X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FBitcode%2FReader%2FBitcodeReader.cpp;h=e49cecf3baa496810de9bd0cc9eef96a3fb8f998;hb=db125cfaf57cc83e7dd7453de2d509bc8efd0e5e;hp=be2c1ce98627d486071a70c8310b496f7fd889ae;hpb=7268d97ae6c1680be96e5758c33cdd46efb6ce54;p=oota-llvm.git diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp index be2c1ce9862..e49cecf3baa 100644 --- a/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/lib/Bitcode/Reader/BitcodeReader.cpp @@ -31,7 +31,7 @@ void BitcodeReader::FreeState() { if (BufferOwned) delete Buffer; Buffer = 0; - std::vector().swap(TypeList); + std::vector().swap(TypeList); ValueList.clear(); MDValueList.clear(); @@ -77,6 +77,7 @@ static GlobalValue::LinkageTypes GetDecodedLinkage(unsigned Val) { case 12: return GlobalValue::AvailableExternallyLinkage; case 13: return GlobalValue::LinkerPrivateLinkage; case 14: return GlobalValue::LinkerPrivateWeakLinkage; + case 15: return GlobalValue::LinkerPrivateWeakDefAutoLinkage; } } @@ -106,7 +107,7 @@ static int GetDecodedCastOpcode(unsigned Val) { case bitc::CAST_BITCAST : return Instruction::BitCast; } } -static int GetDecodedBinaryOpcode(unsigned Val, const Type *Ty) { +static int GetDecodedBinaryOpcode(unsigned Val, Type *Ty) { switch (Val) { default: return -1; case bitc::BINOP_ADD: @@ -135,20 +136,19 @@ namespace { /// @brief A class for maintaining the slot number definition /// as a placeholder for the actual definition for forward constants defs. class ConstantPlaceHolder : public ConstantExpr { - ConstantPlaceHolder() ATTRIBUTE_UNUSED; // DO NOT IMPLEMENT - void operator=(const ConstantPlaceHolder &) ATTRIBUTE_UNUSED;//NOT IMPLEMENT + void operator=(const ConstantPlaceHolder &); // DO NOT IMPLEMENT public: // allocate space for exactly one operand void *operator new(size_t s) { return User::operator new(s, 1); } - explicit ConstantPlaceHolder(const Type *Ty, LLVMContext& Context) + explicit ConstantPlaceHolder(Type *Ty, LLVMContext& Context) : ConstantExpr(Ty, Instruction::UserOp1, &Op<0>(), 1) { Op<0>() = UndefValue::get(Type::getInt32Ty(Context)); } /// @brief Methods to support type inquiry through isa, cast, and dyn_cast. - static inline bool classof(const ConstantPlaceHolder *) { return true; } + //static inline bool classof(const ConstantPlaceHolder *) { return true; } static bool classof(const Value *V) { return isa(V) && cast(V)->getOpcode() == Instruction::UserOp1; @@ -162,7 +162,8 @@ namespace { // FIXME: can we inherit this from ConstantExpr? template <> -struct OperandTraits : public FixedNumOperandTraits<1> { +struct OperandTraits : + public FixedNumOperandTraits { }; } @@ -197,7 +198,7 @@ void BitcodeReaderValueList::AssignValue(Value *V, unsigned Idx) { Constant *BitcodeReaderValueList::getConstantFwdRef(unsigned Idx, - const Type *Ty) { + Type *Ty) { if (Idx >= size()) resize(Idx + 1); @@ -212,7 +213,7 @@ Constant *BitcodeReaderValueList::getConstantFwdRef(unsigned Idx, return C; } -Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, const Type *Ty) { +Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty) { if (Idx >= size()) resize(Idx + 1); @@ -291,19 +292,14 @@ void BitcodeReaderValueList::ResolveConstantForwardRefs() { // Make the new constant. Constant *NewC; if (ConstantArray *UserCA = dyn_cast(UserC)) { - NewC = ConstantArray::get(UserCA->getType(), &NewOps[0], - NewOps.size()); + NewC = ConstantArray::get(UserCA->getType(), NewOps); } else if (ConstantStruct *UserCS = dyn_cast(UserC)) { - NewC = ConstantStruct::get(Context, &NewOps[0], NewOps.size(), - UserCS->getType()->isPacked()); - } else if (ConstantUnion *UserCU = dyn_cast(UserC)) { - NewC = ConstantUnion::get(UserCU->getType(), NewOps[0]); + NewC = ConstantStruct::get(UserCS->getType(), NewOps); } else if (isa(UserC)) { - NewC = ConstantVector::get(&NewOps[0], NewOps.size()); + NewC = ConstantVector::get(NewOps); } else { assert(isa(UserC) && "Must be a ConstantExpr."); - NewC = cast(UserC)->getWithOperands(&NewOps[0], - NewOps.size()); + NewC = cast(UserC)->getWithOperands(NewOps); } UserC->replaceAllUsesWith(NewC); @@ -333,9 +329,9 @@ void BitcodeReaderMDValueList::AssignValue(Value *V, unsigned Idx) { } // If there was a forward reference to this value, replace it. - Value *PrevVal = OldV; + MDNode *PrevVal = cast(OldV); OldV->replaceAllUsesWith(V); - delete PrevVal; + MDNode::deleteTemporary(PrevVal); // Deleting PrevVal sets Idx value in MDValuePtrs to null. Set new // value for Idx. MDValuePtrs[Idx] = V; @@ -351,24 +347,33 @@ Value *BitcodeReaderMDValueList::getValueFwdRef(unsigned Idx) { } // Create and return a placeholder, which will later be RAUW'd. - Value *V = new Argument(Type::getMetadataTy(Context)); + Value *V = MDNode::getTemporary(Context, ArrayRef()); MDValuePtrs[Idx] = V; return V; } -const Type *BitcodeReader::getTypeByID(unsigned ID, bool isTypeTable) { - // If the TypeID is in range, return it. - if (ID < TypeList.size()) - return TypeList[ID].get(); - if (!isTypeTable) return 0; - - // The type table allows forward references. Push as many Opaque types as - // needed to get up to ID. - while (TypeList.size() <= ID) - TypeList.push_back(OpaqueType::get(Context)); - return TypeList.back().get(); +Type *BitcodeReader::getTypeByID(unsigned ID) { + // The type table size is always specified correctly. + if (ID >= TypeList.size()) + return 0; + + if (Type *Ty = TypeList[ID]) + return Ty; + + // If we have a forward reference, the only possible case is when it is to a + // named struct. Just create a placeholder for now. + return TypeList[ID] = StructType::createNamed(Context, ""); +} + +/// FIXME: Remove in LLVM 3.1, only used by ParseOldTypeTable. +Type *BitcodeReader::getTypeByIDOrNull(unsigned ID) { + if (ID >= TypeList.size()) + TypeList.resize(ID+1); + + return TypeList[ID]; } + //===----------------------------------------------------------------------===// // Functions for parsing blocks from the bitcode file //===----------------------------------------------------------------------===// @@ -475,17 +480,22 @@ bool