Add bitcode reader 3.0 to libbcinfo.
Since LLVM 3.1 remove some auto upgrade code, the old bitcode
will become bitcode incompatible. So we have to add the
bitcode reader 3.0 to libbcinfo.
Change-Id: I3ac1a1132c361cb9251c0a4ac9782c8cc62df7ea
diff --git a/bcinfo/BitReader_3_0/BitReader.cpp b/bcinfo/BitReader_3_0/BitReader.cpp
new file mode 100644
index 0000000..15844c0
--- /dev/null
+++ b/bcinfo/BitReader_3_0/BitReader.cpp
@@ -0,0 +1,88 @@
+//===-- BitReader.cpp -----------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/BitReader.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include <string>
+#include <cstring>
+
+using namespace llvm;
+
+/* Builds a module from the bitcode in the specified memory buffer, returning a
+ reference to the module via the OutModule parameter. Returns 0 on success.
+ Optionally returns a human-readable error message via OutMessage. */
+LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
+ LLVMModuleRef *OutModule, char **OutMessage) {
+ return LLVMParseBitcodeInContext(wrap(&getGlobalContext()), MemBuf, OutModule,
+ OutMessage);
+}
+
+LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
+ LLVMMemoryBufferRef MemBuf,
+ LLVMModuleRef *OutModule,
+ char **OutMessage) {
+ std::string Message;
+
+ *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef),
+ &Message));
+ if (!*OutModule) {
+ if (OutMessage)
+ *OutMessage = strdup(Message.c_str());
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Reads a module from the specified path, returning via the OutModule parameter
+ a module provider which performs lazy deserialization. Returns 0 on success.
+ Optionally returns a human-readable error message via OutMessage. */
+LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
+ LLVMMemoryBufferRef MemBuf,
+ LLVMModuleRef *OutM,
+ char **OutMessage) {
+ std::string Message;
+
+ *OutM = wrap(getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef),
+ &Message));
+ if (!*OutM) {
+ if (OutMessage)
+ *OutMessage = strdup(Message.c_str());
+ return 1;
+ }
+
+ return 0;
+
+}
+
+LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
+ char **OutMessage) {
+ return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
+ OutMessage);
+}
+
+/* Deprecated: Use LLVMGetBitcodeModuleInContext instead. */
+LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
+ LLVMMemoryBufferRef MemBuf,
+ LLVMModuleProviderRef *OutMP,
+ char **OutMessage) {
+ return LLVMGetBitcodeModuleInContext(ContextRef, MemBuf,
+ reinterpret_cast<LLVMModuleRef*>(OutMP),
+ OutMessage);
+}
+
+/* Deprecated: Use LLVMGetBitcodeModule instead. */
+LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
+ LLVMModuleProviderRef *OutMP,
+ char **OutMessage) {
+ return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf,
+ OutMP, OutMessage);
+}
diff --git a/bcinfo/BitReader_3_0/BitcodeReader.cpp b/bcinfo/BitReader_3_0/BitcodeReader.cpp
new file mode 100644
index 0000000..6ecdbae
--- /dev/null
+++ b/bcinfo/BitReader_3_0/BitcodeReader.cpp
@@ -0,0 +1,3046 @@
+//===- BitcodeReader.cpp - Internal BitcodeReader implementation ----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header defines the BitcodeReader class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "BitcodeReader.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/InlineAsm.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/Module.h"
+#include "llvm/Operator.h"
+#include "llvm/AutoUpgrade.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/OperandTraits.h"
+using namespace llvm;
+
+void BitcodeReader::FreeState() {
+ if (BufferOwned)
+ delete Buffer;
+ Buffer = 0;
+ std::vector<Type*>().swap(TypeList);
+ ValueList.clear();
+ MDValueList.clear();
+
+ std::vector<AttrListPtr>().swap(MAttributes);
+ std::vector<BasicBlock*>().swap(FunctionBBs);
+ std::vector<Function*>().swap(FunctionsWithBodies);
+ DeferredFunctionInfo.clear();
+ MDKindMap.clear();
+}
+
+//===----------------------------------------------------------------------===//
+// Helper functions to implement forward reference resolution, etc.
+//===----------------------------------------------------------------------===//
+
+/// ConvertToString - Convert a string from a record into an std::string, return
+/// true on failure.
+template<typename StrTy>
+static bool ConvertToString(SmallVector<uint64_t, 64> &Record, unsigned Idx,
+ StrTy &Result) {
+ if (Idx > Record.size())
+ return true;
+
+ for (unsigned i = Idx, e = Record.size(); i != e; ++i)
+ Result += (char)Record[i];
+ return false;
+}
+
+static GlobalValue::LinkageTypes GetDecodedLinkage(unsigned Val) {
+ switch (Val) {
+ default: // Map unknown/new linkages to external
+ case 0: return GlobalValue::ExternalLinkage;
+ case 1: return GlobalValue::WeakAnyLinkage;
+ case 2: return GlobalValue::AppendingLinkage;
+ case 3: return GlobalValue::InternalLinkage;
+ case 4: return GlobalValue::LinkOnceAnyLinkage;
+ case 5: return GlobalValue::DLLImportLinkage;
+ case 6: return GlobalValue::DLLExportLinkage;
+ case 7: return GlobalValue::ExternalWeakLinkage;
+ case 8: return GlobalValue::CommonLinkage;
+ case 9: return GlobalValue::PrivateLinkage;
+ case 10: return GlobalValue::WeakODRLinkage;
+ case 11: return GlobalValue::LinkOnceODRLinkage;
+ case 12: return GlobalValue::AvailableExternallyLinkage;
+ case 13: return GlobalValue::LinkerPrivateLinkage;
+ case 14: return GlobalValue::LinkerPrivateWeakLinkage;
+ case 15: return GlobalValue::LinkerPrivateWeakDefAutoLinkage;
+ }
+}
+
+static GlobalValue::VisibilityTypes GetDecodedVisibility(unsigned Val) {
+ switch (Val) {
+ default: // Map unknown visibilities to default.
+ case 0: return GlobalValue::DefaultVisibility;
+ case 1: return GlobalValue::HiddenVisibility;
+ case 2: return GlobalValue::ProtectedVisibility;
+ }
+}
+
+static int GetDecodedCastOpcode(unsigned Val) {
+ switch (Val) {
+ default: return -1;
+ case bitc::CAST_TRUNC : return Instruction::Trunc;
+ case bitc::CAST_ZEXT : return Instruction::ZExt;
+ case bitc::CAST_SEXT : return Instruction::SExt;
+ case bitc::CAST_FPTOUI : return Instruction::FPToUI;
+ case bitc::CAST_FPTOSI : return Instruction::FPToSI;
+ case bitc::CAST_UITOFP : return Instruction::UIToFP;
+ case bitc::CAST_SITOFP : return Instruction::SIToFP;
+ case bitc::CAST_FPTRUNC : return Instruction::FPTrunc;
+ case bitc::CAST_FPEXT : return Instruction::FPExt;
+ case bitc::CAST_PTRTOINT: return Instruction::PtrToInt;
+ case bitc::CAST_INTTOPTR: return Instruction::IntToPtr;
+ case bitc::CAST_BITCAST : return Instruction::BitCast;
+ }
+}
+static int GetDecodedBinaryOpcode(unsigned Val, Type *Ty) {
+ switch (Val) {
+ default: return -1;
+ case bitc::BINOP_ADD:
+ return Ty->isFPOrFPVectorTy() ? Instruction::FAdd : Instruction::Add;
+ case bitc::BINOP_SUB:
+ return Ty->isFPOrFPVectorTy() ? Instruction::FSub : Instruction::Sub;
+ case bitc::BINOP_MUL:
+ return Ty->isFPOrFPVectorTy() ? Instruction::FMul : Instruction::Mul;
+ case bitc::BINOP_UDIV: return Instruction::UDiv;
+ case bitc::BINOP_SDIV:
+ return Ty->isFPOrFPVectorTy() ? Instruction::FDiv : Instruction::SDiv;
+ case bitc::BINOP_UREM: return Instruction::URem;
+ case bitc::BINOP_SREM:
+ return Ty->isFPOrFPVectorTy() ? Instruction::FRem : Instruction::SRem;
+ case bitc::BINOP_SHL: return Instruction::Shl;
+ case bitc::BINOP_LSHR: return Instruction::LShr;
+ case bitc::BINOP_ASHR: return Instruction::AShr;
+ case bitc::BINOP_AND: return Instruction::And;
+ case bitc::BINOP_OR: return Instruction::Or;
+ case bitc::BINOP_XOR: return Instruction::Xor;
+ }
+}
+
+static AtomicRMWInst::BinOp GetDecodedRMWOperation(unsigned Val) {
+ switch (Val) {
+ default: return AtomicRMWInst::BAD_BINOP;
+ case bitc::RMW_XCHG: return AtomicRMWInst::Xchg;
+ case bitc::RMW_ADD: return AtomicRMWInst::Add;
+ case bitc::RMW_SUB: return AtomicRMWInst::Sub;
+ case bitc::RMW_AND: return AtomicRMWInst::And;
+ case bitc::RMW_NAND: return AtomicRMWInst::Nand;
+ case bitc::RMW_OR: return AtomicRMWInst::Or;
+ case bitc::RMW_XOR: return AtomicRMWInst::Xor;
+ case bitc::RMW_MAX: return AtomicRMWInst::Max;
+ case bitc::RMW_MIN: return AtomicRMWInst::Min;
+ case bitc::RMW_UMAX: return AtomicRMWInst::UMax;
+ case bitc::RMW_UMIN: return AtomicRMWInst::UMin;
+ }
+}
+
+static AtomicOrdering GetDecodedOrdering(unsigned Val) {
+ switch (Val) {
+ case bitc::ORDERING_NOTATOMIC: return NotAtomic;
+ case bitc::ORDERING_UNORDERED: return Unordered;
+ case bitc::ORDERING_MONOTONIC: return Monotonic;
+ case bitc::ORDERING_ACQUIRE: return Acquire;
+ case bitc::ORDERING_RELEASE: return Release;
+ case bitc::ORDERING_ACQREL: return AcquireRelease;
+ default: // Map unknown orderings to sequentially-consistent.
+ case bitc::ORDERING_SEQCST: return SequentiallyConsistent;
+ }
+}
+
+static SynchronizationScope GetDecodedSynchScope(unsigned Val) {
+ switch (Val) {
+ case bitc::SYNCHSCOPE_SINGLETHREAD: return SingleThread;
+ default: // Map unknown scopes to cross-thread.
+ case bitc::SYNCHSCOPE_CROSSTHREAD: return CrossThread;
+ }
+}
+
+namespace llvm {
+namespace {
+ /// @brief A class for maintaining the slot number definition
+ /// as a placeholder for the actual definition for forward constants defs.
+ class ConstantPlaceHolder : public ConstantExpr {
+ void operator=(const ConstantPlaceHolder &); // DO NOT IMPLEMENT
+ public:
+ // allocate space for exactly one operand
+ void *operator new(size_t s) {
+ return User::operator new(s, 1);
+ }
+ explicit ConstantPlaceHolder(Type *Ty, LLVMContext& Context)
+ : ConstantExpr(Ty, Instruction::UserOp1, &Op<0>(), 1) {
+ Op<0>() = UndefValue::get(Type::getInt32Ty(Context));
+ }
+
+ /// @brief Methods to support type inquiry through isa, cast, and dyn_cast.
+ //static inline bool classof(const ConstantPlaceHolder *) { return true; }
+ static bool classof(const Value *V) {
+ return isa<ConstantExpr>(V) &&
+ cast<ConstantExpr>(V)->getOpcode() == Instruction::UserOp1;
+ }
+
+
+ /// Provide fast operand accessors
+ //DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+ };
+}
+
+// FIXME: can we inherit this from ConstantExpr?
+template <>
+struct OperandTraits<ConstantPlaceHolder> :
+ public FixedNumOperandTraits<ConstantPlaceHolder, 1> {
+};
+}
+
+
+void BitcodeReaderValueList::AssignValue(Value *V, unsigned Idx) {
+ if (Idx == size()) {
+ push_back(V);
+ return;
+ }
+
+ if (Idx >= size())
+ resize(Idx+1);
+
+ WeakVH &OldV = ValuePtrs[Idx];
+ if (OldV == 0) {
+ OldV = V;
+ return;
+ }
+
+ // Handle constants and non-constants (e.g. instrs) differently for
+ // efficiency.
+ if (Constant *PHC = dyn_cast<Constant>(&*OldV)) {
+ ResolveConstants.push_back(std::make_pair(PHC, Idx));
+ OldV = V;
+ } else {
+ // If there was a forward reference to this value, replace it.
