#include "llvm/IR/Module.h"
#include "llvm/IR/OperandTraits.h"
#include "llvm/IR/Operator.h"
+#include "llvm/IR/FunctionInfo.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/Support/DataStream.h"
#include "llvm/Support/ManagedStatic.h"
class BitcodeReaderValueList {
std::vector<WeakVH> ValuePtrs;
- /// ResolveConstants - As we resolve forward-referenced constants, we add
- /// information about them to this vector. This allows us to resolve them in
- /// bulk instead of resolving each reference at a time. See the code in
+ /// As we resolve forward-referenced constants, we add information about them
+ /// to this vector. This allows us to resolve them in bulk instead of
+ /// resolving each reference at a time. See the code in
/// ResolveConstantForwardRefs for more information about this.
///
/// The key of this vector is the placeholder constant, the value is the slot
Constant *getConstantFwdRef(unsigned Idx, Type *Ty);
Value *getValueFwdRef(unsigned Idx, Type *Ty);
- void AssignValue(Value *V, unsigned Idx);
+ void assignValue(Value *V, unsigned Idx);
- /// ResolveConstantForwardRefs - Once all constants are read, this method bulk
- /// resolves any forward references.
- void ResolveConstantForwardRefs();
+ /// Once all constants are read, this method bulk resolves any forward
+ /// references.
+ void resolveConstantForwardRefs();
};
-class BitcodeReaderMDValueList {
+class BitcodeReaderMetadataList {
unsigned NumFwdRefs;
bool AnyFwdRefs;
unsigned MinFwdRef;
unsigned MaxFwdRef;
- std::vector<TrackingMDRef> MDValuePtrs;
+ std::vector<TrackingMDRef> MetadataPtrs;
LLVMContext &Context;
public:
- BitcodeReaderMDValueList(LLVMContext &C)
+ BitcodeReaderMetadataList(LLVMContext &C)
: NumFwdRefs(0), AnyFwdRefs(false), Context(C) {}
// vector compatibility methods
- unsigned size() const { return MDValuePtrs.size(); }
- void resize(unsigned N) { MDValuePtrs.resize(N); }
- void push_back(Metadata *MD) { MDValuePtrs.emplace_back(MD); }
- void clear() { MDValuePtrs.clear(); }
- Metadata *back() const { return MDValuePtrs.back(); }
- void pop_back() { MDValuePtrs.pop_back(); }
- bool empty() const { return MDValuePtrs.empty(); }
+ unsigned size() const { return MetadataPtrs.size(); }
+ void resize(unsigned N) { MetadataPtrs.resize(N); }
+ void push_back(Metadata *MD) { MetadataPtrs.emplace_back(MD); }
+ void clear() { MetadataPtrs.clear(); }
+ Metadata *back() const { return MetadataPtrs.back(); }
+ void pop_back() { MetadataPtrs.pop_back(); }
+ bool empty() const { return MetadataPtrs.empty(); }
Metadata *operator[](unsigned i) const {
- assert(i < MDValuePtrs.size());
- return MDValuePtrs[i];
+ assert(i < MetadataPtrs.size());
+ return MetadataPtrs[i];
}
void shrinkTo(unsigned N) {
assert(N <= size() && "Invalid shrinkTo request!");
- MDValuePtrs.resize(N);
+ MetadataPtrs.resize(N);
}
Metadata *getValueFwdRef(unsigned Idx);
- void AssignValue(Metadata *MD, unsigned Idx);
+ void assignValue(Metadata *MD, unsigned Idx);
void tryToResolveCycles();
};
class BitcodeReader : public GVMaterializer {
LLVMContext &Context;
- DiagnosticHandlerFunction DiagnosticHandler;
- Module *TheModule;
+ Module *TheModule = nullptr;
std::unique_ptr<MemoryBuffer> Buffer;
std::unique_ptr<BitstreamReader> StreamFile;
BitstreamCursor Stream;
- DataStreamer *LazyStreamer;
- uint64_t NextUnreadBit;
- bool SeenValueSymbolTable;
+ // Next offset to start scanning for lazy parsing of function bodies.
+ uint64_t NextUnreadBit = 0;
+ // Last function offset found in the VST.
+ uint64_t LastFunctionBlockBit = 0;
+ bool SeenValueSymbolTable = false;
+ uint64_t VSTOffset = 0;
+ // Contains an arbitrary and optional string identifying the bitcode producer
+ std::string ProducerIdentification;
+ // Number of module level metadata records specified by the
+ // MODULE_CODE_METADATA_VALUES record.
+ unsigned NumModuleMDs = 0;
+ // Support older bitcode without the MODULE_CODE_METADATA_VALUES record.
+ bool SeenModuleValuesRecord = false;
std::vector<Type*> TypeList;
BitcodeReaderValueList ValueList;
- BitcodeReaderMDValueList MDValueList;
+ BitcodeReaderMetadataList MetadataList;
std::vector<Comdat *> ComdatList;
SmallVector<Instruction *, 64> InstructionList;
std::vector<std::pair<GlobalAlias*, unsigned> > AliasInits;
std::vector<std::pair<Function*, unsigned> > FunctionPrefixes;
std::vector<std::pair<Function*, unsigned> > FunctionPrologues;
+ std::vector<std::pair<Function*, unsigned> > FunctionPersonalityFns;
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.
+ /// 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<AttributeSet> MAttributes;
- /// \brief The set of attribute groups.
+ /// 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.
+ /// While parsing a function body, this is a list of the basic blocks for the
+ /// function.
std::vector<BasicBlock*> FunctionBBs;
// When reading the module header, this list is populated with functions that
// When intrinsic functions are encountered which require upgrading they are
// stored here with their replacement function.
- typedef std::vector<std::pair<Function*, Function*> > UpgradedIntrinsicMap;
+ typedef DenseMap<Function*, Function*> UpgradedIntrinsicMap;
UpgradedIntrinsicMap UpgradedIntrinsics;
// Map the bitcode's custom MDKind ID to the Module's MDKind ID.
// Several operations happen after the module header has been read, but
// before function bodies are processed. This keeps track of whether
// we've done this yet.
- bool SeenFirstFunctionBody;
+ bool SeenFirstFunctionBody = false;
- /// DeferredFunctionInfo - When function bodies are initially scanned, this
- /// map contains info about where to find deferred function body in the
- /// stream.
+ /// When function bodies are initially scanned, this map contains info about
+ /// where to find deferred function body in the stream.
DenseMap<Function*, uint64_t> DeferredFunctionInfo;
/// When Metadata block is initially scanned when parsing the module, we may
DenseMap<Function *, std::vector<BasicBlock *>> BasicBlockFwdRefs;
std::deque<Function *> BasicBlockFwdRefQueue;
- /// UseRelativeIDs - Indicates that we are using a new encoding for
- /// instruction operands where most operands in the current
- /// FUNCTION_BLOCK are encoded relative to the instruction number,
- /// for a more compact encoding. Some instruction operands are not
- /// relative to the instruction ID: basic block numbers, and types.
- /// Once the old style function blocks have been phased out, we would
+ /// Indicates that we are using a new encoding for instruction operands where
+ /// most operands in the current FUNCTION_BLOCK are encoded relative to the
+ /// instruction number, for a more compact encoding. Some instruction
+ /// operands are not relative to the instruction ID: basic block numbers, and
+ /// types. Once the old style function blocks have been phased out, we would
/// not need this flag.
- bool UseRelativeIDs;
+ bool UseRelativeIDs = false;
/// True if all functions will be materialized, negating the need to process
/// (e.g.) blockaddress forward references.
- bool WillMaterializeAllForwardRefs;
-
- /// Functions that have block addresses taken. This is usually empty.
- SmallPtrSet<const Function *, 4> BlockAddressesTaken;
+ bool WillMaterializeAllForwardRefs = false;
/// True if any Metadata block has been materialized.
- bool IsMetadataMaterialized;
+ bool IsMetadataMaterialized = false;
bool StripDebugInfo = false;
+ /// Functions that need to be matched with subprograms when upgrading old
+ /// metadata.
+ SmallDenseMap<Function *, DISubprogram *, 16> FunctionsWithSPs;
+
+ std::vector<std::string> BundleTags;
+
public:
- std::error_code Error(BitcodeError E, const Twine &Message);
- std::error_code Error(BitcodeError E);
- std::error_code Error(const Twine &Message);
+ std::error_code error(BitcodeError E, const Twine &Message);
+ std::error_code error(BitcodeError E);
+ std::error_code error(const Twine &Message);
- explicit BitcodeReader(MemoryBuffer *buffer, LLVMContext &C,
- DiagnosticHandlerFunction DiagnosticHandler);
- explicit BitcodeReader(DataStreamer *streamer, LLVMContext &C,
- DiagnosticHandlerFunction DiagnosticHandler);
- ~BitcodeReader() override { FreeState(); }
+ BitcodeReader(MemoryBuffer *Buffer, LLVMContext &Context);
+ BitcodeReader(LLVMContext &Context);
+ ~BitcodeReader() override { freeState(); }
std::error_code materializeForwardReferencedFunctions();
- void FreeState();
+ void freeState();
void releaseBuffer();
- bool isDematerializable(const GlobalValue *GV) const override;
std::error_code materialize(GlobalValue *GV) override;
- std::error_code materializeModule(Module *M) override;
+ std::error_code materializeModule() override;
std::vector<StructType *> getIdentifiedStructTypes() const override;
- void dematerialize(GlobalValue *GV) override;
- /// @brief Main interface to parsing a bitcode buffer.
- /// @returns true if an error occurred.
- std::error_code ParseBitcodeInto(Module *M,
+ /// \brief Main interface to parsing a bitcode buffer.
+ /// \returns true if an error occurred.
+ std::error_code parseBitcodeInto(std::unique_ptr<DataStreamer> Streamer,
+ Module *M,
bool ShouldLazyLoadMetadata = false);
- /// @brief Cheap mechanism to just extract module triple
- /// @returns true if an error occurred.
+ /// \brief Cheap mechanism to just extract module triple
+ /// \returns true if an error occurred.
ErrorOr<std::string> parseTriple();
+ /// Cheap mechanism to just extract the identification block out of bitcode.
+ ErrorOr<std::string> parseIdentificationBlock();
+
static uint64_t decodeSignRotatedValue(uint64_t V);
/// Materialize any deferred Metadata block.
void setStripDebugInfo() override;
+ /// Save the mapping between the metadata values and the corresponding
+ /// value id that were recorded in the MetadataList during parsing. If
+ /// OnlyTempMD is true, then only record those entries that are still
+ /// temporary metadata. This interface is used when metadata linking is
+ /// performed as a postpass, such as during function importing.
+ void saveMetadataList(DenseMap<const Metadata *, unsigned> &MetadataToIDs,
+ bool OnlyTempMD) override;
+
private:
+ /// Parse the "IDENTIFICATION_BLOCK_ID" block, populate the
+ // ProducerIdentification data member, and do some basic enforcement on the
+ // "epoch" encoded in the bitcode.
+ std::error_code parseBitcodeVersion();
+
std::vector<StructType *> IdentifiedStructTypes;
StructType *createIdentifiedStructType(LLVMContext &Context, StringRef Name);
StructType *createIdentifiedStructType(LLVMContext &Context);
return ValueList.getValueFwdRef(ID, Ty);
}
Metadata *getFnMetadataByID(unsigned ID) {
- return MDValueList.getValueFwdRef(ID);
+ return MetadataList.getValueFwdRef(ID);
}
BasicBlock *getBasicBlock(unsigned ID) const {
if (ID >= FunctionBBs.size()) return nullptr; // Invalid ID
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.
+ /// 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(SmallVectorImpl<uint64_t> &Record, unsigned &Slot,
unsigned InstNum, Value *&ResVal) {
if (Slot == Record.size()) return true;
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.
+ /// 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(SmallVectorImpl<uint64_t> &Record, unsigned &Slot,
unsigned InstNum, Type *Ty, Value *&ResVal) {
if (getValue(Record, Slot, InstNum, Ty, ResVal))
return false;
}
- /// getValue -- Like popValue, but does not increment the Slot number.
+ /// Like popValue, but does not increment the Slot number.
bool getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
unsigned InstNum, Type *Ty, Value *&ResVal) {
ResVal = getValue(Record, Slot, InstNum, Ty);
return ResVal == nullptr;
}
- /// getValue -- Version of getValue that returns ResVal directly,
- /// or 0 if there is an error.
+ /// Version of getValue that returns ResVal directly, or 0 if there is an
+ /// error.
Value *getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
unsigned InstNum, Type *Ty) {
if (Slot == Record.size()) return nullptr;
return getFnValueByID(ValNo, Ty);
}
- /// getValueSigned -- Like getValue, but decodes signed VBRs.
+ /// Like getValue, but decodes signed VBRs.
Value *getValueSigned(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
unsigned InstNum, Type *Ty) {
if (Slot == Record.size()) return nullptr;
/// corresponding alignment to use. If alignment is too large, returns
/// a corresponding error code.
std::error_code parseAlignmentValue(uint64_t Exponent, unsigned &Alignment);
- std::error_code ParseAttrKind(uint64_t Code, Attribute::AttrKind *Kind);
- std::error_code ParseModule(bool Resume, bool ShouldLazyLoadMetadata = false);
- std::error_code ParseAttributeBlock();
- std::error_code ParseAttributeGroupBlock();
- std::error_code ParseTypeTable();
- std::error_code ParseTypeTableBody();
-
- std::error_code ParseValueSymbolTable();
- std::error_code ParseConstants();
- std::error_code RememberAndSkipFunctionBody();
+ std::error_code parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind);
+ std::error_code parseModule(uint64_t ResumeBit,
+ bool ShouldLazyLoadMetadata = false);
+ std::error_code parseAttributeBlock();
+ std::error_code parseAttributeGroupBlock();
+ std::error_code parseTypeTable();
+ std::error_code parseTypeTableBody();
+ std::error_code parseOperandBundleTags();
+
+ ErrorOr<Value *> recordValue(SmallVectorImpl<uint64_t> &Record,
+ unsigned NameIndex, Triple &TT);
+ std::error_code parseValueSymbolTable(uint64_t Offset = 0);
+ std::error_code parseConstants();
+ std::error_code rememberAndSkipFunctionBodies();
+ std::error_code rememberAndSkipFunctionBody();
/// Save the positions of the Metadata blocks and skip parsing the blocks.
std::error_code rememberAndSkipMetadata();
- std::error_code ParseFunctionBody(Function *F);
- std::error_code GlobalCleanup();
- std::error_code ResolveGlobalAndAliasInits();
- std::error_code ParseMetadata();
- std::error_code ParseMetadataAttachment(Function &F);
+ std::error_code parseFunctionBody(Function *F);
+ std::error_code globalCleanup();
+ std::error_code resolveGlobalAndAliasInits();
+ std::error_code parseMetadata(bool ModuleLevel = false);
+ std::error_code parseMetadataKinds();
+ std::error_code parseMetadataKindRecord(SmallVectorImpl<uint64_t> &Record);
+ std::error_code parseMetadataAttachment(Function &F);
ErrorOr<std::string> parseModuleTriple();
- std::error_code ParseUseLists();
- std::error_code InitStream();
- std::error_code InitStreamFromBuffer();
- std::error_code InitLazyStream();
- std::error_code FindFunctionInStream(
+ std::error_code parseUseLists();
+ std::error_code initStream(std::unique_ptr<DataStreamer> Streamer);
+ std::error_code initStreamFromBuffer();
+ std::error_code initLazyStream(std::unique_ptr<DataStreamer> Streamer);
+ std::error_code findFunctionInStream(
Function *F,
DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator);
};
+
+/// Class to manage reading and parsing function summary index bitcode
+/// files/sections.
+class FunctionIndexBitcodeReader {
+ DiagnosticHandlerFunction DiagnosticHandler;
+
+ /// Eventually points to the function index built during parsing.
+ FunctionInfoIndex *TheIndex = nullptr;
+
+ std::unique_ptr<MemoryBuffer> Buffer;
+ std::unique_ptr<BitstreamReader> StreamFile;
+ BitstreamCursor Stream;
+
+ /// \brief Used to indicate whether we are doing lazy parsing of summary data.
+ ///
+ /// If false, the summary section is fully parsed into the index during
+ /// the initial parse. Otherwise, if true, the caller is expected to
+ /// invoke \a readFunctionSummary for each summary needed, and the summary
+ /// section is thus parsed lazily.
+ bool IsLazy = false;
+
+ /// Used to indicate whether caller only wants to check for the presence
+ /// of the function summary bitcode section. All blocks are skipped,
+ /// but the SeenFuncSummary boolean is set.
+ bool CheckFuncSummaryPresenceOnly = false;
+
+ /// Indicates whether we have encountered a function summary section
+ /// yet during parsing, used when checking if file contains function
+ /// summary section.
+ bool SeenFuncSummary = false;
+
+ /// \brief Map populated during function summary section parsing, and
+ /// consumed during ValueSymbolTable parsing.
+ ///
+ /// Used to correlate summary records with VST entries. For the per-module
+ /// index this maps the ValueID to the parsed function summary, and
+ /// for the combined index this maps the summary record's bitcode
+ /// offset to the function summary (since in the combined index the
+ /// VST records do not hold value IDs but rather hold the function
+ /// summary record offset).
+ DenseMap<uint64_t, std::unique_ptr<FunctionSummary>> SummaryMap;
+
+ /// Map populated during module path string table parsing, from the
+ /// module ID to a string reference owned by the index's module
+ /// path string table, used to correlate with combined index function
+ /// summary records.
+ DenseMap<uint64_t, StringRef> ModuleIdMap;
+
+public:
+ std::error_code error(BitcodeError E, const Twine &Message);
+ std::error_code error(BitcodeError E);
+ std::error_code error(const Twine &Message);
+
+ FunctionIndexBitcodeReader(MemoryBuffer *Buffer,
+ DiagnosticHandlerFunction DiagnosticHandler,
+ bool IsLazy = false,
+ bool CheckFuncSummaryPresenceOnly = false);
+ FunctionIndexBitcodeReader(DiagnosticHandlerFunction DiagnosticHandler,
+ bool IsLazy = false,
+ bool CheckFuncSummaryPresenceOnly = false);
+ ~FunctionIndexBitcodeReader() { freeState(); }
+
+ void freeState();
+
+ void releaseBuffer();
+
+ /// Check if the parser has encountered a function summary section.
+ bool foundFuncSummary() { return SeenFuncSummary; }
+
+ /// \brief Main interface to parsing a bitcode buffer.
+ /// \returns true if an error occurred.
+ std::error_code parseSummaryIndexInto(std::unique_ptr<DataStreamer> Streamer,
+ FunctionInfoIndex *I);
+
+ /// \brief Interface for parsing a function summary lazily.
+ std::error_code parseFunctionSummary(std::unique_ptr<DataStreamer> Streamer,
+ FunctionInfoIndex *I,
+ size_t FunctionSummaryOffset);
+
+private:
+ std::error_code parseModule();
+ std::error_code parseValueSymbolTable();
+ std::error_code parseEntireSummary();
+ std::error_code parseModuleStringTable();
+ std::error_code initStream(std::unique_ptr<DataStreamer> Streamer);
+ std::error_code initStreamFromBuffer();
+ std::error_code initLazyStream(std::unique_ptr<DataStreamer> Streamer);
+};
} // namespace
BitcodeDiagnosticInfo::BitcodeDiagnosticInfo(std::error_code EC,
void BitcodeDiagnosticInfo::print(DiagnosticPrinter &DP) const { DP << Msg; }
-static std::error_code Error(DiagnosticHandlerFunction DiagnosticHandler,
+static std::error_code error(DiagnosticHandlerFunction DiagnosticHandler,
std::error_code EC, const Twine &Message) {
BitcodeDiagnosticInfo DI(EC, DS_Error, Message);
DiagnosticHandler(DI);
return EC;
}
-static std::error_code Error(DiagnosticHandlerFunction DiagnosticHandler,
+static std::error_code error(DiagnosticHandlerFunction DiagnosticHandler,
std::error_code EC) {
- return Error(DiagnosticHandler, EC, EC.message());
+ return error(DiagnosticHandler, EC, EC.message());
}
-static std::error_code Error(DiagnosticHandlerFunction DiagnosticHandler,
+static std::error_code error(LLVMContext &Context, std::error_code EC,
const Twine &Message) {
- return Error(DiagnosticHandler,
- make_error_code(BitcodeError::CorruptedBitcode), Message);
+ return error([&](const DiagnosticInfo &DI) { Context.diagnose(DI); }, EC,
+ Message);
}
-std::error_code BitcodeReader::Error(BitcodeError E, const Twine &Message) {
- return ::Error(DiagnosticHandler, make_error_code(E), Message);
+static std::error_code error(LLVMContext &Context, std::error_code EC) {
+ return error(Context, EC, EC.message());
}
-std::error_code BitcodeReader::Error(const Twine &Message) {
- return ::Error(DiagnosticHandler,
- make_error_code(BitcodeError::CorruptedBitcode), Message);
+static std::error_code error(LLVMContext &Context, const Twine &Message) {
+ return error(Context, make_error_code(BitcodeError::CorruptedBitcode),
+ Message);
+}
+
+std::error_code BitcodeReader::error(BitcodeError E, const Twine &Message) {
+ if (!ProducerIdentification.empty()) {
+ return ::error(Context, make_error_code(E),
+ Message + " (Producer: '" + ProducerIdentification +
+ "' Reader: 'LLVM " + LLVM_VERSION_STRING "')");
+ }
+ return ::error(Context, make_error_code(E), Message);
}
-std::error_code BitcodeReader::Error(BitcodeError E) {
- return ::Error(DiagnosticHandler, make_error_code(E));
+std::error_code BitcodeReader::error(const Twine &Message) {
+ if (!ProducerIdentification.empty()) {
+ return ::error(Context, make_error_code(BitcodeError::CorruptedBitcode),
+ Message + " (Producer: '" + ProducerIdentification +
+ "' Reader: 'LLVM " + LLVM_VERSION_STRING "')");
+ }
+ return ::error(Context, make_error_code(BitcodeError::CorruptedBitcode),
+ Message);
}
-static DiagnosticHandlerFunction getDiagHandler(DiagnosticHandlerFunction F,
- LLVMContext &C) {
- if (F)
- return F;
- return [&C](const DiagnosticInfo &DI) { C.diagnose(DI); };
+std::error_code BitcodeReader::error(BitcodeError E) {
+ return ::error(Context, make_error_code(E));
}
-BitcodeReader::BitcodeReader(MemoryBuffer *buffer, LLVMContext &C,
- DiagnosticHandlerFunction DiagnosticHandler)
- : Context(C), DiagnosticHandler(getDiagHandler(DiagnosticHandler, C)),
- TheModule(nullptr), Buffer(buffer), LazyStreamer(nullptr),
- NextUnreadBit(0), SeenValueSymbolTable(false), ValueList(C),
- MDValueList(C), SeenFirstFunctionBody(false), UseRelativeIDs(false),
- WillMaterializeAllForwardRefs(false), IsMetadataMaterialized(false) {}
-
-BitcodeReader::BitcodeReader(DataStreamer *streamer, LLVMContext &C,
- DiagnosticHandlerFunction DiagnosticHandler)
- : Context(C), DiagnosticHandler(getDiagHandler(DiagnosticHandler, C)),
- TheModule(nullptr), Buffer(nullptr), LazyStreamer(streamer),
- NextUnreadBit(0), SeenValueSymbolTable(false), ValueList(C),
- MDValueList(C), SeenFirstFunctionBody(false), UseRelativeIDs(false),
- WillMaterializeAllForwardRefs(false), IsMetadataMaterialized(false) {}
+BitcodeReader::BitcodeReader(MemoryBuffer *Buffer, LLVMContext &Context)
+ : Context(Context), Buffer(Buffer), ValueList(Context),
+ MetadataList(Context) {}
+
+BitcodeReader::BitcodeReader(LLVMContext &Context)
+ : Context(Context), Buffer(nullptr), ValueList(Context),
+ MetadataList(Context) {}
std::error_code BitcodeReader::materializeForwardReferencedFunctions() {
if (WillMaterializeAllForwardRefs)
// isn't a trivial way to check if a function will have a body without a
// linear search through FunctionsWithBodies, so just check it here.
if (!F->isMaterializable())
- return Error("Never resolved function from blockaddress");
+ return error("Never resolved function from blockaddress");
// Try to materialize F.
if (std::error_code EC = materialize(F))
return std::error_code();
}
-void BitcodeReader::FreeState() {
+void BitcodeReader::freeState() {
Buffer = nullptr;
std::vector<Type*>().swap(TypeList);
ValueList.clear();
- MDValueList.clear();
+ MetadataList.clear();
std::vector<Comdat *>().swap(ComdatList);
std::vector<AttributeSet>().swap(MAttributes);
// Helper functions to implement forward reference resolution, etc.
