[llvm-commits] CVS: llvm/lib/Bytecode/Reader/ReadInst.cpp ReaderInternals.h
Misha Brukman
brukman at cs.uiuc.edu
Tue Sep 23 11:18:02 PDT 2003
Changes in directory llvm/lib/Bytecode/Reader:
ReadInst.cpp updated: 1.51 -> 1.52
ReaderInternals.h updated: 1.43 -> 1.44
---
Log message:
Stop returning bool and pass Instruction by reference;
return std::auto_ptr and use exceptions
---
Diffs of the changes:
Index: llvm/lib/Bytecode/Reader/ReadInst.cpp
diff -u llvm/lib/Bytecode/Reader/ReadInst.cpp:1.51 llvm/lib/Bytecode/Reader/ReadInst.cpp:1.52
--- llvm/lib/Bytecode/Reader/ReadInst.cpp:1.51 Thu Sep 11 17:31:21 2003
+++ llvm/lib/Bytecode/Reader/ReadInst.cpp Tue Sep 23 11:17:50 2003
@@ -17,30 +17,32 @@
#include "llvm/iPHINode.h"
#include "llvm/iOther.h"
-bool BytecodeParser::ParseRawInst(const unsigned char *&Buf,
- const unsigned char *EndBuf,
- RawInst &Result) {
+std::auto_ptr<RawInst>
+BytecodeParser::ParseRawInst(const unsigned char *&Buf,
+ const unsigned char *EndBuf) {
unsigned Op, Typ;
- if (read(Buf, EndBuf, Op)) return true;
+ std::auto_ptr<RawInst> Result = std::auto_ptr<RawInst>(new RawInst());
+ if (read(Buf, EndBuf, Op))
+ throw std::string("Error reading from buffer.");
// bits Instruction format: Common to all formats
// --------------------------
// 01-00: Opcode type, fixed to 1.
// 07-02: Opcode
- Result.NumOperands = (Op >> 0) & 03;
- Result.Opcode = (Op >> 2) & 63;
+ Result->NumOperands = (Op >> 0) & 03;
+ Result->Opcode = (Op >> 2) & 63;
- switch (Result.NumOperands) {
+ switch (Result->NumOperands) {
case 1:
// bits Instruction format:
// --------------------------
// 19-08: Resulting type plane
// 31-20: Operand #1 (if set to (2^12-1), then zero operands)
//
- Result.Ty = getType((Op >> 8) & 4095);
- Result.Arg1 = (Op >> 20) & 4095;
- if (Result.Arg1 == 4095) // Handle special encoding for 0 operands...
- Result.NumOperands = 0;
+ Result->Ty = getType((Op >> 8) & 4095);
+ Result->Arg1 = (Op >> 20) & 4095;
+ if (Result->Arg1 == 4095) // Handle special encoding for 0 operands...
+ Result->NumOperands = 0;
break;
case 2:
// bits Instruction format:
@@ -49,9 +51,9 @@
// 23-16: Operand #1
// 31-24: Operand #2
//
- Result.Ty = getType((Op >> 8) & 255);
- Result.Arg1 = (Op >> 16) & 255;
- Result.Arg2 = (Op >> 24) & 255;
+ Result->Ty = getType((Op >> 8) & 255);
+ Result->Arg1 = (Op >> 16) & 255;
+ Result->Arg2 = (Op >> 24) & 255;
break;
case 3:
// bits Instruction format:
@@ -61,112 +63,121 @@
// 25-20: Operand #2
// 31-26: Operand #3
//
- Result.Ty = getType((Op >> 8) & 63);
- Result.Arg1 = (Op >> 14) & 63;
- Result.Arg2 = (Op >> 20) & 63;
- Result.Arg3 = (Op >> 26) & 63;
+ Result->Ty = getType((Op >> 8) & 63);
+ Result->Arg1 = (Op >> 14) & 63;
+ Result->Arg2 = (Op >> 20) & 63;
+ Result->Arg3 = (Op >> 26) & 63;
break;
case 0:
Buf -= 4; // Hrm, try this again...
