llvm dev - Feb 2010 - [LLVMdev] A very basic doubt about LLVM Alias Analysis

Hi,

I have a program like:

main() {
    int i,*k;
    k = &i;
    i=4;
    ......

}

then why dont i get {k -> i} ie k is aliased to i in any of the analysis.

If i want to get this then how can i get it.

thanks and regards,
Ambika

Hi ambika,
> main() {
>     int i,*k;
>     k = &i;
> then why dont i get {k -> i} ie k is aliased to i in any of the
analysis.
only pointers can alias each other, and i is not a pointer.

Ciao,

Duncan.

Oh m sorry for that mistake as I had points to in mind.
But still what about the following prog:

int main()
{
        int *i,*j,k;
        i=&k;
        j=&k;
        k=4;
        printf("%d,%d,%d",*i,*j,k);
        return 0;
}


here too i dont get <i,j> alias each other.
 
Duncan Sands wrote:
> Hi ambika,
>
>> main() {
>>     int i,*k;
>>     k = &i;
>
>> then why dont i get {k -> i} ie k is aliased to i in any of the 
>> analysis.
>
> only pointers can alias each other, and i is not a pointer.
>
> Ciao,
>
> Duncan.