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Various cleanups and simplifications. This speeds up reading a bytecode file

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Bill gave me from 8.69s to 6.90s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8971 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-10-08 21:18:57 +00:00
parent 7f58de2b99
commit 36392bc524
3 changed files with 57 additions and 61 deletions
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36
lib/Bytecode/Reader/InstructionReader.cpp
View File

@ -161,12 +161,12 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
delete PN;
return true;
case 2: PN->addIncoming(getValue(Raw->Ty, Raw->Arg1),
cast<BasicBlock>(getValue(Type::LabelTy,
cast<BasicBlock>(getValue(Type::LabelTyID,
Raw->Arg2)));
break;
default:
PN->addIncoming(getValue(Raw->Ty, Raw->Arg1),
cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2)));
cast<BasicBlock>(getValue(Type::LabelTyID, Raw->Arg2)));
if (Raw->VarArgs->size() & 1) {
std::cerr << "PHI Node with ODD number of arguments!\n";
delete PN;
@ -175,7 +175,7 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
std::vector<unsigned> &args = *Raw->VarArgs;
for (unsigned i = 0; i < args.size(); i+=2)
PN->addIncoming(getValue(Raw->Ty, args[i]),
cast<BasicBlock>(getValue(Type::LabelTy, args[i+1])));
cast<BasicBlock>(getValue(Type::LabelTyID, args[i+1])));
}
delete Raw->VarArgs;
break;
@ -188,7 +188,7 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
case Instruction::Shr:
Res = new ShiftInst((Instruction::OtherOps)Raw->Opcode,
getValue(Raw->Ty, Raw->Arg1),
getValue(Type::UByteTy, Raw->Arg2));
getValue(Type::UByteTyID, Raw->Arg2));
return false;
case Instruction::Ret:
if (Raw->NumOperands == 0) {
@ -200,12 +200,12 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
case Instruction::Br:
if (Raw->NumOperands == 1) {
Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTy,Raw->Arg1)));
Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTyID,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));
Res = new BranchInst(cast<BasicBlock>(getValue(Type::LabelTyID, Raw->Arg1)),
cast<BasicBlock>(getValue(Type::LabelTyID, Raw->Arg2)),
getValue(Type::BoolTyID , Raw->Arg3));
return false;
}
break;
@ -213,7 +213,7 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
case Instruction::Switch: {
SwitchInst *I =
new SwitchInst(getValue(Raw->Ty, Raw->Arg1),
cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2)));
cast<BasicBlock>(getValue(Type::LabelTyID, Raw->Arg2)));
Res = I;
if (Raw->NumOperands < 3) return false; // No destinations? Weird.
@ -226,7 +226,7 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
std::vector<unsigned> &args = *Raw->VarArgs;
for (unsigned i = 0; i < args.size(); i += 2)
I->addCase(cast<Constant>(getValue(Raw->Ty, args[i])),
cast<BasicBlock>(getValue(Type::LabelTy, args[i+1])));
cast<BasicBlock>(getValue(Type::LabelTyID, args[i+1])));
delete Raw->VarArgs;
return false;
@ -311,11 +311,11 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
if (!FTy->isVarArg()) {
if (Raw->NumOperands < 3) return true;
Normal = cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg2));
Normal = cast<BasicBlock>(getValue(Type::LabelTyID, Raw->Arg2));
if (Raw->NumOperands == 3)
Except = cast<BasicBlock>(getValue(Type::LabelTy, Raw->Arg3));
Except = cast<BasicBlock>(getValue(Type::LabelTyID, Raw->Arg3));
else {
Except = cast<BasicBlock>(getValue(Type::LabelTy, args[0]));
Except = cast<BasicBlock>(getValue(Type::LabelTyID, args[0]));
FunctionType::ParamTypes::const_iterator It = PL.begin();
for (unsigned i = 1; i < args.size(); i++) {
@ -329,13 +329,13 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
if (args.size() < 4) return true;
if (getType(args[0]) != Type::LabelTy ||
getType(args[2]) != Type::LabelTy) return true;
Normal = cast<BasicBlock>(getValue(Type::LabelTy, args[1]));
Except = cast<BasicBlock>(getValue(Type::LabelTy, args[3]));
Normal = cast<BasicBlock>(getValue(Type::LabelTyID, args[1]));
Except = cast<BasicBlock>(getValue(Type::LabelTyID, args[3]));
if ((args.size() & 1) != 0)
return true; // Must be pairs of type/value
for (unsigned i = 4; i < args.size(); i+=2) {
Params.push_back(getValue(getType(args[i]), args[i+1]));
Params.push_back(getValue(args[i], args[i+1]));
if (Params.back() == 0) return true;
}
}
@ -347,7 +347,7 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
}
case Instruction::Malloc:
if (Raw->NumOperands > 2) return true;
V = Raw->NumOperands ? getValue(Type::UIntTy, Raw->Arg1) : 0;
V = Raw->NumOperands ? getValue(Type::UIntTyID, Raw->Arg1) : 0;
if (const PointerType *PTy = dyn_cast<PointerType>(Raw->Ty))
Res = new MallocInst(PTy->getElementType(), V);
else
@ -356,7 +356,7 @@ bool BytecodeParser::ParseInstruction(const unsigned char *&Buf,
case Instruction::Alloca:
if (Raw->NumOperands > 2) return true;
V = Raw->NumOperands ? getValue(Type::UIntTy, Raw->Arg1) : 0;
V = Raw->NumOperands ? getValue(Type::UIntTyID, Raw->Arg1) : 0;
if (const PointerType *PTy = dyn_cast<PointerType>(Raw->Ty))
Res = new AllocaInst(PTy->getElementType(), V);
else