+ Value *PrevVal = OldV;
+ OldV->replaceAllUsesWith(V);
+ delete PrevVal;
+ }
+}
+
+
+Constant *BitcodeReaderValueList::getConstantFwdRef(unsigned Idx,
+ Type *Ty) {
+ if (Idx >= size())
+ resize(Idx + 1);
+
+ if (Value *V = ValuePtrs[Idx]) {
+ assert(Ty == V->getType() && "Type mismatch in constant table!");
+ return cast<Constant>(V);
+ }
+
+ // Create and return a placeholder, which will later be RAUW'd.
+ Constant *C = new ConstantPlaceHolder(Ty, Context);
+ ValuePtrs[Idx] = C;
+ return C;
+}
+
+Value *BitcodeReaderValueList::getValueFwdRef(unsigned Idx, Type *Ty) {
+ if (Idx >= size())
+ resize(Idx + 1);
+
+ if (Value *V = ValuePtrs[Idx]) {
+ assert((Ty == 0 || Ty == V->getType()) && "Type mismatch in value table!");
+ return V;
+ }
+
+ // No type specified, must be invalid reference.
+ if (Ty == 0) return 0;
+
+ // Create and return a placeholder, which will later be RAUW'd.
+ Value *V = new Argument(Ty);
+ ValuePtrs[Idx] = V;
+ return V;
+}
+
+/// ResolveConstantForwardRefs - Once all constants are read, this method bulk
+/// resolves any forward references. The idea behind this is that we sometimes
+/// get constants (such as large arrays) which reference *many* forward ref
+/// constants. Replacing each of these causes a lot of thrashing when
+/// building/reuniquing the constant. Instead of doing this, we look at all the
+/// uses and rewrite all the place holders at once for any constant that uses
+/// a placeholder.
+void BitcodeReaderValueList::ResolveConstantForwardRefs() {
+ // Sort the values by-pointer so that they are efficient to look up with a
+ // binary search.
+ std::sort(ResolveConstants.begin(), ResolveConstants.end());
+
+ SmallVector<Constant*, 64> NewOps;
+
+ while (!ResolveConstants.empty()) {
+ Value *RealVal = operator[](ResolveConstants.back().second);
+ Constant *Placeholder = ResolveConstants.back().first;
+ ResolveConstants.pop_back();
+
+ // Loop over all users of the placeholder, updating them to reference the
+ // new value. If they reference more than one placeholder, update them all
+ // at once.
+ while (!Placeholder->use_empty()) {
+ Value::use_iterator UI = Placeholder->use_begin();
+ User *U = *UI;
+
+ // If the using object isn't uniqued, just update the operands. This
+ // handles instructions and initializers for global variables.
+ if (!isa<Constant>(U) || isa<GlobalValue>(U)) {
+ UI.getUse().set(RealVal);
+ continue;
+ }
+
+ // Otherwise, we have a constant that uses the placeholder. Replace that
+ // constant with a new constant that has *all* placeholder uses updated.
+ Constant *UserC = cast<Constant>(U);
+ for (User::op_iterator I = UserC->op_begin(), E = UserC->op_end();
+ I != E; ++I) {
+ Value *NewOp;
+ if (!isa<ConstantPlaceHolder>(*I)) {
+ // Not a placeholder reference.
+ NewOp = *I;
+ } else if (*I == Placeholder) {
+ // Common case is that it just references this one placeholder.
+ NewOp = RealVal;
+ } else {
+ // Otherwise, look up the placeholder in ResolveConstants.
+ ResolveConstantsTy::iterator It =
+ std::lower_bound(ResolveConstants.begin(), ResolveConstants.end(),
+ std::pair<Constant*, unsigned>(cast<Constant>(*I),
+ 0));
+ assert(It != ResolveConstants.end() && It->first == *I);
+ NewOp = operator[](It->second);
+ }
+
+ NewOps.push_back(cast<Constant>(NewOp));
+ }
+
+ // Make the new constant.
+ Constant *NewC;
+ if (ConstantArray *UserCA = dyn_cast<ConstantArray>(UserC)) {
+ NewC = ConstantArray::get(UserCA->getType(), NewOps);
+ } else if (ConstantStruct *UserCS = dyn_cast<ConstantStruct>(UserC)) {
+ NewC = ConstantStruct::get(UserCS->getType(), NewOps);
+ } else if (isa<ConstantVector>(UserC)) {
+ NewC = ConstantVector::get(NewOps);
+ } else {
+ assert(isa<ConstantExpr>(UserC) && "Must be a ConstantExpr.");
+ NewC = cast<ConstantExpr>(UserC)->getWithOperands(NewOps);
+ }
+
+ UserC->replaceAllUsesWith(NewC);
+ UserC->destroyConstant();
+ NewOps.clear();
+ }
+
+ // Update all ValueHandles, they should be the only users at this point.
+ Placeholder->replaceAllUsesWith(RealVal);
+ delete Placeholder;
+ }
+}
+
+void BitcodeReaderMDValueList::AssignValue(Value *V, unsigned Idx) {
+ if (Idx == size()) {
+ push_back(V);
+ return;
+ }
+
+ if (Idx >= size())
+ resize(Idx+1);
+
+ WeakVH &OldV = MDValuePtrs[Idx];
+ if (OldV == 0) {
+ OldV = V;
+ return;
+ }
+
+ // If there was a forward reference to this value, replace it.
+ MDNode *PrevVal = cast<MDNode>(OldV);
+ OldV->replaceAllUsesWith(V);
+ MDNode::deleteTemporary(PrevVal);
+ // Deleting PrevVal sets Idx value in MDValuePtrs to null. Set new
+ // value for Idx.
+ MDValuePtrs[Idx] = V;
+}
+
+Value *BitcodeReaderMDValueList::getValueFwdRef(unsigned Idx) {
+ if (Idx >= size())
+ resize(Idx + 1);
+
+ if (Value *V = MDValuePtrs[Idx]) {
+ assert(V->getType()->isMetadataTy() && "Type mismatch in value table!");
+ return V;
+ }
+
+ // Create and return a placeholder, which will later be RAUW'd.
+ Value *V = MDNode::getTemporary(Context, ArrayRef<Value*>());
+ MDValuePtrs[Idx] = V;
+ return V;
+}
+
+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::create(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
+//===----------------------------------------------------------------------===//
+
+bool BitcodeReader::ParseAttributeBlock() {
+ if (Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID))
+ return Error("Malformed block record");
+
+ if (!MAttributes.empty())
+ return Error("Multiple PARAMATTR blocks found!");
+
+ SmallVector<uint64_t, 64> Record;
+
+ SmallVector<AttributeWithIndex, 8> Attrs;
+
+ // Read all the records.
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of PARAMATTR 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();
+ switch (Stream.ReadRecord(Code, Record)) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::PARAMATTR_CODE_ENTRY: { // ENTRY: [paramidx0, attr0, ...]
+ if (Record.size() & 1)
+ return Error("Invalid ENTRY record");
+
+ // FIXME : Remove this autoupgrade code in LLVM 3.0.
+ // If Function attributes are using index 0 then transfer them
+ // to index ~0. Index 0 is used for return value attributes but used to be
+ // used for function attributes.
+ Attributes RetAttribute = Attribute::None;
+ Attributes FnAttribute = Attribute::None;
+ for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
+ // FIXME: remove in LLVM 3.0
+ // The alignment is stored as a 16-bit raw value from bits 31--16.
+ // We shift the bits above 31 down by 11 bits.
+
+ unsigned Alignment = (Record[i+1] & (0xffffull << 16)) >> 16;
+ if (Alignment && !isPowerOf2_32(Alignment))
+ return Error("Alignment is not a power of two.");
+
+ Attributes ReconstitutedAttr = Record[i+1] & 0xffff;
+ if (Alignment)
+ ReconstitutedAttr |= Attribute::constructAlignmentFromInt(Alignment);
+ ReconstitutedAttr |= (Record[i+1] & (0xffffull << 32)) >> 11;
+ Record[i+1] = ReconstitutedAttr;
+
+ if (Record[i] == 0)
+ RetAttribute = Record[i+1];
+ else if (Record[i] == ~0U)
+ FnAttribute = Record[i+1];
+ }
+
+ unsigned OldRetAttrs = (Attribute::NoUnwind|Attribute::NoReturn|
+ Attribute::ReadOnly|Attribute::ReadNone);
+
+ if (FnAttribute == Attribute::None && RetAttribute != Attribute::None &&
+ (RetAttribute & OldRetAttrs) != 0) {
+ if (FnAttribute == Attribute::None) { // add a slot so they get added.
+ Record.push_back(~0U);
+ Record.push_back(0);
+ }
+
+ FnAttribute |= RetAttribute & OldRetAttrs;
+ RetAttribute &= ~OldRetAttrs;
+ }
+
+ for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
+ if (Record[i] == 0) {
+ if (RetAttribute != Attribute::None)
+ Attrs.push_back(AttributeWithIndex::get(0, RetAttribute));
+ } else if (Record[i] == ~0U) {
+ if (FnAttribute != Attribute::None)
+ Attrs.push_back(AttributeWithIndex::get(~0U, FnAttribute));
+ } else if (Record[i+1] != Attribute::None)
+ Attrs.push_back(AttributeWithIndex::get(Record[i], Record[i+1]));
+ }
+
+ MAttributes.push_back(AttrListPtr::get(Attrs.begin(), Attrs.end()));
+ Attrs.clear();
+ break;
+ }
+ }
+ }
+}
+
+bool BitcodeReader::ParseTypeTable() {
+ 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<uint64_t, 64> Record;
+ unsigned NumRecords = 0;
+
+ SmallString<64> TypeName;
+
+ // Read all the records for this type table.
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (NumRecords != TypeList.size())
+ return Error("Invalid type forward reference in TYPE_BLOCK");
+ 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_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];
+ 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_OLD: {
+ // 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<Type*> 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(ResultTy, ArgTys, Record[0]);
+ break;
+ }
+ case bitc::TYPE_CODE_FUNCTION: {
+ // FUNCTION: [vararg, retty, paramty x N]
+ if (Record.size() < 2)
+ return Error("Invalid FUNCTION type record");
+ std::vector<Type*> ArgTys;
+ for (unsigned i = 2, e = Record.size(); i != e; ++i) {
+ if (Type *T = getTypeByID(Record[i]))
+ ArgTys.push_back(T);
+ else
+ break;
+ }
+
+ ResultTy = getTypeByID(Record[1]);
+ if (ResultTy == 0 || ArgTys.size() < Record.size()-2)
+ return Error("invalid type in function type");
+
+ ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]);
+ break;
+ }
+ case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N]
+ if (Record.size() < 1)
+ return Error("Invalid STRUCT type record");
+ std::vector<Type*> 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_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<StructType>(TypeList[NumRecords]);
+ if (Res) {
+ Res->setName(TypeName);
+ TypeList[NumRecords] = 0;
+ } else // Otherwise, create a new struct.
+ Res = StructType::create(Context, TypeName);
+ TypeName.clear();
+
+ SmallVector<Type*, 8> 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<StructType>(TypeList[NumRecords]);
+ if (Res) {
+ Res->setName(TypeName);
+ TypeList[NumRecords] = 0;
+ } else // Otherwise, create a new struct with no body.
+ Res = StructType::create(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");
+ 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");
+ if ((ResultTy = getTypeByID(Record[1])))
+ ResultTy = VectorType::get(ResultTy, Record[0]);
+ else
+ return Error("Invalid ARRAY type element");
+ break;
+ }
+
+ 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<uint64_t, 64> 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::create(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<StructType>(TypeList[NextTypeID])->isOpaque())
+ break;
+
+ // Set a type.
+ if (TypeList[NextTypeID] == 0)
+ TypeList[NextTypeID] = StructType::create(Context);
+
+ std::vector<Type*> 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<StructType>(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_OLD: {
+ // 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<Type*> 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_FUNCTION: {
+ // FUNCTION: [vararg, retty, paramty x N]
+ if (Record.size() < 2)
+ return Error("Invalid FUNCTION type record");
+ std::vector<Type*> ArgTys;
+ for (unsigned i = 2, e = Record.size(); i != e; ++i) {
+ if (Type *Elt = getTypeByIDOrNull(Record[i]))
+ ArgTys.push_back(Elt);
+ else
+ break;
+ }
+ if (ArgTys.size()+2 != Record.size())
+ break; // Something was null.
+ if ((ResultTy = getTypeByIDOrNull(Record[1])))
+ 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::ParseOldTypeSymbolTable() {
+ if (Stream.EnterSubBlock(bitc::TYPE_SYMTAB_BLOCK_ID_OLD))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records for this type table.
+ std::string TypeName;
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of type symbol 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();
+ switch (Stream.ReadRecord(Code, Record)) {
+ default: // Default behavior: unknown type.
+ break;
+ case bitc::TST_CODE_ENTRY: // TST_ENTRY: [typeid, namechar x N]
+ if (ConvertToString(Record, 1, TypeName))
+ return Error("Invalid TST_ENTRY record");
+ unsigned TypeID = Record[0];
+ if (TypeID >= TypeList.size())
+ return Error("Invalid Type ID in TST_ENTRY record");
+
+ // Only apply the type name to a struct type with no name.