BitcodeReader::ParseAttributeBlock() { } } - bool BitcodeReader::ParseTypeTable() { - if (Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID)) + if (Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_NEW)) return Error("Malformed block record"); + + return ParseTypeTableBody(); +} +bool BitcodeReader::ParseTypeTableBody() { if (!TypeList.empty()) return Error("Multiple TYPE_BLOCKs found!"); SmallVector Record; unsigned NumRecords = 0; + SmallString<64> TypeName; + // Read all the records for this type table. while (1) { unsigned Code = Stream.ReadCode(); @@ -512,17 +522,15 @@ bool BitcodeReader::ParseTypeTable() { // Read a record. Record.clear(); - const Type *ResultTy = 0; + Type *ResultTy = 0; switch (Stream.ReadRecord(Code, Record)) { - default: // Default behavior: unknown type. - ResultTy = 0; - break; + default: return Error("unknown type in type table"); case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries] // TYPE_CODE_NUMENTRY contains a count of the number of types in the // type list. This allows us to reserve space. if (Record.size() < 1) return Error("Invalid TYPE_CODE_NUMENTRY record"); - TypeList.reserve(Record[0]); + TypeList.resize(Record[0]); continue; case bitc::TYPE_CODE_VOID: // VOID ResultTy = Type::getVoidTy(Context); @@ -545,12 +553,12 @@ bool BitcodeReader::ParseTypeTable() { case bitc::TYPE_CODE_LABEL: // LABEL ResultTy = Type::getLabelTy(Context); break; - case bitc::TYPE_CODE_OPAQUE: // OPAQUE - ResultTy = 0; - break; case bitc::TYPE_CODE_METADATA: // METADATA ResultTy = Type::getMetadataTy(Context); break; + case bitc::TYPE_CODE_X86_MMX: // X86_MMX + ResultTy = Type::getX86_MMXTy(Context); + break; case bitc::TYPE_CODE_INTEGER: // INTEGER: [width] if (Record.size() < 1) return Error("Invalid Integer type record"); @@ -564,8 +572,9 @@ bool BitcodeReader::ParseTypeTable() { unsigned AddressSpace = 0; if (Record.size() == 2) AddressSpace = Record[1]; - ResultTy = PointerType::get(getTypeByID(Record[0], true), - AddressSpace); + ResultTy = getTypeByID(Record[0]); + if (ResultTy == 0) return Error("invalid element type in pointer type"); + ResultTy = PointerType::get(ResultTy, AddressSpace); break; } case bitc::TYPE_CODE_FUNCTION: { @@ -573,76 +582,306 @@ bool BitcodeReader::ParseTypeTable() { // FUNCTION: [vararg, attrid, retty, paramty x N] if (Record.size() < 3) return Error("Invalid FUNCTION type record"); - std::vector ArgTys; - for (unsigned i = 3, e = Record.size(); i != e; ++i) - ArgTys.push_back(getTypeByID(Record[i], true)); + std::vector ArgTys; + for (unsigned i = 3, e = Record.size(); i != e; ++i) { + if (Type *T = getTypeByID(Record[i])) + ArgTys.push_back(T); + else + break; + } + + ResultTy = getTypeByID(Record[2]); + if (ResultTy == 0 || ArgTys.size() < Record.size()-3) + return Error("invalid type in function type"); - ResultTy = FunctionType::get(getTypeByID(Record[2], true), ArgTys, - Record[0]); + ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); break; } - case bitc::TYPE_CODE_STRUCT: { // STRUCT: [ispacked, eltty x N] + case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N] if (Record.size() < 1) return Error("Invalid STRUCT type record"); - std::vector EltTys; - for (unsigned i = 1, e = Record.size(); i != e; ++i) - EltTys.push_back(getTypeByID(Record[i], true)); + std::vector EltTys; + for (unsigned i = 1, e = Record.size(); i != e; ++i) { + if (Type *T = getTypeByID(Record[i])) + EltTys.push_back(T); + else + break; + } + if (EltTys.size() != Record.size()-1) + return Error("invalid type in struct type"); ResultTy = StructType::get(Context, EltTys, Record[0]); break; } - case bitc::TYPE_CODE_UNION: { // UNION: [eltty x N] - SmallVector EltTys; - for (unsigned i = 0, e = Record.size(); i != e; ++i) - EltTys.push_back(getTypeByID(Record[i], true)); - ResultTy = UnionType::get(&EltTys[0], EltTys.size()); + case bitc::TYPE_CODE_STRUCT_NAME: // STRUCT_NAME: [strchr x N] + if (ConvertToString(Record, 0, TypeName)) + return Error("Invalid STRUCT_NAME record"); + continue; + + case bitc::TYPE_CODE_STRUCT_NAMED: { // STRUCT: [ispacked, eltty x N] + if (Record.size() < 1) + return Error("Invalid STRUCT type record"); + + if (NumRecords >= TypeList.size()) + return Error("invalid TYPE table"); + + // Check to see if this was forward referenced, if so fill in the temp. + StructType *Res = cast_or_null(TypeList[NumRecords]); + if (Res) { + Res->setName(TypeName); + TypeList[NumRecords] = 0; + } else // Otherwise, create a new struct. + Res = StructType::createNamed(Context, TypeName); + TypeName.clear(); + + SmallVector EltTys; + for (unsigned i = 1, e = Record.size(); i != e; ++i) { + if (Type *T = getTypeByID(Record[i])) + EltTys.push_back(T); + else + break; + } + if (EltTys.size() != Record.size()-1) + return Error("invalid STRUCT type record"); + Res->setBody(EltTys, Record[0]); + ResultTy = Res; break; } + case bitc::TYPE_CODE_OPAQUE: { // OPAQUE: [] + if (Record.size() != 1) + return Error("Invalid OPAQUE type record"); + + if (NumRecords >= TypeList.size()) + return Error("invalid TYPE table"); + + // Check to see if this was forward referenced, if so fill in the temp. + StructType *Res = cast_or_null(TypeList[NumRecords]); + if (Res) { + Res->setName(TypeName); + TypeList[NumRecords] = 0; + } else // Otherwise, create a new struct with no body. + Res = StructType::createNamed(Context, TypeName); + TypeName.clear(); + ResultTy = Res; + break; + } case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty] if (Record.size() < 2) return Error("Invalid ARRAY type record"); - ResultTy = ArrayType::get(getTypeByID(Record[1], true), Record[0]); + if ((ResultTy = getTypeByID(Record[1]))) + ResultTy = ArrayType::get(ResultTy, Record[0]); + else + return Error("Invalid ARRAY type element"); break; case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty] if (Record.size() < 2) return Error("Invalid VECTOR type record"); - ResultTy = VectorType::get(getTypeByID(Record[1], true), Record[0]); + if ((ResultTy = getTypeByID(Record[1]))) + ResultTy = VectorType::get(ResultTy, Record[0]); + else + return