mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
017ee7bf04
We were not using the primary benefits of an intrusive list, namely the ability to insert or remove from the middle of the list, so let's switch to a plain vector. This also avoids linked-list pointer chasing.
1070 lines
40 KiB
C++
1070 lines
40 KiB
C++
//===--- Frontend.cpp - frontend utility methods --------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains utility methods for parsing and performing semantic
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// on modules.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Frontend/Frontend.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/DiagnosticsFrontend.h"
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#include "swift/AST/DiagnosticsSema.h"
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#include "swift/AST/FileSystem.h"
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#include "swift/AST/IncrementalRanges.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/TypeCheckRequests.h"
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#include "swift/Basic/FileTypes.h"
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#include "swift/Basic/SourceManager.h"
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#include "swift/Basic/Statistic.h"
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#include "swift/Frontend/ModuleInterfaceLoader.h"
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#include "swift/Parse/Lexer.h"
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#include "swift/SIL/SILModule.h"
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#include "swift/SILOptimizer/PassManager/Passes.h"
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#include "swift/SILOptimizer/Utils/Generics.h"
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#include "swift/Serialization/SerializationOptions.h"
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#include "swift/Serialization/SerializedModuleLoader.h"
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#include "swift/Strings.h"
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#include "swift/Subsystems.h"
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#include "clang/AST/ASTContext.h"
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#include "llvm/ADT/Hashing.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Process.h"
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using namespace swift;
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CompilerInstance::CompilerInstance() = default;
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CompilerInstance::~CompilerInstance() = default;
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std::string CompilerInvocation::getPCHHash() const {
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using llvm::hash_combine;
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auto Code = hash_combine(LangOpts.getPCHHashComponents(),
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FrontendOpts.getPCHHashComponents(),
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ClangImporterOpts.getPCHHashComponents(),
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SearchPathOpts.getPCHHashComponents(),
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DiagnosticOpts.getPCHHashComponents(),
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SILOpts.getPCHHashComponents(),
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IRGenOpts.getPCHHashComponents());
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return llvm::APInt(64, Code).toString(36, /*Signed=*/false);
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}
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const PrimarySpecificPaths &
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CompilerInvocation::getPrimarySpecificPathsForAtMostOnePrimary() const {
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return getFrontendOptions().getPrimarySpecificPathsForAtMostOnePrimary();
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}
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const PrimarySpecificPaths &
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CompilerInvocation::getPrimarySpecificPathsForPrimary(
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StringRef filename) const {
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return getFrontendOptions().getPrimarySpecificPathsForPrimary(filename);
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}
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const PrimarySpecificPaths &
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CompilerInvocation::getPrimarySpecificPathsForSourceFile(
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const SourceFile &SF) const {
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return getPrimarySpecificPathsForPrimary(SF.getFilename());
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}
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std::string CompilerInvocation::getOutputFilenameForAtMostOnePrimary() const {
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return getPrimarySpecificPathsForAtMostOnePrimary().OutputFilename;
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}
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std::string
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CompilerInvocation::getMainInputFilenameForDebugInfoForAtMostOnePrimary()
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const {
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.MainInputFilenameForDebugInfo;
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}
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std::string
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CompilerInvocation::getObjCHeaderOutputPathForAtMostOnePrimary() const {
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.ObjCHeaderOutputPath;
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}
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std::string CompilerInvocation::getModuleOutputPathForAtMostOnePrimary() const {
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.ModuleOutputPath;
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}
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std::string CompilerInvocation::getReferenceDependenciesFilePathForPrimary(
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StringRef filename) const {
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return getPrimarySpecificPathsForPrimary(filename)
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.SupplementaryOutputs.ReferenceDependenciesFilePath;
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}
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std::string
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CompilerInvocation::getSwiftRangesFilePathForPrimary(StringRef filename) const {
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return getPrimarySpecificPathsForPrimary(filename)
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.SupplementaryOutputs.SwiftRangesFilePath;
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}
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std::string CompilerInvocation::getCompiledSourceFilePathForPrimary(
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StringRef filename) const {
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return getPrimarySpecificPathsForPrimary(filename)
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.SupplementaryOutputs.CompiledSourceFilePath;
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}
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std::string
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CompilerInvocation::getSerializedDiagnosticsPathForAtMostOnePrimary() const {
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.SerializedDiagnosticsPath;
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}
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std::string CompilerInvocation::getTBDPathForWholeModule() const {
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assert(getFrontendOptions().InputsAndOutputs.isWholeModule() &&
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"TBDPath only makes sense when the whole module can be seen");
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.TBDPath;
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}
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std::string
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CompilerInvocation::getLdAddCFileOutputPathForWholeModule() const {
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assert(getFrontendOptions().InputsAndOutputs.isWholeModule() &&
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"LdAdd cfile only makes sense when the whole module can be seen");
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.LdAddCFilePath;
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}
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std::string
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CompilerInvocation::getModuleInterfaceOutputPathForWholeModule() const {
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assert(getFrontendOptions().InputsAndOutputs.isWholeModule() &&
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"ModuleInterfaceOutputPath only makes sense when the whole module "
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"can be seen");
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.ModuleInterfaceOutputPath;
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}
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std::string
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CompilerInvocation::getPrivateModuleInterfaceOutputPathForWholeModule() const {
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assert(getFrontendOptions().InputsAndOutputs.isWholeModule() &&
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"PrivateModuleInterfaceOutputPath only makes sense when the whole "
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"module can be seen");
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return getPrimarySpecificPathsForAtMostOnePrimary()
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.SupplementaryOutputs.PrivateModuleInterfaceOutputPath;
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}
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SerializationOptions CompilerInvocation::computeSerializationOptions(
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const SupplementaryOutputPaths &outs, const ModuleDecl *module) const {
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const FrontendOptions &opts = getFrontendOptions();
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SerializationOptions serializationOpts;
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serializationOpts.OutputPath = outs.ModuleOutputPath.c_str();
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serializationOpts.DocOutputPath = outs.ModuleDocOutputPath.c_str();
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serializationOpts.SourceInfoOutputPath = outs.ModuleSourceInfoOutputPath.c_str();
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serializationOpts.GroupInfoPath = opts.GroupInfoPath.c_str();
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if (opts.SerializeBridgingHeader && !outs.ModuleOutputPath.empty())
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serializationOpts.ImportedHeader = opts.ImplicitObjCHeaderPath;
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serializationOpts.ModuleLinkName = opts.ModuleLinkName;
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serializationOpts.ExtraClangOptions = getClangImporterOptions().ExtraArgs;
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if (!getIRGenOptions().ForceLoadSymbolName.empty())
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serializationOpts.AutolinkForceLoad = true;
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// Options contain information about the developer's computer,
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// so only serialize them if the module isn't going to be shipped to
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// the public.