+ if (StructType *STy = dyn_cast<StructType>(TypeList[TypeID]))
+ if (!STy->isLiteral() && !STy->hasName())
+ STy->setName(TypeName);
+ TypeName.clear();
+ break;
+ }
+ }
+}
+
+bool BitcodeReader::ParseValueSymbolTable() {
+ if (Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records for this value table.
+ SmallString<128> ValueName;
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of value symbol 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();
+ switch (Stream.ReadRecord(Code, Record)) {
+ default: // Default behavior: unknown type.
+ break;
+ case bitc::VST_CODE_ENTRY: { // VST_ENTRY: [valueid, namechar x N]
+ if (ConvertToString(Record, 1, ValueName))
+ return Error("Invalid VST_ENTRY record");
+ unsigned ValueID = Record[0];
+ if (ValueID >= ValueList.size())
+ return Error("Invalid Value ID in VST_ENTRY record");
+ Value *V = ValueList[ValueID];
+
+ V->setName(StringRef(ValueName.data(), ValueName.size()));
+ ValueName.clear();
+ break;
+ }
+ case bitc::VST_CODE_BBENTRY: {
+ if (ConvertToString(Record, 1, ValueName))
+ return Error("Invalid VST_BBENTRY record");
+ BasicBlock *BB = getBasicBlock(Record[0]);
+ if (BB == 0)
+ return Error("Invalid BB ID in VST_BBENTRY record");
+
+ BB->setName(StringRef(ValueName.data(), ValueName.size()));
+ ValueName.clear();
+ break;
+ }
+ }
+ }
+}
+
+bool BitcodeReader::ParseMetadata() {
+ unsigned NextMDValueNo = MDValueList.size();
+
+ if (Stream.EnterSubBlock(bitc::METADATA_BLOCK_ID))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records.
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of PARAMATTR 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;
+ }
+
+ bool IsFunctionLocal = false;
+ // Read a record.
+ Record.clear();
+ Code = Stream.ReadRecord(Code, Record);
+ switch (Code) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::METADATA_NAME: {
+ // Read named of the named metadata.
+ unsigned NameLength = Record.size();
+ SmallString<8> Name;
+ Name.resize(NameLength);
+ for (unsigned i = 0; i != NameLength; ++i)
+ Name[i] = Record[i];
+ Record.clear();
+ Code = Stream.ReadCode();
+
+ // METADATA_NAME is always followed by METADATA_NAMED_NODE.
+ unsigned NextBitCode = Stream.ReadRecord(Code, Record);
+ assert(NextBitCode == bitc::METADATA_NAMED_NODE); (void)NextBitCode;
+
+ // Read named metadata elements.
+ unsigned Size = Record.size();
+ NamedMDNode *NMD = TheModule->getOrInsertNamedMetadata(Name);
+ for (unsigned i = 0; i != Size; ++i) {
+ MDNode *MD = dyn_cast<MDNode>(MDValueList.getValueFwdRef(Record[i]));
+ if (MD == 0)
+ return Error("Malformed metadata record");
+ NMD->addOperand(MD);
+ }
+ break;
+ }
+ case bitc::METADATA_FN_NODE:
+ IsFunctionLocal = true;
+ // fall-through
+ case bitc::METADATA_NODE: {
+ if (Record.size() % 2 == 1)
+ return Error("Invalid METADATA_NODE record");
+
+ unsigned Size = Record.size();
+ SmallVector<Value*, 8> Elts;
+ for (unsigned i = 0; i != Size; i += 2) {
+ 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())
+ Elts.push_back(ValueList.getValueFwdRef(Record[i+1], Ty));
+ else
+ Elts.push_back(NULL);
+ }
+ Value *V = MDNode::getWhenValsUnresolved(Context, Elts, IsFunctionLocal);
+ IsFunctionLocal = false;
+ MDValueList.AssignValue(V, NextMDValueNo++);
+ break;
+ }
+ case bitc::METADATA_STRING: {
+ unsigned MDStringLength = Record.size();
+ SmallString<8> String;
+ String.resize(MDStringLength);
+ for (unsigned i = 0; i != MDStringLength; ++i)
+ String[i] = Record[i];
+ Value *V = MDString::get(Context,
+ StringRef(String.data(), String.size()));
+ MDValueList.AssignValue(V, NextMDValueNo++);
+ break;
+ }
+ case bitc::METADATA_KIND: {
+ unsigned RecordLength = Record.size();
+ if (Record.empty() || RecordLength < 2)
+ return Error("Invalid METADATA_KIND record");
+ SmallString<8> Name;
+ Name.resize(RecordLength-1);
+ unsigned Kind = Record[0];
+ for (unsigned i = 1; i != RecordLength; ++i)
+ Name[i-1] = Record[i];
+
+ unsigned NewKind = TheModule->getMDKindID(Name.str());
+ if (!MDKindMap.insert(std::make_pair(Kind, NewKind)).second)
+ return Error("Conflicting METADATA_KIND records");
+ break;
+ }
+ }
+ }
+}
+
+/// DecodeSignRotatedValue - Decode a signed value stored with the sign bit in
+/// the LSB for dense VBR encoding.
+static uint64_t DecodeSignRotatedValue(uint64_t V) {
+ if ((V & 1) == 0)
+ return V >> 1;
+ if (V != 1)
+ return -(V >> 1);
+ // There is no such thing as -0 with integers. "-0" really means MININT.
+ return 1ULL << 63;
+}
+
+/// ResolveGlobalAndAliasInits - Resolve all of the initializers for global
+/// values and aliases that we can.
+bool BitcodeReader::ResolveGlobalAndAliasInits() {
+ std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInitWorklist;
+ std::vector<std::pair<GlobalAlias*, unsigned> > AliasInitWorklist;
+
+ GlobalInitWorklist.swap(GlobalInits);
+ AliasInitWorklist.swap(AliasInits);
+
+ while (!GlobalInitWorklist.empty()) {
+ unsigned ValID = GlobalInitWorklist.back().second;
+ if (ValID >= ValueList.size()) {
+ // Not ready to resolve this yet, it requires something later in the file.
+ GlobalInits.push_back(GlobalInitWorklist.back());
+ } else {
+ if (Constant *C = dyn_cast<Constant>(ValueList[ValID]))
+ GlobalInitWorklist.back().first->setInitializer(C);
+ else
+ return Error("Global variable initializer is not a constant!");
+ }
+ GlobalInitWorklist.pop_back();
+ }
+
+ while (!AliasInitWorklist.empty()) {
+ unsigned ValID = AliasInitWorklist.back().second;
+ if (ValID >= ValueList.size()) {
+ AliasInits.push_back(AliasInitWorklist.back());
+ } else {
+ if (Constant *C = dyn_cast<Constant>(ValueList[ValID]))
+ AliasInitWorklist.back().first->setAliasee(C);
+ else
+ return Error("Alias initializer is not a constant!");
+ }
+ AliasInitWorklist.pop_back();
+ }
+ return false;
+}
+
+bool BitcodeReader::ParseConstants() {
+ if (Stream.EnterSubBlock(bitc::CONSTANTS_BLOCK_ID))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records for this value table.
+ Type *CurTy = Type::getInt32Ty(Context);
+ unsigned NextCstNo = ValueList.size();
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK)
+ break;
+
+ 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();
+ Value *V = 0;
+ unsigned BitCode = Stream.ReadRecord(Code, Record);
+ switch (BitCode) {
+ default: // Default behavior: unknown constant
+ case bitc::CST_CODE_UNDEF: // UNDEF
+ V = UndefValue::get(CurTy);
+ break;
+ case bitc::CST_CODE_SETTYPE: // SETTYPE: [typeid]
+ if (Record.empty())
+ return Error("Malformed CST_SETTYPE record");
+ if (Record[0] >= TypeList.size())
+ return Error("Invalid Type ID in CST_SETTYPE record");
+ CurTy = TypeList[Record[0]];
+ continue; // Skip the ValueList manipulation.
+ case bitc::CST_CODE_NULL: // NULL
+ V = Constant::getNullValue(CurTy);
+ break;
+ case bitc::CST_CODE_INTEGER: // INTEGER: [intval]
+ if (!CurTy->isIntegerTy() || Record.empty())
+ return Error("Invalid CST_INTEGER record");
+ V = ConstantInt::get(CurTy, DecodeSignRotatedValue(Record[0]));
+ break;
+ case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval]
+ if (!CurTy->isIntegerTy() || Record.empty())
+ return Error("Invalid WIDE_INTEGER record");
+
+ unsigned NumWords = Record.size();
+ SmallVector<uint64_t, 8> Words;
+ Words.resize(NumWords);
+ for (unsigned i = 0; i != NumWords; ++i)
+ Words[i] = DecodeSignRotatedValue(Record[i]);
+ V = ConstantInt::get(Context,
+ APInt(cast<IntegerType>(CurTy)->getBitWidth(),
+ Words));
+ break;
+ }
+ case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval]
+ if (Record.empty())
+ return Error("Invalid FLOAT record");
+ if (CurTy->isFloatTy())
+ V = ConstantFP::get(Context, APFloat(APInt(32, (uint32_t)Record[0])));
+ else if (CurTy->isDoubleTy())
+ V = ConstantFP::get(Context, APFloat(APInt(64, Record[0])));
+ else if (CurTy->isX86_FP80Ty()) {
+ // Bits are not stored the same way as a normal i80 APInt, compensate.
+ uint64_t Rearrange[2];
+ Rearrange[0] = (Record[1] & 0xffffLL) | (Record[0] << 16);
+ Rearrange[1] = Record[0] >> 48;
+ V = ConstantFP::get(Context, APFloat(APInt(80, Rearrange)));
+ } else if (CurTy->isFP128Ty())
+ V = ConstantFP::get(Context, APFloat(APInt(128, Record), true));
+ else if (CurTy->isPPC_FP128Ty())
+ V = ConstantFP::get(Context, APFloat(APInt(128, Record)));
+ else
+ V = UndefValue::get(CurTy);
+ break;
+ }
+
+ case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number]
+ if (Record.empty())
+ return Error("Invalid CST_AGGREGATE record");
+
+ unsigned Size = Record.size();
+ std::vector<Constant*> Elts;
+
+ if (StructType *STy = dyn_cast<StructType>(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 (ArrayType *ATy = dyn_cast<ArrayType>(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 (VectorType *VTy = dyn_cast<VectorType>(CurTy)) {
+ Type *EltTy = VTy->getElementType();
+ for (unsigned i = 0; i != Size; ++i)
+ Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy));
+ V = ConstantVector::get(Elts);
+ } else {
+ V = UndefValue::get(CurTy);
+ }
+ break;
+ }
+ case bitc::CST_CODE_STRING: { // STRING: [values]
+ if (Record.empty())
+ return Error("Invalid CST_AGGREGATE record");
+
+ ArrayType *ATy = cast<ArrayType>(CurTy);
+ Type *EltTy = ATy->getElementType();
+
+ unsigned Size = Record.size();
+ std::vector<Constant*> Elts;
+ for (unsigned i = 0; i != Size; ++i)
+ Elts.push_back(ConstantInt::get(EltTy, Record[i]));
+ V = ConstantArray::get(ATy, Elts);
+ break;
+ }
+ case bitc::CST_CODE_CSTRING: { // CSTRING: [values]
+ if (Record.empty())
+ return Error("Invalid CST_AGGREGATE record");
+
+ ArrayType *ATy = cast<ArrayType>(CurTy);
+ Type *EltTy = ATy->getElementType();
+
+ unsigned Size = Record.size();
+ std::vector<Constant*> Elts;
+ for (unsigned i = 0; i != Size; ++i)
+ Elts.push_back(ConstantInt::get(EltTy, Record[i]));
+ Elts.push_back(Constant::getNullValue(EltTy));
+ V = ConstantArray::get(ATy, Elts);
+ break;
+ }
+ case bitc::CST_CODE_CE_BINOP: { // CE_BINOP: [opcode, opval, opval]
+ if (Record.size() < 3) return Error("Invalid CE_BINOP record");
+ int Opc = GetDecodedBinaryOpcode(Record[0], CurTy);
+ if (Opc < 0) {
+ V = UndefValue::get(CurTy); // Unknown binop.
+ } else {
+ Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy);
+ Constant *RHS = ValueList.getConstantFwdRef(Record[2], CurTy);
+ unsigned Flags = 0;
+ if (Record.size() >= 4) {
+ if (Opc == Instruction::Add ||
+ Opc == Instruction::Sub ||
+ 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 ||
+ Opc == Instruction::UDiv ||
+ Opc == Instruction::LShr ||
+ Opc == Instruction::AShr) {
+ if (Record[3] & (1 << bitc::PEO_EXACT))
+ Flags |= SDivOperator::IsExact;
+ }
+ }
+ V = ConstantExpr::get(Opc, LHS, RHS, Flags);
+ }
+ break;
+ }
+ case bitc::CST_CODE_CE_CAST: { // CE_CAST: [opcode, opty, opval]
+ if (Record.size() < 3) return Error("Invalid CE_CAST record");
+ int Opc = GetDecodedCastOpcode(Record[0]);
+ if (Opc < 0) {
+ V = UndefValue::get(CurTy); // Unknown cast.
