#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ fun(int, int *);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
main() {
  int j, i;
  int *intptr;
  printf("enter an integer\n");
  scanf("%d", &i);
  intptr = &j;
  j = i;
  printf("i and j are %d %d \n", i, j);
  fun(j, intptr);
  printf("i is:%d", i);
  printf("\n j is:%d", j);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xec1(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xede(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
lea    -0x4(%rbp),%rax
mov    %rax,-0x10(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0x8(%rbp),%esi
mov    -0x4(%rbp),%edx
lea    0xea1(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x4(%rbp),%edi
mov    -0x10(%rbp),%rsi
call   1030 <fun@plt>
mov    -0x8(%rbp),%esi
lea    0xe98(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x4(%rbp),%esi
lea    0xe8f(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xeda(%rip),%rdi
call   1030 <puts@plt>
lea    0xec1(%rip),%rdi
lea    0x8(%rsp),%rsi
call   1060 <scanf@plt>
mov    0x8(%rsp),%ebx
mov    %ebx,0xc(%rsp)
lea    0xe8f(%rip),%rdi
mov    %ebx,%esi
mov    %ebx,%edx
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xc(%rsp),%rsi
mov    %ebx,%edi
call   1040 <fun@plt>
mov    0x8(%rsp),%esi
lea    0xe81(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0xc(%rsp),%esi
lea    0xe77(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [18 x i8] c"enter an integer\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"i and j are %d %d \0A\00"
@.str.3 = [8 x i8] c"i is:%d\00"
@.str.4 = [10 x i8] c"\0A j is:%d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
store i32* %1, i32** %3
%6 = load i32, i32* %2
store i32 %6, i32* %1
%7 = load i32, i32* %2
%8 = load i32, i32* %1
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %7, i32 %8)
%10 = load i32, i32* %1
%11 = load i32*, i32** %3
%12 = call i32 @fun(i32 %10, i32* %11)
%13 = load i32, i32* %2
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0), i32 %13)
%15 = load i32, i32* %1
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), i32 %15)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"i and j are %d %d \0A\00"
@.str.3 = [8 x i8] c"i is:%d\00"
@.str.4 = [10 x i8] c"\0A j is:%d\00"
@str = [17 x i8] c"enter an integer\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%7 = load i32, i32* %2
store i32 %7, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %7, i32 %7)
%9 = call i32 @fun(i32 %7, i32* %1)
%10 = load i32, i32* %2
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0), i32 %10)
%12 = load i32, i32* %1
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), i32 %12)
ret i32 0
}