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serializationOpts.SerializeOptionsForDebugging =
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opts.SerializeOptionsForDebugging.getValueOr(
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!isModuleExternallyConsumed(module));
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return serializationOpts;
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}
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Lowering::TypeConverter &CompilerInstance::getSILTypes() {
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if (auto *tc = TheSILTypes.get())
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return *tc;
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auto *tc = new Lowering::TypeConverter(*getMainModule());
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TheSILTypes.reset(tc);
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return *tc;
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}
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void CompilerInstance::recordPrimaryInputBuffer(unsigned BufID) {
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PrimaryBufferIDs.insert(BufID);
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}
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bool CompilerInstance::setUpASTContextIfNeeded() {
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if (Invocation.getFrontendOptions().RequestedAction ==
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FrontendOptions::ActionType::CompileModuleFromInterface) {
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// Compiling a module interface from source uses its own CompilerInstance
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// with options read from the input file. Don't bother setting up an
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// ASTContext at this level.
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return false;
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}
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Context.reset(ASTContext::get(
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Invocation.getLangOptions(), Invocation.getTypeCheckerOptions(),
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Invocation.getSearchPathOptions(), SourceMgr, Diagnostics));
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registerParseRequestFunctions(Context->evaluator);
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registerTypeCheckerRequestFunctions(Context->evaluator);
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registerSILGenRequestFunctions(Context->evaluator);
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registerSILOptimizerRequestFunctions(Context->evaluator);
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registerTBDGenRequestFunctions(Context->evaluator);
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registerIRGenRequestFunctions(Context->evaluator);
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// Migrator, indexing and typo correction need some IDE requests.
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// The integrated REPL needs IDE requests for completion.
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if (Invocation.getMigratorOptions().shouldRunMigrator() ||
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!Invocation.getFrontendOptions().IndexStorePath.empty() ||
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Invocation.getLangOptions().TypoCorrectionLimit ||
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Invocation.getFrontendOptions().RequestedAction ==
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FrontendOptions::ActionType::REPL) {
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registerIDERequestFunctions(Context->evaluator);
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}
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registerIRGenSILTransforms(*Context);
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if (setUpModuleLoaders())
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return true;
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return false;
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}
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void CompilerInstance::setupStatsReporter() {
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const auto &Invok = getInvocation();
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const std::string &StatsOutputDir =
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Invok.getFrontendOptions().StatsOutputDir;
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if (StatsOutputDir.empty())
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return;
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auto silOptModeArgStr = [](OptimizationMode mode) -> StringRef {
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switch (mode) {
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case OptimizationMode::ForSpeed:
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return "O";
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case OptimizationMode::ForSize:
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return "Osize";
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default:
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return "Onone";
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}
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};
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auto getClangSourceManager = [](ASTContext &Ctx) -> clang::SourceManager * {
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if (auto *clangImporter = static_cast<ClangImporter *>(
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Ctx.getClangModuleLoader())) {
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return &clangImporter->getClangASTContext().getSourceManager();
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}
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return nullptr;
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};
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const auto &FEOpts = Invok.getFrontendOptions();
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const auto &LangOpts = Invok.getLangOptions();
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const auto &SILOpts = Invok.getSILOptions();
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const std::string &OutFile =
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FEOpts.InputsAndOutputs.lastInputProducingOutput().outputFilename();
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auto Reporter = std::make_unique<UnifiedStatsReporter>(
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"swift-frontend",
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FEOpts.ModuleName,
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FEOpts.InputsAndOutputs.getStatsFileMangledInputName(),
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LangOpts.Target.normalize(),
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llvm::sys::path::extension(OutFile),
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silOptModeArgStr(SILOpts.OptMode),
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StatsOutputDir,
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&getSourceMgr(),
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getClangSourceManager(getASTContext()),
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Invok.getFrontendOptions().TraceStats,
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Invok.getFrontendOptions().ProfileEvents,
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Invok.getFrontendOptions().ProfileEntities);
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// Hand the stats reporter down to the ASTContext so the rest of the compiler
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// can use it.
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getASTContext().setStatsReporter(Reporter.get());
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Stats = std::move(Reporter);
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}
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void CompilerInstance::setupDiagnosticVerifierIfNeeded() {
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auto &diagOpts = Invocation.getDiagnosticOptions();
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if (diagOpts.VerifyMode != DiagnosticOptions::NoVerify) {
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DiagVerifier = std::make_unique<DiagnosticVerifier>(
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SourceMgr, InputSourceCodeBufferIDs,
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diagOpts.VerifyMode == DiagnosticOptions::VerifyAndApplyFixes,
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diagOpts.VerifyIgnoreUnknown);
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addDiagnosticConsumer(DiagVerifier.get());
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}
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}
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bool CompilerInstance::setup(const CompilerInvocation &Invok) {
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Invocation = Invok;
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// If initializing the overlay file system fails there's no sense in
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// continuing because the compiler will read the wrong files.