- if (read_vbr(Buf, EndBuf, Result.Opcode)) return true;
- Result.Opcode >>= 2;
- if (read_vbr(Buf, EndBuf, Typ)) return true;
- Result.Ty = getType(Typ);
- if (Result.Ty == 0) return true;
- if (read_vbr(Buf, EndBuf, Result.NumOperands)) return true;
+ if (read_vbr(Buf, EndBuf, Result->Opcode))
+ throw std::string("Error reading from buffer.");
+ Result->Opcode >>= 2;
+ if (read_vbr(Buf, EndBuf, Typ))
+ throw std::string("Error reading from buffer.");
+ Result->Ty = getType(Typ);
+ if (Result->Ty == 0)
+ throw std::string("Invalid type read in instruction.");
+ if (read_vbr(Buf, EndBuf, Result->NumOperands))
+ throw std::string("Error reading from buffer.");
- switch (Result.NumOperands) {
+ switch (Result->NumOperands) {
case 0:
- std::cerr << "Zero Arg instr found!\n";
- return true; // This encoding is invalid!
+ throw std::string("Zero-argument instruction found; this is invalid.");
case 1:
- if (read_vbr(Buf, EndBuf, Result.Arg1)) return true;
+ if (read_vbr(Buf, EndBuf, Result->Arg1))
+ throw std::string("Error reading from buffer");
break;
case 2:
- if (read_vbr(Buf, EndBuf, Result.Arg1) ||
- read_vbr(Buf, EndBuf, Result.Arg2)) return true;
+ if (read_vbr(Buf, EndBuf, Result->Arg1) ||
+ read_vbr(Buf, EndBuf, Result->Arg2))
+ throw std::string("Error reading from buffer");
break;
case 3:
- if (read_vbr(Buf, EndBuf, Result.Arg1) ||
- read_vbr(Buf, EndBuf, Result.Arg2) ||
- read_vbr(Buf, EndBuf, Result.Arg3)) return true;
+ if (read_vbr(Buf, EndBuf, Result->Arg1) ||
+ read_vbr(Buf, EndBuf, Result->Arg2) ||
+ read_vbr(Buf, EndBuf, Result->Arg3))
+ throw std::string("Error reading from buffer");
break;
default:
- if (read_vbr(Buf, EndBuf, Result.Arg1) ||
- read_vbr(Buf, EndBuf, Result.Arg2)) return true;
+ if (read_vbr(Buf, EndBuf, Result->Arg1) ||
+ read_vbr(Buf, EndBuf, Result->Arg2))
+ throw std::string("Error reading from buffer");
// Allocate a vector to hold arguments 3, 4, 5, 6 ...
- Result.VarArgs = new std::vector<unsigned>(Result.NumOperands-2);
- for (unsigned a = 0; a < Result.NumOperands-2; a++)
- if (read_vbr(Buf, EndBuf, (*Result.VarArgs)[a])) return true;
+ Result->VarArgs = new std::vector<unsigned>(Result->NumOperands-2);
+ for (unsigned a = 0; a < Result->NumOperands-2; a++)
+ if (read_vbr(Buf, EndBuf, (*Result->VarArgs)[a]))
+ throw std::string("Error reading from buffer");
+
break;
}
- if (align32(Buf, EndBuf)) return true;
+ if (align32(Buf, EndBuf))
+ throw std::string("Unaligned bytecode buffer.");
break;
}
#if 0
- std::cerr << "NO: " << Result.NumOperands << " opcode: " << Result.Opcode
- << " Ty: " << Result.Ty->getDescription() << " arg1: "<< Result.Arg1
- << " arg2: " << Result.Arg2 << " arg3: " << Result.Arg3 << "\n";
+ std::cerr << "NO: " << Result->NumOperands << " opcode: " << Result->Opcode
+ << " Ty: "<< Result->Ty->getDescription()<< " arg1: "<< Result->Arg1
+ << " arg2: " << Result->Arg2 << " arg3: " << Result->Arg3 << "\n";
#endif
- return false;
+ return Result;
}
bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
const unsigned char *EndBuf,
Instruction *&Res) {
- RawInst Raw;
- if (ParseRawInst(Buf, EndBuf, Raw))
- return true;
-
- if (Raw.Opcode >= Instruction::BinaryOpsBegin &&
- Raw.Opcode < Instruction::BinaryOpsEnd && Raw.NumOperands == 2) {
- Res = BinaryOperator::create((Instruction::BinaryOps)Raw.Opcode,
- getValue(Raw.Ty, Raw.Arg1),
- getValue(Raw.Ty, Raw.Arg2));
+ std::auto_ptr<RawInst> Raw = ParseRawInst(Buf, EndBuf);
+
+ if (Raw->Opcode >= Instruction::BinaryOpsBegin &&
+ Raw->Opcode < Instruction::BinaryOpsEnd && Raw->NumOperands == 2) {
