OutFile);
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}
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void CompilerInstance::clearOutputFiles(bool EraseFiles) {
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for (std::list<OutputFile>::iterator
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it = OutputFiles.begin(), ie = OutputFiles.end(); it != ie; ++it) {
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delete it->OS;
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if (!it->TempFilename.empty()) {
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if (EraseFiles) {
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bool existed;
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llvm::sys::fs::remove(it->TempFilename, existed);
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} else {
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SmallString<128> NewOutFile(it->Filename);
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// If '-working-directory' was passed, the output filename should be
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// relative to that.
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FileMgr->FixupRelativePath(NewOutFile);
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if (llvm::error_code ec = llvm::sys::fs::rename(it->TempFilename,
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NewOutFile.str())) {
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getDiagnostics().Report(diag::err_unable_to_rename_temp)
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<< it->TempFilename << it->Filename << ec.message();
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bool existed;
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llvm::sys::fs::remove(it->TempFilename, existed);
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}
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}
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} else if (!it->Filename.empty() && EraseFiles)
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llvm::sys::Path(it->Filename).eraseFromDisk();
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}
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OutputFiles.clear();
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}
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llvm::raw_fd_ostream *
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CompilerInstance::createDefaultOutputFile(bool Binary,
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StringRef InFile,
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StringRef Extension) {
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return createOutputFile(getFrontendOpts().OutputFile, Binary,
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/*RemoveFileOnSignal=*/true, InFile, Extension,
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/*UseTemporary=*/true);
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}
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llvm::raw_fd_ostream *
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CompilerInstance::createOutputFile(StringRef OutputPath,
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bool Binary, bool RemoveFileOnSignal,
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StringRef InFile,
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StringRef Extension,
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bool UseTemporary,
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bool CreateMissingDirectories) {
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std::string Error, OutputPathName, TempPathName;
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llvm::raw_fd_ostream *OS = createOutputFile(OutputPath, Error, Binary,
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RemoveFileOnSignal,
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InFile, Extension,
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UseTemporary,
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CreateMissingDirectories,
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&OutputPathName,
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&TempPathName);
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if (!OS) {
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getDiagnostics().Report(diag::err_fe_unable_to_open_output)
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<< OutputPath << Error;
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return 0;
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}
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// Add the output file -- but don't try to remove "-", since this means we are
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// using stdin.
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addOutputFile(OutputFile((OutputPathName != "-") ? OutputPathName : "",
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TempPathName, OS));
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return OS;
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}
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llvm::raw_fd_ostream *
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CompilerInstance::createOutputFile(StringRef OutputPath,
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std::string &Error,
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bool Binary,
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bool RemoveFileOnSignal,
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StringRef InFile,
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StringRef Extension,
|
|
bool UseTemporary,
|
|
bool CreateMissingDirectories,
|
|
std::string *ResultPathName,
|
|
std::string *TempPathName) {
|
|
assert((!CreateMissingDirectories || UseTemporary) &&
|
|
"CreateMissingDirectories is only allowed when using temporary files");
|
|
|
|
std::string OutFile, TempFile;
|
|
if (!OutputPath.empty()) {
|
|
OutFile = OutputPath;
|
|
} else if (InFile == "-") {
|
|
OutFile = "-";
|
|
} else if (!Extension.empty()) {
|
|
llvm::sys::Path Path(InFile);
|
|
Path.eraseSuffix();
|
|
Path.appendSuffix(Extension);
|
|
OutFile = Path.str();
|
|
} else {
|
|
OutFile = "-";
|
|
}
|
|
|
|
OwningPtr<llvm::raw_fd_ostream> OS;
|
|
std::string OSFile;
|
|
|
|
if (UseTemporary && OutFile != "-") {
|
|
// Only create the temporary if the parent directory exists (or create
|
|
// missing directories is true) and we can actually write to OutPath,
|
|
// otherwise we want to fail early.