81
lib/Bytecode/Reader/Reader.cpp
View File

@ -55,8 +55,25 @@ const Type *BytecodeParser::getType(unsigned ID) {
}
//cerr << "Looking up Type ID: " << ID << "\n";
const Value *V = getValue(Type::TypeTy, ID, false);
return cast_or_null<Type>(V);
if (ID < Type::NumPrimitiveIDs) {
const Type *T = Type::getPrimitiveType((Type::PrimitiveID)ID);
if (T) return T; // Asked for a primitive type...
}
// Otherwise, derived types need offset...
ID -= FirstDerivedTyID;
// Is it a module-level type?
if (ID < ModuleTypeValues.size())
return ModuleTypeValues[ID].get();
// Nope, is it a function-level type?
ID -= ModuleTypeValues.size();
if (ID < FunctionTypeValues.size())
return FunctionTypeValues[ID].get();
return 0;
}
int BytecodeParser::insertValue(Value *Val, ValueTable &ValueTab) {
@ -95,35 +112,18 @@ void BytecodeParser::setValueTo(ValueTable &ValueTab, unsigned Slot,
ValueTab[type]->setOperand(Slot-HasImplicitZeroInitializer, Val);
}
Value *BytecodeParser::getValue(const Type *Ty, unsigned oNum, bool Create) {
return getValue(getTypeSlot(Ty), oNum, Create);
}
Value *BytecodeParser::getValue(unsigned type, unsigned oNum, bool Create) {
assert(type != Type::TypeTyID && "getValue() cannot get types!");
unsigned Num = oNum;
unsigned type = getTypeSlot(Ty); // The type plane it lives in...
if (type == Type::TypeTyID) { // The 'type' plane has implicit values
assert(Create == false);
if (Num < Type::NumPrimitiveIDs) {
const Type *T = Type::getPrimitiveType((Type::PrimitiveID)Num);
if (T) return (Value*)T; // Asked for a primitive type...
}
// Otherwise, derived types need offset...
Num -= FirstDerivedTyID;
// Is it a module-level type?
if (Num < ModuleTypeValues.size())
return (Value*)ModuleTypeValues[Num].get();
// Nope, is it a function-level type?
Num -= ModuleTypeValues.size();
if (Num < FunctionTypeValues.size())
return (Value*)FunctionTypeValues[Num].get();
return 0;
}
if (HasImplicitZeroInitializer && type >= FirstDerivedTyID) {
if (Num == 0)
return Constant::getNullValue(Ty);
return Constant::getNullValue(getType(type));
--Num;
}
@ -138,19 +138,13 @@ Value *BytecodeParser::getValue(const Type *Ty, unsigned oNum, bool Create) {
if (!Create) return 0; // Do not create a placeholder?
Value *d = 0;
switch (Ty->getPrimitiveID()) {
case Type::LabelTyID:
d = new BBPHolder(Ty, oNum);
break;
default:
d = new ValPHolder(Ty, oNum);
break;
}
const Type *Ty = getType(type);
Value *Val = type == Type::LabelTyID ? (Value*)new BBPHolder(Ty, oNum) :
(Value*)new ValPHolder(Ty, oNum);
assert(d != 0 && "How did we not make something?");
if (insertValue(d, LateResolveValues) == -1) return 0;
return d;
assert(Val != 0 && "How did we not make something?");
if (insertValue(Val, LateResolveValues) == -1) return 0;
return Val;
}
/// getConstantValue - Just like getValue, except that it returns a null pointer
@ -252,11 +246,12 @@ void BytecodeParser::ParseSymbolTable(const unsigned char *&Buf,
if (read(Buf, EndBuf, Name, false)) // Not aligned...
throw std::string("Buffer not aligned.");
Value *V = getValue(Ty, slot, false); // Find mapping...
if (V == 0) {
BCR_TRACE(3, "FAILED LOOKUP: Slot #" << slot << "\n");
throw std::string("Failed value look-up.");
}
Value *V;
if (Typ == Type::TypeTyID)
V = (Value*)getType(slot);
else
V = getValue(Typ, slot, false); // Find mapping...
if (V == 0) throw std::string("Failed value look-up.");
BCR_TRACE(4, "Map: '" << Name << "' to #" << slot << ":" << *V;
if (!isa<Instruction>(V)) std::cerr << "\n");

1
lib/Bytecode/Reader/ReaderInternals.h
View File

@ -179,6 +179,7 @@ private:
const unsigned char *EndBuf);
Value *getValue(const Type *Ty, unsigned num, bool Create = true);
Value *getValue(unsigned TypeID, unsigned num, bool Create = true);
const Type *getType(unsigned ID);
Constant *getConstantValue(const Type *Ty, unsigned num);