LLVM IR get a pointer from a llvalue - llvm

Question

I'm working with the LLVM IR in Ocaml to build a toy language and, now my problem is to convert the variable into the reference to this variable.
In other words, my simple program is this
int main(){
int i;
i = 2;
int *p;
p = &i;
print(*p);
return 0;
}
and my problem is to get the pointer of the variable i in the instruction p = &i;, my actual
IR generated is
define i32 #main() {
entry:
%i = alloca i32
store i32 2, i32* %i
%p = alloca i32*
%0 = getelementptr i32, i32* %i, i32 0
store i32* %0, i32** %p
%1 = load i32*, i32** %p
%2 = load i32, i32* %1
call void #print(i32 %2)
ret i32 0
}
I don't like this line %0 = getelementptr i32, i32* %i, i32 0, and I think that I'm only lucky that my code work as expected.
To summarize my question is, What is the good practice to make this memory operation with a variable like C language? In particular, I need to to the following
i = 2;
int *p;
p = &i;
And also
int *p;
p = &i;
*p = *p + 2;
I'm missing something because when I try to compile code like that *p = *p + 2; I receive some core dump.
I noted also that clang for my first example doesn't use getelementptr, but generate some code like that
; Function Attrs: noinline nounwind optnone uwtable
define dso_local i32 #main() #0 {
%1 = alloca i32, align 4
%2 = alloca i32, align 4
%3 = alloca i32*, align 8
store i32 0, i32* %1, align 4
store i32 2, i32* %2, align 4
store i32* %2, i32** %3, align 8
%4 = load i32*, i32** %3, align 8
%5 = load i32, i32* %4, align 4
%6 = call i32 (i32, ...) bitcast (i32 (...)* #print to i32 (i32, ...)*)(i32 %5)
ret i32 0
}
In my grammar, the *p is a pointer and I convert it into llvm IR into an llvm pointer type.