#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 main(int argc, char **argv) {
  int x = 10;
  int y = 20;
  int z = 0;
  printf("Before swapping\n");
  printf("Current value of x: %d, y: %d,z(swap variable): %d\n", x, y, z);
  z = x;
  x = y;
  y = z;
  printf("After swapping\n");
  printf("Current value of x: %d, y: %d,z(swap variable): %d\n", x, y, z);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0xa,-0x14(%rbp)
movl   $0x14,-0x18(%rbp)
movl   $0x0,-0x1c(%rbp)
lea    0xebe(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%esi
mov    -0x18(%rbp),%edx
mov    -0x1c(%rbp),%ecx
lea    0xeb8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
mov    %eax,-0x1c(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,-0x14(%rbp)
mov    -0x1c(%rbp),%eax
mov    %eax,-0x18(%rbp)
lea    0xecc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%esi
mov    -0x18(%rbp),%edx
mov    -0x1c(%rbp),%ecx
lea    0xe81(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xf0c(%rip),%rdi
call   1030 <puts@plt>
lea    0xecc(%rip),%rbx
mov    %rbx,%rdi
mov    $0xa,%esi
mov    $0x14,%edx
xor    %ecx,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xef3(%rip),%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
mov    $0x14,%esi
mov    $0xa,%edx
mov    $0xa,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Before swapping\0A\00"
@.str.1 = [52 x i8] c"Current value of x: %d, y: %d,z(swap variable): %d\0A\00"
@.str.2 = [16 x i8] c"After swapping\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 10, i32* %6
store i32 20, i32* %7
store i32 0, i32* %8
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0))
%10 = load i32, i32* %6
%11 = load i32, i32* %7
%12 = load i32, i32* %8
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str.1, i64 0, i64 0), i32 %10, i32 %11, i32 %12)
%14 = load i32, i32* %6
store i32 %14, i32* %8
%15 = load i32, i32* %7
store i32 %15, i32* %6
%16 = load i32, i32* %8
store i32 %16, i32* %7
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
%18 = load i32, i32* %6
%19 = load i32, i32* %7
%20 = load i32, i32* %8
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str.1, i64 0, i64 0), i32 %18, i32 %19, i32 %20)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [52 x i8] c"Current value of x: %d, y: %d,z(swap variable): %d\0A\00"
@str = [16 x i8] c"Before swapping\00"
@str.3 = [15 x i8] c"After swapping\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @.str.1, i64 0, i64 0), i32 10, i32 20, i32 0)
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @str.3, i64 0, i64 0))
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @.str.1, i64 0, i64 0), i32 20, i32 10, i32 10)
ret i32 0
}