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if (setUpVirtualFileSystemOverlays())
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return true;
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setUpLLVMArguments();
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setUpDiagnosticOptions();
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assert(Lexer::isIdentifier(Invocation.getModuleName()));
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if (setUpInputs())
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return true;
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if (setUpASTContextIfNeeded())
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return true;
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setupStatsReporter();
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setupDiagnosticVerifierIfNeeded();
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return false;
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}
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static bool loadAndValidateVFSOverlay(
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const std::string &File,
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const llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> &BaseFS,
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const llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem> &OverlayFS,
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DiagnosticEngine &Diag) {
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auto Buffer = BaseFS->getBufferForFile(File);
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if (!Buffer) {
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Diag.diagnose(SourceLoc(), diag::cannot_open_file, File,
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Buffer.getError().message());
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return true;
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}
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auto VFS = llvm::vfs::getVFSFromYAML(std::move(Buffer.get()),
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nullptr, File);
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if (!VFS) {
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Diag.diagnose(SourceLoc(), diag::invalid_vfs_overlay_file, File);
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return true;
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}
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OverlayFS->pushOverlay(VFS);
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return false;
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}
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bool CompilerInstance::setUpVirtualFileSystemOverlays() {
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auto BaseFS = SourceMgr.getFileSystem();
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auto OverlayFS = llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem>(
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new llvm::vfs::OverlayFileSystem(BaseFS));
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bool hadAnyFailure = false;
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bool hasOverlays = false;
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for (const auto &File : Invocation.getSearchPathOptions().VFSOverlayFiles) {
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hasOverlays = true;
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hadAnyFailure |=
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loadAndValidateVFSOverlay(File, BaseFS, OverlayFS, Diagnostics);
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}
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// If we successfully loaded all the overlays, let the source manager and
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// diagnostic engine take advantage of the overlay file system.
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if (!hadAnyFailure && hasOverlays) {
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SourceMgr.setFileSystem(OverlayFS);
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}
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return hadAnyFailure;
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}
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void CompilerInstance::setUpLLVMArguments() {
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// Honor -Xllvm.
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if (!Invocation.getFrontendOptions().LLVMArgs.empty()) {
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llvm::SmallVector<const char *, 4> Args;
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Args.push_back("swift (LLVM option parsing)");
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for (unsigned i = 0, e = Invocation.getFrontendOptions().LLVMArgs.size();
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i != e; ++i)
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Args.push_back(Invocation.getFrontendOptions().LLVMArgs[i].c_str());
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Args.push_back(nullptr);
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llvm::cl::ParseCommandLineOptions(Args.size()-1, Args.data());
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}
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}
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void CompilerInstance::setUpDiagnosticOptions() {
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if (Invocation.getDiagnosticOptions().ShowDiagnosticsAfterFatalError) {
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Diagnostics.setShowDiagnosticsAfterFatalError();
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}
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if (Invocation.getDiagnosticOptions().SuppressWarnings) {
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Diagnostics.setSuppressWarnings(true);
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}
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if (Invocation.getDiagnosticOptions().WarningsAsErrors) {
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Diagnostics.setWarningsAsErrors(true);
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}
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if (Invocation.getDiagnosticOptions().PrintDiagnosticNames) {
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Diagnostics.setPrintDiagnosticNames(true);
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}
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Diagnostics.setDiagnosticDocumentationPath(
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Invocation.getDiagnosticOptions().DiagnosticDocumentationPath);
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}
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// The ordering of ModuleLoaders is important!
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//
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// 1. SourceLoader: This is a hack and only the compiler's tests are using it,
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// to avoid writing repetitive code involving generating modules/interfaces.
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// Ideally, we'd get rid of it.
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// 2. MemoryBufferSerializedModuleLoader: This is used by LLDB, because it might
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// already have the module available in memory.
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// 3. ModuleInterfaceLoader: Tries to find an up-to-date swiftmodule. If it
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// succeeds, it issues a particular "error" (see
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// [Note: ModuleInterfaceLoader-defer-to-SerializedModuleLoader]), which
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// is interpreted by the overarching loader as a command to use the
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// SerializedModuleLoader. If we failed to find a .swiftmodule, this falls
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// back to using an interface. Actual errors lead to diagnostics.
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// 4. SerializedModuleLoader: Loads a serialized module if it can.
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// 5. ClangImporter: This must come after all the Swift module loaders because
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// in the presence of overlays and mixed-source frameworks, we want to prefer
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// the overlay or framework module over the underlying Clang module.
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bool CompilerInstance::setUpModuleLoaders() {
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if (hasSourceImport()) {
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bool enableLibraryEvolution =
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Invocation.getFrontendOptions().EnableLibraryEvolution;
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Context->addModuleLoader(SourceLoader::create(*Context,
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enableLibraryEvolution,
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getDependencyTracker()));
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}
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auto MLM = ModuleLoadingMode::PreferSerialized;
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if (auto forceModuleLoadingMode =
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llvm::sys::Process::GetEnv("SWIFT_FORCE_MODULE_LOADING")) {
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if (*forceModuleLoadingMode == "prefer-interface" ||
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*forceModuleLoadingMode == "prefer-parseable")
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MLM = ModuleLoadingMode::PreferInterface;
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else if (*forceModuleLoadingMode == "prefer-serialized")
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MLM = ModuleLoadingMode::PreferSerialized;
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else if (*forceModuleLoadingMode == "only-interface" ||
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*forceModuleLoadingMode == "only-parseable")
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MLM = ModuleLoadingMode::OnlyInterface;
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else if (*forceModuleLoadingMode == "only-serialized")
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MLM = ModuleLoadingMode::OnlySerialized;
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else {
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Diagnostics.diagnose(SourceLoc(),
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diag::unknown_forced_module_loading_mode,
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*forceModuleLoadingMode);
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return true;
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}
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}
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auto IgnoreSourceInfoFile =
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Invocation.getFrontendOptions().IgnoreSwiftSourceInfo;
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if (Invocation.getLangOptions().EnableMemoryBufferImporter) {
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auto MemoryBufferLoader = MemoryBufferSerializedModuleLoader::create(
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*Context, getDependencyTracker(), MLM, IgnoreSourceInfoFile);
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this->MemoryBufferLoader = MemoryBufferLoader.get();
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Context->addModuleLoader(std::move(MemoryBufferLoader));
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}
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// Wire up the Clang importer. If the user has specified an SDK, use it.