+ Res = BinaryOperator::create((Instruction::BinaryOps)Raw->Opcode,
+ getValue(Raw->Ty, Raw->Arg1),
+ getValue(Raw->Ty, Raw->Arg2));
return false;
- }
+ }
Value *V;
- switch (Raw.Opcode) {
+ switch (Raw->Opcode) {
case Instruction::VarArg:
case Instruction::Cast: {
- V = getValue(Raw.Ty, Raw.Arg1);
- const Type *Ty = getType(Raw.Arg2);
+ V = getValue(Raw->Ty, Raw->Arg1);
+ const Type *Ty = getType(Raw->Arg2);
if (V == 0 || Ty == 0) { std::cerr << "Invalid cast!\n"; return true; }
- if (Raw.Opcode == Instruction::Cast)
+ if (Raw->Opcode == Instruction::Cast)
Res = new CastInst(V, Ty);
else
Res = new VarArgInst(V, Ty);
return false;
}
case Instruction::PHINode: {
- PHINode *PN = new PHINode(Raw.Ty);
- switch (Raw.NumOperands) {
+ PHINode *PN = new PHINode(Raw->Ty);
+ switch (Raw->NumOperands) {
case 0:
case 1:
case 3: std::cerr << "Invalid phi node encountered!\n";
delete PN;
return true;
- case 2: PN->addIncoming(getValue(Raw.Ty, Raw.Arg1),
- cast<BasicBlock>(getValue(Type::LabelTy,Raw.Arg2)));
+ case 2: PN->addIncoming(getValue(Raw->Ty, Raw->Arg1),
+ cast<BasicBlock>(getValue(Type::LabelTy,
+ Raw->Arg2)));
break;
default:
- PN->addIncoming(getValue(Raw.Ty, Raw.Arg1),
- cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg2)));
- if (Raw.VarArgs->size() & 1) {
+ PN->addIncoming(getValue(Raw->Ty, Raw->Arg1),
+ cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2)));
+ if (Raw->VarArgs->size() & 1) {
std::cerr << "PHI Node with ODD number of arguments!\n";
delete PN;
return true;
} else {
- std::vector<unsigned> &args = *Raw.VarArgs;
+ std::vector<unsigned> &args = *Raw->VarArgs;
for (unsigned i = 0; i < args.size(); i+=2)
- PN->addIncoming(getValue(Raw.Ty, args[i]),
+ PN->addIncoming(getValue(Raw->Ty, args[i]),
cast<BasicBlock>(getValue(Type::LabelTy, args[i+1])));
}
- delete Raw.VarArgs;
+ delete Raw->VarArgs;
break;
}
Res = PN;
@@ -175,54 +186,54 @@
case Instruction::Shl:
case Instruction::Shr:
- Res = new ShiftInst((Instruction::OtherOps)Raw.Opcode,
- getValue(Raw.Ty, Raw.Arg1),
- getValue(Type::UByteTy, Raw.Arg2));
+ Res = new ShiftInst((Instruction::OtherOps)Raw->Opcode,
+ getValue(Raw->Ty, Raw->Arg1),
+ getValue(Type::UByteTy, Raw->Arg2));
return false;
case Instruction::Ret:
- if (Raw.NumOperands == 0) {
+ if (Raw->NumOperands == 0) {
Res = new ReturnInst(); return false;
- } else if (Raw.NumOperands == 1) {
- Res = new ReturnInst(getValue(Raw.Ty, Raw.Arg1)); return false;
+ } else if (Raw->NumOperands == 1) {
+ Res = new ReturnInst(getValue(Raw->Ty, Raw->Arg1)); return false;
}
break;
case Instruction::Br:
- if (Raw.NumOperands == 1) {
- Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg1)));
+ if (Raw->NumOperands == 1) {
+ Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTy,Raw->Arg1)));
return false;
- } else if (Raw.NumOperands == 3) {
- Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg1)),
- cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg2)),
- getValue(Type::BoolTy , Raw.Arg3));
+ } else if (Raw->NumOperands == 3) {
+ Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg1)),
+ cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2)),
+ getValue(Type::BoolTy , Raw->Arg3));
return false;
}
break;
case Instruction::Switch: {
SwitchInst *I =
- new SwitchInst(getValue(Raw.Ty, Raw.Arg1),
- cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg2)));
+ new SwitchInst(getValue(Raw->Ty, Raw->Arg1),
+ cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2)));
Res = I;
- if (Raw.NumOperands < 3) return false; // No destinations? Weird.
