[LLVMdev] Distinguishing Pointer Variable and Ordinary Variable
Joey Gouly
joel.gouly at gmail.com
Sun Sep 1 06:54:47 PDT 2013
Check it's type to see if it's a pointer or not?
On 1 September 2013 12:31, Abhinash Jain <omnia at mailinator.com> wrote:
> C Code :-
> int main()
> {
> int a=10,c;
> int *b;
> c=20;
> *b=a;
> return 0;
> }
>
> IR of above code :-
> define i32 @main() #0 {
> entry:
> 1. %retval = alloca i32, align 4
> 2. %a = alloca i32, align 4
> 3. %c = alloca i32, align 4
> 4. %b = alloca i32*, align 8
> 5. store i32 0, i32* %retval
> 6. store i32 10, i32* %a, align 4
> 7. store i32 20, i32* %c, align 4
> 8. %0 = load i32* %a, align 4
> 9. %1 = load i32** %b, align 8
> 10. store i32 %0, i32* %1, align 4
> 11. ret i32 0
> }
>
>
> Line 8,9,10 of IR represents *b=a;
>
> Now I want to recognise whether i32* %1 on line 10 is a pointer variable
> or
> ordinary variable through llvm pass.
> So how to solve this issue ???
>
>
>
> --
> View this message in context:
> http://llvm.1065342.n5.nabble.com/Distinguishing-Pointer-Variable-and-Ordinary-Variable-tp60881.html
> Sent from the LLVM - Dev mailing list archive at Nabble.com.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130901/0540cad8/attachment.html>
More information about the llvm-dev
mailing list