[LLVMdev] Distinguishing Pointer Variable and Ordinary Variable
Abhinash Jain
omnia at mailinator.com
Sun Sep 1 04:31:47 PDT 2013
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 ???
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