#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"
SWITCH_INST_MAGIC = 0x4B5 // May 2012 => 1205 => Hex
};
-/// Indicates which operator an operand allows (for the few operands that may
-/// only reference a certain operator).
-enum OperatorConstraint {
- OC_None = 0, // No constraint
- OC_CatchPad, // Must be CatchPadInst
- OC_CleanupPad // Must be CleanupPadInst
-};
-
class BitcodeReaderValueList {
std::vector<WeakVH> ValuePtrs;
}
Constant *getConstantFwdRef(unsigned Idx, Type *Ty);
- Value *getValueFwdRef(unsigned Idx, Type *Ty,
- OperatorConstraint OC = OC_None);
+ Value *getValueFwdRef(unsigned Idx, Type *Ty);
- bool assignValue(Value *V, unsigned Idx);
+ void assignValue(Value *V, unsigned Idx);
/// 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);
class BitcodeReader : public GVMaterializer {
LLVMContext &Context;
- DiagnosticHandlerFunction DiagnosticHandler;
Module *TheModule = nullptr;
std::unique_ptr<MemoryBuffer> Buffer;
std::unique_ptr<BitstreamReader> StreamFile;
BitstreamCursor Stream;
+ // 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;
- unsigned VSTOffset = 0;
+ 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;
/// (e.g.) blockaddress forward references.
bool WillMaterializeAllForwardRefs = false;
- /// Functions that have block addresses taken. This is usually empty.
- SmallPtrSet<const Function *, 4> BlockAddressesTaken;
-
/// True if any Metadata block has been materialized.
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);
- BitcodeReader(MemoryBuffer *Buffer, LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler);
- BitcodeReader(LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler);
+ BitcodeReader(MemoryBuffer *Buffer, LLVMContext &Context);
+ BitcodeReader(LLVMContext &Context);
~BitcodeReader() override { freeState(); }
std::error_code materializeForwardReferencedFunctions();
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.
/// \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);
Type *getTypeByID(unsigned ID);
- Value *getFnValueByID(unsigned ID, Type *Ty,
- OperatorConstraint OC = OC_None) {
+ Value *getFnValueByID(unsigned ID, Type *Ty) {
if (Ty && Ty->isMetadataTy())
return MetadataAsValue::get(Ty->getContext(), getFnMetadataByID(ID));
- return ValueList.getValueFwdRef(ID, Ty, OC);
+ 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
/// 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,
- OperatorConstraint OC = OC_None) {
- if (getValue(Record, Slot, InstNum, Ty, ResVal, OC))
+ unsigned InstNum, Type *Ty, Value *&ResVal) {
+ if (getValue(Record, Slot, InstNum, Ty, ResVal))
return true;
// All values currently take a single record slot.
++Slot;
/// Like popValue, but does not increment the Slot number.
bool getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
- unsigned InstNum, Type *Ty, Value *&ResVal,
- OperatorConstraint OC = OC_None) {
- ResVal = getValue(Record, Slot, InstNum, Ty, OC);
+ unsigned InstNum, Type *Ty, Value *&ResVal) {
+ ResVal = getValue(Record, Slot, InstNum, Ty);
return ResVal == nullptr;
}
/// 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, OperatorConstraint OC = OC_None) {
+ unsigned InstNum, Type *Ty) {
if (Slot == Record.size()) return nullptr;
unsigned ValNo = (unsigned)Record[Slot];
// Adjust the ValNo, if it was encoded relative to the InstNum.
if (UseRelativeIDs)
ValNo = InstNum - ValNo;
- return getFnValueByID(ValNo, Ty, OC);
+ return getFnValueByID(ValNo, Ty);
}
/// Like getValue, but decodes signed VBRs.
