#ifndef BITCODE_READER_H
#define BITCODE_READER_H
-#include "llvm/GVMaterializer.h"
-#include "llvm/Attributes.h"
-#include "llvm/Type.h"
-#include "llvm/OperandTraits.h"
+#include "llvm/ADT/DenseMap.h"
#include "llvm/Bitcode/BitstreamReader.h"
#include "llvm/Bitcode/LLVMBitCodes.h"
-#include "llvm/Support/ValueHandle.h"
-#include "llvm/ADT/DenseMap.h"
+#include "llvm/IR/Attributes.h"
+#include "llvm/IR/GVMaterializer.h"
+#include "llvm/IR/OperandTraits.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/ValueHandle.h"
+#include "llvm/Support/system_error.h"
#include <vector>
namespace llvm {
Module *TheModule;
MemoryBuffer *Buffer;
bool BufferOwned;
- OwningPtr<BitstreamReader> StreamFile;
+ std::unique_ptr<BitstreamReader> StreamFile;
BitstreamCursor Stream;
DataStreamer *LazyStreamer;
uint64_t NextUnreadBit;
bool SeenValueSymbolTable;
- const char *ErrorString;
-
std::vector<Type*> TypeList;
BitcodeReaderValueList ValueList;
BitcodeReaderMDValueList MDValueList;
std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInits;
std::vector<std::pair<GlobalAlias*, unsigned> > AliasInits;
+ std::vector<std::pair<Function*, unsigned> > FunctionPrefixes;
+
+ SmallVector<Instruction*, 64> InstsWithTBAATag;
/// MAttributes - The set of attributes by index. Index zero in the
/// file is for null, and is thus not represented here. As such all indices
/// are off by one.
- std::vector<AttrListPtr> MAttributes;
+ std::vector<AttributeSet> MAttributes;
+
+ /// \brief The set of attribute groups.
+ std::map<unsigned, AttributeSet> MAttributeGroups;
/// FunctionBBs - While parsing a function body, this is a list of the basic
/// blocks for the function.
/// not need this flag.
bool UseRelativeIDs;
+ static const error_category &BitcodeErrorCategory();
+
public:
+ enum ErrorType {
+ BitcodeStreamInvalidSize,
+ ConflictingMETADATA_KINDRecords,
+ CouldNotFindFunctionInStream,
+ ExpectedConstant,
+ InsufficientFunctionProtos,
+ InvalidBitcodeSignature,
+ InvalidBitcodeWrapperHeader,
+ InvalidConstantReference,
+ InvalidID, // A read identifier is not found in the table it should be in.
+ InvalidInstructionWithNoBB,
+ InvalidRecord, // A read record doesn't have the expected size or structure
+ InvalidTypeForValue, // Type read OK, but is invalid for its use
+ InvalidTYPETable,
+ InvalidType, // We were unable to read a type
+ MalformedBlock, // We are unable to advance in the stream.
+ MalformedGlobalInitializerSet,
+ InvalidMultipleBlocks, // We found multiple blocks of a kind that should
+ // have only one
+ NeverResolvedValueFoundInFunction,
+ InvalidValue // Invalid version, inst number, attr number, etc
+ };
+
+ error_code Error(ErrorType E) {
+ return error_code(E, BitcodeErrorCategory());
+ }
+
explicit BitcodeReader(MemoryBuffer *buffer, LLVMContext &C)
- : Context(C), TheModule(0), Buffer(buffer), BufferOwned(false),
- LazyStreamer(0), NextUnreadBit(0), SeenValueSymbolTable(false),
- ErrorString(0), ValueList(C), MDValueList(C),
+ : Context(C), TheModule(nullptr), Buffer(buffer), BufferOwned(false),
+ LazyStreamer(nullptr), NextUnreadBit(0), SeenValueSymbolTable(false),
+ ValueList(C), MDValueList(C),
SeenFirstFunctionBody(false), UseRelativeIDs(false) {
}
explicit BitcodeReader(DataStreamer *streamer, LLVMContext &C)
- : Context(C), TheModule(0), Buffer(0), BufferOwned(false),
+ : Context(C), TheModule(nullptr), Buffer(nullptr), BufferOwned(false),
LazyStreamer(streamer), NextUnreadBit(0), SeenValueSymbolTable(false),
- ErrorString(0), ValueList(C), MDValueList(C),
+ ValueList(C), MDValueList(C),
SeenFirstFunctionBody(false), UseRelativeIDs(false) {
}
~BitcodeReader() {
/// when the reader is destroyed.
void setBufferOwned(bool Owned) { BufferOwned = Owned; }
- virtual bool isMaterializable(const GlobalValue *GV) const;
- virtual bool isDematerializable(const GlobalValue *GV) const;
- virtual bool Materialize(GlobalValue *GV, std::string *ErrInfo = 0);
- virtual bool MaterializeModule(Module *M, std::string *ErrInfo = 0);
- virtual void Dematerialize(GlobalValue *GV);
-
- bool Error(const char *Str) {
- ErrorString = Str;
- return true;
- }
- const char *getErrorString() const { return ErrorString; }
+ bool isMaterializable(const GlobalValue *GV) const override;
+ bool isDematerializable(const GlobalValue *GV) const override;
+ error_code Materialize(GlobalValue *GV) override;
+ error_code MaterializeModule(Module *M) override;
+ void Dematerialize(GlobalValue *GV) override;
/// @brief Main interface to parsing a bitcode buffer.
/// @returns true if an error occurred.