//===----------------------------------------------------------------------===//
-/// ConvertToString - Convert a string from a record into an std::string, return
-/// true on failure.
-template<typename StrTy>
-static bool ConvertToString(ArrayRef<uint64_t> Record, unsigned Idx,
+/// Convert a string from a record into an std::string, return true on failure.
+template <typename StrTy>
+static bool convertToString(ArrayRef<uint64_t> Record, unsigned Idx,
StrTy &Result) {
if (Idx > Record.size())
return true;
}
}
-static GlobalValue::VisibilityTypes GetDecodedVisibility(unsigned Val) {
+static GlobalValue::VisibilityTypes getDecodedVisibility(unsigned Val) {
switch (Val) {
default: // Map unknown visibilities to default.
case 0: return GlobalValue::DefaultVisibility;
}
static GlobalValue::DLLStorageClassTypes
-GetDecodedDLLStorageClass(unsigned Val) {
+getDecodedDLLStorageClass(unsigned Val) {
switch (Val) {
default: // Map unknown values to default.
case 0: return GlobalValue::DefaultStorageClass;
}
}
-static GlobalVariable::ThreadLocalMode GetDecodedThreadLocalMode(unsigned Val) {
+static GlobalVariable::ThreadLocalMode getDecodedThreadLocalMode(unsigned Val) {
switch (Val) {
case 0: return GlobalVariable::NotThreadLocal;
default: // Map unknown non-zero value to general dynamic.
}
}
-static int GetDecodedCastOpcode(unsigned Val) {
+static int getDecodedCastOpcode(unsigned Val) {
switch (Val) {
default: return -1;
case bitc::CAST_TRUNC : return Instruction::Trunc;
}
}
-static int GetDecodedBinaryOpcode(unsigned Val, Type *Ty) {
+static int getDecodedBinaryOpcode(unsigned Val, Type *Ty) {
bool IsFP = Ty->isFPOrFPVectorTy();
// BinOps are only valid for int/fp or vector of int/fp types
if (!IsFP && !Ty->isIntOrIntVectorTy())
}
}
-static AtomicRMWInst::BinOp GetDecodedRMWOperation(unsigned Val) {
+static AtomicRMWInst::BinOp getDecodedRMWOperation(unsigned Val) {
switch (Val) {
default: return AtomicRMWInst::BAD_BINOP;
case bitc::RMW_XCHG: return AtomicRMWInst::Xchg;
}
}
-static AtomicOrdering GetDecodedOrdering(unsigned Val) {
+static AtomicOrdering getDecodedOrdering(unsigned Val) {
switch (Val) {
case bitc::ORDERING_NOTATOMIC: return NotAtomic;
case bitc::ORDERING_UNORDERED: return Unordered;
}
}
-static SynchronizationScope GetDecodedSynchScope(unsigned Val) {
+static SynchronizationScope getDecodedSynchScope(unsigned Val) {
switch (Val) {
case bitc::SYNCHSCOPE_SINGLETHREAD: return SingleThread;
default: // Map unknown scopes to cross-thread.
}
}
-static void UpgradeDLLImportExportLinkage(llvm::GlobalValue *GV, unsigned Val) {
+static FastMathFlags getDecodedFastMathFlags(unsigned Val) {
+ FastMathFlags FMF;
+ if (0 != (Val & FastMathFlags::UnsafeAlgebra))
+ FMF.setUnsafeAlgebra();
+ if (0 != (Val & FastMathFlags::NoNaNs))
+ FMF.setNoNaNs();
+ if (0 != (Val & FastMathFlags::NoInfs))
+ FMF.setNoInfs();
+ if (0 != (Val & FastMathFlags::NoSignedZeros))
+ FMF.setNoSignedZeros();
+ if (0 != (Val & FastMathFlags::AllowReciprocal))
+ FMF.setAllowReciprocal();
+ return FMF;
+}
+
+static void upgradeDLLImportExportLinkage(llvm::GlobalValue *GV, unsigned Val) {
switch (Val) {
case 5: GV->setDLLStorageClass(GlobalValue::DLLImportStorageClass); break;
case 6: GV->setDLLStorageClass(GlobalValue::DLLExportStorageClass); break;
namespace llvm {
namespace {
- /// @brief A class for maintaining the slot number definition
- /// as a placeholder for the actual definition for forward constants defs.
- class ConstantPlaceHolder : public ConstantExpr {
- void operator=(const ConstantPlaceHolder &) = delete;
- public:
- // allocate space for exactly one operand
- void *operator new(size_t s) {
- return User::operator new(s, 1);
- }
- explicit ConstantPlaceHolder(Type *Ty, LLVMContext& Context)
- : ConstantExpr(Ty, Instruction::UserOp1, &Op<0>(), 1) {
- Op<0>() = UndefValue::get(Type::getInt32Ty(Context));
- }
+/// \brief A class for maintaining the slot number definition
+/// as a placeholder for the actual definition for forward constants defs.
+class ConstantPlaceHolder : public ConstantExpr {
+ void operator=(const ConstantPlaceHolder &) = delete;
- /// @brief Methods to support type inquiry through isa, cast, and dyn_cast.
- static bool classof(const Value *V) {
- return isa<ConstantExpr>(V) &&
- cast<ConstantExpr>(V)->getOpcode() == Instruction::UserOp1;
- }
+public:
+ // allocate space for exactly one operand
+ void *operator new(size_t s) { return User::operator new(s, 1); }
+ explicit ConstantPlaceHolder(Type *Ty, LLVMContext &Context)
+ : ConstantExpr(Ty, Instruction::UserOp1, &Op<0>(), 1) {
+ Op<0>() = UndefValue::get(Type::getInt32Ty(Context));
+ }
+ /// \brief Methods to support type inquiry through isa, cast, and dyn_cast.
+ static bool classof(const Value *V) {
+ return isa<ConstantExpr>(V) &&
+ cast<ConstantExpr>(V)->getOpcode() == Instruction::UserOp1;
+ }
- /// Provide fast operand accessors
- DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
- };
+ /// Provide fast operand accessors
+ DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+};
}
// FIXME: can we inherit this from ConstantExpr?
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ConstantPlaceHolder, Value)
}
-
-void BitcodeReaderValueList::AssignValue(Value *V, unsigned Idx) {
+void BitcodeReaderValueList::assignValue(Value *V, unsigned Idx) {
if (Idx == size()) {
push_back(V);
return;
OldV->replaceAllUsesWith(V);
delete PrevVal;
}
+
+ return;
}
return V;
}
-/// ResolveConstantForwardRefs - Once all constants are read, this method bulk
-/// resolves any forward references. The idea behind this is that we sometimes
-/// get constants (such as large arrays) which reference *many* forward ref
-/// constants. Replacing each of these causes a lot of thrashing when
-/// building/reuniquing the constant. Instead of doing this, we look at all the
-/// uses and rewrite all the place holders at once for any constant that uses
-/// a placeholder.
-void BitcodeReaderValueList::ResolveConstantForwardRefs() {
+/// Once all constants are read, this method bulk resolves any forward
+/// references. The idea behind this is that we sometimes get constants (such
+/// as large arrays) which reference *many* forward ref constants. Replacing
+/// each of these causes a lot of thrashing when building/reuniquing the
+/// constant. Instead of doing this, we look at all the uses and rewrite all
+/// the place holders at once for any constant that uses a placeholder.
+void BitcodeReaderValueList::resolveConstantForwardRefs() {
// Sort the values by-pointer so that they are efficient to look up with a
// binary search.
std::sort(ResolveConstants.begin(), ResolveConstants.end());
}
}
-void BitcodeReaderMDValueList::AssignValue(Metadata *MD, unsigned Idx) {
+void BitcodeReaderMetadataList::assignValue(Metadata *MD, unsigned Idx) {
if (Idx == size()) {
push_back(MD);
return;
if (Idx >= size())
resize(Idx+1);
- TrackingMDRef &OldMD = MDValuePtrs[Idx];
+ TrackingMDRef &OldMD = MetadataPtrs[Idx];
if (!OldMD) {
OldMD.reset(MD);
return;
--NumFwdRefs;
}
-Metadata *BitcodeReaderMDValueList::getValueFwdRef(unsigned Idx) {
+Metadata *BitcodeReaderMetadataList::getValueFwdRef(unsigned Idx) {
if (Idx >= size())
resize(Idx + 1);
- if (Metadata *MD = MDValuePtrs[Idx])
+ if (Metadata *MD = MetadataPtrs[Idx])
return MD;
// Track forward refs to be resolved later.
// Create and return a placeholder, which will later be RAUW'd.
Metadata *MD = MDNode::getTemporary(Context, None).release();
- MDValuePtrs[Idx].reset(MD);
+ MetadataPtrs[Idx].reset(MD);
return MD;
}
-void BitcodeReaderMDValueList::tryToResolveCycles() {
+void BitcodeReaderMetadataList::tryToResolveCycles() {
if (!AnyFwdRefs)
// Nothing to do.
return;
// Resolve any cycles.
for (unsigned I = MinFwdRef, E = MaxFwdRef + 1; I != E; ++I) {
- auto &MD = MDValuePtrs[I];
+ auto &MD = MetadataPtrs[I];
auto *N = dyn_cast_or_null<MDNode>(MD);
if (!N)
continue;
(EncodedAttrs & 0xffff));
}
-std::error_code BitcodeReader::ParseAttributeBlock() {
+std::error_code BitcodeReader::parseAttributeBlock() {
if (Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
if (!MAttributes.empty())
- return Error("Invalid multiple blocks");
+ return error("Invalid multiple blocks");
SmallVector<uint64_t, 64> Record;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
return std::error_code();
case BitstreamEntry::Record:
case bitc::PARAMATTR_CODE_ENTRY_OLD: { // ENTRY: [paramidx0, attr0, ...]
// FIXME: Remove in 4.0.
if (Record.size() & 1)
- return Error("Invalid record");
+ return error("Invalid record");
for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
AttrBuilder B;
}
// Returns Attribute::None on unrecognized codes.
-static Attribute::AttrKind GetAttrFromCode(uint64_t Code) {
+static Attribute::AttrKind getAttrFromCode(uint64_t Code) {
switch (Code) {
default:
return Attribute::None;
return Attribute::Alignment;
case bitc::ATTR_KIND_ALWAYS_INLINE:
return Attribute::AlwaysInline;
+ case bitc::ATTR_KIND_ARGMEMONLY:
+ return Attribute::ArgMemOnly;
case bitc::ATTR_KIND_BUILTIN:
return Attribute::Builtin;
case bitc::ATTR_KIND_BY_VAL:
return Attribute::Cold;
case bitc::ATTR_KIND_CONVERGENT:
return Attribute::Convergent;
+ case bitc::ATTR_KIND_INACCESSIBLEMEM_ONLY:
+ return Attribute::InaccessibleMemOnly;
+ case bitc::ATTR_KIND_INACCESSIBLEMEM_OR_ARGMEMONLY:
+ return Attribute::InaccessibleMemOrArgMemOnly;
case bitc::ATTR_KIND_INLINE_HINT:
return Attribute::InlineHint;
case bitc::ATTR_KIND_IN_REG:
return Attribute::NoImplicitFloat;
case bitc::ATTR_KIND_NO_INLINE:
return Attribute::NoInline;
+ case bitc::ATTR_KIND_NO_RECURSE:
+ return Attribute::NoRecurse;
case bitc::ATTR_KIND_NON_LAZY_BIND:
return Attribute::NonLazyBind;
case bitc::ATTR_KIND_NON_NULL:
return Attribute::StackProtectReq;
case bitc::ATTR_KIND_STACK_PROTECT_STRONG:
return Attribute::StackProtectStrong;
+ case bitc::ATTR_KIND_SAFESTACK:
+ return Attribute::SafeStack;
case bitc::ATTR_KIND_STRUCT_RET:
return Attribute::StructRet;
case bitc::ATTR_KIND_SANITIZE_ADDRESS:
// Note: Alignment in bitcode files is incremented by 1, so that zero
// can be used for default alignment.
if (Exponent > Value::MaxAlignmentExponent + 1)
- return Error("Invalid alignment value");
+ return error("Invalid alignment value");
Alignment = (1 << static_cast<unsigned>(Exponent)) >> 1;
return std::error_code();
}
-std::error_code BitcodeReader::ParseAttrKind(uint64_t Code,
+std::error_code BitcodeReader::parseAttrKind(uint64_t Code,
Attribute::AttrKind *Kind) {
- *Kind = GetAttrFromCode(Code);
+ *Kind = getAttrFromCode(Code);
if (*Kind == Attribute::None)
- return Error(BitcodeError::CorruptedBitcode,
+ return error(BitcodeError::CorruptedBitcode,
"Unknown attribute kind (" + Twine(Code) + ")");
return std::error_code();
}
-std::error_code BitcodeReader::ParseAttributeGroupBlock() {
+std::error_code BitcodeReader::parseAttributeGroupBlock() {
if (Stream.EnterSubBlock(bitc::PARAMATTR_GROUP_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
if (!MAttributeGroups.empty())
- return Error("Invalid multiple blocks");
+ return error("Invalid multiple blocks");
SmallVector<uint64_t, 64> Record;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
return std::error_code();
case BitstreamEntry::Record:
break;
case bitc::PARAMATTR_GRP_CODE_ENTRY: { // ENTRY: [grpid, idx, a0, a1, ...]
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
uint64_t GrpID = Record[0];
uint64_t Idx = Record[1]; // Index of the object this attribute refers to.
for (unsigned i = 2, e = Record.size(); i != e; ++i) {
if (Record[i] == 0) { // Enum attribute
Attribute::AttrKind Kind;
- if (std::error_code EC = ParseAttrKind(Record[++i], &Kind))
+ if (std::error_code EC = parseAttrKind(Record[++i], &Kind))
return EC;
B.addAttribute(Kind);
} else if (Record[i] == 1) { // Integer attribute
Attribute::AttrKind Kind;
- if (std::error_code EC = ParseAttrKind(Record[++i], &Kind))
+ if (std::error_code EC = parseAttrKind(Record[++i], &Kind))
return EC;
if (Kind == Attribute::Alignment)
B.addAlignmentAttr(Record[++i]);
}
}
-std::error_code BitcodeReader::ParseTypeTable() {
+std::error_code BitcodeReader::parseTypeTable() {
if (Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_NEW))
- return Error("Invalid record");
+ return error("Invalid record");
- return ParseTypeTableBody();
+ return parseTypeTableBody();
}
-std::error_code BitcodeReader::ParseTypeTableBody() {
+std::error_code BitcodeReader::parseTypeTableBody() {
if (!TypeList.empty())
- return Error("Invalid multiple blocks");
+ return error("Invalid multiple blocks");
SmallVector<uint64_t, 64> Record;
unsigned NumRecords = 0;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
if (NumRecords != TypeList.size())
- return Error("Malformed block");
+ return error("Malformed block");
return std::error_code();
case BitstreamEntry::Record:
// The interesting case.
Type *ResultTy = nullptr;
switch (Stream.readRecord(Entry.ID, Record)) {
default:
- return Error("Invalid value");
+ return error("Invalid value");
case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries]
// TYPE_CODE_NUMENTRY contains a count of the number of types in the
// type list. This allows us to reserve space.
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
TypeList.resize(Record[0]);
continue;
case bitc::TYPE_CODE_VOID: // VOID
case bitc::TYPE_CODE_X86_MMX: // X86_MMX
ResultTy = Type::getX86_MMXTy(Context);
break;
+ case bitc::TYPE_CODE_TOKEN: // TOKEN
+ ResultTy = Type::getTokenTy(Context);
+ break;
case bitc::TYPE_CODE_INTEGER: { // INTEGER: [width]
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
uint64_t NumBits = Record[0];
if (NumBits < IntegerType::MIN_INT_BITS ||
NumBits > IntegerType::MAX_INT_BITS)
- return Error("Bitwidth for integer type out of range");
+ return error("Bitwidth for integer type out of range");
ResultTy = IntegerType::get(Context, NumBits);
break;
}
case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or
// [pointee type, address space]
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned AddressSpace = 0;
if (Record.size() == 2)
AddressSpace = Record[1];
ResultTy = getTypeByID(Record[0]);
if (!ResultTy ||
!PointerType::isValidElementType(ResultTy))
- return Error("Invalid type");
+ return error("Invalid type");
ResultTy = PointerType::get(ResultTy, AddressSpace);
break;
}
// FIXME: attrid is dead, remove it in LLVM 4.0
// FUNCTION: [vararg, attrid, retty, paramty x N]
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<Type*, 8> ArgTys;
for (unsigned i = 3, e = Record.size(); i != e; ++i) {
if (Type *T = getTypeByID(Record[i]))
ResultTy = getTypeByID(Record[2]);
if (!ResultTy || ArgTys.size() < Record.size()-3)
- return Error("Invalid type");
+ return error("Invalid type");
ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]);
break;
case bitc::TYPE_CODE_FUNCTION: {
// FUNCTION: [vararg, retty, paramty x N]
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<Type*, 8> ArgTys;
for (unsigned i = 2, e = Record.size(); i != e; ++i) {
if (Type *T = getTypeByID(Record[i])) {
if (!FunctionType::isValidArgumentType(T))
- return Error("Invalid function argument type");
+ return error("Invalid function argument type");
ArgTys.push_back(T);
}
else
ResultTy = getTypeByID(Record[1]);
if (!ResultTy || ArgTys.size() < Record.size()-2)
- return Error("Invalid type");
+ return error("Invalid type");
ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]);
break;
}
case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N]
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<Type*, 8> EltTys;
for (unsigned i = 1, e = Record.size(); i != e; ++i) {
if (Type *T = getTypeByID(Record[i]))
break;
}
if (EltTys.size() != Record.size()-1)
- return Error("Invalid type");
+ return error("Invalid type");
ResultTy = StructType::get(Context, EltTys, Record[0]);
break;
}
case bitc::TYPE_CODE_STRUCT_NAME: // STRUCT_NAME: [strchr x N]
- if (ConvertToString(Record, 0, TypeName))
- return Error("Invalid record");
+ if (convertToString(Record, 0, TypeName))
+ return error("Invalid record");
continue;
case bitc::TYPE_CODE_STRUCT_NAMED: { // STRUCT: [ispacked, eltty x N]
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
if (NumRecords >= TypeList.size())
- return Error("Invalid TYPE table");
+ return error("Invalid TYPE table");
// Check to see if this was forward referenced, if so fill in the temp.
StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]);
break;
}
if (EltTys.size() != Record.size()-1)
- return Error("Invalid record");
+ return error("Invalid record");
Res->setBody(EltTys, Record[0]);
ResultTy = Res;
break;
}
case bitc::TYPE_CODE_OPAQUE: { // OPAQUE: []
if (Record.size() != 1)
- return Error("Invalid record");
+ return error("Invalid record");
if (NumRecords >= TypeList.size())
- return Error("Invalid TYPE table");
+ return error("Invalid TYPE table");
// Check to see if this was forward referenced, if so fill in the temp.
StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]);
}
case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty]
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
ResultTy = getTypeByID(Record[1]);
if (!ResultTy || !ArrayType::isValidElementType(ResultTy))
- return Error("Invalid type");
+ return error("Invalid type");
ResultTy = ArrayType::get(ResultTy, Record[0]);
break;
case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty]
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
if (Record[0] == 0)
- return Error("Invalid vector length");
+ return error("Invalid vector length");
ResultTy = getTypeByID(Record[1]);
if (!ResultTy || !StructType::isValidElementType(ResultTy))
- return Error("Invalid type");
+ return error("Invalid type");
ResultTy = VectorType::get(ResultTy, Record[0]);
break;
}
if (NumRecords >= TypeList.size())
- return Error("Invalid TYPE table");
+ return error("Invalid TYPE table");
if (TypeList[NumRecords])
- return Error(
+ return error(
"Invalid TYPE table: Only named structs can be forward referenced");
assert(ResultTy && "Didn't read a type?");
TypeList[NumRecords++] = ResultTy;
}
}
-std::error_code BitcodeReader::ParseValueSymbolTable() {
+std::error_code BitcodeReader::parseOperandBundleTags() {
+ if (Stream.EnterSubBlock(bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID))
+ return error("Invalid record");
+
+ if (!BundleTags.empty())
+ return error("Invalid multiple blocks");
+
+ SmallVector<uint64_t, 64> Record;
+
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
+ }
+
+ // Tags are implicitly mapped to integers by their order.
+
+ if (Stream.readRecord(Entry.ID, Record) != bitc::OPERAND_BUNDLE_TAG)
+ return error("Invalid record");
+
+ // OPERAND_BUNDLE_TAG: [strchr x N]
+ BundleTags.emplace_back();
+ if (convertToString(Record, 0, BundleTags.back()))
+ return error("Invalid record");
+ Record.clear();
+ }
+}
+
+/// Associate a value with its name from the given index in the provided record.
+ErrorOr<Value *> BitcodeReader::recordValue(SmallVectorImpl<uint64_t> &Record,
+ unsigned NameIndex, Triple &TT) {
+ SmallString<128> ValueName;
+ if (convertToString(Record, NameIndex, ValueName))
+ return error("Invalid record");
+ unsigned ValueID = Record[0];
+ if (ValueID >= ValueList.size() || !ValueList[ValueID])
+ return error("Invalid record");
+ Value *V = ValueList[ValueID];
+
+ StringRef NameStr(ValueName.data(), ValueName.size());
+ if (NameStr.find_first_of(0) != StringRef::npos)
+ return error("Invalid value name");
+ V->setName(NameStr);
+ auto *GO = dyn_cast<GlobalObject>(V);
+ if (GO) {
+ if (GO->getComdat() == reinterpret_cast<Comdat *>(1)) {
+ if (TT.isOSBinFormatMachO())
+ GO->setComdat(nullptr);
+ else
+ GO->setComdat(TheModule->getOrInsertComdat(V->getName()));
+ }
+ }
+ return V;
+}
+
+/// Parse the value symbol table at either the current parsing location or
+/// at the given bit offset if provided.
+std::error_code BitcodeReader::parseValueSymbolTable(uint64_t Offset) {
+ uint64_t CurrentBit;
+ // Pass in the Offset to distinguish between calling for the module-level
+ // VST (where we want to jump to the VST offset) and the function-level
+ // VST (where we don't).
+ if (Offset > 0) {
+ // Save the current parsing location so we can jump back at the end
+ // of the VST read.
+ CurrentBit = Stream.GetCurrentBitNo();
+ Stream.JumpToBit(Offset * 32);
+#ifndef NDEBUG
+ // Do some checking if we are in debug mode.
+ BitstreamEntry Entry = Stream.advance();
+ assert(Entry.Kind == BitstreamEntry::SubBlock);
+ assert(Entry.ID == bitc::VALUE_SYMTAB_BLOCK_ID);
+#else
+ // In NDEBUG mode ignore the output so we don't get an unused variable
+ // warning.