+ if (Raw->NumOperands < 3) return false; // No destinations? Weird.
- if (Raw.NumOperands == 3 || Raw.VarArgs->size() & 1) {
+ if (Raw->NumOperands == 3 || Raw->VarArgs->size() & 1) {
std::cerr << "Switch statement with odd number of arguments!\n";
delete I;
return true;
}
- std::vector<unsigned> &args = *Raw.VarArgs;
+ std::vector<unsigned> &args = *Raw->VarArgs;
for (unsigned i = 0; i < args.size(); i += 2)
- I->addCase(cast<Constant>(getValue(Raw.Ty, args[i])),
+ I->addCase(cast<Constant>(getValue(Raw->Ty, args[i])),
cast<BasicBlock>(getValue(Type::LabelTy, args[i+1])));
- delete Raw.VarArgs;
+ delete Raw->VarArgs;
return false;
}
case Instruction::Call: {
- Value *F = getValue(Raw.Ty, Raw.Arg1);
+ Value *F = getValue(Raw->Ty, Raw->Arg1);
if (F == 0) return true;
// Check to make sure we have a pointer to method type
@@ -237,30 +248,30 @@
if (!FTy->isVarArg()) {
FunctionType::ParamTypes::const_iterator It = PL.begin();
- switch (Raw.NumOperands) {
+ switch (Raw->NumOperands) {
case 0: std::cerr << "Invalid call instruction encountered!\n";
return true;
case 1: break;
- case 2: Params.push_back(getValue(*It++, Raw.Arg2)); break;
- case 3: Params.push_back(getValue(*It++, Raw.Arg2));
+ case 2: Params.push_back(getValue(*It++, Raw->Arg2)); break;
+ case 3: Params.push_back(getValue(*It++, Raw->Arg2));
if (It == PL.end()) return true;
- Params.push_back(getValue(*It++, Raw.Arg3)); break;
+ Params.push_back(getValue(*It++, Raw->Arg3)); break;
default:
- Params.push_back(getValue(*It++, Raw.Arg2));
+ Params.push_back(getValue(*It++, Raw->Arg2));
{
- std::vector<unsigned> &args = *Raw.VarArgs;
+ std::vector<unsigned> &args = *Raw->VarArgs;
for (unsigned i = 0; i < args.size(); i++) {
if (It == PL.end()) return true;
Params.push_back(getValue(*It++, args[i]));
if (Params.back() == 0) return true;
}
}
- delete Raw.VarArgs;
+ delete Raw->VarArgs;
}
if (It != PL.end()) return true;
} else {
- if (Raw.NumOperands > 2) {
- std::vector<unsigned> &args = *Raw.VarArgs;
+ if (Raw->NumOperands > 2) {
+ std::vector<unsigned> &args = *Raw->VarArgs;
if (args.size() < 1) return true;
if ((args.size() & 1) != 0)
@@ -274,7 +285,7 @@
if (V == 0) return true;
Params.push_back(V);
}
- delete Raw.VarArgs;
+ delete Raw->VarArgs;
}
}
@@ -282,7 +293,7 @@
return false;
}
case Instruction::Invoke: {
- Value *F = getValue(Raw.Ty, Raw.Arg1);
+ Value *F = getValue(Raw->Ty, Raw->Arg1);
if (F == 0) return true;
// Check to make sure we have a pointer to method type
@@ -293,16 +304,16 @@
std::vector<Value *> Params;
const FunctionType::ParamTypes &PL = FTy->getParamTypes();
- std::vector<unsigned> &args = *Raw.VarArgs;
+ std::vector<unsigned> &args = *Raw->VarArgs;
BasicBlock *Normal, *Except;
if (!FTy->isVarArg()) {
- if (Raw.NumOperands < 3) return true;
+ if (Raw->NumOperands < 3) return true;