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// Otherwise, we just keep it around as our interface to Clang's ABI
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// knowledge.
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std::unique_ptr<ClangImporter> clangImporter =
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ClangImporter::create(*Context, Invocation.getClangImporterOptions(),
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Invocation.getPCHHash(), getDependencyTracker());
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if (!clangImporter) {
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Diagnostics.diagnose(SourceLoc(), diag::error_clang_importer_create_fail);
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return true;
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}
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// If implicit modules are disabled, we need to install an explicit module
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// loader.
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if (Invocation.getFrontendOptions().DisableImplicitModules) {
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auto ESML = ExplicitSwiftModuleLoader::create(
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*Context,
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getDependencyTracker(), MLM,
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Invocation.getSearchPathOptions().ExplicitSwiftModules,
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IgnoreSourceInfoFile);
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Context->addModuleLoader(std::move(ESML));
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}
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if (MLM != ModuleLoadingMode::OnlySerialized) {
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auto const &Clang = clangImporter->getClangInstance();
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std::string ModuleCachePath = getModuleCachePathFromClang(Clang);
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auto &FEOpts = Invocation.getFrontendOptions();
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StringRef PrebuiltModuleCachePath = FEOpts.PrebuiltModuleCachePath;
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ModuleInterfaceLoaderOptions LoaderOpts(FEOpts);
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auto PIML = ModuleInterfaceLoader::create(
|
|
*Context, ModuleCachePath, PrebuiltModuleCachePath,
|
|
getDependencyTracker(), MLM, FEOpts.PreferInterfaceForModules,
|
|
LoaderOpts,
|
|
IgnoreSourceInfoFile);
|
|
Context->addModuleLoader(std::move(PIML));
|
|
}
|
|
|
|
std::unique_ptr<SerializedModuleLoader> SML =
|
|
SerializedModuleLoader::create(*Context, getDependencyTracker(), MLM,
|
|
IgnoreSourceInfoFile);
|
|
this->SML = SML.get();
|
|
Context->addModuleLoader(std::move(SML));
|
|
|
|
Context->addModuleLoader(std::move(clangImporter), /*isClang*/ true);
|
|
|
|
return false;
|
|
}
|
|
|
|
Optional<unsigned> CompilerInstance::setUpCodeCompletionBuffer() {
|
|
Optional<unsigned> codeCompletionBufferID;
|
|
auto codeCompletePoint = Invocation.getCodeCompletionPoint();
|
|
if (codeCompletePoint.first) {
|
|
auto memBuf = codeCompletePoint.first;
|
|
// CompilerInvocation doesn't own the buffers, copy to a new buffer.
|
|
codeCompletionBufferID = SourceMgr.addMemBufferCopy(memBuf);
|
|
InputSourceCodeBufferIDs.push_back(*codeCompletionBufferID);
|
|
SourceMgr.setCodeCompletionPoint(*codeCompletionBufferID,
|
|
codeCompletePoint.second);
|
|
}
|
|
return codeCompletionBufferID;
|
|
}
|
|
|
|
SourceFile *CompilerInstance::getCodeCompletionFile() const {
|
|
auto *mod = getMainModule();
|
|
auto &eval = mod->getASTContext().evaluator;
|
|
return evaluateOrDefault(eval, CodeCompletionFileRequest{mod}, nullptr);
|
|
}
|
|
|
|
static bool shouldTreatSingleInputAsMain(InputFileKind inputKind) {
|
|
switch (inputKind) {
|
|
case InputFileKind::Swift:
|
|
case InputFileKind::SwiftModuleInterface:
|
|
case InputFileKind::SIL:
|
|
return true;
|
|
case InputFileKind::SwiftLibrary:
|
|
case InputFileKind::LLVM:
|
|
case InputFileKind::None:
|
|
return false;
|
|
}
|
|
llvm_unreachable("unhandled input kind");
|
|
}
|
|
|
|
bool CompilerInstance::setUpInputs() {
|
|
// Adds to InputSourceCodeBufferIDs, so may need to happen before the
|
|
// per-input setup.
|
|
const Optional<unsigned> codeCompletionBufferID = setUpCodeCompletionBuffer();
|
|
|
|
for (const InputFile &input :
|
|
Invocation.getFrontendOptions().InputsAndOutputs.getAllInputs())
|
|
if (setUpForInput(input))
|
|
return true;
|
|
|
|
// Set the primary file to the code-completion point if one exists.
|
|
if (codeCompletionBufferID.hasValue() &&
|
|
!isPrimaryInput(*codeCompletionBufferID)) {
|
|
assert(PrimaryBufferIDs.empty() && "re-setting PrimaryBufferID");
|
|
recordPrimaryInputBuffer(*codeCompletionBufferID);
|
|
}
|
|
|
|
if (MainBufferID == NO_SUCH_BUFFER &&
|
|
InputSourceCodeBufferIDs.size() == 1 &&
|
|
shouldTreatSingleInputAsMain(Invocation.getInputKind())) {
|
|
MainBufferID = InputSourceCodeBufferIDs.front();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CompilerInstance::setUpForInput(const InputFile &input) {
|
|
bool failed = false;
|
|
Optional<unsigned> bufferID = getRecordedBufferID(input, failed);
|
|
if (failed)
|
|
return true;
|
|
if (!bufferID)
|
|
return false;
|
|
|
|
if (isInputSwift() &&
|
|
llvm::sys::path::filename(input.file()) == "main.swift") {
|
|
assert(MainBufferID == NO_SUCH_BUFFER && "re-setting MainBufferID");
|
|
MainBufferID = *bufferID;
|
|
}
|
|
|
|
if (input.isPrimary()) {
|
|
recordPrimaryInputBuffer(*bufferID);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Optional<unsigned> CompilerInstance::getRecordedBufferID(const InputFile &input,
|
|
bool &failed) {
|
|
if (!input.buffer()) {
|
|
if (Optional<unsigned> existingBufferID =
|
|
SourceMgr.getIDForBufferIdentifier(input.file())) {
|
|
return existingBufferID;
|
|
}
|
|
}
|
|
auto buffers = getInputBuffersIfPresent(input);
|
|
|
|
if (!buffers.hasValue()) {
|
|
failed = true;
|
|
return None;
|
|
}
|
|
|
|
// FIXME: The fact that this test happens twice, for some cases,
|
|
// suggests that setupInputs could use another round of refactoring.
