if (ConstantInt *CIdx = dyn_cast<ConstantInt>(Idx)) {
uint64_t Index = CIdx->getZExtValue();
if (Index >= CVal->getNumOperands())
- // ee({w,x,y,z}, wrong_value) -> w (an arbitrary value).
- return CVal->getOperand(0);
+ // ee({w,x,y,z}, wrong_value) -> undef
+ return UndefValue::get(cast<VectorType>(Val->getType())->getElementType());
return CVal->getOperand(CIdx->getZExtValue());
} else if (isa<UndefValue>(Idx)) {
- // ee({w,x,y,z}, undef) -> w (an arbitrary value).
- return CVal->getOperand(0);
+ // ee({w,x,y,z}, undef) -> undef
+ return UndefValue::get(cast<VectorType>(Val->getType())->getElementType());
}
}
return 0;