+ } else {
+ Type *OpTy = getTypeByID(Record[1]);
+ if (!OpTy) return Error("Invalid CE_CAST record");
+ Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy);
+ V = ConstantExpr::getCast(Opc, Op, CurTy);
+ }
+ break;
+ }
+ case bitc::CST_CODE_CE_INBOUNDS_GEP:
+ case bitc::CST_CODE_CE_GEP: { // CE_GEP: [n x operands]
+ if (Record.size() & 1) return Error("Invalid CE_GEP record");
+ SmallVector<Constant*, 16> Elts;
+ for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
+ Type *ElTy = getTypeByID(Record[i]);
+ if (!ElTy) return Error("Invalid CE_GEP record");
+ Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], ElTy));
+ }
+ ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
+ V = ConstantExpr::getGetElementPtr(Elts[0], Indices,
+ BitCode ==
+ bitc::CST_CODE_CE_INBOUNDS_GEP);
+ break;
+ }
+ case bitc::CST_CODE_CE_SELECT: // CE_SELECT: [opval#, opval#, opval#]
+ if (Record.size() < 3) return Error("Invalid CE_SELECT record");
+ V = ConstantExpr::getSelect(ValueList.getConstantFwdRef(Record[0],
+ Type::getInt1Ty(Context)),
+ ValueList.getConstantFwdRef(Record[1],CurTy),
+ ValueList.getConstantFwdRef(Record[2],CurTy));
+ break;
+ case bitc::CST_CODE_CE_EXTRACTELT: { // CE_EXTRACTELT: [opty, opval, opval]
+ if (Record.size() < 3) return Error("Invalid CE_EXTRACTELT record");
+ VectorType *OpTy =
+ dyn_cast_or_null<VectorType>(getTypeByID(Record[0]));
+ if (OpTy == 0) return Error("Invalid CE_EXTRACTELT record");
+ Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy);
+ Constant *Op1 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context));
+ V = ConstantExpr::getExtractElement(Op0, Op1);
+ break;
+ }
+ case bitc::CST_CODE_CE_INSERTELT: { // CE_INSERTELT: [opval, opval, opval]
+ VectorType *OpTy = dyn_cast<VectorType>(CurTy);
+ if (Record.size() < 3 || OpTy == 0)
+ return Error("Invalid CE_INSERTELT record");
+ Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy);
+ Constant *Op1 = ValueList.getConstantFwdRef(Record[1],
+ OpTy->getElementType());
+ Constant *Op2 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context));
+ V = ConstantExpr::getInsertElement(Op0, Op1, Op2);
+ break;
+ }
+ case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval]
+ VectorType *OpTy = dyn_cast<VectorType>(CurTy);
+ if (Record.size() < 3 || OpTy == 0)
+ return Error("Invalid CE_SHUFFLEVEC record");
+ Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy);
+ Constant *Op1 = ValueList.getConstantFwdRef(Record[1], OpTy);
+ 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]
+ VectorType *RTy = dyn_cast<VectorType>(CurTy);
+ VectorType *OpTy =
+ dyn_cast_or_null<VectorType>(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);
+ Type *ShufTy = VectorType::get(Type::getInt32Ty(Context),
+ RTy->getNumElements());
+ Constant *Op2 = ValueList.getConstantFwdRef(Record[3], ShufTy);
+ V = ConstantExpr::getShuffleVector(Op0, Op1, Op2);
+ break;
+ }
+ case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred]
+ if (Record.size() < 4) return Error("Invalid CE_CMP record");
+ 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);
+
+ if (OpTy->isFPOrFPVectorTy())
+ V = ConstantExpr::getFCmp(Record[3], Op0, Op1);
+ else
+ V = ConstantExpr::getICmp(Record[3], Op0, Op1);
+ break;
+ }
+ case bitc::CST_CODE_INLINEASM: {
+ if (Record.size() < 2) return Error("Invalid INLINEASM record");
+ std::string AsmStr, ConstrStr;
+ bool HasSideEffects = Record[0] & 1;
+ bool IsAlignStack = Record[0] >> 1;
+ unsigned AsmStrSize = Record[1];
+ if (2+AsmStrSize >= Record.size())
+ return Error("Invalid INLINEASM record");
+ unsigned ConstStrSize = Record[2+AsmStrSize];
+ if (3+AsmStrSize+ConstStrSize > Record.size())
+ return Error("Invalid INLINEASM record");
+
+ for (unsigned i = 0; i != AsmStrSize; ++i)
+ AsmStr += (char)Record[2+i];
+ for (unsigned i = 0; i != ConstStrSize; ++i)
+ ConstrStr += (char)Record[3+AsmStrSize+i];
+ PointerType *PTy = cast<PointerType>(CurTy);
+ V = InlineAsm::get(cast<FunctionType>(PTy->getElementType()),
+ AsmStr, ConstrStr, HasSideEffects, IsAlignStack);
+ break;
+ }
+ case bitc::CST_CODE_BLOCKADDRESS:{
+ if (Record.size() < 3) return Error("Invalid CE_BLOCKADDRESS record");
+ Type *FnTy = getTypeByID(Record[0]);
+ if (FnTy == 0) return Error("Invalid CE_BLOCKADDRESS record");
+ Function *Fn =
+ dyn_cast_or_null<Function>(ValueList.getConstantFwdRef(Record[1],FnTy));
+ if (Fn == 0) return Error("Invalid CE_BLOCKADDRESS record");
+
+ GlobalVariable *FwdRef = new GlobalVariable(*Fn->getParent(),
+ Type::getInt8Ty(Context),
+ false, GlobalValue::InternalLinkage,
+ 0, "");
+ BlockAddrFwdRefs[Fn].push_back(std::make_pair(Record[2], FwdRef));
+ V = FwdRef;
+ break;
+ }
+ }
+
+ ValueList.AssignValue(V, NextCstNo);
+ ++NextCstNo;
+ }
+
+ if (NextCstNo != ValueList.size())
+ return Error("Invalid constant reference!");
+
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of constants block");
+
+ // Once all the constants have been read, go through and resolve forward
+ // references.
+ ValueList.ResolveConstantForwardRefs();
+ return false;
+}
+
+/// RememberAndSkipFunctionBody - When we see the block for a function body,
+/// remember where it is and then skip it. This lets us lazily deserialize the
+/// functions.
+bool BitcodeReader::RememberAndSkipFunctionBody() {
+ // Get the function we are talking about.
+ if (FunctionsWithBodies.empty())
+ return Error("Insufficient function protos");
+
+ Function *Fn = FunctionsWithBodies.back();
+ FunctionsWithBodies.pop_back();
+
+ // Save the current stream state.
+ uint64_t CurBit = Stream.GetCurrentBitNo();
+ DeferredFunctionInfo[Fn] = CurBit;
+
+ // Skip over the function block for now.
+ if (Stream.SkipBlock())
+ return Error("Malformed block record");
+ return false;
+}
+
+bool BitcodeReader::ParseModule() {
+ if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+ std::vector<std::string> SectionTable;
+ std::vector<std::string> GCTable;
+
+ // 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");
+
+ // Patch the initializers for globals and aliases up.
+ ResolveGlobalAndAliasInits();
+ if (!GlobalInits.empty() || !AliasInits.empty())
+ return Error("Malformed global initializer set");
+ if (!FunctionsWithBodies.empty())
+ return Error("Too few function bodies found");
+
+ // Look for intrinsic functions which need to be upgraded at some point
+ for (Module::iterator FI = TheModule->begin(), FE = TheModule->end();
+ FI != FE; ++FI) {
+ Function* NewFn;
+ if (UpgradeIntrinsicFunction(FI, NewFn))
+ 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<std::pair<GlobalVariable*, unsigned> >().swap(GlobalInits);
+ std::vector<std::pair<GlobalAlias*, unsigned> >().swap(AliasInits);
+ std::vector<Function*>().swap(FunctionsWithBodies);
+ return false;
+ }
+
+ if (Code == bitc::ENTER_SUBBLOCK) {
+ switch (Stream.ReadSubBlockID()) {
+ default: // Skip unknown content.
+ if (Stream.SkipBlock())
+ return Error("Malformed block record");
+ break;
+ case bitc::BLOCKINFO_BLOCK_ID:
+ if (Stream.ReadBlockInfoBlock())
+ return Error("Malformed BlockInfoBlock");
+ break;
+ case bitc::PARAMATTR_BLOCK_ID:
+ if (ParseAttributeBlock())
+ return true;
+ break;
+ case bitc::TYPE_BLOCK_ID_NEW:
+ if (ParseTypeTable())
+ return true;
+ break;
+ 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:
+ if (ParseValueSymbolTable())
+ return true;
+ break;
+ case bitc::CONSTANTS_BLOCK_ID:
+ if (ParseConstants() || ResolveGlobalAndAliasInits())
+ return true;
+ break;
+ case bitc::METADATA_BLOCK_ID:
+ if (ParseMetadata())
+ return true;
+ break;
+ case bitc::FUNCTION_BLOCK_ID:
+ // If this is the first function body we've seen, reverse the
+ // FunctionsWithBodies list.
+ if (!HasReversedFunctionsWithBodies) {
+ std::reverse(FunctionsWithBodies.begin(), FunctionsWithBodies.end());
+ HasReversedFunctionsWithBodies = true;
+ }
+
+ if (RememberAndSkipFunctionBody())
+ return true;
+ 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");
+ TheModule->setTargetTriple(S);
+ break;
+ }
+ case bitc::MODULE_CODE_DATALAYOUT: { // DATALAYOUT: [strchr x N]
+ std::string S;
+ if (ConvertToString(Record, 0, S))
+ return Error("Invalid MODULE_CODE_DATALAYOUT record");
+ TheModule->setDataLayout(S);
+ break;
+ }
+ case bitc::MODULE_CODE_ASM: { // ASM: [strchr x N]
+ std::string S;
+ if (ConvertToString(Record, 0, S))
+ return Error("Invalid MODULE_CODE_ASM record");
+ TheModule->setModuleInlineAsm(S);
+ break;
+ }
+ case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N]
+ std::string S;
+ if (ConvertToString(Record, 0, S))
+ return Error("Invalid MODULE_CODE_DEPLIB record");
+ TheModule->addLibrary(S);
+ break;
+ }
+ case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N]
+ std::string S;
+ if (ConvertToString(Record, 0, S))
+ return Error("Invalid MODULE_CODE_SECTIONNAME record");
+ SectionTable.push_back(S);
+ break;
+ }
+ case bitc::MODULE_CODE_GCNAME: { // SECTIONNAME: [strchr x N]
+ std::string S;
+ if (ConvertToString(Record, 0, S))
+ return Error("Invalid MODULE_CODE_GCNAME record");
+ GCTable.push_back(S);
+ break;
+ }
+ // GLOBALVAR: [pointer type, isconst, initid,
+ // linkage, alignment, section, visibility, threadlocal,
+ // unnamed_addr]
+ case bitc::MODULE_CODE_GLOBALVAR: {
+ if (Record.size() < 6)
+ return Error("Invalid MODULE_CODE_GLOBALVAR record");
+ 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<PointerType>(Ty)->getAddressSpace();
+ Ty = cast<PointerType>(Ty)->getElementType();
+
+ bool isConstant = Record[1];
+ GlobalValue::LinkageTypes Linkage = GetDecodedLinkage(Record[3]);
+ unsigned Alignment = (1 << Record[4]) >> 1;
+ std::string Section;
+ if (Record[5]) {
+ if (Record[5]-1 >= SectionTable.size())
+ return Error("Invalid section ID");
+ Section = SectionTable[Record[5]-1];
+ }
+ GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility;
+ if (Record.size() > 6)
+ Visibility = GetDecodedVisibility(Record[6]);
+ bool isThreadLocal = false;
+ 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);
+ NewGV->setAlignment(Alignment);
+ if (!Section.empty())
+ NewGV->setSection(Section);
+ NewGV->setVisibility(Visibility);
+ NewGV->setThreadLocal(isThreadLocal);
+ NewGV->setUnnamedAddr(UnnamedAddr);
+
+ ValueList.push_back(NewGV);
+
+ // Remember which value to use for the global initializer.