|
|
if (serialization::isSerializedAST(buffers->ModuleBuffer->getBuffer())) {
|
|
PartialModules.push_back(std::move(*buffers));
|
|
return None;
|
|
}
|
|
assert(buffers->ModuleDocBuffer.get() == nullptr);
|
|
assert(buffers->ModuleSourceInfoBuffer.get() == nullptr);
|
|
// Transfer ownership of the MemoryBuffer to the SourceMgr.
|
|
unsigned bufferID = SourceMgr.addNewSourceBuffer(std::move(buffers->ModuleBuffer));
|
|
|
|
InputSourceCodeBufferIDs.push_back(bufferID);
|
|
return bufferID;
|
|
}
|
|
|
|
Optional<ModuleBuffers> CompilerInstance::getInputBuffersIfPresent(
|
|
const InputFile &input) {
|
|
if (auto b = input.buffer()) {
|
|
return ModuleBuffers(llvm::MemoryBuffer::getMemBufferCopy(b->getBuffer(),
|
|
b->getBufferIdentifier()));
|
|
}
|
|
// FIXME: Working with filenames is fragile, maybe use the real path
|
|
// or have some kind of FileManager.
|
|
using FileOrError = llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>;
|
|
FileOrError inputFileOrErr = swift::vfs::getFileOrSTDIN(getFileSystem(),
|
|
input.file());
|
|
if (!inputFileOrErr) {
|
|
Diagnostics.diagnose(SourceLoc(), diag::error_open_input_file, input.file(),
|
|
inputFileOrErr.getError().message());
|
|
return None;
|
|
}
|
|
if (!serialization::isSerializedAST((*inputFileOrErr)->getBuffer()))
|
|
return ModuleBuffers(std::move(*inputFileOrErr));
|
|
|
|
auto swiftdoc = openModuleDoc(input);
|
|
auto sourceinfo = openModuleSourceInfo(input);
|
|
return ModuleBuffers(std::move(*inputFileOrErr),
|
|
swiftdoc.hasValue() ? std::move(swiftdoc.getValue()) : nullptr,
|
|
sourceinfo.hasValue() ? std::move(sourceinfo.getValue()) : nullptr);
|
|
}
|
|
|
|
Optional<std::unique_ptr<llvm::MemoryBuffer>>
|
|
CompilerInstance::openModuleSourceInfo(const InputFile &input) {
|
|
llvm::SmallString<128> pathWithoutProjectDir(input.file());
|
|
llvm::sys::path::replace_extension(pathWithoutProjectDir,
|
|
file_types::getExtension(file_types::TY_SwiftSourceInfoFile));
|
|
llvm::SmallString<128> pathWithProjectDir = pathWithoutProjectDir.str();
|
|
StringRef fileName = llvm::sys::path::filename(pathWithoutProjectDir);
|
|
llvm::sys::path::remove_filename(pathWithProjectDir);
|
|
llvm::sys::path::append(pathWithProjectDir, "Project");
|
|
llvm::sys::path::append(pathWithProjectDir, fileName);
|
|
if (auto sourceInfoFileOrErr = swift::vfs::getFileOrSTDIN(getFileSystem(),
|
|
pathWithProjectDir))
|
|
return std::move(*sourceInfoFileOrErr);
|
|
if (auto sourceInfoFileOrErr = swift::vfs::getFileOrSTDIN(getFileSystem(),
|
|
pathWithoutProjectDir))
|
|
return std::move(*sourceInfoFileOrErr);
|
|
return None;
|
|
}
|
|
|
|
Optional<std::unique_ptr<llvm::MemoryBuffer>>
|
|
CompilerInstance::openModuleDoc(const InputFile &input) {
|
|
llvm::SmallString<128> moduleDocFilePath(input.file());
|
|
llvm::sys::path::replace_extension(
|
|
moduleDocFilePath,
|
|
file_types::getExtension(file_types::TY_SwiftModuleDocFile));
|
|
using FileOrError = llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>;
|
|
FileOrError moduleDocFileOrErr =
|
|
swift::vfs::getFileOrSTDIN(getFileSystem(), moduleDocFilePath);
|
|
if (moduleDocFileOrErr)
|
|
return std::move(*moduleDocFileOrErr);
|
|
|
|
if (moduleDocFileOrErr.getError() == std::errc::no_such_file_or_directory)
|
|
return std::unique_ptr<llvm::MemoryBuffer>();
|
|
|
|
Diagnostics.diagnose(SourceLoc(), diag::error_open_input_file,
|
|
moduleDocFilePath,
|
|
moduleDocFileOrErr.getError().message());
|
|
return None;
|
|
}
|
|
|
|
/// Implicitly import the SwiftOnoneSupport module in non-optimized
|
|
/// builds. This allows for use of popular specialized functions
|
|
/// from the standard library, which makes the non-optimized builds
|
|
/// execute much faster.
