86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
//===-- Bitcode/Reader/MetadataLoader.h - Load Metadatas -------*- C++ -*-====//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class handles loading Metadatas.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_BITCODE_READER_METADATALOADER_H
|
|
#define LLVM_LIB_BITCODE_READER_METADATALOADER_H
|
|
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/Support/Error.h"
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
|
|
namespace llvm {
|
|
class BitcodeReaderValueList;
|
|
class BitstreamCursor;
|
|
class DISubprogram;
|
|
class Error;
|
|
class Function;
|
|
class Instruction;
|
|
class Metadata;
|
|
class MDNode;
|
|
class Module;
|
|
class Type;
|
|
|
|
/// Helper class that handles loading Metadatas and keeping them available.
|
|
class MetadataLoader {
|
|
class MetadataLoaderImpl;
|
|
std::unique_ptr<MetadataLoaderImpl> Pimpl;
|
|
Error parseMetadata(bool ModuleLevel);
|
|
|
|
public:
|
|
~MetadataLoader();
|
|
MetadataLoader(BitstreamCursor &Stream, Module &TheModule,
|
|
BitcodeReaderValueList &ValueList, bool IsImporting,
|
|
std::function<Type *(unsigned)> getTypeByID);
|
|
MetadataLoader &operator=(MetadataLoader &&);
|
|
MetadataLoader(MetadataLoader &&);
|
|
|
|
// Parse a module metadata block
|
|
Error parseModuleMetadata() { return parseMetadata(true); }
|
|
|
|
// Parse a function metadata block
|
|
Error parseFunctionMetadata() { return parseMetadata(false); }
|
|
|
|
/// Set the mode to strip TBAA metadata on load.
|
|
void setStripTBAA(bool StripTBAA = true);
|
|
|
|
/// Return true if the Loader is stripping TBAA metadata.
|
|
bool isStrippingTBAA();
|
|
|
|
// Return true there are remaining unresolved forward references.
|
|
bool hasFwdRefs() const;
|
|
|
|
/// Return the given metadata, creating a replaceable forward reference if
|
|
/// necessary.
|
|
Metadata *getMetadataFwdRefOrLoad(unsigned Idx);
|
|
|
|
MDNode *getMDNodeFwdRefOrNull(unsigned Idx);
|
|
|
|
/// Return the DISubprogra metadata for a Function if any, null otherwise.
|
|
DISubprogram *lookupSubprogramForFunction(Function *F);
|
|
|
|
/// Parse a `METADATA_ATTACHMENT` block for a function.
|
|
Error parseMetadataAttachment(
|
|
Function &F, const SmallVectorImpl<Instruction *> &InstructionList);
|
|
|
|
/// Parse a `METADATA_KIND` block for the current module.
|
|
Error parseMetadataKinds();
|
|
|
|
unsigned size() const;
|
|
void shrinkTo(unsigned N);
|
|
};
|
|
}
|
|
|
|
#endif // LLVM_LIB_BITCODE_READER_METADATALOADER_H
|