- bool ParseBitcodeInto(Module *M);
+ error_code ParseBitcodeInto(Module *M);
/// @brief Cheap mechanism to just extract module triple
/// @returns true if an error occurred.
- bool ParseTriple(std::string &Triple);
+ error_code ParseTriple(std::string &Triple);
static uint64_t decodeSignRotatedValue(uint64_t V);
return ValueList.getValueFwdRef(ID, Ty);
}
BasicBlock *getBasicBlock(unsigned ID) const {
- if (ID >= FunctionBBs.size()) return 0; // Invalid ID
+ if (ID >= FunctionBBs.size()) return nullptr; // Invalid ID
return FunctionBBs[ID];
}
- AttrListPtr getAttributes(unsigned i) const {
+ AttributeSet getAttributes(unsigned i) const {
if (i-1 < MAttributes.size())
return MAttributes[i-1];
- return AttrListPtr();
+ return AttributeSet();
}
/// getValueTypePair - Read a value/type pair out of the specified record from
/// slot 'Slot'. Increment Slot past the number of slots used in the record.
/// Return true on failure.
- bool getValueTypePair(SmallVector<uint64_t, 64> &Record, unsigned &Slot,
+ bool getValueTypePair(SmallVectorImpl<uint64_t> &Record, unsigned &Slot,
unsigned InstNum, Value *&ResVal) {
if (Slot == Record.size()) return true;
unsigned ValNo = (unsigned)Record[Slot++];
if (ValNo < InstNum) {
// If this is not a forward reference, just return the value we already
// have.
- ResVal = getFnValueByID(ValNo, 0);
- return ResVal == 0;
+ ResVal = getFnValueByID(ValNo, nullptr);
+ return ResVal == nullptr;
} else if (Slot == Record.size()) {
return true;
}
unsigned TypeNo = (unsigned)Record[Slot++];
ResVal = getFnValueByID(ValNo, getTypeByID(TypeNo));
- return ResVal == 0;
+ return ResVal == nullptr;
}
/// popValue - Read a value out of the specified record from slot 'Slot'.
/// Increment Slot past the number of slots used by the value in the record.
/// Return true if there is an error.
- bool popValue(SmallVector<uint64_t, 64> &Record, unsigned &Slot,
+ bool popValue(SmallVectorImpl<uint64_t> &Record, unsigned &Slot,
unsigned InstNum, Type *Ty, Value *&ResVal) {
if (getValue(Record, Slot, InstNum, Ty, ResVal))
return true;
}
/// getValue -- Like popValue, but does not increment the Slot number.
- bool getValue(SmallVector<uint64_t, 64> &Record, unsigned Slot,
+ bool getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
unsigned InstNum, Type *Ty, Value *&ResVal) {
ResVal = getValue(Record, Slot, InstNum, Ty);
- return ResVal == 0;
+ return ResVal == nullptr;
}
/// getValue -- Version of getValue that returns ResVal directly,
/// or 0 if there is an error.
- Value *getValue(SmallVector<uint64_t, 64> &Record, unsigned Slot,
+ Value *getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
unsigned InstNum, Type *Ty) {
- if (Slot == Record.size()) return 0;
+ if (Slot == Record.size()) return nullptr;
unsigned ValNo = (unsigned)Record[Slot];
// Adjust the ValNo, if it was encoded relative to the InstNum.
if (UseRelativeIDs)
}
/// getValueSigned -- Like getValue, but decodes signed VBRs.
- Value *getValueSigned(SmallVector<uint64_t, 64> &Record, unsigned Slot,
+ Value *getValueSigned(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
unsigned InstNum, Type *Ty) {
- if (Slot == Record.size()) return 0;
+ if (Slot == Record.size()) return nullptr;
unsigned ValNo = (unsigned)decodeSignRotatedValue(Record[Slot]);
// Adjust the ValNo, if it was encoded relative to the InstNum.
if (UseRelativeIDs)
return getFnValueByID(ValNo, Ty);
}
- bool ParseModule(bool Resume);
- bool ParseAttributeBlock();
- bool ParseTypeTable();
- bool ParseTypeTableBody();
-
- bool ParseValueSymbolTable();
- bool ParseConstants();
- bool RememberAndSkipFunctionBody();
- bool ParseFunctionBody(Function *F);
- bool GlobalCleanup();
- bool ResolveGlobalAndAliasInits();
- bool ParseMetadata();
- bool ParseMetadataAttachment();
- bool ParseModuleTriple(std::string &Triple);
- bool ParseUseLists();
- bool InitStream();
- bool InitStreamFromBuffer();
- bool InitLazyStream();
- bool FindFunctionInStream(Function *F,
+ error_code ParseAttrKind(uint64_t Code, Attribute::AttrKind *Kind);
+ error_code ParseModule(bool Resume);
+ error_code ParseAttributeBlock();
+ error_code ParseAttributeGroupBlock();
+ error_code ParseTypeTable();
+ error_code ParseTypeTableBody();
+
+ error_code ParseValueSymbolTable();
+ error_code ParseConstants();
+ error_code RememberAndSkipFunctionBody();
+ error_code ParseFunctionBody(Function *F);
+ error_code GlobalCleanup();
+ error_code ResolveGlobalAndAliasInits();
+ error_code ParseMetadata();
+ error_code ParseMetadataAttachment();
+ error_code ParseModuleTriple(std::string &Triple);
+ error_code ParseUseLists();
+ error_code InitStream();
+ error_code InitStreamFromBuffer();
+ error_code InitLazyStream();
+ error_code FindFunctionInStream(Function *F,
DenseMap<Function*, uint64_t>::iterator DeferredFunctionInfoIterator);
};
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