|
|
bool CompilerInvocation::shouldImportSwiftONoneSupport() const {
|
|
if (getImplicitStdlibKind() != ImplicitStdlibKind::Stdlib)
|
|
return false;
|
|
if (getSILOptions().shouldOptimize())
|
|
return false;
|
|
|
|
// If we are not executing an action that has a dependency on
|
|
// SwiftOnoneSupport, don't load it.
|
|
//
|
|
// FIXME: Knowledge of SwiftOnoneSupport loading in the Frontend is a layering
|
|
// violation. However, SIL currently does not have a way to express this
|
|
// dependency itself for the benefit of autolinking. In the mean time, we
|
|
// will be conservative and say that actions like -emit-silgen and
|
|
// -emit-sibgen - that don't really involve the optimizer - have a
|
|
// strict dependency on SwiftOnoneSupport.
|
|
//
|
|
// This optimization is disabled by -track-system-dependencies to preserve
|
|
// the explicit dependency.
|
|
const auto &options = getFrontendOptions();
|
|
return options.TrackSystemDeps
|
|
|| FrontendOptions::doesActionGenerateSIL(options.RequestedAction);
|
|
}
|
|
|
|
ImplicitImportInfo CompilerInstance::getImplicitImportInfo() const {
|
|
auto &frontendOpts = Invocation.getFrontendOptions();
|
|
|
|
ImplicitImportInfo imports;
|
|
imports.StdlibKind = Invocation.getImplicitStdlibKind();
|
|
|
|
for (auto &moduleStr : frontendOpts.getImplicitImportModuleNames())
|
|
imports.ModuleNames.push_back(Context->getIdentifier(moduleStr));
|
|
|
|
if (Invocation.shouldImportSwiftONoneSupport())
|
|
imports.ModuleNames.push_back(Context->getIdentifier(SWIFT_ONONE_SUPPORT));
|
|
|
|
imports.ShouldImportUnderlyingModule = frontendOpts.ImportUnderlyingModule;
|
|
imports.BridgingHeaderPath = frontendOpts.ImplicitObjCHeaderPath;
|
|
return imports;
|
|
}
|
|
|
|
bool CompilerInstance::createFilesForMainModule(
|
|
ModuleDecl *mod, SmallVectorImpl<FileUnit *> &files) const {
|
|
// Make sure the main file is the first file in the module.
|
|
if (MainBufferID != NO_SUCH_BUFFER) {
|
|
auto *mainFile = createSourceFileForMainModule(
|
|
mod, Invocation.getSourceFileKind(), MainBufferID);
|
|
files.push_back(mainFile);
|
|
}
|
|
|
|
// If we have partial modules to load, do so now, bailing if any failed to
|
|
// load.
|
|
if (!PartialModules.empty()) {
|
|
if (loadPartialModulesAndImplicitImports(mod, files))
|
|
return true;
|
|
}
|
|
|
|
// Finally add the library files.
|
|
// FIXME: This is the only demand point for InputSourceCodeBufferIDs. We
|
|
// should compute this list of source files lazily.
|
|
for (auto BufferID : InputSourceCodeBufferIDs) {
|
|
// Skip the main buffer, we've already handled it.
|
|
if (BufferID == MainBufferID)
|
|
continue;
|
|
|
|
auto *libraryFile =
|
|
createSourceFileForMainModule(mod, SourceFileKind::Library, BufferID);
|
|
files.push_back(libraryFile);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
ModuleDecl *CompilerInstance::getMainModule() const {
|
|
if (!MainModule) {
|
|
Identifier ID = Context->getIdentifier(Invocation.getModuleName());
|
|
MainModule = ModuleDecl::createMainModule(*Context, ID,
|
|
getImplicitImportInfo());
|
|
if (Invocation.getFrontendOptions().EnableTesting)
|
|
MainModule->setTestingEnabled();
|
|
if (Invocation.getFrontendOptions().EnablePrivateImports)
|
|
MainModule->setPrivateImportsEnabled();
|
|
if (Invocation.getFrontendOptions().EnableImplicitDynamic)
|
|
MainModule->setImplicitDynamicEnabled();
|
|
|
|
if (Invocation.getFrontendOptions().EnableLibraryEvolution)
|
|
MainModule->setResilienceStrategy(ResilienceStrategy::Resilient);
|
|
|
|
Context->LoadedModules[MainModule->getName()] = MainModule;
|
|
|
|
// Create and add the module's files.
|
|
SmallVector<FileUnit *, 16> files;
|
|
if (!createFilesForMainModule(MainModule, files)) {
|
|
for (auto *file : files)
|
|
MainModule->addFile(*file);
|
|
} else {
|
|
// If we failed to load a partial module, mark the main module as having
|
|
// "failed to load", as it will contain no files. Note that we don't try
|
|
// to add any of the successfully loaded partial modules. This ensures
|
|
// that we don't encounter cases where we try to resolve a cross-reference
|
|
// into a partial module that failed to load.
|
|
MainModule->setFailedToLoad();
|
|
}
|
|
}
|
|
return MainModule;
|
|
}
|
|
|
|
void CompilerInstance::setMainModule(ModuleDecl *newMod) {
|
|
assert(newMod->isMainModule());
|
|
MainModule = newMod;
|
|
Context->LoadedModules[newMod->getName()] = newMod;
|
|
}
|
|
|
|
void CompilerInstance::performParseAndResolveImportsOnly() {
|
|
FrontendStatsTracer tracer(getStatsReporter(), "parse-and-resolve-imports");
|
|
|
|
// Resolve imports for all the source files.
