#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 /*<<< orphan*/ swap(int *, int *);
int main() {
  int num1 = 20, num2 = 300;
  int *ptrNum1;
  int *ptrNum2;
  ptrNum1 = &num1;
  ptrNum2 = &num2;
  printf("Num1 value: %d\n", num1);
  printf("Num2 value: %d\n", num2);
  swap(ptrNum1, ptrNum2);
  printf("Num1 value: %d\n", num1);
  printf("Num2 value: %d\n", num2);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x14,-0x8(%rbp)
movl   $0x12c,-0xc(%rbp)
lea    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
lea    -0xc(%rbp),%rax
mov    %rax,-0x20(%rbp)
mov    -0x8(%rbp),%esi
lea    0xea9(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%esi
lea    0xeaa(%rip),%rdi
call   1030 <printf@plt>
mov    -0x18(%rbp),%rdi
mov    -0x20(%rbp),%rsi
call   1040 <swap@plt>
mov    -0x8(%rbp),%esi
lea    0xe7e(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%esi
lea    0xe7f(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
movl   $0x14,0x4(%rsp)
movl   $0x12c,(%rsp)
lea    0xec6(%rip),%r14
mov    %r14,%rdi
mov    $0x14,%esi
call   1030 <printf@plt>
lea    0xec2(%rip),%rbx
mov    %rbx,%rdi
mov    $0x12c,%esi
call   1030 <printf@plt>
lea    0x4(%rsp),%rdi
mov    %rsp,%rsi
call   1040 <swap@plt>
mov    0x4(%rsp),%esi
mov    %r14,%rdi
call   1030 <printf@plt>
mov    (%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [16 x i8] c"Num1 value: %d\0A\00"
@.str.1 = [16 x i8] c"Num2 value: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32*
%5 = alloca i32*
store i32 0, i32* %1
store i32 20, i32* %2
store i32 300, i32* %3
store i32* %2, i32** %4
store i32* %3, i32** %5
%6 = load i32, i32* %2
%7 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0), i32 %6)
%8 = load i32, i32* %3
%9 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i32 %8)
%10 = load i32*, i32** %4
%11 = load i32*, i32** %5
%12 = call i32 @swap(i32* %10, i32* %11)
%13 = load i32, i32* %2
%14 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = load i32, i32* %3
%16 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i32 %15)
ret i32 0
}

LLVM IR (-O2):
@.str = [16 x i8] c"Num1 value: %d\0A\00"
@.str.1 = [16 x i8] c"Num2 value: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 20, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 300, i32* %2
%5 = tail call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0), i32 20)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i32 300)
%7 = call i32 @swap(i32* %1, i32* %2)
%8 = load i32, i32* %1
%9 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = load i32, i32* %2
%11 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i32 %10)
ret i32 0
}