|
|
SmallString<256> AbsPath(OutputPath);
|
|
llvm::sys::fs::make_absolute(AbsPath);
|
|
llvm::sys::Path OutPath(AbsPath);
|
|
bool ParentExists = false;
|
|
if (llvm::sys::fs::exists(llvm::sys::path::parent_path(AbsPath.str()),
|
|
ParentExists))
|
|
ParentExists = false;
|
|
bool Exists;
|
|
if ((CreateMissingDirectories || ParentExists) &&
|
|
((llvm::sys::fs::exists(AbsPath.str(), Exists) || !Exists) ||
|
|
(OutPath.isRegularFile() && OutPath.canWrite()))) {
|
|
// Create a temporary file.
|
|
SmallString<128> TempPath;
|
|
TempPath = OutFile;
|
|
TempPath += "-%%%%%%%%";
|
|
int fd;
|
|
if (llvm::sys::fs::unique_file(TempPath.str(), fd, TempPath,
|
|
/*makeAbsolute=*/false, 0664)
|
|
== llvm::errc::success) {
|
|
OS.reset(new llvm::raw_fd_ostream(fd, /*shouldClose=*/true));
|
|
OSFile = TempFile = TempPath.str();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!OS) {
|
|
OSFile = OutFile;
|
|
OS.reset(
|
|
new llvm::raw_fd_ostream(OSFile.c_str(), Error,
|
|
(Binary ? llvm::raw_fd_ostream::F_Binary : 0)));
|
|
if (!Error.empty())
|
|
return 0;
|
|
}
|
|
|
|
// Make sure the out stream file gets removed if we crash.
|
|
if (RemoveFileOnSignal)
|
|
llvm::sys::RemoveFileOnSignal(llvm::sys::Path(OSFile));
|
|
|
|
if (ResultPathName)
|
|
*ResultPathName = OutFile;
|
|
if (TempPathName)
|
|
*TempPathName = TempFile;
|
|
|
|
return OS.take();
|
|
}
|
|
|
|
// Initialization Utilities
|
|
|
|
bool CompilerInstance::InitializeSourceManager(StringRef InputFile,
|
|
SrcMgr::CharacteristicKind Kind){
|
|
return InitializeSourceManager(InputFile, Kind, getDiagnostics(),
|
|
getFileManager(), getSourceManager(),
|
|
getFrontendOpts());
|
|
}
|
|
|
|
bool CompilerInstance::InitializeSourceManager(StringRef InputFile,
|
|
SrcMgr::CharacteristicKind Kind,
|
|
DiagnosticsEngine &Diags,
|
|
FileManager &FileMgr,
|
|
SourceManager &SourceMgr,
|
|
const FrontendOptions &Opts) {
|
|
// Figure out where to get and map in the main file.
|
|
if (InputFile != "-") {
|
|
const FileEntry *File = FileMgr.getFile(InputFile);
|
|
if (!File) {
|
|
Diags.Report(diag::err_fe_error_reading) << InputFile;
|
|
return false;
|
|
}
|
|
SourceMgr.createMainFileID(File, Kind);
|
|
} else {
|
|
OwningPtr<llvm::MemoryBuffer> SB;
|
|
if (llvm::MemoryBuffer::getSTDIN(SB)) {
|
|
// FIXME: Give ec.message() in this diag.
|
|
Diags.Report(diag::err_fe_error_reading_stdin);
|
|
return false;
|
|
}
|
|
const FileEntry *File = FileMgr.getVirtualFile(SB->getBufferIdentifier(),
|
|
SB->getBufferSize(), 0);
|
|
SourceMgr.createMainFileID(File, Kind);
|
|
SourceMgr.overrideFileContents(File, SB.take());
|
|
}
|
|
|
|
assert(!SourceMgr.getMainFileID().isInvalid() &&
|
|
"Couldn't establish MainFileID!");
|
|
return true;
|
|
}
|
|
|
|
// High-Level Operations
|
|
|
|
bool CompilerInstance::ExecuteAction(FrontendAction &Act) {
|
|
assert(hasDiagnostics() && "Diagnostics engine is not initialized!");
|
|
assert(!getFrontendOpts().ShowHelp && "Client must handle '-help'!");
|
|
assert(!getFrontendOpts().ShowVersion && "Client must handle '-version'!");
|
|
|
|
// FIXME: Take this as an argument, once all the APIs we used have moved to
|
|
// taking it as an input instead of hard-coding llvm::errs.