Error("Invalid ARRAY type element"); break; } - if (NumRecords == TypeList.size()) { - // If this is a new type slot, just append it. - TypeList.push_back(ResultTy ? ResultTy : OpaqueType::get(Context)); - ++NumRecords; - } else if (ResultTy == 0) { - // Otherwise, this was forward referenced, so an opaque type was created, - // but the result type is actually just an opaque. Leave the one we - // created previously. - ++NumRecords; - } else { - // Otherwise, this was forward referenced, so an opaque type was created. - // Resolve the opaque type to the real type now. - assert(NumRecords < TypeList.size() && "Typelist imbalance"); - const OpaqueType *OldTy = cast(TypeList[NumRecords++].get()); - - // Don't directly push the new type on the Tab. Instead we want to replace - // the opaque type we previously inserted with the new concrete value. The - // refinement from the abstract (opaque) type to the new type causes all - // uses of the abstract type to use the concrete type (NewTy). This will - // also cause the opaque type to be deleted. - const_cast(OldTy)->refineAbstractTypeTo(ResultTy); - - // This should have replaced the old opaque type with the new type in the - // value table... or with a preexisting type that was already in the - // system. Let's just make sure it did. - assert(TypeList[NumRecords-1].get() != OldTy && - "refineAbstractType didn't work!"); + if (NumRecords >= TypeList.size()) + return Error("invalid TYPE table"); + assert(ResultTy && "Didn't read a type?"); + assert(TypeList[NumRecords] == 0 && "Already read type?"); + TypeList[NumRecords++] = ResultTy; + } +} + +// FIXME: Remove in LLVM 3.1 +bool BitcodeReader::ParseOldTypeTable() { + if (Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_OLD)) + return Error("Malformed block record"); + + if (!TypeList.empty()) + return Error("Multiple TYPE_BLOCKs found!"); + + + // While horrible, we have no good ordering of types in the bc file. Just + // iteratively parse types out of the bc file in multiple passes until we get + // them all. Do this by saving a cursor for the start of the type block. + BitstreamCursor StartOfTypeBlockCursor(Stream); + + unsigned NumTypesRead = 0; + + SmallVector Record; +RestartScan: + unsigned NextTypeID = 0; + bool ReadAnyTypes = false; + + // Read all the records for this type table. + while (1) { + unsigned Code = Stream.ReadCode(); + if (Code == bitc::END_BLOCK) { + if (NextTypeID != TypeList.size()) + return Error("Invalid type forward reference in TYPE_BLOCK_ID_OLD"); + + // If we haven't read all of the types yet, iterate again. + if (NumTypesRead != TypeList.size()) { + // If we didn't successfully read any types in this pass, then we must + // have an unhandled forward reference. + if (!ReadAnyTypes) + return Error("Obsolete bitcode contains unhandled recursive type"); + + Stream = StartOfTypeBlockCursor; + goto RestartScan; + } + + if (Stream.ReadBlockEnd()) + return Error("Error at end of type table block"); + return false; + } + + if (Code == bitc::ENTER_SUBBLOCK) { + // No known subblocks, always skip them. + Stream.ReadSubBlockID(); + if (Stream.SkipBlock()) + return Error("Malformed block record"); + continue; + } + + if (Code == bitc::DEFINE_ABBREV) { + Stream.ReadAbbrevRecord(); + continue; + } + + // Read a record. + Record.clear(); + Type *ResultTy = 0; + switch (Stream.ReadRecord(Code, Record)) { + default: return Error("unknown type in type table"); + case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries] + // TYPE_CODE_NUMENTRY contains a count of the number of types in the + // type list. This allows us to reserve space. + if (Record.size() < 1) + return Error("Invalid TYPE_CODE_NUMENTRY record"); + TypeList.resize(Record[0]); + continue; + case bitc::TYPE_CODE_VOID: // VOID + ResultTy = Type::getVoidTy(Context); + break; + case bitc::TYPE_CODE_FLOAT: // FLOAT + ResultTy = Type::getFloatTy(Context); + break; + case bitc::TYPE_CODE_DOUBLE: // DOUBLE + ResultTy = Type::getDoubleTy(Context); + break; + case bitc::TYPE_CODE_X86_FP80: // X86_FP80 + ResultTy = Type::getX86_FP80Ty(Context); + break; + case bitc::TYPE_CODE_FP128: // FP128 + ResultTy = Type::getFP128Ty(Context); + break; + case bitc::TYPE_CODE_PPC_FP128: // PPC_FP128 + ResultTy = Type::getPPC_FP128Ty(Context); + break; + case bitc::TYPE_CODE_LABEL: // LABEL + ResultTy = Type::getLabelTy(Context); + break; + case bitc::TYPE_CODE_METADATA: // METADATA + ResultTy = Type::getMetadataTy(Context); + break; + case bitc::TYPE_CODE_X86_MMX: // X86_MMX + ResultTy = Type::getX86_MMXTy(Context); + break; + case bitc::TYPE_CODE_INTEGER: // INTEGER: [width] + if (Record.size() < 1) + return Error("Invalid Integer type record"); + ResultTy = IntegerType::get(Context, Record[0]); + break; + case bitc::TYPE_CODE_OPAQUE: // OPAQUE + if (NextTypeID < TypeList.size() && TypeList[NextTypeID] == 0) + ResultTy = StructType::createNamed(Context, ""); + break; + case bitc::TYPE_CODE_STRUCT_OLD: {// STRUCT_OLD + if (NextTypeID >= TypeList.size()) break; + // If we already read it, don't reprocess. + if (TypeList[NextTypeID] && + !cast(TypeList[NextTypeID])->isOpaque()) + break; + + // Set a type. + if (TypeList[NextTypeID] == 0) + TypeList[NextTypeID] = StructType::createNamed(Context, ""); + + std::vector EltTys; + for (unsigned i = 1, e = Record.size(); i != e; ++i) { + if (Type *Elt = getTypeByIDOrNull(Record[i])) + EltTys.push_back(Elt); + else + break; + } + + if (EltTys.size() != Record.size()-1) + break; // Not all elements are ready. + + cast(TypeList[NextTypeID])->setBody(EltTys, Record[0]); + ResultTy = TypeList[NextTypeID]; + TypeList[NextTypeID] = 0; + break; + } + case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or + // [pointee type, address space] + if (Record.size() < 1) + return Error("Invalid POINTER type record"); + unsigned AddressSpace = 0; + if (Record.size() == 2) + AddressSpace = Record[1]; + if ((ResultTy = getTypeByIDOrNull(Record[0]))) + ResultTy = PointerType::get(ResultTy, AddressSpace); + break; + } + case bitc::TYPE_CODE_FUNCTION: { + // FIXME: attrid