#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*/ Swap(int *, int *);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *, int *);
int main(void) {
  int x, y;
  printf("Please enter two ints\n");
  scanf("%d%d", &x, &y);
  Swap(&x, &y);
  printf("The two ints, in reverse order, are:\n");
  printf("%d %d\n", x, y);
  printf("Bye!\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec3(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
call   1050 <scanf@plt>
lea    -0x8(%rbp),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <Swap@plt>
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xeb9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xec1(%rip),%rdi
call   1030 <puts@plt>
lea    0xea9(%rip),%rdi
lea    0x4(%rsp),%rbx
mov    %rsp,%r14
mov    %rbx,%rsi
mov    %r14,%rdx
call   1060 <scanf@plt>
mov    %rbx,%rdi
mov    %r14,%rsi
call   1050 <Swap@plt>
lea    0xea6(%rip),%rdi
call   1030 <puts@plt>
mov    0x4(%rsp),%esi
mov    (%rsp),%edx
lea    0xe76(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeaa(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [23 x i8] c"Please enter two ints\0A\00"
@.str.1 = [5 x i8] c"%d%d\00"
@.str.2 = [38 x i8] c"The two ints, in reverse order, are:\0A\00"
@.str.3 = [7 x i8] c"%d %d\0A\00"
@.str.4 = [6 x i8] c"Bye!\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3)
%6 = call i32 @Swap(i32* %2, i32* %3)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str.2, i64 0, i64 0))
%8 = load i32, i32* %2
%9 = load i32, i32* %3
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i32 %8, i32 %9)
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [5 x i8] c"%d%d\00"
@.str.3 = [7 x i8] c"%d %d\0A\00"
@str = [22 x i8] c"Please enter two ints\00"
@str.5 = [37 x i8] c"The two ints, in reverse order, are:\00"
@str.6 = [5 x i8] c"Bye!\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 ([22 x i8], [22 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = call i32 @Swap(i32* %1, i32* %2)
%8 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @str.5, i64 0, i64 0))
%9 = load i32, i32* %1
%10 = load i32, i32* %2
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i32 %9, i32 %10)
%12 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @str.6, i64 0, i64 0))
ret i32 0
}