Value *getValueSigned(SmallVectorImpl<uint64_t> &Record, unsigned Slot,
- unsigned InstNum, Type *Ty,
- OperatorConstraint OC = OC_None) {
+ unsigned InstNum, Type *Ty) {
if (Slot == Record.size()) return nullptr;
unsigned ValNo = (unsigned)decodeSignRotatedValue(Record[Slot]);
// Adjust the ValNo, if it was encoded relative to the InstNum.
if (UseRelativeIDs)
ValNo = InstNum - ValNo;
- return getFnValueByID(ValNo, Ty, OC);
+ return getFnValueByID(ValNo, Ty);
}
/// Converts alignment exponent (i.e. power of two (or zero)) to the
/// 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 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(unsigned Offset = 0);
+ 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 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();
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,
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);
+}
+
+static std::error_code error(LLVMContext &Context, std::error_code EC) {
+ return error(Context, EC, EC.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) {
- return ::error(DiagnosticHandler, make_error_code(E), 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(const Twine &Message) {
- return ::error(DiagnosticHandler,
- make_error_code(BitcodeError::CorruptedBitcode), 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);
}
std::error_code BitcodeReader::error(BitcodeError E) {
- return ::error(DiagnosticHandler, make_error_code(E));
-}
-
-static DiagnosticHandlerFunction getDiagHandler(DiagnosticHandlerFunction F,
- LLVMContext &C) {
- if (F)
- return F;
- return [&C](const DiagnosticInfo &DI) { C.diagnose(DI); };
+ return ::error(Context, make_error_code(E));
}
-BitcodeReader::BitcodeReader(MemoryBuffer *Buffer, LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler)
- : Context(Context),
- DiagnosticHandler(getDiagHandler(DiagnosticHandler, Context)),
- Buffer(Buffer), ValueList(Context), MDValueList(Context) {}
+BitcodeReader::BitcodeReader(MemoryBuffer *Buffer, LLVMContext &Context)
+ : Context(Context), Buffer(Buffer), ValueList(Context),
+ MetadataList(Context) {}
-BitcodeReader::BitcodeReader(LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler)
- : Context(Context),
- DiagnosticHandler(getDiagHandler(DiagnosticHandler, Context)),
- Buffer(nullptr), ValueList(Context), MDValueList(Context) {}
+BitcodeReader::BitcodeReader(LLVMContext &Context)
+ : Context(Context), Buffer(nullptr), ValueList(Context),
+ MetadataList(Context) {}
std::error_code BitcodeReader::materializeForwardReferencedFunctions() {
if (WillMaterializeAllForwardRefs)
Buffer = nullptr;
std::vector<Type*>().swap(TypeList);
ValueList.clear();
- MDValueList.clear();
+ MetadataList.clear();
std::vector<Comdat *>().swap(ComdatList);
std::vector<AttributeSet>().swap(MAttributes);
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ConstantPlaceHolder, Value)
}
-bool BitcodeReaderValueList::assignValue(Value *V, unsigned Idx) {
+void BitcodeReaderValueList::assignValue(Value *V, unsigned Idx) {
if (Idx == size()) {
push_back(V);
- return false;
+ return;
}
if (Idx >= size())
WeakVH &OldV = ValuePtrs[Idx];
if (!OldV) {
OldV = V;
- return false;
+ return;
}
// Handle constants and non-constants (e.g. instrs) differently for
} else {
// If there was a forward reference to this value, replace it.
Value *PrevVal = OldV;
- // Check operator constraints. We only put cleanuppads or catchpads in
- // the forward value map if the value is constrained to match.
- if (CatchPadInst *CatchPad = dyn_cast<CatchPadInst>(PrevVal)) {
- if (!isa<CatchPadInst>(V))
- return true;
- // Delete the dummy basic block that was created with the sentinel
- // catchpad.
- BasicBlock *DummyBlock = CatchPad->getUnwindDest();
- assert(DummyBlock == CatchPad->getNormalDest());
- CatchPad->dropAllReferences();
- delete DummyBlock;
- } else if (isa<CleanupPadInst>(PrevVal)) {
- if (!isa<CleanupPadInst>(V))
- return true;
- }
OldV->replaceAllUsesWith(V);
delete PrevVal;
}
- return false;
+ return;
}
return C;
}
-Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty,
- OperatorConstraint OC) {
+Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty) {
// Bail out for a clearly invalid value. This would make us call resize(0)
if (Idx == UINT_MAX)
return nullptr;
// If the types don't match, it's invalid.
if (Ty && Ty != V->getType())
return nullptr;
- if (!OC)
- return V;
- // Use dyn_cast to enforce operator constraints
- switch (OC) {
- case OC_CatchPad:
- return dyn_cast<CatchPadInst>(V);
- case OC_CleanupPad:
- return dyn_cast<CleanupPadInst>(V);
- default:
- llvm_unreachable("Unexpected operator constraint");
- }
+ return V;
}
// No type specified, must be invalid reference.
if (!Ty) return nullptr;
// Create and return a placeholder, which will later be RAUW'd.
