#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, int);
int /*<<< orphan*/ swap(int, int);
int /*<<< orphan*/ swapp(int *, int *);
int main() {
  int x = 100, y = 200;
  printf("Before swap: x = %d, y = %d\n", x, y);
  swap(x, y);
  printf("After swap: x = %d, y = %d\n\n", x, y);
  printf("Before swap: x = %d, y = %d\n", x, y);
  swapp(&x, &y);
  printf("After swap: x = %d, y = %d\n", x, y);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x64,-0x8(%rbp)
movl   $0xc8,-0xc(%rbp)
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xea6(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%edi
mov    -0xc(%rbp),%esi
call   1040 <swap@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xea6(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe77(%rip),%rdi
call   1030 <printf@plt>
lea    -0x8(%rbp),%rdi
lea    -0xc(%rbp),%rsi
call   1050 <swapp@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe92(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
movl   $0x64,0xc(%rsp)
movl   $0xc8,0x8(%rsp)
lea    0xeb4(%rip),%rbx
mov    %rbx,%rdi
mov    $0x64,%esi
mov    $0xc8,%edx
call   1030 <printf@plt>
mov    $0x64,%edi
mov    $0xc8,%esi
call   1040 <swap@plt>
lea    0xea9(%rip),%rdi
mov    $0x64,%esi
mov    $0xc8,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x64,%esi
mov    $0xc8,%edx
call   1030 <printf@plt>
lea    0xc(%rsp),%rdi
lea    0x8(%rsp),%rsi
call   1050 <swapp@plt>
mov    0xc(%rsp),%esi
mov    0x8(%rsp),%edx
lea    0xe87(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [29 x i8] c"Before swap: x = %d, y = %d\0A\00"
@.str.1 = [29 x i8] c"After swap: x = %d, y = %d\0A\0A\00"
@.str.2 = [28 x i8] c"After swap: x = %d, y = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 100, i32* %2
store i32 200, i32* %3
%4 = load i32, i32* %2
%5 = load i32, i32* %3
%6 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0), i32 %4, i32 %5)
%7 = load i32, i32* %2
%8 = load i32, i32* %3
%9 = call i32 @swap(i32 %7, i32 %8)
%10 = load i32, i32* %2
%11 = load i32, i32* %3
%12 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0), i32 %10, i32 %11)
%13 = load i32, i32* %2
%14 = load i32, i32* %3
%15 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0), i32 %13, i32 %14)
%16 = call i32 @swapp(i32* %2, i32* %3)
%17 = load i32, i32* %2
%18 = load i32, i32* %3
%19 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i32 %17, i32 %18)
ret i32 0
}

LLVM IR (-O2):
@.str = [29 x i8] c"Before swap: x = %d, y = %d\0A\00"
@.str.1 = [29 x i8] c"After swap: x = %d, y = %d\0A\0A\00"
@.str.2 = [28 x i8] c"After swap: x = %d, y = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 100, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 200, i32* %2
%5 = tail call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0), i32 100, i32 200)
%6 = tail call i32 @swap(i32 100, i32 200)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0), i32 100, i32 200)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0), i32 100, i32 200)
%9 = call i32 @swapp(i32* %1, i32* %2)
%10 = load i32, i32* %1
%11 = load i32, i32* %2
%12 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i32 %10, i32 %11)
ret i32 0
}