|
|
raw_ostream &OS = llvm::errs();
|
|
|
|
// Create the target instance.
|
|
setTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), getTargetOpts()));
|
|
if (!hasTarget())
|
|
return false;
|
|
|
|
// Inform the target of the language options.
|
|
//
|
|
// FIXME: We shouldn't need to do this, the target should be immutable once
|
|
// created. This complexity should be lifted elsewhere.
|
|
getTarget().setForcedLangOptions(getLangOpts());
|
|
|
|
// rewriter project will change target built-in bool type from its default.
|
|
if (getFrontendOpts().ProgramAction == frontend::RewriteObjC)
|
|
getTarget().noSignedCharForObjCBool();
|
|
|
|
// Validate/process some options.
|
|
if (getHeaderSearchOpts().Verbose)
|
|
OS << "clang -cc1 version " CLANG_VERSION_STRING
|
|
<< " based upon " << PACKAGE_STRING
|
|
<< " default target " << llvm::sys::getDefaultTargetTriple() << "\n";
|
|
|
|
if (getFrontendOpts().ShowTimers)
|
|
createFrontendTimer();
|
|
|
|
if (getFrontendOpts().ShowStats)
|
|
llvm::EnableStatistics();
|
|
|
|
for (unsigned i = 0, e = getFrontendOpts().Inputs.size(); i != e; ++i) {
|
|
// Reset the ID tables if we are reusing the SourceManager.
|
|
if (hasSourceManager())
|
|
getSourceManager().clearIDTables();
|
|
|
|
if (Act.BeginSourceFile(*this, getFrontendOpts().Inputs[i])) {
|
|
Act.Execute();
|
|
Act.EndSourceFile();
|
|
}
|
|
}
|
|
|
|
// Notify the diagnostic client that all files were processed.
|
|
getDiagnostics().getClient()->finish();
|
|
|
|
if (getDiagnosticOpts().ShowCarets) {
|
|
// We can have multiple diagnostics sharing one diagnostic client.
|
|
// Get the total number of warnings/errors from the client.
|
|
unsigned NumWarnings = getDiagnostics().getClient()->getNumWarnings();
|
|
unsigned NumErrors = getDiagnostics().getClient()->getNumErrors();
|
|
|
|
if (NumWarnings)
|
|
OS << NumWarnings << " warning" << (NumWarnings == 1 ? "" : "s");
|
|
if (NumWarnings && NumErrors)
|
|
OS << " and ";
|
|
if (NumErrors)
|
|
OS << NumErrors << " error" << (NumErrors == 1 ? "" : "s");
|
|
if (NumWarnings || NumErrors)
|
|
OS << " generated.\n";
|
|
}
|
|
|
|
if (getFrontendOpts().ShowStats && hasFileManager()) {
|
|
getFileManager().PrintStats();
|
|
OS << "\n";
|
|
}
|
|
|
|
return !getDiagnostics().getClient()->getNumErrors();
|
|
}
|
|
|
|
/// \brief Determine the appropriate source input kind based on language
|
|
/// options.
|
|
static InputKind getSourceInputKindFromOptions(const LangOptions &LangOpts) {
|
|
if (LangOpts.OpenCL)
|
|
return IK_OpenCL;
|
|
if (LangOpts.CUDA)
|
|
return IK_CUDA;
|
|
if (LangOpts.ObjC1)
|
|
return LangOpts.CPlusPlus? IK_ObjCXX : IK_ObjC;
|
|
return LangOpts.CPlusPlus? IK_CXX : IK_C;
|
|
}
|
|
|
|
namespace {
|
|
struct CompileModuleMapData {
|
|
CompilerInstance &Instance;
|
|
GenerateModuleAction &CreateModuleAction;
|
|
};
|
|
}
|
|
|
|
/// \brief Helper function that executes the module-generating action under
|
|
/// a crash recovery context.
|
|
static void doCompileMapModule(void *UserData) {
|
|
CompileModuleMapData &Data
|
|
= *reinterpret_cast<CompileModuleMapData *>(UserData);
|
|
Data.Instance.ExecuteAction(Data.CreateModuleAction);
|
|
}
|
|
|
|
/// \brief Compile a module file for the given module, using the options
|
|
/// provided by the importing compiler instance.
