llvm dev - Jul 2010 - [LLVMdev] How to recognize pointer variable & ordinary variable

How to recognize pointer variable & ordinary variable? I have tried with
"isa<PointerType>(V->getType())", but failed.

-- 
regards,
soumya prasad ukil
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Hi Soumya_Prasad_Ukil,
> How to recognize pointer variable & ordinary variable? I have tried
with
> "isa<PointerType>(V->getType())", but failed.
I'm not sure what you are asking, but if you are asking whether an
alloca instruction A represents local memory of pointer type, you
can use A->getAllocatedType().  You can also use
cast<PointerType>(A->getType())->getElementType().  The reason that
an alloca instruction always has pointer type is that the instruction
represents a pointer to the allocated memory.

Ciao,

Duncan.

Your last statement is correct. But still my stand does not change. I want
to differentiate ordinary local variable & pointer variables.
Let's have a program,
int a,b,c,*ptr;

I want to extract only the local variables. That's what my question was. I
think it is clear now.
cast<PointerType>(A->getType()
>
> )->getElementType() is not working. I am also getting error with
> A->getAllocatedType().
>


On 22 July 2010 01:01, Duncan Sands <baldrick at free.fr> wrote:
> Hi Soumya_Prasad_Ukil,
>
> > How to recognize pointer variable & ordinary variable? I have
tried with
> > "isa<PointerType>(V->getType())", but failed.
>
> I'm not sure what you are asking, but if you are asking whether an
> alloca instruction A represents local memory of pointer type, you
> can use A->getAllocatedType().  You can also use
> cast<PointerType>(A->getType())->getElementType().  The reason
that
> an alloca instruction always has pointer type is that the instruction
> represents a pointer to the allocated memory.
>
> Ciao,
>
> Duncan.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>


-- 
regards,
soumya prasad ukil
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