is dead, remove it in LLVM 3.0 + // FUNCTION: [vararg, attrid, retty, paramty x N] + if (Record.size() < 3) + return Error("Invalid FUNCTION type record"); + std::vector ArgTys; + for (unsigned i = 3, e = Record.size(); i != e; ++i) { + if (Type *Elt = getTypeByIDOrNull(Record[i])) + ArgTys.push_back(Elt); + else + break; + } + if (ArgTys.size()+3 != Record.size()) + break; // Something was null. + if ((ResultTy = getTypeByIDOrNull(Record[2]))) + ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); + break; + } + case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty] + if (Record.size() < 2) + return Error("Invalid ARRAY type record"); + if ((ResultTy = getTypeByIDOrNull(Record[1]))) + ResultTy = ArrayType::get(ResultTy, Record[0]); + break; + case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty] + if (Record.size() < 2) + return Error("Invalid VECTOR type record"); + if ((ResultTy = getTypeByIDOrNull(Record[1]))) + ResultTy = VectorType::get(ResultTy, Record[0]); + break; + } + + if (NextTypeID >= TypeList.size()) + return Error("invalid TYPE table"); + + if (ResultTy && TypeList[NextTypeID] == 0) { + ++NumTypesRead; + ReadAnyTypes = true; + + TypeList[NextTypeID] = ResultTy; } + + ++NextTypeID; } } -bool BitcodeReader::ParseTypeSymbolTable() { - if (Stream.EnterSubBlock(bitc::TYPE_SYMTAB_BLOCK_ID)) +bool BitcodeReader::ParseOldTypeSymbolTable() { + if (Stream.EnterSubBlock(bitc::TYPE_SYMTAB_BLOCK_ID_OLD)) return Error("Malformed block record"); SmallVector Record; @@ -682,7 +921,10 @@ bool BitcodeReader::ParseTypeSymbolTable() { if (TypeID >= TypeList.size()) return Error("Invalid Type ID in TST_ENTRY record"); - TheModule->addTypeName(TypeName, TypeList[TypeID].get()); + // Only apply the type name to a struct type with no name. + if (StructType *STy = dyn_cast(TypeList[TypeID])) + if (!STy->isAnonymous() && !STy->hasName()) + STy->setName(TypeName); TypeName.clear(); break; } @@ -782,7 +1024,8 @@ bool BitcodeReader::ParseMetadata() { bool IsFunctionLocal = false; // Read a record. Record.clear(); - switch (Stream.ReadRecord(Code, Record)) { + Code = Stream.ReadRecord(Code, Record); + switch (Code) { default: // Default behavior: ignore. break; case bitc::METADATA_NAME: { @@ -796,8 +1039,8 @@ bool BitcodeReader::ParseMetadata() { Code = Stream.ReadCode(); // METADATA_NAME is always followed by METADATA_NAMED_NODE. - if (Stream.ReadRecord(Code, Record) != bitc::METADATA_NAMED_NODE) - assert ( 0 && "Inavlid Named Metadata record"); + unsigned NextBitCode = Stream.ReadRecord(Code, Record); + assert(NextBitCode == bitc::METADATA_NAMED_NODE); (void)NextBitCode; // Read named metadata elements. unsigned Size = Record.size(); @@ -820,7 +1063,8 @@ bool BitcodeReader::ParseMetadata() { unsigned Size = Record.size(); SmallVector Elts; for (unsigned i = 0; i != Size; i += 2) { - const Type *Ty = getTypeByID(Record[i], false); + Type *Ty = getTypeByID(Record[i]); + if (!Ty) return Error("Invalid METADATA_NODE record"); if (Ty->isMetadataTy()) Elts.push_back(MDValueList.getValueFwdRef(Record[i+1])); else if (!Ty->isVoidTy()) @@ -828,9 +1072,7 @@ bool BitcodeReader::ParseMetadata() { else Elts.push_back(NULL); } - Value *V = MDNode::getWhenValsUnresolved(Context, - Elts.data(), Elts.size(), - IsFunctionLocal); + Value *V = MDNode::getWhenValsUnresolved(Context, Elts, IsFunctionLocal); IsFunctionLocal = false; MDValueList.AssignValue(V, NextMDValueNo++); break; @@ -921,7 +1163,7 @@ bool BitcodeReader::ParseConstants() { SmallVector Record; // Read all the records for this value table. - const Type *CurTy = Type::getInt32Ty(Context); + Type *CurTy = Type::getInt32Ty(Context); unsigned NextCstNo = ValueList.size(); while (1) { unsigned Code = Stream.ReadCode(); @@ -1008,23 +1250,18 @@ bool BitcodeReader::ParseConstants() { unsigned Size = Record.size(); std::vector Elts; - if (const StructType *STy = dyn_cast(CurTy)) { + if (StructType *STy = dyn_cast(CurTy)) { for (unsigned i = 0; i != Size; ++i) Elts.push_back(ValueList.getConstantFwdRef(Record[i], STy->getElementType(i))); V = ConstantStruct::get(STy, Elts); - } else if (const UnionType *UnTy = dyn_cast(CurTy)) { - uint64_t Index = Record[0]; - Constant *Val = ValueList.getConstantFwdRef(Record[1], - UnTy->getElementType(Index)); - V = ConstantUnion::get(UnTy, Val); - } else if (const ArrayType *ATy = dyn_cast(CurTy)) { - const Type *EltTy = ATy->getElementType(); + } else if (ArrayType *ATy = dyn_cast(CurTy)) { + Type *EltTy = ATy->getElementType(); for (unsigned i = 0; i != Size; ++i) Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); V = ConstantArray::get(ATy, Elts); - } else if (const VectorType *VTy = dyn_cast(CurTy)) { - const Type *EltTy = VTy->getElementType(); + } else if (VectorType *VTy = dyn_cast(CurTy)) { + Type *EltTy = VTy->getElementType(); for (unsigned i = 0; i != Size; ++i) Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); V = ConstantVector::get(Elts); @@ -1037,8 +1274,8 @@ bool BitcodeReader::ParseConstants() { if (Record.empty()) return Error("Invalid CST_AGGREGATE record"); - const ArrayType *ATy = cast(CurTy); - const Type *EltTy = ATy->getElementType(); + ArrayType *ATy = cast(CurTy); + Type *EltTy = ATy->getElementType(); unsigned Size = Record.size(); std::vector Elts; @@ -1051,8 +1288,8 @@ bool BitcodeReader::ParseConstants() { if (Record.empty()) return Error("Invalid CST_AGGREGATE record"); - const ArrayType *ATy = cast(CurTy); - const Type *EltTy = ATy->getElementType(); + ArrayType *ATy = cast(CurTy); + Type *EltTy = ATy->getElementType(); unsigned Size = Record.size(); std::vector Elts; @@ -1074,13 +1311,17 @@ bool BitcodeReader::ParseConstants() { if (Record.size() >= 4) { if (Opc == Instruction::Add || Opc == Instruction::Sub || - Opc == Instruction::Mul) { + Opc == Instruction::Mul || + Opc == Instruction::Shl) { if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP)) Flags |= OverflowingBinaryOperator::NoSignedWrap; if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) Flags |= OverflowingBinaryOperator::NoUnsignedWrap; - } else if (Opc == Instruction::SDiv) { - if (Record[3] & (1 << bitc::SDIV_EXACT)) + } else if (Opc == Instruction::SDiv || + Opc == Instruction::UDiv || + Opc == Instruction::LShr || + Opc == Instruction::AShr) { + if (Record[3] & (1 << bitc::PEO_EXACT)) Flags |= SDivOperator::IsExact; } } @@ -1094,7 +1335,7 @@ bool BitcodeReader::ParseConstants() { if (Opc < 0) { V = UndefValue::get(CurTy); // Unknown cast. } else { - const Type *OpTy = getTypeByID(Record[1]); + Type *OpTy = getTypeByID(Record[1]); if (!OpTy) return Error("Invalid CE_CAST record"); Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy); V = ConstantExpr::getCast(Opc, Op, CurTy); @@ -1106,7 +1347,7 @@ bool BitcodeReader::ParseConstants() { if (Record.size() & 1) return Error("Invalid CE_GEP record"); SmallVector Elts; for (unsigned i = 0, e = Record.size(); i != e; i += 2) { - const Type *ElTy = getTypeByID(Record[i]); + Type *ElTy = getTypeByID(Record[i]); if (!ElTy) return Error("Invalid CE_GEP record"); Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], ElTy)); } @@ -1127,7 +1368,7 @@ bool BitcodeReader::ParseConstants() { break; case bitc::CST_CODE_CE_EXTRACTELT: { // CE_EXTRACTELT: [opty, opval, opval] if (Record.size() < 3) return Error("Invalid CE_EXTRACTELT record"); - const VectorType *OpTy = + VectorType *OpTy = dyn_cast_or_null(getTypeByID(Record[0])); if (OpTy == 0) return Error("Invalid CE_EXTRACTELT record"); Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); @@ -1136,7 +1377,7 @@ bool BitcodeReader::ParseConstants() { break; } case bitc::CST_CODE_CE_INSERTELT: { // CE_INSERTELT: [opval, opval, opval] - const VectorType *OpTy = dyn_cast(CurTy); + VectorType *OpTy = dyn_cast(CurTy); if (Record.size() < 3 || OpTy == 0) return Error("Invalid CE_INSERTELT record"); Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy); @@ -1147,25 +1388,26 @@ bool BitcodeReader::ParseConstants() { break; } case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval] - const VectorType *OpTy = dyn_cast(CurTy); + VectorType *OpTy = dyn_cast(CurTy); if (Record.size() < 3 || OpTy == 0) return Error("Invalid CE_SHUFFLEVEC record"); Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy); Constant *Op1 = ValueList.getConstantFwdRef(Record[1], OpTy); - const Type *ShufTy = VectorType::get(Type::getInt32Ty(Context), + Type *ShufTy = VectorType::get(Type::getInt32Ty(Context), OpTy->getNumElements()); Constant *Op2 = ValueList.getConstantFwdRef(Record[2], ShufTy); V = ConstantExpr::getShuffleVector(Op0, Op1, Op2); break; } case bitc::CST_CODE_CE_SHUFVEC_EX: { // [opty, opval, opval, opval] - const VectorType *RTy = dyn_cast(CurTy); - const VectorType *OpTy = dyn_cast(getTypeByID(Record[0])); + VectorType *RTy = dyn_cast(CurTy); + VectorType *OpTy = + dyn_cast_or_null(getTypeByID(Record[0])); if (Record.size() < 4 || RTy == 0 || OpTy == 0) return Error("Invalid CE_SHUFVEC_EX record"); Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy); - const Type *ShufTy = VectorType::get(Type::getInt32Ty(Context), + Type *ShufTy = VectorType::get(Type::getInt32Ty(Context), RTy->getNumElements()); Constant *Op2 = ValueList.getConstantFwdRef(Record[3], ShufTy); V = ConstantExpr::getShuffleVector(Op0, Op1, Op2); @@ -1173,7 +1415,7 @@ bool BitcodeReader::ParseConstants() { } case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred] if (Record.size() < 4) return Error("Invalid CE_CMP record"); - const Type *OpTy = getTypeByID(Record[0]); + Type *OpTy = getTypeByID(Record[0]); if (OpTy == 0) return Error("Invalid CE_CMP record"); Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy); @@ -1200,14 +1442,14 @@ bool BitcodeReader::ParseConstants() { AsmStr += (char)Record[2+i]; for (unsigned i = 0; i != ConstStrSize; ++i) ConstrStr += (char)Record[3+AsmStrSize+i]; - const PointerType *PTy = cast(CurTy); + PointerType *PTy = cast(CurTy); V = InlineAsm::get(cast(PTy->getElementType()), AsmStr, ConstrStr, HasSideEffects, IsAlignStack); break; } case bitc::CST_CODE_BLOCKADDRESS:{ if (Record.size() < 3) return Error("Invalid CE_BLOCKADDRESS record"); - const Type *FnTy = getTypeByID(Record[0]); + Type *FnTy = getTypeByID(Record[0]); if (FnTy == 0) return Error("Invalid CE_BLOCKADDRESS record"); Function *Fn = dyn_cast_or_null(ValueList.getConstantFwdRef(Record[1],FnTy)); @@ -1290,6 +1532,12 @@ bool BitcodeReader::ParseModule() { UpgradedIntrinsics.push_back(std::make_pair(FI, NewFn)); } + // Look for global variables which need to be renamed. + for (Module::global_iterator + GI = TheModule->global_begin(), GE = TheModule->global_end(); + GI != GE; ++GI) + UpgradeGlobalVariable(GI); + // Force deallocation of memory for these vectors to favor the client that // want lazy deserialization. std::vector >().swap(GlobalInits); @@ -1312,12 +1560,16 @@ bool BitcodeReader::ParseModule() { if (ParseAttributeBlock()) return true; break; - case bitc::TYPE_BLOCK_ID: + case bitc::TYPE_BLOCK_ID_NEW: if (ParseTypeTable()) return true; break; - case bitc::TYPE_SYMTAB_BLOCK_ID: - if (ParseTypeSymbolTable()) + case bitc::TYPE_BLOCK_ID_OLD: + if (ParseOldTypeTable()) + return true; + break; + case bitc::TYPE_SYMTAB_BLOCK_ID_OLD: + if (ParseOldTypeSymbolTable()) return true; break; case bitc::VALUE_SYMTAB_BLOCK_ID: @@ -1405,11 +1657,13 @@ bool BitcodeReader::ParseModule() { break; } // GLOBALVAR: [pointer type, isconst, initid, - // linkage, alignment, section, visibility, threadlocal] + // linkage, alignment, section, visibility, threadlocal, + // unnamed_addr] case bitc::MODULE_CODE_GLOBALVAR: { if (Record.size() < 6) return Error("Invalid MODULE_CODE_GLOBALVAR record"); - const Type *Ty = getTypeByID(Record[0]); + Type *Ty = getTypeByID(Record[0]); + if (!Ty) return Error("Invalid MODULE_CODE_GLOBALVAR record"); if (!Ty->isPointerTy()) return Error("Global not a pointer type!"); unsigned AddressSpace = cast(Ty)->getAddressSpace(); @@ -1431,6 +1685,10 @@ bool BitcodeReader::ParseModule() { if (Record.size() > 7) isThreadLocal = Record[7]; + bool UnnamedAddr = false; + if (Record.size() > 8) + UnnamedAddr = Record[8]; + GlobalVariable *NewGV = new