+ if (unsigned InitID = Record[2])
+ GlobalInits.push_back(std::make_pair(NewGV, InitID-1));
+ break;
+ }
+ // FUNCTION: [type, callingconv, isproto, linkage, paramattr,
+ // alignment, section, visibility, gc, unnamed_addr]
+ case bitc::MODULE_CODE_FUNCTION: {
+ if (Record.size() < 8)
+ return Error("Invalid MODULE_CODE_FUNCTION record");
+ Type *Ty = getTypeByID(Record[0]);
+ if (!Ty) return Error("Invalid MODULE_CODE_FUNCTION record");
+ if (!Ty->isPointerTy())
+ return Error("Function not a pointer type!");
+ FunctionType *FTy =
+ dyn_cast<FunctionType>(cast<PointerType>(Ty)->getElementType());
+ if (!FTy)
+ return Error("Function not a pointer to function type!");
+
+ Function *Func = Function::Create(FTy, GlobalValue::ExternalLinkage,
+ "", TheModule);
+
+ Func->setCallingConv(static_cast<CallingConv::ID>(Record[1]));
+ bool isProto = Record[2];
+ Func->setLinkage(GetDecodedLinkage(Record[3]));
+ Func->setAttributes(getAttributes(Record[4]));
+
+ Func->setAlignment((1 << Record[5]) >> 1);
+ if (Record[6]) {
+ if (Record[6]-1 >= SectionTable.size())
+ return Error("Invalid section ID");
+ Func->setSection(SectionTable[Record[6]-1]);
+ }
+ Func->setVisibility(GetDecodedVisibility(Record[7]));
+ if (Record.size() > 8 && Record[8]) {
+ if (Record[8]-1 > GCTable.size())
+ 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
+ // creating now, so that we can match up the body with them later.
+ if (!isProto)
+ FunctionsWithBodies.push_back(Func);
+ break;
+ }
+ // ALIAS: [alias type, aliasee val#, linkage]
+ // ALIAS: [alias type, aliasee val#, linkage, visibility]
+ case bitc::MODULE_CODE_ALIAS: {
+ if (Record.size() < 3)
+ return Error("Invalid MODULE_ALIAS record");
+ Type *Ty = getTypeByID(Record[0]);
+ if (!Ty) return Error("Invalid MODULE_ALIAS record");
+ if (!Ty->isPointerTy())
+ return Error("Function not a pointer type!");
+
+ GlobalAlias *NewGA = new GlobalAlias(Ty, GetDecodedLinkage(Record[2]),
+ "", 0, TheModule);
+ // Old bitcode files didn't have visibility field.
+ if (Record.size() > 3)
+ NewGA->setVisibility(GetDecodedVisibility(Record[3]));
+ ValueList.push_back(NewGA);
+ AliasInits.push_back(std::make_pair(NewGA, Record[1]));
+ break;
+ }
+ /// MODULE_CODE_PURGEVALS: [numvals]
+ case bitc::MODULE_CODE_PURGEVALS:
+ // Trim down the value list to the specified size.
+ if (Record.size() < 1 || Record[0] > ValueList.size())
+ return Error("Invalid MODULE_PURGEVALS record");
+ ValueList.shrinkTo(Record[0]);
+ break;
+ }
+ Record.clear();
+ }
+
+ return Error("Premature end of bitstream");
+}
+
+bool BitcodeReader::ParseBitcodeInto(Module *M) {
+ TheModule = 0;
+
+ unsigned char *BufPtr = (unsigned char *)Buffer->getBufferStart();
+ unsigned char *BufEnd = BufPtr+Buffer->getBufferSize();
+
+ if (Buffer->getBufferSize() & 3) {
+ if (!isRawBitcode(BufPtr, BufEnd) && !isBitcodeWrapper(BufPtr, BufEnd))
+ return Error("Invalid bitcode signature");
+ else
+ return Error("Bitcode stream should be a multiple of 4 bytes in length");
+ }
+
+ // 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) {
+
+ // 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();
+
+ // We only know the MODULE subblock ID.
+ switch (BlockID) {
+ case bitc::BLOCKINFO_BLOCK_ID:
+ if (Stream.ReadBlockInfoBlock())
+ return Error("Malformed BlockInfoBlock");
+ break;
+ case bitc::MODULE_BLOCK_ID:
+ // Reject multiple MODULE_BLOCK's in a single bitstream.
+ if (TheModule)
+ return Error("Multiple MODULE_BLOCKs in same stream");
+ TheModule = M;
+ if (ParseModule())
+ return true;
+ break;
+ default:
+ if (Stream.SkipBlock())
+ return Error("Malformed block record");
+ break;
+ }
+ }
+
+ return false;
+}
+
+bool BitcodeReader::ParseModuleTriple(std::string &Triple) {
+ if (Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> 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))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+ while(1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of PARAMATTR block");
+ break;
+ }
+ if (Code == bitc::DEFINE_ABBREV) {
+ Stream.ReadAbbrevRecord();
+ continue;
+ }
+ // Read a metadata attachment record.
+ Record.clear();
+ switch (Stream.ReadRecord(Code, Record)) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::METADATA_ATTACHMENT: {
+ unsigned RecordLength = Record.size();
+ if (Record.empty() || (RecordLength - 1) % 2 == 1)
+ return Error ("Invalid METADATA_ATTACHMENT reader!");
+ Instruction *Inst = InstructionList[Record[0]];
+ for (unsigned i = 1; i != RecordLength; i = i+2) {
+ unsigned Kind = Record[i];
+ DenseMap<unsigned, unsigned>::iterator I =
+ MDKindMap.find(Kind);
+ if (I == MDKindMap.end())
+ return Error("Invalid metadata kind ID");
+ Value *Node = MDValueList.getValueFwdRef(Record[i+1]);
+ Inst->setMetadata(I->second, cast<MDNode>(Node));
+ }
+ break;
+ }
+ }
+ }
+ return false;
+}
+
+/// ParseFunctionBody - Lazily parse the specified function body block.
+bool BitcodeReader::ParseFunctionBody(Function *F) {
+ if (Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID))
+ return Error("Malformed block record");
+
+ 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)
+ ValueList.push_back(I);
+
+ unsigned NextValueNo = ValueList.size();
+ BasicBlock *CurBB = 0;
+ unsigned CurBBNo = 0;
+
+ DebugLoc LastLoc;
+
+ // Read all the records.
+ SmallVector<uint64_t, 64> Record;
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of function block");
+ break;
+ }
+
+ if (Code == bitc::ENTER_SUBBLOCK) {
+ switch (Stream.ReadSubBlockID()) {
+ default: // Skip unknown content.
+ if (Stream.SkipBlock())
+ return Error("Malformed block record");
+ break;
+ case bitc::CONSTANTS_BLOCK_ID:
+ if (ParseConstants()) return true;
+ NextValueNo = ValueList.size();
+ break;
+ case bitc::VALUE_SYMTAB_BLOCK_ID:
+ if (ParseValueSymbolTable()) return true;
+ break;
+ case bitc::METADATA_ATTACHMENT_ID:
+ if (ParseMetadataAttachment()) return true;
+ break;
+ case bitc::METADATA_BLOCK_ID:
+ if (ParseMetadata()) return true;
+ break;
+ }
+ continue;
+ }
+
+ if (Code == bitc::DEFINE_ABBREV) {
+ Stream.ReadAbbrevRecord();
+ continue;
+ }
+
+ // Read a record.
+ Record.clear();
+ Instruction *I = 0;
+ unsigned BitCode = Stream.ReadRecord(Code, Record);
+ switch (BitCode) {
+ default: // Default behavior: reject
+ return Error("Unknown instruction");
+ case bitc::FUNC_CODE_DECLAREBLOCKS: // DECLAREBLOCKS: [nblocks]
+ if (Record.size() < 1 || Record[0] == 0)
+ return Error("Invalid DECLAREBLOCKS record");
+ // Create all the basic blocks for the function.
+ FunctionBBs.resize(Record[0]);
+ for (unsigned i = 0, e = FunctionBBs.size(); i != e; ++i)
+ 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
+ // location as the previous instruction with a location.
+ I = 0;
+
+ // Get the last instruction emitted.
+ if (CurBB && !CurBB->empty())
+ I = &CurBB->back();
+ else if (CurBBNo && FunctionBBs[CurBBNo-1] &&
+ !FunctionBBs[CurBBNo-1]->empty())
+ I = &FunctionBBs[CurBBNo-1]->back();
+
+ if (I == 0) return Error("Invalid DEBUG_LOC_AGAIN record");
+ I->setDebugLoc(LastLoc);
+ I = 0;
+ continue;
+
+ case bitc::FUNC_CODE_DEBUG_LOC: { // DEBUG_LOC: [line, col, scope, ia]
+ I = 0; // Get the last instruction emitted.
+ if (CurBB && !CurBB->empty())
+ I = &CurBB->back();
+ else if (CurBBNo && FunctionBBs[CurBBNo-1] &&
+ !FunctionBBs[CurBBNo-1]->empty())
+ I = &FunctionBBs[CurBBNo-1]->back();
+ if (I == 0 || Record.size() < 4)
+ return Error("Invalid FUNC_CODE_DEBUG_LOC record");
+
+ unsigned Line = Record[0], Col = Record[1];
+ unsigned ScopeID = Record[2], IAID = Record[3];
+
+ MDNode *Scope = 0, *IA = 0;
+ if (ScopeID) Scope = cast<MDNode>(MDValueList.getValueFwdRef(ScopeID-1));
+ if (IAID) IA = cast<MDNode>(MDValueList.getValueFwdRef(IAID-1));
+ LastLoc = DebugLoc::get(Line, Col, Scope, IA);
+ I->setDebugLoc(LastLoc);
+ I = 0;
+ continue;
+ }
+
+ case bitc::FUNC_CODE_INST_BINOP: { // BINOP: [opval, ty, opval, opcode]
+ unsigned OpNum = 0;
+ Value *LHS, *RHS;
+ if (getValueTypePair(Record, OpNum, NextValueNo, LHS) ||
+ getValue(Record, OpNum, LHS->getType(), RHS) ||
+ OpNum+1 > Record.size())
+ return Error("Invalid BINOP record");
+
+ int Opc = GetDecodedBinaryOpcode(Record[OpNum++], LHS->getType());
+ if (Opc == -1) return Error("Invalid BINOP record");
+ I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
+ InstructionList.push_back(I);
+ if (OpNum < Record.size()) {
+ if (Opc == Instruction::Add ||
+ Opc == Instruction::Sub ||
+ Opc == Instruction::Mul ||
+ Opc == Instruction::Shl) {
+ if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP))
+ cast<BinaryOperator>(I)->setHasNoSignedWrap(true);
+ if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP))
+ cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true);
+ } else if (Opc == Instruction::SDiv ||
+ Opc == Instruction::UDiv ||
+ Opc == Instruction::LShr ||
+ Opc == Instruction::AShr) {
+ if (Record[OpNum] & (1 << bitc::PEO_EXACT))
+ cast<BinaryOperator>(I)->setIsExact(true);
+ }
+ }
+ break;
+ }
+ case bitc::FUNC_CODE_INST_CAST: { // CAST: [opval, opty, destty, castopc]
+ unsigned OpNum = 0;
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
+ OpNum+2 != Record.size())
+ return Error("Invalid CAST record");
+
+ Type *ResTy = getTypeByID(Record[OpNum]);
+ int Opc = GetDecodedCastOpcode(Record[OpNum+1]);
+ if (Opc == -1 || ResTy == 0)
+ return Error("Invalid CAST record");
+ I = CastInst::Create((Instruction::CastOps)Opc, Op, ResTy);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_INBOUNDS_GEP:
+ case bitc::FUNC_CODE_INST_GEP: { // GEP: [n x operands]
+ unsigned OpNum = 0;
+ Value *BasePtr;
+ if (getValueTypePair(Record, OpNum, NextValueNo, BasePtr))
+ return Error("Invalid GEP record");
+
+ SmallVector<Value*, 16> GEPIdx;
+ while (OpNum != Record.size()) {
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+ return Error("Invalid GEP record");
+ GEPIdx.push_back(Op);
+ }
+
+ I = GetElementPtrInst::Create(BasePtr, GEPIdx);
+ InstructionList.push_back(I);
+ if (BitCode == bitc::FUNC_CODE_INST_INBOUNDS_GEP)
+ cast<GetElementPtrInst>(I)->setIsInBounds(true);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_EXTRACTVAL: {
+ // EXTRACTVAL: [opty, opval, n x indices]
+ unsigned OpNum = 0;
+ Value *Agg;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
+ return Error("Invalid EXTRACTVAL record");
+
+ SmallVector<unsigned, 4> EXTRACTVALIdx;
+ for (unsigned RecSize = Record.size();
+ OpNum != RecSize; ++OpNum) {
+ uint64_t Index = Record[OpNum];
+ if ((unsigned)Index != Index)
+ return Error("Invalid EXTRACTVAL index");
+ EXTRACTVALIdx.push_back((unsigned)Index);
+ }
+
+ I = ExtractValueInst::Create(Agg, EXTRACTVALIdx);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_INSERTVAL: {
+ // INSERTVAL: [opty, opval, opty, opval, n x indices]
+ unsigned OpNum = 0;
+ Value *Agg;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
+ return Error("Invalid INSERTVAL record");
+ Value *Val;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Val))
+ return Error("Invalid INSERTVAL record");
+
+ SmallVector<unsigned, 4> INSERTVALIdx;
+ for (unsigned RecSize = Record.size();
+ OpNum != RecSize; ++OpNum) {
+ uint64_t Index = Record[OpNum];
+ if ((unsigned)Index != Index)
+ return Error("Invalid INSERTVAL index");
+ INSERTVALIdx.push_back((unsigned)Index);
+ }
+
+ I = InsertValueInst::Create(Agg, Val, INSERTVALIdx);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_SELECT: { // SELECT: [opval, ty, opval, opval]
+ // obsolete form of select
+ // handles select i1 ... in old bitcode
+ unsigned OpNum = 0;
+ Value *TrueVal, *FalseVal, *Cond;
+ if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) ||
+ getValue(Record, OpNum, TrueVal->getType(), FalseVal) ||
+ getValue(Record, OpNum, Type::getInt1Ty(Context), Cond))
+ return Error("Invalid SELECT record");
+
+ I = SelectInst::Create(Cond, TrueVal, FalseVal);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_VSELECT: {// VSELECT: [ty,opval,opval,predty,pred]
+ // new form of select
+ // handles select i1 or select [N x i1]
+ unsigned OpNum = 0;
+ Value *TrueVal, *FalseVal, *Cond;
+ if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) ||
+ getValue(Record, OpNum, TrueVal->getType(), FalseVal) ||
+ getValueTypePair(Record, OpNum, NextValueNo, Cond))
+ return Error("Invalid SELECT record");
+
+ // select condition can be either i1 or [N x i1]
+ if (VectorType* vector_type =
+ dyn_cast<VectorType>(Cond->getType())) {
+ // expect <n x i1>
+ if (vector_type->getElementType() != Type::getInt1Ty(Context))
+ return Error("Invalid SELECT condition type");
+ } else {
+ // expect i1
+ if (Cond->getType() != Type::getInt1Ty(Context))
+ return Error("Invalid SELECT condition type");
+ }
+
+ I = SelectInst::Create(Cond, TrueVal, FalseVal);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_EXTRACTELT: { // EXTRACTELT: [opty, opval, opval]
+ unsigned OpNum = 0;
+ Value *Vec, *Idx;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Vec) ||
+ getValue(Record, OpNum, Type::getInt32Ty(Context), Idx))
+ return Error("Invalid EXTRACTELT record");
+ I = ExtractElementInst::Create(Vec, Idx);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_INSERTELT: { // INSERTELT: [ty, opval,opval,opval]
+ unsigned OpNum = 0;
+ Value *Vec, *Elt, *Idx;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Vec) ||
+ getValue(Record, OpNum,
+ cast<VectorType>(Vec->getType())->getElementType(), Elt) ||
+ getValue(Record, OpNum, Type::getInt32Ty(Context), Idx))
+ return Error("Invalid INSERTELT record");
+ I = InsertElementInst::Create(Vec, Elt, Idx);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_SHUFFLEVEC: {// SHUFFLEVEC: [opval,ty,opval,opval]
+ unsigned OpNum = 0;
+ Value *Vec1, *Vec2, *Mask;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Vec1) ||
+ getValue(Record, OpNum, Vec1->getType(), Vec2))
+ return Error("Invalid SHUFFLEVEC record");
+
+ if (getValueTypePair(Record, OpNum, NextValueNo, Mask))
+ return Error("Invalid SHUFFLEVEC record");
+ I = new ShuffleVectorInst(Vec1, Vec2, Mask);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_CMP: // CMP: [opty, opval, opval, pred]
+ // Old form of ICmp/FCmp returning bool
+ // Existed to differentiate between icmp/fcmp and vicmp/vfcmp which were
+ // both legal on vectors but had different behaviour.
