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eliminate internal length fields from record. Records already know their

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total length


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36752 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-05-04 19:11:41 +00:00
parent 1d33bb3108
commit 15e6d170e8
2 changed files with 48 additions and 48 deletions
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73
lib/Bitcode/Reader/BitcodeReader.cpp
View File

@ -36,11 +36,11 @@ BitcodeReader::~BitcodeReader() {
template<typename StrTy>
static bool ConvertToString(SmallVector<uint64_t, 64> &Record, unsigned Idx,
StrTy &Result) {
if (Record.size() < Idx+1 || Record.size() < Record[Idx]+Idx+1)
if (Idx > Record.size())
return true;
for (unsigned i = 0, e = Record[Idx]; i != e; ++i)
Result += (char)Record[Idx+i+1];
for (unsigned i = Idx, e = Record.size(); i != e; ++i)
Result += (char)Record[i];
return false;
}
@ -313,23 +313,23 @@ bool BitcodeReader::ParseTypeTable() {
ResultTy = PointerType::get(getTypeByID(Record[0], true));
break;
case bitc::TYPE_CODE_FUNCTION: {
// FUNCTION: [vararg, attrid, retty, #pararms, paramty N]
if (Record.size() < 4 || Record.size() < Record[3]+4)
// FUNCTION: [vararg, attrid, retty, paramty x N]
if (Record.size() < 3)
return Error("Invalid FUNCTION type record");
std::vector<const Type*> ArgTys;
for (unsigned i = 0, e = Record[3]; i != e; ++i)
ArgTys.push_back(getTypeByID(Record[4+i], true));
for (unsigned i = 3, e = Record.size(); i != e; ++i)
ArgTys.push_back(getTypeByID(Record[i], true));
ResultTy = FunctionType::get(getTypeByID(Record[2], true), ArgTys,
Record[0], getParamAttrs(Record[1]));
break;
}
case bitc::TYPE_CODE_STRUCT: { // STRUCT: [ispacked, #elts, eltty x N]
if (Record.size() < 2 || Record.size() < Record[1]+2)
case bitc::TYPE_CODE_STRUCT: { // STRUCT: [ispacked, eltty x N]
if (Record.size() < 2)
return Error("Invalid STRUCT type record");
std::vector<const Type*> EltTys;
for (unsigned i = 0, e = Record[1]; i != e; ++i)
EltTys.push_back(getTypeByID(Record[2+i], true));
for (unsigned i = 1, e = Record.size(); i != e; ++i)
EltTys.push_back(getTypeByID(Record[i], true));
ResultTy = StructType::get(EltTys, Record[0]);
break;
}
@ -411,7 +411,7 @@ bool BitcodeReader::ParseTypeSymbolTable() {
switch (Stream.ReadRecord(Code, Record)) {
default: // Default behavior: unknown type.
break;
case bitc::TST_CODE_ENTRY: // TST_ENTRY: [typeid, namelen, namechar x N]
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];
@ -458,7 +458,7 @@ bool BitcodeReader::ParseValueSymbolTable() {
switch (Stream.ReadRecord(Code, Record)) {
default: // Default behavior: unknown type.