GlobalVariable(*TheModule, Ty, isConstant, Linkage, 0, "", 0, isThreadLocal, AddressSpace); @@ -1439,6 +1697,7 @@ bool BitcodeReader::ParseModule() { NewGV->setSection(Section); NewGV->setVisibility(Visibility); NewGV->setThreadLocal(isThreadLocal); + NewGV->setUnnamedAddr(UnnamedAddr); ValueList.push_back(NewGV); @@ -1448,14 +1707,15 @@ bool BitcodeReader::ParseModule() { break; } // FUNCTION: [type, callingconv, isproto, linkage, paramattr, - // alignment, section, visibility, gc] + // alignment, section, visibility, gc, unnamed_addr] case bitc::MODULE_CODE_FUNCTION: { if (Record.size() < 8) return Error("Invalid MODULE_CODE_FUNCTION record"); - const Type *Ty = getTypeByID(Record[0]); + Type *Ty = getTypeByID(Record[0]); + if (!Ty) return Error("Invalid MODULE_CODE_FUNCTION record"); if (!Ty->isPointerTy()) return Error("Function not a pointer type!"); - const FunctionType *FTy = + FunctionType *FTy = dyn_cast(cast(Ty)->getElementType()); if (!FTy) return Error("Function not a pointer to function type!"); @@ -1480,6 +1740,10 @@ bool BitcodeReader::ParseModule() { return Error("Invalid GC ID"); Func->setGC(GCTable[Record[8]-1].c_str()); } + bool UnnamedAddr = false; + if (Record.size() > 9) + UnnamedAddr = Record[9]; + Func->setUnnamedAddr(UnnamedAddr); ValueList.push_back(Func); // If this is a function with a body, remember the prototype we are @@ -1493,7 +1757,8 @@ bool BitcodeReader::ParseModule() { case bitc::MODULE_CODE_ALIAS: { if (Record.size() < 3) return Error("Invalid MODULE_ALIAS record"); - const Type *Ty = getTypeByID(Record[0]); + Type *Ty = getTypeByID(Record[0]); + if (!Ty) return Error("Invalid MODULE_ALIAS record"); if (!Ty->isPointerTy()) return Error("Function not a pointer type!"); @@ -1556,8 +1821,18 @@ bool BitcodeReader::ParseBitcodeInto(Module *M) { while (!Stream.AtEndOfStream()) { unsigned Code = Stream.ReadCode(); - if (Code != bitc::ENTER_SUBBLOCK) + if (Code != bitc::ENTER_SUBBLOCK) { + + // The ranlib in xcode 4 will align archive members by appending newlines to the + // end of them. If this file size is a multiple of 4 but not 8, we have to read and + // ignore these final 4 bytes :-( + if (Stream.GetAbbrevIDWidth() == 2 && Code == 2 && + Stream.Read(6) == 2 && Stream.Read(24) == 0xa0a0a && + Stream.AtEndOfStream()) + return false; + return Error("Invalid record at top-level"); + } unsigned BlockID = Stream.ReadSubBlockID(); @@ -1585,6 +1860,112 @@ bool BitcodeReader::ParseBitcodeInto(Module *M) { return false; } +bool BitcodeReader::ParseModuleTriple(std::string &Triple) { + if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) + return Error("Malformed block record"); + + SmallVector Record; + + // Read all the records for this module. + while (!Stream.AtEndOfStream()) { + unsigned Code = Stream.ReadCode(); + if (Code == bitc::END_BLOCK) { + if (Stream.ReadBlockEnd()) + return Error("Error at end of module block"); + + return false; + } + + if (Code == bitc::ENTER_SUBBLOCK) { + switch (Stream.ReadSubBlockID()) { + default: // Skip unknown content. + if (Stream.SkipBlock()) + return Error("Malformed block record"); + break; + } + continue; + } + + if (Code == bitc::DEFINE_ABBREV) { + Stream.ReadAbbrevRecord(); + continue; + } + + // Read a record. + switch (Stream.ReadRecord(Code, Record)) { + default: break; // Default behavior, ignore unknown content. + case bitc::MODULE_CODE_VERSION: // VERSION: [version#] + if (Record.size() < 1) + return Error("Malformed MODULE_CODE_VERSION"); + // Only version #0 is supported so far. + if (Record[0] != 0) + return Error("Unknown bitstream version!"); + break; + case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] + std::string S; + if (ConvertToString(Record, 0, S)) + return Error("Invalid MODULE_CODE_TRIPLE record"); + Triple = S; + break; + } + } + Record.clear(); + } + + return Error("Premature end of bitstream"); +} + +bool BitcodeReader::ParseTriple(std::string &Triple) { + if (Buffer->getBufferSize() & 3) + return Error("Bitcode stream should be a multiple of 4 bytes in length"); + + unsigned char *BufPtr = (unsigned char *)Buffer->getBufferStart(); + unsigned char *BufEnd = BufPtr+Buffer->getBufferSize(); + + // 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)) + return Error("Invalid bitcode wrapper header"); + + StreamFile.init(BufPtr, BufEnd); + Stream.init(StreamFile); + + // Sniff for the signature. + if (Stream.Read(8) != 'B' || + Stream.Read(8) != 'C' || + Stream.Read(4) != 0x0 || + Stream.Read(4) != 0xC || + Stream.Read(4) != 0xE || + Stream.Read(4) != 0xD) + return Error("Invalid bitcode signature"); + + // We expect a number of well-defined blocks, though we don't necessarily + // need to understand them all. + while (!Stream.AtEndOfStream()) { + unsigned Code = Stream.ReadCode(); + + if (Code != bitc::ENTER_SUBBLOCK) + return Error("Invalid record at top-level"); + + unsigned BlockID = Stream.ReadSubBlockID(); + + // We only know the MODULE subblock ID. + switch (BlockID) { + case bitc::MODULE_BLOCK_ID: + if (ParseModuleTriple(Triple)) + return true; + break; + default: + if (Stream.SkipBlock()) + return Error("Malformed block record"); + break; + } + } + + return false; +} + /// ParseMetadataAttachment - Parse metadata attachments. bool BitcodeReader::ParseMetadataAttachment() { if (Stream.EnterSubBlock(bitc::METADATA_ATTACHMENT_ID)) @@ -1635,6 +2016,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { InstructionList.clear(); unsigned ModuleValueListSize = ValueList.size(); + unsigned ModuleMDValueListSize = MDValueList.