|
|
auto *mainModule = getMainModule();
|
|
for (auto *file : mainModule->getFiles()) {
|
|
if (auto *SF = dyn_cast<SourceFile>(file))
|
|
performImportResolution(*SF);
|
|
}
|
|
|
|
assert(llvm::all_of(mainModule->getFiles(), [](const FileUnit *File) -> bool {
|
|
auto *SF = dyn_cast<SourceFile>(File);
|
|
if (!SF)
|
|
return true;
|
|
return SF->ASTStage >= SourceFile::ImportsResolved;
|
|
}) && "some files have not yet had their imports resolved");
|
|
mainModule->setHasResolvedImports();
|
|
|
|
bindExtensions(*mainModule);
|
|
}
|
|
|
|
void CompilerInstance::performSema() {
|
|
performParseAndResolveImportsOnly();
|
|
|
|
FrontendStatsTracer tracer(getStatsReporter(), "perform-sema");
|
|
|
|
forEachFileToTypeCheck([&](SourceFile &SF) {
|
|
performTypeChecking(SF);
|
|
});
|
|
|
|
finishTypeChecking();
|
|
}
|
|
|
|
bool CompilerInstance::loadStdlibIfNeeded() {
|
|
// If we aren't expecting an implicit stdlib import, there's nothing to do.
|
|
if (getImplicitImportInfo().StdlibKind != ImplicitStdlibKind::Stdlib)
|
|
return false;
|
|
|
|
FrontendStatsTracer tracer(getStatsReporter(), "load-stdlib");
|
|
ModuleDecl *M = Context->getStdlibModule(/*loadIfAbsent*/ true);
|
|
|
|
if (!M) {
|
|
Diagnostics.diagnose(SourceLoc(), diag::error_stdlib_not_found,
|
|
Invocation.getTargetTriple());
|
|
return true;
|
|
}
|
|
|
|
// If we failed to load, we should have already diagnosed.
|
|
if (M->failedToLoad()) {
|
|
assert(Diagnostics.hadAnyError() &&
|
|
"Module failed to load but nothing was diagnosed?");
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool CompilerInstance::loadPartialModulesAndImplicitImports(
|
|
ModuleDecl *mod, SmallVectorImpl<FileUnit *> &partialModules) const {
|
|
FrontendStatsTracer tracer(getStatsReporter(),
|
|
"load-partial-modules-and-implicit-imports");
|
|
// Force loading implicit imports. This is currently needed to allow
|
|
// deserialization to resolve cross references into bridging headers.
|
|
// FIXME: Once deserialization loads all the modules it needs for cross
|
|
// references, this can be removed.
|
|
(void)mod->getImplicitImports();
|
|
|
|
// Load in the partial modules.
|
|
bool hadLoadError = false;
|
|
for (auto &PM : PartialModules) {
|
|
assert(PM.ModuleBuffer);
|
|
auto *file =
|
|
SML->loadAST(*mod, /*diagLoc*/ SourceLoc(), /*moduleInterfacePath*/ "",
|
|
std::move(PM.ModuleBuffer), std::move(PM.ModuleDocBuffer),
|
|
std::move(PM.ModuleSourceInfoBuffer),
|
|
/*isFramework*/ false);
|
|
if (file) {
|
|
partialModules.push_back(file);
|
|
} else {
|
|
hadLoadError = true;
|
|
}
|
|
}
|
|
return hadLoadError;
|
|
}
|
|
|
|
void CompilerInstance::forEachFileToTypeCheck(
|
|
llvm::function_ref<void(SourceFile &)> fn) {
|
|
if (isWholeModuleCompilation()) {
|
|
for (auto fileName : getMainModule()->getFiles()) {
|
|
auto *SF = dyn_cast<SourceFile>(fileName);
|
|
if (!SF) {
|
|
continue;
|
|
}
|
|
fn(*SF);
|
|
}
|
|
} else {
|
|
for (auto *SF : getPrimarySourceFiles()) {
|
|
fn(*SF);
|
|
}
|
|
}
|
|
}
|
|
|
|
void CompilerInstance::finishTypeChecking() {
|
|
forEachFileToTypeCheck([](SourceFile &SF) {
|
|
performWholeModuleTypeChecking(SF);
|
|
});
|
|
}
|
|
|
|
SourceFile::ParsingOptions
|
|
CompilerInstance::getSourceFileParsingOptions(bool forPrimary) const {
|
|
const auto &frontendOpts = Invocation.getFrontendOptions();
|
|
const auto action = frontendOpts.RequestedAction;
|
|
|
|
auto opts = SourceFile::getDefaultParsingOptions(getASTContext().LangOpts);
|
|
if (FrontendOptions::shouldActionOnlyParse(action)) {
|
|
// Generally in a parse-only invocation, we want to disable #if evaluation.
|
|
// However, there are a couple of modes where we need to know which clauses
|
|
// are active.
|
|
if (action != FrontendOptions::ActionType::EmitImportedModules &&
|
|
action != FrontendOptions::ActionType::ScanDependencies) {
|
|
opts |= SourceFile::ParsingFlags::DisablePoundIfEvaluation;
|
|
}
|
|
|
|
// If we need to dump the parse tree, disable delayed bodies as we want to
|
|
// show everything.
|
|
if (action == FrontendOptions::ActionType::DumpParse)
|
|
opts |= SourceFile::ParsingFlags::DisableDelayedBodies;
|
|
}
|
|
|
|
if (forPrimary || isWholeModuleCompilation()) {
|
|
// Disable delayed body parsing for primaries and in WMO.
|
|
opts |= SourceFile::ParsingFlags::DisableDelayedBodies;
|
|
} else {
|
|
// Suppress parse warnings for non-primaries, as they'll get parsed multiple
|
|
// times.
|
|
opts |= SourceFile::ParsingFlags::SuppressWarnings;
|
|
}
|
|
|
|
// Enable interface hash computation for primaries, but not in WMO, as it's
|
|
// only currently needed for incremental mode.