+ Stream.advance();
+#endif
+ }
+
+ // Compute the delta between the bitcode indices in the VST (the word offset
+ // to the word-aligned ENTER_SUBBLOCK for the function block, and that
+ // expected by the lazy reader. The reader's EnterSubBlock expects to have
+ // already read the ENTER_SUBBLOCK code (size getAbbrevIDWidth) and BlockID
+ // (size BlockIDWidth). Note that we access the stream's AbbrevID width here
+ // just before entering the VST subblock because: 1) the EnterSubBlock
+ // changes the AbbrevID width; 2) the VST block is nested within the same
+ // outer MODULE_BLOCK as the FUNCTION_BLOCKs and therefore have the same
+ // AbbrevID width before calling EnterSubBlock; and 3) when we want to
+ // jump to the FUNCTION_BLOCK using this offset later, we don't want
+ // to rely on the stream's AbbrevID width being that of the MODULE_BLOCK.
+ unsigned FuncBitcodeOffsetDelta =
+ Stream.getAbbrevIDWidth() + bitc::BlockIDWidth;
+
if (Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<uint64_t, 64> Record;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
+ if (Offset > 0)
+ Stream.JumpToBit(CurrentBit);
return std::error_code();
case BitstreamEntry::Record:
// The interesting case.
default: // Default behavior: unknown type.
break;
case bitc::VST_CODE_ENTRY: { // VST_ENTRY: [valueid, namechar x N]
- if (ConvertToString(Record, 1, ValueName))
- return Error("Invalid record");
- unsigned ValueID = Record[0];
- if (ValueID >= ValueList.size() || !ValueList[ValueID])
- return Error("Invalid record");
- Value *V = ValueList[ValueID];
-
- V->setName(StringRef(ValueName.data(), ValueName.size()));
- if (auto *GO = dyn_cast<GlobalObject>(V)) {
- if (GO->getComdat() == reinterpret_cast<Comdat *>(1)) {
- if (TT.isOSBinFormatMachO())
- GO->setComdat(nullptr);
- else
- GO->setComdat(TheModule->getOrInsertComdat(V->getName()));
- }
+ ErrorOr<Value *> ValOrErr = recordValue(Record, 1, TT);
+ if (std::error_code EC = ValOrErr.getError())
+ return EC;
+ ValOrErr.get();
+ break;
+ }
+ case bitc::VST_CODE_FNENTRY: {
+ // VST_FNENTRY: [valueid, offset, namechar x N]
+ ErrorOr<Value *> ValOrErr = recordValue(Record, 2, TT);
+ if (std::error_code EC = ValOrErr.getError())
+ return EC;
+ Value *V = ValOrErr.get();
+
+ auto *GO = dyn_cast<GlobalObject>(V);
+ if (!GO) {
+ // If this is an alias, need to get the actual Function object
+ // it aliases, in order to set up the DeferredFunctionInfo entry below.
+ auto *GA = dyn_cast<GlobalAlias>(V);
+ if (GA)
+ GO = GA->getBaseObject();
+ assert(GO);
}
- ValueName.clear();
+
+ uint64_t FuncWordOffset = Record[1];
+ Function *F = dyn_cast<Function>(GO);
+ assert(F);
+ uint64_t FuncBitOffset = FuncWordOffset * 32;
+ DeferredFunctionInfo[F] = FuncBitOffset + FuncBitcodeOffsetDelta;
+ // Set the LastFunctionBlockBit to point to the last function block.
+ // Later when parsing is resumed after function materialization,
+ // we can simply skip that last function block.
+ if (FuncBitOffset > LastFunctionBlockBit)
+ LastFunctionBlockBit = FuncBitOffset;
break;
}
case bitc::VST_CODE_BBENTRY: {
- if (ConvertToString(Record, 1, ValueName))
- return Error("Invalid record");
+ if (convertToString(Record, 1, ValueName))
+ return error("Invalid record");
BasicBlock *BB = getBasicBlock(Record[0]);
if (!BB)
- return Error("Invalid record");
+ return error("Invalid record");
BB->setName(StringRef(ValueName.data(), ValueName.size()));
ValueName.clear();
}
}
+/// Parse a single METADATA_KIND record, inserting result in MDKindMap.
+std::error_code
+BitcodeReader::parseMetadataKindRecord(SmallVectorImpl<uint64_t> &Record) {
+ if (Record.size() < 2)
+ return error("Invalid record");
+
+ unsigned Kind = Record[0];
+ SmallString<8> Name(Record.begin() + 1, Record.end());
+
+ unsigned NewKind = TheModule->getMDKindID(Name.str());
+ if (!MDKindMap.insert(std::make_pair(Kind, NewKind)).second)
+ return error("Conflicting METADATA_KIND records");
+ return std::error_code();
+}
+
static int64_t unrotateSign(uint64_t U) { return U & 1 ? ~(U >> 1) : U >> 1; }
-std::error_code BitcodeReader::ParseMetadata() {
+/// Parse a METADATA_BLOCK. If ModuleLevel is true then we are parsing
+/// module level metadata.
+std::error_code BitcodeReader::parseMetadata(bool ModuleLevel) {
IsMetadataMaterialized = true;
- unsigned NextMDValueNo = MDValueList.size();
+ unsigned NextMetadataNo = MetadataList.size();
+ if (ModuleLevel && SeenModuleValuesRecord) {
+ // Now that we are parsing the module level metadata, we want to restart
+ // the numbering of the MD values, and replace temp MD created earlier
+ // with their real values. If we saw a METADATA_VALUE record then we
+ // would have set the MetadataList size to the number specified in that
+ // record, to support parsing function-level metadata first, and we need
+ // to reset back to 0 to fill the MetadataList in with the parsed module
+ // The function-level metadata parsing should have reset the MetadataList
+ // size back to the value reported by the METADATA_VALUE record, saved in
+ // NumModuleMDs.
+ assert(NumModuleMDs == MetadataList.size() &&
+ "Expected MetadataList to only contain module level values");
+ NextMetadataNo = 0;
+ }
if (Stream.EnterSubBlock(bitc::METADATA_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<uint64_t, 64> Record;
- auto getMD =
- [&](unsigned ID) -> Metadata *{ return MDValueList.getValueFwdRef(ID); };
+ auto getMD = [&](unsigned ID) -> Metadata * {
+ return MetadataList.getValueFwdRef(ID);
+ };
auto getMDOrNull = [&](unsigned ID) -> Metadata *{
if (ID)
return getMD(ID - 1);
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
- MDValueList.tryToResolveCycles();
+ MetadataList.tryToResolveCycles();
+ assert((!(ModuleLevel && SeenModuleValuesRecord) ||
+ NumModuleMDs == MetadataList.size()) &&
+ "Inconsistent bitcode: METADATA_VALUES mismatch");
return std::error_code();
case BitstreamEntry::Record:
// The interesting case.
unsigned NextBitCode = Stream.readRecord(Code, Record);
if (NextBitCode != bitc::METADATA_NAMED_NODE)
- return Error("METADATA_NAME not followed by METADATA_NAMED_NODE");
+ return error("METADATA_NAME not followed by METADATA_NAMED_NODE");
// Read named metadata elements.
unsigned Size = Record.size();
NamedMDNode *NMD = TheModule->getOrInsertNamedMetadata(Name);
for (unsigned i = 0; i != Size; ++i) {
- MDNode *MD = dyn_cast_or_null<MDNode>(MDValueList.getValueFwdRef(Record[i]));
+ MDNode *MD =
+ dyn_cast_or_null<MDNode>(MetadataList.getValueFwdRef(Record[i]));
if (!MD)
- return Error("Invalid record");
+ return error("Invalid record");
NMD->addOperand(MD);
}
break;
// This is a LocalAsMetadata record, the only type of function-local
// metadata.
if (Record.size() % 2 == 1)
- return Error("Invalid record");
+ return error("Invalid record");
// If this isn't a LocalAsMetadata record, we're dropping it. This used
// to be legal, but there's no upgrade path.
auto dropRecord = [&] {
- MDValueList.AssignValue(MDNode::get(Context, None), NextMDValueNo++);
+ MetadataList.assignValue(MDNode::get(Context, None), NextMetadataNo++);
};
if (Record.size() != 2) {
dropRecord();
break;
}
- MDValueList.AssignValue(
+ MetadataList.assignValue(
LocalAsMetadata::get(ValueList.getValueFwdRef(Record[1], Ty)),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_OLD_NODE: {
// FIXME: Remove in 4.0.
if (Record.size() % 2 == 1)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned Size = Record.size();
SmallVector<Metadata *, 8> Elts;
for (unsigned i = 0; i != Size; i += 2) {
Type *Ty = getTypeByID(Record[i]);
if (!Ty)
- return Error("Invalid record");
+ return error("Invalid record");
if (Ty->isMetadataTy())
- Elts.push_back(MDValueList.getValueFwdRef(Record[i+1]));
+ Elts.push_back(MetadataList.getValueFwdRef(Record[i + 1]));
else if (!Ty->isVoidTy()) {
auto *MD =
ValueAsMetadata::get(ValueList.getValueFwdRef(Record[i + 1], Ty));
} else
Elts.push_back(nullptr);
}
- MDValueList.AssignValue(MDNode::get(Context, Elts), NextMDValueNo++);
+ MetadataList.assignValue(MDNode::get(Context, Elts), NextMetadataNo++);
break;
}
case bitc::METADATA_VALUE: {
if (Record.size() != 2)
- return Error("Invalid record");
+ return error("Invalid record");
Type *Ty = getTypeByID(Record[0]);
if (Ty->isMetadataTy() || Ty->isVoidTy())
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
ValueAsMetadata::get(ValueList.getValueFwdRef(Record[1], Ty)),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_DISTINCT_NODE:
SmallVector<Metadata *, 8> Elts;
Elts.reserve(Record.size());
for (unsigned ID : Record)
- Elts.push_back(ID ? MDValueList.getValueFwdRef(ID - 1) : nullptr);
- MDValueList.AssignValue(IsDistinct ? MDNode::getDistinct(Context, Elts)
- : MDNode::get(Context, Elts),
- NextMDValueNo++);
+ Elts.push_back(ID ? MetadataList.getValueFwdRef(ID - 1) : nullptr);
+ MetadataList.assignValue(IsDistinct ? MDNode::getDistinct(Context, Elts)
+ : MDNode::get(Context, Elts),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_LOCATION: {
if (Record.size() != 5)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned Line = Record[1];
unsigned Column = Record[2];
- MDNode *Scope = cast<MDNode>(MDValueList.getValueFwdRef(Record[3]));
+ MDNode *Scope = cast<MDNode>(MetadataList.getValueFwdRef(Record[3]));
Metadata *InlinedAt =
- Record[4] ? MDValueList.getValueFwdRef(Record[4] - 1) : nullptr;
- MDValueList.AssignValue(
+ Record[4] ? MetadataList.getValueFwdRef(Record[4] - 1) : nullptr;
+ MetadataList.assignValue(
GET_OR_DISTINCT(DILocation, Record[0],
(Context, Line, Column, Scope, InlinedAt)),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_GENERIC_DEBUG: {
if (Record.size() < 4)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned Tag = Record[1];
unsigned Version = Record[2];
if (Tag >= 1u << 16 || Version != 0)
- return Error("Invalid record");
+ return error("Invalid record");
auto *Header = getMDString(Record[3]);
SmallVector<Metadata *, 8> DwarfOps;
for (unsigned I = 4, E = Record.size(); I != E; ++I)
- DwarfOps.push_back(Record[I] ? MDValueList.getValueFwdRef(Record[I] - 1)
- : nullptr);
- MDValueList.AssignValue(GET_OR_DISTINCT(GenericDINode, Record[0],
- (Context, Tag, Header, DwarfOps)),
- NextMDValueNo++);
+ DwarfOps.push_back(
+ Record[I] ? MetadataList.getValueFwdRef(Record[I] - 1) : nullptr);
+ MetadataList.assignValue(
+ GET_OR_DISTINCT(GenericDINode, Record[0],
+ (Context, Tag, Header, DwarfOps)),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_SUBRANGE: {
if (Record.size() != 3)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DISubrange, Record[0],
(Context, Record[1], unrotateSign(Record[2]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_ENUMERATOR: {
if (Record.size() != 3)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(GET_OR_DISTINCT(DIEnumerator, Record[0],
- (Context, unrotateSign(Record[1]),
- getMDString(Record[2]))),
- NextMDValueNo++);
+ MetadataList.assignValue(
+ GET_OR_DISTINCT(
+ DIEnumerator, Record[0],
+ (Context, unrotateSign(Record[1]), getMDString(Record[2]))),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_BASIC_TYPE: {
if (Record.size() != 6)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIBasicType, Record[0],
(Context, Record[1], getMDString(Record[2]),
Record[3], Record[4], Record[5])),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_DERIVED_TYPE: {
if (Record.size() != 12)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIDerivedType, Record[0],
(Context, Record[1], getMDString(Record[2]),
getMDOrNull(Record[3]), Record[4],
getMDOrNull(Record[5]), getMDOrNull(Record[6]),
Record[7], Record[8], Record[9], Record[10],
getMDOrNull(Record[11]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_COMPOSITE_TYPE: {
if (Record.size() != 16)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DICompositeType, Record[0],
(Context, Record[1], getMDString(Record[2]),
getMDOrNull(Record[3]), Record[4],
getMDOrNull(Record[11]), Record[12],
getMDOrNull(Record[13]), getMDOrNull(Record[14]),
getMDString(Record[15]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_SUBROUTINE_TYPE: {
if (Record.size() != 3)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DISubroutineType, Record[0],
(Context, Record[1], getMDOrNull(Record[2]))),
- NextMDValueNo++);
+ NextMetadataNo++);
+ break;
+ }
+
+ case bitc::METADATA_MODULE: {
+ if (Record.size() != 6)
+ return error("Invalid record");
+
+ MetadataList.assignValue(
+ GET_OR_DISTINCT(DIModule, Record[0],
+ (Context, getMDOrNull(Record[1]),
+ getMDString(Record[2]), getMDString(Record[3]),
+ getMDString(Record[4]), getMDString(Record[5]))),
+ NextMetadataNo++);
break;
}
+
case bitc::METADATA_FILE: {
if (Record.size() != 3)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIFile, Record[0], (Context, getMDString(Record[1]),
getMDString(Record[2]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_COMPILE_UNIT: {
- if (Record.size() < 14 || Record.size() > 15)
- return Error("Invalid record");
-
- MDValueList.AssignValue(
- GET_OR_DISTINCT(DICompileUnit, Record[0],
- (Context, Record[1], getMDOrNull(Record[2]),
- getMDString(Record[3]), Record[4],
- getMDString(Record[5]), Record[6],
- getMDString(Record[7]), Record[8],
- getMDOrNull(Record[9]), getMDOrNull(Record[10]),
- getMDOrNull(Record[11]), getMDOrNull(Record[12]),
- getMDOrNull(Record[13]),
- Record.size() == 14 ? 0 : Record[14])),
- NextMDValueNo++);
+ if (Record.size() < 14 || Record.size() > 16)
+ return error("Invalid record");
+
+ // Ignore Record[0], which indicates whether this compile unit is
+ // distinct. It's always distinct.
+ MetadataList.assignValue(
+ DICompileUnit::getDistinct(
+ Context, Record[1], getMDOrNull(Record[2]),
+ getMDString(Record[3]), Record[4], getMDString(Record[5]),
+ Record[6], getMDString(Record[7]), Record[8],
+ getMDOrNull(Record[9]), getMDOrNull(Record[10]),
+ getMDOrNull(Record[11]), getMDOrNull(Record[12]),
+ getMDOrNull(Record[13]),
+ Record.size() <= 15 ? 0 : getMDOrNull(Record[15]),
+ Record.size() <= 14 ? 0 : Record[14]),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_SUBPROGRAM: {
- if (Record.size() != 19)
- return Error("Invalid record");
-
- MDValueList.AssignValue(
- GET_OR_DISTINCT(
- DISubprogram, Record[0],
- (Context, getMDOrNull(Record[1]), getMDString(Record[2]),
- getMDString(Record[3]), getMDOrNull(Record[4]), Record[5],
- getMDOrNull(Record[6]), Record[7], Record[8], Record[9],
- getMDOrNull(Record[10]), Record[11], Record[12], Record[13],
- Record[14], getMDOrNull(Record[15]), getMDOrNull(Record[16]),
- getMDOrNull(Record[17]), getMDOrNull(Record[18]))),
- NextMDValueNo++);
+ if (Record.size() != 18 && Record.size() != 19)
+ return error("Invalid record");
+
+ bool HasFn = Record.size() == 19;
+ DISubprogram *SP = GET_OR_DISTINCT(
+ DISubprogram,
+ Record[0] || Record[8], // All definitions should be distinct.
+ (Context, getMDOrNull(Record[1]), getMDString(Record[2]),
+ getMDString(Record[3]), getMDOrNull(Record[4]), Record[5],
+ getMDOrNull(Record[6]), Record[7], Record[8], Record[9],
+ getMDOrNull(Record[10]), Record[11], Record[12], Record[13],
+ Record[14], getMDOrNull(Record[15 + HasFn]),
+ getMDOrNull(Record[16 + HasFn]), getMDOrNull(Record[17 + HasFn])));
+ MetadataList.assignValue(SP, NextMetadataNo++);
+
+ // Upgrade sp->function mapping to function->sp mapping.
+ if (HasFn && Record[15]) {
+ if (auto *CMD = dyn_cast<ConstantAsMetadata>(getMDOrNull(Record[15])))
+ if (auto *F = dyn_cast<Function>(CMD->getValue())) {
+ if (F->isMaterializable())
+ // Defer until materialized; unmaterialized functions may not have
+ // metadata.
+ FunctionsWithSPs[F] = SP;
+ else if (!F->empty())
+ F->setSubprogram(SP);
+ }
+ }
break;
}
case bitc::METADATA_LEXICAL_BLOCK: {
if (Record.size() != 5)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DILexicalBlock, Record[0],
(Context, getMDOrNull(Record[1]),
getMDOrNull(Record[2]), Record[3], Record[4])),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_LEXICAL_BLOCK_FILE: {
if (Record.size() != 4)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DILexicalBlockFile, Record[0],
(Context, getMDOrNull(Record[1]),
getMDOrNull(Record[2]), Record[3])),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_NAMESPACE: {
if (Record.size() != 5)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DINamespace, Record[0],
(Context, getMDOrNull(Record[1]),
getMDOrNull(Record[2]), getMDString(Record[3]),
Record[4])),
- NextMDValueNo++);
+ NextMetadataNo++);
+ break;
+ }
+ case bitc::METADATA_MACRO: {
+ if (Record.size() != 5)
+ return error("Invalid record");
+
+ MetadataList.assignValue(
+ GET_OR_DISTINCT(DIMacro, Record[0],
+ (Context, Record[1], Record[2],
+ getMDString(Record[3]), getMDString(Record[4]))),
+ NextMetadataNo++);
+ break;
+ }
+ case bitc::METADATA_MACRO_FILE: {
+ if (Record.size() != 5)
+ return error("Invalid record");
+
+ MetadataList.assignValue(
+ GET_OR_DISTINCT(DIMacroFile, Record[0],
+ (Context, Record[1], Record[2],
+ getMDOrNull(Record[3]), getMDOrNull(Record[4]))),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_TEMPLATE_TYPE: {
if (Record.size() != 3)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(GET_OR_DISTINCT(DITemplateTypeParameter,
- Record[0],
- (Context, getMDString(Record[1]),
- getMDOrNull(Record[2]))),
- NextMDValueNo++);
+ MetadataList.assignValue(GET_OR_DISTINCT(DITemplateTypeParameter,
+ Record[0],
+ (Context, getMDString(Record[1]),
+ getMDOrNull(Record[2]))),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_TEMPLATE_VALUE: {
if (Record.size() != 5)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DITemplateValueParameter, Record[0],
(Context, Record[1], getMDString(Record[2]),
getMDOrNull(Record[3]), getMDOrNull(Record[4]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_GLOBAL_VAR: {
if (Record.size() != 11)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIGlobalVariable, Record[0],
(Context, getMDOrNull(Record[1]),
getMDString(Record[2]), getMDString(Record[3]),
getMDOrNull(Record[4]), Record[5],
getMDOrNull(Record[6]), Record[7], Record[8],
getMDOrNull(Record[9]), getMDOrNull(Record[10]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_LOCAL_VAR: {
// 10th field is for the obseleted 'inlinedAt:' field.
- if (Record.size() != 9 && Record.size() != 10)
- return Error("Invalid record");
+ if (Record.size() < 8 || Record.size() > 10)
+ return error("Invalid record");
- MDValueList.AssignValue(
+ // 2nd field used to be an artificial tag, either DW_TAG_auto_variable or
+ // DW_TAG_arg_variable.
+ bool HasTag = Record.size() > 8;
+ MetadataList.assignValue(
GET_OR_DISTINCT(DILocalVariable, Record[0],
- (Context, Record[1], getMDOrNull(Record[2]),
- getMDString(Record[3]), getMDOrNull(Record[4]),
- Record[5], getMDOrNull(Record[6]), Record[7],
- Record[8])),
- NextMDValueNo++);
+ (Context, getMDOrNull(Record[1 + HasTag]),
+ getMDString(Record[2 + HasTag]),
+ getMDOrNull(Record[3 + HasTag]), Record[4 + HasTag],
+ getMDOrNull(Record[5 + HasTag]), Record[6 + HasTag],
+ Record[7 + HasTag])),
+ NextMetadataNo++);
break;
}
case bitc::METADATA_EXPRESSION: {
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIExpression, Record[0],
(Context, makeArrayRef(Record).slice(1))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_OBJC_PROPERTY: {
if (Record.size() != 8)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIObjCProperty, Record[0],
(Context, getMDString(Record[1]),
getMDOrNull(Record[2]), Record[3],
getMDString(Record[4]), getMDString(Record[5]),
Record[6], getMDOrNull(Record[7]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_IMPORTED_ENTITY: {
if (Record.size() != 6)
- return Error("Invalid record");
+ return error("Invalid record");
- MDValueList.AssignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIImportedEntity, Record[0],
(Context, Record[1], getMDOrNull(Record[2]),
getMDOrNull(Record[3]), Record[4],
getMDString(Record[5]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_STRING: {
std::string String(Record.begin(), Record.end());
llvm::UpgradeMDStringConstant(String);
Metadata *MD = MDString::get(Context, String);
- MDValueList.AssignValue(MD, NextMDValueNo++);
+ MetadataList.assignValue(MD, NextMetadataNo++);
break;
}
case bitc::METADATA_KIND: {
- if (Record.size() < 2)
- return Error("Invalid record");
+ // Support older bitcode files that had METADATA_KIND records in a
+ // block with METADATA_BLOCK_ID.
+ if (std::error_code EC = parseMetadataKindRecord(Record))
+ return EC;
+ break;
+ }
+ }
+ }
+#undef GET_OR_DISTINCT
+}
+
+/// Parse the metadata kinds out of the METADATA_KIND_BLOCK.
+std::error_code BitcodeReader::parseMetadataKinds() {
+ if (Stream.EnterSubBlock(bitc::METADATA_KIND_BLOCK_ID))
+ return error("Invalid record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records.
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
- unsigned Kind = Record[0];
- SmallString<8> Name(Record.begin()+1, Record.end());
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
+ }
- unsigned NewKind = TheModule->getMDKindID(Name.str());
- if (!MDKindMap.insert(std::make_pair(Kind, NewKind)).second)
- return Error("Conflicting METADATA_KIND records");
+ // Read a record.
+ Record.clear();
+ unsigned Code = Stream.readRecord(Entry.ID, Record);
+ switch (Code) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::METADATA_KIND: {
+ if (std::error_code EC = parseMetadataKindRecord(Record))
+ return EC;
break;
}
}
}
-#undef GET_OR_DISTINCT
}
-/// decodeSignRotatedValue - Decode a signed value stored with the sign bit in
-/// the LSB for dense VBR encoding.