break;
case bitc::VST_CODE_ENTRY: { // VST_ENTRY: [valueid, namelen, namechar x N]
case bitc::VST_CODE_ENTRY: { // VST_ENTRY: [valueid, namechar x N]
if (ConvertToString(Record, 1, ValueName))
return Error("Invalid TST_ENTRY record");
unsigned ValueID = Record[0];
@ -591,16 +591,15 @@ bool BitcodeReader::ParseConstants() {
return Error("Invalid CST_INTEGER record");
V = ConstantInt::get(CurTy, DecodeSignRotatedValue(Record[0]));
break;
case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n, n x intval]
if (!isa<IntegerType>(CurTy) || Record.empty() ||
Record.size() < Record[0]+1)
case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval]
if (!isa<IntegerType>(CurTy) || Record.empty())
return Error("Invalid WIDE_INTEGER record");
unsigned NumWords = Record[0];
unsigned NumWords = Record.size();
SmallVector<uint64_t, 8> Words;
Words.resize(NumWords);
for (unsigned i = 0; i != NumWords; ++i)
Words[i] = DecodeSignRotatedValue(Record[i+1]);
Words[i] = DecodeSignRotatedValue(Record[i]);
V = ConstantInt::get(APInt(cast<IntegerType>(CurTy)->getBitWidth(),
NumWords, &Words[0]));
break;
@ -616,27 +615,27 @@ bool BitcodeReader::ParseConstants() {
V = UndefValue::get(CurTy);
break;
case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n, n x value number]
if (Record.empty() || Record.size() < Record[0]+1)
case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number]
if (Record.empty())
return Error("Invalid CST_AGGREGATE record");
unsigned Size = Record[0];
unsigned Size = Record.size();
std::vector<Constant*> Elts;
if (const StructType *STy = dyn_cast<StructType>(CurTy)) {
for (unsigned i = 0; i != Size; ++i)
Elts.push_back(ValueList.getConstantFwdRef(Record[i+1],
Elts.push_back(ValueList.getConstantFwdRef(Record[i],
STy->getElementType(i)));
V = ConstantStruct::get(STy, Elts);
} else if (const ArrayType *ATy = dyn_cast<ArrayType>(CurTy)) {
const Type *EltTy = ATy->getElementType();
for (unsigned i = 0; i != Size; ++i)
Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], EltTy));
Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy));
V = ConstantArray::get(ATy, Elts);
} else if (const VectorType *VTy = dyn_cast<VectorType>(CurTy)) {
const Type *EltTy = VTy->getElementType();
for (unsigned i = 0; i != Size; ++i)
Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], EltTy));
Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy));
V = ConstantVector::get(Elts);
} else {
V = UndefValue::get(CurTy);
@ -669,9 +668,9 @@ bool BitcodeReader::ParseConstants() {
break;
}
case bitc::CST_CODE_CE_GEP: { // CE_GEP: [n x operands]
if ((Record.size() & 1) == 0) return Error("Invalid CE_GEP record");
if (Record.size() & 1) return Error("Invalid CE_GEP record");
SmallVector<Constant*, 16> Elts;
for (unsigned i = 1, e = Record.size(); i != e; i += 2) {
for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
const Type *ElTy = getTypeByID(Record[i]);
if (!ElTy) return Error("Invalid CE_GEP record");
Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], ElTy));
@ -856,35 +855,35 @@ bool BitcodeReader::ParseModule(const std::string &ModuleID) {
if (Record[0] != 0)
return Error("Unknown bitstream version!");
break;
case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strlen, strchr x N]
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: [strlen, strchr x N]
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: [strlen, strchr x N]
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: [strlen, strchr x N]
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: [strlen, strchr x N]
case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N]
std::string S;
if (ConvertToString(Record, 0, S))
return Error("Invalid MODULE_CODE_SECTIONNAME record");
@ -1156,7 +1155,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
I = CastInst::create((Instruction::CastOps)Opc, Op, ResTy);
break;
}
case bitc::FUNC_CODE_INST_GEP: { // GEP: [n, n x operands]
case bitc::FUNC_CODE_INST_GEP: { // GEP: [n x operands]
if (Record.size() < 2 || (Record.size() & 1))
return Error("Invalid GEP record");
const Type *OpTy = getTypeByID(Record[0]);
@ -1354,17 +1353,17 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
I = new UnreachableInst();
break;
case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, #ops, val0,bb0, ...]
if (Record.size() < 2 || Record.size() < 2+Record[1] || (Record[1]&1))
if (Record.size() < 1 || ((Record.size()-1)&1))
return Error("Invalid PHI record");
const Type *Ty = getTypeByID(Record[0]);
if (!Ty) return Error("Invalid PHI record");
PHINode *PN = new PHINode(Ty);
PN->reserveOperandSpace(Record[1]);
PN->reserveOperandSpace(Record.size()-1);
for (unsigned i = 0, e = Record[1]; i != e; i += 2) {
Value *V = getFnValueByID(Record[2+i], Ty);
BasicBlock *BB = getBasicBlock(Record[3+i]);
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);
}

23
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -72,8 +72,7 @@ static void WriteStringRecord(unsigned Code, const std::string &Str,
unsigned AbbrevToUse, BitstreamWriter &Stream) {
SmallVector<unsigned, 64> Vals;
// Code: [strlen, strchar x N]
Vals.push_back(Str.size());
// Code: [strchar x N]
for (unsigned i = 0, e = Str.size(); i != e; ++i)
Vals.push_back(Str[i]);
@ -150,7 +149,6 @@ static void WriteTypeTable(const ValueEnumerator &VE, BitstreamWriter &Stream) {
TypeVals.push_back(FT->isVarArg());
TypeVals.push_back(VE.getParamAttrID(FT->getParamAttrs()));
TypeVals.push_back(VE.getTypeID(FT->getReturnType()));
TypeVals.push_back(FT->getNumParams());
for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i)
TypeVals.push_back(VE.getTypeID(FT->getParamType(i)));
break;
@ -160,8 +158,7 @@ static void WriteTypeTable(const ValueEnumerator &VE, BitstreamWriter &Stream) {
// STRUCT: [ispacked, #elts, eltty x N]
Code = bitc::TYPE_CODE_STRUCT;
TypeVals.push_back(ST->isPacked());
TypeVals.push_back(ST->getNumElements());
// Output all of the element types...