+ case bitc::FUNC_CODE_INST_CMP2: { // CMP2: [opty, opval, opval, pred]
+ // FCmp/ICmp returning bool or vector of bool
+
+ unsigned OpNum = 0;
+ Value *LHS, *RHS;
+ if (getValueTypePair(Record, OpNum, NextValueNo, LHS) ||
+ getValue(Record, OpNum, LHS->getType(), RHS) ||
+ OpNum+1 != Record.size())
+ return Error("Invalid CMP record");
+
+ if (LHS->getType()->isFPOrFPVectorTy())
+ I = new FCmpInst((FCmpInst::Predicate)Record[OpNum], LHS, RHS);
+ else
+ I = new ICmpInst((ICmpInst::Predicate)Record[OpNum], LHS, RHS);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>]
+ {
+ unsigned Size = Record.size();
+ if (Size == 0) {
+ I = ReturnInst::Create(Context);
+ InstructionList.push_back(I);
+ break;
+ }
+
+ unsigned OpNum = 0;
+ 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, Op);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#]
+ if (Record.size() != 1 && Record.size() != 3)
+ return Error("Invalid BR record");
+ BasicBlock *TrueDest = getBasicBlock(Record[0]);
+ if (TrueDest == 0)
+ return Error("Invalid BR record");
+
+ if (Record.size() == 1) {
+ I = BranchInst::Create(TrueDest);
+ InstructionList.push_back(I);
+ }
+ else {
+ BasicBlock *FalseDest = getBasicBlock(Record[1]);
+ Value *Cond = getFnValueByID(Record[2], Type::getInt1Ty(Context));
+ if (FalseDest == 0 || Cond == 0)
+ return Error("Invalid BR record");
+ I = BranchInst::Create(TrueDest, FalseDest, Cond);
+ InstructionList.push_back(I);
+ }
+ break;
+ }
+ case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...]
+ if (Record.size() < 3 || (Record.size() & 1) == 0)
+ return Error("Invalid SWITCH record");
+ Type *OpTy = getTypeByID(Record[0]);
+ Value *Cond = getFnValueByID(Record[1], OpTy);
+ BasicBlock *Default = getBasicBlock(Record[2]);
+ if (OpTy == 0 || Cond == 0 || Default == 0)
+ return Error("Invalid SWITCH record");
+ unsigned NumCases = (Record.size()-3)/2;
+ SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases);
+ InstructionList.push_back(SI);
+ for (unsigned i = 0, e = NumCases; i != e; ++i) {
+ ConstantInt *CaseVal =
+ dyn_cast_or_null<ConstantInt>(getFnValueByID(Record[3+i*2], OpTy));
+ BasicBlock *DestBB = getBasicBlock(Record[1+3+i*2]);
+ if (CaseVal == 0 || DestBB == 0) {
+ delete SI;
+ return Error("Invalid SWITCH record!");
+ }
+ SI->addCase(CaseVal, DestBB);
+ }
+ I = SI;
+ break;
+ }
+ case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...]
+ if (Record.size() < 2)
+ return Error("Invalid INDIRECTBR record");
+ Type *OpTy = getTypeByID(Record[0]);
+ Value *Address = getFnValueByID(Record[1], OpTy);
+ if (OpTy == 0 || Address == 0)
+ return Error("Invalid INDIRECTBR record");
+ unsigned NumDests = Record.size()-2;
+ IndirectBrInst *IBI = IndirectBrInst::Create(Address, NumDests);
+ InstructionList.push_back(IBI);
+ for (unsigned i = 0, e = NumDests; i != e; ++i) {
+ if (BasicBlock *DestBB = getBasicBlock(Record[2+i])) {
+ IBI->addDestination(DestBB);
+ } else {
+ delete IBI;
+ return Error("Invalid INDIRECTBR record!");
+ }
+ }
+ I = IBI;
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_INVOKE: {
+ // INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...]
+ if (Record.size() < 4) return Error("Invalid INVOKE record");
+ AttrListPtr PAL = getAttributes(Record[0]);
+ unsigned CCInfo = Record[1];
+ BasicBlock *NormalBB = getBasicBlock(Record[2]);
+ BasicBlock *UnwindBB = getBasicBlock(Record[3]);
+
+ unsigned OpNum = 4;
+ Value *Callee;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
+ return Error("Invalid INVOKE record");
+
+ PointerType *CalleeTy = dyn_cast<PointerType>(Callee->getType());
+ FunctionType *FTy = !CalleeTy ? 0 :
+ dyn_cast<FunctionType>(CalleeTy->getElementType());
+
+ // Check that the right number of fixed parameters are here.
+ if (FTy == 0 || NormalBB == 0 || UnwindBB == 0 ||
+ Record.size() < OpNum+FTy->getNumParams())
+ return Error("Invalid INVOKE record");
+
+ SmallVector<Value*, 16> Ops;
+ for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
+ Ops.push_back(getFnValueByID(Record[OpNum], FTy->getParamType(i)));
+ if (Ops.back() == 0) return Error("Invalid INVOKE record");
+ }
+
+ if (!FTy->isVarArg()) {
+ if (Record.size() != OpNum)
+ return Error("Invalid INVOKE record");
+ } else {
+ // Read type/value pairs for varargs params.
+ while (OpNum != Record.size()) {
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+ return Error("Invalid INVOKE record");
+ Ops.push_back(Op);
+ }
+ }
+
+ I = InvokeInst::Create(Callee, NormalBB, UnwindBB, Ops);
+ InstructionList.push_back(I);
+ cast<InvokeInst>(I)->setCallingConv(
+ static_cast<CallingConv::ID>(CCInfo));
+ cast<InvokeInst>(I)->setAttributes(PAL);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_RESUME: { // RESUME: [opval]
+ unsigned Idx = 0;
+ Value *Val = 0;
+ if (getValueTypePair(Record, Idx, NextValueNo, Val))
+ return Error("Invalid RESUME record");
+ I = ResumeInst::Create(Val);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_UNWIND: // UNWIND
+ I = new UnwindInst(Context);
+ InstructionList.push_back(I);
+ break;
+ case bitc::FUNC_CODE_INST_UNREACHABLE: // UNREACHABLE
+ I = new UnreachableInst(Context);
+ InstructionList.push_back(I);
+ break;
+ case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...]
+ if (Record.size() < 1 || ((Record.size()-1)&1))
+ return Error("Invalid PHI record");
+ Type *Ty = getTypeByID(Record[0]);
+ if (!Ty) return Error("Invalid PHI record");
+
+ PHINode *PN = PHINode::Create(Ty, (Record.size()-1)/2);
+ InstructionList.push_back(PN);
+
+ for (unsigned i = 0, e = Record.size()-1; i != e; i += 2) {
+ Value *V = getFnValueByID(Record[1+i], Ty);
+ BasicBlock *BB = getBasicBlock(Record[2+i]);
+ if (!V || !BB) return Error("Invalid PHI record");
+ PN->addIncoming(V, BB);
+ }
+ I = PN;
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_LANDINGPAD: {
+ // LANDINGPAD: [ty, val, val, num, (id0,val0 ...)?]