|
|
static void compileModule(CompilerInstance &ImportingInstance,
|
|
Module *Module,
|
|
StringRef ModuleFileName) {
|
|
llvm::LockFileManager Locked(ModuleFileName);
|
|
switch (Locked) {
|
|
case llvm::LockFileManager::LFS_Error:
|
|
return;
|
|
|
|
case llvm::LockFileManager::LFS_Owned:
|
|
// We're responsible for building the module ourselves. Do so below.
|
|
break;
|
|
|
|
case llvm::LockFileManager::LFS_Shared:
|
|
// Someone else is responsible for building the module. Wait for them to
|
|
// finish.
|
|
Locked.waitForUnlock();
|
|
break;
|
|
}
|
|
|
|
ModuleMap &ModMap
|
|
= ImportingInstance.getPreprocessor().getHeaderSearchInfo().getModuleMap();
|
|
|
|
// Construct a compiler invocation for creating this module.
|
|
IntrusiveRefCntPtr<CompilerInvocation> Invocation
|
|
(new CompilerInvocation(ImportingInstance.getInvocation()));
|
|
|
|
PreprocessorOptions &PPOpts = Invocation->getPreprocessorOpts();
|
|
|
|
// For any options that aren't intended to affect how a module is built,
|
|
// reset them to their default values.
|
|
Invocation->getLangOpts()->resetNonModularOptions();
|
|
PPOpts.resetNonModularOptions();
|
|
|
|
// Note the name of the module we're building.
|
|
Invocation->getLangOpts()->CurrentModule = Module->getTopLevelModuleName();
|
|
|
|
// Note that this module is part of the module build path, so that we
|
|
// can detect cycles in the module graph.
|
|
PPOpts.ModuleBuildPath.push_back(Module->getTopLevelModuleName());
|
|
|
|
// If there is a module map file, build the module using the module map.
|
|
// Set up the inputs/outputs so that we build the module from its umbrella
|
|
// header.
|
|
FrontendOptions &FrontendOpts = Invocation->getFrontendOpts();
|
|
FrontendOpts.OutputFile = ModuleFileName.str();
|
|
FrontendOpts.DisableFree = false;
|
|
FrontendOpts.Inputs.clear();
|
|
InputKind IK = getSourceInputKindFromOptions(*Invocation->getLangOpts());
|
|
|
|
// Get or create the module map that we'll use to build this module.
|
|
SmallString<128> TempModuleMapFileName;
|
|
if (const FileEntry *ModuleMapFile
|
|
= ModMap.getContainingModuleMapFile(Module)) {
|
|
// Use the module map where this module resides.
|
|
FrontendOpts.Inputs.push_back(FrontendInputFile(ModuleMapFile->getName(),
|
|
IK));
|
|
} else {
|
|
// Create a temporary module map file.
|
|
TempModuleMapFileName = Module->Name;
|
|
TempModuleMapFileName += "-%%%%%%%%.map";
|
|
int FD;
|
|
if (llvm::sys::fs::unique_file(TempModuleMapFileName.str(), FD,
|
|
TempModuleMapFileName,
|
|
/*makeAbsolute=*/true)
|
|
!= llvm::errc::success) {
|
|
ImportingInstance.getDiagnostics().Report(diag::err_module_map_temp_file)
|
|
<< TempModuleMapFileName;
|
|
return;
|
|
}
|
|
// Print the module map to this file.
|
|
llvm::raw_fd_ostream OS(FD, /*shouldClose=*/true);
|
|
Module->print(OS);
|
|
FrontendOpts.Inputs.push_back(
|
|
FrontendInputFile(TempModuleMapFileName.str().str(), IK));
|
|
}
|
|
|
|
// Don't free the remapped file buffers; they are owned by our caller.
|
|
PPOpts.RetainRemappedFileBuffers = true;
|
|
|
|
Invocation->getDiagnosticOpts().VerifyDiagnostics = 0;
|
|
assert(ImportingInstance.getInvocation().getModuleHash() ==
|
|
Invocation->getModuleHash() && "Module hash mismatch!");
|
|
|
|
// Construct a compiler instance that will be used to actually create the
|
|
// module.