- Value *V;
- switch (OC) {
- case OC_None:
- V = new Argument(Ty);
- break;
- case OC_CatchPad: {
- BasicBlock *BB = BasicBlock::Create(Context);
- V = CatchPadInst::Create(BB, BB, {});
- break;
- }
- default:
- assert(OC == OC_CleanupPad && "unexpected operator constraint");
- V = CleanupPadInst::Create(Context, {});
- break;
- }
-
+ Value *V = new Argument(Ty);
ValuePtrs[Idx] = V;
return V;
}
}
}
-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;
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:
}
}
+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) {
return error("Invalid record");
Value *V = ValueList[ValueID];
- V->setName(StringRef(ValueName.data(), ValueName.size()));
+ 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)) {
/// Parse the value symbol table at either the current parsing location or
/// at the given bit offset if provided.
-std::error_code BitcodeReader::parseValueSymbolTable(unsigned Offset) {
+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
assert(F);
uint64_t FuncBitOffset = FuncWordOffset * 32;
DeferredFunctionInfo[F] = FuncBitOffset + FuncBitcodeOffsetDelta;
- // Set the NextUnreadBit to point to the last function block.
+ // 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 > NextUnreadBit)
- NextUnreadBit = FuncBitOffset;
+ if (FuncBitOffset > LastFunctionBlockBit)
+ LastFunctionBlockBit = FuncBitOffset;
break;
}
case bitc::VST_CODE_BBENTRY: {
}
}
+/// 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");
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);
case BitstreamEntry::Error:
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 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");
NMD->addOperand(MD);
// 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: {
if (!Ty)
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 (Ty->isMetadataTy() || Ty->isVoidTy())
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: {
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: {
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");
- 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");
- 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");
- 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");
- 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");
- 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");
- MDValueList.assignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DISubroutineType, Record[0],
(Context, Record[1], getMDOrNull(Record[2]))),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
if (Record.size() != 6)
return error("Invalid record");
- MDValueList.assignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DIModule, Record[0],
(Context, getMDOrNull(Record[1]),
- getMDString(Record[2]), getMDString(Record[3]),
- getMDString(Record[4]), getMDString(Record[5]))),
- NextMDValueNo++);
+ getMDString(Record[2]), getMDString(Record[3]),
+ getMDString(Record[4]), getMDString(Record[5]))),
+ NextMetadataNo++);
break;
}
if (Record.size() != 3)
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)
+ if (Record.size() < 14 || Record.size() > 16)
return error("Invalid record");
- // Ignore Record[1], which indicates whether this compile unit is
+ // Ignore Record[0], which indicates whether this compile unit is
// distinct. It's always distinct.
- MDValueList.assignValue(
+ 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() == 14 ? 0 : Record[14]),
- NextMDValueNo++);
+ 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] || 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]), 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");
- 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");
- 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");
- 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");
- 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");
- 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");
- 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: {
// 2nd field used to be an artificial tag, either DW_TAG_auto_variable or
// DW_TAG_arg_variable.
bool HasTag = Record.size() > 8;
- MDValueList.assignValue(
+ MetadataList.assignValue(
GET_OR_DISTINCT(DILocalVariable, Record[0],
(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])),
- NextMDValueNo++);
+ NextMetadataNo++);
break;
}
case bitc::METADATA_EXPRESSION: {
if (Record.size() < 1)
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");
- 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");
- 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;
- unsigned Kind = Record[0];
- SmallString<8> Name(Record.begin()+1, Record.end());
+ // Read all the records.