- Normal = cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg2));
- if (Raw.NumOperands == 3)
- Except = cast<BasicBlock>(getValue(Type::LabelTy, Raw.Arg3));
+ Normal = cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2));
+ if (Raw->NumOperands == 3)
+ Except = cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg3));
else {
Except = cast<BasicBlock>(getValue(Type::LabelTy, args[0]));
@@ -329,105 +340,105 @@
}
}
- if (Raw.NumOperands > 3)
- delete Raw.VarArgs;
+ if (Raw->NumOperands > 3)
+ delete Raw->VarArgs;
Res = new InvokeInst(F, Normal, Except, Params);
return false;
}
case Instruction::Malloc:
- if (Raw.NumOperands > 2) return true;
- V = Raw.NumOperands ? getValue(Type::UIntTy, Raw.Arg1) : 0;
- if (const PointerType *PTy = dyn_cast<PointerType>(Raw.Ty))
+ if (Raw->NumOperands > 2) return true;
+ V = Raw->NumOperands ? getValue(Type::UIntTy, Raw->Arg1) : 0;
+ if (const PointerType *PTy = dyn_cast<PointerType>(Raw->Ty))
Res = new MallocInst(PTy->getElementType(), V);
else
return true;
return false;
case Instruction::Alloca:
- if (Raw.NumOperands > 2) return true;
- V = Raw.NumOperands ? getValue(Type::UIntTy, Raw.Arg1) : 0;
- if (const PointerType *PTy = dyn_cast<PointerType>(Raw.Ty))
+ if (Raw->NumOperands > 2) return true;
+ V = Raw->NumOperands ? getValue(Type::UIntTy, Raw->Arg1) : 0;
+ if (const PointerType *PTy = dyn_cast<PointerType>(Raw->Ty))
Res = new AllocaInst(PTy->getElementType(), V);
else
return true;
return false;
case Instruction::Free:
- V = getValue(Raw.Ty, Raw.Arg1);
+ V = getValue(Raw->Ty, Raw->Arg1);
if (!isa<PointerType>(V->getType())) return true;
Res = new FreeInst(V);
return false;
case Instruction::GetElementPtr: {
std::vector<Value*> Idx;
- if (!isa<PointerType>(Raw.Ty)) return true;
- const CompositeType *TopTy = dyn_cast<CompositeType>(Raw.Ty);
+ if (!isa<PointerType>(Raw->Ty)) return true;
+ const CompositeType *TopTy = dyn_cast<CompositeType>(Raw->Ty);
- switch (Raw.NumOperands) {
+ switch (Raw->NumOperands) {
case 0: std::cerr << "Invalid getelementptr encountered!\n"; return true;
case 1: break;
case 2:
if (!TopTy) return true;
- Idx.push_back(V = getValue(TopTy->getIndexType(), Raw.Arg2));
+ Idx.push_back(V = getValue(TopTy->getIndexType(), Raw->Arg2));
if (!V) return true;
break;
case 3: {
if (!TopTy) return true;
- Idx.push_back(V = getValue(TopTy->getIndexType(), Raw.Arg2));
+ Idx.push_back(V = getValue(TopTy->getIndexType(), Raw->Arg2));
if (!V) return true;
const Type *ETy = GetElementPtrInst::getIndexedType(TopTy, Idx, true);
const CompositeType *ElTy = dyn_cast_or_null<CompositeType>(ETy);
if (!ElTy) return true;
- Idx.push_back(V = getValue(ElTy->getIndexType(), Raw.Arg3));
+ Idx.push_back(V = getValue(ElTy->getIndexType(), Raw->Arg3));
if (!V) return true;
break;
}
default:
if (!TopTy) return true;
- Idx.push_back(V = getValue(TopTy->getIndexType(), Raw.Arg2));