+/// Decode a signed value stored with the sign bit in the LSB for dense VBR
+/// encoding.
uint64_t BitcodeReader::decodeSignRotatedValue(uint64_t V) {
if ((V & 1) == 0)
return V >> 1;
return 1ULL << 63;
}
-/// ResolveGlobalAndAliasInits - Resolve all of the initializers for global
-/// values and aliases that we can.
-std::error_code BitcodeReader::ResolveGlobalAndAliasInits() {
+/// Resolve all of the initializers for global values and aliases that we can.
+std::error_code BitcodeReader::resolveGlobalAndAliasInits() {
std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInitWorklist;
std::vector<std::pair<GlobalAlias*, unsigned> > AliasInitWorklist;
std::vector<std::pair<Function*, unsigned> > FunctionPrefixWorklist;
std::vector<std::pair<Function*, unsigned> > FunctionPrologueWorklist;
+ std::vector<std::pair<Function*, unsigned> > FunctionPersonalityFnWorklist;
GlobalInitWorklist.swap(GlobalInits);
AliasInitWorklist.swap(AliasInits);
FunctionPrefixWorklist.swap(FunctionPrefixes);
FunctionPrologueWorklist.swap(FunctionPrologues);
+ FunctionPersonalityFnWorklist.swap(FunctionPersonalityFns);
while (!GlobalInitWorklist.empty()) {
unsigned ValID = GlobalInitWorklist.back().second;
if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]))
GlobalInitWorklist.back().first->setInitializer(C);
else
- return Error("Expected a constant");
+ return error("Expected a constant");
}
GlobalInitWorklist.pop_back();
}
} else {
Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]);
if (!C)
- return Error("Expected a constant");
+ return error("Expected a constant");
GlobalAlias *Alias = AliasInitWorklist.back().first;
if (C->getType() != Alias->getType())
- return Error("Alias and aliasee types don't match");
+ return error("Alias and aliasee types don't match");
Alias->setAliasee(C);
}
AliasInitWorklist.pop_back();
if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]))
FunctionPrefixWorklist.back().first->setPrefixData(C);
else
- return Error("Expected a constant");
+ return error("Expected a constant");
}
FunctionPrefixWorklist.pop_back();
}
if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]))
FunctionPrologueWorklist.back().first->setPrologueData(C);
else
- return Error("Expected a constant");
+ return error("Expected a constant");
}
FunctionPrologueWorklist.pop_back();
}
+ while (!FunctionPersonalityFnWorklist.empty()) {
+ unsigned ValID = FunctionPersonalityFnWorklist.back().second;
+ if (ValID >= ValueList.size()) {
+ FunctionPersonalityFns.push_back(FunctionPersonalityFnWorklist.back());
+ } else {
+ if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]))
+ FunctionPersonalityFnWorklist.back().first->setPersonalityFn(C);
+ else
+ return error("Expected a constant");
+ }
+ FunctionPersonalityFnWorklist.pop_back();
+ }
+
return std::error_code();
}
-static APInt ReadWideAPInt(ArrayRef<uint64_t> Vals, unsigned TypeBits) {
+static APInt readWideAPInt(ArrayRef<uint64_t> Vals, unsigned TypeBits) {
SmallVector<uint64_t, 8> Words(Vals.size());
std::transform(Vals.begin(), Vals.end(), Words.begin(),
BitcodeReader::decodeSignRotatedValue);
return APInt(TypeBits, Words);
}
-std::error_code BitcodeReader::ParseConstants() {
+std::error_code BitcodeReader::parseConstants() {
if (Stream.EnterSubBlock(bitc::CONSTANTS_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<uint64_t, 64> Record;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
if (NextCstNo != ValueList.size())
- return Error("Invalid ronstant reference");
+ return error("Invalid ronstant reference");
// Once all the constants have been read, go through and resolve forward
// references.
- ValueList.ResolveConstantForwardRefs();
+ ValueList.resolveConstantForwardRefs();
return std::error_code();
case BitstreamEntry::Record:
// The interesting case.
break;
case bitc::CST_CODE_SETTYPE: // SETTYPE: [typeid]
if (Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
if (Record[0] >= TypeList.size() || !TypeList[Record[0]])
- return Error("Invalid record");
+ return error("Invalid record");
CurTy = TypeList[Record[0]];
continue; // Skip the ValueList manipulation.
case bitc::CST_CODE_NULL: // NULL
break;
case bitc::CST_CODE_INTEGER: // INTEGER: [intval]
if (!CurTy->isIntegerTy() || Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
V = ConstantInt::get(CurTy, decodeSignRotatedValue(Record[0]));
break;
case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval]
if (!CurTy->isIntegerTy() || Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
- APInt VInt = ReadWideAPInt(Record,
- cast<IntegerType>(CurTy)->getBitWidth());
+ APInt VInt =
+ readWideAPInt(Record, cast<IntegerType>(CurTy)->getBitWidth());
V = ConstantInt::get(Context, VInt);
break;
}
case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval]
if (Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
if (CurTy->isHalfTy())
V = ConstantFP::get(Context, APFloat(APFloat::IEEEhalf,
APInt(16, (uint16_t)Record[0])));
case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number]
if (Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
unsigned Size = Record.size();
SmallVector<Constant*, 16> Elts;
case bitc::CST_CODE_STRING: // STRING: [values]
case bitc::CST_CODE_CSTRING: { // CSTRING: [values]
if (Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
SmallString<16> Elts(Record.begin(), Record.end());
V = ConstantDataArray::getString(Context, Elts,
}
case bitc::CST_CODE_DATA: {// DATA: [n x value]
if (Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
Type *EltTy = cast<SequentialType>(CurTy)->getElementType();
unsigned Size = Record.size();
else
V = ConstantDataArray::get(Context, Elts);
} else {
- return Error("Invalid type for value");
+ return error("Invalid type for value");
}
break;
}
case bitc::CST_CODE_CE_BINOP: { // CE_BINOP: [opcode, opval, opval]
if (Record.size() < 3)
- return Error("Invalid record");
- int Opc = GetDecodedBinaryOpcode(Record[0], CurTy);
+ return error("Invalid record");
+ int Opc = getDecodedBinaryOpcode(Record[0], CurTy);
if (Opc < 0) {
V = UndefValue::get(CurTy); // Unknown binop.
} else {
}
case bitc::CST_CODE_CE_CAST: { // CE_CAST: [opcode, opty, opval]
if (Record.size() < 3)
- return Error("Invalid record");
- int Opc = GetDecodedCastOpcode(Record[0]);
+ return error("Invalid record");
+ int Opc = getDecodedCastOpcode(Record[0]);
if (Opc < 0) {
V = UndefValue::get(CurTy); // Unknown cast.
} else {
Type *OpTy = getTypeByID(Record[1]);
if (!OpTy)
- return Error("Invalid record");
+ return error("Invalid record");
Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy);
V = UpgradeBitCastExpr(Opc, Op, CurTy);
if (!V) V = ConstantExpr::getCast(Opc, Op, CurTy);
while (OpNum != Record.size()) {
Type *ElTy = getTypeByID(Record[OpNum++]);
if (!ElTy)
- return Error("Invalid record");
+ return error("Invalid record");
Elts.push_back(ValueList.getConstantFwdRef(Record[OpNum++], ElTy));
}
PointeeType !=
cast<SequentialType>(Elts[0]->getType()->getScalarType())
->getElementType())
- return Error("Explicit gep operator type does not match pointee type "
+ return error("Explicit gep operator type does not match pointee type "
"of pointer operand");
ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
}
case bitc::CST_CODE_CE_SELECT: { // CE_SELECT: [opval#, opval#, opval#]
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
Type *SelectorTy = Type::getInt1Ty(Context);
- // If CurTy is a vector of length n, then Record[0] must be a <n x i1>
- // vector. Otherwise, it must be a single bit.
+ // The selector might be an i1 or an <n x i1>
+ // Get the type from the ValueList before getting a forward ref.
if (VectorType *VTy = dyn_cast<VectorType>(CurTy))
- SelectorTy = VectorType::get(Type::getInt1Ty(Context),
- VTy->getNumElements());
+ if (Value *V = ValueList[Record[0]])
+ if (SelectorTy != V->getType())
+ SelectorTy = VectorType::get(SelectorTy, VTy->getNumElements());
V = ConstantExpr::getSelect(ValueList.getConstantFwdRef(Record[0],
SelectorTy),
case bitc::CST_CODE_CE_EXTRACTELT
: { // CE_EXTRACTELT: [opty, opval, opty, opval]
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
VectorType *OpTy =
dyn_cast_or_null<VectorType>(getTypeByID(Record[0]));
if (!OpTy)
- return Error("Invalid record");
+ return error("Invalid record");
Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
Constant *Op1 = nullptr;
if (Record.size() == 4) {
Type *IdxTy = getTypeByID(Record[2]);
if (!IdxTy)
- return Error("Invalid record");
+ return error("Invalid record");
Op1 = ValueList.getConstantFwdRef(Record[3], IdxTy);
} else // TODO: Remove with llvm 4.0
Op1 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context));
if (!Op1)
- return Error("Invalid record");
+ return error("Invalid record");
V = ConstantExpr::getExtractElement(Op0, Op1);
break;
}
: { // CE_INSERTELT: [opval, opval, opty, opval]
VectorType *OpTy = dyn_cast<VectorType>(CurTy);
if (Record.size() < 3 || !OpTy)
- return Error("Invalid record");
+ return error("Invalid record");
Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy);
Constant *Op1 = ValueList.getConstantFwdRef(Record[1],
OpTy->getElementType());
if (Record.size() == 4) {
Type *IdxTy = getTypeByID(Record[2]);
if (!IdxTy)
- return Error("Invalid record");
+ return error("Invalid record");
Op2 = ValueList.getConstantFwdRef(Record[3], IdxTy);
} else // TODO: Remove with llvm 4.0
Op2 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context));
if (!Op2)
- return Error("Invalid record");
+ return error("Invalid record");
V = ConstantExpr::getInsertElement(Op0, Op1, Op2);
break;
}
case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval]
VectorType *OpTy = dyn_cast<VectorType>(CurTy);
if (Record.size() < 3 || !OpTy)
- return Error("Invalid record");
+ return error("Invalid record");
Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy);
Constant *Op1 = ValueList.getConstantFwdRef(Record[1], OpTy);
Type *ShufTy = VectorType::get(Type::getInt32Ty(Context),
VectorType *OpTy =
dyn_cast_or_null<VectorType>(getTypeByID(Record[0]));
if (Record.size() < 4 || !RTy || !OpTy)
- return Error("Invalid record");
+ return error("Invalid record");
Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy);
Type *ShufTy = VectorType::get(Type::getInt32Ty(Context),
}
case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred]
if (Record.size() < 4)
- return Error("Invalid record");
+ return error("Invalid record");
Type *OpTy = getTypeByID(Record[0]);
if (!OpTy)
- return Error("Invalid record");
+ return error("Invalid record");
Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy);
// FIXME: Remove with the 4.0 release.
case bitc::CST_CODE_INLINEASM_OLD: {
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
std::string AsmStr, ConstrStr;
bool HasSideEffects = Record[0] & 1;
bool IsAlignStack = Record[0] >> 1;
unsigned AsmStrSize = Record[1];
if (2+AsmStrSize >= Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
unsigned ConstStrSize = Record[2+AsmStrSize];
if (3+AsmStrSize+ConstStrSize > Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
for (unsigned i = 0; i != AsmStrSize; ++i)
AsmStr += (char)Record[2+i];
// inteldialect).
case bitc::CST_CODE_INLINEASM: {
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
std::string AsmStr, ConstrStr;
bool HasSideEffects = Record[0] & 1;
bool IsAlignStack = (Record[0] >> 1) & 1;
unsigned AsmDialect = Record[0] >> 2;
unsigned AsmStrSize = Record[1];
if (2+AsmStrSize >= Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
unsigned ConstStrSize = Record[2+AsmStrSize];
if (3+AsmStrSize+ConstStrSize > Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
for (unsigned i = 0; i != AsmStrSize; ++i)
AsmStr += (char)Record[2+i];
}
case bitc::CST_CODE_BLOCKADDRESS:{
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
Type *FnTy = getTypeByID(Record[0]);
if (!FnTy)
- return Error("Invalid record");
+ return error("Invalid record");
Function *Fn =
dyn_cast_or_null<Function>(ValueList.getConstantFwdRef(Record[1],FnTy));
if (!Fn)
- return Error("Invalid record");
-
- // Don't let Fn get dematerialized.
- BlockAddressesTaken.insert(Fn);
+ return error("Invalid record");
// If the function is already parsed we can insert the block address right
// away.
unsigned BBID = Record[2];
if (!BBID)
// Invalid reference to entry block.
- return Error("Invalid ID");
+ return error("Invalid ID");
if (!Fn->empty()) {
Function::iterator BBI = Fn->begin(), BBE = Fn->end();
for (size_t I = 0, E = BBID; I != E; ++I) {
if (BBI == BBE)
- return Error("Invalid ID");
+ return error("Invalid ID");
++BBI;
}
- BB = BBI;
+ BB = &*BBI;
} else {
// Otherwise insert a placeholder and remember it so it can be inserted
// when the function is parsed.
}
}
- ValueList.AssignValue(V, NextCstNo);
+ ValueList.assignValue(V, NextCstNo);
++NextCstNo;
}
}
-std::error_code BitcodeReader::ParseUseLists() {
+std::error_code BitcodeReader::parseUseLists() {
if (Stream.EnterSubBlock(bitc::USELIST_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
// Read all the records.
SmallVector<uint64_t, 64> Record;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
return std::error_code();
case BitstreamEntry::Record:
unsigned RecordLength = Record.size();
if (RecordLength < 3)
// Records should have at least an ID and two indexes.
- return Error("Invalid record");
+ return error("Invalid record");
unsigned ID = Record.back();
Record.pop_back();
V = ValueList[ID];
unsigned NumUses = 0;
SmallDenseMap<const Use *, unsigned, 16> Order;
- for (const Use &U : V->uses()) {
+ for (const Use &U : V->materialized_uses()) {
if (++NumUses > Record.size())
break;
Order[&U] = Record[NumUses - 1];
// Skip over the block for now.
if (Stream.SkipBlock())
- return Error("Invalid record");
+ return error("Invalid record");
return std::error_code();
}
for (uint64_t BitPos : DeferredMetadataInfo) {
// Move the bit stream to the saved position.
Stream.JumpToBit(BitPos);
- if (std::error_code EC = ParseMetadata())
+ if (std::error_code EC = parseMetadata(true))
return EC;
}
DeferredMetadataInfo.clear();
void BitcodeReader::setStripDebugInfo() { StripDebugInfo = true; }
-/// RememberAndSkipFunctionBody - When we see the block for a function body,
-/// remember where it is and then skip it. This lets us lazily deserialize the
-/// functions.
-std::error_code BitcodeReader::RememberAndSkipFunctionBody() {
+void BitcodeReader::saveMetadataList(
+ DenseMap<const Metadata *, unsigned> &MetadataToIDs, bool OnlyTempMD) {
+ for (unsigned ID = 0; ID < MetadataList.size(); ++ID) {
+ Metadata *MD = MetadataList[ID];
+ auto *N = dyn_cast_or_null<MDNode>(MD);
+ // Save all values if !OnlyTempMD, otherwise just the temporary metadata.
+ if (!OnlyTempMD || (N && N->isTemporary())) {
+ // Will call this after materializing each function, in order to
+ // handle remapping of the function's instructions/metadata.
+ // See if we already have an entry in that case.
+ if (OnlyTempMD && MetadataToIDs.count(MD)) {
+ assert(MetadataToIDs[MD] == ID && "Inconsistent metadata value id");
+ continue;
+ }
+ MetadataToIDs[MD] = ID;
+ }
+ }
+}
+
+/// When we see the block for a function body, remember where it is and then
+/// skip it. This lets us lazily deserialize the functions.
+std::error_code BitcodeReader::rememberAndSkipFunctionBody() {
// Get the function we are talking about.
if (FunctionsWithBodies.empty())
- return Error("Insufficient function protos");
+ return error("Insufficient function protos");
Function *Fn = FunctionsWithBodies.back();
FunctionsWithBodies.pop_back();
// Save the current stream state.
uint64_t CurBit = Stream.GetCurrentBitNo();
+ assert(
+ (DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) &&
+ "Mismatch between VST and scanned function offsets");
DeferredFunctionInfo[Fn] = CurBit;
// Skip over the function block for now.
if (Stream.SkipBlock())
- return Error("Invalid record");
+ return error("Invalid record");
return std::error_code();
}
-std::error_code BitcodeReader::GlobalCleanup() {
+std::error_code BitcodeReader::globalCleanup() {
// Patch the initializers for globals and aliases up.
- ResolveGlobalAndAliasInits();
+ resolveGlobalAndAliasInits();
if (!GlobalInits.empty() || !AliasInits.empty())
- return Error("Malformed global initializer set");
+ return error("Malformed global initializer set");
// Look for intrinsic functions which need to be upgraded at some point
for (Function &F : *TheModule) {
Function *NewFn;
if (UpgradeIntrinsicFunction(&F, NewFn))
- UpgradedIntrinsics.push_back(std::make_pair(&F, NewFn));
+ UpgradedIntrinsics[&F] = NewFn;
}
// Look for global variables which need to be renamed.
return std::error_code();
}
-std::error_code BitcodeReader::ParseModule(bool Resume,
+/// Support for lazy parsing of function bodies. This is required if we
+/// either have an old bitcode file without a VST forward declaration record,
+/// or if we have an anonymous function being materialized, since anonymous
+/// functions do not have a name and are therefore not in the VST.
+std::error_code BitcodeReader::rememberAndSkipFunctionBodies() {
+ Stream.JumpToBit(NextUnreadBit);
+
+ if (Stream.AtEndOfStream())
+ return error("Could not find function in stream");
+
+ if (!SeenFirstFunctionBody)
+ return error("Trying to materialize functions before seeing function blocks");
+
+ // An old bitcode file with the symbol table at the end would have
+ // finished the parse greedily.
+ assert(SeenValueSymbolTable);
+
+ SmallVector<uint64_t, 64> Record;
+
+ while (1) {
+ BitstreamEntry Entry = Stream.advance();
+ switch (Entry.Kind) {
+ default:
+ return error("Expect SubBlock");
+ case BitstreamEntry::SubBlock:
+ switch (Entry.ID) {
+ default:
+ return error("Expect function block");
+ case bitc::FUNCTION_BLOCK_ID:
+ if (std::error_code EC = rememberAndSkipFunctionBody())
+ return EC;
+ NextUnreadBit = Stream.GetCurrentBitNo();
+ return std::error_code();
+ }
+ }
+ }
+}
+
+std::error_code BitcodeReader::parseBitcodeVersion() {
+ if (Stream.EnterSubBlock(bitc::IDENTIFICATION_BLOCK_ID))
+ return error("Invalid record");
+
+ // Read all the records.
+ SmallVector<uint64_t, 64> Record;
+ while (1) {
+ BitstreamEntry Entry = Stream.advance();
+
+ switch (Entry.Kind) {
+ default:
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
+ }
+
+ // Read a record.
+ Record.clear();
+ unsigned BitCode = Stream.readRecord(Entry.ID, Record);
+ switch (BitCode) {
+ default: // Default behavior: reject
+ return error("Invalid value");
+ case bitc::IDENTIFICATION_CODE_STRING: { // IDENTIFICATION: [strchr x
+ // N]
+ convertToString(Record, 0, ProducerIdentification);
+ break;
+ }
+ case bitc::IDENTIFICATION_CODE_EPOCH: { // EPOCH: [epoch#]
+ unsigned epoch = (unsigned)Record[0];
+ if (epoch != bitc::BITCODE_CURRENT_EPOCH) {
+ return error(
+ Twine("Incompatible epoch: Bitcode '") + Twine(epoch) +
+ "' vs current: '" + Twine(bitc::BITCODE_CURRENT_EPOCH) + "'");
+ }
+ }
+ }
+ }
+}
+
+std::error_code BitcodeReader::parseModule(uint64_t ResumeBit,
bool ShouldLazyLoadMetadata) {
- if (Resume)
- Stream.JumpToBit(NextUnreadBit);
+ if (ResumeBit)
+ Stream.JumpToBit(ResumeBit);
else if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<uint64_t, 64> Record;
std::vector<std::string> SectionTable;
switch (Entry.Kind) {
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
- return GlobalCleanup();
+ return globalCleanup();
case BitstreamEntry::SubBlock:
switch (Entry.ID) {
default: // Skip unknown content.
if (Stream.SkipBlock())
- return Error("Invalid record");
+ return error("Invalid record");
break;
case bitc::BLOCKINFO_BLOCK_ID:
if (Stream.ReadBlockInfoBlock())
- return Error("Malformed block");
+ return error("Malformed block");
break;
case bitc::PARAMATTR_BLOCK_ID:
- if (std::error_code EC = ParseAttributeBlock())
+ if (std::error_code EC = parseAttributeBlock())
return EC;
break;
case bitc::PARAMATTR_GROUP_BLOCK_ID:
- if (std::error_code EC = ParseAttributeGroupBlock())
+ if (std::error_code EC = parseAttributeGroupBlock())
return EC;
break;
case bitc::TYPE_BLOCK_ID_NEW:
- if (std::error_code EC = ParseTypeTable())
+ if (std::error_code EC = parseTypeTable())
return EC;
break;
case bitc::VALUE_SYMTAB_BLOCK_ID:
- if (std::error_code EC = ParseValueSymbolTable())
- return EC;
- SeenValueSymbolTable = true;
+ if (!SeenValueSymbolTable) {
+ // Either this is an old form VST without function index and an
+ // associated VST forward declaration record (which would have caused
+ // the VST to be jumped to and parsed before it was encountered
+ // normally in the stream), or there were no function blocks to
+ // trigger an earlier parsing of the VST.
+ assert(VSTOffset == 0 || FunctionsWithBodies.empty());
+ if (std::error_code EC = parseValueSymbolTable())
+ return EC;
+ SeenValueSymbolTable = true;
+ } else {
+ // We must have had a VST forward declaration record, which caused
+ // the parser to jump to and parse the VST earlier.
+ assert(VSTOffset > 0);
+ if (Stream.SkipBlock())
+ return error("Invalid record");
+ }
break;
case bitc::CONSTANTS_BLOCK_ID:
- if (std::error_code EC = ParseConstants())
+ if (std::error_code EC = parseConstants())
return EC;
- if (std::error_code EC = ResolveGlobalAndAliasInits())
+ if (std::error_code EC = resolveGlobalAndAliasInits())
return EC;
break;
case bitc::METADATA_BLOCK_ID:
break;
}
assert(DeferredMetadataInfo.empty() && "Unexpected deferred metadata");
- if (std::error_code EC = ParseMetadata())
+ if (std::error_code EC = parseMetadata(true))
+ return EC;
+ break;
+ case bitc::METADATA_KIND_BLOCK_ID:
+ if (std::error_code EC = parseMetadataKinds())
return EC;
break;
case bitc::FUNCTION_BLOCK_ID:
// FunctionsWithBodies list.
if (!SeenFirstFunctionBody) {
std::reverse(FunctionsWithBodies.begin(), FunctionsWithBodies.end());
- if (std::error_code EC = GlobalCleanup())
+ if (std::error_code EC = globalCleanup())
return EC;
SeenFirstFunctionBody = true;
}
- if (std::error_code EC = RememberAndSkipFunctionBody())
+ if (VSTOffset > 0) {
+ // If we have a VST forward declaration record, make sure we
+ // parse the VST now if we haven't already. It is needed to
+ // set up the DeferredFunctionInfo vector for lazy reading.
+ if (!SeenValueSymbolTable) {
+ if (std::error_code EC =
+ BitcodeReader::parseValueSymbolTable(VSTOffset))
+ return EC;
+ SeenValueSymbolTable = true;
+ // Fall through so that we record the NextUnreadBit below.