+ 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;
+ }
- 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
}
/// Decode a signed value stored with the sign bit in the LSB for dense VBR
if (!Fn)
return error("Invalid record");
- // Don't let Fn get dematerialized.
- BlockAddressesTaken.insert(Fn);
-
// If the function is already parsed we can insert the block address right
// away.
BasicBlock *BB;
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.
}
}
- if (ValueList.assignValue(V, NextCstNo))
- return error("Invalid forward reference");
+ ValueList.assignValue(V, NextCstNo);
++NextCstNo;
}
}
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];
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; }
+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);
+ assert((!N || (N->isResolved() || N->isTemporary())) &&
+ "Found non-resolved non-temp MDNode while saving metadata");
+ // Save all values if !OnlyTempMD, otherwise just the temporary metadata.
+ // Note that in the !OnlyTempMD case we need to save all Metadata, not
+ // just MDNode, as we may have references to other types of module-level
+ // metadata (e.g. ValueAsMetadata) from instructions.
+ 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() {
// 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.
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");
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:
BitcodeReader::parseValueSymbolTable(VSTOffset))
return EC;
SeenValueSymbolTable = true;
- return std::error_code();
+ // 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 NextUnreadBit points to the start
- // of the last function block recorded in the VST (set when
- // parsing the VST function entries). Skip it.
+ // 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.
+ // 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;
+
// 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
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;
}
continue;
auto *FTy = dyn_cast<FunctionType>(Ty);
if (!FTy)
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));
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();
}
}
+/// 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) != 0x0 ||
+ Stream.Read(4) != 0xC ||
+ Stream.Read(4) != 0xE ||
+ Stream.Read(4) != 0xD)
+ return false;
+ return true;
+}
+
std::error_code
BitcodeReader::parseBitcodeInto(std::unique_ptr<DataStreamer> Streamer,
Module *M, bool ShouldLazyLoadMetadata) {
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)
+ if (!hasValidBitcodeHeader(Stream))
return error("Invalid bitcode signature");
// We expect a number of well-defined blocks, though we don't necessarily
if (Entry.Kind != BitstreamEntry::SubBlock)
return error("Malformed block");
+ if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) {
+ parseBitcodeVersion();
+ continue;
+ }
+
if (Entry.ID == bitc::MODULE_BLOCK_ID)
- return parseModule(false, ShouldLazyLoadMetadata);
+ return parseModule(0, ShouldLazyLoadMetadata);
if (Stream.SkipBlock())
return error("Invalid record");
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)
+ if (!hasValidBitcodeHeader(Stream))
return error("Invalid bitcode signature");
// We expect a number of well-defined blocks, though we don't necessarily
}
}
-/// Parse metadata attachments.
-std::error_code BitcodeReader::parseMetadataAttachment(Function &F) {
- if (Stream.EnterSubBlock(bitc::METADATA_ATTACHMENT_ID))
+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");
SmallVector<uint64_t, 64> Record;
auto K = MDKindMap.find(Record[I]);
if (K == MDKindMap.end())
return error("Invalid ID");
- Metadata *MD = MDValueList.getValueFwdRef(Record[I + 1]);
+ Metadata *MD = MetadataList.getValueFwdRef(Record[I + 1]);
F.setMetadata(K->second, cast<MDNode>(MD));
}
continue;
MDKindMap.find(Kind);
if (I == MDKindMap.end())
return error("Invalid ID");
- Metadata *Node = MDValueList.getValueFwdRef(Record[i + 1]);
+ 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();
}
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) {
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;
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;
if (Record.size() != 1 && Record.size() != 2)
return error("Invalid record");
unsigned Idx = 0;
- Value *CleanupPad = getValue(Record, Idx++, NextValueNo,
- Type::getTokenTy(Context), OC_CleanupPad);