+ unsigned Idx = 0;
+ if (Record.size() < 4)
+ return Error("Invalid LANDINGPAD record");
+ Type *Ty = getTypeByID(Record[Idx++]);
+ if (!Ty) return Error("Invalid LANDINGPAD record");
+ Value *PersFn = 0;
+ if (getValueTypePair(Record, Idx, NextValueNo, PersFn))
+ return Error("Invalid LANDINGPAD record");
+
+ bool IsCleanup = !!Record[Idx++];
+ unsigned NumClauses = Record[Idx++];
+ LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, NumClauses);
+ LP->setCleanup(IsCleanup);
+ for (unsigned J = 0; J != NumClauses; ++J) {
+ LandingPadInst::ClauseType CT =
+ LandingPadInst::ClauseType(Record[Idx++]); (void)CT;
+ Value *Val;
+
+ if (getValueTypePair(Record, Idx, NextValueNo, Val)) {
+ delete LP;
+ return Error("Invalid LANDINGPAD record");
+ }
+
+ assert((CT != LandingPadInst::Catch ||
+ !isa<ArrayType>(Val->getType())) &&
+ "Catch clause has a invalid type!");
+ assert((CT != LandingPadInst::Filter ||
+ isa<ArrayType>(Val->getType())) &&
+ "Filter clause has invalid type!");
+ LP->addClause(Val);
+ }
+
+ I = LP;
+ InstructionList.push_back(I);
+ break;
+ }
+
+ case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align]
+ if (Record.size() != 4)
+ return Error("Invalid ALLOCA record");
+ PointerType *Ty =
+ dyn_cast_or_null<PointerType>(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);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_LOAD: { // LOAD: [opty, op, align, vol]
+ unsigned OpNum = 0;
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
+ OpNum+2 != Record.size())
+ return Error("Invalid LOAD record");
+
+ I = new LoadInst(Op, "", Record[OpNum+1], (1 << Record[OpNum]) >> 1);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_LOADATOMIC: {
+ // LOADATOMIC: [opty, op, align, vol, ordering, synchscope]
+ unsigned OpNum = 0;
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op) ||
+ OpNum+4 != Record.size())
+ return Error("Invalid LOADATOMIC record");
+
+
+ AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
+ if (Ordering == NotAtomic || Ordering == Release ||
+ Ordering == AcquireRelease)
+ return Error("Invalid LOADATOMIC record");
+ if (Ordering != NotAtomic && Record[OpNum] == 0)
+ return Error("Invalid LOADATOMIC record");
+ SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
+
+ I = new LoadInst(Op, "", Record[OpNum+1], (1 << Record[OpNum]) >> 1,
+ Ordering, SynchScope);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_STORE: { // STORE2:[ptrty, ptr, val, align, vol]
+ unsigned OpNum = 0;
+ Value *Val, *Ptr;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
+ getValue(Record, OpNum,
+ cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
+ 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_STOREATOMIC: {
+ // STOREATOMIC: [ptrty, ptr, val, align, vol, ordering, synchscope]
+ unsigned OpNum = 0;
+ Value *Val, *Ptr;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
+ getValue(Record, OpNum,
+ cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
+ OpNum+4 != Record.size())
+ return Error("Invalid STOREATOMIC record");
+
+ AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
+ if (Ordering == NotAtomic || Ordering == Acquire ||
+ Ordering == AcquireRelease)
+ return Error("Invalid STOREATOMIC record");
+ SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
+ if (Ordering != NotAtomic && Record[OpNum] == 0)
+ return Error("Invalid STOREATOMIC record");
+
+ I = new StoreInst(Val, Ptr, Record[OpNum+1], (1 << Record[OpNum]) >> 1,
+ Ordering, SynchScope);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_CMPXCHG: {
+ // CMPXCHG:[ptrty, ptr, cmp, new, vol, ordering, synchscope]
+ unsigned OpNum = 0;
+ Value *Ptr, *Cmp, *New;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
+ getValue(Record, OpNum,
+ cast<PointerType>(Ptr->getType())->getElementType(), Cmp) ||
+ getValue(Record, OpNum,
+ cast<PointerType>(Ptr->getType())->getElementType(), New) ||
+ OpNum+3 != Record.size())
+ return Error("Invalid CMPXCHG record");
+ AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+1]);
+ if (Ordering == NotAtomic || Ordering == Unordered)
+ return Error("Invalid CMPXCHG record");
+ SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+2]);
+ I = new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, SynchScope);
+ cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_ATOMICRMW: {
+ // ATOMICRMW:[ptrty, ptr, val, op, vol, ordering, synchscope]
+ unsigned OpNum = 0;
+ Value *Ptr, *Val;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) ||
+ getValue(Record, OpNum,
+ cast<PointerType>(Ptr->getType())->getElementType(), Val) ||
+ OpNum+4 != Record.size())
+ return Error("Invalid ATOMICRMW record");
+ AtomicRMWInst::BinOp Operation = GetDecodedRMWOperation(Record[OpNum]);
+ if (Operation < AtomicRMWInst::FIRST_BINOP ||
+ Operation > AtomicRMWInst::LAST_BINOP)
+ return Error("Invalid ATOMICRMW record");
+ AtomicOrdering Ordering = GetDecodedOrdering(Record[OpNum+2]);
+ if (Ordering == NotAtomic || Ordering == Unordered)
+ return Error("Invalid ATOMICRMW record");
+ SynchronizationScope SynchScope = GetDecodedSynchScope(Record[OpNum+3]);
+ I = new AtomicRMWInst(Operation, Ptr, Val, Ordering, SynchScope);
+ cast<AtomicRMWInst>(I)->setVolatile(Record[OpNum+1]);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_FENCE: { // FENCE:[ordering, synchscope]
+ if (2 != Record.size())
+ return Error("Invalid FENCE record");
+ AtomicOrdering Ordering = GetDecodedOrdering(Record[0]);
+ if (Ordering == NotAtomic || Ordering == Unordered ||
+ Ordering == Monotonic)
+ return Error("Invalid FENCE record");
+ SynchronizationScope SynchScope = GetDecodedSynchScope(Record[1]);
+ I = new FenceInst(Context, Ordering, SynchScope);
+ InstructionList.push_back(I);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_CALL: {
+ // CALL: [paramattrs, cc, fnty, fnid, arg0, arg1...]
+ if (Record.size() < 3)
+ return Error("Invalid CALL record");
+
+ AttrListPtr PAL = getAttributes(Record[0]);
+ unsigned CCInfo = Record[1];
+
+ unsigned OpNum = 2;
+ Value *Callee;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
+ return Error("Invalid CALL record");
+
+ PointerType *OpTy = dyn_cast<PointerType>(Callee->getType());
+ FunctionType *FTy = 0;
+ if (OpTy) FTy = dyn_cast<FunctionType>(OpTy->getElementType());
+ if (!FTy || Record.size() < FTy->getNumParams()+OpNum)
+ return Error("Invalid CALL record");
+
+ SmallVector<Value*, 16> Args;
+ // Read the fixed params.
+ for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
+ if (FTy->getParamType(i)->isLabelTy())
+ Args.push_back(getBasicBlock(Record[OpNum]));
+ else
+ Args.push_back(getFnValueByID(Record[OpNum], FTy->getParamType(i)));
+ if (Args.back() == 0) return Error("Invalid CALL record");
+ }
+
+ // Read type/value pairs for varargs params.
+ if (!FTy->isVarArg()) {
+ if (OpNum != Record.size())
+ return Error("Invalid CALL record");
+ } else {
+ while (OpNum != Record.size()) {
+ Value *Op;
+ if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+ return Error("Invalid CALL record");
+ Args.push_back(Op);
+ }
+ }
+
+ I = CallInst::Create(Callee, Args);
+ InstructionList.push_back(I);
+ cast<CallInst>(I)->setCallingConv(
+ static_cast<CallingConv::ID>(CCInfo>>1));
+ cast<CallInst>(I)->setTailCall(CCInfo & 1);
+ cast<CallInst>(I)->setAttributes(PAL);
+ break;
+ }
+ case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty]
+ if (Record.size() < 3)
+ return Error("Invalid VAARG record");
+ Type *OpTy = getTypeByID(Record[0]);
+ Value *Op = getFnValueByID(Record[1], OpTy);
+ Type *ResTy = getTypeByID(Record[2]);
+ if (!OpTy || !Op || !ResTy)
+ return Error("Invalid VAARG record");
+ I = new VAArgInst(Op, ResTy);
+ InstructionList.push_back(I);
+ break;
+ }
+ }
+
+ // Add instruction to end of current BB. If there is no current BB, reject
+ // this file.
+ if (CurBB == 0) {
+ delete I;
+ return Error("Invalid instruction with no BB");
+ }
+ CurBB->getInstList().push_back(I);
+
+ // If this was a terminator instruction, move to the next block.
+ if (isa<TerminatorInst>(I)) {
+ ++CurBBNo;
+ CurBB = CurBBNo < FunctionBBs.size() ? FunctionBBs[CurBBNo] : 0;
+ }
+
+ // Non-void values get registered in the value table for future use.
+ if (I && !I->getType()->isVoidTy())
+ ValueList.AssignValue(I, NextValueNo++);
+ }
+
+ // Check the function list for unresolved values.
+ if (Argument *A = dyn_cast<Argument>(ValueList.back())) {
+ 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<Argument>(ValueList[i])) && A->getParent() == 0) {
+ A->replaceAllUsesWith(UndefValue::get(A->getType()));
+ delete A;
+ }
+ }
+ return Error("Never resolved value found in function!");
+ }
+ }
+
+ // 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<Function*, std::vector<BlockAddrRefTy> >::iterator BAFRI =
+ BlockAddrFwdRefs.find(F);
+ if (BAFRI != BlockAddrFwdRefs.end()) {
+ std::vector<BlockAddrRefTy> &RefList = BAFRI->second;
+ for (unsigned i = 0, e = RefList.size(); i != e; ++i) {
+ unsigned BlockIdx = RefList[i].first;
+ if (BlockIdx >= FunctionBBs.size())
+ return Error("Invalid blockaddress block #");
+
+ GlobalVariable *FwdRef = RefList[i].second;
+ FwdRef->replaceAllUsesWith(BlockAddress::get(F, FunctionBBs[BlockIdx]));
+ FwdRef->eraseFromParent();
+ }
+
+ BlockAddrFwdRefs.erase(BAFRI);
+ }
+
+ // Trim the value list down to the size it was before we parsed this function.
+ ValueList.shrinkTo(ModuleValueListSize);
+ MDValueList.shrinkTo(ModuleMDValueListSize);
+ std::vector<BasicBlock*>().swap(FunctionBBs);
+ return false;
+}
+
+//===----------------------------------------------------------------------===//
+// GVMaterializer implementation
+//===----------------------------------------------------------------------===//
+
+
+bool BitcodeReader::isMaterializable(const GlobalValue *GV) const {
+ if (const Function *F = dyn_cast<Function>(GV)) {
+ return F->isDeclaration() &&
+ DeferredFunctionInfo.count(const_cast<Function*>(F));
+ }
+ return false;
+}
+
+bool BitcodeReader::Materialize(GlobalValue *GV, std::string *ErrInfo) {
+ Function *F = dyn_cast<Function>(GV);
+ // If it's not a function or is already material, ignore the request.
+ if (!F || !F->isMaterializable()) return false;
+
+ DenseMap<Function*, uint64_t>::iterator DFII = DeferredFunctionInfo.find(F);
+ assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!");
+
+ // Move the bit stream to the saved position of the deferred function body.
+ Stream.JumpToBit(DFII->second);
+
+ if (ParseFunctionBody(F)) {
+ if (ErrInfo) *ErrInfo = ErrorString;
+ return true;
+ }
+
+ // Upgrade any old intrinsic calls in the function.
+ for (UpgradedIntrinsicMap::iterator I = UpgradedIntrinsics.begin(),
+ E = UpgradedIntrinsics.end(); I != E; ++I) {
+ if (I->first != I->second) {
+ for (Value::use_iterator UI = I->first->use_begin(),
+ UE = I->first->use_end(); UI != UE; ) {
+ if (CallInst* CI = dyn_cast<CallInst>(*UI++))
+ UpgradeIntrinsicCall(CI, I->second);
+ }
+ }
+ }
+
+ return false;
+}
+
+bool BitcodeReader::isDematerializable(const GlobalValue *GV) const {
+ const Function *F = dyn_cast<Function>(GV);
+ if (!F || F->isDeclaration())
+ 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->deleteBody();
+}
+
+
+bool BitcodeReader::MaterializeModule(Module *M, std::string *ErrInfo) {
+ assert(M == TheModule &&
+ "Can only Materialize the Module this BitcodeReader is attached to.");
+ // 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 (F->isMaterializable() &&
+ Materialize(F, ErrInfo))
+ return true;
+
+ // Upgrade any intrinsic calls that slipped through (should not happen!) and
+ // delete the old functions to clean up. We can't do this unless the entire
+ // module is materialized because there could always be another function body
+ // with calls to the old function.
+ for (std::vector<std::pair<Function*, Function*> >::iterator I =
+ UpgradedIntrinsics.begin(), E = UpgradedIntrinsics.end(); I != E; ++I) {
+ if (I->first != I->second) {
+ for (Value::use_iterator UI = I->first->use_begin(),
+ UE = I->first->use_end(); UI != UE; ) {
+ if (CallInst* CI = dyn_cast<CallInst>(*UI++))
+ UpgradeIntrinsicCall(CI, I->second);
+ }
+ if (!I->first->use_empty())
+ I->first->replaceAllUsesWith(I->second);
+ I->first->eraseFromParent();
+ }
+ }
+ std::vector<std::pair<Function*, Function*> >().swap(UpgradedIntrinsics);
+
+ // Upgrade to new EH scheme. N.B. This will go away in 3.1.
+ UpgradeExceptionHandling(M);
+
+ // Check debug info intrinsics.
+ CheckDebugInfoIntrinsics(TheModule);
+
+ return false;
+}
+
+
+//===----------------------------------------------------------------------===//
+// External interface
+//===----------------------------------------------------------------------===//
+
+/// getLazyBitcodeModule - lazy function-at-a-time loading from a file.
+///
+Module *llvm::getLazyBitcodeModule(MemoryBuffer *Buffer,
+ LLVMContext& Context,
+ std::string *ErrMsg) {
+ Module *M = new Module(Buffer->getBufferIdentifier(), Context);
+ BitcodeReader *R = new BitcodeReader(Buffer, Context);
+ M->setMaterializer(R);
+ if (R->ParseBitcodeInto(M)) {
+ if (ErrMsg)
+ *ErrMsg = R->getErrorString();
+
+ delete M; // Also deletes R.
+ return 0;
+ }
+ // Have the BitcodeReader dtor delete 'Buffer'.
+ R->setBufferOwned(true);
+ return M;
+}
+
+/// ParseBitcodeFile - Read the specified bitcode file, returning the module.
+/// If an error occurs, return null and fill in *ErrMsg if non-null.
+Module *llvm::ParseBitcodeFile(MemoryBuffer *Buffer, LLVMContext& Context,
+ std::string *ErrMsg){
+ Module *M = getLazyBitcodeModule(Buffer, Context, ErrMsg);
+ if (!M) return 0;
+
+ // Don't let the BitcodeReader dtor delete 'Buffer', regardless of whether
+ // there was an error.