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) @@ -1700,7 +2082,6 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { FunctionBBs[i] = BasicBlock::Create(Context, "", F); CurBB = FunctionBBs[0]; continue; - case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: // DEBUG_LOC_AGAIN // This record indicates that the last instruction is at the same @@ -1756,13 +2137,17 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { if (OpNum < Record.size()) { if (Opc == Instruction::Add || Opc == Instruction::Sub || - Opc == Instruction::Mul) { + Opc == Instruction::Mul || + Opc == Instruction::Shl) { if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP)) cast(I)->setHasNoSignedWrap(true); if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) cast(I)->setHasNoUnsignedWrap(true); - } else if (Opc == Instruction::SDiv) { - if (Record[OpNum] & (1 << bitc::SDIV_EXACT)) + } else if (Opc == Instruction::SDiv || + Opc == Instruction::UDiv || + Opc == Instruction::LShr || + Opc == Instruction::AShr) { + if (Record[OpNum] & (1 << bitc::PEO_EXACT)) cast(I)->setIsExact(true); } } @@ -1775,7 +2160,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { OpNum+2 != Record.size()) return Error("Invalid CAST record"); - const Type *ResTy = getTypeByID(Record[OpNum]); + Type *ResTy = getTypeByID(Record[OpNum]); int Opc = GetDecodedCastOpcode(Record[OpNum+1]); if (Opc == -1 || ResTy == 0) return Error("Invalid CAST record"); @@ -1821,8 +2206,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { EXTRACTVALIdx.push_back((unsigned)Index); } - I = ExtractValueInst::Create(Agg, - EXTRACTVALIdx.begin(), EXTRACTVALIdx.end()); + I = ExtractValueInst::Create(Agg, EXTRACTVALIdx); InstructionList.push_back(I); break; } @@ -1846,8 +2230,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { INSERTVALIdx.push_back((unsigned)Index); } - I = InsertValueInst::Create(Agg, Val, - INSERTVALIdx.begin(), INSERTVALIdx.end()); + I = InsertValueInst::Create(Agg, Val, INSERTVALIdx); InstructionList.push_back(I); break; } @@ -1878,8 +2261,8 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { return Error("Invalid SELECT record"); // select condition can be either i1 or [N x i1] - if (const VectorType* vector_type = - dyn_cast(Cond->getType())) { + if (VectorType* vector_type = + dyn_cast(Cond->getType())) { // expect if (vector_type->getElementType() != Type::getInt1Ty(Context)) return Error("Invalid SELECT condition type"); @@ -1954,18 +2337,6 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { break; } - case bitc::FUNC_CODE_INST_GETRESULT: { // GETRESULT: [ty, val, n] - if (Record.size() != 2) - return Error("Invalid GETRESULT record"); - unsigned OpNum = 0; - Value *Op; - getValueTypePair(Record, OpNum, NextValueNo, Op); - unsigned Index = Record[1]; - I = ExtractValueInst::Create(Op, Index); - InstructionList.push_back(I); - break; - } - case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval] { unsigned Size = Record.size(); @@ -1976,32 +2347,13 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { } unsigned OpNum = 0; - SmallVector Vs; - do { - Value *Op = NULL; - if (getValueTypePair(Record, OpNum, NextValueNo, Op)) - return Error("Invalid RET record"); - Vs.push_back(Op); - } while(OpNum != Record.size()); - - const Type *ReturnType = F->getReturnType(); - if (Vs.size() > 1 || - (ReturnType->isStructTy() && - (Vs.empty() || Vs[0]->getType() != ReturnType))) { - Value *RV = UndefValue::get(ReturnType); - for (unsigned i = 0, e = Vs.size(); i != e; ++i) { - I = InsertValueInst::Create(RV, Vs[i], i, "mrv"); - InstructionList.push_back(I); - CurBB->getInstList().push_back(I); - ValueList.AssignValue(I, NextValueNo++); - RV = I; - } - I = ReturnInst::Create(Context, RV); - InstructionList.push_back(I); - break; - } + Value *Op = NULL; + if (getValueTypePair(Record, OpNum, NextValueNo, Op)) + return Error("Invalid RET record"); + if (OpNum != Record.size()) + return Error("Invalid RET record"); - I = ReturnInst::Create(Context, Vs[0]); + I = ReturnInst::Create(Context, Op); InstructionList.push_back(I); break; } @@ -2029,7 +2381,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...] if (Record.size() < 3 || (Record.size() & 1) == 0) return Error("Invalid SWITCH record"); - const Type *OpTy = getTypeByID(Record[0]); + Type *OpTy = getTypeByID(Record[0]); Value *Cond = getFnValueByID(Record[1], OpTy); BasicBlock *Default = getBasicBlock(Record[2]); if (OpTy == 0 || Cond == 0 || Default == 0) @@ -2053,7 +2405,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...] if (Record.size() < 2) return Error("Invalid INDIRECTBR record"); - const Type *OpTy = getTypeByID(Record[0]); + Type *OpTy = getTypeByID(Record[0]); Value *Address = getFnValueByID(Record[1], OpTy); if (OpTy == 0 || Address == 0) return Error("Invalid INDIRECTBR record"); @@ -2085,8 +2437,8 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { if (getValueTypePair(Record, OpNum, NextValueNo, Callee)) return Error("Invalid INVOKE record"); - const PointerType *CalleeTy = dyn_cast(Callee->getType()); - const FunctionType *FTy = !CalleeTy ? 0 : + PointerType *CalleeTy = dyn_cast(Callee->getType()); + FunctionType *FTy = !CalleeTy ? 0 : dyn_cast(CalleeTy->getElementType()); // Check that the right number of fixed parameters are here. @@ -2113,8 +2465,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { } } - I = InvokeInst::Create(Callee, NormalBB, UnwindBB, - Ops.begin(), Ops.end()); + I = InvokeInst::Create(Callee, NormalBB, UnwindBB, Ops); InstructionList.push_back(I); cast(I)->setCallingConv( static_cast(CCInfo)); @@ -2132,12 +2483,11 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...] if (Record.size() < 1 || ((Record.size()-1)&1)) return Error("Invalid PHI record"); - const Type *Ty = getTypeByID(Record[0]); + Type *Ty = getTypeByID(Record[0]); if (!Ty) return Error("Invalid PHI record"); - PHINode *PN = PHINode::Create(Ty); + PHINode *PN = PHINode::Create(Ty, (Record.size()-1)/2); InstructionList.push_back(PN); - PN->reserveOperandSpace((Record.size()-1)/2); for (unsigned i = 0, e = Record.size()-1; i != e; i += 2) { Value *V = getFnValueByID(Record[1+i], Ty); @@ -2149,47 +2499,14 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { break; } - case bitc::FUNC_CODE_INST_MALLOC: { // MALLOC: [instty, op, align] - // Autoupgrade malloc instruction to malloc call. - // FIXME: Remove in LLVM 3.0. - if (Record.size() < 3) - return Error("Invalid MALLOC record"); - const PointerType *Ty = - dyn_cast_or_null(getTypeByID(Record[0])); - Value *Size = getFnValueByID(Record[1], Type::getInt32Ty(Context)); - if (!Ty || !Size) return Error("Invalid MALLOC record"); - if (!CurBB) return Error("Invalid malloc instruction with no BB"); - const Type *Int32Ty = IntegerType::getInt32Ty(CurBB->getContext()); - Constant *AllocSize = ConstantExpr::getSizeOf(Ty->getElementType()); - AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, Int32Ty); - I = CallInst::CreateMalloc(CurBB, Int32Ty, Ty->getElementType(), - AllocSize, Size, NULL); - InstructionList.push_back(I); - break; - } - case bitc::FUNC_CODE_INST_FREE: { // FREE: [op, opty] - unsigned OpNum = 0; - Value *Op; - if (getValueTypePair(Record, OpNum, NextValueNo, Op) || - OpNum != Record.size()) - return Error("Invalid FREE record"); - if (!CurBB) return Error("Invalid free instruction with no BB"); - I = CallInst::CreateFree(Op, CurBB); - InstructionList.push_back(I); - break; - } case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align] - // For backward compatibility, tolerate a lack of an opty, and use i32. - // LLVM 3.0: Remove this. - if (Record.size() < 3 || Record.size() > 4) + if (Record.size() != 4) return Error("Invalid ALLOCA record"); - unsigned OpNum = 0; - const PointerType *Ty = - dyn_cast_or_null(getTypeByID(Record[OpNum++])); - const Type *OpTy = Record.size() == 4 ? getTypeByID(Record[OpNum++]) : - Type::getInt32Ty(Context); - Value *Size = getFnValueByID(Record[OpNum++], OpTy); - unsigned Align = Record[OpNum++]; + PointerType *Ty = + dyn_cast_or_null(getTypeByID(Record[0])); + Type *OpTy = getTypeByID(Record[1]); + Value *Size = getFnValueByID(Record[2], OpTy); + unsigned Align = Record[3]; if (!Ty || !Size) return Error("Invalid ALLOCA record"); I = new AllocaInst(Ty->getElementType(), Size, (1 << Align) >> 1); InstructionList.push_back(I); @@ -2206,7 +2523,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { InstructionList.push_back(I); break; } - case bitc::FUNC_CODE_INST_STORE2: { // STORE2:[ptrty, ptr, val, align, vol] + case bitc::FUNC_CODE_INST_STORE: { // STORE2:[ptrty, ptr, val, align, vol] unsigned OpNum = 0; Value *Val, *Ptr; if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) || @@ -2219,20 +2536,6 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { InstructionList.push_back(I); break; } - case bitc::FUNC_CODE_INST_STORE: { // STORE:[val, valty, ptr, align, vol] - // FIXME: Legacy form of store instruction. Should be removed in LLVM 3.0. - unsigned OpNum = 0; - Value *Val, *Ptr; - if (getValueTypePair(Record, OpNum, NextValueNo, Val) || - getValue(Record, OpNum, - PointerType::getUnqual(Val->getType()), Ptr)|| - OpNum+2 != Record.size()) - return Error("Invalid STORE record"); - - I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1); - InstructionList.push_back(I); - break; - } case bitc::FUNC_CODE_INST_CALL: { // CALL: [paramattrs, cc, fnty, fnid, arg0, arg1...] if (Record.size() < 3) @@ -2246,8 +2549,8 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { if (getValueTypePair(Record, OpNum, NextValueNo, Callee)) return Error("Invalid CALL record"); - const PointerType *OpTy = dyn_cast(Callee->getType()); - const FunctionType *FTy = 0; + PointerType *OpTy = dyn_cast(Callee->getType()); + FunctionType *FTy = 0; if (OpTy) FTy = dyn_cast(OpTy->getElementType()); if (!FTy || Record.size() < FTy->getNumParams()+OpNum) return Error("Invalid CALL record"); @@ -2255,7 +2558,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { SmallVector Args; // Read the fixed params. for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { - if (FTy->getParamType(i)->getTypeID()==Type::LabelTyID) + if (FTy->getParamType(i)->isLabelTy()) Args.push_back(getBasicBlock(Record[OpNum])); else Args.push_back(getFnValueByID(Record[OpNum], FTy->getParamType(i))); @@ -2275,7 +2578,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { } } - I = CallInst::Create(Callee, Args.begin(), Args.end()); + I = CallInst::Create(Callee, Args); InstructionList.push_back(I); cast(I)->setCallingConv( static_cast(CCInfo>>1)); @@ -2286,9 +2589,9 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty] if (Record.size() < 3) return Error("Invalid VAARG record"); - const Type *OpTy = getTypeByID(Record[0]); + Type *OpTy = getTypeByID(Record[0]); Value *Op = getFnValueByID(Record[1], OpTy); - const Type *ResTy = getTypeByID(Record[2]); + Type *ResTy = getTypeByID(Record[2]); if (!OpTy || !Op || !ResTy) return Error("Invalid VAARG record"); I = new VAArgInst(Op, ResTy); @@ -2321,7 +2624,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { if (A->getParent() == 0) { // We found at least one unresolved value. Nuke them all to avoid leaks. for (unsigned i = ModuleValueListSize, e = ValueList.size(); i != e; ++i){ - if ((A = dyn_cast(ValueList.back())) && A->getParent() == 0) { + if ((A = dyn_cast(ValueList[i])) && A->getParent() == 0) { A->replaceAllUsesWith(UndefValue::get(A->getType())); delete A; } @@ -2330,6 +2633,9 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { } } + // FIXME: Check for unresolved forward-declared metadata references + // and clean up leaks. + // See if anything took the address of blocks in this function. If so, // resolve them now. DenseMap >::iterator BAFRI = @@ -2351,8 +2657,8 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { // Trim the value list down to the size it was before we parsed this function. ValueList.shrinkTo(ModuleValueListSize); + MDValueList.shrinkTo(ModuleMDValueListSize); std::vector().swap(FunctionBBs); - return false; } @@ -2495,7 +2801,24 @@ Module *llvm::ParseBitcodeFile(MemoryBuffer *Buffer, LLVMContext& Context, // Read in the entire module, and destroy the BitcodeReader. if (M->MaterializeAllPermanently(ErrMsg)) { delete M; - return NULL; + return 0; } + return M; } + +std::string llvm::getBitcodeTargetTriple(MemoryBuffer *Buffer, + LLVMContext& Context, + std::string *ErrMsg) { + BitcodeReader *R = new BitcodeReader(Buffer, Context); + // Don't let the BitcodeReader dtor delete 'Buffer'. + R->setBufferOwned(false); + + std::string Triple(""); + if (R->ParseTriple(Triple)) + if (ErrMsg) + *ErrMsg = R->getErrorString(); + + delete R; + return Triple; +}