+ Value *CleanupPad =
+ getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context));
if (!CleanupPad)
return error("Invalid record");
BasicBlock *UnwindDest = nullptr;
return error("Invalid record");
}
- I = CleanupReturnInst::Create(cast<CleanupPadInst>(CleanupPad),
- UnwindDest);
+ I = CleanupReturnInst::Create(CleanupPad, UnwindDest);
InstructionList.push_back(I);
break;
}
if (Record.size() != 2)
return error("Invalid record");
unsigned Idx = 0;
- Value *CatchPad = getValue(Record, Idx++, NextValueNo,
- Type::getTokenTy(Context), OC_CatchPad);
+ 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(cast<CatchPadInst>(CatchPad), BB);
+ I = CatchReturnInst::Create(CatchPad, BB);
InstructionList.push_back(I);
break;
}
- case bitc::FUNC_CODE_INST_CATCHPAD: { // CATCHPAD: [bb#,bb#,num,(ty,val)*]
- if (Record.size() < 3)
+ 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;
- BasicBlock *NormalBB = getBasicBlock(Record[Idx++]);
- if (!NormalBB)
- return error("Invalid record");
- BasicBlock *UnwindBB = getBasicBlock(Record[Idx++]);
- if (!UnwindBB)
- return error("Invalid record");
- unsigned NumArgOperands = Record[Idx++];
- SmallVector<Value *, 2> Args;
- for (unsigned Op = 0; Op != NumArgOperands; ++Op) {
- Value *Val;
- if (getValueTypePair(Record, Idx, NextValueNo, Val))
+
+ 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");
- Args.push_back(Val);
+ Handlers.push_back(BB);
}
- if (Record.size() != Idx)
- return error("Invalid record");
- I = CatchPadInst::Create(NormalBB, UnwindBB, Args);
- InstructionList.push_back(I);
- break;
- }
- case bitc::FUNC_CODE_INST_TERMINATEPAD: { // TERMINATEPAD: [bb#,num,(ty,val)*]
- if (Record.size() < 1)
- return error("Invalid record");
- unsigned Idx = 0;
- bool HasUnwindDest = !!Record[Idx++];
BasicBlock *UnwindDest = nullptr;
- if (HasUnwindDest) {
- if (Idx == Record.size())
- return error("Invalid record");
+ if (Idx + 1 == Record.size()) {
UnwindDest = getBasicBlock(Record[Idx++]);
if (!UnwindDest)
return error("Invalid record");
}
- 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");
- I = TerminatePadInst::Create(Context, UnwindDest, Args);
+ 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_CLEANUPPAD: { // CLEANUPPAD: [num,(ty,val)*]
- if (Record.size() < 1)
+ 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;
return error("Invalid record");
Args.push_back(Val);
}
- if (Record.size() != Idx)
- return error("Invalid record");
- I = CleanupPadInst::Create(Context, Args);
- InstructionList.push_back(I);
- break;
- }
- case bitc::FUNC_CODE_INST_CATCHENDPAD: { // CATCHENDPADINST: [bb#] or []
- if (Record.size() > 1)
- return error("Invalid record");
- BasicBlock *BB = nullptr;
- if (Record.size() == 1) {
- BB = getBasicBlock(Record[0]);
- if (!BB)
- return error("Invalid record");
- }
- I = CatchEndPadInst::Create(Context, BB);
- InstructionList.push_back(I);
- break;
- }
- case bitc::FUNC_CODE_INST_CLEANUPENDPAD: { // CLEANUPENDPADINST: [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), OC_CleanupPad);
- if (!CleanupPad)
+ if (Record.size() != Idx)
return error("Invalid record");
- BasicBlock *BB = nullptr;
- if (Record.size() == 2) {
- BB = getBasicBlock(Record[Idx++]);
- if (!BB)
- return error("Invalid record");
- }
- I = CleanupEndPadInst::Create(cast<CleanupPadInst>(CleanupPad), BB);
+ if (BitCode == bitc::FUNC_CODE_INST_CLEANUPPAD)
+ I = CleanupPadInst::Create(ParentPad, Args);
+ else
+ I = CatchPadInst::Create(ParentPad, Args);
InstructionList.push_back(I);
break;
}
}
}
- 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;
}
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();
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();
OpNum + 2 != Record.size())
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))
OpNum + 4 != Record.size())
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]);
if (Ordering == NotAtomic || Ordering == Acquire ||
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)
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");
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");
}
}
- 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]
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
delete I;
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);
// If this was a terminator instruction, move to the next block.