+ // This is necessary in case we have an anonymous function that
+ // is later materialized. Since it will not have a VST entry we
+ // need to fall back to the lazy parse to find its offset.
+ } else {
+ // If we have a VST forward declaration record, but have already
+ // parsed the VST (just above, when the first function body was
+ // encountered here), then we are resuming the parse after
+ // materializing functions. The ResumeBit points to the
+ // start of the last function block recorded in the
+ // DeferredFunctionInfo map. Skip it.
+ if (Stream.SkipBlock())
+ return error("Invalid record");
+ continue;
+ }
+ }
+
+ // Support older bitcode files that did not have the function
+ // index in the VST, nor a VST forward declaration record, as
+ // well as anonymous functions that do not have VST entries.
+ // Build the DeferredFunctionInfo vector on the fly.
+ if (std::error_code EC = rememberAndSkipFunctionBody())
return EC;
- // For streaming bitcode, suspend parsing when we reach the function
- // bodies. Subsequent materialization calls will resume it when
- // necessary. For streaming, the function bodies must be at the end of
- // the bitcode. If the bitcode file is old, the symbol table will be
- // at the end instead and will not have been seen yet. In this case,
- // just finish the parse now.
- if (LazyStreamer && SeenValueSymbolTable) {
+
+ // Suspend parsing when we reach the function bodies. Subsequent
+ // materialization calls will resume it when necessary. If the bitcode
+ // file is old, the symbol table will be at the end instead and will not
+ // have been seen yet. In this case, just finish the parse now.
+ if (SeenValueSymbolTable) {
NextUnreadBit = Stream.GetCurrentBitNo();
return std::error_code();
}
break;
case bitc::USELIST_BLOCK_ID:
- if (std::error_code EC = ParseUseLists())
+ if (std::error_code EC = parseUseLists())
+ return EC;
+ break;
+ case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID:
+ if (std::error_code EC = parseOperandBundleTags())
return EC;
break;
}
// Read a record.
- switch (Stream.readRecord(Entry.ID, Record)) {
+ auto BitCode = Stream.readRecord(Entry.ID, Record);
+ switch (BitCode) {
default: break; // Default behavior, ignore unknown content.
case bitc::MODULE_CODE_VERSION: { // VERSION: [version#]
if (Record.size() < 1)
- return Error("Invalid record");
+ return error("Invalid record");
// Only version #0 and #1 are supported so far.
unsigned module_version = Record[0];
switch (module_version) {
default:
- return Error("Invalid value");
+ return error("Invalid value");
case 0:
UseRelativeIDs = false;
break;
}
case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N]
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
TheModule->setTargetTriple(S);
break;
}
case bitc::MODULE_CODE_DATALAYOUT: { // DATALAYOUT: [strchr x N]
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
TheModule->setDataLayout(S);
break;
}
case bitc::MODULE_CODE_ASM: { // ASM: [strchr x N]
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
TheModule->setModuleInlineAsm(S);
break;
}
case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N]
// FIXME: Remove in 4.0.
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
// Ignore value.
break;
}
case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N]
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
SectionTable.push_back(S);
break;
}
case bitc::MODULE_CODE_GCNAME: { // SECTIONNAME: [strchr x N]
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
GCTable.push_back(S);
break;
}
case bitc::MODULE_CODE_COMDAT: { // COMDAT: [selection_kind, name]
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
Comdat::SelectionKind SK = getDecodedComdatSelectionKind(Record[0]);
unsigned ComdatNameSize = Record[1];
std::string ComdatName;
// comdat]
case bitc::MODULE_CODE_GLOBALVAR: {
if (Record.size() < 6)
- return Error("Invalid record");
+ return error("Invalid record");
Type *Ty = getTypeByID(Record[0]);
if (!Ty)
- return Error("Invalid record");
+ return error("Invalid record");
bool isConstant = Record[1] & 1;
bool explicitType = Record[1] & 2;
unsigned AddressSpace;
AddressSpace = Record[1] >> 2;
} else {
if (!Ty->isPointerTy())
- return Error("Invalid type for value");
+ return error("Invalid type for value");
AddressSpace = cast<PointerType>(Ty)->getAddressSpace();
Ty = cast<PointerType>(Ty)->getElementType();
}
std::string Section;
if (Record[5]) {
if (Record[5]-1 >= SectionTable.size())
- return Error("Invalid ID");
+ return error("Invalid ID");
Section = SectionTable[Record[5]-1];
}
GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility;
// Local linkage must have default visibility.
if (Record.size() > 6 && !GlobalValue::isLocalLinkage(Linkage))
// FIXME: Change to an error if non-default in 4.0.
- Visibility = GetDecodedVisibility(Record[6]);
+ Visibility = getDecodedVisibility(Record[6]);
GlobalVariable::ThreadLocalMode TLM = GlobalVariable::NotThreadLocal;
if (Record.size() > 7)
- TLM = GetDecodedThreadLocalMode(Record[7]);
+ TLM = getDecodedThreadLocalMode(Record[7]);
bool UnnamedAddr = false;
if (Record.size() > 8)
NewGV->setUnnamedAddr(UnnamedAddr);
if (Record.size() > 10)
- NewGV->setDLLStorageClass(GetDecodedDLLStorageClass(Record[10]));
+ NewGV->setDLLStorageClass(getDecodedDLLStorageClass(Record[10]));
else
- UpgradeDLLImportExportLinkage(NewGV, RawLinkage);
+ upgradeDLLImportExportLinkage(NewGV, RawLinkage);
ValueList.push_back(NewGV);
if (Record.size() > 11) {
if (unsigned ComdatID = Record[11]) {
if (ComdatID > ComdatList.size())
- return Error("Invalid global variable comdat ID");
+ return error("Invalid global variable comdat ID");
NewGV->setComdat(ComdatList[ComdatID - 1]);
}
} else if (hasImplicitComdat(RawLinkage)) {
// prologuedata, dllstorageclass, comdat, prefixdata]
case bitc::MODULE_CODE_FUNCTION: {
if (Record.size() < 8)
- return Error("Invalid record");
+ return error("Invalid record");
Type *Ty = getTypeByID(Record[0]);
if (!Ty)
- return Error("Invalid record");
+ return error("Invalid record");
if (auto *PTy = dyn_cast<PointerType>(Ty))
Ty = PTy->getElementType();
auto *FTy = dyn_cast<FunctionType>(Ty);
if (!FTy)
- return Error("Invalid type for value");
+ return error("Invalid type for value");
+ auto CC = static_cast<CallingConv::ID>(Record[1]);
+ if (CC & ~CallingConv::MaxID)
+ return error("Invalid calling convention ID");
Function *Func = Function::Create(FTy, GlobalValue::ExternalLinkage,
"", TheModule);
- Func->setCallingConv(static_cast<CallingConv::ID>(Record[1]));
+ Func->setCallingConv(CC);
bool isProto = Record[2];
uint64_t RawLinkage = Record[3];
Func->setLinkage(getDecodedLinkage(RawLinkage));
Func->setAlignment(Alignment);
if (Record[6]) {
if (Record[6]-1 >= SectionTable.size())
- return Error("Invalid ID");
+ return error("Invalid ID");
Func->setSection(SectionTable[Record[6]-1]);
}
// Local linkage must have default visibility.
if (!Func->hasLocalLinkage())
// FIXME: Change to an error if non-default in 4.0.
- Func->setVisibility(GetDecodedVisibility(Record[7]));
+ Func->setVisibility(getDecodedVisibility(Record[7]));
if (Record.size() > 8 && Record[8]) {
if (Record[8]-1 >= GCTable.size())
- return Error("Invalid ID");
+ return error("Invalid ID");
Func->setGC(GCTable[Record[8]-1].c_str());
}
bool UnnamedAddr = false;
FunctionPrologues.push_back(std::make_pair(Func, Record[10]-1));
if (Record.size() > 11)
- Func->setDLLStorageClass(GetDecodedDLLStorageClass(Record[11]));
+ Func->setDLLStorageClass(getDecodedDLLStorageClass(Record[11]));
else
- UpgradeDLLImportExportLinkage(Func, RawLinkage);
+ upgradeDLLImportExportLinkage(Func, RawLinkage);
if (Record.size() > 12) {
if (unsigned ComdatID = Record[12]) {
if (ComdatID > ComdatList.size())
- return Error("Invalid function comdat ID");
+ return error("Invalid function comdat ID");
Func->setComdat(ComdatList[ComdatID - 1]);
}
} else if (hasImplicitComdat(RawLinkage)) {
if (Record.size() > 13 && Record[13] != 0)
FunctionPrefixes.push_back(std::make_pair(Func, Record[13]-1));
+ if (Record.size() > 14 && Record[14] != 0)
+ FunctionPersonalityFns.push_back(std::make_pair(Func, Record[14] - 1));
+
ValueList.push_back(Func);
// If this is a function with a body, remember the prototype we are
if (!isProto) {
Func->setIsMaterializable(true);
FunctionsWithBodies.push_back(Func);
- if (LazyStreamer)
- DeferredFunctionInfo[Func] = 0;
+ DeferredFunctionInfo[Func] = 0;
}
break;
}
- // ALIAS: [alias type, aliasee val#, linkage]
- // ALIAS: [alias type, aliasee val#, linkage, visibility, dllstorageclass]
- case bitc::MODULE_CODE_ALIAS: {
- if (Record.size() < 3)
- return Error("Invalid record");
- Type *Ty = getTypeByID(Record[0]);
+ // ALIAS: [alias type, addrspace, aliasee val#, linkage]
+ // ALIAS: [alias type, addrspace, aliasee val#, linkage, visibility, dllstorageclass]
+ case bitc::MODULE_CODE_ALIAS:
+ case bitc::MODULE_CODE_ALIAS_OLD: {
+ bool NewRecord = BitCode == bitc::MODULE_CODE_ALIAS;
+ if (Record.size() < (3 + (unsigned)NewRecord))
+ return error("Invalid record");
+ unsigned OpNum = 0;
+ Type *Ty = getTypeByID(Record[OpNum++]);
if (!Ty)
- return Error("Invalid record");
- auto *PTy = dyn_cast<PointerType>(Ty);
- if (!PTy)
- return Error("Invalid type for value");
+ return error("Invalid record");
+
+ unsigned AddrSpace;
+ if (!NewRecord) {
+ auto *PTy = dyn_cast<PointerType>(Ty);
+ if (!PTy)
+ return error("Invalid type for value");
+ Ty = PTy->getElementType();
+ AddrSpace = PTy->getAddressSpace();
+ } else {
+ AddrSpace = Record[OpNum++];
+ }
- auto *NewGA =
- GlobalAlias::create(PTy, getDecodedLinkage(Record[2]), "", TheModule);
+ auto Val = Record[OpNum++];
+ auto Linkage = Record[OpNum++];
+ auto *NewGA = GlobalAlias::create(
+ Ty, AddrSpace, getDecodedLinkage(Linkage), "", TheModule);
// Old bitcode files didn't have visibility field.
// Local linkage must have default visibility.
- if (Record.size() > 3 && !NewGA->hasLocalLinkage())
- // FIXME: Change to an error if non-default in 4.0.
- NewGA->setVisibility(GetDecodedVisibility(Record[3]));
- if (Record.size() > 4)
- NewGA->setDLLStorageClass(GetDecodedDLLStorageClass(Record[4]));
+ if (OpNum != Record.size()) {
+ auto VisInd = OpNum++;
+ if (!NewGA->hasLocalLinkage())
+ // FIXME: Change to an error if non-default in 4.0.
+ NewGA->setVisibility(getDecodedVisibility(Record[VisInd]));
+ }
+ if (OpNum != Record.size())
+ NewGA->setDLLStorageClass(getDecodedDLLStorageClass(Record[OpNum++]));
else
- UpgradeDLLImportExportLinkage(NewGA, Record[2]);
- if (Record.size() > 5)
- NewGA->setThreadLocalMode(GetDecodedThreadLocalMode(Record[5]));
- if (Record.size() > 6)
- NewGA->setUnnamedAddr(Record[6]);
+ upgradeDLLImportExportLinkage(NewGA, Linkage);
+ if (OpNum != Record.size())
+ NewGA->setThreadLocalMode(getDecodedThreadLocalMode(Record[OpNum++]));
+ if (OpNum != Record.size())
+ NewGA->setUnnamedAddr(Record[OpNum++]);
ValueList.push_back(NewGA);
- AliasInits.push_back(std::make_pair(NewGA, Record[1]));
+ AliasInits.push_back(std::make_pair(NewGA, Val));
break;
}
/// MODULE_CODE_PURGEVALS: [numvals]
case bitc::MODULE_CODE_PURGEVALS:
// Trim down the value list to the specified size.
if (Record.size() < 1 || Record[0] > ValueList.size())
- return Error("Invalid record");
+ return error("Invalid record");
ValueList.shrinkTo(Record[0]);
break;
+ /// MODULE_CODE_VSTOFFSET: [offset]
+ case bitc::MODULE_CODE_VSTOFFSET:
+ if (Record.size() < 1)
+ return error("Invalid record");
+ VSTOffset = Record[0];
+ break;
+ /// MODULE_CODE_METADATA_VALUES: [numvals]
+ case bitc::MODULE_CODE_METADATA_VALUES:
+ if (Record.size() < 1)
+ return error("Invalid record");
+ assert(!IsMetadataMaterialized);
+ // This record contains the number of metadata values in the module-level
+ // METADATA_BLOCK. It is used to support lazy parsing of metadata as
+ // a postpass, where we will parse function-level metadata first.
+ // This is needed because the ids of metadata are assigned implicitly
+ // based on their ordering in the bitcode, with the function-level
+ // metadata ids starting after the module-level metadata ids. Otherwise,
+ // we would have to parse the module-level metadata block to prime the
+ // MetadataList when we are lazy loading metadata during function
+ // importing. Initialize the MetadataList size here based on the
+ // record value, regardless of whether we are doing lazy metadata
+ // loading, so that we have consistent handling and assertion
+ // checking in parseMetadata for module-level metadata.
+ NumModuleMDs = Record[0];
+ SeenModuleValuesRecord = true;
+ assert(MetadataList.size() == 0);
+ MetadataList.resize(NumModuleMDs);
+ break;
}
Record.clear();
}
}
-std::error_code BitcodeReader::ParseBitcodeInto(Module *M,
- bool ShouldLazyLoadMetadata) {
- TheModule = nullptr;
-
- if (std::error_code EC = InitStream())
- return EC;
-
+/// Helper to read the header common to all bitcode files.
+static bool hasValidBitcodeHeader(BitstreamCursor &Stream) {
// Sniff for the signature.
if (Stream.Read(8) != 'B' ||
Stream.Read(8) != 'C' ||
Stream.Read(4) != 0xC ||
Stream.Read(4) != 0xE ||
Stream.Read(4) != 0xD)
- return Error("Invalid bitcode signature");
+ return false;
+ return true;
+}
- // We expect a number of well-defined blocks, though we don't necessarily
- // need to understand them all.
- while (1) {
+std::error_code
+BitcodeReader::parseBitcodeInto(std::unique_ptr<DataStreamer> Streamer,
+ Module *M, bool ShouldLazyLoadMetadata) {
+ TheModule = M;
+
+ if (std::error_code EC = initStream(std::move(Streamer)))
+ return EC;
+
+ // Sniff for the signature.
+ if (!hasValidBitcodeHeader(Stream))
+ return error("Invalid bitcode signature");
+
+ // We expect a number of well-defined blocks, though we don't necessarily
+ // need to understand them all.
+ while (1) {
if (Stream.AtEndOfStream()) {
- if (TheModule)
- return std::error_code();
// We didn't really read a proper Module.
- return Error("Malformed IR file");
+ return error("Malformed IR file");
}
BitstreamEntry Entry =
Stream.advance(BitstreamCursor::AF_DontAutoprocessAbbrevs);
- switch (Entry.Kind) {
- case BitstreamEntry::Error:
- return Error("Malformed block");
- case BitstreamEntry::EndBlock:
- return std::error_code();
+ if (Entry.Kind != BitstreamEntry::SubBlock)
+ return error("Malformed block");
- case BitstreamEntry::SubBlock:
- switch (Entry.ID) {
- case bitc::BLOCKINFO_BLOCK_ID:
- if (Stream.ReadBlockInfoBlock())
- return Error("Malformed block");
- break;
- case bitc::MODULE_BLOCK_ID:
- // Reject multiple MODULE_BLOCK's in a single bitstream.
- if (TheModule)
- return Error("Invalid multiple blocks");
- TheModule = M;
- if (std::error_code EC = ParseModule(false, ShouldLazyLoadMetadata))
- return EC;
- if (LazyStreamer)
- return std::error_code();
- break;
- default:
- if (Stream.SkipBlock())
- return Error("Invalid record");
- break;
- }
+ if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) {
+ parseBitcodeVersion();
continue;
- case BitstreamEntry::Record:
- // There should be no records in the top-level of blocks.
-
- // The ranlib in Xcode 4 will align archive members by appending newlines
- // to the end of them. If this file size is a multiple of 4 but not 8, we
- // have to read and ignore these final 4 bytes :-(
- if (Stream.getAbbrevIDWidth() == 2 && Entry.ID == 2 &&
- Stream.Read(6) == 2 && Stream.Read(24) == 0xa0a0a &&
- Stream.AtEndOfStream())
- return std::error_code();
-
- return Error("Invalid record");
}
+
+ if (Entry.ID == bitc::MODULE_BLOCK_ID)
+ return parseModule(0, ShouldLazyLoadMetadata);
+
+ if (Stream.SkipBlock())
+ return error("Invalid record");
}
}
ErrorOr<std::string> BitcodeReader::parseModuleTriple() {
if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<uint64_t, 64> Record;
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
return Triple;
case BitstreamEntry::Record:
default: break; // Default behavior, ignore unknown content.
case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N]
std::string S;
- if (ConvertToString(Record, 0, S))
- return Error("Invalid record");
+ if (convertToString(Record, 0, S))
+ return error("Invalid record");
Triple = S;
break;
}
}
ErrorOr<std::string> BitcodeReader::parseTriple() {
- if (std::error_code EC = InitStream())
+ if (std::error_code EC = initStream(nullptr))
return EC;
// Sniff for the signature.
- if (Stream.Read(8) != 'B' ||
- Stream.Read(8) != 'C' ||
- Stream.Read(4) != 0x0 ||
- Stream.Read(4) != 0xC ||
- Stream.Read(4) != 0xE ||
- Stream.Read(4) != 0xD)
- return Error("Invalid bitcode signature");
+ if (!hasValidBitcodeHeader(Stream))
+ return error("Invalid bitcode signature");
// We expect a number of well-defined blocks, though we don't necessarily
// need to understand them all.
switch (Entry.Kind) {
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
return std::error_code();
// Ignore other sub-blocks.
if (Stream.SkipBlock())
- return Error("Malformed block");
+ return error("Malformed block");
continue;
case BitstreamEntry::Record:
}
}
-/// ParseMetadataAttachment - Parse metadata attachments.
-std::error_code BitcodeReader::ParseMetadataAttachment(Function &F) {
+ErrorOr<std::string> BitcodeReader::parseIdentificationBlock() {
+ if (std::error_code EC = initStream(nullptr))
+ return EC;
+
+ // Sniff for the signature.
+ if (!hasValidBitcodeHeader(Stream))
+ return error("Invalid bitcode signature");
+
+ // We expect a number of well-defined blocks, though we don't necessarily
+ // need to understand them all.
+ while (1) {
+ BitstreamEntry Entry = Stream.advance();
+ switch (Entry.Kind) {
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+
+ case BitstreamEntry::SubBlock:
+ if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) {
+ if (std::error_code EC = parseBitcodeVersion())
+ return EC;
+ return ProducerIdentification;
+ }
+ // Ignore other sub-blocks.
+ if (Stream.SkipBlock())
+ return error("Malformed block");
+ continue;
+ case BitstreamEntry::Record:
+ Stream.skipRecord(Entry.ID);
+ continue;
+ }
+ }
+}
+
+/// Parse metadata attachments.
+std::error_code BitcodeReader::parseMetadataAttachment(Function &F) {
if (Stream.EnterSubBlock(bitc::METADATA_ATTACHMENT_ID))
- return Error("Invalid record");
+ return error("Invalid record");
SmallVector<uint64_t, 64> Record;
while (1) {
switch (Entry.Kind) {
case BitstreamEntry::SubBlock: // Handled for us already.
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
return std::error_code();
case BitstreamEntry::Record:
case bitc::METADATA_ATTACHMENT: {
unsigned RecordLength = Record.size();
if (Record.empty())
- return Error("Invalid record");
+ return error("Invalid record");
if (RecordLength % 2 == 0) {
// A function attachment.
for (unsigned I = 0; I != RecordLength; I += 2) {
auto K = MDKindMap.find(Record[I]);
if (K == MDKindMap.end())
- return Error("Invalid ID");
- Metadata *MD = MDValueList.getValueFwdRef(Record[I + 1]);
+ return error("Invalid ID");
+ Metadata *MD = MetadataList.getValueFwdRef(Record[I + 1]);
F.setMetadata(K->second, cast<MDNode>(MD));
}
continue;
DenseMap<unsigned, unsigned>::iterator I =
MDKindMap.find(Kind);
if (I == MDKindMap.end())
- return Error("Invalid ID");
- Metadata *Node = MDValueList.getValueFwdRef(Record[i + 1]);
+ return error("Invalid ID");
+ Metadata *Node = MetadataList.getValueFwdRef(Record[i + 1]);
if (isa<LocalAsMetadata>(Node))
// Drop the attachment. This used to be legal, but there's no
// upgrade path.
}
}
-static std::error_code TypeCheckLoadStoreInst(DiagnosticHandlerFunction DH,
- Type *ValType, Type *PtrType) {
+static std::error_code typeCheckLoadStoreInst(Type *ValType, Type *PtrType) {
+ LLVMContext &Context = PtrType->getContext();
if (!isa<PointerType>(PtrType))
- return Error(DH, "Load/Store operand is not a pointer type");
+ return error(Context, "Load/Store operand is not a pointer type");
Type *ElemType = cast<PointerType>(PtrType)->getElementType();
if (ValType && ValType != ElemType)
- return Error(DH, "Explicit load/store type does not match pointee type of "
- "pointer operand");
+ return error(Context, "Explicit load/store type does not match pointee "
+ "type of pointer operand");
if (!PointerType::isLoadableOrStorableType(ElemType))
- return Error(DH, "Cannot load/store from pointer");
+ return error(Context, "Cannot load/store from pointer");
return std::error_code();
}
-/// ParseFunctionBody - Lazily parse the specified function body block.
-std::error_code BitcodeReader::ParseFunctionBody(Function *F) {
+/// Lazily parse the specified function body block.
+std::error_code BitcodeReader::parseFunctionBody(Function *F) {
if (Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID))
- return Error("Invalid record");
+ return error("Invalid record");
InstructionList.clear();
unsigned ModuleValueListSize = ValueList.size();
- unsigned ModuleMDValueListSize = MDValueList.size();
+ unsigned ModuleMetadataListSize = MetadataList.size();
// Add all the function arguments to the value table.
- for(Function::arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I)
- ValueList.push_back(I);
+ for (Argument &I : F->args())
+ ValueList.push_back(&I);
unsigned NextValueNo = ValueList.size();
BasicBlock *CurBB = nullptr;
return nullptr;
};
+ std::vector<OperandBundleDef> OperandBundles;
+
// Read all the records.