+ Idx.push_back(V = getValue(TopTy->getIndexType(), Raw->Arg2));
if (!V) return true;
- std::vector<unsigned> &args = *Raw.VarArgs;
+ std::vector<unsigned> &args = *Raw->VarArgs;
for (unsigned i = 0, E = args.size(); i != E; ++i) {
- const Type *ETy = GetElementPtrInst::getIndexedType(Raw.Ty, Idx, true);
+ const Type *ETy = GetElementPtrInst::getIndexedType(Raw->Ty, Idx, true);
const CompositeType *ElTy = dyn_cast_or_null<CompositeType>(ETy);
if (!ElTy) return true;
Idx.push_back(V = getValue(ElTy->getIndexType(), args[i]));
if (!V) return true;
}
- delete Raw.VarArgs;
+ delete Raw->VarArgs;
break;
}
- Res = new GetElementPtrInst(getValue(Raw.Ty, Raw.Arg1), Idx);
+ Res = new GetElementPtrInst(getValue(Raw->Ty, Raw->Arg1), Idx);
return false;
}
case 62: // volatile load
case Instruction::Load:
- if (Raw.NumOperands != 1) return true;
- if (!isa<PointerType>(Raw.Ty)) return true;
- Res = new LoadInst(getValue(Raw.Ty, Raw.Arg1), "", Raw.Opcode == 62);
+ if (Raw->NumOperands != 1) return true;
+ if (!isa<PointerType>(Raw->Ty)) return true;
+ Res = new LoadInst(getValue(Raw->Ty, Raw->Arg1), "", Raw->Opcode == 62);
return false;
case 63: // volatile store
case Instruction::Store: {
- if (!isa<PointerType>(Raw.Ty) || Raw.NumOperands != 2) return true;
+ if (!isa<PointerType>(Raw->Ty) || Raw->NumOperands != 2) return true;
- Value *Ptr = getValue(Raw.Ty, Raw.Arg2);
+ Value *Ptr = getValue(Raw->Ty, Raw->Arg2);
const Type *ValTy = cast<PointerType>(Ptr->getType())->getElementType();
- Res = new StoreInst(getValue(ValTy, Raw.Arg1), Ptr, Raw.Opcode == 63);
+ Res = new StoreInst(getValue(ValTy, Raw->Arg1), Ptr, Raw->Opcode == 63);
return false;
}
case Instruction::Unwind:
- if (Raw.NumOperands != 0) return true;
+ if (Raw->NumOperands != 0) return true;
Res = new UnwindInst();
return false;
- } // end switch(Raw.Opcode)
+ } // end switch(Raw->Opcode)
- std::cerr << "Unrecognized instruction! " << Raw.Opcode
+ std::cerr << "Unrecognized instruction! " << Raw->Opcode
<< " ADDR = 0x" << (void*)Buf << "\n";
return true;
}
Index: llvm/lib/Bytecode/Reader/ReaderInternals.h
diff -u llvm/lib/Bytecode/Reader/ReaderInternals.h:1.43 llvm/lib/Bytecode/Reader/ReaderInternals.h:1.44
--- llvm/lib/Bytecode/Reader/ReaderInternals.h:1.43 Mon Sep 22 18:58:08 2003
+++ llvm/lib/Bytecode/Reader/ReaderInternals.h Tue Sep 23 11:17:50 2003
@@ -164,8 +164,8 @@
bool ParseInstruction (const unsigned char *&Buf, const unsigned char *End,
Instruction *&);
- bool ParseRawInst (const unsigned char *&Buf, const unsigned char *End,
- RawInst &);
+ std::auto_ptr<RawInst> ParseRawInst(const unsigned char *&Buf,
+ const unsigned char *End);
void ParseConstantPool(const unsigned char *&Buf, const unsigned char *EndBuf,
ValueTable &Tab, TypeValuesListTy &TypeTab);
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