// Non-void values get registered in the value table for future use.
if (I && !I->getType()->isVoidTy())
- if (ValueList.assignValue(I, NextValueNo++))
- return error("Invalid forward reference");
+ 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()) {
// 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();
}
DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator) {
while (DeferredFunctionInfoIterator->second == 0) {
// This is the fallback handling for the old format bitcode that
- // didn't contain the function index in the VST. Assert if we end up
- // here for the new format (which is the only time the VSTOffset would
- // be non-zero).
- assert(VSTOffset == 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))
+ // 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.
// Upgrade any old intrinsic calls in the function.
for (auto &I : UpgradedIntrinsics) {
- for (auto UI = I.first->user_begin(), UE = I.first->user_end(); UI != UE;) {
+ 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))
}
}
+ // 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).
for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
- UpgradeDebugInfo(*M);
+ UpgradeDebugInfo(*TheModule);
return std::error_code();
}
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;
+ const unsigned char *bitcodeEnd = buf + 16;
+ SkipBitcodeWrapperHeader(bitcodeStart, bitcodeEnd, false);
+ Bytes.dropLeadingBytes(bitcodeStart - buf);
+ Bytes.setKnownObjectSize(bitcodeEnd - bitcodeStart);
+ }
+ return std::error_code();
+}
+
namespace {
class BitcodeErrorCategoryType : public std::error_category {
const char *name() const LLVM_NOEXCEPT override {
if (MaterializeAll) {
// Read in the entire module, and destroy the BitcodeReader.
- if (std::error_code EC = M->materializeAllPermanently())
+ if (std::error_code EC = M->materializeAll())
return cleanupOnError(EC);
} else {
// Resolve forward references from blockaddresses.
static ErrorOr<std::unique_ptr<Module>>
getLazyBitcodeModuleImpl(std::unique_ptr<MemoryBuffer> &&Buffer,
LLVMContext &Context, bool MaterializeAll,
- DiagnosticHandlerFunction DiagnosticHandler,
bool ShouldLazyLoadMetadata = false) {
- BitcodeReader *R =
- new BitcodeReader(Buffer.get(), Context, DiagnosticHandler);
+ BitcodeReader *R = new BitcodeReader(Buffer.get(), Context);
ErrorOr<std::unique_ptr<Module>> Ret =
getBitcodeModuleImpl(nullptr, Buffer->getBufferIdentifier(), R, Context,
return Ret;
}
-ErrorOr<std::unique_ptr<Module>> llvm::getLazyBitcodeModule(
- std::unique_ptr<MemoryBuffer> &&Buffer, LLVMContext &Context,
- DiagnosticHandlerFunction DiagnosticHandler, bool ShouldLazyLoadMetadata) {
+ErrorOr<std::unique_ptr<Module>>
+llvm::getLazyBitcodeModule(std::unique_ptr<MemoryBuffer> &&Buffer,
+ LLVMContext &Context, bool ShouldLazyLoadMetadata) {
return getLazyBitcodeModuleImpl(std::move(Buffer), Context, false,
- DiagnosticHandler, ShouldLazyLoadMetadata);
+ ShouldLazyLoadMetadata);
}
-ErrorOr<std::unique_ptr<Module>> llvm::getStreamedBitcodeModule(
- StringRef Name, std::unique_ptr<DataStreamer> Streamer,
- LLVMContext &Context, DiagnosticHandlerFunction DiagnosticHandler) {
+ErrorOr<std::unique_ptr<Module>>
+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(Context, DiagnosticHandler);
+ BitcodeReader *R = new BitcodeReader(Context);
return getBitcodeModuleImpl(std::move(Streamer), Name, R, Context, false,
false);
}
-ErrorOr<std::unique_ptr<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);
- return getLazyBitcodeModuleImpl(std::move(Buf), Context, true,
- DiagnosticHandler);
+ 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.
}
-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();
+}
projects / oota-llvm.git / blobdiff