|
|
CompilerInstance Instance;
|
|
Instance.setInvocation(&*Invocation);
|
|
Instance.createDiagnostics(/*argc=*/0, /*argv=*/0,
|
|
&ImportingInstance.getDiagnosticClient(),
|
|
/*ShouldOwnClient=*/true,
|
|
/*ShouldCloneClient=*/true);
|
|
|
|
// Construct a module-generating action.
|
|
GenerateModuleAction CreateModuleAction;
|
|
|
|
// Execute the action to actually build the module in-place. Use a separate
|
|
// thread so that we get a stack large enough.
|
|
const unsigned ThreadStackSize = 8 << 20;
|
|
llvm::CrashRecoveryContext CRC;
|
|
CompileModuleMapData Data = { Instance, CreateModuleAction };
|
|
CRC.RunSafelyOnThread(&doCompileMapModule, &Data, ThreadStackSize);
|
|
|
|
// Delete the temporary module map file.
|
|
// FIXME: Even though we're executing under crash protection, it would still
|
|
// be nice to do this with RemoveFileOnSignal when we can. However, that
|
|
// doesn't make sense for all clients, so clean this up manually.
|
|
if (!TempModuleMapFileName.empty())
|
|
llvm::sys::Path(TempModuleMapFileName).eraseFromDisk();
|
|
}
|
|
|
|
Module *CompilerInstance::loadModule(SourceLocation ImportLoc,
|
|
ModuleIdPath Path,
|
|
Module::NameVisibilityKind Visibility,
|
|
bool IsInclusionDirective) {
|
|
// If we've already handled this import, just return the cached result.
|
|
// This one-element cache is important to eliminate redundant diagnostics
|
|
// when both the preprocessor and parser see the same import declaration.
|
|
if (!ImportLoc.isInvalid() && LastModuleImportLoc == ImportLoc) {
|
|
// Make the named module visible.
|
|
if (LastModuleImportResult)
|
|
ModuleManager->makeModuleVisible(LastModuleImportResult, Visibility);
|
|
return LastModuleImportResult;
|
|
}
|
|
|
|
// Determine what file we're searching from.
|
|
StringRef ModuleName = Path[0].first->getName();
|
|
SourceLocation ModuleNameLoc = Path[0].second;
|
|
|
|
clang::Module *Module = 0;
|
|
|
|
// If we don't already have information on this module, load the module now.
|
|
llvm::DenseMap<const IdentifierInfo *, clang::Module *>::iterator Known
|
|
= KnownModules.find(Path[0].first);
|
|
if (Known != KnownModules.end()) {
|
|
// Retrieve the cached top-level module.
|
|
Module = Known->second;
|
|
} else if (ModuleName == getLangOpts().CurrentModule) {
|
|
// This is the module we're building.
|
|
Module = PP->getHeaderSearchInfo().getModuleMap().findModule(ModuleName);
|
|
Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first;
|
|
} else {
|
|
// Search for a module with the given name.
|
|
Module = PP->getHeaderSearchInfo().lookupModule(ModuleName);
|
|
std::string ModuleFileName;
|
|
if (Module)
|
|
ModuleFileName = PP->getHeaderSearchInfo().getModuleFileName(Module);
|
|
else
|
|
ModuleFileName = PP->getHeaderSearchInfo().getModuleFileName(ModuleName);
|
|
|
|
if (ModuleFileName.empty()) {
|
|
getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_found)
|
|
<< ModuleName
|
|
<< SourceRange(ImportLoc, ModuleNameLoc);
|
|
LastModuleImportLoc = ImportLoc;
|
|
LastModuleImportResult = 0;
|
|
return 0;
|
|
}
|
|
|
|
const FileEntry *ModuleFile
|
|
= getFileManager().getFile(ModuleFileName, /*OpenFile=*/false,
|
|
/*CacheFailure=*/false);
|
|
bool BuildingModule = false;
|
|
if (!ModuleFile && Module) {
|
|
// The module is not cached, but we have a module map from which we can
|
|
// build the module.
