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226 lines
8.0 KiB
C++
226 lines
8.0 KiB
C++
//===--- Subsystems.h - Swift Compiler Subsystem Entrypoints ----*- C++ -*-===//
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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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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 declares the main entrypoints to the various subsystems.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_SUBSYSTEMS_H
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#define SWIFT_SUBSYSTEMS_H
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#include "swift/Basic/LLVM.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include <memory>
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namespace llvm {
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class MemoryBuffer;
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class Module;
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class FunctionPass;
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}
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namespace swift {
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class ASTContext;
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class TranslationUnit;
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class Decl;
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class DeclContext;
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class SILModule;
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struct TypeLoc;
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class SILParserTUState;
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class Parser;
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class SourceFile;
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class Token;
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class CodeCompletionCallbacksFactory;
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class PersistentParserState;
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class DelayedParsingCallbacks;
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class SourceManager;
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namespace irgen {
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class Options;
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}
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/// SILParserState - This is a context object used to optionally maintain SIL
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/// parsing context for the parser.
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class SILParserState {
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public:
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SILModule *M;
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SILParserTUState *S;
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explicit SILParserState(SILModule *M);
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~SILParserState();
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};
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/// @{
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/// \brief Check that the translation unit is well formed, aborting and spewing
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/// errors if not.
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///
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/// "Well-formed" here means following the invariants of the AST, not that the
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/// code written by the user makes sense.
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void verify(SourceFile &SF);
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void verify(Decl *D);
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/// @}
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/// \brief Parse a single buffer into the given source file.
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///
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/// If the source file is the main file, stop parsing after the next
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/// stmt-brace-item with side-effects.
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///
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/// \param SF the file within the translation unit being parsed.
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///
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/// \param BufferID the buffer to parse from.
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///
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/// \param[out] Done set to \c true if end of the buffer was reached.
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///
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/// \param SIL if non-null, we're parsing a SIL file.
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///
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/// \param PersistentState if non-null the same PersistentState object can
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/// be used to resume parsing or parse delayed function bodies.
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///
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/// \param DelayedParseCB if non-null enables delayed parsing for function
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/// bodies.
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///
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/// \return true if the parser found code with side effects.
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bool
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parseIntoTranslationUnit(SourceFile &SF, unsigned BufferID, bool *Done,
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SILParserState *SIL = nullptr,
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PersistentParserState *PersistentState = nullptr,
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DelayedParsingCallbacks *DelayedParseCB = nullptr);
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/// \brief Finish the parsing by going over the nodes that were delayed
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/// during the first parsing pass.
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void performDelayedParsing(DeclContext *DC,
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PersistentParserState &PersistentState,
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CodeCompletionCallbacksFactory *Factory);
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/// \brief Lex and return a vector of tokens for the given buffer.
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std::vector<Token> tokenize(SourceManager &SM, unsigned BufferID,
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unsigned Offset = 0, unsigned EndOffset = 0,
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bool KeepComments = true,
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bool TokenizeInterpolatedString = true);
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/// Once parsing is complete, this walks the AST to resolve imports, record
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/// operators, and do other top-level validation.
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///
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/// \param StartElem Where to start for incremental name binding in the main
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/// source file.
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void performNameBinding(SourceFile &SF, unsigned StartElem = 0);
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/// Once parsing and name-binding are complete, this walks the AST to resolve
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/// types and diagnose problems therein.
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///
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/// \param StartElem Where to start for incremental type-checking in the main
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/// source file.
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void performTypeChecking(SourceFile &SF, unsigned StartElem = 0);
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/// \brief Recursively validate the specified type.
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///
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/// This is used when dealing with partial translation units (e.g. SIL
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/// parsing, code completion).
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///
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/// \returns false on success, true on error.
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bool performTypeLocChecking(ASTContext &Ctx, TypeLoc &T,
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bool isSILType, DeclContext *DC,
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bool ProduceDiagnostics = true);
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/// Turn the given translation unit into SIL IR.
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std::unique_ptr<SILModule> performSILGeneration(TranslationUnit *TU);
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/// Turn a source file into SIL IR.
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std::unique_ptr<SILModule> performSILGeneration(SourceFile &SF,
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unsigned StartElem = 0);
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/// performSILDefiniteInitialization - Perform definitive initialization
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/// analysis and promote alloc_box uses into SSA registers for later SSA-based
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/// dataflow passes.
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void performSILDefiniteInitialization(SILModule *M);
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/// performSILAllocBoxToStackPromotion - Promote alloc_box into stack
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/// allocations.
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void performSILAllocBoxToStackPromotion(SILModule *M);
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/// \brief Fold instructions with constant operands. Diagnose overflows when
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/// possible.
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void performSILConstantPropagation(SILModule *M);
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/// \brief Detect and remove unreachable code. Diagnose provably unreachable
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/// user code.
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void performSILDeadCodeElimination(SILModule *M);
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/// \brief Combine instructions to form fewer, simple instructions via a
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/// simple worklist driven algorithm.
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void performSILCombine(SILModule *M);
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/// \brief Simplify the CFG of SIL functions.
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void performSimplifyCFG(SILModule *M);
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/// \brief Link a SILFunction declaration to the actual definition in the
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/// serialized modules.
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void performSILLinking(SILModule *M);
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/// \brief Optimize away shadow variables for any inout arguments that don't
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/// escape.
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void performInOutDeshadowing(SILModule *M);
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/// \brief Inline functions marked transparent. Diagnose attempts to
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/// circularly inline
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void performSILMandatoryInlining(SILModule *M);
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/// \brief Promote closure captures from [inout] to by-value.
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void performSILCapturePromotion(SILModule *M);
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/// \brief Analyze the SIL module for correcntess and generate user
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/// diagnostics if any.
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void emitSILDataflowDiagnostics(SILModule *M);
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using TranslationUnitOrSourceFile =
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PointerUnion<TranslationUnit *, SourceFile *>;
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/// Serializes a translation unit to the given output file.
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void serialize(TranslationUnitOrSourceFile DC, const SILModule *M,
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const char *outputPath,
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ArrayRef<std::string> inputFilenames = {},
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StringRef moduleLinkName = {});
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/// Serializes a translation unit to a stream.
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void serializeToStream(TranslationUnitOrSourceFile DC,
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llvm::raw_ostream &out,
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const SILModule *M = nullptr,
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ArrayRef<std::string> inputFilenames = {},
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StringRef moduleLinkName = {});
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/// \brief Cleanup instructions/builtin calls not suitable for IRGen.
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void performSILCleanup(SILModule *M);
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/// Turn the given translation unit into either LLVM IR or native code.
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void performIRGeneration(irgen::Options &Opts, llvm::Module *Module,
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TranslationUnit *TU, SILModule *SILMod);
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/// Turn the given source file into either LLVM IR or native code.
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void performIRGeneration(irgen::Options &Opts, llvm::Module *Module,
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SourceFile &SF, SILModule *SILMod,
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unsigned StartElem = 0);
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// Optimization passes.
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llvm::FunctionPass *createSwiftARCOptPass();
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llvm::FunctionPass *createSwiftARCExpandPass();
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/// The extension for serialized modules.
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static const char * const SERIALIZED_MODULE_EXTENSION = "swiftmodule";
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/// The extension for SIL files.
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static const char * const SIL_EXTENSION = "sil";
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} // end namespace swift
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#endif
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