Displaying 4 results from an estimated 4 matches for "constorzero".
2012 Jan 20
2
[LLVMdev] How to force the creation of arrays with zeroes?
...ts.
Consider next code:
Constant* C = reinterpret_cast<Constant*>(I->getOperand(idx));
Constant* ArrayItem;
if (!isa<ConstantAggregateZero>(C))
ArrayItem = reinterpret_cast<Constant*>(I->getOperand(ArrItemIdx));
else
ArrayItem = ZeroInt;
Code analog within wrapper:
ConstOrZero C(I->getOperand(idx));
Constant* ArrayItem = C.getOperand(ArrItemIdx); // Unpleasant work with isa<> inside.
Advantages of this approach is that ConstantAggregateZero saves memory and we use it everywhere.
And in the same time we needn't dance with isa<ConstantAggregateZero>....
2012 Jan 21
0
[LLVMdev] How to force the creation of arrays with zeroes?
...einterpret_cast<Constant*>(I->getOperand(idx));
> Constant* ArrayItem;
> if (!isa<ConstantAggregateZero>(C))
> ArrayItem = reinterpret_cast<Constant*>(I->getOperand(ArrItemIdx));
> else
> ArrayItem = ZeroInt;
>
> Code analog within wrapper:
>
> ConstOrZero C(I->getOperand(idx));
> Constant* ArrayItem = C.getOperand(ArrItemIdx); // Unpleasant work with isa<> inside.
>
> Advantages of this approach is that ConstantAggregateZero saves memory and we use it everywhere.
> And in the same time we needn't dance with isa<ConstantA...
2012 Jan 20
0
[LLVMdev] How to force the creation of arrays with zeroes?
Hi Anton,
>> you can't, you can only get a ConstantAggregateZero. This is actually kind of
>> annoying, and means that places expecting a ConstantArray have to remember to
>> also check for ConstantAggregateZero. Perhaps there's a good reason for the
>> current design, but if not it would be great to eliminate this wart.
> Well, I think the main reason it so
2012 Jan 20
2
[LLVMdev] How to force the creation of arrays with zeroes?
> you can't, you can only get a ConstantAggregateZero. This is actually kind of
> annoying, and means that places expecting a ConstantArray have to remember to
> also check for ConstantAggregateZero. Perhaps there's a good reason for the
> current design, but if not it would be great to eliminate this wart.
Well, I think the main reason it so reduce the size of .ll / .bc when