|
|
|
|
// Check whether there is a cycle in the module graph.
|
|
SmallVectorImpl<std::string> &ModuleBuildPath
|
|
= getPreprocessorOpts().ModuleBuildPath;
|
|
SmallVectorImpl<std::string>::iterator Pos
|
|
= std::find(ModuleBuildPath.begin(), ModuleBuildPath.end(), ModuleName);
|
|
if (Pos != ModuleBuildPath.end()) {
|
|
SmallString<256> CyclePath;
|
|
for (; Pos != ModuleBuildPath.end(); ++Pos) {
|
|
CyclePath += *Pos;
|
|
CyclePath += " -> ";
|
|
}
|
|
CyclePath += ModuleName;
|
|
|
|
getDiagnostics().Report(ModuleNameLoc, diag::err_module_cycle)
|
|
<< ModuleName << CyclePath;
|
|
return 0;
|
|
}
|
|
|
|
getDiagnostics().Report(ModuleNameLoc, diag::warn_module_build)
|
|
<< ModuleName;
|
|
BuildingModule = true;
|
|
compileModule(*this, Module, ModuleFileName);
|
|
ModuleFile = FileMgr->getFile(ModuleFileName);
|
|
}
|
|
|
|
if (!ModuleFile) {
|
|
getDiagnostics().Report(ModuleNameLoc,
|
|
BuildingModule? diag::err_module_not_built
|
|
: diag::err_module_not_found)
|
|
<< ModuleName
|
|
<< SourceRange(ImportLoc, ModuleNameLoc);
|
|
return 0;
|
|
}
|
|
|
|
// If we don't already have an ASTReader, create one now.
|
|
if (!ModuleManager) {
|
|
if (!hasASTContext())
|
|
createASTContext();
|
|
|
|
std::string Sysroot = getHeaderSearchOpts().Sysroot;
|
|
const PreprocessorOptions &PPOpts = getPreprocessorOpts();
|
|
ModuleManager = new ASTReader(getPreprocessor(), *Context,
|
|
Sysroot.empty() ? "" : Sysroot.c_str(),
|
|
PPOpts.DisablePCHValidation,
|
|
PPOpts.DisableStatCache);
|
|
if (hasASTConsumer()) {
|
|
ModuleManager->setDeserializationListener(
|
|
getASTConsumer().GetASTDeserializationListener());
|
|
getASTContext().setASTMutationListener(
|
|
getASTConsumer().GetASTMutationListener());
|
|
}
|
|
OwningPtr<ExternalASTSource> Source;
|
|
Source.reset(ModuleManager);
|
|
getASTContext().setExternalSource(Source);
|
|
if (hasSema())
|
|
ModuleManager->InitializeSema(getSema());
|
|
if (hasASTConsumer())
|
|
ModuleManager->StartTranslationUnit(&getASTConsumer());
|
|
}
|
|
|
|
// Try to load the module we found.
|
|
switch (ModuleManager->ReadAST(ModuleFile->getName(),
|
|
serialization::MK_Module)) {
|
|
case ASTReader::Success:
|
|
break;
|
|
|
|
case ASTReader::IgnorePCH:
|
|
// FIXME: The ASTReader will already have complained, but can we showhorn
|
|
// that diagnostic information into a more useful form?
|
|
KnownModules[Path[0].first] = 0;
|
|
return 0;
|
|
|
|
case ASTReader::Failure:
|
|
// Already complained, but note now that we failed.
|
|
KnownModules[Path[0].first] = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (!Module) {
|
|
// If we loaded the module directly, without finding a module map first,
|
|
// we'll have loaded the module's information from the module itself.
|
|
Module = PP->getHeaderSearchInfo().getModuleMap()
|
|
.findModule((Path[0].first->getName()));
|
|
}
|
|
|
|
// Cache the result of this top-level module lookup for later.
|
|
Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first;
|
|
}
|
|
|
|
// If we never found the module, fail.
|
|
if (!Module)
|
|
return 0;
|
|
|
|
// Verify that the rest of the module path actually corresponds to
|
|
// a submodule.
