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Fix a few bugs. Fix pessimization handling sized arrays

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1422 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-12-05 19:39:15 +00:00
parent 0da29c8ec1
commit ac0077e143
1 changed files with 15 additions and 7 deletions
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22
lib/Transforms/ExprTypeConvert.cpp
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@ -317,6 +317,8 @@ bool ExpressionConvertableToType(Value *V, const Type *Ty,
Value *ConvertExpressionToType(Value *V, const Type *Ty, ValueMapCache &VMC) {
if (V->getType() == Ty) return V; // Already where we need to be?
ValueMapCache::ExprMapTy::iterator VMCI = VMC.ExprMap.find(V);
if (VMCI != VMC.ExprMap.end()) {
assert(VMCI->second->getType() == Ty);
@ -623,17 +625,17 @@ static bool OperandConvertableToType(User *U, Value *V, const Type *Ty,
return ExpressionConvertableToType(I->getOperand(1), PointerType::get(Ty),
CTMap);
} else if (const PointerType *PT = dyn_cast<PointerType>(Ty)) {
if (isa<ArrayType>(PT->getElementType()))
return false; // Avoid getDataSize on unsized array type!
const Type *ElTy = PT->getElementType();
if (ArrayType *AT = dyn_cast<ArrayType>(ElTy))
ElTy = AT->getElementType(); // Avoid getDataSize on unsized array type!
assert(V == I->getOperand(1));
// Must move the same amount of data...
if (TD.getTypeSize(PT->getElementType()) !=
TD.getTypeSize(I->getOperand(0)->getType())) return false;
if (TD.getTypeSize(ElTy) != TD.getTypeSize(I->getOperand(0)->getType()))
return false;
// Can convert store if the incoming value is convertable...
return ExpressionConvertableToType(I->getOperand(0), PT->getElementType(),
CTMap);
return ExpressionConvertableToType(I->getOperand(0), ElTy, CTMap);
}
return false;
}
@ -794,7 +796,13 @@ static void ConvertOperandToType(User *U, Value *OldVal, Value *NewVal,
Res->setOperand(1, ConvertExpressionToType(I->getOperand(1), NewPT, VMC));
} else { // Replace the source pointer
const Type *ValTy = cast<PointerType>(NewTy)->getElementType();
Res = new StoreInst(Constant::getNullConstant(ValTy), NewVal);
vector<Value*> Indices;
while (ArrayType *AT = dyn_cast<ArrayType>(ValTy)) {
Indices.push_back(ConstantUInt::get(Type::UIntTy, 0));
ValTy = AT->getElementType();
}
Res = new StoreInst(Constant::getNullConstant(ValTy), NewVal, Indices);
VMC.ExprMap[I] = Res;
Res->setOperand(0, ConvertExpressionToType(I->getOperand(0), ValTy, VMC));
}