SmallVector<uint64_t, 64> Record;
while (1) {
switch (Entry.Kind) {
case BitstreamEntry::Error:
- return Error("Malformed block");
+ return error("Malformed block");
case BitstreamEntry::EndBlock:
goto OutOfRecordLoop;
switch (Entry.ID) {
default: // Skip unknown content.
if (Stream.SkipBlock())
- return Error("Invalid record");
+ return error("Invalid record");
break;
case bitc::CONSTANTS_BLOCK_ID:
- if (std::error_code EC = ParseConstants())
+ if (std::error_code EC = parseConstants())
return EC;
NextValueNo = ValueList.size();
break;
case bitc::VALUE_SYMTAB_BLOCK_ID:
- if (std::error_code EC = ParseValueSymbolTable())
+ if (std::error_code EC = parseValueSymbolTable())
return EC;
break;
case bitc::METADATA_ATTACHMENT_ID:
- if (std::error_code EC = ParseMetadataAttachment(*F))
+ if (std::error_code EC = parseMetadataAttachment(*F))
return EC;
break;
case bitc::METADATA_BLOCK_ID:
- if (std::error_code EC = ParseMetadata())
+ if (std::error_code EC = parseMetadata())
return EC;
break;
case bitc::USELIST_BLOCK_ID:
- if (std::error_code EC = ParseUseLists())
+ if (std::error_code EC = parseUseLists())
return EC;
break;
}
unsigned BitCode = Stream.readRecord(Entry.ID, Record);
switch (BitCode) {
default: // Default behavior: reject
- return Error("Invalid value");
+ return error("Invalid value");
case bitc::FUNC_CODE_DECLAREBLOCKS: { // DECLAREBLOCKS: [nblocks]
if (Record.size() < 1 || Record[0] == 0)
- return Error("Invalid record");
+ return error("Invalid record");
// Create all the basic blocks for the function.
FunctionBBs.resize(Record[0]);
auto &BBRefs = BBFRI->second;
// Check for invalid basic block references.
if (BBRefs.size() > FunctionBBs.size())
- return Error("Invalid ID");
+ return error("Invalid ID");
assert(!BBRefs.empty() && "Unexpected empty array");
assert(!BBRefs.front() && "Invalid reference to entry block");
for (unsigned I = 0, E = FunctionBBs.size(), RE = BBRefs.size(); I != E;
I = getLastInstruction();
if (!I)
- return Error("Invalid record");
+ return error("Invalid record");
I->setDebugLoc(LastLoc);
I = nullptr;
continue;
case bitc::FUNC_CODE_DEBUG_LOC: { // DEBUG_LOC: [line, col, scope, ia]
I = getLastInstruction();
if (!I || Record.size() < 4)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned Line = Record[0], Col = Record[1];
unsigned ScopeID = Record[2], IAID = Record[3];
MDNode *Scope = nullptr, *IA = nullptr;
- if (ScopeID) Scope = cast<MDNode>(MDValueList.getValueFwdRef(ScopeID-1));
- if (IAID) IA = cast<MDNode>(MDValueList.getValueFwdRef(IAID-1));
+ if (ScopeID)
+ Scope = cast<MDNode>(MetadataList.getValueFwdRef(ScopeID - 1));
+ if (IAID)
+ IA = cast<MDNode>(MetadataList.getValueFwdRef(IAID - 1));
LastLoc = DebugLoc::get(Line, Col, Scope, IA);
I->setDebugLoc(LastLoc);
I = nullptr;
if (getValueTypePair(Record, OpNum, NextValueNo, LHS) ||
popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) ||
OpNum+1 > Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
- int Opc = GetDecodedBinaryOpcode(Record[OpNum++], LHS->getType());
+ int Opc = getDecodedBinaryOpcode(Record[OpNum++], LHS->getType());
if (Opc == -1)
- return Error("Invalid record");
+ return error("Invalid record");
I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
InstructionList.push_back(I);
if (OpNum < Record.size()) {
if (Record[OpNum] & (1 << bitc::PEO_EXACT))
cast<BinaryOperator>(I)->setIsExact(true);
} else if (isa<FPMathOperator>(I)) {
- FastMathFlags FMF;
- if (0 != (Record[OpNum] & FastMathFlags::UnsafeAlgebra))
- FMF.setUnsafeAlgebra();
- if (0 != (Record[OpNum] & FastMathFlags::NoNaNs))
- FMF.setNoNaNs();
- if (0 != (Record[OpNum] & FastMathFlags::NoInfs))
- FMF.setNoInfs();
- if (0 != (Record[OpNum] & FastMathFlags::NoSignedZeros))
- FMF.setNoSignedZeros();
- if (0 != (Record[OpNum] & FastMathFlags::AllowReciprocal))
- FMF.setAllowReciprocal();
+ FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]);
if (FMF.any())
I->setFastMathFlags(FMF);
}
Value *Op;
if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
OpNum+2 != Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
Type *ResTy = getTypeByID(Record[OpNum]);
- int Opc = GetDecodedCastOpcode(Record[OpNum+1]);
+ int Opc = getDecodedCastOpcode(Record[OpNum + 1]);
if (Opc == -1 || !ResTy)
- return Error("Invalid record");
+ return error("Invalid record");
Instruction *Temp = nullptr;
if ((I = UpgradeBitCastInst(Opc, Op, ResTy, Temp))) {
if (Temp) {
CurBB->getInstList().push_back(Temp);
}
} else {
- I = CastInst::Create((Instruction::CastOps)Opc, Op, ResTy);
+ auto CastOp = (Instruction::CastOps)Opc;
+ if (!CastInst::castIsValid(CastOp, Op, ResTy))
+ return error("Invalid cast");
+ I = CastInst::Create(CastOp, Op, ResTy);
}
InstructionList.push_back(I);
break;
Value *BasePtr;
if (getValueTypePair(Record, OpNum, NextValueNo, BasePtr))
- return Error("Invalid record");
+ return error("Invalid record");
if (!Ty)
Ty = cast<SequentialType>(BasePtr->getType()->getScalarType())
else if (Ty !=
cast<SequentialType>(BasePtr->getType()->getScalarType())
->getElementType())
- return Error(
+ return error(
"Explicit gep type does not match pointee type of pointer operand");
SmallVector<Value*, 16> GEPIdx;
while (OpNum != Record.size()) {
Value *Op;
if (getValueTypePair(Record, OpNum, NextValueNo, Op))
- return Error("Invalid record");
+ return error("Invalid record");
GEPIdx.push_back(Op);
}
unsigned OpNum = 0;
Value *Agg;
if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
- return Error("Invalid record");
+ return error("Invalid record");
unsigned RecSize = Record.size();
if (OpNum == RecSize)
- return Error("EXTRACTVAL: Invalid instruction with 0 indices");
+ return error("EXTRACTVAL: Invalid instruction with 0 indices");
SmallVector<unsigned, 4> EXTRACTVALIdx;
Type *CurTy = Agg->getType();
uint64_t Index = Record[OpNum];
if (!IsStruct && !IsArray)
- return Error("EXTRACTVAL: Invalid type");
+ return error("EXTRACTVAL: Invalid type");
if ((unsigned)Index != Index)
- return Error("Invalid value");
+ return error("Invalid value");
if (IsStruct && Index >= CurTy->subtypes().size())
- return Error("EXTRACTVAL: Invalid struct index");
+ return error("EXTRACTVAL: Invalid struct index");
if (IsArray && Index >= CurTy->getArrayNumElements())
- return Error("EXTRACTVAL: Invalid array index");
+ return error("EXTRACTVAL: Invalid array index");
EXTRACTVALIdx.push_back((unsigned)Index);
if (IsStruct)
unsigned OpNum = 0;
Value *Agg;
if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
- return Error("Invalid record");
+ return error("Invalid record");
Value *Val;
if (getValueTypePair(Record, OpNum, NextValueNo, Val))
- return Error("Invalid record");
+ return error("Invalid record");
unsigned RecSize = Record.size();
if (OpNum == RecSize)
- return Error("INSERTVAL: Invalid instruction with 0 indices");
+ return error("INSERTVAL: Invalid instruction with 0 indices");
SmallVector<unsigned, 4> INSERTVALIdx;
Type *CurTy = Agg->getType();
uint64_t Index = Record[OpNum];
if (!IsStruct && !IsArray)
- return Error("INSERTVAL: Invalid type");
+ return error("INSERTVAL: Invalid type");
if ((unsigned)Index != Index)
- return Error("Invalid value");
+ return error("Invalid value");
if (IsStruct && Index >= CurTy->subtypes().size())
- return Error("INSERTVAL: Invalid struct index");
+ return error("INSERTVAL: Invalid struct index");
if (IsArray && Index >= CurTy->getArrayNumElements())
- return Error("INSERTVAL: Invalid array index");
+ return error("INSERTVAL: Invalid array index");
INSERTVALIdx.push_back((unsigned)Index);
if (IsStruct)
}
if (CurTy != Val->getType())
- return Error("Inserted value type doesn't match aggregate type");
+ return error("Inserted value type doesn't match aggregate type");
I = InsertValueInst::Create(Agg, Val, INSERTVALIdx);
InstructionList.push_back(I);
if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) ||
popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) ||
popValue(Record, OpNum, NextValueNo, Type::getInt1Ty(Context), Cond))
- return Error("Invalid record");
+ return error("Invalid record");
I = SelectInst::Create(Cond, TrueVal, FalseVal);
InstructionList.push_back(I);
if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) ||
popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) ||
getValueTypePair(Record, OpNum, NextValueNo, Cond))
- return Error("Invalid record");
+ return error("Invalid record");
// select condition can be either i1 or [N x i1]
if (VectorType* vector_type =
dyn_cast<VectorType>(Cond->getType())) {
// expect <n x i1>
if (vector_type->getElementType() != Type::getInt1Ty(Context))
- return Error("Invalid type for value");
+ return error("Invalid type for value");
} else {
// expect i1
if (Cond->getType() != Type::getInt1Ty(Context))
- return Error("Invalid type for value");
+ return error("Invalid type for value");
}
I = SelectInst::Create(Cond, TrueVal, FalseVal);
Value *Vec, *Idx;
if (getValueTypePair(Record, OpNum, NextValueNo, Vec) ||
getValueTypePair(Record, OpNum, NextValueNo, Idx))
- return Error("Invalid record");
+ return error("Invalid record");
if (!Vec->getType()->isVectorTy())
- return Error("Invalid type for value");
+ return error("Invalid type for value");
I = ExtractElementInst::Create(Vec, Idx);
InstructionList.push_back(I);
break;
unsigned OpNum = 0;
Value *Vec, *Elt, *Idx;
if (getValueTypePair(Record, OpNum, NextValueNo, Vec))
- return Error("Invalid record");
+ return error("Invalid record");
if (!Vec->getType()->isVectorTy())
- return Error("Invalid type for value");
+ return error("Invalid type for value");
if (popValue(Record, OpNum, NextValueNo,
cast<VectorType>(Vec->getType())->getElementType(), Elt) ||
getValueTypePair(Record, OpNum, NextValueNo, Idx))
- return Error("Invalid record");
+ return error("Invalid record");
I = InsertElementInst::Create(Vec, Elt, Idx);
InstructionList.push_back(I);
break;
Value *Vec1, *Vec2, *Mask;
if (getValueTypePair(Record, OpNum, NextValueNo, Vec1) ||
popValue(Record, OpNum, NextValueNo, Vec1->getType(), Vec2))
- return Error("Invalid record");
+ return error("Invalid record");
if (getValueTypePair(Record, OpNum, NextValueNo, Mask))
- return Error("Invalid record");
+ return error("Invalid record");
if (!Vec1->getType()->isVectorTy() || !Vec2->getType()->isVectorTy())
- return Error("Invalid type for value");
+ return error("Invalid type for value");
I = new ShuffleVectorInst(Vec1, Vec2, Mask);
InstructionList.push_back(I);
break;
unsigned OpNum = 0;
Value *LHS, *RHS;
if (getValueTypePair(Record, OpNum, NextValueNo, LHS) ||
- popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) ||
- OpNum+1 != Record.size())
- return Error("Invalid record");
+ popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS))
+ return error("Invalid record");
+
+ unsigned PredVal = Record[OpNum];
+ bool IsFP = LHS->getType()->isFPOrFPVectorTy();
+ FastMathFlags FMF;
+ if (IsFP && Record.size() > OpNum+1)
+ FMF = getDecodedFastMathFlags(Record[++OpNum]);
+
+ if (OpNum+1 != Record.size())
+ return error("Invalid record");
if (LHS->getType()->isFPOrFPVectorTy())
- I = new FCmpInst((FCmpInst::Predicate)Record[OpNum], LHS, RHS);
+ I = new FCmpInst((FCmpInst::Predicate)PredVal, LHS, RHS);
else
- I = new ICmpInst((ICmpInst::Predicate)Record[OpNum], LHS, RHS);
+ I = new ICmpInst((ICmpInst::Predicate)PredVal, LHS, RHS);
+
+ if (FMF.any())
+ I->setFastMathFlags(FMF);
InstructionList.push_back(I);
break;
}
unsigned OpNum = 0;
Value *Op = nullptr;
if (getValueTypePair(Record, OpNum, NextValueNo, Op))
- return Error("Invalid record");
+ return error("Invalid record");
if (OpNum != Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
I = ReturnInst::Create(Context, Op);
InstructionList.push_back(I);
}
case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#]
if (Record.size() != 1 && Record.size() != 3)
- return Error("Invalid record");
+ return error("Invalid record");
BasicBlock *TrueDest = getBasicBlock(Record[0]);
if (!TrueDest)
- return Error("Invalid record");
+ return error("Invalid record");
if (Record.size() == 1) {
I = BranchInst::Create(TrueDest);
Value *Cond = getValue(Record, 2, NextValueNo,
Type::getInt1Ty(Context));
if (!FalseDest || !Cond)
- return Error("Invalid record");
+ return error("Invalid record");
I = BranchInst::Create(TrueDest, FalseDest, Cond);
InstructionList.push_back(I);
}
break;
}
+ case bitc::FUNC_CODE_INST_CLEANUPRET: { // CLEANUPRET: [val] or [val,bb#]
+ if (Record.size() != 1 && Record.size() != 2)
+ return error("Invalid record");
+ unsigned Idx = 0;
+ Value *CleanupPad =
+ getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context));
+ if (!CleanupPad)
+ return error("Invalid record");
+ BasicBlock *UnwindDest = nullptr;
+ if (Record.size() == 2) {
+ UnwindDest = getBasicBlock(Record[Idx++]);
+ if (!UnwindDest)
+ return error("Invalid record");
+ }
+
+ I = CleanupReturnInst::Create(CleanupPad, UnwindDest);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [val,bb#]
+ if (Record.size() != 2)
+ return error("Invalid record");
+ unsigned Idx = 0;
+ Value *CatchPad =
+ getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context));
+ if (!CatchPad)
+ return error("Invalid record");
+ BasicBlock *BB = getBasicBlock(Record[Idx++]);
+ if (!BB)
+ return error("Invalid record");
+
+ I = CatchReturnInst::Create(CatchPad, BB);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_CATCHSWITCH: { // CATCHSWITCH: [tok,num,(bb)*,bb?]
+ // We must have, at minimum, the outer scope and the number of arguments.
+ if (Record.size() < 2)
+ return error("Invalid record");
+
+ unsigned Idx = 0;
+
+ Value *ParentPad =
+ getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context));
+
+ unsigned NumHandlers = Record[Idx++];
+
+ SmallVector<BasicBlock *, 2> Handlers;
+ for (unsigned Op = 0; Op != NumHandlers; ++Op) {
+ BasicBlock *BB = getBasicBlock(Record[Idx++]);
+ if (!BB)
+ return error("Invalid record");
+ Handlers.push_back(BB);
+ }
+
+ BasicBlock *UnwindDest = nullptr;
+ if (Idx + 1 == Record.size()) {
+ UnwindDest = getBasicBlock(Record[Idx++]);
+ if (!UnwindDest)
+ return error("Invalid record");
+ }
+
+ if (Record.size() != Idx)
+ return error("Invalid record");
+
+ auto *CatchSwitch =
+ CatchSwitchInst::Create(ParentPad, UnwindDest, NumHandlers);
+ for (BasicBlock *Handler : Handlers)
+ CatchSwitch->addHandler(Handler);
+ I = CatchSwitch;
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_CATCHPAD:
+ case bitc::FUNC_CODE_INST_CLEANUPPAD: { // [tok,num,(ty,val)*]
+ // We must have, at minimum, the outer scope and the number of arguments.
+ if (Record.size() < 2)
+ return error("Invalid record");
+
+ unsigned Idx = 0;
+
+ Value *ParentPad =
+ getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context));
+
+ unsigned NumArgOperands = Record[Idx++];
+
+ SmallVector<Value *, 2> Args;
+ for (unsigned Op = 0; Op != NumArgOperands; ++Op) {
+ Value *Val;
+ if (getValueTypePair(Record, Idx, NextValueNo, Val))
+ return error("Invalid record");
+ Args.push_back(Val);
+ }
+
+ if (Record.size() != Idx)
+ return error("Invalid record");
+
+ if (BitCode == bitc::FUNC_CODE_INST_CLEANUPPAD)
+ I = CleanupPadInst::Create(ParentPad, Args);
+ else
+ I = CatchPadInst::Create(ParentPad, Args);
+ InstructionList.push_back(I);
+ break;
+ }
case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...]
// Check magic
if ((Record[0] >> 16) == SWITCH_INST_MAGIC) {
Value *Cond = getValue(Record, 2, NextValueNo, OpTy);
BasicBlock *Default = getBasicBlock(Record[3]);
if (!OpTy || !Cond || !Default)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned NumCases = Record[4];
unsigned ActiveWords = 1;
if (ValueBitWidth > 64)
ActiveWords = Record[CurIdx++];
- Low = ReadWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords),
+ Low = readWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords),
ValueBitWidth);
CurIdx += ActiveWords;
ActiveWords = 1;
if (ValueBitWidth > 64)
ActiveWords = Record[CurIdx++];
- APInt High =
- ReadWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords),
- ValueBitWidth);
+ APInt High = readWideAPInt(
+ makeArrayRef(&Record[CurIdx], ActiveWords), ValueBitWidth);
CurIdx += ActiveWords;
// FIXME: It is not clear whether values in the range should be
// Old SwitchInst format without case ranges.
if (Record.size() < 3 || (Record.size() & 1) == 0)
- return Error("Invalid record");
+ return error("Invalid record");
Type *OpTy = getTypeByID(Record[0]);
Value *Cond = getValue(Record, 1, NextValueNo, OpTy);
BasicBlock *Default = getBasicBlock(Record[2]);
if (!OpTy || !Cond || !Default)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned NumCases = (Record.size()-3)/2;
SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases);
InstructionList.push_back(SI);
BasicBlock *DestBB = getBasicBlock(Record[1+3+i*2]);
if (!CaseVal || !DestBB) {
delete SI;
- return Error("Invalid record");
+ return error("Invalid record");
}
SI->addCase(CaseVal, DestBB);
}
}
case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...]
if (Record.size() < 2)
- return Error("Invalid record");
+ return error("Invalid record");
Type *OpTy = getTypeByID(Record[0]);
Value *Address = getValue(Record, 1, NextValueNo, OpTy);
if (!OpTy || !Address)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned NumDests = Record.size()-2;
IndirectBrInst *IBI = IndirectBrInst::Create(Address, NumDests);
InstructionList.push_back(IBI);
IBI->addDestination(DestBB);
} else {
delete IBI;
- return Error("Invalid record");
+ return error("Invalid record");
}
}
I = IBI;
case bitc::FUNC_CODE_INST_INVOKE: {
// INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...]
if (Record.size() < 4)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned OpNum = 0;
AttributeSet PAL = getAttributes(Record[OpNum++]);
unsigned CCInfo = Record[OpNum++];
FunctionType *FTy = nullptr;
if (CCInfo >> 13 & 1 &&
!(FTy = dyn_cast<FunctionType>(getTypeByID(Record[OpNum++]))))
- return Error("Explicit invoke type is not a function type");
+ return error("Explicit invoke type is not a function type");
Value *Callee;
if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
- return Error("Invalid record");
+ return error("Invalid record");
PointerType *CalleeTy = dyn_cast<PointerType>(Callee->getType());
if (!CalleeTy)
- return Error("Callee is not a pointer");
+ return error("Callee is not a pointer");
if (!FTy) {
FTy = dyn_cast<FunctionType>(CalleeTy->getElementType());
if (!FTy)
- return Error("Callee is not of pointer to function type");
+ return error("Callee is not of pointer to function type");
} else if (CalleeTy->getElementType() != FTy)
- return Error("Explicit invoke type does not match pointee type of "
+ return error("Explicit invoke type does not match pointee type of "
"callee operand");
if (Record.size() < FTy->getNumParams() + OpNum)
- return Error("Insufficient operands to call");
+ return error("Insufficient operands to call");
SmallVector<Value*, 16> Ops;
for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
Ops.push_back(getValue(Record, OpNum, NextValueNo,
FTy->getParamType(i)));
if (!Ops.back())
- return Error("Invalid record");
+ return error("Invalid record");
}
if (!FTy->isVarArg()) {
if (Record.size() != OpNum)
- return Error("Invalid record");
+ return error("Invalid record");
} else {
// Read type/value pairs for varargs params.
while (OpNum != Record.size()) {
Value *Op;
if (getValueTypePair(Record, OpNum, NextValueNo, Op))
- return Error("Invalid record");
+ return error("Invalid record");
Ops.push_back(Op);
}
}
- I = InvokeInst::Create(Callee, NormalBB, UnwindBB, Ops);
+ I = InvokeInst::Create(Callee, NormalBB, UnwindBB, Ops, OperandBundles);
+ OperandBundles.clear();
InstructionList.push_back(I);
- cast<InvokeInst>(I)
- ->setCallingConv(static_cast<CallingConv::ID>(~(1U << 13) & CCInfo));
+ cast<InvokeInst>(I)->setCallingConv(
+ static_cast<CallingConv::ID>(CallingConv::MaxID & CCInfo));
cast<InvokeInst>(I)->setAttributes(PAL);
break;
}
unsigned Idx = 0;
Value *Val = nullptr;
if (getValueTypePair(Record, Idx, NextValueNo, Val))
- return Error("Invalid record");
+ return error("Invalid record");
I = ResumeInst::Create(Val);
InstructionList.push_back(I);
break;
break;
case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...]
if (Record.size() < 1 || ((Record.size()-1)&1))
- return Error("Invalid record");
+ return error("Invalid record");
Type *Ty = getTypeByID(Record[0]);
if (!Ty)
- return Error("Invalid record");
+ return error("Invalid record");
PHINode *PN = PHINode::Create(Ty, (Record.size()-1)/2);
InstructionList.push_back(PN);
V = getValue(Record, 1+i, NextValueNo, Ty);
BasicBlock *BB = getBasicBlock(Record[2+i]);
if (!V || !BB)
- return Error("Invalid record");
+ return error("Invalid record");
PN->addIncoming(V, BB);
}
I = PN;
break;
}
- case bitc::FUNC_CODE_INST_LANDINGPAD: {
+ case bitc::FUNC_CODE_INST_LANDINGPAD:
+ case bitc::FUNC_CODE_INST_LANDINGPAD_OLD: {
// LANDINGPAD: [ty, val, val, num, (id0,val0 ...)?]
unsigned Idx = 0;
- if (Record.size() < 4)
- return Error("Invalid record");
+ if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD) {
+ if (Record.size() < 3)
+ return error("Invalid record");
+ } else {
+ assert(BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD);
+ if (Record.size() < 4)
+ return error("Invalid record");
+ }
Type *Ty = getTypeByID(Record[Idx++]);
if (!Ty)
- return Error("Invalid record");
- Value *PersFn = nullptr;
- if (getValueTypePair(Record, Idx, NextValueNo, PersFn))
- return Error("Invalid record");
+ return error("Invalid record");
+ if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD) {
+ Value *PersFn = nullptr;
+ if (getValueTypePair(Record, Idx, NextValueNo, PersFn))
+ return error("Invalid record");
+
+ if (!F->hasPersonalityFn())
+ F->setPersonalityFn(cast<Constant>(PersFn));
+ else if (F->getPersonalityFn() != cast<Constant>(PersFn))
+ return error("Personality function mismatch");
+ }
bool IsCleanup = !!Record[Idx++];
unsigned NumClauses = Record[Idx++];
- LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, NumClauses);
+ LandingPadInst *LP = LandingPadInst::Create(Ty, NumClauses);
LP->setCleanup(IsCleanup);
for (unsigned J = 0; J != NumClauses; ++J) {
LandingPadInst::ClauseType CT =
if (getValueTypePair(Record, Idx, NextValueNo, Val)) {
delete LP;
- return Error("Invalid record");
+ return error("Invalid record");
}
assert((CT != LandingPadInst::Catch ||
case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align]
if (Record.size() != 4)
- return Error("Invalid record");
+ return error("Invalid record");
uint64_t AlignRecord = Record[3];
const uint64_t InAllocaMask = uint64_t(1) << 5;
const uint64_t ExplicitTypeMask = uint64_t(1) << 6;
+ // Reserve bit 7 for SwiftError flag.