|
|
if (forPrimary) {
|
|
opts |= SourceFile::ParsingFlags::EnableInterfaceHash;
|
|
}
|
|
return opts;
|
|
}
|
|
|
|
SourceFile *CompilerInstance::createSourceFileForMainModule(
|
|
ModuleDecl *mod, SourceFileKind fileKind,
|
|
Optional<unsigned> bufferID) const {
|
|
auto isPrimary = bufferID && isPrimaryInput(*bufferID);
|
|
auto opts = getSourceFileParsingOptions(isPrimary);
|
|
|
|
auto *inputFile = new (*Context)
|
|
SourceFile(*mod, fileKind, bufferID, opts, isPrimary);
|
|
|
|
if (bufferID == MainBufferID)
|
|
inputFile->SyntaxParsingCache = Invocation.getMainFileSyntaxParsingCache();
|
|
|
|
return inputFile;
|
|
}
|
|
|
|
void CompilerInstance::freeASTContext() {
|
|
TheSILTypes.reset();
|
|
Context.reset();
|
|
MainModule = nullptr;
|
|
SML = nullptr;
|
|
MemoryBufferLoader = nullptr;
|
|
PrimaryBufferIDs.clear();
|
|
}
|
|
|
|
/// Perform "stable" optimizations that are invariant across compiler versions.
|
|
static bool performMandatorySILPasses(CompilerInvocation &Invocation,
|
|
SILModule *SM) {
|
|
if (Invocation.getFrontendOptions().RequestedAction ==
|
|
FrontendOptions::ActionType::MergeModules) {
|
|
// Don't run diagnostic passes at all.
|
|
} else if (!Invocation.getDiagnosticOptions().SkipDiagnosticPasses) {
|
|
if (runSILDiagnosticPasses(*SM))
|
|
return true;
|
|
} else {
|
|
// Even if we are not supposed to run the diagnostic passes, we still need
|
|
// to run the ownership evaluator.
|
|
if (runSILOwnershipEliminatorPass(*SM))
|
|
return true;
|
|
}
|
|
|
|
if (Invocation.getSILOptions().MergePartialModules)
|
|
SM->linkAllFromCurrentModule();
|
|
return false;
|
|
}
|
|
|
|
/// Perform SIL optimization passes if optimizations haven't been disabled.
|
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/// These may change across compiler versions.
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static void performSILOptimizations(CompilerInvocation &Invocation,
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SILModule *SM) {
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FrontendStatsTracer tracer(SM->getASTContext().Stats,
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"SIL optimization");
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if (Invocation.getFrontendOptions().RequestedAction ==
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FrontendOptions::ActionType::MergeModules ||
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!Invocation.getSILOptions().shouldOptimize()) {
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runSILPassesForOnone(*SM);
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return;
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}
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StringRef CustomPipelinePath =
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Invocation.getSILOptions().ExternalPassPipelineFilename;
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if (!CustomPipelinePath.empty()) {
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runSILOptimizationPassesWithFileSpecification(*SM, CustomPipelinePath);
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} else {
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runSILOptimizationPasses(*SM);
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}
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// When building SwiftOnoneSupport.o verify all expected ABI symbols.
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if (Invocation.getFrontendOptions().CheckOnoneSupportCompleteness
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// TODO: handle non-ObjC based stdlib builds, e.g. on linux.
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&& Invocation.getLangOptions().EnableObjCInterop
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&& Invocation.getFrontendOptions().RequestedAction
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== FrontendOptions::ActionType::EmitObject) {
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checkCompletenessOfPrespecializations(*SM);
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}
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}
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static void countStatsPostSILOpt(UnifiedStatsReporter &Stats,
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const SILModule& Module) {
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auto &C = Stats.getFrontendCounters();
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// FIXME: calculate these in constant time, via the dense maps.
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C.NumSILOptFunctions += Module.getFunctionList().size();
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C.NumSILOptVtables += Module.getVTables().size();
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C.NumSILOptWitnessTables += Module.getWitnessTableList().size();
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C.NumSILOptDefaultWitnessTables += Module.getDefaultWitnessTableList().size();
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C.NumSILOptGlobalVariables += Module.getSILGlobalList().size();
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}
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bool CompilerInstance::performSILProcessing(SILModule *silModule) {
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if (performMandatorySILPasses(Invocation, silModule))
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return true;
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{
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FrontendStatsTracer tracer(silModule->getASTContext().Stats,
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|
"SIL verification, pre-optimization");
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silModule->verify();
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}
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performSILOptimizations(Invocation, silModule);
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if (auto *stats = getStatsReporter())
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countStatsPostSILOpt(*stats, *silModule);
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{
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FrontendStatsTracer tracer(silModule->getASTContext().Stats,
|
|
"SIL verification, post-optimization");
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silModule->verify();
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}
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performSILInstCountIfNeeded(silModule);
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return false;
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}
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const PrimarySpecificPaths &
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CompilerInstance::getPrimarySpecificPathsForWholeModuleOptimizationMode()
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const {
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return getPrimarySpecificPathsForAtMostOnePrimary();
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}
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const PrimarySpecificPaths &
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CompilerInstance::getPrimarySpecificPathsForAtMostOnePrimary() const {
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return Invocation.getPrimarySpecificPathsForAtMostOnePrimary();
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}
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const PrimarySpecificPaths &
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CompilerInstance::getPrimarySpecificPathsForPrimary(StringRef filename) const {
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return Invocation.getPrimarySpecificPathsForPrimary(filename);
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}
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const PrimarySpecificPaths &
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CompilerInstance::getPrimarySpecificPathsForSourceFile(
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const SourceFile &SF) const {
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return Invocation.getPrimarySpecificPathsForSourceFile(SF);
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}
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bool CompilerInstance::emitSwiftRanges(DiagnosticEngine &diags,
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SourceFile *primaryFile,
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StringRef outputPath) const {
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return incremental_ranges::SwiftRangesEmitter(outputPath, primaryFile,
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SourceMgr, diags)
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.emit();
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return false;
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}
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bool CompilerInstance::emitCompiledSource(DiagnosticEngine &diags,
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const SourceFile *primaryFile,
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StringRef outputPath) const {
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return incremental_ranges::CompiledSourceEmitter(outputPath, primaryFile,
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|
SourceMgr, diags)
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.emit();
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}
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