// Output all of the element types.
for (StructType::element_iterator I = ST->element_begin(),
E = ST->element_end(); I != E; ++I)
TypeVals.push_back(VE.getTypeID(*I));
@ -399,7 +396,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
// So, we only write the number of active words.
unsigned NWords = IV->getValue().getActiveWords();
const uint64_t *RawWords = IV->getValue().getRawData();
Record.push_back(NWords);
for (unsigned i = 0; i != NWords; ++i) {
int64_t V = RawWords[i];
if (V >= 0)
@ -420,7 +416,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
} else if (isa<ConstantArray>(C) || isa<ConstantStruct>(V) ||
isa<ConstantVector>(V)) {
Code = bitc::CST_CODE_AGGREGATE;
Record.push_back(C->getNumOperands());
for (unsigned i = 0, e = C->getNumOperands(); i != e; ++i)
Record.push_back(VE.getValueID(C->getOperand(i)));
} else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
@ -441,7 +436,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
break;
case Instruction::GetElementPtr:
Code = bitc::CST_CODE_CE_GEP;
Record.push_back(CE->getNumOperands());
for (unsigned i = 0, e = CE->getNumOperands(); i != e; ++i) {
Record.push_back(VE.getTypeID(C->getOperand(i)->getType()));
Record.push_back(VE.getValueID(C->getOperand(i)));
@ -627,7 +621,6 @@ static void WriteInstruction(const Instruction &I, ValueEnumerator &VE,
case Instruction::PHI:
Code = bitc::FUNC_CODE_INST_PHI;
Vals.push_back(VE.getTypeID(I.getType()));
Vals.push_back(I.getNumOperands());
for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i)
Vals.push_back(VE.getValueID(I.getOperand(i)));
break;
@ -710,6 +703,16 @@ static void WriteValueSymbolTable(const ValueSymbolTable &VST,
if (VST.empty()) return;
Stream.EnterSubblock(bitc::VALUE_SYMTAB_BLOCK_ID, 3);
#if 0
BitCodeAbbrev *Abbv = new BitCodeAbbrev();
Abbv->Add(BitCodeAbbrevOp(bitc::VST_ENTRY));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::FixedWidth,
Log2_32_Ceil(MaxGlobalType+1)));
// Don't bother emitting vis + thread local.
SimpleGVarAbbrev = Stream.EmitAbbrev(Abbv);
#endif
// FIXME: Set up the abbrev, we know how many values there are!
// FIXME: We know if the type names can use 7-bit ascii.
SmallVector<unsigned, 64> NameVals;
@ -728,7 +731,6 @@ static void WriteValueSymbolTable(const ValueSymbolTable &VST,
}
NameVals.push_back(VE.getValueID(SI->getValue()));
NameVals.push_back(SI->getKeyLength());
for (const char *P = SI->getKeyData(),
*E = SI->getKeyData()+SI->getKeyLength(); P != E; ++P)
NameVals.push_back((unsigned char)*P);
@ -794,7 +796,6 @@ static void WriteTypeSymbolTable(const TypeSymbolTable &TST,
NameVals.push_back(VE.getTypeID(TI->second));
const std::string &Str = TI->first;
NameVals.push_back(Str.size());
for (unsigned i = 0, e = Str.size(); i != e; ++i)
NameVals.push_back(Str[i]);