+ // const uint64_t SwiftErrorMask = uint64_t(1) << 7;
const uint64_t FlagMask = InAllocaMask | ExplicitTypeMask;
bool InAlloca = AlignRecord & InAllocaMask;
Type *Ty = getTypeByID(Record[0]);
if ((AlignRecord & ExplicitTypeMask) == 0) {
auto *PTy = dyn_cast_or_null<PointerType>(Ty);
if (!PTy)
- return Error("Old-style alloca with a non-pointer type");
+ return error("Old-style alloca with a non-pointer type");
Ty = PTy->getElementType();
}
Type *OpTy = getTypeByID(Record[1]);
return EC;
}
if (!Ty || !Size)
- return Error("Invalid record");
+ return error("Invalid record");
AllocaInst *AI = new AllocaInst(Ty, Size, Align);
AI->setUsedWithInAlloca(InAlloca);
I = AI;
Value *Op;
if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
(OpNum + 2 != Record.size() && OpNum + 3 != Record.size()))
- return Error("Invalid record");
+ return error("Invalid record");
Type *Ty = nullptr;
if (OpNum + 3 == Record.size())
Ty = getTypeByID(Record[OpNum++]);
- if (std::error_code EC =
- TypeCheckLoadStoreInst(DiagnosticHandler, Ty, Op->getType()))
+ if (std::error_code EC = typeCheckLoadStoreInst(Ty, Op->getType()))
return EC;
if (!Ty)
Ty = cast<PointerType>(Op->getType())->getElementType();
Value *Op;
if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
(OpNum + 4 != Record.size() && OpNum + 5 != Record.size()))
- return Error("Invalid record");
+ return error("Invalid record");
Type *Ty = nullptr;
if (OpNum + 5 == Record.size())
Ty = getTypeByID(Record[OpNum++]);
- if (std::error_code EC =
- TypeCheckLoadStoreInst(DiagnosticHandler, Ty, Op->getType()))
+ if (std::error_code EC = typeCheckLoadStoreInst(Ty, Op->getType()))
return EC;
if (!Ty)
Ty = cast<PointerType>(Op->getType())->getElementType();
- AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
+ AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]);
if (Ordering == NotAtomic || Ordering == Release ||
Ordering == AcquireRelease)
- return Error("Invalid record");
+ return error("Invalid record");
if (Ordering != NotAtomic && Record[OpNum] == 0)
- return Error("Invalid record");
- SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
+ return error("Invalid record");
+ SynchronizationScope SynchScope = getDecodedSynchScope(Record[OpNum + 3]);
unsigned Align;
if (std::error_code EC = parseAlignmentValue(Record[OpNum], Align))
cast<PointerType>(Ptr->getType())->getElementType(),
Val)) ||
OpNum + 2 != Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
- if (std::error_code EC = TypeCheckLoadStoreInst(
- DiagnosticHandler, Val->getType(), Ptr->getType()))
+ if (std::error_code EC =
+ typeCheckLoadStoreInst(Val->getType(), Ptr->getType()))
return EC;
unsigned Align;
if (std::error_code EC = parseAlignmentValue(Record[OpNum], Align))
cast<PointerType>(Ptr->getType())->getElementType(),
Val)) ||
OpNum + 4 != Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
- if (std::error_code EC = TypeCheckLoadStoreInst(
- DiagnosticHandler, Val->getType(), Ptr->getType()))
+ if (std::error_code EC =
+ typeCheckLoadStoreInst(Val->getType(), Ptr->getType()))
return EC;
- AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
+ AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]);
if (Ordering == NotAtomic || Ordering == Acquire ||
Ordering == AcquireRelease)
- return Error("Invalid record");
- SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
+ return error("Invalid record");
+ SynchronizationScope SynchScope = getDecodedSynchScope(Record[OpNum + 3]);
if (Ordering != NotAtomic && Record[OpNum] == 0)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned Align;
if (std::error_code EC = parseAlignmentValue(Record[OpNum], Align))
Cmp)) ||
popValue(Record, OpNum, NextValueNo, Cmp->getType(), New) ||
Record.size() < OpNum + 3 || Record.size() > OpNum + 5)
- return Error("Invalid record");
- AtomicOrdering SuccessOrdering = GetDecodedOrdering(Record[OpNum+1]);
+ return error("Invalid record");
+ AtomicOrdering SuccessOrdering = getDecodedOrdering(Record[OpNum + 1]);
if (SuccessOrdering == NotAtomic || SuccessOrdering == Unordered)
- return Error("Invalid record");
- SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+2]);
+ return error("Invalid record");
+ SynchronizationScope SynchScope = getDecodedSynchScope(Record[OpNum + 2]);
- if (std::error_code EC = TypeCheckLoadStoreInst(
- DiagnosticHandler, Cmp->getType(), Ptr->getType()))
+ if (std::error_code EC =
+ typeCheckLoadStoreInst(Cmp->getType(), Ptr->getType()))
return EC;
AtomicOrdering FailureOrdering;
if (Record.size() < 7)
FailureOrdering =
AtomicCmpXchgInst::getStrongestFailureOrdering(SuccessOrdering);
else
- FailureOrdering = GetDecodedOrdering(Record[OpNum+3]);
+ FailureOrdering = getDecodedOrdering(Record[OpNum + 3]);
I = new AtomicCmpXchgInst(Ptr, Cmp, New, SuccessOrdering, FailureOrdering,
SynchScope);
popValue(Record, OpNum, NextValueNo,
cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
OpNum+4 != Record.size())
- return Error("Invalid record");
- AtomicRMWInst::BinOp Operation = GetDecodedRMWOperation(Record[OpNum]);
+ return error("Invalid record");
+ AtomicRMWInst::BinOp Operation = getDecodedRMWOperation(Record[OpNum]);
if (Operation < AtomicRMWInst::FIRST_BINOP ||
Operation > AtomicRMWInst::LAST_BINOP)
- return Error("Invalid record");
- AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
+ return error("Invalid record");
+ AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]);
if (Ordering == NotAtomic || Ordering == Unordered)
- return Error("Invalid record");
- SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
+ return error("Invalid record");
+ SynchronizationScope SynchScope = getDecodedSynchScope(Record[OpNum + 3]);
I = new AtomicRMWInst(Operation, Ptr, Val, Ordering, SynchScope);
cast<AtomicRMWInst>(I)->setVolatile(Record[OpNum+1]);
InstructionList.push_back(I);
}
case bitc::FUNC_CODE_INST_FENCE: { // FENCE:[ordering, synchscope]
if (2 != Record.size())
- return Error("Invalid record");
- AtomicOrdering Ordering = GetDecodedOrdering(Record[0]);
+ return error("Invalid record");
+ AtomicOrdering Ordering = getDecodedOrdering(Record[0]);
if (Ordering == NotAtomic || Ordering == Unordered ||
Ordering == Monotonic)
- return Error("Invalid record");
- SynchronizationScope SynchScope = GetDecodedSynchScope(Record[1]);
+ return error("Invalid record");
+ SynchronizationScope SynchScope = getDecodedSynchScope(Record[1]);
I = new FenceInst(Context, Ordering, SynchScope);
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_CALL: {
- // CALL: [paramattrs, cc, fnty, fnid, arg0, arg1...]
+ // CALL: [paramattrs, cc, fmf, fnty, fnid, arg0, arg1...]
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
unsigned OpNum = 0;
AttributeSet PAL = getAttributes(Record[OpNum++]);
unsigned CCInfo = Record[OpNum++];
+ FastMathFlags FMF;
+ if ((CCInfo >> bitc::CALL_FMF) & 1) {
+ FMF = getDecodedFastMathFlags(Record[OpNum++]);
+ if (!FMF.any())
+ return error("Fast math flags indicator set for call with no FMF");
+ }
+
FunctionType *FTy = nullptr;
- if (CCInfo >> 15 & 1 &&
+ if (CCInfo >> bitc::CALL_EXPLICIT_TYPE & 1 &&
!(FTy = dyn_cast<FunctionType>(getTypeByID(Record[OpNum++]))))
- return Error("Explicit call type is not a function type");
+ return error("Explicit call type is not a function type");
Value *Callee;
if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
- return Error("Invalid record");
+ return error("Invalid record");
PointerType *OpTy = dyn_cast<PointerType>(Callee->getType());
if (!OpTy)
- return Error("Callee is not a pointer type");
+ return error("Callee is not a pointer type");
if (!FTy) {
FTy = dyn_cast<FunctionType>(OpTy->getElementType());
if (!FTy)
- return Error("Callee is not of pointer to function type");
+ return error("Callee is not of pointer to function type");
} else if (OpTy->getElementType() != FTy)
- return Error("Explicit call type does not match pointee type of "
+ return error("Explicit call type does not match pointee type of "
"callee operand");
if (Record.size() < FTy->getNumParams() + OpNum)
- return Error("Insufficient operands to call");
+ return error("Insufficient operands to call");
SmallVector<Value*, 16> Args;
// Read the fixed params.
Args.push_back(getValue(Record, OpNum, NextValueNo,
FTy->getParamType(i)));
if (!Args.back())
- return Error("Invalid record");
+ return error("Invalid record");
}
// Read type/value pairs for varargs params.
if (!FTy->isVarArg()) {
if (OpNum != Record.size())
- return Error("Invalid record");
+ return error("Invalid record");
} else {
while (OpNum != Record.size()) {
Value *Op;
if (getValueTypePair(Record, OpNum, NextValueNo, Op))
- return Error("Invalid record");
+ return error("Invalid record");
Args.push_back(Op);
}
}
- I = CallInst::Create(FTy, Callee, Args);
+ I = CallInst::Create(FTy, Callee, Args, OperandBundles);
+ OperandBundles.clear();
InstructionList.push_back(I);
cast<CallInst>(I)->setCallingConv(
- static_cast<CallingConv::ID>((~(1U << 14) & CCInfo) >> 1));
+ static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV));
CallInst::TailCallKind TCK = CallInst::TCK_None;
- if (CCInfo & 1)
+ if (CCInfo & 1 << bitc::CALL_TAIL)
TCK = CallInst::TCK_Tail;
- if (CCInfo & (1 << 14))
+ if (CCInfo & (1 << bitc::CALL_MUSTTAIL))
TCK = CallInst::TCK_MustTail;
+ if (CCInfo & (1 << bitc::CALL_NOTAIL))
+ TCK = CallInst::TCK_NoTail;
cast<CallInst>(I)->setTailCallKind(TCK);
cast<CallInst>(I)->setAttributes(PAL);
+ if (FMF.any()) {
+ if (!isa<FPMathOperator>(I))
+ return error("Fast-math-flags specified for call without "
+ "floating-point scalar or vector return type");
+ I->setFastMathFlags(FMF);
+ }
break;
}
case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty]
if (Record.size() < 3)
- return Error("Invalid record");
+ return error("Invalid record");
Type *OpTy = getTypeByID(Record[0]);
Value *Op = getValue(Record, 1, NextValueNo, OpTy);
Type *ResTy = getTypeByID(Record[2]);
if (!OpTy || !Op || !ResTy)
- return Error("Invalid record");
+ return error("Invalid record");
I = new VAArgInst(Op, ResTy);
InstructionList.push_back(I);
break;
}
+
+ case bitc::FUNC_CODE_OPERAND_BUNDLE: {
+ // A call or an invoke can be optionally prefixed with some variable
+ // number of operand bundle blocks. These blocks are read into
+ // OperandBundles and consumed at the next call or invoke instruction.
+
+ if (Record.size() < 1 || Record[0] >= BundleTags.size())
+ return error("Invalid record");
+
+ std::vector<Value *> Inputs;
+
+ unsigned OpNum = 1;
+ while (OpNum != Record.size()) {
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+ return error("Invalid record");
+ Inputs.push_back(Op);
+ }
+
+ OperandBundles.emplace_back(BundleTags[Record[0]], std::move(Inputs));
+ continue;
+ }
}
// Add instruction to end of current BB. If there is no current BB, reject
// this file.
if (!CurBB) {
delete I;
- return Error("Invalid instruction with no BB");
+ return error("Invalid instruction with no BB");
+ }
+ if (!OperandBundles.empty()) {
+ delete I;
+ return error("Operand bundles found with no consumer");
}
CurBB->getInstList().push_back(I);
// Non-void values get registered in the value table for future use.
if (I && !I->getType()->isVoidTy())
- ValueList.AssignValue(I, NextValueNo++);
+ ValueList.assignValue(I, NextValueNo++);
}
OutOfRecordLoop:
+ if (!OperandBundles.empty())
+ return error("Operand bundles found with no consumer");
+
// Check the function list for unresolved values.
if (Argument *A = dyn_cast<Argument>(ValueList.back())) {
if (!A->getParent()) {
delete A;
}
}
- return Error("Never resolved value found in function");
+ return error("Never resolved value found in function");
}
}
// Trim the value list down to the size it was before we parsed this function.
ValueList.shrinkTo(ModuleValueListSize);
- MDValueList.shrinkTo(ModuleMDValueListSize);
+ MetadataList.shrinkTo(ModuleMetadataListSize);
std::vector<BasicBlock*>().swap(FunctionBBs);
return std::error_code();
}
/// Find the function body in the bitcode stream
-std::error_code BitcodeReader::FindFunctionInStream(
+std::error_code BitcodeReader::findFunctionInStream(
Function *F,
DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator) {
while (DeferredFunctionInfoIterator->second == 0) {
- if (Stream.AtEndOfStream())
- return Error("Could not find function in stream");
- // ParseModule will parse the next body in the stream and set its
- // position in the DeferredFunctionInfo map.
- if (std::error_code EC = ParseModule(true))
+ // This is the fallback handling for the old format bitcode that
+ // didn't contain the function index in the VST, or when we have
+ // an anonymous function which would not have a VST entry.
+ // Assert that we have one of those two cases.
+ assert(VSTOffset == 0 || !F->hasName());
+ // Parse the next body in the stream and set its position in the
+ // DeferredFunctionInfo map.
+ if (std::error_code EC = rememberAndSkipFunctionBodies())
return EC;
}
return std::error_code();
void BitcodeReader::releaseBuffer() { Buffer.release(); }
std::error_code BitcodeReader::materialize(GlobalValue *GV) {
- if (std::error_code EC = materializeMetadata())
- return EC;
+ // In older bitcode we must materialize the metadata before parsing
+ // any functions, in order to set up the MetadataList properly.
+ if (!SeenModuleValuesRecord) {
+ if (std::error_code EC = materializeMetadata())
+ return EC;
+ }
Function *F = dyn_cast<Function>(GV);
// If it's not a function or is already material, ignore the request.
assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!");
// If its position is recorded as 0, its body is somewhere in the stream
// but we haven't seen it yet.
- if (DFII->second == 0 && LazyStreamer)
- if (std::error_code EC = FindFunctionInStream(F, DFII))
+ if (DFII->second == 0)
+ if (std::error_code EC = findFunctionInStream(F, DFII))
return EC;
// Move the bit stream to the saved position of the deferred function body.
Stream.JumpToBit(DFII->second);
- if (std::error_code EC = ParseFunctionBody(F))
+ if (std::error_code EC = parseFunctionBody(F))
return EC;
F->setIsMaterializable(false);
stripDebugInfo(*F);
// Upgrade any old intrinsic calls in the function.
- for (UpgradedIntrinsicMap::iterator I = UpgradedIntrinsics.begin(),
- E = UpgradedIntrinsics.end(); I != E; ++I) {
- if (I->first != I->second) {
- for (auto UI = I->first->user_begin(), UE = I->first->user_end();
- UI != UE;) {
- if (CallInst* CI = dyn_cast<CallInst>(*UI++))
- UpgradeIntrinsicCall(CI, I->second);
- }
+ for (auto &I : UpgradedIntrinsics) {
+ for (auto UI = I.first->materialized_user_begin(), UE = I.first->user_end();
+ UI != UE;) {
+ User *U = *UI;
+ ++UI;
+ if (CallInst *CI = dyn_cast<CallInst>(U))
+ UpgradeIntrinsicCall(CI, I.second);
}
}
+ // Finish fn->subprogram upgrade for materialized functions.
+ if (DISubprogram *SP = FunctionsWithSPs.lookup(F))
+ F->setSubprogram(SP);
+
// Bring in any functions that this function forward-referenced via
// blockaddresses.
return materializeForwardReferencedFunctions();
}
-bool BitcodeReader::isDematerializable(const GlobalValue *GV) const {
- const Function *F = dyn_cast<Function>(GV);
- if (!F || F->isDeclaration())
- return false;
-
- // Dematerializing F would leave dangling references that wouldn't be
- // reconnected on re-materialization.
- if (BlockAddressesTaken.count(F))
- return false;
-
- return DeferredFunctionInfo.count(const_cast<Function*>(F));
-}
-
-void BitcodeReader::dematerialize(GlobalValue *GV) {
- Function *F = dyn_cast<Function>(GV);
- // If this function isn't dematerializable, this is a noop.
- if (!F || !isDematerializable(F))
- return;
-
- assert(DeferredFunctionInfo.count(F) && "No info to read function later?");
-
- // Just forget the function body, we can remat it later.
- F->dropAllReferences();
- F->setIsMaterializable(true);
-}
-
-std::error_code BitcodeReader::materializeModule(Module *M) {
- assert(M == TheModule &&
- "Can only Materialize the Module this BitcodeReader is attached to.");
-
+std::error_code BitcodeReader::materializeModule() {
if (std::error_code EC = materializeMetadata())
return EC;
// Iterate over the module, deserializing any functions that are still on
// disk.
- for (Module::iterator F = TheModule->begin(), E = TheModule->end();
- F != E; ++F) {
- if (std::error_code EC = materialize(F))
+ for (Function &F : *TheModule) {
+ if (std::error_code EC = materialize(&F))
return EC;
}
- // At this point, if there are any function bodies, the current bit is
- // pointing to the END_BLOCK record after them. Now make sure the rest
- // of the bits in the module have been read.
- if (NextUnreadBit)
- ParseModule(true);
+ // At this point, if there are any function bodies, parse the rest of
+ // the bits in the module past the last function block we have recorded
+ // through either lazy scanning or the VST.
+ if (LastFunctionBlockBit || NextUnreadBit)
+ parseModule(LastFunctionBlockBit > NextUnreadBit ? LastFunctionBlockBit
+ : NextUnreadBit);
// Check that all block address forward references got resolved (as we
// promised above).
if (!BasicBlockFwdRefs.empty())
- return Error("Never resolved function from blockaddress");
+ return error("Never resolved function from blockaddress");
// Upgrade any intrinsic calls that slipped through (should not happen!) and
// delete the old functions to clean up. We can't do this unless the entire
// module is materialized because there could always be another function body
// with calls to the old function.
- for (std::vector<std::pair<Function*, Function*> >::iterator I =
- UpgradedIntrinsics.begin(), E = UpgradedIntrinsics.end(); I != E; ++I) {
- if (I->first != I->second) {
- for (auto UI = I->first->user_begin(), UE = I->first->user_end();
- UI != UE;) {
- if (CallInst* CI = dyn_cast<CallInst>(*UI++))
- UpgradeIntrinsicCall(CI, I->second);
- }
- if (!I->first->use_empty())
- I->first->replaceAllUsesWith(I->second);
- I->first->eraseFromParent();
- }
+ for (auto &I : UpgradedIntrinsics) {
+ for (auto *U : I.first->users()) {
+ if (CallInst *CI = dyn_cast<CallInst>(U))
+ UpgradeIntrinsicCall(CI, I.second);
+ }
+ if (!I.first->use_empty())
+ I.first->replaceAllUsesWith(I.second);
+ I.first->eraseFromParent();
}
- std::vector<std::pair<Function*, Function*> >().swap(UpgradedIntrinsics);
+ UpgradedIntrinsics.clear();
for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
- UpgradeDebugInfo(*M);
+ UpgradeDebugInfo(*TheModule);
return std::error_code();
}
return IdentifiedStructTypes;
}
-std::error_code BitcodeReader::InitStream() {
- if (LazyStreamer)
- return InitLazyStream();
- return InitStreamFromBuffer();
+std::error_code
+BitcodeReader::initStream(std::unique_ptr<DataStreamer> Streamer) {
+ if (Streamer)
+ return initLazyStream(std::move(Streamer));
+ return initStreamFromBuffer();
}
-std::error_code BitcodeReader::InitStreamFromBuffer() {
+std::error_code BitcodeReader::initStreamFromBuffer() {
const unsigned char *BufPtr = (const unsigned char*)Buffer->getBufferStart();
const unsigned char *BufEnd = BufPtr+Buffer->getBufferSize();
if (Buffer->getBufferSize() & 3)
- return Error("Invalid bitcode signature");
+ return error("Invalid bitcode signature");
// If we have a wrapper header, parse it and ignore the non-bc file contents.
// The magic number is 0x0B17C0DE stored in little endian.
if (isBitcodeWrapper(BufPtr, BufEnd))
if (SkipBitcodeWrapperHeader(BufPtr, BufEnd, true))
- return Error("Invalid bitcode wrapper header");
+ return error("Invalid bitcode wrapper header");
StreamFile.reset(new BitstreamReader(BufPtr, BufEnd));
Stream.init(&*StreamFile);
return std::error_code();
}
-std::error_code BitcodeReader::InitLazyStream() {
+std::error_code
+BitcodeReader::initLazyStream(std::unique_ptr<DataStreamer> Streamer) {
// Check and strip off the bitcode wrapper; BitstreamReader expects never to
// see it.
