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* Fix a nefarious bugs: TypesEqual was wrong for varargs methods

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* MethodType::get now takes a literal isVarArg method argument
* Use new style casts


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@773 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-10-13 07:01:33 +00:00
parent 762a2418a1
commit 56c5acbe96
1 changed files with 29 additions and 16 deletions
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45
lib/VMCore/Type.cpp
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@ -140,7 +140,7 @@ MethodType::MethodType(const Type *Result, const vector<const Type*> &Params,
ResultType(PATypeHandle<Type>(Result, this)),
isVarArgs(IsVarArgs) {
ParamTys.reserve(Params.size());
for (unsigned i = 0; i < Params.size()-IsVarArgs; ++i)
for (unsigned i = 0; i < Params.size(); ++i)
ParamTys.push_back(PATypeHandle<Type>(Params[i], this));
setDerivedTypeProperties();
@ -155,8 +155,10 @@ ArrayType::ArrayType(const Type *ElType, int NumEl)
StructType::StructType(const vector<const Type*> &Types)
: DerivedType("", StructTyID) {
ETypes.reserve(Types.size());
for (unsigned i = 0; i < Types.size(); ++i)
for (unsigned i = 0; i < Types.size(); ++i) {
assert(Types[i] != Type::VoidTy && "Void type in method prototype!!");
ETypes.push_back(PATypeHandle<Type>(Types[i], this));
}
setDerivedTypeProperties();
}
@ -315,12 +317,17 @@ static bool TypesEqual(const Type *Ty, const Type *Ty2,
for (; I != IE && I2 != IE2; ++I, ++I2)
if (!TypesEqual(*I, *I2, EqTypes)) return false;
// One really annoying special case that breaks an otherwise nice simple
// Two really annoying special cases that breaks an otherwise nice simple
// algorithm is the fact that arraytypes have sizes that differentiates types,
// consider this now.
if (Ty->isArrayType())
if (cast<const ArrayType>(Ty)->getNumElements() !=
cast<const ArrayType>(Ty2)->getNumElements()) return false;
// and that method types can be varargs or not. Consider this now.
if (const ArrayType *ATy = dyn_cast<ArrayType>(Ty)) {
if (ATy->getNumElements() != cast<const ArrayType>(Ty2)->getNumElements())
return false;
} else if (const MethodType *MTy = dyn_cast<MethodType>(Ty)) {
if (MTy->isVarArg() != cast<const MethodType>(Ty2)->isVarArg())
return false;
}
return I == IE && I2 == IE2; // Types equal if both iterators are done
}
@ -446,10 +453,12 @@ protected:
class MethodValType : public ValTypeBase<MethodValType, MethodType> {
PATypeHandle<Type> RetTy;
vector<PATypeHandle<Type> > ArgTypes;
bool isVarArg;
public:
MethodValType(const Type *ret, const vector<const Type*> &args,
TypeMap<MethodValType, MethodType> &Tab)
: ValTypeBase<MethodValType, MethodType>(Tab), RetTy(ret, this) {
bool IVA, TypeMap<MethodValType, MethodType> &Tab)
: ValTypeBase<MethodValType, MethodType>(Tab), RetTy(ret, this),
isVarArg(IVA) {
for (unsigned i = 0; i < args.size(); ++i)
ArgTypes.push_back(PATypeHandle<Type>(args[i], this));
}
@ -458,7 +467,8 @@ public:
// this MethodValType owns them, not the old one!
//
MethodValType(const MethodValType &MVT)
: ValTypeBase<MethodValType, MethodType>(MVT), RetTy(MVT.RetTy, this) {
: ValTypeBase<MethodValType, MethodType>(MVT), RetTy(MVT.RetTy, this),
isVarArg(MVT.isVarArg) {
ArgTypes.reserve(MVT.ArgTypes.size());
for (unsigned i = 0; i < MVT.ArgTypes.size(); ++i)
ArgTypes.push_back(PATypeHandle<Type>(MVT.ArgTypes[i], this));
@ -472,8 +482,11 @@ public:
}
inline bool operator<(const MethodValType &MTV) const {
return RetTy.get() < MTV.RetTy.get() ||
(RetTy.get() == MTV.RetTy.get() && ArgTypes < MTV.ArgTypes);
if (RetTy.get() < MTV.RetTy.get()) return true;
if (RetTy.get() > MTV.RetTy.get()) return false;
if (ArgTypes < MTV.ArgTypes) return true;
return (ArgTypes == MTV.ArgTypes) && isVarArg < MTV.isVarArg;
}
};
@ -482,13 +495,13 @@ static TypeMap<MethodValType, MethodType> MethodTypes;
// MethodType::get - The factory function for the MethodType class...
MethodType *MethodType::get(const Type *ReturnType,
const vector<const Type*> &Params) {
MethodValType VT(ReturnType, Params, MethodTypes);
const vector<const Type*> &Params,
bool isVarArg) {
MethodValType VT(ReturnType, Params, isVarArg, MethodTypes);
MethodType *MT = MethodTypes.get(VT);
if (MT) return MT;
bool IsVarArg = Params.size() && (Params[Params.size()-1] == Type::VoidTy);
MethodTypes.add(VT, MT = new MethodType(ReturnType, Params, IsVarArg));
MethodTypes.add(VT, MT = new MethodType(ReturnType, Params, isVarArg));
#ifdef DEBUG_MERGE_TYPES
cerr << "Derived new type: " << MT << endl;