+ static_cast<BitcodeReader*>(M->getMaterializer())->setBufferOwned(false);
+
+ // Read in the entire module, and destroy the BitcodeReader.
+ if (M->MaterializeAllPermanently(ErrMsg)) {
+ delete M;
+ 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;
+}
diff --git a/bcinfo/BitReader_3_0/BitcodeReader.h b/bcinfo/BitReader_3_0/BitcodeReader.h
new file mode 100644
index 0000000..6e6118c
--- /dev/null
+++ b/bcinfo/BitReader_3_0/BitcodeReader.h
@@ -0,0 +1,278 @@
+//===- BitcodeReader.h - Internal BitcodeReader impl ------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header defines the BitcodeReader class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef BITCODE_READER_H
+#define BITCODE_READER_H
+
+#include "llvm/GVMaterializer.h"
+#include "llvm/Attributes.h"
+#include "llvm/Type.h"
+#include "llvm/OperandTraits.h"
+#include "llvm/Bitcode/BitstreamReader.h"
+#include "llvm/Bitcode/LLVMBitCodes.h"
+#include "llvm/Support/ValueHandle.h"
+#include "llvm/ADT/DenseMap.h"
+#include <vector>
+
+namespace llvm {
+ class MemoryBuffer;
+ class LLVMContext;
+
+//===----------------------------------------------------------------------===//
+// BitcodeReaderValueList Class
+//===----------------------------------------------------------------------===//
+
+class BitcodeReaderValueList {
+ std::vector<WeakVH> ValuePtrs;
+
+ /// ResolveConstants - As we resolve forward-referenced constants, we add
+ /// information about them to this vector. This allows us to resolve them in
+ /// bulk instead of resolving each reference at a time. See the code in
+ /// ResolveConstantForwardRefs for more information about this.
+ ///
+ /// The key of this vector is the placeholder constant, the value is the slot
+ /// number that holds the resolved value.
+ typedef std::vector<std::pair<Constant*, unsigned> > ResolveConstantsTy;
+ ResolveConstantsTy ResolveConstants;
+ LLVMContext &Context;
+public:
+ BitcodeReaderValueList(LLVMContext &C) : Context(C) {}
+ ~BitcodeReaderValueList() {
+ assert(ResolveConstants.empty() && "Constants not resolved?");
+ }
+
+ // vector compatibility methods
+ unsigned size() const { return ValuePtrs.size(); }
+ void resize(unsigned N) { ValuePtrs.resize(N); }
+ void push_back(Value *V) {
+ ValuePtrs.push_back(V);
+ }
+
+ void clear() {
+ assert(ResolveConstants.empty() && "Constants not resolved?");
+ ValuePtrs.clear();
+ }
+
+ Value *operator[](unsigned i) const {
+ assert(i < ValuePtrs.size());
+ return ValuePtrs[i];
+ }
+
+ Value *back() const { return ValuePtrs.back(); }
+ void pop_back() { ValuePtrs.pop_back(); }
+ bool empty() const { return ValuePtrs.empty(); }
+ void shrinkTo(unsigned N) {
+ assert(N <= size() && "Invalid shrinkTo request!");
+ ValuePtrs.resize(N);
+ }
+
+ Constant *getConstantFwdRef(unsigned Idx, Type *Ty);
+ Value *getValueFwdRef(unsigned Idx, Type *Ty);
+
+ void AssignValue(Value *V, unsigned Idx);
+
+ /// ResolveConstantForwardRefs - Once all constants are read, this method bulk
+ /// resolves any forward references.
+ void ResolveConstantForwardRefs();
+};
+
+
+//===----------------------------------------------------------------------===//
+// BitcodeReaderMDValueList Class
+//===----------------------------------------------------------------------===//
+
+class BitcodeReaderMDValueList {
+ std::vector<WeakVH> MDValuePtrs;
+
+ LLVMContext &Context;
+public:
+ BitcodeReaderMDValueList(LLVMContext& C) : Context(C) {}
+
+ // vector compatibility methods
+ unsigned size() const { return MDValuePtrs.size(); }
+ void resize(unsigned N) { MDValuePtrs.resize(N); }
+ void push_back(Value *V) { MDValuePtrs.push_back(V); }
+ void clear() { MDValuePtrs.clear(); }
+ Value *back() const { return MDValuePtrs.back(); }
+ void pop_back() { MDValuePtrs.pop_back(); }
+ bool empty() const { return MDValuePtrs.empty(); }
+
+ Value *operator[](unsigned i) const {
+ assert(i < MDValuePtrs.size());
+ return MDValuePtrs[i];
+ }
+
+ void shrinkTo(unsigned N) {
+ assert(N <= size() && "Invalid shrinkTo request!");
+ MDValuePtrs.resize(N);
+ }
+
+ Value *getValueFwdRef(unsigned Idx);
+ void AssignValue(Value *V, unsigned Idx);
+};
+
+class BitcodeReader : public GVMaterializer {
+ LLVMContext &Context;
+ Module *TheModule;
+ MemoryBuffer *Buffer;
+ bool BufferOwned;
+ BitstreamReader StreamFile;
+ BitstreamCursor Stream;
+
+ const char *ErrorString;
+
+ std::vector<Type*> TypeList;
+ BitcodeReaderValueList ValueList;
+ BitcodeReaderMDValueList MDValueList;
+ SmallVector<Instruction *, 64> InstructionList;
+
+ std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInits;
+ std::vector<std::pair<GlobalAlias*, unsigned> > AliasInits;
+
+ /// MAttributes - The set of attributes by index. Index zero in the
+ /// file is for null, and is thus not represented here. As such all indices
+ /// are off by one.
+ std::vector<AttrListPtr> MAttributes;
+
+ /// FunctionBBs - While parsing a function body, this is a list of the basic
+ /// blocks for the function.
+ std::vector<BasicBlock*> FunctionBBs;
+
+ // When reading the module header, this list is populated with functions that
+ // have bodies later in the file.
+ std::vector<Function*> FunctionsWithBodies;
+
+ // When intrinsic functions are encountered which require upgrading they are
+ // stored here with their replacement function.
+ typedef std::vector<std::pair<Function*, Function*> > UpgradedIntrinsicMap;
+ UpgradedIntrinsicMap UpgradedIntrinsics;
+
+ // Map the bitcode's custom MDKind ID to the Module's MDKind ID.
+ DenseMap<unsigned, unsigned> MDKindMap;
+
+ // After the module header has been read, the FunctionsWithBodies list is
+ // reversed. This keeps track of whether we've done this yet.
+ bool HasReversedFunctionsWithBodies;
+
+ /// DeferredFunctionInfo - When function bodies are initially scanned, this
+ /// map contains info about where to find deferred function body in the
+ /// stream.
+ DenseMap<Function*, uint64_t> DeferredFunctionInfo;
+
+ /// BlockAddrFwdRefs - These are blockaddr references to basic blocks. These
+ /// are resolved lazily when functions are loaded.
+ typedef std::pair<unsigned, GlobalVariable*> BlockAddrRefTy;
+ DenseMap<Function*, std::vector<BlockAddrRefTy> > BlockAddrFwdRefs;
+
+public:
+ explicit BitcodeReader(MemoryBuffer *buffer, LLVMContext &C)
+ : Context(C), TheModule(0), Buffer(buffer), BufferOwned(false),
+ ErrorString(0), ValueList(C), MDValueList(C) {
+ HasReversedFunctionsWithBodies = false;
+ }
+ ~BitcodeReader() {
+ FreeState();
+ }
+
+ void FreeState();
+
+ /// setBufferOwned - If this is true, the reader will destroy the MemoryBuffer
+ /// when the reader is destroyed.
+ void setBufferOwned(bool Owned) { BufferOwned = Owned; }
+
+ virtual bool isMaterializable(const GlobalValue *GV) const;
+ virtual bool isDematerializable(const GlobalValue *GV) const;
+ virtual bool Materialize(GlobalValue *GV, std::string *ErrInfo = 0);
+ virtual bool MaterializeModule(Module *M, std::string *ErrInfo = 0);
+ virtual void Dematerialize(GlobalValue *GV);
+
+ bool Error(const char *Str) {
+ ErrorString = Str;
+ return true;
+ }
+ const char *getErrorString() const { return ErrorString; }
+
+ /// @brief Main interface to parsing a bitcode buffer.
+ /// @returns true if an error occurred.
+ bool ParseBitcodeInto(Module *M);
+
+ /// @brief Cheap mechanism to just extract module triple
+ /// @returns true if an error occurred.
+ bool ParseTriple(std::string &Triple);
+private:
+ Type *getTypeByID(unsigned ID);
+ Type *getTypeByIDOrNull(unsigned ID);
+ Value *getFnValueByID(unsigned ID, Type *Ty) {
+ if (Ty && Ty->isMetadataTy())
+ return MDValueList.getValueFwdRef(ID);
+ return ValueList.getValueFwdRef(ID, Ty);
+ }
+ BasicBlock *getBasicBlock(unsigned ID) const {
+ if (ID >= FunctionBBs.size()) return 0; // Invalid ID
+ return FunctionBBs[ID];
+ }
+ AttrListPtr getAttributes(unsigned i) const {
+ if (i-1 < MAttributes.size())
+ return MAttributes[i-1];
+ return AttrListPtr();
+ }
+
+ /// getValueTypePair - Read a value/type pair out of the specified record from
+ /// slot 'Slot'. Increment Slot past the number of slots used in the record.
+ /// Return true on failure.
+ bool getValueTypePair(SmallVector<uint64_t, 64> &Record, unsigned &Slot,
+ unsigned InstNum, Value *&ResVal) {
+ if (Slot == Record.size()) return true;
+ unsigned ValNo = (unsigned)Record[Slot++];
+ if (ValNo < InstNum) {
+ // If this is not a forward reference, just return the value we already
+ // have.
+ ResVal = getFnValueByID(ValNo, 0);
+ return ResVal == 0;
+ } else if (Slot == Record.size()) {
+ return true;
+ }
+
+ unsigned TypeNo = (unsigned)Record[Slot++];
+ ResVal = getFnValueByID(ValNo, getTypeByID(TypeNo));
+ return ResVal == 0;
+ }
+ bool getValue(SmallVector<uint64_t, 64> &Record, unsigned &Slot,
+ Type *Ty, Value *&ResVal) {
+ if (Slot == Record.size()) return true;
+ unsigned ValNo = (unsigned)Record[Slot++];
+ ResVal = getFnValueByID(ValNo, Ty);
+ return ResVal == 0;
+ }
+
+
+ bool ParseModule();
+ bool ParseAttributeBlock();
+ bool ParseTypeTable();
+ bool ParseOldTypeTable(); // FIXME: Remove in LLVM 3.1
+ bool ParseTypeTableBody();
+
+ bool ParseOldTypeSymbolTable(); // FIXME: Remove in LLVM 3.1
+ bool ParseValueSymbolTable();
+ bool ParseConstants();
+ bool RememberAndSkipFunctionBody();
+ bool ParseFunctionBody(Function *F);
+ bool ResolveGlobalAndAliasInits();
+ bool ParseMetadata();
+ bool ParseMetadataAttachment();
+ bool ParseModuleTriple(std::string &Triple);
+};
+
+} // End llvm namespace
+
+#endif
diff --git a/bcinfo/BitReader_3_0/CMakeLists.txt b/bcinfo/BitReader_3_0/CMakeLists.txt
new file mode 100644
index 0000000..37bebc4
--- /dev/null
+++ b/bcinfo/BitReader_3_0/CMakeLists.txt
@@ -0,0 +1,9 @@
+add_llvm_library(LLVMBitReader
+ BitReader.cpp
+ BitcodeReader.cpp
+ )
+
+add_llvm_library_dependencies(LLVMBitReader
+ LLVMCore
+ LLVMSupport
+ )
diff --git a/bcinfo/BitReader_3_0/LLVMBuild.txt b/bcinfo/BitReader_3_0/LLVMBuild.txt
new file mode 100644
index 0000000..948b335
--- /dev/null
+++ b/bcinfo/BitReader_3_0/LLVMBuild.txt
@@ -0,0 +1,23 @@
+;===- ./lib/Bitcode/Reader/LLVMBuild.txt -----------------------*- Conf -*--===;
+;
+; The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+; http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = BitReader
+parent = Bitcode
+required_libraries = Core Support
+
diff --git a/bcinfo/BitReader_3_0/Makefile b/bcinfo/BitReader_3_0/Makefile
new file mode 100644
index 0000000..59af8d5
--- /dev/null
+++ b/bcinfo/BitReader_3_0/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Bitcode/Reader/Makefile -------------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../../..
+LIBRARYNAME = LLVMBitReader
+BUILD_ARCHIVE = 1
+
+include $(LEVEL)/Makefile.common
+