- auto OwnedBytes = llvm::make_unique<StreamingMemoryObject>(LazyStreamer);
+ auto OwnedBytes =
+ llvm::make_unique<StreamingMemoryObject>(std::move(Streamer));
StreamingMemoryObject &Bytes = *OwnedBytes;
StreamFile = llvm::make_unique<BitstreamReader>(std::move(OwnedBytes));
Stream.init(&*StreamFile);
unsigned char buf[16];
if (Bytes.readBytes(buf, 16, 0) != 16)
- return Error("Invalid bitcode signature");
+ return error("Invalid bitcode signature");
if (!isBitcode(buf, buf + 16))
- return Error("Invalid bitcode signature");
+ return error("Invalid bitcode signature");
+
+ if (isBitcodeWrapper(buf, buf + 4)) {
+ const unsigned char *bitcodeStart = buf;
+ const unsigned char *bitcodeEnd = buf + 16;
+ SkipBitcodeWrapperHeader(bitcodeStart, bitcodeEnd, false);
+ Bytes.dropLeadingBytes(bitcodeStart - buf);
+ Bytes.setKnownObjectSize(bitcodeEnd - bitcodeStart);
+ }
+ return std::error_code();
+}
+
+std::error_code FunctionIndexBitcodeReader::error(BitcodeError E,
+ const Twine &Message) {
+ return ::error(DiagnosticHandler, make_error_code(E), Message);
+}
+
+std::error_code FunctionIndexBitcodeReader::error(const Twine &Message) {
+ return ::error(DiagnosticHandler,
+ make_error_code(BitcodeError::CorruptedBitcode), Message);
+}
+
+std::error_code FunctionIndexBitcodeReader::error(BitcodeError E) {
+ return ::error(DiagnosticHandler, make_error_code(E));
+}
+
+FunctionIndexBitcodeReader::FunctionIndexBitcodeReader(
+ MemoryBuffer *Buffer, DiagnosticHandlerFunction DiagnosticHandler,
+ bool IsLazy, bool CheckFuncSummaryPresenceOnly)
+ : DiagnosticHandler(DiagnosticHandler), Buffer(Buffer), IsLazy(IsLazy),
+ CheckFuncSummaryPresenceOnly(CheckFuncSummaryPresenceOnly) {}
+
+FunctionIndexBitcodeReader::FunctionIndexBitcodeReader(
+ DiagnosticHandlerFunction DiagnosticHandler, bool IsLazy,
+ bool CheckFuncSummaryPresenceOnly)
+ : DiagnosticHandler(DiagnosticHandler), Buffer(nullptr), IsLazy(IsLazy),
+ CheckFuncSummaryPresenceOnly(CheckFuncSummaryPresenceOnly) {}
+
+void FunctionIndexBitcodeReader::freeState() { Buffer = nullptr; }
+
+void FunctionIndexBitcodeReader::releaseBuffer() { Buffer.release(); }
+
+// Specialized value symbol table parser used when reading function index
+// blocks where we don't actually create global values.
+// At the end of this routine the function index is populated with a map
+// from function name to FunctionInfo. The function info contains
+// the function block's bitcode offset as well as the offset into the
+// function summary section.
+std::error_code FunctionIndexBitcodeReader::parseValueSymbolTable() {
+ if (Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID))
+ return error("Invalid record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records for this value table.
+ SmallString<128> ValueName;
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
+ }
+
+ // Read a record.
+ Record.clear();
+ switch (Stream.readRecord(Entry.ID, Record)) {
+ default: // Default behavior: ignore (e.g. VST_CODE_BBENTRY records).
+ break;
+ case bitc::VST_CODE_FNENTRY: {
+ // VST_FNENTRY: [valueid, offset, namechar x N]
+ if (convertToString(Record, 2, ValueName))
+ return error("Invalid record");
+ unsigned ValueID = Record[0];
+ uint64_t FuncOffset = Record[1];
+ std::unique_ptr<FunctionInfo> FuncInfo =
+ llvm::make_unique<FunctionInfo>(FuncOffset);
+ if (foundFuncSummary() && !IsLazy) {
+ DenseMap<uint64_t, std::unique_ptr<FunctionSummary>>::iterator SMI =
+ SummaryMap.find(ValueID);
+ assert(SMI != SummaryMap.end() && "Summary info not found");
+ FuncInfo->setFunctionSummary(std::move(SMI->second));
+ }
+ TheIndex->addFunctionInfo(ValueName, std::move(FuncInfo));
+
+ ValueName.clear();
+ break;
+ }
+ case bitc::VST_CODE_COMBINED_FNENTRY: {
+ // VST_FNENTRY: [offset, namechar x N]
+ if (convertToString(Record, 1, ValueName))
+ return error("Invalid record");
+ uint64_t FuncSummaryOffset = Record[0];
+ std::unique_ptr<FunctionInfo> FuncInfo =
+ llvm::make_unique<FunctionInfo>(FuncSummaryOffset);
+ if (foundFuncSummary() && !IsLazy) {
+ DenseMap<uint64_t, std::unique_ptr<FunctionSummary>>::iterator SMI =
+ SummaryMap.find(FuncSummaryOffset);
+ assert(SMI != SummaryMap.end() && "Summary info not found");
+ FuncInfo->setFunctionSummary(std::move(SMI->second));
+ }
+ TheIndex->addFunctionInfo(ValueName, std::move(FuncInfo));
+
+ ValueName.clear();
+ break;
+ }
+ }
+ }
+}
+
+// Parse just the blocks needed for function index building out of the module.
+// At the end of this routine the function Index is populated with a map
+// from function name to FunctionInfo. The function info contains
+// either the parsed function summary information (when parsing summaries
+// eagerly), or just to the function summary record's offset
+// if parsing lazily (IsLazy).
+std::error_code FunctionIndexBitcodeReader::parseModule() {
+ if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
+ return error("Invalid record");
+
+ // Read the function index for this module.
+ while (1) {
+ BitstreamEntry Entry = Stream.advance();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+
+ case BitstreamEntry::SubBlock:
+ if (CheckFuncSummaryPresenceOnly) {
+ if (Entry.ID == bitc::FUNCTION_SUMMARY_BLOCK_ID) {
+ SeenFuncSummary = true;
+ // No need to parse the rest since we found the summary.
+ return std::error_code();
+ }
+ if (Stream.SkipBlock())
+ return error("Invalid record");
+ continue;
+ }
+ switch (Entry.ID) {
+ default: // Skip unknown content.
+ if (Stream.SkipBlock())
+ return error("Invalid record");
+ break;
+ case bitc::BLOCKINFO_BLOCK_ID:
+ // Need to parse these to get abbrev ids (e.g. for VST)
+ if (Stream.ReadBlockInfoBlock())
+ return error("Malformed block");
+ break;
+ case bitc::VALUE_SYMTAB_BLOCK_ID:
+ if (std::error_code EC = parseValueSymbolTable())
+ return EC;
+ break;
+ case bitc::FUNCTION_SUMMARY_BLOCK_ID:
+ SeenFuncSummary = true;
+ if (IsLazy) {
+ // Lazy parsing of summary info, skip it.
+ if (Stream.SkipBlock())
+ return error("Invalid record");
+ } else if (std::error_code EC = parseEntireSummary())
+ return EC;
+ break;
+ case bitc::MODULE_STRTAB_BLOCK_ID:
+ if (std::error_code EC = parseModuleStringTable())
+ return EC;
+ break;
+ }
+ continue;
+
+ case BitstreamEntry::Record:
+ Stream.skipRecord(Entry.ID);
+ continue;
+ }
+ }
+}
+
+// Eagerly parse the entire function summary block (i.e. for all functions
+// in the index). This populates the FunctionSummary objects in
+// the index.
+std::error_code FunctionIndexBitcodeReader::parseEntireSummary() {
+ if (Stream.EnterSubBlock(bitc::FUNCTION_SUMMARY_BLOCK_ID))
+ return error("Invalid record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
+ }
+
+ // Read a record. The record format depends on whether this
+ // is a per-module index or a combined index file. In the per-module
+ // case the records contain the associated value's ID for correlation
+ // with VST entries. In the combined index the correlation is done
+ // via the bitcode offset of the summary records (which were saved
+ // in the combined index VST entries). The records also contain
+ // information used for ThinLTO renaming and importing.
+ Record.clear();
+ uint64_t CurRecordBit = Stream.GetCurrentBitNo();
+ switch (Stream.readRecord(Entry.ID, Record)) {
+ default: // Default behavior: ignore.
+ break;
+ // FS_PERMODULE_ENTRY: [valueid, islocal, instcount]
+ case bitc::FS_CODE_PERMODULE_ENTRY: {
+ unsigned ValueID = Record[0];
+ bool IsLocal = Record[1];
+ unsigned InstCount = Record[2];
+ std::unique_ptr<FunctionSummary> FS =
+ llvm::make_unique<FunctionSummary>(InstCount);
+ FS->setLocalFunction(IsLocal);
+ // The module path string ref set in the summary must be owned by the
+ // index's module string table. Since we don't have a module path
+ // string table section in the per-module index, we create a single
+ // module path string table entry with an empty (0) ID to take
+ // ownership.
+ FS->setModulePath(
+ TheIndex->addModulePath(Buffer->getBufferIdentifier(), 0));
+ SummaryMap[ValueID] = std::move(FS);
+ }
+ // FS_COMBINED_ENTRY: [modid, instcount]
+ case bitc::FS_CODE_COMBINED_ENTRY: {
+ uint64_t ModuleId = Record[0];
+ unsigned InstCount = Record[1];
+ std::unique_ptr<FunctionSummary> FS =
+ llvm::make_unique<FunctionSummary>(InstCount);
+ FS->setModulePath(ModuleIdMap[ModuleId]);
+ SummaryMap[CurRecordBit] = std::move(FS);
+ }
+ }
+ }
+ llvm_unreachable("Exit infinite loop");
+}
+
+// Parse the module string table block into the Index.
+// This populates the ModulePathStringTable map in the index.
+std::error_code FunctionIndexBitcodeReader::parseModuleStringTable() {
+ if (Stream.EnterSubBlock(bitc::MODULE_STRTAB_BLOCK_ID))
+ return error("Invalid record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ SmallString<128> ModulePath;
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return error("Malformed block");
+ case BitstreamEntry::EndBlock:
+ return std::error_code();
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
+ }
+
+ Record.clear();
+ switch (Stream.readRecord(Entry.ID, Record)) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::MST_CODE_ENTRY: {
+ // MST_ENTRY: [modid, namechar x N]
+ if (convertToString(Record, 1, ModulePath))
+ return error("Invalid record");
+ uint64_t ModuleId = Record[0];
+ StringRef ModulePathInMap = TheIndex->addModulePath(ModulePath, ModuleId);
+ ModuleIdMap[ModuleId] = ModulePathInMap;
+ ModulePath.clear();
+ break;
+ }
+ }
+ }
+ llvm_unreachable("Exit infinite loop");
+}
+
+// Parse the function info index from the bitcode streamer into the given index.
+std::error_code FunctionIndexBitcodeReader::parseSummaryIndexInto(
+ std::unique_ptr<DataStreamer> Streamer, FunctionInfoIndex *I) {
+ TheIndex = I;
+
+ if (std::error_code EC = initStream(std::move(Streamer)))
+ return EC;
+
+ // Sniff for the signature.
+ if (!hasValidBitcodeHeader(Stream))
+ return error("Invalid bitcode signature");
+
+ // We expect a number of well-defined blocks, though we don't necessarily
+ // need to understand them all.
+ while (1) {
+ if (Stream.AtEndOfStream()) {
+ // We didn't really read a proper Module block.
+ return error("Malformed block");
+ }
+
+ BitstreamEntry Entry =
+ Stream.advance(BitstreamCursor::AF_DontAutoprocessAbbrevs);
+
+ if (Entry.Kind != BitstreamEntry::SubBlock)
+ return error("Malformed block");
+
+ // If we see a MODULE_BLOCK, parse it to find the blocks needed for
+ // building the function summary index.
+ if (Entry.ID == bitc::MODULE_BLOCK_ID)
+ return parseModule();
+
+ if (Stream.SkipBlock())
+ return error("Invalid record");
+ }
+}
+
+// Parse the function information at the given offset in the buffer into
+// the index. Used to support lazy parsing of function summaries from the
+// combined index during importing.
+// TODO: This function is not yet complete as it won't have a consumer
+// until ThinLTO function importing is added.
+std::error_code FunctionIndexBitcodeReader::parseFunctionSummary(
+ std::unique_ptr<DataStreamer> Streamer, FunctionInfoIndex *I,
+ size_t FunctionSummaryOffset) {
+ TheIndex = I;
+
+ if (std::error_code EC = initStream(std::move(Streamer)))
+ return EC;
+
+ // Sniff for the signature.
+ if (!hasValidBitcodeHeader(Stream))
+ return error("Invalid bitcode signature");
+
+ Stream.JumpToBit(FunctionSummaryOffset);
+
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ default:
+ return error("Malformed block");
+ case BitstreamEntry::Record:
+ // The expected case.
+ break;
+ }
+
+ // TODO: Read a record. This interface will be completed when ThinLTO
+ // importing is added so that it can be tested.
+ SmallVector<uint64_t, 64> Record;
+ switch (Stream.readRecord(Entry.ID, Record)) {
+ case bitc::FS_CODE_COMBINED_ENTRY:
+ default:
+ return error("Invalid record");
+ }
+
+ return std::error_code();
+}
+
+std::error_code
+FunctionIndexBitcodeReader::initStream(std::unique_ptr<DataStreamer> Streamer) {
+ if (Streamer)
+ return initLazyStream(std::move(Streamer));
+ return initStreamFromBuffer();
+}
+
+std::error_code FunctionIndexBitcodeReader::initStreamFromBuffer() {
+ const unsigned char *BufPtr = (const unsigned char *)Buffer->getBufferStart();
+ const unsigned char *BufEnd = BufPtr + Buffer->getBufferSize();
+
+ if (Buffer->getBufferSize() & 3)
+ return error("Invalid bitcode signature");
+
+ // If we have a wrapper header, parse it and ignore the non-bc file contents.
+ // The magic number is 0x0B17C0DE stored in little endian.
+ if (isBitcodeWrapper(BufPtr, BufEnd))
+ if (SkipBitcodeWrapperHeader(BufPtr, BufEnd, true))
+ return error("Invalid bitcode wrapper header");
+
+ StreamFile.reset(new BitstreamReader(BufPtr, BufEnd));
+ Stream.init(&*StreamFile);
+
+ return std::error_code();
+}
+
+std::error_code FunctionIndexBitcodeReader::initLazyStream(
+ std::unique_ptr<DataStreamer> Streamer) {
+ // Check and strip off the bitcode wrapper; BitstreamReader expects never to
+ // see it.
+ auto OwnedBytes =
+ llvm::make_unique<StreamingMemoryObject>(std::move(Streamer));
+ StreamingMemoryObject &Bytes = *OwnedBytes;
+ StreamFile = llvm::make_unique<BitstreamReader>(std::move(OwnedBytes));
+ Stream.init(&*StreamFile);
+
+ unsigned char buf[16];
+ if (Bytes.readBytes(buf, 16, 0) != 16)
+ return error("Invalid bitcode signature");
+
+ if (!isBitcode(buf, buf + 16))
+ return error("Invalid bitcode signature");
if (isBitcodeWrapper(buf, buf + 4)) {
const unsigned char *bitcodeStart = buf;
// External interface
//===----------------------------------------------------------------------===//
-/// \brief Get a lazy one-at-time loading module from bitcode.
-///
-/// This isn't always used in a lazy context. In particular, it's also used by
-/// \a parseBitcodeFile(). If this is truly lazy, then we need to eagerly pull
-/// in forward-referenced functions from block address references.
-///
-/// \param[in] WillMaterializeAll Set to \c true if the caller promises to
-/// materialize everything -- in particular, if this isn't truly lazy.
-static ErrorOr<Module *>
-getLazyBitcodeModuleImpl(std::unique_ptr<MemoryBuffer> &&Buffer,
- LLVMContext &Context, bool WillMaterializeAll,
- DiagnosticHandlerFunction DiagnosticHandler,
- bool ShouldLazyLoadMetadata = false) {
- Module *M = new Module(Buffer->getBufferIdentifier(), Context);
- BitcodeReader *R =
- new BitcodeReader(Buffer.get(), Context, DiagnosticHandler);
+static ErrorOr<std::unique_ptr<Module>>
+getBitcodeModuleImpl(std::unique_ptr<DataStreamer> Streamer, StringRef Name,
+ BitcodeReader *R, LLVMContext &Context,
+ bool MaterializeAll, bool ShouldLazyLoadMetadata) {
+ std::unique_ptr<Module> M = make_unique<Module>(Name, Context);
M->setMaterializer(R);
auto cleanupOnError = [&](std::error_code EC) {
R->releaseBuffer(); // Never take ownership on error.
- delete M; // Also deletes R.
return EC;
};
// Delay parsing Metadata if ShouldLazyLoadMetadata is true.
- if (std::error_code EC = R->ParseBitcodeInto(M, ShouldLazyLoadMetadata))
+ if (std::error_code EC = R->parseBitcodeInto(std::move(Streamer), M.get(),
+ ShouldLazyLoadMetadata))
return cleanupOnError(EC);
- if (!WillMaterializeAll)
+ if (MaterializeAll) {
+ // Read in the entire module, and destroy the BitcodeReader.
+ if (std::error_code EC = M->materializeAll())
+ return cleanupOnError(EC);
+ } else {
// Resolve forward references from blockaddresses.
if (std::error_code EC = R->materializeForwardReferencedFunctions())
return cleanupOnError(EC);
+ }
+ return std::move(M);
+}
+
+/// \brief Get a lazy one-at-time loading module from bitcode.
+///
+/// This isn't always used in a lazy context. In particular, it's also used by
+/// \a parseBitcodeFile(). If this is truly lazy, then we need to eagerly pull
+/// in forward-referenced functions from block address references.
+///
+/// \param[in] MaterializeAll Set to \c true if we should materialize
+/// everything.
+static ErrorOr<std::unique_ptr<Module>>
+getLazyBitcodeModuleImpl(std::unique_ptr<MemoryBuffer> &&Buffer,
+ LLVMContext &Context, bool MaterializeAll,
+ bool ShouldLazyLoadMetadata = false) {
+ BitcodeReader *R = new BitcodeReader(Buffer.get(), Context);
+
+ ErrorOr<std::unique_ptr<Module>> Ret =
+ getBitcodeModuleImpl(nullptr, Buffer->getBufferIdentifier(), R, Context,
+ MaterializeAll, ShouldLazyLoadMetadata);
+ if (!Ret)
+ return Ret;
Buffer.release(); // The BitcodeReader owns it now.
- return M;
+ return Ret;
}
-ErrorOr<Module *>
+ErrorOr<std::unique_ptr<Module>>
llvm::getLazyBitcodeModule(std::unique_ptr<MemoryBuffer> &&Buffer,
- LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler,
- bool ShouldLazyLoadMetadata) {
+ LLVMContext &Context, bool ShouldLazyLoadMetadata) {
return getLazyBitcodeModuleImpl(std::move(Buffer), Context, false,
- DiagnosticHandler, ShouldLazyLoadMetadata);
+ ShouldLazyLoadMetadata);
}
ErrorOr<std::unique_ptr<Module>>
-llvm::getStreamedBitcodeModule(StringRef Name, DataStreamer *Streamer,
- LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler) {
+llvm::getStreamedBitcodeModule(StringRef Name,
+ std::unique_ptr<DataStreamer> Streamer,
+ LLVMContext &Context) {
std::unique_ptr<Module> M = make_unique<Module>(Name, Context);
- BitcodeReader *R = new BitcodeReader(Streamer, Context, DiagnosticHandler);
- M->setMaterializer(R);
- if (std::error_code EC = R->ParseBitcodeInto(M.get()))
- return EC;
- return std::move(M);
+ BitcodeReader *R = new BitcodeReader(Context);
+
+ return getBitcodeModuleImpl(std::move(Streamer), Name, R, Context, false,
+ false);
}
-ErrorOr<Module *>
-llvm::parseBitcodeFile(MemoryBufferRef Buffer, LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler) {
+ErrorOr<std::unique_ptr<Module>> llvm::parseBitcodeFile(MemoryBufferRef Buffer,
+ LLVMContext &Context) {
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Buffer, false);
- ErrorOr<Module *> ModuleOrErr = getLazyBitcodeModuleImpl(
- std::move(Buf), Context, true, DiagnosticHandler);
- if (!ModuleOrErr)
- return ModuleOrErr;
- Module *M = ModuleOrErr.get();
- // Read in the entire module, and destroy the BitcodeReader.
- if (std::error_code EC = M->materializeAllPermanently()) {
- delete M;
- return EC;
- }
-
+ return getLazyBitcodeModuleImpl(std::move(Buf), Context, true);
// TODO: Restore the use-lists to the in-memory state when the bitcode was
// written. We must defer until the Module has been fully materialized.
-
- return M;
}
-std::string
-llvm::getBitcodeTargetTriple(MemoryBufferRef Buffer, LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler) {
+std::string llvm::getBitcodeTargetTriple(MemoryBufferRef Buffer,
+ LLVMContext &Context) {
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Buffer, false);
- auto R = llvm::make_unique<BitcodeReader>(Buf.release(), Context,
- DiagnosticHandler);
+ auto R = llvm::make_unique<BitcodeReader>(Buf.release(), Context);
ErrorOr<std::string> Triple = R->parseTriple();
if (Triple.getError())
return "";
return Triple.get();
}
+
+std::string llvm::getBitcodeProducerString(MemoryBufferRef Buffer,
+ LLVMContext &Context) {
+ std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Buffer, false);
+ BitcodeReader R(Buf.release(), Context);
+ ErrorOr<std::string> ProducerString = R.parseIdentificationBlock();
+ if (ProducerString.getError())
+ return "";
+ return ProducerString.get();
+}
+
+// Parse the specified bitcode buffer, returning the function info index.
+// If IsLazy is false, parse the entire function summary into
+// the index. Otherwise skip the function summary section, and only create
+// an index object with a map from function name to function summary offset.
+// The index is used to perform lazy function summary reading later.
+ErrorOr<std::unique_ptr<FunctionInfoIndex>>
+llvm::getFunctionInfoIndex(MemoryBufferRef Buffer,
+ DiagnosticHandlerFunction DiagnosticHandler,
+ bool IsLazy) {
+ std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Buffer, false);
+ FunctionIndexBitcodeReader R(Buf.get(), DiagnosticHandler, IsLazy);
+
+ auto Index = llvm::make_unique<FunctionInfoIndex>();
+
+ auto cleanupOnError = [&](std::error_code EC) {
+ R.releaseBuffer(); // Never take ownership on error.
+ return EC;
+ };
+
+ if (std::error_code EC = R.parseSummaryIndexInto(nullptr, Index.get()))
+ return cleanupOnError(EC);
+
+ Buf.release(); // The FunctionIndexBitcodeReader owns it now.
+ return std::move(Index);
+}
+
+// Check if the given bitcode buffer contains a function summary block.
+bool llvm::hasFunctionSummary(MemoryBufferRef Buffer,
+ DiagnosticHandlerFunction DiagnosticHandler) {
+ std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Buffer, false);
+ FunctionIndexBitcodeReader R(Buf.get(), DiagnosticHandler, false, true);
+
+ auto cleanupOnError = [&](std::error_code EC) {
+ R.releaseBuffer(); // Never take ownership on error.
+ return false;
+ };
+
+ if (std::error_code EC = R.parseSummaryIndexInto(nullptr, nullptr))
+ return cleanupOnError(EC);
+
+ Buf.release(); // The FunctionIndexBitcodeReader owns it now.
+ return R.foundFuncSummary();
+}
+
+// This method supports lazy reading of function summary data from the combined
+// index during ThinLTO function importing. When reading the combined index
+// file, getFunctionInfoIndex is first invoked with IsLazy=true.
+// Then this method is called for each function considered for importing,
+// to parse the summary information for the given function name into
+// the index.
+std::error_code llvm::readFunctionSummary(
+ MemoryBufferRef Buffer, DiagnosticHandlerFunction DiagnosticHandler,
+ StringRef FunctionName, std::unique_ptr<FunctionInfoIndex> Index) {
+ std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Buffer, false);
+ FunctionIndexBitcodeReader R(Buf.get(), DiagnosticHandler);
+
+ auto cleanupOnError = [&](std::error_code EC) {
+ R.releaseBuffer(); // Never take ownership on error.
+ return EC;
+ };
+
+ // Lookup the given function name in the FunctionMap, which may
+ // contain a list of function infos in the case of a COMDAT. Walk through
+ // and parse each function summary info at the function summary offset
+ // recorded when parsing the value symbol table.
+ for (const auto &FI : Index->getFunctionInfoList(FunctionName)) {
+ size_t FunctionSummaryOffset = FI->bitcodeIndex();
+ if (std::error_code EC =
+ R.parseFunctionSummary(nullptr, Index.get(), FunctionSummaryOffset))
+ return cleanupOnError(EC);
+ }
+
+ Buf.release(); // The FunctionIndexBitcodeReader owns it now.
+ return std::error_code();
+}
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