#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*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *, int *);
int swappingintwono() {
  int i, n;
  printf("Please enter two numbers: ");
  scanf("%d %d", &i, &n);
  i = (i + n) - i;
  n = (n + i) - n;
  printf("Now i=%d and n=%d", n, i);
}


x86 assembly (clang, -O0):
<swappingintwono>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xede(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
add    -0xc(%rbp),%eax
sub    -0x8(%rbp),%eax
mov    %eax,-0x8(%rbp)
mov    -0xc(%rbp),%eax
add    -0x8(%rbp),%eax
sub    -0xc(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0xc(%rbp),%esi
mov    -0x8(%rbp),%edx
lea    0xeb2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<swappingintwono>:
push   %rax
lea    0xed8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xee5(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
call   1040 <scanf@plt>
mov    (%rsp),%edx
mov    %edx,0x4(%rsp)
lea    0xed0(%rip),%rdi
mov    %edx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
pop    %rcx
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Please enter two numbers: \00"
@.str.1 = [6 x i8] c"%d %d\00"
@.str.2 = [18 x i8] c"Now i=%d and n=%d\00"
define i32 @swappingintwono() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3)
%6 = load i32, i32* %2
%7 = load i32, i32* %3
%8 = add nsw i32 %6, %7
%9 = load i32, i32* %2
%10 = sub nsw i32 %8, %9
store i32 %10, i32* %2
%11 = load i32, i32* %3
%12 = load i32, i32* %2
%13 = add nsw i32 %11, %12
%14 = load i32, i32* %3
%15 = sub nsw i32 %13, %14
store i32 %15, i32* %3
%16 = load i32, i32* %3
%17 = load i32, i32* %2
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i32 %16, i32 %17)
%19 = load i32, i32* %1
ret i32 %19
}

LLVM IR (-O2):
@.str = [27 x i8] c"Please enter two numbers: \00"
@.str.1 = [6 x i8] c"%d %d\00"
@.str.2 = [18 x i8] c"Now i=%d and n=%d\00"
define i32 @swappingintwono() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = load i32, i32* %2
store i32 %7, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i32 %7, i32 %7)
ret i32 undef
}