|
|
if (Path.size() > 1) {
|
|
for (unsigned I = 1, N = Path.size(); I != N; ++I) {
|
|
StringRef Name = Path[I].first->getName();
|
|
clang::Module *Sub = Module->findSubmodule(Name);
|
|
|
|
if (!Sub) {
|
|
// Attempt to perform typo correction to find a module name that works.
|
|
llvm::SmallVector<StringRef, 2> Best;
|
|
unsigned BestEditDistance = (std::numeric_limits<unsigned>::max)();
|
|
|
|
for (clang::Module::submodule_iterator J = Module->submodule_begin(),
|
|
JEnd = Module->submodule_end();
|
|
J != JEnd; ++J) {
|
|
unsigned ED = Name.edit_distance((*J)->Name,
|
|
/*AllowReplacements=*/true,
|
|
BestEditDistance);
|
|
if (ED <= BestEditDistance) {
|
|
if (ED < BestEditDistance) {
|
|
Best.clear();
|
|
BestEditDistance = ED;
|
|
}
|
|
|
|
Best.push_back((*J)->Name);
|
|
}
|
|
}
|
|
|
|
// If there was a clear winner, user it.
|
|
if (Best.size() == 1) {
|
|
getDiagnostics().Report(Path[I].second,
|
|
diag::err_no_submodule_suggest)
|
|
<< Path[I].first << Module->getFullModuleName() << Best[0]
|
|
<< SourceRange(Path[0].second, Path[I-1].second)
|
|
<< FixItHint::CreateReplacement(SourceRange(Path[I].second),
|
|
Best[0]);
|
|
|
|
Sub = Module->findSubmodule(Best[0]);
|
|
}
|
|
}
|
|
|
|
if (!Sub) {
|
|
// No submodule by this name. Complain, and don't look for further
|
|
// submodules.
|
|
getDiagnostics().Report(Path[I].second, diag::err_no_submodule)
|
|
<< Path[I].first << Module->getFullModuleName()
|
|
<< SourceRange(Path[0].second, Path[I-1].second);
|
|
break;
|
|
}
|
|
|
|
Module = Sub;
|
|
}
|
|
}
|
|
|
|
// Make the named module visible, if it's not already part of the module
|
|
// we are parsing.
|
|
if (ModuleName != getLangOpts().CurrentModule) {
|
|
if (!Module->IsFromModuleFile) {
|
|
// We have an umbrella header or directory that doesn't actually include
|
|
// all of the headers within the directory it covers. Complain about
|
|
// this missing submodule and recover by forgetting that we ever saw
|
|
// this submodule.
|
|
// FIXME: Should we detect this at module load time? It seems fairly
|
|
// expensive (and rare).
|
|
getDiagnostics().Report(ImportLoc, diag::warn_missing_submodule)
|
|
<< Module->getFullModuleName()
|
|
<< SourceRange(Path.front().second, Path.back().second);
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Check whether this module is available.
|
|
StringRef Feature;
|
|
if (!Module->isAvailable(getLangOpts(), getTarget(), Feature)) {
|
|
getDiagnostics().Report(ImportLoc, diag::err_module_unavailable)
|
|
<< Module->getFullModuleName()
|
|
<< Feature
|
|
<< SourceRange(Path.front().second, Path.back().second);
|
|
LastModuleImportLoc = ImportLoc;
|
|
LastModuleImportResult = 0;
|
|
return 0;
|
|
}
|
|
|
|
ModuleManager->makeModuleVisible(Module, Visibility);
|
|
}
|
|
|
|
// If this module import was due to an inclusion directive, create an
|
|
// implicit import declaration to capture it in the AST.
|
|
if (IsInclusionDirective && hasASTContext()) {
|
|
TranslationUnitDecl *TU = getASTContext().getTranslationUnitDecl();
|
|
TU->addDecl(ImportDecl::CreateImplicit(getASTContext(), TU,
|
|
ImportLoc, Module,
|
|
Path.back().second));
|
|
}
|
|
|
|
LastModuleImportLoc = ImportLoc;
|
|
LastModuleImportResult = Module;
|
|
return Module;
|
|
}
|